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Use mod vendor for vendored directory (backwards compatible)

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Wim
2018-08-06 21:47:05 +02:00
parent 4fb4b7aa6c
commit 51062863a5
1112 changed files with 15660 additions and 420183 deletions
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3
vendor/golang.org/x/text/AUTHORS generated vendored Normal file
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# This source code refers to The Go Authors for copyright purposes.
# The master list of authors is in the main Go distribution,
# visible at http://tip.golang.org/AUTHORS.

3
vendor/golang.org/x/text/CONTRIBUTORS generated vendored Normal file
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# This source code was written by the Go contributors.
# The master list of contributors is in the main Go distribution,
# visible at http://tip.golang.org/CONTRIBUTORS.

0
vendor/golang.org/x/text/encoding/LICENSE → vendor/golang.org/x/text/LICENSE generated vendored
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22
vendor/golang.org/x/text/PATENTS generated vendored Normal file
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Additional IP Rights Grant (Patents)
"This implementation" means the copyrightable works distributed by
Google as part of the Go project.
Google hereby grants to You a perpetual, worldwide, non-exclusive,
no-charge, royalty-free, irrevocable (except as stated in this section)
patent license to make, have made, use, offer to sell, sell, import,
transfer and otherwise run, modify and propagate the contents of this
implementation of Go, where such license applies only to those patent
claims, both currently owned or controlled by Google and acquired in
the future, licensable by Google that are necessarily infringed by this
implementation of Go. This grant does not include claims that would be
infringed only as a consequence of further modification of this
implementation. If you or your agent or exclusive licensee institute or
order or agree to the institution of patent litigation against any
entity (including a cross-claim or counterclaim in a lawsuit) alleging
that this implementation of Go or any code incorporated within this
implementation of Go constitutes direct or contributory patent
infringement, or inducement of patent infringement, then any patent
rights granted to you under this License for this implementation of Go
shall terminate as of the date such litigation is filed.

249
vendor/golang.org/x/text/encoding/charmap/charmap.go generated vendored
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@ -1,249 +0,0 @@
// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
//go:generate go run maketables.go
// Package charmap provides simple character encodings such as IBM Code Page 437
// and Windows 1252.
package charmap // import "golang.org/x/text/encoding/charmap"
import (
"unicode/utf8"
"golang.org/x/text/encoding"
"golang.org/x/text/encoding/internal"
"golang.org/x/text/encoding/internal/identifier"
"golang.org/x/text/transform"
)
// These encodings vary only in the way clients should interpret them. Their
// coded character set is identical and a single implementation can be shared.
var (
// ISO8859_6E is the ISO 8859-6E encoding.
ISO8859_6E encoding.Encoding = &iso8859_6E
// ISO8859_6I is the ISO 8859-6I encoding.
ISO8859_6I encoding.Encoding = &iso8859_6I
// ISO8859_8E is the ISO 8859-8E encoding.
ISO8859_8E encoding.Encoding = &iso8859_8E
// ISO8859_8I is the ISO 8859-8I encoding.
ISO8859_8I encoding.Encoding = &iso8859_8I
iso8859_6E = internal.Encoding{
Encoding: ISO8859_6,
Name: "ISO-8859-6E",
MIB: identifier.ISO88596E,
}
iso8859_6I = internal.Encoding{
Encoding: ISO8859_6,
Name: "ISO-8859-6I",
MIB: identifier.ISO88596I,
}
iso8859_8E = internal.Encoding{
Encoding: ISO8859_8,
Name: "ISO-8859-8E",
MIB: identifier.ISO88598E,
}
iso8859_8I = internal.Encoding{
Encoding: ISO8859_8,
Name: "ISO-8859-8I",
MIB: identifier.ISO88598I,
}
)
// All is a list of all defined encodings in this package.
var All []encoding.Encoding = listAll
// TODO: implement these encodings, in order of importance.
// ASCII, ISO8859_1: Rather common. Close to Windows 1252.
// ISO8859_9: Close to Windows 1254.
// utf8Enc holds a rune's UTF-8 encoding in data[:len].
type utf8Enc struct {
len uint8
data [3]byte
}
// Charmap is an 8-bit character set encoding.
type Charmap struct {
// name is the encoding's name.
name string
// mib is the encoding type of this encoder.
mib identifier.MIB
// asciiSuperset states whether the encoding is a superset of ASCII.
asciiSuperset bool
// low is the lower bound of the encoded byte for a non-ASCII rune. If
// Charmap.asciiSuperset is true then this will be 0x80, otherwise 0x00.
low uint8
// replacement is the encoded replacement character.
replacement byte
// decode is the map from encoded byte to UTF-8.
decode [256]utf8Enc
// encoding is the map from runes to encoded bytes. Each entry is a
// uint32: the high 8 bits are the encoded byte and the low 24 bits are
// the rune. The table entries are sorted by ascending rune.
encode [256]uint32
}
// NewDecoder implements the encoding.Encoding interface.
func (m *Charmap) NewDecoder() *encoding.Decoder {
return &encoding.Decoder{Transformer: charmapDecoder{charmap: m}}
}
// NewEncoder implements the encoding.Encoding interface.
func (m *Charmap) NewEncoder() *encoding.Encoder {
return &encoding.Encoder{Transformer: charmapEncoder{charmap: m}}
}
// String returns the Charmap's name.
func (m *Charmap) String() string {
return m.name
}
// ID implements an internal interface.
func (m *Charmap) ID() (mib identifier.MIB, other string) {
return m.mib, ""
}
// charmapDecoder implements transform.Transformer by decoding to UTF-8.
type charmapDecoder struct {
transform.NopResetter
charmap *Charmap
}
func (m charmapDecoder) Transform(dst, src []byte, atEOF bool) (nDst, nSrc int, err error) {
for i, c := range src {
if m.charmap.asciiSuperset && c < utf8.RuneSelf {
if nDst >= len(dst) {
err = transform.ErrShortDst
break
}
dst[nDst] = c
nDst++
nSrc = i + 1
continue
}
decode := &m.charmap.decode[c]
n := int(decode.len)
if nDst+n > len(dst) {
err = transform.ErrShortDst
break
}
// It's 15% faster to avoid calling copy for these tiny slices.
for j := 0; j < n; j++ {
dst[nDst] = decode.data[j]
nDst++
}
nSrc = i + 1
}
return nDst, nSrc, err
}
// DecodeByte returns the Charmap's rune decoding of the byte b.
func (m *Charmap) DecodeByte(b byte) rune {
switch x := &m.decode[b]; x.len {
case 1:
return rune(x.data[0])
case 2:
return rune(x.data[0]&0x1f)<<6 | rune(x.data[1]&0x3f)
default:
return rune(x.data[0]&0x0f)<<12 | rune(x.data[1]&0x3f)<<6 | rune(x.data[2]&0x3f)
}
}
// charmapEncoder implements transform.Transformer by encoding from UTF-8.
type charmapEncoder struct {
transform.NopResetter
charmap *Charmap
}
func (m charmapEncoder) Transform(dst, src []byte, atEOF bool) (nDst, nSrc int, err error) {
r, size := rune(0), 0
loop:
for nSrc < len(src) {
if nDst >= len(dst) {
err = transform.ErrShortDst
break
}
r = rune(src[nSrc])
// Decode a 1-byte rune.
if r < utf8.RuneSelf {
if m.charmap.asciiSuperset {
nSrc++
dst[nDst] = uint8(r)
nDst++
continue
}
size = 1
} else {
// Decode a multi-byte rune.
r, size = utf8.DecodeRune(src[nSrc:])
if size == 1 {
// All valid runes of size 1 (those below utf8.RuneSelf) were
// handled above. We have invalid UTF-8 or we haven't seen the
// full character yet.
if !atEOF && !utf8.FullRune(src[nSrc:]) {
err = transform.ErrShortSrc
} else {
err = internal.RepertoireError(m.charmap.replacement)
}
break
}
}
// Binary search in [low, high) for that rune in the m.charmap.encode table.
for low, high := int(m.charmap.low), 0x100; ; {
if low >= high {
err = internal.RepertoireError(m.charmap.replacement)
break loop
}
mid := (low + high) / 2
got := m.charmap.encode[mid]
gotRune := rune(got & (1<<24 - 1))
if gotRune < r {
low = mid + 1
} else if gotRune > r {
high = mid
} else {
dst[nDst] = byte(got >> 24)
nDst++
break
}
}
nSrc += size
}
return nDst, nSrc, err
}
// EncodeRune returns the Charmap's byte encoding of the rune r. ok is whether
// r is in the Charmap's repertoire. If not, b is set to the Charmap's
// replacement byte. This is often the ASCII substitute character '\x1a'.
func (m *Charmap) EncodeRune(r rune) (b byte, ok bool) {
if r < utf8.RuneSelf && m.asciiSuperset {
return byte(r), true
}
for low, high := int(m.low), 0x100; ; {
if low >= high {
return m.replacement, false
}
mid := (low + high) / 2
got := m.encode[mid]
gotRune := rune(got & (1<<24 - 1))
if gotRune < r {
low = mid + 1
} else if gotRune > r {
high = mid
} else {
return byte(got >> 24), true
}
}
}

556
vendor/golang.org/x/text/encoding/charmap/maketables.go generated vendored
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@ -1,556 +0,0 @@
// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build ignore
package main
import (
"bufio"
"fmt"
"log"
"net/http"
"sort"
"strings"
"unicode/utf8"
"golang.org/x/text/encoding"
"golang.org/x/text/internal/gen"
)
const ascii = "\x00\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0a\x0b\x0c\x0d\x0e\x0f" +
"\x10\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f" +
` !"#$%&'()*+,-./0123456789:;<=>?` +
`@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_` +
"`abcdefghijklmnopqrstuvwxyz{|}~\u007f"
var encodings = []struct {
name string
mib string
comment string
varName string
replacement byte
mapping string
}{
{
"IBM Code Page 037",
"IBM037",
"",
"CodePage037",
0x3f,
"http://source.icu-project.org/repos/icu/data/trunk/charset/data/ucm/glibc-IBM037-2.1.2.ucm",
},
{
"IBM Code Page 437",
"PC8CodePage437",
"",
"CodePage437",
encoding.ASCIISub,
"http://source.icu-project.org/repos/icu/data/trunk/charset/data/ucm/glibc-IBM437-2.1.2.ucm",
},
{
"IBM Code Page 850",
"PC850Multilingual",
"",
"CodePage850",
encoding.ASCIISub,
"http://source.icu-project.org/repos/icu/data/trunk/charset/data/ucm/glibc-IBM850-2.1.2.ucm",
},
{
"IBM Code Page 852",
"PCp852",
"",
"CodePage852",
encoding.ASCIISub,
"http://source.icu-project.org/repos/icu/data/trunk/charset/data/ucm/glibc-IBM852-2.1.2.ucm",
},
{
"IBM Code Page 855",
"IBM855",
"",
"CodePage855",
encoding.ASCIISub,
"http://source.icu-project.org/repos/icu/data/trunk/charset/data/ucm/glibc-IBM855-2.1.2.ucm",
},
{
"Windows Code Page 858", // PC latin1 with Euro
"IBM00858",
"",
"CodePage858",
encoding.ASCIISub,
"http://source.icu-project.org/repos/icu/data/trunk/charset/data/ucm/windows-858-2000.ucm",
},
{
"IBM Code Page 860",
"IBM860",
"",
"CodePage860",
encoding.ASCIISub,
"http://source.icu-project.org/repos/icu/data/trunk/charset/data/ucm/glibc-IBM860-2.1.2.ucm",
},
{
"IBM Code Page 862",
"PC862LatinHebrew",
"",
"CodePage862",
encoding.ASCIISub,
"http://source.icu-project.org/repos/icu/data/trunk/charset/data/ucm/glibc-IBM862-2.1.2.ucm",
},
{
"IBM Code Page 863",
"IBM863",
"",
"CodePage863",
encoding.ASCIISub,
"http://source.icu-project.org/repos/icu/data/trunk/charset/data/ucm/glibc-IBM863-2.1.2.ucm",
},
{
"IBM Code Page 865",
"IBM865",
"",
"CodePage865",
encoding.ASCIISub,
"http://source.icu-project.org/repos/icu/data/trunk/charset/data/ucm/glibc-IBM865-2.1.2.ucm",
},
{
"IBM Code Page 866",
"IBM866",
"",
"CodePage866",
encoding.ASCIISub,
"http://encoding.spec.whatwg.org/index-ibm866.txt",
},
{
"IBM Code Page 1047",
"IBM1047",
"",
"CodePage1047",
0x3f,
"http://source.icu-project.org/repos/icu/data/trunk/charset/data/ucm/glibc-IBM1047-2.1.2.ucm",
},
{
"IBM Code Page 1140",
"IBM01140",
"",
"CodePage1140",
0x3f,
"http://source.icu-project.org/repos/icu/data/trunk/charset/data/ucm/ibm-1140_P100-1997.ucm",
},
{
"ISO 8859-1",
"ISOLatin1",
"",
"ISO8859_1",
encoding.ASCIISub,
"http://source.icu-project.org/repos/icu/data/trunk/charset/data/ucm/iso-8859_1-1998.ucm",
},
{
"ISO 8859-2",
"ISOLatin2",
"",
"ISO8859_2",
encoding.ASCIISub,
"http://encoding.spec.whatwg.org/index-iso-8859-2.txt",
},
{
"ISO 8859-3",
"ISOLatin3",
"",
"ISO8859_3",
encoding.ASCIISub,
"http://encoding.spec.whatwg.org/index-iso-8859-3.txt",
},
{
"ISO 8859-4",
"ISOLatin4",
"",
"ISO8859_4",
encoding.ASCIISub,
"http://encoding.spec.whatwg.org/index-iso-8859-4.txt",
},
{
"ISO 8859-5",
"ISOLatinCyrillic",
"",
"ISO8859_5",
encoding.ASCIISub,
"http://encoding.spec.whatwg.org/index-iso-8859-5.txt",
},
{
"ISO 8859-6",
"ISOLatinArabic",
"",
"ISO8859_6,ISO8859_6E,ISO8859_6I",
encoding.ASCIISub,
"http://encoding.spec.whatwg.org/index-iso-8859-6.txt",
},
{
"ISO 8859-7",
"ISOLatinGreek",
"",
"ISO8859_7",
encoding.ASCIISub,
"http://encoding.spec.whatwg.org/index-iso-8859-7.txt",
},
{
"ISO 8859-8",
"ISOLatinHebrew",
"",
"ISO8859_8,ISO8859_8E,ISO8859_8I",
encoding.ASCIISub,
"http://encoding.spec.whatwg.org/index-iso-8859-8.txt",
},
{
"ISO 8859-9",
"ISOLatin5",
"",
"ISO8859_9",
encoding.ASCIISub,
"http://source.icu-project.org/repos/icu/data/trunk/charset/data/ucm/iso-8859_9-1999.ucm",
},
{
"ISO 8859-10",
"ISOLatin6",
"",
"ISO8859_10",
encoding.ASCIISub,
"http://encoding.spec.whatwg.org/index-iso-8859-10.txt",
},
{
"ISO 8859-13",
"ISO885913",
"",
"ISO8859_13",
encoding.ASCIISub,
"http://encoding.spec.whatwg.org/index-iso-8859-13.txt",
},
{
"ISO 8859-14",
"ISO885914",
"",
"ISO8859_14",
encoding.ASCIISub,
"http://encoding.spec.whatwg.org/index-iso-8859-14.txt",
},
{
"ISO 8859-15",
"ISO885915",
"",
"ISO8859_15",
encoding.ASCIISub,
"http://encoding.spec.whatwg.org/index-iso-8859-15.txt",
},
{
"ISO 8859-16",
"ISO885916",
"",
"ISO8859_16",
encoding.ASCIISub,
"http://encoding.spec.whatwg.org/index-iso-8859-16.txt",
},
{
"KOI8-R",
"KOI8R",
"",
"KOI8R",
encoding.ASCIISub,
"http://encoding.spec.whatwg.org/index-koi8-r.txt",
},
{
"KOI8-U",
"KOI8U",
"",
"KOI8U",
encoding.ASCIISub,
"http://encoding.spec.whatwg.org/index-koi8-u.txt",
},
{
"Macintosh",
"Macintosh",
"",
"Macintosh",
encoding.ASCIISub,
"http://encoding.spec.whatwg.org/index-macintosh.txt",
},
{
"Macintosh Cyrillic",
"MacintoshCyrillic",
"",
"MacintoshCyrillic",
encoding.ASCIISub,
"http://encoding.spec.whatwg.org/index-x-mac-cyrillic.txt",
},
{
"Windows 874",
"Windows874",
"",
"Windows874",
encoding.ASCIISub,
"http://encoding.spec.whatwg.org/index-windows-874.txt",
},
{
"Windows 1250",
"Windows1250",
"",
"Windows1250",
encoding.ASCIISub,
"http://encoding.spec.whatwg.org/index-windows-1250.txt",
},
{
"Windows 1251",
"Windows1251",
"",
"Windows1251",
encoding.ASCIISub,
"http://encoding.spec.whatwg.org/index-windows-1251.txt",
},
{
"Windows 1252",
"Windows1252",
"",
"Windows1252",
encoding.ASCIISub,
"http://encoding.spec.whatwg.org/index-windows-1252.txt",
},
{
"Windows 1253",
"Windows1253",
"",
"Windows1253",
encoding.ASCIISub,
"http://encoding.spec.whatwg.org/index-windows-1253.txt",
},
{
"Windows 1254",
"Windows1254",
"",
"Windows1254",
encoding.ASCIISub,
"http://encoding.spec.whatwg.org/index-windows-1254.txt",
},
{
"Windows 1255",
"Windows1255",
"",
"Windows1255",
encoding.ASCIISub,
"http://encoding.spec.whatwg.org/index-windows-1255.txt",
},
{
"Windows 1256",
"Windows1256",
"",
"Windows1256",
encoding.ASCIISub,
"http://encoding.spec.whatwg.org/index-windows-1256.txt",
},
{
"Windows 1257",
"Windows1257",
"",
"Windows1257",
encoding.ASCIISub,
"http://encoding.spec.whatwg.org/index-windows-1257.txt",
},
{
"Windows 1258",
"Windows1258",
"",
"Windows1258",
encoding.ASCIISub,
"http://encoding.spec.whatwg.org/index-windows-1258.txt",
},
{
"X-User-Defined",
"XUserDefined",
"It is defined at http://encoding.spec.whatwg.org/#x-user-defined",
"XUserDefined",
encoding.ASCIISub,
ascii +
"\uf780\uf781\uf782\uf783\uf784\uf785\uf786\uf787" +
"\uf788\uf789\uf78a\uf78b\uf78c\uf78d\uf78e\uf78f" +
"\uf790\uf791\uf792\uf793\uf794\uf795\uf796\uf797" +
"\uf798\uf799\uf79a\uf79b\uf79c\uf79d\uf79e\uf79f" +
"\uf7a0\uf7a1\uf7a2\uf7a3\uf7a4\uf7a5\uf7a6\uf7a7" +
"\uf7a8\uf7a9\uf7aa\uf7ab\uf7ac\uf7ad\uf7ae\uf7af" +
"\uf7b0\uf7b1\uf7b2\uf7b3\uf7b4\uf7b5\uf7b6\uf7b7" +
"\uf7b8\uf7b9\uf7ba\uf7bb\uf7bc\uf7bd\uf7be\uf7bf" +
"\uf7c0\uf7c1\uf7c2\uf7c3\uf7c4\uf7c5\uf7c6\uf7c7" +
"\uf7c8\uf7c9\uf7ca\uf7cb\uf7cc\uf7cd\uf7ce\uf7cf" +
"\uf7d0\uf7d1\uf7d2\uf7d3\uf7d4\uf7d5\uf7d6\uf7d7" +
"\uf7d8\uf7d9\uf7da\uf7db\uf7dc\uf7dd\uf7de\uf7df" +
"\uf7e0\uf7e1\uf7e2\uf7e3\uf7e4\uf7e5\uf7e6\uf7e7" +
"\uf7e8\uf7e9\uf7ea\uf7eb\uf7ec\uf7ed\uf7ee\uf7ef" +
"\uf7f0\uf7f1\uf7f2\uf7f3\uf7f4\uf7f5\uf7f6\uf7f7" +
"\uf7f8\uf7f9\uf7fa\uf7fb\uf7fc\uf7fd\uf7fe\uf7ff",
},
}
func getWHATWG(url string) string {
res, err := http.Get(url)
if err != nil {
log.Fatalf("%q: Get: %v", url, err)
}
defer res.Body.Close()
mapping := make([]rune, 128)
for i := range mapping {
mapping[i] = '\ufffd'
}
scanner := bufio.NewScanner(res.Body)
for scanner.Scan() {
s := strings.TrimSpace(scanner.Text())
if s == "" || s[0] == '#' {
continue
}
x, y := 0, 0
if _, err := fmt.Sscanf(s, "%d\t0x%x", &x, &y); err != nil {
log.Fatalf("could not parse %q", s)
}
if x < 0 || 128 <= x {
log.Fatalf("code %d is out of range", x)
}
if 0x80 <= y && y < 0xa0 {
// We diverge from the WHATWG spec by mapping control characters
// in the range [0x80, 0xa0) to U+FFFD.
continue
}
mapping[x] = rune(y)
}
return ascii + string(mapping)
}
func getUCM(url string) string {
res, err := http.Get(url)
if err != nil {
log.Fatalf("%q: Get: %v", url, err)
}
defer res.Body.Close()
mapping := make([]rune, 256)
for i := range mapping {
mapping[i] = '\ufffd'
}
charsFound := 0
scanner := bufio.NewScanner(res.Body)
for scanner.Scan() {
s := strings.TrimSpace(scanner.Text())
if s == "" || s[0] == '#' {
continue
}
var c byte
var r rune
if _, err := fmt.Sscanf(s, `<U%x> \x%x |0`, &r, &c); err != nil {
continue
}
mapping[c] = r
charsFound++
}
if charsFound < 200 {
log.Fatalf("%q: only %d characters found (wrong page format?)", url, charsFound)
}
return string(mapping)
}
func main() {
mibs := map[string]bool{}
all := []string{}
w := gen.NewCodeWriter()
defer w.WriteGoFile("tables.go", "charmap")
printf := func(s string, a ...interface{}) { fmt.Fprintf(w, s, a...) }
printf("import (\n")
printf("\t\"golang.org/x/text/encoding\"\n")
printf("\t\"golang.org/x/text/encoding/internal/identifier\"\n")
printf(")\n\n")
for _, e := range encodings {
varNames := strings.Split(e.varName, ",")
all = append(all, varNames...)
varName := varNames[0]
switch {
case strings.HasPrefix(e.mapping, "http://encoding.spec.whatwg.org/"):
e.mapping = getWHATWG(e.mapping)
case strings.HasPrefix(e.mapping, "http://source.icu-project.org/repos/icu/data/trunk/charset/data/ucm/"):
e.mapping = getUCM(e.mapping)
}
asciiSuperset, low := strings.HasPrefix(e.mapping, ascii), 0x00
if asciiSuperset {
low = 0x80
}
lvn := 1
if strings.HasPrefix(varName, "ISO") || strings.HasPrefix(varName, "KOI") {
lvn = 3
}
lowerVarName := strings.ToLower(varName[:lvn]) + varName[lvn:]
printf("// %s is the %s encoding.\n", varName, e.name)
if e.comment != "" {
printf("//\n// %s\n", e.comment)
}
printf("var %s *Charmap = &%s\n\nvar %s = Charmap{\nname: %q,\n",
varName, lowerVarName, lowerVarName, e.name)
if mibs[e.mib] {
log.Fatalf("MIB type %q declared multiple times.", e.mib)
}
printf("mib: identifier.%s,\n", e.mib)
printf("asciiSuperset: %t,\n", asciiSuperset)
printf("low: 0x%02x,\n", low)
printf("replacement: 0x%02x,\n", e.replacement)
printf("decode: [256]utf8Enc{\n")
i, backMapping := 0, map[rune]byte{}
for _, c := range e.mapping {
if _, ok := backMapping[c]; !ok && c != utf8.RuneError {
backMapping[c] = byte(i)
}
var buf [8]byte
n := utf8.EncodeRune(buf[:], c)
if n > 3 {
panic(fmt.Sprintf("rune %q (%U) is too long", c, c))
}
printf("{%d,[3]byte{0x%02x,0x%02x,0x%02x}},", n, buf[0], buf[1], buf[2])
if i%2 == 1 {
printf("\n")
}
i++
}
printf("},\n")
printf("encode: [256]uint32{\n")
encode := make([]uint32, 0, 256)
for c, i := range backMapping {
encode = append(encode, uint32(i)<<24|uint32(c))
}
sort.Sort(byRune(encode))
for len(encode) < cap(encode) {
encode = append(encode, encode[len(encode)-1])
}
for i, enc := range encode {
printf("0x%08x,", enc)
if i%8 == 7 {
printf("\n")
}
}
printf("},\n}\n")
// Add an estimate of the size of a single Charmap{} struct value, which
// includes two 256 elem arrays of 4 bytes and some extra fields, which
// align to 3 uint64s on 64-bit architectures.
w.Size += 2*4*256 + 3*8
}
// TODO: add proper line breaking.
printf("var listAll = []encoding.Encoding{\n%s,\n}\n\n", strings.Join(all, ",\n"))
}
type byRune []uint32
func (b byRune) Len() int { return len(b) }
func (b byRune) Less(i, j int) bool { return b[i]&0xffffff < b[j]&0xffffff }
func (b byRune) Swap(i, j int) { b[i], b[j] = b[j], b[i] }

7410
vendor/golang.org/x/text/encoding/charmap/tables.go generated vendored
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173
vendor/golang.org/x/text/encoding/htmlindex/gen.go generated vendored
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@ -1,173 +0,0 @@
// Copyright 2015 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build ignore
package main
import (
"bytes"
"encoding/json"
"fmt"
"log"
"strings"
"golang.org/x/text/internal/gen"
)
type group struct {
Encodings []struct {
Labels []string
Name string
}
}
func main() {
gen.Init()
r := gen.Open("https://encoding.spec.whatwg.org", "whatwg", "encodings.json")
var groups []group
if err := json.NewDecoder(r).Decode(&groups); err != nil {
log.Fatalf("Error reading encodings.json: %v", err)
}
w := &bytes.Buffer{}
fmt.Fprintln(w, "type htmlEncoding byte")
fmt.Fprintln(w, "const (")
for i, g := range groups {
for _, e := range g.Encodings {
key := strings.ToLower(e.Name)
name := consts[key]
if name == "" {
log.Fatalf("No const defined for %s.", key)
}
if i == 0 {
fmt.Fprintf(w, "%s htmlEncoding = iota\n", name)
} else {
fmt.Fprintf(w, "%s\n", name)
}
}
}
fmt.Fprintln(w, "numEncodings")
fmt.Fprint(w, ")\n\n")
fmt.Fprintln(w, "var canonical = [numEncodings]string{")
for _, g := range groups {
for _, e := range g.Encodings {
fmt.Fprintf(w, "%q,\n", strings.ToLower(e.Name))
}
}
fmt.Fprint(w, "}\n\n")
fmt.Fprintln(w, "var nameMap = map[string]htmlEncoding{")
for _, g := range groups {
for _, e := range g.Encodings {
for _, l := range e.Labels {
key := strings.ToLower(e.Name)
name := consts[key]
fmt.Fprintf(w, "%q: %s,\n", l, name)
}
}
}
fmt.Fprint(w, "}\n\n")
var tags []string
fmt.Fprintln(w, "var localeMap = []htmlEncoding{")
for _, loc := range locales {
tags = append(tags, loc.tag)
fmt.Fprintf(w, "%s, // %s \n", consts[loc.name], loc.tag)
}
fmt.Fprint(w, "}\n\n")
fmt.Fprintf(w, "const locales = %q\n", strings.Join(tags, " "))
gen.WriteGoFile("tables.go", "htmlindex", w.Bytes())
}
// consts maps canonical encoding name to internal constant.
var consts = map[string]string{
"utf-8": "utf8",
"ibm866": "ibm866",
"iso-8859-2": "iso8859_2",
"iso-8859-3": "iso8859_3",
"iso-8859-4": "iso8859_4",
"iso-8859-5": "iso8859_5",
"iso-8859-6": "iso8859_6",
"iso-8859-7": "iso8859_7",
"iso-8859-8": "iso8859_8",
"iso-8859-8-i": "iso8859_8I",
"iso-8859-10": "iso8859_10",
"iso-8859-13": "iso8859_13",
"iso-8859-14": "iso8859_14",
"iso-8859-15": "iso8859_15",
"iso-8859-16": "iso8859_16",
"koi8-r": "koi8r",
"koi8-u": "koi8u",
"macintosh": "macintosh",
"windows-874": "windows874",
"windows-1250": "windows1250",
"windows-1251": "windows1251",
"windows-1252": "windows1252",
"windows-1253": "windows1253",
"windows-1254": "windows1254",
"windows-1255": "windows1255",
"windows-1256": "windows1256",
"windows-1257": "windows1257",
"windows-1258": "windows1258",
"x-mac-cyrillic": "macintoshCyrillic",
"gbk": "gbk",
"gb18030": "gb18030",
// "hz-gb-2312": "hzgb2312", // Was removed from WhatWG
"big5": "big5",
"euc-jp": "eucjp",
"iso-2022-jp": "iso2022jp",
"shift_jis": "shiftJIS",
"euc-kr": "euckr",
"replacement": "replacement",
"utf-16be": "utf16be",
"utf-16le": "utf16le",
"x-user-defined": "xUserDefined",
}
// locales is taken from
// https://html.spec.whatwg.org/multipage/syntax.html#encoding-sniffing-algorithm.
var locales = []struct{ tag, name string }{
// The default value. Explicitly state latin to benefit from the exact
// script option, while still making 1252 the default encoding for languages
// written in Latin script.
{"und_Latn", "windows-1252"},
{"ar", "windows-1256"},
{"ba", "windows-1251"},
{"be", "windows-1251"},
{"bg", "windows-1251"},
{"cs", "windows-1250"},
{"el", "iso-8859-7"},
{"et", "windows-1257"},
{"fa", "windows-1256"},
{"he", "windows-1255"},
{"hr", "windows-1250"},
{"hu", "iso-8859-2"},
{"ja", "shift_jis"},
{"kk", "windows-1251"},
{"ko", "euc-kr"},
{"ku", "windows-1254"},
{"ky", "windows-1251"},
{"lt", "windows-1257"},
{"lv", "windows-1257"},
{"mk", "windows-1251"},
{"pl", "iso-8859-2"},
{"ru", "windows-1251"},
{"sah", "windows-1251"},
{"sk", "windows-1250"},
{"sl", "iso-8859-2"},
{"sr", "windows-1251"},
{"tg", "windows-1251"},
{"th", "windows-874"},
{"tr", "windows-1254"},
{"tt", "windows-1251"},
{"uk", "windows-1251"},
{"vi", "windows-1258"},
{"zh-hans", "gb18030"},
{"zh-hant", "big5"},
}

86
vendor/golang.org/x/text/encoding/htmlindex/htmlindex.go generated vendored
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@ -1,86 +0,0 @@
// Copyright 2015 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
//go:generate go run gen.go
// Package htmlindex maps character set encoding names to Encodings as
// recommended by the W3C for use in HTML 5. See http://www.w3.org/TR/encoding.
package htmlindex
// TODO: perhaps have a "bare" version of the index (used by this package) that
// is not pre-loaded with all encodings. Global variables in encodings prevent
// the linker from being able to purge unneeded tables. This means that
// referencing all encodings, as this package does for the default index, links
// in all encodings unconditionally.
//
// This issue can be solved by either solving the linking issue (see
// https://github.com/golang/go/issues/6330) or refactoring the encoding tables
// (e.g. moving the tables to internal packages that do not use global
// variables).
// TODO: allow canonicalizing names
import (
"errors"
"strings"
"sync"
"golang.org/x/text/encoding"
"golang.org/x/text/encoding/internal/identifier"
"golang.org/x/text/language"
)
var (
errInvalidName = errors.New("htmlindex: invalid encoding name")
errUnknown = errors.New("htmlindex: unknown Encoding")
errUnsupported = errors.New("htmlindex: this encoding is not supported")
)
var (
matcherOnce sync.Once
matcher language.Matcher
)
// LanguageDefault returns the canonical name of the default encoding for a
// given language.
func LanguageDefault(tag language.Tag) string {
matcherOnce.Do(func() {
tags := []language.Tag{}
for _, t := range strings.Split(locales, " ") {
tags = append(tags, language.MustParse(t))
}
matcher = language.NewMatcher(tags, language.PreferSameScript(true))
})
_, i, _ := matcher.Match(tag)
return canonical[localeMap[i]] // Default is Windows-1252.
}
// Get returns an Encoding for one of the names listed in
// http://www.w3.org/TR/encoding using the Default Index. Matching is case-
// insensitive.
func Get(name string) (encoding.Encoding, error) {
x, ok := nameMap[strings.ToLower(strings.TrimSpace(name))]
if !ok {
return nil, errInvalidName
}
return encodings[x], nil
}
// Name reports the canonical name of the given Encoding. It will return
// an error if e is not associated with a supported encoding scheme.
func Name(e encoding.Encoding) (string, error) {
id, ok := e.(identifier.Interface)
if !ok {
return "", errUnknown
}
mib, _ := id.ID()
if mib == 0 {
return "", errUnknown
}
v, ok := mibMap[mib]
if !ok {
return "", errUnsupported
}
return canonical[v], nil
}

105
vendor/golang.org/x/text/encoding/htmlindex/map.go generated vendored
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@ -1,105 +0,0 @@
// Copyright 2015 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package htmlindex
import (
"golang.org/x/text/encoding"
"golang.org/x/text/encoding/charmap"
"golang.org/x/text/encoding/internal/identifier"
"golang.org/x/text/encoding/japanese"
"golang.org/x/text/encoding/korean"
"golang.org/x/text/encoding/simplifiedchinese"
"golang.org/x/text/encoding/traditionalchinese"
"golang.org/x/text/encoding/unicode"
)
// mibMap maps a MIB identifier to an htmlEncoding index.
var mibMap = map[identifier.MIB]htmlEncoding{
identifier.UTF8: utf8,
identifier.UTF16BE: utf16be,
identifier.UTF16LE: utf16le,
identifier.IBM866: ibm866,
identifier.ISOLatin2: iso8859_2,
identifier.ISOLatin3: iso8859_3,
identifier.ISOLatin4: iso8859_4,
identifier.ISOLatinCyrillic: iso8859_5,
identifier.ISOLatinArabic: iso8859_6,
identifier.ISOLatinGreek: iso8859_7,
identifier.ISOLatinHebrew: iso8859_8,
identifier.ISO88598I: iso8859_8I,
identifier.ISOLatin6: iso8859_10,
identifier.ISO885913: iso8859_13,
identifier.ISO885914: iso8859_14,
identifier.ISO885915: iso8859_15,
identifier.ISO885916: iso8859_16,
identifier.KOI8R: koi8r,
identifier.KOI8U: koi8u,
identifier.Macintosh: macintosh,
identifier.MacintoshCyrillic: macintoshCyrillic,
identifier.Windows874: windows874,
identifier.Windows1250: windows1250,
identifier.Windows1251: windows1251,
identifier.Windows1252: windows1252,
identifier.Windows1253: windows1253,
identifier.Windows1254: windows1254,
identifier.Windows1255: windows1255,
identifier.Windows1256: windows1256,
identifier.Windows1257: windows1257,
identifier.Windows1258: windows1258,
identifier.XUserDefined: xUserDefined,
identifier.GBK: gbk,
identifier.GB18030: gb18030,
identifier.Big5: big5,
identifier.EUCPkdFmtJapanese: eucjp,
identifier.ISO2022JP: iso2022jp,
identifier.ShiftJIS: shiftJIS,
identifier.EUCKR: euckr,
identifier.Replacement: replacement,
}
// encodings maps the internal htmlEncoding to an Encoding.
// TODO: consider using a reusable index in encoding/internal.
var encodings = [numEncodings]encoding.Encoding{
utf8: unicode.UTF8,
ibm866: charmap.CodePage866,
iso8859_2: charmap.ISO8859_2,
iso8859_3: charmap.ISO8859_3,
iso8859_4: charmap.ISO8859_4,
iso8859_5: charmap.ISO8859_5,
iso8859_6: charmap.ISO8859_6,
iso8859_7: charmap.ISO8859_7,
iso8859_8: charmap.ISO8859_8,
iso8859_8I: charmap.ISO8859_8I,
iso8859_10: charmap.ISO8859_10,
iso8859_13: charmap.ISO8859_13,
iso8859_14: charmap.ISO8859_14,
iso8859_15: charmap.ISO8859_15,
iso8859_16: charmap.ISO8859_16,
koi8r: charmap.KOI8R,
koi8u: charmap.KOI8U,
macintosh: charmap.Macintosh,
windows874: charmap.Windows874,
windows1250: charmap.Windows1250,
windows1251: charmap.Windows1251,
windows1252: charmap.Windows1252,
windows1253: charmap.Windows1253,
windows1254: charmap.Windows1254,
windows1255: charmap.Windows1255,
windows1256: charmap.Windows1256,
windows1257: charmap.Windows1257,
windows1258: charmap.Windows1258,
macintoshCyrillic: charmap.MacintoshCyrillic,
gbk: simplifiedchinese.GBK,
gb18030: simplifiedchinese.GB18030,
big5: traditionalchinese.Big5,
eucjp: japanese.EUCJP,
iso2022jp: japanese.ISO2022JP,
shiftJIS: japanese.ShiftJIS,
euckr: korean.EUCKR,
replacement: encoding.Replacement,
utf16be: unicode.UTF16(unicode.BigEndian, unicode.IgnoreBOM),
utf16le: unicode.UTF16(unicode.LittleEndian, unicode.IgnoreBOM),
xUserDefined: charmap.XUserDefined,
}

352
vendor/golang.org/x/text/encoding/htmlindex/tables.go generated vendored
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@ -1,352 +0,0 @@
// Code generated by running "go generate" in golang.org/x/text. DO NOT EDIT.
package htmlindex
type htmlEncoding byte
const (
utf8 htmlEncoding = iota
ibm866
iso8859_2
iso8859_3
iso8859_4
iso8859_5
iso8859_6
iso8859_7
iso8859_8
iso8859_8I
iso8859_10
iso8859_13
iso8859_14
iso8859_15
iso8859_16
koi8r
koi8u
macintosh
windows874
windows1250
windows1251
windows1252
windows1253
windows1254
windows1255
windows1256
windows1257
windows1258
macintoshCyrillic
gbk
gb18030
big5
eucjp
iso2022jp
shiftJIS
euckr
replacement
utf16be
utf16le
xUserDefined
numEncodings
)
var canonical = [numEncodings]string{
"utf-8",
"ibm866",
"iso-8859-2",
"iso-8859-3",
"iso-8859-4",
"iso-8859-5",
"iso-8859-6",
"iso-8859-7",
"iso-8859-8",
"iso-8859-8-i",
"iso-8859-10",
"iso-8859-13",
"iso-8859-14",
"iso-8859-15",
"iso-8859-16",
"koi8-r",
"koi8-u",
"macintosh",
"windows-874",
"windows-1250",
"windows-1251",
"windows-1252",
"windows-1253",
"windows-1254",
"windows-1255",
"windows-1256",
"windows-1257",
"windows-1258",
"x-mac-cyrillic",
"gbk",
"gb18030",
"big5",
"euc-jp",
"iso-2022-jp",
"shift_jis",
"euc-kr",
"replacement",
"utf-16be",
"utf-16le",
"x-user-defined",
}
var nameMap = map[string]htmlEncoding{
"unicode-1-1-utf-8": utf8,
"utf-8": utf8,
"utf8": utf8,
"866": ibm866,
"cp866": ibm866,
"csibm866": ibm866,
"ibm866": ibm866,
"csisolatin2": iso8859_2,
"iso-8859-2": iso8859_2,
"iso-ir-101": iso8859_2,
"iso8859-2": iso8859_2,
"iso88592": iso8859_2,
"iso_8859-2": iso8859_2,
"iso_8859-2:1987": iso8859_2,
"l2": iso8859_2,
"latin2": iso8859_2,
"csisolatin3": iso8859_3,
"iso-8859-3": iso8859_3,
"iso-ir-109": iso8859_3,
"iso8859-3": iso8859_3,
"iso88593": iso8859_3,
"iso_8859-3": iso8859_3,
"iso_8859-3:1988": iso8859_3,
"l3": iso8859_3,
"latin3": iso8859_3,
"csisolatin4": iso8859_4,
"iso-8859-4": iso8859_4,
"iso-ir-110": iso8859_4,
"iso8859-4": iso8859_4,
"iso88594": iso8859_4,
"iso_8859-4": iso8859_4,
"iso_8859-4:1988": iso8859_4,
"l4": iso8859_4,
"latin4": iso8859_4,
"csisolatincyrillic": iso8859_5,
"cyrillic": iso8859_5,
"iso-8859-5": iso8859_5,
"iso-ir-144": iso8859_5,
"iso8859-5": iso8859_5,
"iso88595": iso8859_5,
"iso_8859-5": iso8859_5,
"iso_8859-5:1988": iso8859_5,
"arabic": iso8859_6,
"asmo-708": iso8859_6,
"csiso88596e": iso8859_6,
"csiso88596i": iso8859_6,
"csisolatinarabic": iso8859_6,
"ecma-114": iso8859_6,
"iso-8859-6": iso8859_6,
"iso-8859-6-e": iso8859_6,
"iso-8859-6-i": iso8859_6,
"iso-ir-127": iso8859_6,
"iso8859-6": iso8859_6,
"iso88596": iso8859_6,
"iso_8859-6": iso8859_6,
"iso_8859-6:1987": iso8859_6,
"csisolatingreek": iso8859_7,
"ecma-118": iso8859_7,
"elot_928": iso8859_7,
"greek": iso8859_7,
"greek8": iso8859_7,
"iso-8859-7": iso8859_7,
"iso-ir-126": iso8859_7,
"iso8859-7": iso8859_7,
"iso88597": iso8859_7,
"iso_8859-7": iso8859_7,
"iso_8859-7:1987": iso8859_7,
"sun_eu_greek": iso8859_7,
"csiso88598e": iso8859_8,
"csisolatinhebrew": iso8859_8,
"hebrew": iso8859_8,
"iso-8859-8": iso8859_8,
"iso-8859-8-e": iso8859_8,
"iso-ir-138": iso8859_8,
"iso8859-8": iso8859_8,
"iso88598": iso8859_8,
"iso_8859-8": iso8859_8,
"iso_8859-8:1988": iso8859_8,
"visual": iso8859_8,
"csiso88598i": iso8859_8I,
"iso-8859-8-i": iso8859_8I,
"logical": iso8859_8I,
"csisolatin6": iso8859_10,
"iso-8859-10": iso8859_10,
"iso-ir-157": iso8859_10,
"iso8859-10": iso8859_10,
"iso885910": iso8859_10,
"l6": iso8859_10,
"latin6": iso8859_10,
"iso-8859-13": iso8859_13,
"iso8859-13": iso8859_13,
"iso885913": iso8859_13,
"iso-8859-14": iso8859_14,
"iso8859-14": iso8859_14,
"iso885914": iso8859_14,
"csisolatin9": iso8859_15,
"iso-8859-15": iso8859_15,
"iso8859-15": iso8859_15,
"iso885915": iso8859_15,
"iso_8859-15": iso8859_15,
"l9": iso8859_15,
"iso-8859-16": iso8859_16,
"cskoi8r": koi8r,
"koi": koi8r,
"koi8": koi8r,
"koi8-r": koi8r,
"koi8_r": koi8r,
"koi8-ru": koi8u,
"koi8-u": koi8u,
"csmacintosh": macintosh,
"mac": macintosh,
"macintosh": macintosh,
"x-mac-roman": macintosh,
"dos-874": windows874,
"iso-8859-11": windows874,
"iso8859-11": windows874,
"iso885911": windows874,
"tis-620": windows874,
"windows-874": windows874,
"cp1250": windows1250,
"windows-1250": windows1250,
"x-cp1250": windows1250,
"cp1251": windows1251,
"windows-1251": windows1251,
"x-cp1251": windows1251,
"ansi_x3.4-1968": windows1252,
"ascii": windows1252,
"cp1252": windows1252,
"cp819": windows1252,
"csisolatin1": windows1252,
"ibm819": windows1252,
"iso-8859-1": windows1252,
"iso-ir-100": windows1252,
"iso8859-1": windows1252,
"iso88591": windows1252,
"iso_8859-1": windows1252,
"iso_8859-1:1987": windows1252,
"l1": windows1252,
"latin1": windows1252,
"us-ascii": windows1252,
"windows-1252": windows1252,
"x-cp1252": windows1252,
"cp1253": windows1253,
"windows-1253": windows1253,
"x-cp1253": windows1253,
"cp1254": windows1254,
"csisolatin5": windows1254,
"iso-8859-9": windows1254,
"iso-ir-148": windows1254,
"iso8859-9": windows1254,
"iso88599": windows1254,
"iso_8859-9": windows1254,
"iso_8859-9:1989": windows1254,
"l5": windows1254,
"latin5": windows1254,
"windows-1254": windows1254,
"x-cp1254": windows1254,
"cp1255": windows1255,
"windows-1255": windows1255,
"x-cp1255": windows1255,
"cp1256": windows1256,
"windows-1256": windows1256,
"x-cp1256": windows1256,
"cp1257": windows1257,
"windows-1257": windows1257,
"x-cp1257": windows1257,
"cp1258": windows1258,
"windows-1258": windows1258,
"x-cp1258": windows1258,
"x-mac-cyrillic": macintoshCyrillic,
"x-mac-ukrainian": macintoshCyrillic,
"chinese": gbk,
"csgb2312": gbk,
"csiso58gb231280": gbk,
"gb2312": gbk,
"gb_2312": gbk,
"gb_2312-80": gbk,
"gbk": gbk,
"iso-ir-58": gbk,
"x-gbk": gbk,
"gb18030": gb18030,
"big5": big5,
"big5-hkscs": big5,
"cn-big5": big5,
"csbig5": big5,
"x-x-big5": big5,
"cseucpkdfmtjapanese": eucjp,
"euc-jp": eucjp,
"x-euc-jp": eucjp,
"csiso2022jp": iso2022jp,
"iso-2022-jp": iso2022jp,
"csshiftjis": shiftJIS,
"ms932": shiftJIS,
"ms_kanji": shiftJIS,
"shift-jis": shiftJIS,
"shift_jis": shiftJIS,
"sjis": shiftJIS,
"windows-31j": shiftJIS,
"x-sjis": shiftJIS,
"cseuckr": euckr,
"csksc56011987": euckr,
"euc-kr": euckr,
"iso-ir-149": euckr,
"korean": euckr,
"ks_c_5601-1987": euckr,
"ks_c_5601-1989": euckr,
"ksc5601": euckr,
"ksc_5601": euckr,
"windows-949": euckr,
"csiso2022kr": replacement,
"hz-gb-2312": replacement,
"iso-2022-cn": replacement,
"iso-2022-cn-ext": replacement,
"iso-2022-kr": replacement,
"utf-16be": utf16be,
"utf-16": utf16le,
"utf-16le": utf16le,
"x-user-defined": xUserDefined,
}
var localeMap = []htmlEncoding{
windows1252, // und_Latn
windows1256, // ar
windows1251, // ba
windows1251, // be
windows1251, // bg
windows1250, // cs
iso8859_7, // el
windows1257, // et
windows1256, // fa
windows1255, // he
windows1250, // hr
iso8859_2, // hu
shiftJIS, // ja
windows1251, // kk
euckr, // ko
windows1254, // ku
windows1251, // ky
windows1257, // lt
windows1257, // lv
windows1251, // mk
iso8859_2, // pl
windows1251, // ru
windows1251, // sah
windows1250, // sk
iso8859_2, // sl
windows1251, // sr
windows1251, // tg
windows874, // th
windows1254, // tr
windows1251, // tt
windows1251, // uk
windows1258, // vi
gb18030, // zh-hans
big5, // zh-hant
}
const locales = "und_Latn ar ba be bg cs el et fa he hr hu ja kk ko ku ky lt lv mk pl ru sah sk sl sr tg th tr tt uk vi zh-hans zh-hant"

192
vendor/golang.org/x/text/encoding/ianaindex/gen.go generated vendored
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@ -1,192 +0,0 @@
// Copyright 2017 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build ignore
package main
import (
"encoding/xml"
"fmt"
"io"
"log"
"sort"
"strconv"
"strings"
"golang.org/x/text/encoding/internal/identifier"
"golang.org/x/text/internal/gen"
)
type registry struct {
XMLName xml.Name `xml:"registry"`
Updated string `xml:"updated"`
Registry []struct {
ID string `xml:"id,attr"`
Record []struct {
Name string `xml:"name"`
Xref []struct {
Type string `xml:"type,attr"`
Data string `xml:"data,attr"`
} `xml:"xref"`
Desc struct {
Data string `xml:",innerxml"`
} `xml:"description,"`
MIB string `xml:"value"`
Alias []string `xml:"alias"`
MIME string `xml:"preferred_alias"`
} `xml:"record"`
} `xml:"registry"`
}
func main() {
r := gen.OpenIANAFile("assignments/character-sets/character-sets.xml")
reg := &registry{}
if err := xml.NewDecoder(r).Decode(&reg); err != nil && err != io.EOF {
log.Fatalf("Error decoding charset registry: %v", err)
}
if len(reg.Registry) == 0 || reg.Registry[0].ID != "character-sets-1" {
log.Fatalf("Unexpected ID %s", reg.Registry[0].ID)
}
x := &indexInfo{}
for _, rec := range reg.Registry[0].Record {
mib := identifier.MIB(parseInt(rec.MIB))
x.addEntry(mib, rec.Name)
for _, a := range rec.Alias {
a = strings.Split(a, " ")[0] // strip comments.
x.addAlias(a, mib)
// MIB name aliases are prefixed with a "cs" (character set) in the
// registry to identify them as display names and to ensure that
// the name starts with a lowercase letter in case it is used as
// an identifier. We remove it to be left with a nice clean name.
if strings.HasPrefix(a, "cs") {
x.setName(2, a[2:])
}
}
if rec.MIME != "" {
x.addAlias(rec.MIME, mib)
x.setName(1, rec.MIME)
}
}
w := gen.NewCodeWriter()
fmt.Fprintln(w, `import "golang.org/x/text/encoding/internal/identifier"`)
writeIndex(w, x)
w.WriteGoFile("tables.go", "ianaindex")
}
type alias struct {
name string
mib identifier.MIB
}
type indexInfo struct {
// compacted index from code to MIB
codeToMIB []identifier.MIB
alias []alias
names [][3]string
}
func (ii *indexInfo) Len() int {
return len(ii.codeToMIB)
}
func (ii *indexInfo) Less(a, b int) bool {
return ii.codeToMIB[a] < ii.codeToMIB[b]
}
func (ii *indexInfo) Swap(a, b int) {
ii.codeToMIB[a], ii.codeToMIB[b] = ii.codeToMIB[b], ii.codeToMIB[a]
// Co-sort the names.
ii.names[a], ii.names[b] = ii.names[b], ii.names[a]
}
func (ii *indexInfo) setName(i int, name string) {
ii.names[len(ii.names)-1][i] = name
}
func (ii *indexInfo) addEntry(mib identifier.MIB, name string) {
ii.names = append(ii.names, [3]string{name, name, name})
ii.addAlias(name, mib)
ii.codeToMIB = append(ii.codeToMIB, mib)
}
func (ii *indexInfo) addAlias(name string, mib identifier.MIB) {
// Don't add duplicates for the same mib. Adding duplicate aliases for
// different MIBs will cause the compiler to barf on an invalid map: great!.
for i := len(ii.alias) - 1; i >= 0 && ii.alias[i].mib == mib; i-- {
if ii.alias[i].name == name {
return
}
}
ii.alias = append(ii.alias, alias{name, mib})
lower := strings.ToLower(name)
if lower != name {
ii.addAlias(lower, mib)
}
}
const maxMIMENameLen = '0' - 1 // officially 40, but we leave some buffer.
func writeIndex(w *gen.CodeWriter, x *indexInfo) {
sort.Stable(x)
// Write constants.
fmt.Fprintln(w, "const (")
for i, m := range x.codeToMIB {
if i == 0 {
fmt.Fprintf(w, "enc%d = iota\n", m)
} else {
fmt.Fprintf(w, "enc%d\n", m)
}
}
fmt.Fprintln(w, "numIANA")
fmt.Fprintln(w, ")")
w.WriteVar("ianaToMIB", x.codeToMIB)
var ianaNames, mibNames []string
for _, names := range x.names {
n := names[0]
if names[0] != names[1] {
// MIME names are mostly identical to IANA names. We share the
// tables by setting the first byte of the string to an index into
// the string itself (< maxMIMENameLen) to the IANA name. The MIME
// name immediately follows the index.
x := len(names[1]) + 1
if x > maxMIMENameLen {
log.Fatalf("MIME name length (%d) > %d", x, maxMIMENameLen)
}
n = string(x) + names[1] + names[0]
}
ianaNames = append(ianaNames, n)
mibNames = append(mibNames, names[2])
}
w.WriteVar("ianaNames", ianaNames)
w.WriteVar("mibNames", mibNames)
w.WriteComment(`
TODO: Instead of using a map, we could use binary search strings doing
on-the fly lower-casing per character. This allows to always avoid
allocation and will be considerably more compact.`)
fmt.Fprintln(w, "var ianaAliases = map[string]int{")
for _, a := range x.alias {
fmt.Fprintf(w, "%q: enc%d,\n", a.name, a.mib)
}
fmt.Fprintln(w, "}")
}
func parseInt(s string) int {
x, err := strconv.ParseInt(s, 10, 64)
if err != nil {
log.Fatalf("Could not parse integer: %v", err)
}
return int(x)
}

209
vendor/golang.org/x/text/encoding/ianaindex/ianaindex.go generated vendored
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@ -1,209 +0,0 @@
// Copyright 2015 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
//go:generate go run gen.go
// Package ianaindex maps names to Encodings as specified by the IANA registry.
// This includes both the MIME and IANA names.
//
// See http://www.iana.org/assignments/character-sets/character-sets.xhtml for
// more details.
package ianaindex
import (
"errors"
"sort"
"strings"
"golang.org/x/text/encoding"
"golang.org/x/text/encoding/charmap"
"golang.org/x/text/encoding/internal/identifier"
"golang.org/x/text/encoding/japanese"
"golang.org/x/text/encoding/korean"
"golang.org/x/text/encoding/simplifiedchinese"
"golang.org/x/text/encoding/traditionalchinese"
"golang.org/x/text/encoding/unicode"
)
// TODO: remove the "Status... incomplete" in the package doc comment.
// TODO: allow users to specify their own aliases?
// TODO: allow users to specify their own indexes?
// TODO: allow canonicalizing names
// NOTE: only use these top-level variables if we can get the linker to drop
// the indexes when they are not used. Make them a function or perhaps only
// support MIME otherwise.
var (
// MIME is an index to map MIME names.
MIME *Index = mime
// IANA is an index that supports all names and aliases using IANA names as
// the canonical identifier.
IANA *Index = iana
// MIB is an index that associates the MIB display name with an Encoding.
MIB *Index = mib
mime = &Index{mimeName, ianaToMIB, ianaAliases, encodings[:]}
iana = &Index{ianaName, ianaToMIB, ianaAliases, encodings[:]}
mib = &Index{mibName, ianaToMIB, ianaAliases, encodings[:]}
)
// Index maps names registered by IANA to Encodings.
// Currently different Indexes only differ in the names they return for
// encodings. In the future they may also differ in supported aliases.
type Index struct {
names func(i int) string
toMIB []identifier.MIB // Sorted slice of supported MIBs
alias map[string]int
enc []encoding.Encoding
}
var (
errInvalidName = errors.New("ianaindex: invalid encoding name")
errUnknown = errors.New("ianaindex: unknown Encoding")
errUnsupported = errors.New("ianaindex: unsupported Encoding")
)
// Encoding returns an Encoding for IANA-registered names. Matching is
// case-insensitive.
func (x *Index) Encoding(name string) (encoding.Encoding, error) {
name = strings.TrimSpace(name)
// First try without lowercasing (possibly creating an allocation).
i, ok := x.alias[name]
if !ok {
i, ok = x.alias[strings.ToLower(name)]
if !ok {
return nil, errInvalidName
}
}
return x.enc[i], nil
}
// Name reports the canonical name of the given Encoding. It will return an
// error if the e is not associated with a known encoding scheme.
func (x *Index) Name(e encoding.Encoding) (string, error) {
id, ok := e.(identifier.Interface)
if !ok {
return "", errUnknown
}
mib, _ := id.ID()
if mib == 0 {
return "", errUnknown
}
v := findMIB(x.toMIB, mib)
if v == -1 {
return "", errUnsupported
}
return x.names(v), nil
}
// TODO: the coverage of this index is rather spotty. Allowing users to set
// encodings would allow:
// - users to increase coverage
// - allow a partially loaded set of encodings in case the user doesn't need to
// them all.
// - write an OS-specific wrapper for supported encodings and set them.
// The exact definition of Set depends a bit on if and how we want to let users
// write their own Encoding implementations. Also, it is not possible yet to
// only partially load the encodings without doing some refactoring. Until this
// is solved, we might as well not support Set.
// // Set sets the e to be used for the encoding scheme identified by name. Only
// // canonical names may be used. An empty name assigns e to its internally
// // associated encoding scheme.
// func (x *Index) Set(name string, e encoding.Encoding) error {
// panic("TODO: implement")
// }
func findMIB(x []identifier.MIB, mib identifier.MIB) int {
i := sort.Search(len(x), func(i int) bool { return x[i] >= mib })
if i < len(x) && x[i] == mib {
return i
}
return -1
}
const maxMIMENameLen = '0' - 1 // officially 40, but we leave some buffer.
func mimeName(x int) string {
n := ianaNames[x]
// See gen.go for a description of the encoding.
if n[0] <= maxMIMENameLen {
return n[1:n[0]]
}
return n
}
func ianaName(x int) string {
n := ianaNames[x]
// See gen.go for a description of the encoding.
if n[0] <= maxMIMENameLen {
return n[n[0]:]
}
return n
}
func mibName(x int) string {
return mibNames[x]
}
var encodings = [numIANA]encoding.Encoding{
enc106: unicode.UTF8,
enc1015: unicode.UTF16(unicode.BigEndian, unicode.UseBOM),
enc1013: unicode.UTF16(unicode.BigEndian, unicode.IgnoreBOM),
enc1014: unicode.UTF16(unicode.LittleEndian, unicode.IgnoreBOM),
enc2028: charmap.CodePage037,
enc2011: charmap.CodePage437,
enc2009: charmap.CodePage850,
enc2010: charmap.CodePage852,
enc2046: charmap.CodePage855,
enc2089: charmap.CodePage858,
enc2048: charmap.CodePage860,
enc2013: charmap.CodePage862,
enc2050: charmap.CodePage863,
enc2052: charmap.CodePage865,
enc2086: charmap.CodePage866,
enc2102: charmap.CodePage1047,
enc2091: charmap.CodePage1140,
enc4: charmap.ISO8859_1,
enc5: charmap.ISO8859_2,
enc6: charmap.ISO8859_3,
enc7: charmap.ISO8859_4,
enc8: charmap.ISO8859_5,
enc9: charmap.ISO8859_6,
enc81: charmap.ISO8859_6E,
enc82: charmap.ISO8859_6I,
enc10: charmap.ISO8859_7,
enc11: charmap.ISO8859_8,
enc84: charmap.ISO8859_8E,
enc85: charmap.ISO8859_8I,
enc12: charmap.ISO8859_9,
enc13: charmap.ISO8859_10,
enc109: charmap.ISO8859_13,
enc110: charmap.ISO8859_14,
enc111: charmap.ISO8859_15,
enc112: charmap.ISO8859_16,
enc2084: charmap.KOI8R,
enc2088: charmap.KOI8U,
enc2027: charmap.Macintosh,
enc2109: charmap.Windows874,
enc2250: charmap.Windows1250,
enc2251: charmap.Windows1251,
enc2252: charmap.Windows1252,
enc2253: charmap.Windows1253,
enc2254: charmap.Windows1254,
enc2255: charmap.Windows1255,
enc2256: charmap.Windows1256,
enc2257: charmap.Windows1257,
enc2258: charmap.Windows1258,
enc18: japanese.EUCJP,
enc39: japanese.ISO2022JP,
enc17: japanese.ShiftJIS,
enc38: korean.EUCKR,
enc114: simplifiedchinese.GB18030,
enc113: simplifiedchinese.GBK,
enc2085: simplifiedchinese.HZGB2312,
enc2026: traditionalchinese.Big5,
}

2348
vendor/golang.org/x/text/encoding/ianaindex/tables.go generated vendored
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180
vendor/golang.org/x/text/encoding/internal/enctest/enctest.go generated vendored
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// Copyright 2017 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package enctest
import (
"bytes"
"fmt"
"io"
"io/ioutil"
"strings"
"testing"
"golang.org/x/text/encoding"
"golang.org/x/text/encoding/internal/identifier"
"golang.org/x/text/transform"
)
// Encoder or Decoder
type Transcoder interface {
transform.Transformer
Bytes([]byte) ([]byte, error)
String(string) (string, error)
}
func TestEncoding(t *testing.T, e encoding.Encoding, encoded, utf8, prefix, suffix string) {
for _, direction := range []string{"Decode", "Encode"} {
t.Run(fmt.Sprintf("%v/%s", e, direction), func(t *testing.T) {
var coder Transcoder
var want, src, wPrefix, sPrefix, wSuffix, sSuffix string
if direction == "Decode" {
coder, want, src = e.NewDecoder(), utf8, encoded
wPrefix, sPrefix, wSuffix, sSuffix = "", prefix, "", suffix
} else {
coder, want, src = e.NewEncoder(), encoded, utf8
wPrefix, sPrefix, wSuffix, sSuffix = prefix, "", suffix, ""
}
dst := make([]byte, len(wPrefix)+len(want)+len(wSuffix))
nDst, nSrc, err := coder.Transform(dst, []byte(sPrefix+src+sSuffix), true)
if err != nil {
t.Fatal(err)
}
if nDst != len(wPrefix)+len(want)+len(wSuffix) {
t.Fatalf("nDst got %d, want %d",
nDst, len(wPrefix)+len(want)+len(wSuffix))
}
if nSrc != len(sPrefix)+len(src)+len(sSuffix) {
t.Fatalf("nSrc got %d, want %d",
nSrc, len(sPrefix)+len(src)+len(sSuffix))
}
if got := string(dst); got != wPrefix+want+wSuffix {
t.Fatalf("\ngot %q\nwant %q", got, wPrefix+want+wSuffix)
}
for _, n := range []int{0, 1, 2, 10, 123, 4567} {
input := sPrefix + strings.Repeat(src, n) + sSuffix
g, err := coder.String(input)
if err != nil {
t.Fatalf("Bytes: n=%d: %v", n, err)
}
if len(g) == 0 && len(input) == 0 {
// If the input is empty then the output can be empty,
// regardless of whatever wPrefix is.
continue
}
got1, want1 := string(g), wPrefix+strings.Repeat(want, n)+wSuffix
if got1 != want1 {
t.Fatalf("ReadAll: n=%d\ngot %q\nwant %q",
n, trim(got1), trim(want1))
}
}
})
}
}
func TestFile(t *testing.T, e encoding.Encoding) {
for _, dir := range []string{"Decode", "Encode"} {
t.Run(fmt.Sprintf("%s/%s", e, dir), func(t *testing.T) {
dst, src, transformer, err := load(dir, e)
if err != nil {
t.Fatalf("load: %v", err)
}
buf, err := transformer.Bytes(src)
if err != nil {
t.Fatalf("transform: %v", err)
}
if !bytes.Equal(buf, dst) {
t.Error("transformed bytes did not match golden file")
}
})
}
}
func Benchmark(b *testing.B, enc encoding.Encoding) {
for _, direction := range []string{"Decode", "Encode"} {
b.Run(fmt.Sprintf("%s/%s", enc, direction), func(b *testing.B) {
_, src, transformer, err := load(direction, enc)
if err != nil {
b.Fatal(err)
}
b.SetBytes(int64(len(src)))
b.ResetTimer()
for i := 0; i < b.N; i++ {
r := transform.NewReader(bytes.NewReader(src), transformer)
io.Copy(ioutil.Discard, r)
}
})
}
}
// testdataFiles are files in testdata/*.txt.
var testdataFiles = []struct {
mib identifier.MIB
basename, ext string
}{
{identifier.Windows1252, "candide", "windows-1252"},
{identifier.EUCPkdFmtJapanese, "rashomon", "euc-jp"},
{identifier.ISO2022JP, "rashomon", "iso-2022-jp"},
{identifier.ShiftJIS, "rashomon", "shift-jis"},
{identifier.EUCKR, "unsu-joh-eun-nal", "euc-kr"},
{identifier.GBK, "sunzi-bingfa-simplified", "gbk"},
{identifier.HZGB2312, "sunzi-bingfa-gb-levels-1-and-2", "hz-gb2312"},
{identifier.Big5, "sunzi-bingfa-traditional", "big5"},
{identifier.UTF16LE, "candide", "utf-16le"},
{identifier.UTF8, "candide", "utf-8"},
{identifier.UTF32BE, "candide", "utf-32be"},
// GB18030 is a superset of GBK and is nominally a Simplified Chinese
// encoding, but it can also represent the entire Basic Multilingual
// Plane, including codepoints like 'â' that aren't encodable by GBK.
// GB18030 on Simplified Chinese should perform similarly to GBK on
// Simplified Chinese. GB18030 on "candide" is more interesting.
{identifier.GB18030, "candide", "gb18030"},
}
func load(direction string, enc encoding.Encoding) ([]byte, []byte, Transcoder, error) {
basename, ext, count := "", "", 0
for _, tf := range testdataFiles {
if mib, _ := enc.(identifier.Interface).ID(); tf.mib == mib {
basename, ext = tf.basename, tf.ext
count++
}
}
if count != 1 {
if count == 0 {
return nil, nil, nil, fmt.Errorf("no testdataFiles for %s", enc)
}
return nil, nil, nil, fmt.Errorf("too many testdataFiles for %s", enc)
}
dstFile := fmt.Sprintf("../testdata/%s-%s.txt", basename, ext)
srcFile := fmt.Sprintf("../testdata/%s-utf-8.txt", basename)
var coder Transcoder = encoding.ReplaceUnsupported(enc.NewEncoder())
if direction == "Decode" {
dstFile, srcFile = srcFile, dstFile
coder = enc.NewDecoder()
}
dst, err := ioutil.ReadFile(dstFile)
if err != nil {
if dst, err = ioutil.ReadFile("../" + dstFile); err != nil {
return nil, nil, nil, err
}
}
src, err := ioutil.ReadFile(srcFile)
if err != nil {
if src, err = ioutil.ReadFile("../" + srcFile); err != nil {
return nil, nil, nil, err
}
}
return dst, src, coder, nil
}
func trim(s string) string {
if len(s) < 120 {
return s
}
return s[:50] + "..." + s[len(s)-50:]
}

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vendor/golang.org/x/text/encoding/unicode/override.go generated vendored
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@ -1,82 +0,0 @@
// Copyright 2015 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package unicode
import (
"golang.org/x/text/transform"
)
// BOMOverride returns a new decoder transformer that is identical to fallback,
// except that the presence of a Byte Order Mark at the start of the input
// causes it to switch to the corresponding Unicode decoding. It will only
// consider BOMs for UTF-8, UTF-16BE, and UTF-16LE.
//
// This differs from using ExpectBOM by allowing a BOM to switch to UTF-8, not
// just UTF-16 variants, and allowing falling back to any encoding scheme.
//
// This technique is recommended by the W3C for use in HTML 5: "For
// compatibility with deployed content, the byte order mark (also known as BOM)
// is considered more authoritative than anything else."
// http://www.w3.org/TR/encoding/#specification-hooks
//
// Using BOMOverride is mostly intended for use cases where the first characters
// of a fallback encoding are known to not be a BOM, for example, for valid HTML
// and most encodings.
func BOMOverride(fallback transform.Transformer) transform.Transformer {
// TODO: possibly allow a variadic argument of unicode encodings to allow
// specifying details of which fallbacks are supported as well as
// specifying the details of the implementations. This would also allow for
// support for UTF-32, which should not be supported by default.
return &bomOverride{fallback: fallback}
}
type bomOverride struct {
fallback transform.Transformer
current transform.Transformer
}
func (d *bomOverride) Reset() {
d.current = nil
d.fallback.Reset()
}
var (
// TODO: we could use decode functions here, instead of allocating a new
// decoder on every NewDecoder as IgnoreBOM decoders can be stateless.
utf16le = UTF16(LittleEndian, IgnoreBOM)
utf16be = UTF16(BigEndian, IgnoreBOM)
)
const utf8BOM = "\ufeff"
func (d *bomOverride) Transform(dst, src []byte, atEOF bool) (nDst, nSrc int, err error) {
if d.current != nil {
return d.current.Transform(dst, src, atEOF)
}
if len(src) < 3 && !atEOF {
return 0, 0, transform.ErrShortSrc
}
d.current = d.fallback
bomSize := 0
if len(src) >= 2 {
if src[0] == 0xFF && src[1] == 0xFE {
d.current = utf16le.NewDecoder()
bomSize = 2
} else if src[0] == 0xFE && src[1] == 0xFF {
d.current = utf16be.NewDecoder()
bomSize = 2
} else if len(src) >= 3 &&
src[0] == utf8BOM[0] &&
src[1] == utf8BOM[1] &&
src[2] == utf8BOM[2] {
d.current = transform.Nop
bomSize = 3
}
}
if bomSize < len(src) {
nDst, nSrc, err = d.current.Transform(dst, src[bomSize:], atEOF)
}
return nDst, nSrc + bomSize, err
}

434
vendor/golang.org/x/text/encoding/unicode/unicode.go generated vendored
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@ -1,434 +0,0 @@
// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Package unicode provides Unicode encodings such as UTF-16.
package unicode // import "golang.org/x/text/encoding/unicode"
import (
"errors"
"unicode/utf16"
"unicode/utf8"
"golang.org/x/text/encoding"
"golang.org/x/text/encoding/internal"
"golang.org/x/text/encoding/internal/identifier"
"golang.org/x/text/internal/utf8internal"
"golang.org/x/text/runes"
"golang.org/x/text/transform"
)
// TODO: I think the Transformers really should return errors on unmatched
// surrogate pairs and odd numbers of bytes. This is not required by RFC 2781,
// which leaves it open, but is suggested by WhatWG. It will allow for all error
// modes as defined by WhatWG: fatal, HTML and Replacement. This would require
// the introduction of some kind of error type for conveying the erroneous code
// point.
// UTF8 is the UTF-8 encoding.
var UTF8 encoding.Encoding = utf8enc
var utf8enc = &internal.Encoding{
&internal.SimpleEncoding{utf8Decoder{}, runes.ReplaceIllFormed()},
"UTF-8",
identifier.UTF8,
}
type utf8Decoder struct{ transform.NopResetter }
func (utf8Decoder) Transform(dst, src []byte, atEOF bool) (nDst, nSrc int, err error) {
var pSrc int // point from which to start copy in src
var accept utf8internal.AcceptRange
// The decoder can only make the input larger, not smaller.
n := len(src)
if len(dst) < n {
err = transform.ErrShortDst
n = len(dst)
atEOF = false
}
for nSrc < n {
c := src[nSrc]
if c < utf8.RuneSelf {
nSrc++
continue
}
first := utf8internal.First[c]
size := int(first & utf8internal.SizeMask)
if first == utf8internal.FirstInvalid {
goto handleInvalid // invalid starter byte
}
accept = utf8internal.AcceptRanges[first>>utf8internal.AcceptShift]
if nSrc+size > n {
if !atEOF {
// We may stop earlier than necessary here if the short sequence
// has invalid bytes. Not checking for this simplifies the code
// and may avoid duplicate computations in certain conditions.
if err == nil {
err = transform.ErrShortSrc
}
break
}
// Determine the maximal subpart of an ill-formed subsequence.
switch {
case nSrc+1 >= n || src[nSrc+1] < accept.Lo || accept.Hi < src[nSrc+1]:
size = 1
case nSrc+2 >= n || src[nSrc+2] < utf8internal.LoCB || utf8internal.HiCB < src[nSrc+2]:
size = 2
default:
size = 3 // As we are short, the maximum is 3.
}
goto handleInvalid
}
if c = src[nSrc+1]; c < accept.Lo || accept.Hi < c {
size = 1
goto handleInvalid // invalid continuation byte
} else if size == 2 {
} else if c = src[nSrc+2]; c < utf8internal.LoCB || utf8internal.HiCB < c {
size = 2
goto handleInvalid // invalid continuation byte
} else if size == 3 {
} else if c = src[nSrc+3]; c < utf8internal.LoCB || utf8internal.HiCB < c {
size = 3
goto handleInvalid // invalid continuation byte
}
nSrc += size
continue
handleInvalid:
// Copy the scanned input so far.
nDst += copy(dst[nDst:], src[pSrc:nSrc])
// Append RuneError to the destination.
const runeError = "\ufffd"
if nDst+len(runeError) > len(dst) {
return nDst, nSrc, transform.ErrShortDst
}
nDst += copy(dst[nDst:], runeError)
// Skip the maximal subpart of an ill-formed subsequence according to
// the W3C standard way instead of the Go way. This Transform is
// probably the only place in the text repo where it is warranted.
nSrc += size
pSrc = nSrc
// Recompute the maximum source length.
if sz := len(dst) - nDst; sz < len(src)-nSrc {
err = transform.ErrShortDst
n = nSrc + sz
atEOF = false
}
}
return nDst + copy(dst[nDst:], src[pSrc:nSrc]), nSrc, err
}
// UTF16 returns a UTF-16 Encoding for the given default endianness and byte
// order mark (BOM) policy.
//
// When decoding from UTF-16 to UTF-8, if the BOMPolicy is IgnoreBOM then
// neither BOMs U+FEFF nor noncharacters U+FFFE in the input stream will affect
// the endianness used for decoding, and will instead be output as their
// standard UTF-8 encodings: "\xef\xbb\xbf" and "\xef\xbf\xbe". If the BOMPolicy
// is UseBOM or ExpectBOM a staring BOM is not written to the UTF-8 output.
// Instead, it overrides the default endianness e for the remainder of the
// transformation. Any subsequent BOMs U+FEFF or noncharacters U+FFFE will not
// affect the endianness used, and will instead be output as their standard
// UTF-8 encodings. For UseBOM, if there is no starting BOM, it will proceed
// with the default Endianness. For ExpectBOM, in that case, the transformation
// will return early with an ErrMissingBOM error.
//
// When encoding from UTF-8 to UTF-16, a BOM will be inserted at the start of
// the output if the BOMPolicy is UseBOM or ExpectBOM. Otherwise, a BOM will not
// be inserted. The UTF-8 input does not need to contain a BOM.
//
// There is no concept of a 'native' endianness. If the UTF-16 data is produced
// and consumed in a greater context that implies a certain endianness, use
// IgnoreBOM. Otherwise, use ExpectBOM and always produce and consume a BOM.
//
// In the language of http://www.unicode.org/faq/utf_bom.html#bom10, IgnoreBOM
// corresponds to "Where the precise type of the data stream is known... the
// BOM should not be used" and ExpectBOM corresponds to "A particular
// protocol... may require use of the BOM".
func UTF16(e Endianness, b BOMPolicy) encoding.Encoding {
return utf16Encoding{config{e, b}, mibValue[e][b&bomMask]}
}
// mibValue maps Endianness and BOMPolicy settings to MIB constants. Note that
// some configurations map to the same MIB identifier. RFC 2781 has requirements
// and recommendations. Some of the "configurations" are merely recommendations,
// so multiple configurations could match.
var mibValue = map[Endianness][numBOMValues]identifier.MIB{
BigEndian: [numBOMValues]identifier.MIB{
IgnoreBOM: identifier.UTF16BE,
UseBOM: identifier.UTF16, // BigEnding default is preferred by RFC 2781.
// TODO: acceptBOM | strictBOM would map to UTF16BE as well.
},
LittleEndian: [numBOMValues]identifier.MIB{
IgnoreBOM: identifier.UTF16LE,
UseBOM: identifier.UTF16, // LittleEndian default is allowed and preferred on Windows.
// TODO: acceptBOM | strictBOM would map to UTF16LE as well.
},
// ExpectBOM is not widely used and has no valid MIB identifier.
}
// All lists a configuration for each IANA-defined UTF-16 variant.
var All = []encoding.Encoding{
UTF8,
UTF16(BigEndian, UseBOM),
UTF16(BigEndian, IgnoreBOM),
UTF16(LittleEndian, IgnoreBOM),
}
// BOMPolicy is a UTF-16 encoding's byte order mark policy.
type BOMPolicy uint8
const (
writeBOM BOMPolicy = 0x01
acceptBOM BOMPolicy = 0x02
requireBOM BOMPolicy = 0x04
bomMask BOMPolicy = 0x07
// HACK: numBOMValues == 8 triggers a bug in the 1.4 compiler (cannot have a
// map of an array of length 8 of a type that is also used as a key or value
// in another map). See golang.org/issue/11354.
// TODO: consider changing this value back to 8 if the use of 1.4.* has
// been minimized.
numBOMValues = 8 + 1
// IgnoreBOM means to ignore any byte order marks.
IgnoreBOM BOMPolicy = 0
// Common and RFC 2781-compliant interpretation for UTF-16BE/LE.
// UseBOM means that the UTF-16 form may start with a byte order mark, which
// will be used to override the default encoding.
UseBOM BOMPolicy = writeBOM | acceptBOM
// Common and RFC 2781-compliant interpretation for UTF-16.
// ExpectBOM means that the UTF-16 form must start with a byte order mark,
// which will be used to override the default encoding.
ExpectBOM BOMPolicy = writeBOM | acceptBOM | requireBOM
// Used in Java as Unicode (not to be confused with Java's UTF-16) and
// ICU's UTF-16,version=1. Not compliant with RFC 2781.
// TODO (maybe): strictBOM: BOM must match Endianness. This would allow:
// - UTF-16(B|L)E,version=1: writeBOM | acceptBOM | requireBOM | strictBOM
// (UnicodeBig and UnicodeLittle in Java)
// - RFC 2781-compliant, but less common interpretation for UTF-16(B|L)E:
// acceptBOM | strictBOM (e.g. assigned to CheckBOM).
// This addition would be consistent with supporting ExpectBOM.
)
// Endianness is a UTF-16 encoding's default endianness.
type Endianness bool
const (
// BigEndian is UTF-16BE.
BigEndian Endianness = false
// LittleEndian is UTF-16LE.
LittleEndian Endianness = true
)
// ErrMissingBOM means that decoding UTF-16 input with ExpectBOM did not find a
// starting byte order mark.
var ErrMissingBOM = errors.New("encoding: missing byte order mark")
type utf16Encoding struct {
config
mib identifier.MIB
}
type config struct {
endianness Endianness
bomPolicy BOMPolicy
}
func (u utf16Encoding) NewDecoder() *encoding.Decoder {
return &encoding.Decoder{Transformer: &utf16Decoder{
initial: u.config,
current: u.config,
}}
}
func (u utf16Encoding) NewEncoder() *encoding.Encoder {
return &encoding.Encoder{Transformer: &utf16Encoder{
endianness: u.endianness,
initialBOMPolicy: u.bomPolicy,
currentBOMPolicy: u.bomPolicy,
}}
}
func (u utf16Encoding) ID() (mib identifier.MIB, other string) {
return u.mib, ""
}
func (u utf16Encoding) String() string {
e, b := "B", ""
if u.endianness == LittleEndian {
e = "L"
}
switch u.bomPolicy {
case ExpectBOM:
b = "Expect"
case UseBOM:
b = "Use"
case IgnoreBOM:
b = "Ignore"
}
return "UTF-16" + e + "E (" + b + " BOM)"
}
type utf16Decoder struct {
initial config
current config
}
func (u *utf16Decoder) Reset() {
u.current = u.initial
}
func (u *utf16Decoder) Transform(dst, src []byte, atEOF bool) (nDst, nSrc int, err error) {
if len(src) == 0 {
if atEOF && u.current.bomPolicy&requireBOM != 0 {
return 0, 0, ErrMissingBOM
}
return 0, 0, nil
}
if u.current.bomPolicy&acceptBOM != 0 {
if len(src) < 2 {
return 0, 0, transform.ErrShortSrc
}
switch {
case src[0] == 0xfe && src[1] == 0xff:
u.current.endianness = BigEndian
nSrc = 2
case src[0] == 0xff && src[1] == 0xfe:
u.current.endianness = LittleEndian
nSrc = 2
default:
if u.current.bomPolicy&requireBOM != 0 {
return 0, 0, ErrMissingBOM
}
}
u.current.bomPolicy = IgnoreBOM
}
var r rune
var dSize, sSize int
for nSrc < len(src) {
if nSrc+1 < len(src) {
x := uint16(src[nSrc+0])<<8 | uint16(src[nSrc+1])
if u.current.endianness == LittleEndian {
x = x>>8 | x<<8
}
r, sSize = rune(x), 2
if utf16.IsSurrogate(r) {
if nSrc+3 < len(src) {
x = uint16(src[nSrc+2])<<8 | uint16(src[nSrc+3])
if u.current.endianness == LittleEndian {
x = x>>8 | x<<8
}
// Save for next iteration if it is not a high surrogate.
if isHighSurrogate(rune(x)) {
r, sSize = utf16.DecodeRune(r, rune(x)), 4
}
} else if !atEOF {
err = transform.ErrShortSrc
break
}
}
if dSize = utf8.RuneLen(r); dSize < 0 {
r, dSize = utf8.RuneError, 3
}
} else if atEOF {
// Single trailing byte.
r, dSize, sSize = utf8.RuneError, 3, 1
} else {
err = transform.ErrShortSrc
break
}
if nDst+dSize > len(dst) {
err = transform.ErrShortDst
break
}
nDst += utf8.EncodeRune(dst[nDst:], r)
nSrc += sSize
}
return nDst, nSrc, err
}
func isHighSurrogate(r rune) bool {
return 0xDC00 <= r && r <= 0xDFFF
}
type utf16Encoder struct {
endianness Endianness
initialBOMPolicy BOMPolicy
currentBOMPolicy BOMPolicy
}
func (u *utf16Encoder) Reset() {
u.currentBOMPolicy = u.initialBOMPolicy
}
func (u *utf16Encoder) Transform(dst, src []byte, atEOF bool) (nDst, nSrc int, err error) {
if u.currentBOMPolicy&writeBOM != 0 {
if len(dst) < 2 {
return 0, 0, transform.ErrShortDst
}
dst[0], dst[1] = 0xfe, 0xff
u.currentBOMPolicy = IgnoreBOM
nDst = 2
}
r, size := rune(0), 0
for nSrc < len(src) {
r = rune(src[nSrc])
// Decode a 1-byte rune.
if r < utf8.RuneSelf {
size = 1
} else {
// Decode a multi-byte rune.
r, size = utf8.DecodeRune(src[nSrc:])
if size == 1 {
// All valid runes of size 1 (those below utf8.RuneSelf) were
// handled above. We have invalid UTF-8 or we haven't seen the
// full character yet.
if !atEOF && !utf8.FullRune(src[nSrc:]) {
err = transform.ErrShortSrc
break
}
}
}
if r <= 0xffff {
if nDst+2 > len(dst) {
err = transform.ErrShortDst
break
}
dst[nDst+0] = uint8(r >> 8)
dst[nDst+1] = uint8(r)
nDst += 2
} else {
if nDst+4 > len(dst) {
err = transform.ErrShortDst
break
}
r1, r2 := utf16.EncodeRune(r)
dst[nDst+0] = uint8(r1 >> 8)
dst[nDst+1] = uint8(r1)
dst[nDst+2] = uint8(r2 >> 8)
dst[nDst+3] = uint8(r2)
nDst += 4
}
nSrc += size
}
if u.endianness == LittleEndian {
for i := 0; i < nDst; i += 2 {
dst[i], dst[i+1] = dst[i+1], dst[i]
}
}
return nDst, nSrc, err
}

296
vendor/golang.org/x/text/encoding/unicode/utf32/utf32.go generated vendored
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@ -1,296 +0,0 @@
// Copyright 2016 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Package utf32 provides the UTF-32 Unicode encoding.
//
// Please note that support for UTF-32 is discouraged as it is a rare and
// inefficient encoding, unfit for use as an interchange format. For use
// on the web, the W3C strongly discourages its use
// (https://www.w3.org/TR/html5/document-metadata.html#charset)
// while WHATWG directly prohibits supporting it
// (https://html.spec.whatwg.org/multipage/syntax.html#character-encodings).
package utf32 // import "golang.org/x/text/encoding/unicode/utf32"
import (
"errors"
"unicode/utf8"
"golang.org/x/text/encoding"
"golang.org/x/text/encoding/internal/identifier"
"golang.org/x/text/transform"
)
// All lists a configuration for each IANA-defined UTF-32 variant.
var All = []encoding.Encoding{
UTF32(BigEndian, UseBOM),
UTF32(BigEndian, IgnoreBOM),
UTF32(LittleEndian, IgnoreBOM),
}
// ErrMissingBOM means that decoding UTF-32 input with ExpectBOM did not
// find a starting byte order mark.
var ErrMissingBOM = errors.New("encoding: missing byte order mark")
// UTF32 returns a UTF-32 Encoding for the given default endianness and
// byte order mark (BOM) policy.
//
// When decoding from UTF-32 to UTF-8, if the BOMPolicy is IgnoreBOM then
// neither BOMs U+FEFF nor ill-formed code units 0xFFFE0000 in the input
// stream will affect the endianness used for decoding. Instead BOMs will
// be output as their standard UTF-8 encoding "\xef\xbb\xbf" while
// 0xFFFE0000 code units will be output as "\xef\xbf\xbd", the standard
// UTF-8 encoding for the Unicode replacement character. If the BOMPolicy
// is UseBOM or ExpectBOM a starting BOM is not written to the UTF-8
// output. Instead, it overrides the default endianness e for the remainder
// of the transformation. Any subsequent BOMs U+FEFF or ill-formed code
// units 0xFFFE0000 will not affect the endianness used, and will instead
// be output as their standard UTF-8 (replacement) encodings. For UseBOM,
// if there is no starting BOM, it will proceed with the default
// Endianness. For ExpectBOM, in that case, the transformation will return
// early with an ErrMissingBOM error.
//
// When encoding from UTF-8 to UTF-32, a BOM will be inserted at the start
// of the output if the BOMPolicy is UseBOM or ExpectBOM. Otherwise, a BOM
// will not be inserted. The UTF-8 input does not need to contain a BOM.
//
// There is no concept of a 'native' endianness. If the UTF-32 data is
// produced and consumed in a greater context that implies a certain
// endianness, use IgnoreBOM. Otherwise, use ExpectBOM and always produce
// and consume a BOM.
//
// In the language of http://www.unicode.org/faq/utf_bom.html#bom10,
// IgnoreBOM corresponds to "Where the precise type of the data stream is
// known... the BOM should not be used" and ExpectBOM corresponds to "A
// particular protocol... may require use of the BOM".
func UTF32(e Endianness, b BOMPolicy) encoding.Encoding {
return utf32Encoding{config{e, b}, mibValue[e][b&bomMask]}
}
// mibValue maps Endianness and BOMPolicy settings to MIB constants for UTF-32.
// Note that some configurations map to the same MIB identifier.
var mibValue = map[Endianness][numBOMValues]identifier.MIB{
BigEndian: [numBOMValues]identifier.MIB{
IgnoreBOM: identifier.UTF32BE,
UseBOM: identifier.UTF32,
},
LittleEndian: [numBOMValues]identifier.MIB{
IgnoreBOM: identifier.UTF32LE,
UseBOM: identifier.UTF32,
},
// ExpectBOM is not widely used and has no valid MIB identifier.
}
// BOMPolicy is a UTF-32 encodings's byte order mark policy.
type BOMPolicy uint8
const (
writeBOM BOMPolicy = 0x01
acceptBOM BOMPolicy = 0x02
requireBOM BOMPolicy = 0x04
bomMask BOMPolicy = 0x07
// HACK: numBOMValues == 8 triggers a bug in the 1.4 compiler (cannot have a
// map of an array of length 8 of a type that is also used as a key or value
// in another map). See golang.org/issue/11354.
// TODO: consider changing this value back to 8 if the use of 1.4.* has
// been minimized.
numBOMValues = 8 + 1
// IgnoreBOM means to ignore any byte order marks.
IgnoreBOM BOMPolicy = 0
// Unicode-compliant interpretation for UTF-32BE/LE.
// UseBOM means that the UTF-32 form may start with a byte order mark,
// which will be used to override the default encoding.
UseBOM BOMPolicy = writeBOM | acceptBOM
// Unicode-compliant interpretation for UTF-32.
// ExpectBOM means that the UTF-32 form must start with a byte order mark,
// which will be used to override the default encoding.
ExpectBOM BOMPolicy = writeBOM | acceptBOM | requireBOM
// Consistent with BOMPolicy definition in golang.org/x/text/encoding/unicode
)
// Endianness is a UTF-32 encoding's default endianness.
type Endianness bool
const (
// BigEndian is UTF-32BE.
BigEndian Endianness = false
// LittleEndian is UTF-32LE.
LittleEndian Endianness = true
)
type config struct {
endianness Endianness
bomPolicy BOMPolicy
}
type utf32Encoding struct {
config
mib identifier.MIB
}
func (u utf32Encoding) NewDecoder() *encoding.Decoder {
return &encoding.Decoder{Transformer: &utf32Decoder{
initial: u.config,
current: u.config,
}}
}
func (u utf32Encoding) NewEncoder() *encoding.Encoder {
return &encoding.Encoder{Transformer: &utf32Encoder{
endianness: u.endianness,
initialBOMPolicy: u.bomPolicy,
currentBOMPolicy: u.bomPolicy,
}}
}
func (u utf32Encoding) ID() (mib identifier.MIB, other string) {
return u.mib, ""
}
func (u utf32Encoding) String() string {
e, b := "B", ""
if u.endianness == LittleEndian {
e = "L"
}
switch u.bomPolicy {
case ExpectBOM:
b = "Expect"
case UseBOM:
b = "Use"
case IgnoreBOM:
b = "Ignore"
}
return "UTF-32" + e + "E (" + b + " BOM)"
}
type utf32Decoder struct {
initial config
current config
}
func (u *utf32Decoder) Reset() {
u.current = u.initial
}
func (u *utf32Decoder) Transform(dst, src []byte, atEOF bool) (nDst, nSrc int, err error) {
if len(src) == 0 {
if atEOF && u.current.bomPolicy&requireBOM != 0 {
return 0, 0, ErrMissingBOM
}
return 0, 0, nil
}
if u.current.bomPolicy&acceptBOM != 0 {
if len(src) < 4 {
return 0, 0, transform.ErrShortSrc
}
switch {
case src[0] == 0x00 && src[1] == 0x00 && src[2] == 0xfe && src[3] == 0xff:
u.current.endianness = BigEndian
nSrc = 4
case src[0] == 0xff && src[1] == 0xfe && src[2] == 0x00 && src[3] == 0x00:
u.current.endianness = LittleEndian
nSrc = 4
default:
if u.current.bomPolicy&requireBOM != 0 {
return 0, 0, ErrMissingBOM
}
}
u.current.bomPolicy = IgnoreBOM
}
var r rune
var dSize, sSize int
for nSrc < len(src) {
if nSrc+3 < len(src) {
x := uint32(src[nSrc+0])<<24 | uint32(src[nSrc+1])<<16 |
uint32(src[nSrc+2])<<8 | uint32(src[nSrc+3])
if u.current.endianness == LittleEndian {
x = x>>24 | (x >> 8 & 0x0000FF00) | (x << 8 & 0x00FF0000) | x<<24
}
r, sSize = rune(x), 4
if dSize = utf8.RuneLen(r); dSize < 0 {
r, dSize = utf8.RuneError, 3
}
} else if atEOF {
// 1..3 trailing bytes.
r, dSize, sSize = utf8.RuneError, 3, len(src)-nSrc
} else {
err = transform.ErrShortSrc
break
}
if nDst+dSize > len(dst) {
err = transform.ErrShortDst
break
}
nDst += utf8.EncodeRune(dst[nDst:], r)
nSrc += sSize
}
return nDst, nSrc, err
}
type utf32Encoder struct {
endianness Endianness
initialBOMPolicy BOMPolicy
currentBOMPolicy BOMPolicy
}
func (u *utf32Encoder) Reset() {
u.currentBOMPolicy = u.initialBOMPolicy
}
func (u *utf32Encoder) Transform(dst, src []byte, atEOF bool) (nDst, nSrc int, err error) {
if u.currentBOMPolicy&writeBOM != 0 {
if len(dst) < 4 {
return 0, 0, transform.ErrShortDst
}
dst[0], dst[1], dst[2], dst[3] = 0x00, 0x00, 0xfe, 0xff
u.currentBOMPolicy = IgnoreBOM
nDst = 4
}
r, size := rune(0), 0
for nSrc < len(src) {
r = rune(src[nSrc])
// Decode a 1-byte rune.
if r < utf8.RuneSelf {
size = 1
} else {
// Decode a multi-byte rune.
r, size = utf8.DecodeRune(src[nSrc:])
if size == 1 {
// All valid runes of size 1 (those below utf8.RuneSelf) were
// handled above. We have invalid UTF-8 or we haven't seen the
// full character yet.
if !atEOF && !utf8.FullRune(src[nSrc:]) {
err = transform.ErrShortSrc
break
}
}
}
if nDst+4 > len(dst) {
err = transform.ErrShortDst
break
}
dst[nDst+0] = uint8(r >> 24)
dst[nDst+1] = uint8(r >> 16)
dst[nDst+2] = uint8(r >> 8)
dst[nDst+3] = uint8(r)
nDst += 4
nSrc += size
}
if u.endianness == LittleEndian {
for i := 0; i < nDst; i += 4 {
dst[i], dst[i+1], dst[i+2], dst[i+3] = dst[i+3], dst[i+2], dst[i+1], dst[i]
}
}
return nDst, nSrc, err
}

27
vendor/golang.org/x/text/internal/format/LICENSE generated vendored
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@ -1,27 +0,0 @@
Copyright (c) 2009 The Go Authors. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above
copyright notice, this list of conditions and the following disclaimer
in the documentation and/or other materials provided with the
distribution.
* Neither the name of Google Inc. nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

41
vendor/golang.org/x/text/internal/format/format.go generated vendored
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@ -1,41 +0,0 @@
// Copyright 2015 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Package format contains types for defining language-specific formatting of
// values.
//
// This package is internal now, but will eventually be exposed after the API
// settles.
package format // import "golang.org/x/text/internal/format"
import (
"fmt"
"golang.org/x/text/language"
)
// State represents the printer state passed to custom formatters. It provides
// access to the fmt.State interface and the sentence and language-related
// context.
type State interface {
fmt.State
// Language reports the requested language in which to render a message.
Language() language.Tag
// TODO: consider this and removing rune from the Format method in the
// Formatter interface.
//
// Verb returns the format variant to render, analogous to the types used
// in fmt. Use 'v' for the default or only variant.
// Verb() rune
// TODO: more info:
// - sentence context such as linguistic features passed by the translator.
}
// Formatter is analogous to fmt.Formatter.
type Formatter interface {
Format(state State, verb rune)
}

358
vendor/golang.org/x/text/internal/format/parser.go generated vendored
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@ -1,358 +0,0 @@
// Copyright 2017 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package format
import (
"reflect"
"unicode/utf8"
)
// A Parser parses a format string. The result from the parse are set in the
// struct fields.
type Parser struct {
Verb rune
WidthPresent bool
PrecPresent bool
Minus bool
Plus bool
Sharp bool
Space bool
Zero bool
// For the formats %+v %#v, we set the plusV/sharpV flags
// and clear the plus/sharp flags since %+v and %#v are in effect
// different, flagless formats set at the top level.
PlusV bool
SharpV bool
HasIndex bool
Width int
Prec int // precision
// retain arguments across calls.
Args []interface{}
// retain current argument number across calls
ArgNum int
// reordered records whether the format string used argument reordering.
Reordered bool
// goodArgNum records whether the most recent reordering directive was valid.
goodArgNum bool
// position info
format string
startPos int
endPos int
Status Status
}
// Reset initializes a parser to scan format strings for the given args.
func (p *Parser) Reset(args []interface{}) {
p.Args = args
p.ArgNum = 0
p.startPos = 0
p.Reordered = false
}
// Text returns the part of the format string that was parsed by the last call
// to Scan. It returns the original substitution clause if the current scan
// parsed a substitution.
func (p *Parser) Text() string { return p.format[p.startPos:p.endPos] }
// SetFormat sets a new format string to parse. It does not reset the argument
// count.
func (p *Parser) SetFormat(format string) {
p.format = format
p.startPos = 0
p.endPos = 0
}
// Status indicates the result type of a call to Scan.
type Status int
const (
StatusText Status = iota
StatusSubstitution
StatusBadWidthSubstitution
StatusBadPrecSubstitution
StatusNoVerb
StatusBadArgNum
StatusMissingArg
)
// ClearFlags reset the parser to default behavior.
func (p *Parser) ClearFlags() {
p.WidthPresent = false
p.PrecPresent = false
p.Minus = false
p.Plus = false
p.Sharp = false
p.Space = false
p.Zero = false
p.PlusV = false
p.SharpV = false
p.HasIndex = false
}
// Scan scans the next part of the format string and sets the status to
// indicate whether it scanned a string literal, substitution or error.
func (p *Parser) Scan() bool {
p.Status = StatusText
format := p.format
end := len(format)
if p.endPos >= end {
return false
}
afterIndex := false // previous item in format was an index like [3].
p.startPos = p.endPos
p.goodArgNum = true
i := p.startPos
for i < end && format[i] != '%' {
i++
}
if i > p.startPos {
p.endPos = i
return true
}
// Process one verb
i++
p.Status = StatusSubstitution
// Do we have flags?
p.ClearFlags()
simpleFormat:
for ; i < end; i++ {
c := p.format[i]
switch c {
case '#':
p.Sharp = true
case '0':
p.Zero = !p.Minus // Only allow zero padding to the left.
case '+':
p.Plus = true
case '-':
p.Minus = true
p.Zero = false // Do not pad with zeros to the right.
case ' ':
p.Space = true
default:
// Fast path for common case of ascii lower case simple verbs
// without precision or width or argument indices.
if 'a' <= c && c <= 'z' && p.ArgNum < len(p.Args) {
if c == 'v' {
// Go syntax
p.SharpV = p.Sharp
p.Sharp = false
// Struct-field syntax
p.PlusV = p.Plus
p.Plus = false
}
p.Verb = rune(c)
p.ArgNum++
p.endPos = i + 1
return true
}
// Format is more complex than simple flags and a verb or is malformed.
break simpleFormat
}
}
// Do we have an explicit argument index?
i, afterIndex = p.updateArgNumber(format, i)
// Do we have width?
if i < end && format[i] == '*' {
i++
p.Width, p.WidthPresent = p.intFromArg()
if !p.WidthPresent {
p.Status = StatusBadWidthSubstitution
}
// We have a negative width, so take its value and ensure
// that the minus flag is set
if p.Width < 0 {
p.Width = -p.Width
p.Minus = true
p.Zero = false // Do not pad with zeros to the right.
}
afterIndex = false
} else {
p.Width, p.WidthPresent, i = parsenum(format, i, end)
if afterIndex && p.WidthPresent { // "%[3]2d"
p.goodArgNum = false
}
}
// Do we have precision?
if i+1 < end && format[i] == '.' {
i++
if afterIndex { // "%[3].2d"
p.goodArgNum = false
}
i, afterIndex = p.updateArgNumber(format, i)
if i < end && format[i] == '*' {
i++
p.Prec, p.PrecPresent = p.intFromArg()
// Negative precision arguments don't make sense
if p.Prec < 0 {
p.Prec = 0
p.PrecPresent = false
}
if !p.PrecPresent {
p.Status = StatusBadPrecSubstitution
}
afterIndex = false
} else {
p.Prec, p.PrecPresent, i = parsenum(format, i, end)
if !p.PrecPresent {
p.Prec = 0
p.PrecPresent = true
}
}
}
if !afterIndex {
i, afterIndex = p.updateArgNumber(format, i)
}
p.HasIndex = afterIndex
if i >= end {
p.endPos = i
p.Status = StatusNoVerb
return true
}
verb, w := utf8.DecodeRuneInString(format[i:])
p.endPos = i + w
p.Verb = verb
switch {
case verb == '%': // Percent does not absorb operands and ignores f.wid and f.prec.
p.startPos = p.endPos - 1
p.Status = StatusText
case !p.goodArgNum:
p.Status = StatusBadArgNum
case p.ArgNum >= len(p.Args): // No argument left over to print for the current verb.
p.Status = StatusMissingArg
p.ArgNum++
case verb == 'v':
// Go syntax
p.SharpV = p.Sharp
p.Sharp = false
// Struct-field syntax
p.PlusV = p.Plus
p.Plus = false
fallthrough
default:
p.ArgNum++
}
return true
}
// intFromArg gets the ArgNumth element of Args. On return, isInt reports
// whether the argument has integer type.
func (p *Parser) intFromArg() (num int, isInt bool) {
if p.ArgNum < len(p.Args) {
arg := p.Args[p.ArgNum]
num, isInt = arg.(int) // Almost always OK.
if !isInt {
// Work harder.
switch v := reflect.ValueOf(arg); v.Kind() {
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
n := v.Int()
if int64(int(n)) == n {
num = int(n)
isInt = true
}
case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
n := v.Uint()
if int64(n) >= 0 && uint64(int(n)) == n {
num = int(n)
isInt = true
}
default:
// Already 0, false.
}
}
p.ArgNum++
if tooLarge(num) {
num = 0
isInt = false
}
}
return
}
// parseArgNumber returns the value of the bracketed number, minus 1
// (explicit argument numbers are one-indexed but we want zero-indexed).
// The opening bracket is known to be present at format[0].
// The returned values are the index, the number of bytes to consume
// up to the closing paren, if present, and whether the number parsed
// ok. The bytes to consume will be 1 if no closing paren is present.
func parseArgNumber(format string) (index int, wid int, ok bool) {
// There must be at least 3 bytes: [n].
if len(format) < 3 {
return 0, 1, false
}
// Find closing bracket.
for i := 1; i < len(format); i++ {
if format[i] == ']' {
width, ok, newi := parsenum(format, 1, i)
if !ok || newi != i {
return 0, i + 1, false
}
return width - 1, i + 1, true // arg numbers are one-indexed and skip paren.
}
}
return 0, 1, false
}
// updateArgNumber returns the next argument to evaluate, which is either the value of the passed-in
// argNum or the value of the bracketed integer that begins format[i:]. It also returns
// the new value of i, that is, the index of the next byte of the format to process.
func (p *Parser) updateArgNumber(format string, i int) (newi int, found bool) {
if len(format) <= i || format[i] != '[' {
return i, false
}
p.Reordered = true
index, wid, ok := parseArgNumber(format[i:])
if ok && 0 <= index && index < len(p.Args) {
p.ArgNum = index
return i + wid, true
}
p.goodArgNum = false
return i + wid, ok
}
// tooLarge reports whether the magnitude of the integer is
// too large to be used as a formatting width or precision.
func tooLarge(x int) bool {
const max int = 1e6
return x > max || x < -max
}
// parsenum converts ASCII to integer. num is 0 (and isnum is false) if no number present.
func parsenum(s string, start, end int) (num int, isnum bool, newi int) {
if start >= end {
return 0, false, end
}
for newi = start; newi < end && '0' <= s[newi] && s[newi] <= '9'; newi++ {
if tooLarge(num) {
return 0, false, end // Overflow; crazy long number most likely.
}
num = num*10 + int(s[newi]-'0')
isnum = true
}
return
}

27
vendor/golang.org/x/text/internal/gen/LICENSE generated vendored
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@ -1,27 +0,0 @@
Copyright (c) 2009 The Go Authors. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above
copyright notice, this list of conditions and the following disclaimer
in the documentation and/or other materials provided with the
distribution.
* Neither the name of Google Inc. nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

226
vendor/golang.org/x/text/internal/gen/bitfield/bitfield.go generated vendored
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@ -1,226 +0,0 @@
// Copyright 2018 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Package bitfield converts annotated structs into integer values.
//
// Any field that is marked with a bitfield tag is compacted. The tag value has
// two parts. The part before the comma determines the method name for a
// generated type. If left blank the name of the field is used.
// The part after the comma determines the number of bits to use for the
// representation.
package bitfield
import (
"bytes"
"fmt"
"io"
"reflect"
"strconv"
"strings"
)
// Config determines settings for packing and generation. If a Config is used,
// the same Config should be used for packing and generation.
type Config struct {
// NumBits fixes the maximum allowed bits for the integer representation.
// If NumBits is not 8, 16, 32, or 64, the actual underlying integer size
// will be the next largest available.
NumBits uint
// If Package is set, code generation will write a package clause.
Package string
// TypeName is the name for the generated type. By default it is the name
// of the type of the value passed to Gen.
TypeName string
}
var nullConfig = &Config{}
// Pack packs annotated bit ranges of struct x in an integer.
//
// Only fields that have a "bitfield" tag are compacted.
func Pack(x interface{}, c *Config) (packed uint64, err error) {
packed, _, err = pack(x, c)
return
}
func pack(x interface{}, c *Config) (packed uint64, nBit uint, err error) {
if c == nil {
c = nullConfig
}
nBits := c.NumBits
v := reflect.ValueOf(x)
v = reflect.Indirect(v)
t := v.Type()
pos := 64 - nBits
if nBits == 0 {
pos = 0
}
for i := 0; i < v.NumField(); i++ {
v := v.Field(i)
field := t.Field(i)
f, err := parseField(field)
if err != nil {
return 0, 0, err
}
if f.nBits == 0 {
continue
}
value := uint64(0)
switch v.Kind() {
case reflect.Bool:
if v.Bool() {
value = 1
}
case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
value = v.Uint()
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
x := v.Int()
if x < 0 {
return 0, 0, fmt.Errorf("bitfield: negative value for field %q not allowed", field.Name)
}
value = uint64(x)
}
if value > (1<<f.nBits)-1 {
return 0, 0, fmt.Errorf("bitfield: value %#x of field %q does not fit in %d bits", value, field.Name, f.nBits)
}
shift := 64 - pos - f.nBits
if pos += f.nBits; pos > 64 {
return 0, 0, fmt.Errorf("bitfield: no more bits left for field %q", field.Name)
}
packed |= value << shift
}
if nBits == 0 {
nBits = posToBits(pos)
packed >>= (64 - nBits)
}
return packed, nBits, nil
}
type field struct {
name string
value uint64
nBits uint
}
// parseField parses a tag of the form [<name>][:<nBits>][,<pos>[..<end>]]
func parseField(field reflect.StructField) (f field, err error) {
s, ok := field.Tag.Lookup("bitfield")
if !ok {
return f, nil
}
switch field.Type.Kind() {
case reflect.Bool:
case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
default:
return f, fmt.Errorf("bitfield: field %q is not an integer or bool type", field.Name)
}
bits := s
f.name = ""
if i := strings.IndexByte(s, ','); i >= 0 {
bits = s[:i]
f.name = s[i+1:]
}
if bits != "" {
nBits, err := strconv.ParseUint(bits, 10, 8)
if err != nil {
return f, fmt.Errorf("bitfield: invalid bit size for field %q: %v", field.Name, err)
}
f.nBits = uint(nBits)
}
if f.nBits == 0 {
if field.Type.Kind() == reflect.Bool {
f.nBits = 1
} else {
f.nBits = uint(field.Type.Bits())
}
}
if f.name == "" {
f.name = field.Name
}
return f, err
}
func posToBits(pos uint) (bits uint) {
switch {
case pos <= 8:
bits = 8
case pos <= 16:
bits = 16
case pos <= 32:
bits = 32
case pos <= 64:
bits = 64
default:
panic("unreachable")
}
return bits
}
// Gen generates code for unpacking integers created with Pack.
func Gen(w io.Writer, x interface{}, c *Config) error {
if c == nil {
c = nullConfig
}
_, nBits, err := pack(x, c)
if err != nil {
return err
}
t := reflect.TypeOf(x)
if t.Kind() == reflect.Ptr {
t = t.Elem()
}
if c.TypeName == "" {
c.TypeName = t.Name()
}
firstChar := []rune(c.TypeName)[0]
buf := &bytes.Buffer{}
print := func(w io.Writer, format string, args ...interface{}) {
if _, e := fmt.Fprintf(w, format+"\n", args...); e != nil && err == nil {
err = fmt.Errorf("bitfield: write failed: %v", err)
}
}
pos := uint(0)
for i := 0; i < t.NumField(); i++ {
field := t.Field(i)
f, _ := parseField(field)
if f.nBits == 0 {
continue
}
shift := nBits - pos - f.nBits
pos += f.nBits
retType := field.Type.Name()
print(buf, "\nfunc (%c %s) %s() %s {", firstChar, c.TypeName, f.name, retType)
if field.Type.Kind() == reflect.Bool {
print(buf, "\tconst bit = 1 << %d", shift)
print(buf, "\treturn %c&bit == bit", firstChar)
} else {
print(buf, "\treturn %s((%c >> %d) & %#x)", retType, firstChar, shift, (1<<f.nBits)-1)
}
print(buf, "}")
}
if c.Package != "" {
print(w, "// Code generated by golang.org/x/text/internal/gen/bitfield. DO NOT EDIT.\n")
print(w, "package %s\n", c.Package)
}
bits := posToBits(pos)
print(w, "type %s uint%d", c.TypeName, bits)
if _, err := io.Copy(w, buf); err != nil {
return fmt.Errorf("bitfield: write failed: %v", err)
}
return nil
}

371
vendor/golang.org/x/text/internal/gen/code.go generated vendored
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@ -1,371 +0,0 @@
// Copyright 2015 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package gen
import (
"bytes"
"encoding/gob"
"fmt"
"hash"
"hash/fnv"
"io"
"log"
"os"
"reflect"
"strings"
"unicode"
"unicode/utf8"
)
// This file contains utilities for generating code.
// TODO: other write methods like:
// - slices, maps, types, etc.
// CodeWriter is a utility for writing structured code. It computes the content
// hash and size of written content. It ensures there are newlines between
// written code blocks.
type CodeWriter struct {
buf bytes.Buffer
Size int
Hash hash.Hash32 // content hash
gob *gob.Encoder
// For comments we skip the usual one-line separator if they are followed by
// a code block.
skipSep bool
}
func (w *CodeWriter) Write(p []byte) (n int, err error) {
return w.buf.Write(p)
}
// NewCodeWriter returns a new CodeWriter.
func NewCodeWriter() *CodeWriter {
h := fnv.New32()
return &CodeWriter{Hash: h, gob: gob.NewEncoder(h)}
}
// WriteGoFile appends the buffer with the total size of all created structures
// and writes it as a Go file to the the given file with the given package name.
func (w *CodeWriter) WriteGoFile(filename, pkg string) {
f, err := os.Create(filename)
if err != nil {
log.Fatalf("Could not create file %s: %v", filename, err)
}
defer f.Close()
if _, err = w.WriteGo(f, pkg, ""); err != nil {
log.Fatalf("Error writing file %s: %v", filename, err)
}
}
// WriteVersionedGoFile appends the buffer with the total size of all created
// structures and writes it as a Go file to the the given file with the given
// package name and build tags for the current Unicode version,
func (w *CodeWriter) WriteVersionedGoFile(filename, pkg string) {
tags := buildTags()
if tags != "" {
filename = insertVersion(filename, UnicodeVersion())
}
f, err := os.Create(filename)
if err != nil {
log.Fatalf("Could not create file %s: %v", filename, err)
}
defer f.Close()
if _, err = w.WriteGo(f, pkg, tags); err != nil {
log.Fatalf("Error writing file %s: %v", filename, err)
}
}
// WriteGo appends the buffer with the total size of all created structures and
// writes it as a Go file to the the given writer with the given package name.
func (w *CodeWriter) WriteGo(out io.Writer, pkg, tags string) (n int, err error) {
sz := w.Size
w.WriteComment("Total table size %d bytes (%dKiB); checksum: %X\n", sz, sz/1024, w.Hash.Sum32())
defer w.buf.Reset()
return WriteGo(out, pkg, tags, w.buf.Bytes())
}
func (w *CodeWriter) printf(f string, x ...interface{}) {
fmt.Fprintf(w, f, x...)
}
func (w *CodeWriter) insertSep() {
if w.skipSep {
w.skipSep = false
return
}
// Use at least two newlines to ensure a blank space between the previous
// block. WriteGoFile will remove extraneous newlines.
w.printf("\n\n")
}
// WriteComment writes a comment block. All line starts are prefixed with "//".
// Initial empty lines are gobbled. The indentation for the first line is
// stripped from consecutive lines.
func (w *CodeWriter) WriteComment(comment string, args ...interface{}) {
s := fmt.Sprintf(comment, args...)
s = strings.Trim(s, "\n")
// Use at least two newlines to ensure a blank space between the previous
// block. WriteGoFile will remove extraneous newlines.
w.printf("\n\n// ")
w.skipSep = true
// strip first indent level.
sep := "\n"
for ; len(s) > 0 && (s[0] == '\t' || s[0] == ' '); s = s[1:] {
sep += s[:1]
}
strings.NewReplacer(sep, "\n// ", "\n", "\n// ").WriteString(w, s)
w.printf("\n")
}
func (w *CodeWriter) writeSizeInfo(size int) {
w.printf("// Size: %d bytes\n", size)
}
// WriteConst writes a constant of the given name and value.
func (w *CodeWriter) WriteConst(name string, x interface{}) {
w.insertSep()
v := reflect.ValueOf(x)
switch v.Type().Kind() {
case reflect.String:
w.printf("const %s %s = ", name, typeName(x))
w.WriteString(v.String())
w.printf("\n")
default:
w.printf("const %s = %#v\n", name, x)
}
}
// WriteVar writes a variable of the given name and value.
func (w *CodeWriter) WriteVar(name string, x interface{}) {
w.insertSep()
v := reflect.ValueOf(x)
oldSize := w.Size
sz := int(v.Type().Size())
w.Size += sz
switch v.Type().Kind() {
case reflect.String:
w.printf("var %s %s = ", name, typeName(x))
w.WriteString(v.String())
case reflect.Struct:
w.gob.Encode(x)
fallthrough
case reflect.Slice, reflect.Array:
w.printf("var %s = ", name)
w.writeValue(v)
w.writeSizeInfo(w.Size - oldSize)
default:
w.printf("var %s %s = ", name, typeName(x))
w.gob.Encode(x)
w.writeValue(v)
w.writeSizeInfo(w.Size - oldSize)
}
w.printf("\n")
}
func (w *CodeWriter) writeValue(v reflect.Value) {
x := v.Interface()
switch v.Kind() {
case reflect.String:
w.WriteString(v.String())
case reflect.Array:
// Don't double count: callers of WriteArray count on the size being
// added, so we need to discount it here.
w.Size -= int(v.Type().Size())
w.writeSlice(x, true)
case reflect.Slice:
w.writeSlice(x, false)
case reflect.Struct:
w.printf("%s{\n", typeName(v.Interface()))
t := v.Type()
for i := 0; i < v.NumField(); i++ {
w.printf("%s: ", t.Field(i).Name)
w.writeValue(v.Field(i))
w.printf(",\n")
}
w.printf("}")
default:
w.printf("%#v", x)
}
}
// WriteString writes a string literal.
func (w *CodeWriter) WriteString(s string) {
io.WriteString(w.Hash, s) // content hash
w.Size += len(s)
const maxInline = 40
if len(s) <= maxInline {
w.printf("%q", s)
return
}
// We will render the string as a multi-line string.
const maxWidth = 80 - 4 - len(`"`) - len(`" +`)
// When starting on its own line, go fmt indents line 2+ an extra level.
n, max := maxWidth, maxWidth-4
// As per https://golang.org/issue/18078, the compiler has trouble
// compiling the concatenation of many strings, s0 + s1 + s2 + ... + sN,
// for large N. We insert redundant, explicit parentheses to work around
// that, lowering the N at any given step: (s0 + s1 + ... + s63) + (s64 +
// ... + s127) + etc + (etc + ... + sN).
explicitParens, extraComment := len(s) > 128*1024, ""
if explicitParens {
w.printf(`(`)
extraComment = "; the redundant, explicit parens are for https://golang.org/issue/18078"
}
// Print "" +\n, if a string does not start on its own line.
b := w.buf.Bytes()
if p := len(bytes.TrimRight(b, " \t")); p > 0 && b[p-1] != '\n' {
w.printf("\"\" + // Size: %d bytes%s\n", len(s), extraComment)
n, max = maxWidth, maxWidth
}
w.printf(`"`)
for sz, p, nLines := 0, 0, 0; p < len(s); {
var r rune
r, sz = utf8.DecodeRuneInString(s[p:])
out := s[p : p+sz]
chars := 1
if !unicode.IsPrint(r) || r == utf8.RuneError || r == '"' {
switch sz {
case 1:
out = fmt.Sprintf("\\x%02x", s[p])
case 2, 3:
out = fmt.Sprintf("\\u%04x", r)
case 4:
out = fmt.Sprintf("\\U%08x", r)
}
chars = len(out)
} else if r == '\\' {
out = "\\" + string(r)
chars = 2
}
if n -= chars; n < 0 {
nLines++
if explicitParens && nLines&63 == 63 {
w.printf("\") + (\"")
}
w.printf("\" +\n\"")
n = max - len(out)
}
w.printf("%s", out)
p += sz
}
w.printf(`"`)
if explicitParens {
w.printf(`)`)
}
}
// WriteSlice writes a slice value.
func (w *CodeWriter) WriteSlice(x interface{}) {
w.writeSlice(x, false)
}
// WriteArray writes an array value.
func (w *CodeWriter) WriteArray(x interface{}) {
w.writeSlice(x, true)
}
func (w *CodeWriter) writeSlice(x interface{}, isArray bool) {
v := reflect.ValueOf(x)
w.gob.Encode(v.Len())
w.Size += v.Len() * int(v.Type().Elem().Size())
name := typeName(x)
if isArray {
name = fmt.Sprintf("[%d]%s", v.Len(), name[strings.Index(name, "]")+1:])
}
if isArray {
w.printf("%s{\n", name)
} else {
w.printf("%s{ // %d elements\n", name, v.Len())
}
switch kind := v.Type().Elem().Kind(); kind {
case reflect.String:
for _, s := range x.([]string) {
w.WriteString(s)
w.printf(",\n")
}
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64,
reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
// nLine and nBlock are the number of elements per line and block.
nLine, nBlock, format := 8, 64, "%d,"
switch kind {
case reflect.Uint8:
format = "%#02x,"
case reflect.Uint16:
format = "%#04x,"
case reflect.Uint32:
nLine, nBlock, format = 4, 32, "%#08x,"
case reflect.Uint, reflect.Uint64:
nLine, nBlock, format = 4, 32, "%#016x,"
case reflect.Int8:
nLine = 16
}
n := nLine
for i := 0; i < v.Len(); i++ {
if i%nBlock == 0 && v.Len() > nBlock {
w.printf("// Entry %X - %X\n", i, i+nBlock-1)
}
x := v.Index(i).Interface()
w.gob.Encode(x)
w.printf(format, x)
if n--; n == 0 {
n = nLine
w.printf("\n")
}
}
w.printf("\n")
case reflect.Struct:
zero := reflect.Zero(v.Type().Elem()).Interface()
for i := 0; i < v.Len(); i++ {
x := v.Index(i).Interface()
w.gob.EncodeValue(v)
if !reflect.DeepEqual(zero, x) {
line := fmt.Sprintf("%#v,\n", x)
line = line[strings.IndexByte(line, '{'):]
w.printf("%d: ", i)
w.printf(line)
}
}
case reflect.Array:
for i := 0; i < v.Len(); i++ {
w.printf("%d: %#v,\n", i, v.Index(i).Interface())
}
default:
panic("gen: slice elem type not supported")
}
w.printf("}")
}
// WriteType writes a definition of the type of the given value and returns the
// type name.
func (w *CodeWriter) WriteType(x interface{}) string {
t := reflect.TypeOf(x)
w.printf("type %s struct {\n", t.Name())
for i := 0; i < t.NumField(); i++ {
w.printf("\t%s %s\n", t.Field(i).Name, t.Field(i).Type)
}
w.printf("}\n")
return t.Name()
}
// typeName returns the name of the go type of x.
func typeName(x interface{}) string {
t := reflect.ValueOf(x).Type()
return strings.Replace(fmt.Sprint(t), "main.", "", 1)
}

333
vendor/golang.org/x/text/internal/gen/gen.go generated vendored
View File

@ -1,333 +0,0 @@
// Copyright 2015 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Package gen contains common code for the various code generation tools in the
// text repository. Its usage ensures consistency between tools.
//
// This package defines command line flags that are common to most generation
// tools. The flags allow for specifying specific Unicode and CLDR versions
// in the public Unicode data repository (http://www.unicode.org/Public).
//
// A local Unicode data mirror can be set through the flag -local or the
// environment variable UNICODE_DIR. The former takes precedence. The local
// directory should follow the same structure as the public repository.
//
// IANA data can also optionally be mirrored by putting it in the iana directory
// rooted at the top of the local mirror. Beware, though, that IANA data is not
// versioned. So it is up to the developer to use the right version.
package gen // import "golang.org/x/text/internal/gen"
import (
"bytes"
"flag"
"fmt"
"go/build"
"go/format"
"io"
"io/ioutil"
"log"
"net/http"
"os"
"path"
"path/filepath"
"strings"
"sync"
"unicode"
"golang.org/x/text/unicode/cldr"
)
var (
url = flag.String("url",
"http://www.unicode.org/Public",
"URL of Unicode database directory")
iana = flag.String("iana",
"http://www.iana.org",
"URL of the IANA repository")
unicodeVersion = flag.String("unicode",
getEnv("UNICODE_VERSION", unicode.Version),
"unicode version to use")
cldrVersion = flag.String("cldr",
getEnv("CLDR_VERSION", cldr.Version),
"cldr version to use")
)
func getEnv(name, def string) string {
if v := os.Getenv(name); v != "" {
return v
}
return def
}
// Init performs common initialization for a gen command. It parses the flags
// and sets up the standard logging parameters.
func Init() {
log.SetPrefix("")
log.SetFlags(log.Lshortfile)
flag.Parse()
}
const header = `// Code generated by running "go generate" in golang.org/x/text. DO NOT EDIT.
`
// UnicodeVersion reports the requested Unicode version.
func UnicodeVersion() string {
return *unicodeVersion
}
// CLDRVersion reports the requested CLDR version.
func CLDRVersion() string {
return *cldrVersion
}
var tags = []struct{ version, buildTags string }{
{"10.0.0", "go1.10"},
{"", "!go1.10"},
}
// buildTags reports the build tags used for the current Unicode version.
func buildTags() string {
v := UnicodeVersion()
for _, x := range tags {
// We should do a numeric comparison, but including the collate package
// would create an import cycle. We approximate it by assuming that
// longer version strings are later.
if len(x.version) <= len(v) {
return x.buildTags
}
if len(x.version) == len(v) && x.version <= v {
return x.buildTags
}
}
return tags[0].buildTags
}
// IsLocal reports whether data files are available locally.
func IsLocal() bool {
dir, err := localReadmeFile()
if err != nil {
return false
}
if _, err = os.Stat(dir); err != nil {
return false
}
return true
}
// OpenUCDFile opens the requested UCD file. The file is specified relative to
// the public Unicode root directory. It will call log.Fatal if there are any
// errors.
func OpenUCDFile(file string) io.ReadCloser {
return openUnicode(path.Join(*unicodeVersion, "ucd", file))
}
// OpenCLDRCoreZip opens the CLDR core zip file. It will call log.Fatal if there
// are any errors.
func OpenCLDRCoreZip() io.ReadCloser {
return OpenUnicodeFile("cldr", *cldrVersion, "core.zip")
}
// OpenUnicodeFile opens the requested file of the requested category from the
// root of the Unicode data archive. The file is specified relative to the
// public Unicode root directory. If version is "", it will use the default
// Unicode version. It will call log.Fatal if there are any errors.
func OpenUnicodeFile(category, version, file string) io.ReadCloser {
if version == "" {
version = UnicodeVersion()
}
return openUnicode(path.Join(category, version, file))
}
// OpenIANAFile opens the requested IANA file. The file is specified relative
// to the IANA root, which is typically either http://www.iana.org or the
// iana directory in the local mirror. It will call log.Fatal if there are any
// errors.
func OpenIANAFile(path string) io.ReadCloser {
return Open(*iana, "iana", path)
}
var (
dirMutex sync.Mutex
localDir string
)
const permissions = 0755
func localReadmeFile() (string, error) {
p, err := build.Import("golang.org/x/text", "", build.FindOnly)
if err != nil {
return "", fmt.Errorf("Could not locate package: %v", err)
}
return filepath.Join(p.Dir, "DATA", "README"), nil
}
func getLocalDir() string {
dirMutex.Lock()
defer dirMutex.Unlock()
readme, err := localReadmeFile()
if err != nil {
log.Fatal(err)
}
dir := filepath.Dir(readme)
if _, err := os.Stat(readme); err != nil {
if err := os.MkdirAll(dir, permissions); err != nil {
log.Fatalf("Could not create directory: %v", err)
}
ioutil.WriteFile(readme, []byte(readmeTxt), permissions)
}
return dir
}
const readmeTxt = `Generated by golang.org/x/text/internal/gen. DO NOT EDIT.
This directory contains downloaded files used to generate the various tables
in the golang.org/x/text subrepo.
Note that the language subtag repo (iana/assignments/language-subtag-registry)
and all other times in the iana subdirectory are not versioned and will need
to be periodically manually updated. The easiest way to do this is to remove
the entire iana directory. This is mostly of concern when updating the language
package.
`
// Open opens subdir/path if a local directory is specified and the file exists,
// where subdir is a directory relative to the local root, or fetches it from
// urlRoot/path otherwise. It will call log.Fatal if there are any errors.
func Open(urlRoot, subdir, path string) io.ReadCloser {
file := filepath.Join(getLocalDir(), subdir, filepath.FromSlash(path))
return open(file, urlRoot, path)
}
func openUnicode(path string) io.ReadCloser {
file := filepath.Join(getLocalDir(), filepath.FromSlash(path))
return open(file, *url, path)
}
// TODO: automatically periodically update non-versioned files.
func open(file, urlRoot, path string) io.ReadCloser {
if f, err := os.Open(file); err == nil {
return f
}
r := get(urlRoot, path)
defer r.Close()
b, err := ioutil.ReadAll(r)
if err != nil {
log.Fatalf("Could not download file: %v", err)
}
os.MkdirAll(filepath.Dir(file), permissions)
if err := ioutil.WriteFile(file, b, permissions); err != nil {
log.Fatalf("Could not create file: %v", err)
}
return ioutil.NopCloser(bytes.NewReader(b))
}
func get(root, path string) io.ReadCloser {
url := root + "/" + path
fmt.Printf("Fetching %s...", url)
defer fmt.Println(" done.")
resp, err := http.Get(url)
if err != nil {
log.Fatalf("HTTP GET: %v", err)
}
if resp.StatusCode != 200 {
log.Fatalf("Bad GET status for %q: %q", url, resp.Status)
}
return resp.Body
}
// TODO: use Write*Version in all applicable packages.
// WriteUnicodeVersion writes a constant for the Unicode version from which the
// tables are generated.
func WriteUnicodeVersion(w io.Writer) {
fmt.Fprintf(w, "// UnicodeVersion is the Unicode version from which the tables in this package are derived.\n")
fmt.Fprintf(w, "const UnicodeVersion = %q\n\n", UnicodeVersion())
}
// WriteCLDRVersion writes a constant for the CLDR version from which the
// tables are generated.
func WriteCLDRVersion(w io.Writer) {
fmt.Fprintf(w, "// CLDRVersion is the CLDR version from which the tables in this package are derived.\n")
fmt.Fprintf(w, "const CLDRVersion = %q\n\n", CLDRVersion())
}
// WriteGoFile prepends a standard file comment and package statement to the
// given bytes, applies gofmt, and writes them to a file with the given name.
// It will call log.Fatal if there are any errors.
func WriteGoFile(filename, pkg string, b []byte) {
w, err := os.Create(filename)
if err != nil {
log.Fatalf("Could not create file %s: %v", filename, err)
}
defer w.Close()
if _, err = WriteGo(w, pkg, "", b); err != nil {
log.Fatalf("Error writing file %s: %v", filename, err)
}
}
func insertVersion(filename, version string) string {
suffix := ".go"
if strings.HasSuffix(filename, "_test.go") {
suffix = "_test.go"
}
return fmt.Sprint(filename[:len(filename)-len(suffix)], version, suffix)
}
// WriteVersionedGoFile prepends a standard file comment, adds build tags to
// version the file for the current Unicode version, and package statement to
// the given bytes, applies gofmt, and writes them to a file with the given
// name. It will call log.Fatal if there are any errors.
func WriteVersionedGoFile(filename, pkg string, b []byte) {
tags := buildTags()
if tags != "" {
filename = insertVersion(filename, UnicodeVersion())
}
w, err := os.Create(filename)
if err != nil {
log.Fatalf("Could not create file %s: %v", filename, err)
}
defer w.Close()
if _, err = WriteGo(w, pkg, tags, b); err != nil {
log.Fatalf("Error writing file %s: %v", filename, err)
}
}
// WriteGo prepends a standard file comment and package statement to the given
// bytes, applies gofmt, and writes them to w.
func WriteGo(w io.Writer, pkg, tags string, b []byte) (n int, err error) {
src := []byte(header)
if tags != "" {
src = append(src, fmt.Sprintf("// +build %s\n\n", tags)...)
}
src = append(src, fmt.Sprintf("package %s\n\n", pkg)...)
src = append(src, b...)
formatted, err := format.Source(src)
if err != nil {
// Print the generated code even in case of an error so that the
// returned error can be meaningfully interpreted.
n, _ = w.Write(src)
return n, err
}
return w.Write(formatted)
}
// Repackage rewrites a Go file from belonging to package main to belonging to
// the given package.
func Repackage(inFile, outFile, pkg string) {
src, err := ioutil.ReadFile(inFile)
if err != nil {
log.Fatalf("reading %s: %v", inFile, err)
}
const toDelete = "package main\n\n"
i := bytes.Index(src, []byte(toDelete))
if i < 0 {
log.Fatalf("Could not find %q in %s.", toDelete, inFile)
}
w := &bytes.Buffer{}
w.Write(src[i+len(toDelete):])
WriteGoFile(outFile, pkg, w.Bytes())
}

27
vendor/golang.org/x/text/internal/language/LICENSE generated vendored
View File

@ -1,27 +0,0 @@
Copyright (c) 2009 The Go Authors. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above
copyright notice, this list of conditions and the following disclaimer
in the documentation and/or other materials provided with the
distribution.
* Neither the name of Google Inc. nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

16
vendor/golang.org/x/text/internal/language/common.go generated vendored
View File

@ -1,16 +0,0 @@
// Code generated by running "go generate" in golang.org/x/text. DO NOT EDIT.
package language
// This file contains code common to the maketables.go and the package code.
// AliasType is the type of an alias in AliasMap.
type AliasType int8
const (
Deprecated AliasType = iota
Macro
Legacy
AliasTypeUnknown AliasType = -1
)

29
vendor/golang.org/x/text/internal/language/compact.go generated vendored
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@ -1,29 +0,0 @@
// Copyright 2018 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package language
// CompactCoreInfo is a compact integer with the three core tags encoded.
type CompactCoreInfo uint32
// GetCompactCore generates a uint32 value that is guaranteed to be unique for
// different language, region, and script values.
func GetCompactCore(t Tag) (cci CompactCoreInfo, ok bool) {
if t.LangID > langNoIndexOffset {
return 0, false
}
cci |= CompactCoreInfo(t.LangID) << (8 + 12)
cci |= CompactCoreInfo(t.ScriptID) << 12
cci |= CompactCoreInfo(t.RegionID)
return cci, true
}
// Tag generates a tag from c.
func (c CompactCoreInfo) Tag() Tag {
return Tag{
LangID: Language(c >> 20),
RegionID: Region(c & 0x3ff),
ScriptID: Script(c>>12) & 0xff,
}
}

61
vendor/golang.org/x/text/internal/language/compact/compact.go generated vendored
View File

@ -1,61 +0,0 @@
// Copyright 2018 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Package compact defines a compact representation of language tags.
//
// Common language tags (at least all for which locale information is defined
// in CLDR) are assigned a unique index. Each Tag is associated with such an
// ID for selecting language-related resources (such as translations) as well
// as one for selecting regional defaults (currency, number formatting, etc.)
//
// It may want to export this functionality at some point, but at this point
// this is only available for use within x/text.
package compact // import "golang.org/x/text/internal/language/compact"
import (
"sort"
"strings"
"golang.org/x/text/internal/language"
)
// ID is an integer identifying a single tag.
type ID uint16
func getCoreIndex(t language.Tag) (id ID, ok bool) {
cci, ok := language.GetCompactCore(t)
if !ok {
return 0, false
}
i := sort.Search(len(coreTags), func(i int) bool {
return cci <= coreTags[i]
})
if i == len(coreTags) || coreTags[i] != cci {
return 0, false
}
return ID(i), true
}
// Parent returns the ID of the parent or the root ID if id is already the root.
func (id ID) Parent() ID {
return parents[id]
}
// Tag converts id to an internal language Tag.
func (id ID) Tag() language.Tag {
if int(id) >= len(coreTags) {
return specialTags[int(id)-len(coreTags)]
}
return coreTags[id].Tag()
}
var specialTags []language.Tag
func init() {
tags := strings.Split(specialTagsStr, " ")
specialTags = make([]language.Tag, len(tags))
for i, t := range tags {
specialTags[i] = language.MustParse(t)
}
}

64
vendor/golang.org/x/text/internal/language/compact/gen.go generated vendored
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@ -1,64 +0,0 @@
// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build ignore
// Language tag table generator.
// Data read from the web.
package main
import (
"flag"
"fmt"
"log"
"golang.org/x/text/internal/gen"
"golang.org/x/text/unicode/cldr"
)
var (
test = flag.Bool("test",
false,
"test existing tables; can be used to compare web data with package data.")
outputFile = flag.String("output",
"tables.go",
"output file for generated tables")
)
func main() {
gen.Init()
w := gen.NewCodeWriter()
defer w.WriteGoFile("tables.go", "compact")
fmt.Fprintln(w, `import "golang.org/x/text/internal/language"`)
b := newBuilder(w)
gen.WriteCLDRVersion(w)
b.writeCompactIndex()
}
type builder struct {
w *gen.CodeWriter
data *cldr.CLDR
supp *cldr.SupplementalData
}
func newBuilder(w *gen.CodeWriter) *builder {
r := gen.OpenCLDRCoreZip()
defer r.Close()
d := &cldr.Decoder{}
data, err := d.DecodeZip(r)
if err != nil {
log.Fatal(err)
}
b := builder{
w: w,
data: data,
supp: data.Supplemental(),
}
return &b
}

113
vendor/golang.org/x/text/internal/language/compact/gen_index.go generated vendored
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@ -1,113 +0,0 @@
// Copyright 2015 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build ignore
package main
// This file generates derivative tables based on the language package itself.
import (
"fmt"
"log"
"sort"
"strings"
"golang.org/x/text/internal/language"
)
// Compact indices:
// Note -va-X variants only apply to localization variants.
// BCP variants only ever apply to language.
// The only ambiguity between tags is with regions.
func (b *builder) writeCompactIndex() {
// Collect all language tags for which we have any data in CLDR.
m := map[language.Tag]bool{}
for _, lang := range b.data.Locales() {
// We include all locales unconditionally to be consistent with en_US.
// We want en_US, even though it has no data associated with it.
// TODO: put any of the languages for which no data exists at the end
// of the index. This allows all components based on ICU to use that
// as the cutoff point.
// if x := data.RawLDML(lang); false ||
// x.LocaleDisplayNames != nil ||
// x.Characters != nil ||
// x.Delimiters != nil ||
// x.Measurement != nil ||
// x.Dates != nil ||
// x.Numbers != nil ||
// x.Units != nil ||
// x.ListPatterns != nil ||
// x.Collations != nil ||
// x.Segmentations != nil ||
// x.Rbnf != nil ||
// x.Annotations != nil ||
// x.Metadata != nil {
// TODO: support POSIX natively, albeit non-standard.
tag := language.Make(strings.Replace(lang, "_POSIX", "-u-va-posix", 1))
m[tag] = true
// }
}
// TODO: plural rules are also defined for the deprecated tags:
// iw mo sh tl
// Consider removing these as compact tags.
// Include locales for plural rules, which uses a different structure.
for _, plurals := range b.supp.Plurals {
for _, rules := range plurals.PluralRules {
for _, lang := range strings.Split(rules.Locales, " ") {
m[language.Make(lang)] = true
}
}
}
var coreTags []language.CompactCoreInfo
var special []string
for t := range m {
if x := t.Extensions(); len(x) != 0 && fmt.Sprint(x) != "[u-va-posix]" {
log.Fatalf("Unexpected extension %v in %v", x, t)
}
if len(t.Variants()) == 0 && len(t.Extensions()) == 0 {
cci, ok := language.GetCompactCore(t)
if !ok {
log.Fatalf("Locale for non-basic language %q", t)
}
coreTags = append(coreTags, cci)
} else {
special = append(special, t.String())
}
}
w := b.w
sort.Slice(coreTags, func(i, j int) bool { return coreTags[i] < coreTags[j] })
sort.Strings(special)
w.WriteComment(`
NumCompactTags is the number of common tags. The maximum tag is
NumCompactTags-1.`)
w.WriteConst("NumCompactTags", len(m))
fmt.Fprintln(w, "const (")
for i, t := range coreTags {
fmt.Fprintf(w, "%s ID = %d\n", ident(t.Tag().String()), i)
}
for i, t := range special {
fmt.Fprintf(w, "%s ID = %d\n", ident(t), i+len(coreTags))
}
fmt.Fprintln(w, ")")
w.WriteVar("coreTags", coreTags)
w.WriteConst("specialTagsStr", strings.Join(special, " "))
}
func ident(s string) string {
return strings.Replace(s, "-", "", -1) + "Index"
}

54
vendor/golang.org/x/text/internal/language/compact/gen_parents.go generated vendored
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@ -1,54 +0,0 @@
// Copyright 2018 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build ignore
package main
import (
"log"
"golang.org/x/text/internal/gen"
"golang.org/x/text/internal/language"
"golang.org/x/text/internal/language/compact"
"golang.org/x/text/unicode/cldr"
)
func main() {
r := gen.OpenCLDRCoreZip()
defer r.Close()
d := &cldr.Decoder{}
data, err := d.DecodeZip(r)
if err != nil {
log.Fatalf("DecodeZip: %v", err)
}
w := gen.NewCodeWriter()
defer w.WriteGoFile("parents.go", "compact")
// Create parents table.
type ID uint16
parents := make([]ID, compact.NumCompactTags)
for _, loc := range data.Locales() {
tag := language.MustParse(loc)
index, ok := compact.FromTag(tag)
if !ok {
continue
}
parentIndex := compact.ID(0) // und
for p := tag.Parent(); p != language.Und; p = p.Parent() {
if x, ok := compact.FromTag(p); ok {
parentIndex = x
break
}
}
parents[index] = ID(parentIndex)
}
w.WriteComment(`
parents maps a compact index of a tag to the compact index of the parent of
this tag.`)
w.WriteVar("parents", parents)
}

260
vendor/golang.org/x/text/internal/language/compact/language.go generated vendored
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@ -1,260 +0,0 @@
// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
//go:generate go run gen.go gen_index.go -output tables.go
//go:generate go run gen_parents.go
package compact
// TODO: Remove above NOTE after:
// - verifying that tables are dropped correctly (most notably matcher tables).
import (
"strings"
"golang.org/x/text/internal/language"
)
// Tag represents a BCP 47 language tag. It is used to specify an instance of a
// specific language or locale. All language tag values are guaranteed to be
// well-formed.
type Tag struct {
// NOTE: exported tags will become part of the public API.
language ID
locale ID
full fullTag // always a language.Tag for now.
}
const _und = 0
type fullTag interface {
IsRoot() bool
Parent() language.Tag
}
// Make a compact Tag from a fully specified internal language Tag.
func Make(t language.Tag) (tag Tag) {
if region := t.TypeForKey("rg"); len(region) == 6 && region[2:] == "zzzz" {
if r, err := language.ParseRegion(region[:2]); err == nil {
tFull := t
t, _ = t.SetTypeForKey("rg", "")
// TODO: should we not consider "va" for the language tag?
var exact1, exact2 bool
tag.language, exact1 = FromTag(t)
t.RegionID = r
tag.locale, exact2 = FromTag(t)
if !exact1 || !exact2 {
tag.full = tFull
}
return tag
}
}
lang, ok := FromTag(t)
tag.language = lang
tag.locale = lang
if !ok {
tag.full = t
}
return tag
}
// Tag returns an internal language Tag version of this tag.
func (t Tag) Tag() language.Tag {
if t.full != nil {
return t.full.(language.Tag)
}
tag := t.language.Tag()
if t.language != t.locale {
loc := t.locale.Tag()
tag, _ = tag.SetTypeForKey("rg", strings.ToLower(loc.RegionID.String())+"zzzz")
}
return tag
}
// IsCompact reports whether this tag is fully defined in terms of ID.
func (t *Tag) IsCompact() bool {
return t.full == nil
}
// MayHaveVariants reports whether a tag may have variants. If it returns false
// it is guaranteed the tag does not have variants.
func (t Tag) MayHaveVariants() bool {
return t.full != nil || int(t.language) >= len(coreTags)
}
// MayHaveExtensions reports whether a tag may have extensions. If it returns
// false it is guaranteed the tag does not have them.
func (t Tag) MayHaveExtensions() bool {
return t.full != nil ||
int(t.language) >= len(coreTags) ||
t.language != t.locale
}
// IsRoot returns true if t is equal to language "und".
func (t Tag) IsRoot() bool {
if t.full != nil {
return t.full.IsRoot()
}
return t.language == _und
}
// Parent returns the CLDR parent of t. In CLDR, missing fields in data for a
// specific language are substituted with fields from the parent language.
// The parent for a language may change for newer versions of CLDR.
func (t Tag) Parent() Tag {
if t.full != nil {
return Make(t.full.Parent())
}
if t.language != t.locale {
// Simulate stripping -u-rg-xxxxxx
return Tag{language: t.language, locale: t.language}
}
// TODO: use parent lookup table once cycle from internal package is
// removed. Probably by internalizing the table and declaring this fast
// enough.
// lang := compactID(internal.Parent(uint16(t.language)))
lang, _ := FromTag(t.language.Tag().Parent())
return Tag{language: lang, locale: lang}
}
// returns token t and the rest of the string.
func nextToken(s string) (t, tail string) {
p := strings.Index(s[1:], "-")
if p == -1 {
return s[1:], ""
}
p++
return s[1:p], s[p:]
}
// LanguageID returns an index, where 0 <= index < NumCompactTags, for tags
// for which data exists in the text repository.The index will change over time
// and should not be stored in persistent storage. If t does not match a compact
// index, exact will be false and the compact index will be returned for the
// first match after repeatedly taking the Parent of t.
func LanguageID(t Tag) (id ID, exact bool) {
return t.language, t.full == nil
}
// RegionalID returns the ID for the regional variant of this tag. This index is
// used to indicate region-specific overrides, such as default currency, default
// calendar and week data, default time cycle, and default measurement system
// and unit preferences.
//
// For instance, the tag en-GB-u-rg-uszzzz specifies British English with US
// settings for currency, number formatting, etc. The CompactIndex for this tag
// will be that for en-GB, while the RegionalID will be the one corresponding to
// en-US.
func RegionalID(t Tag) (id ID, exact bool) {
return t.locale, t.full == nil
}
// LanguageTag returns t stripped of regional variant indicators.
//
// At the moment this means it is stripped of a regional and variant subtag "rg"
// and "va" in the "u" extension.
func (t Tag) LanguageTag() Tag {
if t.full == nil {
return Tag{language: t.language, locale: t.language}
}
tt := t.Tag()
tt.SetTypeForKey("rg", "")
tt.SetTypeForKey("va", "")
return Make(tt)
}
// RegionalTag returns the regional variant of the tag.
//
// At the moment this means that the region is set from the regional subtag
// "rg" in the "u" extension.
func (t Tag) RegionalTag() Tag {
rt := Tag{language: t.locale, locale: t.locale}
if t.full == nil {
return rt
}
b := language.Builder{}
tag := t.Tag()
// tag, _ = tag.SetTypeForKey("rg", "")
b.SetTag(t.locale.Tag())
if v := tag.Variants(); v != "" {
for _, v := range strings.Split(v, "-") {
b.AddVariant(v)
}
}
for _, e := range tag.Extensions() {
b.AddExt(e)
}
return t
}
// FromTag reports closest matching ID for an internal language Tag.
func FromTag(t language.Tag) (id ID, exact bool) {
// TODO: perhaps give more frequent tags a lower index.
// TODO: we could make the indexes stable. This will excluded some
// possibilities for optimization, so don't do this quite yet.
exact = true
b, s, r := t.Raw()
if t.HasString() {
if t.IsPrivateUse() {
// We have no entries for user-defined tags.
return 0, false
}
hasExtra := false
if t.HasVariants() {
if t.HasExtensions() {
build := language.Builder{}
build.SetTag(language.Tag{LangID: b, ScriptID: s, RegionID: r})
build.AddVariant(t.Variants())
exact = false
t = build.Make()
}
hasExtra = true
} else if _, ok := t.Extension('u'); ok {
// TODO: va may mean something else. Consider not considering it.
// Strip all but the 'va' entry.
old := t
variant := t.TypeForKey("va")
t = language.Tag{LangID: b, ScriptID: s, RegionID: r}
if variant != "" {
t, _ = t.SetTypeForKey("va", variant)
hasExtra = true
}
exact = old == t
} else {
exact = false
}
if hasExtra {
// We have some variants.
for i, s := range specialTags {
if s == t {
return ID(i + len(coreTags)), exact
}
}
exact = false
}
}
if x, ok := getCoreIndex(t); ok {
return x, exact
}
exact = false
if r != 0 && s == 0 {
// Deal with cases where an extra script is inserted for the region.
t, _ := t.Maximize()
if x, ok := getCoreIndex(t); ok {
return x, exact
}
}
for t = t.Parent(); t != root; t = t.Parent() {
// No variants specified: just compare core components.
// The key has the form lllssrrr, where l, s, and r are nibbles for
// respectively the langID, scriptID, and regionID.
if x, ok := getCoreIndex(t); ok {
return x, exact
}
}
return 0, exact
}
var root = language.Tag{}

120
vendor/golang.org/x/text/internal/language/compact/parents.go generated vendored
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@ -1,120 +0,0 @@
// Code generated by running "go generate" in golang.org/x/text. DO NOT EDIT.
package compact
// parents maps a compact index of a tag to the compact index of the parent of
// this tag.
var parents = []ID{ // 775 elements
// Entry 0 - 3F
0x0000, 0x0000, 0x0001, 0x0001, 0x0000, 0x0004, 0x0000, 0x0006,
0x0000, 0x0008, 0x0000, 0x000a, 0x000a, 0x000a, 0x000a, 0x000a,
0x000a, 0x000a, 0x000a, 0x000a, 0x000a, 0x000a, 0x000a, 0x000a,
0x000a, 0x000a, 0x000a, 0x000a, 0x000a, 0x000a, 0x000a, 0x000a,
0x000a, 0x000a, 0x000a, 0x000a, 0x000a, 0x000a, 0x000a, 0x0000,
0x0000, 0x0028, 0x0000, 0x002a, 0x0000, 0x002c, 0x0000, 0x0000,
0x002f, 0x002e, 0x002e, 0x0000, 0x0033, 0x0000, 0x0035, 0x0000,
0x0037, 0x0000, 0x0039, 0x0000, 0x003b, 0x0000, 0x0000, 0x003e,
// Entry 40 - 7F
0x0000, 0x0040, 0x0040, 0x0000, 0x0043, 0x0043, 0x0000, 0x0046,
0x0000, 0x0048, 0x0000, 0x0000, 0x004b, 0x004a, 0x004a, 0x0000,
0x004f, 0x004f, 0x004f, 0x004f, 0x0000, 0x0054, 0x0054, 0x0000,
0x0057, 0x0000, 0x0059, 0x0000, 0x005b, 0x0000, 0x005d, 0x005d,
0x0000, 0x0060, 0x0000, 0x0062, 0x0000, 0x0064, 0x0000, 0x0066,
0x0066, 0x0000, 0x0069, 0x0000, 0x006b, 0x006b, 0x006b, 0x006b,
0x006b, 0x006b, 0x006b, 0x0000, 0x0073, 0x0000, 0x0075, 0x0000,
0x0077, 0x0000, 0x0000, 0x007a, 0x0000, 0x007c, 0x0000, 0x007e,
// Entry 80 - BF
0x0000, 0x0080, 0x0080, 0x0000, 0x0083, 0x0083, 0x0000, 0x0086,
0x0087, 0x0087, 0x0087, 0x0086, 0x0088, 0x0087, 0x0087, 0x0087,
0x0086, 0x0087, 0x0087, 0x0087, 0x0087, 0x0087, 0x0087, 0x0088,
0x0087, 0x0087, 0x0087, 0x0087, 0x0088, 0x0087, 0x0088, 0x0087,
0x0087, 0x0088, 0x0087, 0x0087, 0x0087, 0x0087, 0x0087, 0x0087,
0x0087, 0x0087, 0x0087, 0x0086, 0x0087, 0x0087, 0x0087, 0x0087,
0x0087, 0x0087, 0x0087, 0x0087, 0x0087, 0x0087, 0x0087, 0x0087,
0x0087, 0x0087, 0x0087, 0x0087, 0x0087, 0x0086, 0x0087, 0x0086,
// Entry C0 - FF
0x0087, 0x0087, 0x0087, 0x0087, 0x0087, 0x0087, 0x0087, 0x0087,
0x0088, 0x0087, 0x0087, 0x0087, 0x0087, 0x0087, 0x0087, 0x0087,
0x0086, 0x0087, 0x0087, 0x0087, 0x0087, 0x0087, 0x0088, 0x0087,
0x0087, 0x0088, 0x0087, 0x0087, 0x0087, 0x0087, 0x0087, 0x0087,
0x0087, 0x0087, 0x0087, 0x0087, 0x0087, 0x0086, 0x0086, 0x0087,
0x0087, 0x0086, 0x0087, 0x0087, 0x0087, 0x0087, 0x0087, 0x0000,
0x00ef, 0x0000, 0x00f1, 0x00f2, 0x00f2, 0x00f2, 0x00f2, 0x00f2,
0x00f2, 0x00f2, 0x00f2, 0x00f2, 0x00f1, 0x00f2, 0x00f1, 0x00f1,
// Entry 100 - 13F
0x00f2, 0x00f2, 0x00f1, 0x00f2, 0x00f2, 0x00f2, 0x00f2, 0x00f1,
0x00f2, 0x00f2, 0x00f2, 0x00f2, 0x00f2, 0x00f2, 0x0000, 0x010e,
0x0000, 0x0110, 0x0000, 0x0112, 0x0000, 0x0114, 0x0114, 0x0000,
0x0117, 0x0117, 0x0117, 0x0117, 0x0000, 0x011c, 0x0000, 0x011e,
0x0000, 0x0120, 0x0120, 0x0000, 0x0123, 0x0123, 0x0123, 0x0123,
0x0123, 0x0123, 0x0123, 0x0123, 0x0123, 0x0123, 0x0123, 0x0123,
0x0123, 0x0123, 0x0123, 0x0123, 0x0123, 0x0123, 0x0123, 0x0123,
0x0123, 0x0123, 0x0123, 0x0123, 0x0123, 0x0123, 0x0123, 0x0123,
// Entry 140 - 17F
0x0123, 0x0123, 0x0123, 0x0123, 0x0123, 0x0123, 0x0123, 0x0123,
0x0123, 0x0123, 0x0123, 0x0123, 0x0123, 0x0123, 0x0123, 0x0123,
0x0123, 0x0123, 0x0000, 0x0152, 0x0000, 0x0154, 0x0000, 0x0156,
0x0000, 0x0158, 0x0000, 0x015a, 0x0000, 0x015c, 0x015c, 0x015c,
0x0000, 0x0160, 0x0000, 0x0000, 0x0163, 0x0000, 0x0165, 0x0000,
0x0167, 0x0167, 0x0167, 0x0000, 0x016b, 0x0000, 0x016d, 0x0000,
0x016f, 0x0000, 0x0171, 0x0171, 0x0000, 0x0174, 0x0000, 0x0176,
0x0000, 0x0178, 0x0000, 0x017a, 0x0000, 0x017c, 0x0000, 0x017e,
// Entry 180 - 1BF
0x0000, 0x0000, 0x0000, 0x0182, 0x0000, 0x0184, 0x0184, 0x0184,
0x0184, 0x0000, 0x0000, 0x0000, 0x018b, 0x0000, 0x0000, 0x018e,
0x0000, 0x0000, 0x0191, 0x0000, 0x0000, 0x0000, 0x0195, 0x0000,
0x0197, 0x0000, 0x0000, 0x019a, 0x0000, 0x0000, 0x019d, 0x0000,
0x019f, 0x0000, 0x01a1, 0x0000, 0x01a3, 0x0000, 0x01a5, 0x0000,
0x01a7, 0x0000, 0x01a9, 0x0000, 0x01ab, 0x0000, 0x01ad, 0x0000,
0x01af, 0x0000, 0x01b1, 0x01b1, 0x0000, 0x01b4, 0x0000, 0x01b6,
0x0000, 0x01b8, 0x0000, 0x01ba, 0x0000, 0x01bc, 0x0000, 0x0000,
// Entry 1C0 - 1FF
0x01bf, 0x0000, 0x01c1, 0x0000, 0x01c3, 0x0000, 0x01c5, 0x0000,
0x01c7, 0x0000, 0x01c9, 0x0000, 0x01cb, 0x01cb, 0x01cb, 0x01cb,
0x0000, 0x01d0, 0x0000, 0x01d2, 0x01d2, 0x0000, 0x01d5, 0x0000,
0x01d7, 0x0000, 0x01d9, 0x0000, 0x01db, 0x0000, 0x01dd, 0x0000,
0x01df, 0x01df, 0x0000, 0x01e2, 0x0000, 0x01e4, 0x0000, 0x01e6,
0x0000, 0x01e8, 0x0000, 0x01ea, 0x0000, 0x01ec, 0x0000, 0x01ee,
0x0000, 0x01f0, 0x0000, 0x0000, 0x01f3, 0x0000, 0x01f5, 0x01f5,
0x01f5, 0x0000, 0x01f9, 0x0000, 0x01fb, 0x0000, 0x01fd, 0x0000,
// Entry 200 - 23F
0x01ff, 0x0000, 0x0000, 0x0202, 0x0000, 0x0204, 0x0204, 0x0000,
0x0207, 0x0000, 0x0209, 0x0209, 0x0000, 0x020c, 0x020c, 0x0000,
0x020f, 0x020f, 0x020f, 0x020f, 0x020f, 0x020f, 0x020f, 0x0000,
0x0217, 0x0000, 0x0219, 0x0000, 0x021b, 0x0000, 0x0000, 0x0000,
0x0000, 0x0000, 0x0221, 0x0000, 0x0000, 0x0224, 0x0000, 0x0226,
0x0226, 0x0000, 0x0229, 0x0000, 0x022b, 0x022b, 0x0000, 0x0000,
0x022f, 0x022e, 0x022e, 0x0000, 0x0000, 0x0234, 0x0000, 0x0236,
0x0000, 0x0238, 0x0000, 0x0244, 0x023a, 0x0244, 0x0244, 0x0244,
// Entry 240 - 27F
0x0244, 0x0244, 0x0244, 0x0244, 0x023a, 0x0244, 0x0244, 0x0000,
0x0247, 0x0247, 0x0247, 0x0000, 0x024b, 0x0000, 0x024d, 0x0000,
0x024f, 0x024f, 0x0000, 0x0252, 0x0000, 0x0254, 0x0254, 0x0254,
0x0254, 0x0254, 0x0254, 0x0000, 0x025b, 0x0000, 0x025d, 0x0000,
0x025f, 0x0000, 0x0261, 0x0000, 0x0263, 0x0000, 0x0265, 0x0000,
0x0000, 0x0268, 0x0268, 0x0268, 0x0000, 0x026c, 0x0000, 0x026e,
0x0000, 0x0270, 0x0000, 0x0000, 0x0000, 0x0274, 0x0273, 0x0273,
0x0000, 0x0278, 0x0000, 0x027a, 0x0000, 0x027c, 0x0000, 0x0000,
// Entry 280 - 2BF
0x0000, 0x0000, 0x0281, 0x0000, 0x0000, 0x0284, 0x0000, 0x0286,
0x0286, 0x0286, 0x0286, 0x0000, 0x028b, 0x028b, 0x028b, 0x0000,
0x028f, 0x028f, 0x028f, 0x028f, 0x028f, 0x0000, 0x0295, 0x0295,
0x0295, 0x0295, 0x0000, 0x0000, 0x0000, 0x0000, 0x029d, 0x029d,
0x029d, 0x0000, 0x02a1, 0x02a1, 0x02a1, 0x02a1, 0x0000, 0x0000,
0x02a7, 0x02a7, 0x02a7, 0x02a7, 0x0000, 0x02ac, 0x0000, 0x02ae,
0x02ae, 0x0000, 0x02b1, 0x0000, 0x02b3, 0x0000, 0x02b5, 0x02b5,
0x0000, 0x0000, 0x02b9, 0x0000, 0x0000, 0x0000, 0x02bd, 0x0000,
// Entry 2C0 - 2FF
0x02bf, 0x02bf, 0x0000, 0x0000, 0x02c3, 0x0000, 0x02c5, 0x0000,
0x02c7, 0x0000, 0x02c9, 0x0000, 0x02cb, 0x0000, 0x02cd, 0x02cd,
0x0000, 0x0000, 0x02d1, 0x0000, 0x02d3, 0x02d0, 0x02d0, 0x0000,
0x0000, 0x02d8, 0x02d7, 0x02d7, 0x0000, 0x0000, 0x02dd, 0x0000,
0x02df, 0x0000, 0x02e1, 0x0000, 0x0000, 0x02e4, 0x0000, 0x02e6,
0x0000, 0x0000, 0x02e9, 0x0000, 0x02eb, 0x0000, 0x02ed, 0x0000,
0x02ef, 0x02ef, 0x0000, 0x0000, 0x02f3, 0x02f2, 0x02f2, 0x0000,
0x02f7, 0x0000, 0x02f9, 0x02f9, 0x02f9, 0x02f9, 0x02f9, 0x0000,
// Entry 300 - 33F
0x02ff, 0x0300, 0x02ff, 0x0000, 0x0303, 0x0051, 0x00e6,
} // Size: 1574 bytes
// Total table size 1574 bytes (1KiB); checksum: 895AAF0B

1015
vendor/golang.org/x/text/internal/language/compact/tables.go generated vendored
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vendor/golang.org/x/text/internal/language/compact/tags.go generated vendored
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// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package compact
var (
und = Tag{}
Und Tag = Tag{}
Afrikaans Tag = Tag{language: afIndex, locale: afIndex}
Amharic Tag = Tag{language: amIndex, locale: amIndex}
Arabic Tag = Tag{language: arIndex, locale: arIndex}
ModernStandardArabic Tag = Tag{language: ar001Index, locale: ar001Index}
Azerbaijani Tag = Tag{language: azIndex, locale: azIndex}
Bulgarian Tag = Tag{language: bgIndex, locale: bgIndex}
Bengali Tag = Tag{language: bnIndex, locale: bnIndex}
Catalan Tag = Tag{language: caIndex, locale: caIndex}
Czech Tag = Tag{language: csIndex, locale: csIndex}
Danish Tag = Tag{language: daIndex, locale: daIndex}
German Tag = Tag{language: deIndex, locale: deIndex}
Greek Tag = Tag{language: elIndex, locale: elIndex}
English Tag = Tag{language: enIndex, locale: enIndex}
AmericanEnglish Tag = Tag{language: enUSIndex, locale: enUSIndex}
BritishEnglish Tag = Tag{language: enGBIndex, locale: enGBIndex}
Spanish Tag = Tag{language: esIndex, locale: esIndex}
EuropeanSpanish Tag = Tag{language: esESIndex, locale: esESIndex}
LatinAmericanSpanish Tag = Tag{language: es419Index, locale: es419Index}
Estonian Tag = Tag{language: etIndex, locale: etIndex}
Persian Tag = Tag{language: faIndex, locale: faIndex}
Finnish Tag = Tag{language: fiIndex, locale: fiIndex}
Filipino Tag = Tag{language: filIndex, locale: filIndex}
French Tag = Tag{language: frIndex, locale: frIndex}
CanadianFrench Tag = Tag{language: frCAIndex, locale: frCAIndex}
Gujarati Tag = Tag{language: guIndex, locale: guIndex}
Hebrew Tag = Tag{language: heIndex, locale: heIndex}
Hindi Tag = Tag{language: hiIndex, locale: hiIndex}
Croatian Tag = Tag{language: hrIndex, locale: hrIndex}
Hungarian Tag = Tag{language: huIndex, locale: huIndex}
Armenian Tag = Tag{language: hyIndex, locale: hyIndex}
Indonesian Tag = Tag{language: idIndex, locale: idIndex}
Icelandic Tag = Tag{language: isIndex, locale: isIndex}
Italian Tag = Tag{language: itIndex, locale: itIndex}
Japanese Tag = Tag{language: jaIndex, locale: jaIndex}
Georgian Tag = Tag{language: kaIndex, locale: kaIndex}
Kazakh Tag = Tag{language: kkIndex, locale: kkIndex}
Khmer Tag = Tag{language: kmIndex, locale: kmIndex}
Kannada Tag = Tag{language: knIndex, locale: knIndex}
Korean Tag = Tag{language: koIndex, locale: koIndex}
Kirghiz Tag = Tag{language: kyIndex, locale: kyIndex}
Lao Tag = Tag{language: loIndex, locale: loIndex}
Lithuanian Tag = Tag{language: ltIndex, locale: ltIndex}
Latvian Tag = Tag{language: lvIndex, locale: lvIndex}
Macedonian Tag = Tag{language: mkIndex, locale: mkIndex}
Malayalam Tag = Tag{language: mlIndex, locale: mlIndex}
Mongolian Tag = Tag{language: mnIndex, locale: mnIndex}
Marathi Tag = Tag{language: mrIndex, locale: mrIndex}
Malay Tag = Tag{language: msIndex, locale: msIndex}
Burmese Tag = Tag{language: myIndex, locale: myIndex}
Nepali Tag = Tag{language: neIndex, locale: neIndex}
Dutch Tag = Tag{language: nlIndex, locale: nlIndex}
Norwegian Tag = Tag{language: noIndex, locale: noIndex}
Punjabi Tag = Tag{language: paIndex, locale: paIndex}
Polish Tag = Tag{language: plIndex, locale: plIndex}
Portuguese Tag = Tag{language: ptIndex, locale: ptIndex}
BrazilianPortuguese Tag = Tag{language: ptBRIndex, locale: ptBRIndex}
EuropeanPortuguese Tag = Tag{language: ptPTIndex, locale: ptPTIndex}
Romanian Tag = Tag{language: roIndex, locale: roIndex}
Russian Tag = Tag{language: ruIndex, locale: ruIndex}
Sinhala Tag = Tag{language: siIndex, locale: siIndex}
Slovak Tag = Tag{language: skIndex, locale: skIndex}
Slovenian Tag = Tag{language: slIndex, locale: slIndex}
Albanian Tag = Tag{language: sqIndex, locale: sqIndex}
Serbian Tag = Tag{language: srIndex, locale: srIndex}
SerbianLatin Tag = Tag{language: srLatnIndex, locale: srLatnIndex}
Swedish Tag = Tag{language: svIndex, locale: svIndex}
Swahili Tag = Tag{language: swIndex, locale: swIndex}
Tamil Tag = Tag{language: taIndex, locale: taIndex}
Telugu Tag = Tag{language: teIndex, locale: teIndex}
Thai Tag = Tag{language: thIndex, locale: thIndex}
Turkish Tag = Tag{language: trIndex, locale: trIndex}
Ukrainian Tag = Tag{language: ukIndex, locale: ukIndex}
Urdu Tag = Tag{language: urIndex, locale: urIndex}
Uzbek Tag = Tag{language: uzIndex, locale: uzIndex}
Vietnamese Tag = Tag{language: viIndex, locale: viIndex}
Chinese Tag = Tag{language: zhIndex, locale: zhIndex}
SimplifiedChinese Tag = Tag{language: zhHansIndex, locale: zhHansIndex}
TraditionalChinese Tag = Tag{language: zhHantIndex, locale: zhHantIndex}
Zulu Tag = Tag{language: zuIndex, locale: zuIndex}
)

167
vendor/golang.org/x/text/internal/language/compose.go generated vendored
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@ -1,167 +0,0 @@
// Copyright 2018 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package language
import (
"sort"
"strings"
)
// A Builder allows constructing a Tag from individual components.
// Its main user is Compose in the top-level language package.
type Builder struct {
Tag Tag
private string // the x extension
variants []string
extensions []string
}
// Make returns a new Tag from the current settings.
func (b *Builder) Make() Tag {
t := b.Tag
if len(b.extensions) > 0 || len(b.variants) > 0 {
sort.Sort(sortVariants(b.variants))
sort.Strings(b.extensions)
if b.private != "" {
b.extensions = append(b.extensions, b.private)
}
n := maxCoreSize + tokenLen(b.variants...) + tokenLen(b.extensions...)
buf := make([]byte, n)
p := t.genCoreBytes(buf)
t.pVariant = byte(p)
p += appendTokens(buf[p:], b.variants...)
t.pExt = uint16(p)
p += appendTokens(buf[p:], b.extensions...)
t.str = string(buf[:p])
// We may not always need to remake the string, but when or when not
// to do so is rather tricky.
scan := makeScanner(buf[:p])
t, _ = parse(&scan, "")
return t
} else if b.private != "" {
t.str = b.private
t.RemakeString()
}
return t
}
// SetTag copies all the settings from a given Tag. Any previously set values
// are discarded.
func (b *Builder) SetTag(t Tag) {
b.Tag.LangID = t.LangID
b.Tag.RegionID = t.RegionID
b.Tag.ScriptID = t.ScriptID
// TODO: optimize
b.variants = b.variants[:0]
if variants := t.Variants(); variants != "" {
for _, vr := range strings.Split(variants[1:], "-") {
b.variants = append(b.variants, vr)
}
}
b.extensions, b.private = b.extensions[:0], ""
for _, e := range t.Extensions() {
b.AddExt(e)
}
}
// AddExt adds extension e to the tag. e must be a valid extension as returned
// by Tag.Extension. If the extension already exists, it will be discarded,
// except for a -u extension, where non-existing key-type pairs will added.
func (b *Builder) AddExt(e string) {
if e[0] == 'x' {
if b.private == "" {
b.private = e
}
return
}
for i, s := range b.extensions {
if s[0] == e[0] {
if e[0] == 'u' {
b.extensions[i] += e[1:]
}
return
}
}
b.extensions = append(b.extensions, e)
}
// SetExt sets the extension e to the tag. e must be a valid extension as
// returned by Tag.Extension. If the extension already exists, it will be
// overwritten, except for a -u extension, where the individual key-type pairs
// will be set.
func (b *Builder) SetExt(e string) {
if e[0] == 'x' {
b.private = e
return
}
for i, s := range b.extensions {
if s[0] == e[0] {
if e[0] == 'u' {
b.extensions[i] = e + s[1:]
} else {
b.extensions[i] = e
}
return
}
}
b.extensions = append(b.extensions, e)
}
// AddVariant adds any number of variants.
func (b *Builder) AddVariant(v ...string) {
for _, v := range v {
if v != "" {
b.variants = append(b.variants, v)
}
}
}
// ClearVariants removes any variants previously added, including those
// copied from a Tag in SetTag.
func (b *Builder) ClearVariants() {
b.variants = b.variants[:0]
}
// ClearExtensions removes any extensions previously added, including those
// copied from a Tag in SetTag.
func (b *Builder) ClearExtensions() {
b.private = ""
b.extensions = b.extensions[:0]
}
func tokenLen(token ...string) (n int) {
for _, t := range token {
n += len(t) + 1
}
return
}
func appendTokens(b []byte, token ...string) int {
p := 0
for _, t := range token {
b[p] = '-'
copy(b[p+1:], t)
p += 1 + len(t)
}
return p
}
type sortVariants []string
func (s sortVariants) Len() int {
return len(s)
}
func (s sortVariants) Swap(i, j int) {
s[j], s[i] = s[i], s[j]
}
func (s sortVariants) Less(i, j int) bool {
return variantIndex[s[i]] < variantIndex[s[j]]
}

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vendor/golang.org/x/text/internal/language/coverage.go generated vendored
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@ -1,28 +0,0 @@
// Copyright 2014 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package language
// BaseLanguages returns the list of all supported base languages. It generates
// the list by traversing the internal structures.
func BaseLanguages() []Language {
base := make([]Language, 0, NumLanguages)
for i := 0; i < langNoIndexOffset; i++ {
// We included "und" already for the value 0.
if i != nonCanonicalUnd {
base = append(base, Language(i))
}
}
i := langNoIndexOffset
for _, v := range langNoIndex {
for k := 0; k < 8; k++ {
if v&1 == 1 {
base = append(base, Language(i))
}
v >>= 1
i++
}
}
return base
}

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vendor/golang.org/x/text/internal/language/gen.go generated vendored
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20
vendor/golang.org/x/text/internal/language/gen_common.go generated vendored
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// Copyright 2014 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build ignore
package main
// This file contains code common to the maketables.go and the package code.
// AliasType is the type of an alias in AliasMap.
type AliasType int8
const (
Deprecated AliasType = iota
Macro
Legacy
AliasTypeUnknown AliasType = -1
)

596
vendor/golang.org/x/text/internal/language/language.go generated vendored
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@ -1,596 +0,0 @@
// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
//go:generate go run gen.go gen_common.go -output tables.go
package language // import "golang.org/x/text/internal/language"
// TODO: Remove above NOTE after:
// - verifying that tables are dropped correctly (most notably matcher tables).
import (
"errors"
"fmt"
"strings"
)
const (
// maxCoreSize is the maximum size of a BCP 47 tag without variants and
// extensions. Equals max lang (3) + script (4) + max reg (3) + 2 dashes.
maxCoreSize = 12
// max99thPercentileSize is a somewhat arbitrary buffer size that presumably
// is large enough to hold at least 99% of the BCP 47 tags.
max99thPercentileSize = 32
// maxSimpleUExtensionSize is the maximum size of a -u extension with one
// key-type pair. Equals len("-u-") + key (2) + dash + max value (8).
maxSimpleUExtensionSize = 14
)
// Tag represents a BCP 47 language tag. It is used to specify an instance of a
// specific language or locale. All language tag values are guaranteed to be
// well-formed. The zero value of Tag is Und.
type Tag struct {
// TODO: the following fields have the form TagTypeID. This name is chosen
// to allow refactoring the public package without conflicting with its
// Base, Script, and Region methods. Once the transition is fully completed
// the ID can be stripped from the name.
LangID Language
RegionID Region
// TODO: we will soon run out of positions for ScriptID. Idea: instead of
// storing lang, region, and ScriptID codes, store only the compact index and
// have a lookup table from this code to its expansion. This greatly speeds
// up table lookup, speed up common variant cases.
// This will also immediately free up 3 extra bytes. Also, the pVariant
// field can now be moved to the lookup table, as the compact index uniquely
// determines the offset of a possible variant.
ScriptID Script
pVariant byte // offset in str, includes preceding '-'
pExt uint16 // offset of first extension, includes preceding '-'
// str is the string representation of the Tag. It will only be used if the
// tag has variants or extensions.
str string
}
// Make is a convenience wrapper for Parse that omits the error.
// In case of an error, a sensible default is returned.
func Make(s string) Tag {
t, _ := Parse(s)
return t
}
// Raw returns the raw base language, script and region, without making an
// attempt to infer their values.
// TODO: consider removing
func (t Tag) Raw() (b Language, s Script, r Region) {
return t.LangID, t.ScriptID, t.RegionID
}
// equalTags compares language, script and region subtags only.
func (t Tag) equalTags(a Tag) bool {
return t.LangID == a.LangID && t.ScriptID == a.ScriptID && t.RegionID == a.RegionID
}
// IsRoot returns true if t is equal to language "und".
func (t Tag) IsRoot() bool {
if int(t.pVariant) < len(t.str) {
return false
}
return t.equalTags(Und)
}
// IsPrivateUse reports whether the Tag consists solely of an IsPrivateUse use
// tag.
func (t Tag) IsPrivateUse() bool {
return t.str != "" && t.pVariant == 0
}
// RemakeString is used to update t.str in case lang, script or region changed.
// It is assumed that pExt and pVariant still point to the start of the
// respective parts.
func (t *Tag) RemakeString() {
if t.str == "" {
return
}
extra := t.str[t.pVariant:]
if t.pVariant > 0 {
extra = extra[1:]
}
if t.equalTags(Und) && strings.HasPrefix(extra, "x-") {
t.str = extra
t.pVariant = 0
t.pExt = 0
return
}
var buf [max99thPercentileSize]byte // avoid extra memory allocation in most cases.
b := buf[:t.genCoreBytes(buf[:])]
if extra != "" {
diff := len(b) - int(t.pVariant)
b = append(b, '-')
b = append(b, extra...)
t.pVariant = uint8(int(t.pVariant) + diff)
t.pExt = uint16(int(t.pExt) + diff)
} else {
t.pVariant = uint8(len(b))
t.pExt = uint16(len(b))
}
t.str = string(b)
}
// genCoreBytes writes a string for the base languages, script and region tags
// to the given buffer and returns the number of bytes written. It will never
// write more than maxCoreSize bytes.
func (t *Tag) genCoreBytes(buf []byte) int {
n := t.LangID.StringToBuf(buf[:])
if t.ScriptID != 0 {
n += copy(buf[n:], "-")
n += copy(buf[n:], t.ScriptID.String())
}
if t.RegionID != 0 {
n += copy(buf[n:], "-")
n += copy(buf[n:], t.RegionID.String())
}
return n
}
// String returns the canonical string representation of the language tag.
func (t Tag) String() string {
if t.str != "" {
return t.str
}
if t.ScriptID == 0 && t.RegionID == 0 {
return t.LangID.String()
}
buf := [maxCoreSize]byte{}
return string(buf[:t.genCoreBytes(buf[:])])
}
// MarshalText implements encoding.TextMarshaler.
func (t Tag) MarshalText() (text []byte, err error) {
if t.str != "" {
text = append(text, t.str...)
} else if t.ScriptID == 0 && t.RegionID == 0 {
text = append(text, t.LangID.String()...)
} else {
buf := [maxCoreSize]byte{}
text = buf[:t.genCoreBytes(buf[:])]
}
return text, nil
}
// UnmarshalText implements encoding.TextUnmarshaler.
func (t *Tag) UnmarshalText(text []byte) error {
tag, err := Parse(string(text))
*t = tag
return err
}
// Variants returns the part of the tag holding all variants or the empty string
// if there are no variants defined.
func (t Tag) Variants() string {
if t.pVariant == 0 {
return ""
}
return t.str[t.pVariant:t.pExt]
}
// VariantOrPrivateUseTags returns variants or private use tags.
func (t Tag) VariantOrPrivateUseTags() string {
if t.pExt > 0 {
return t.str[t.pVariant:t.pExt]
}
return t.str[t.pVariant:]
}
// HasString reports whether this tag defines more than just the raw
// components.
func (t Tag) HasString() bool {
return t.str != ""
}
// Parent returns the CLDR parent of t. In CLDR, missing fields in data for a
// specific language are substituted with fields from the parent language.
// The parent for a language may change for newer versions of CLDR.
func (t Tag) Parent() Tag {
if t.str != "" {
// Strip the variants and extensions.
b, s, r := t.Raw()
t = Tag{LangID: b, ScriptID: s, RegionID: r}
if t.RegionID == 0 && t.ScriptID != 0 && t.LangID != 0 {
base, _ := addTags(Tag{LangID: t.LangID})
if base.ScriptID == t.ScriptID {
return Tag{LangID: t.LangID}
}
}
return t
}
if t.LangID != 0 {
if t.RegionID != 0 {
maxScript := t.ScriptID
if maxScript == 0 {
max, _ := addTags(t)
maxScript = max.ScriptID
}
for i := range parents {
if Language(parents[i].lang) == t.LangID && Script(parents[i].maxScript) == maxScript {
for _, r := range parents[i].fromRegion {
if Region(r) == t.RegionID {
return Tag{
LangID: t.LangID,
ScriptID: Script(parents[i].script),
RegionID: Region(parents[i].toRegion),
}
}
}
}
}
// Strip the script if it is the default one.
base, _ := addTags(Tag{LangID: t.LangID})
if base.ScriptID != maxScript {
return Tag{LangID: t.LangID, ScriptID: maxScript}
}
return Tag{LangID: t.LangID}
} else if t.ScriptID != 0 {
// The parent for an base-script pair with a non-default script is
// "und" instead of the base language.
base, _ := addTags(Tag{LangID: t.LangID})
if base.ScriptID != t.ScriptID {
return Und
}
return Tag{LangID: t.LangID}
}
}
return Und
}
// ParseExtension parses s as an extension and returns it on success.
func ParseExtension(s string) (ext string, err error) {
scan := makeScannerString(s)
var end int
if n := len(scan.token); n != 1 {
return "", ErrSyntax
}
scan.toLower(0, len(scan.b))
end = parseExtension(&scan)
if end != len(s) {
return "", ErrSyntax
}
return string(scan.b), nil
}
// HasVariants reports whether t has variants.
func (t Tag) HasVariants() bool {
return uint16(t.pVariant) < t.pExt
}
// HasExtensions reports whether t has extensions.
func (t Tag) HasExtensions() bool {
return int(t.pExt) < len(t.str)
}
// Extension returns the extension of type x for tag t. It will return
// false for ok if t does not have the requested extension. The returned
// extension will be invalid in this case.
func (t Tag) Extension(x byte) (ext string, ok bool) {
for i := int(t.pExt); i < len(t.str)-1; {
var ext string
i, ext = getExtension(t.str, i)
if ext[0] == x {
return ext, true
}
}
return "", false
}
// Extensions returns all extensions of t.
func (t Tag) Extensions() []string {
e := []string{}
for i := int(t.pExt); i < len(t.str)-1; {
var ext string
i, ext = getExtension(t.str, i)
e = append(e, ext)
}
return e
}
// TypeForKey returns the type associated with the given key, where key and type
// are of the allowed values defined for the Unicode locale extension ('u') in
// http://www.unicode.org/reports/tr35/#Unicode_Language_and_Locale_Identifiers.
// TypeForKey will traverse the inheritance chain to get the correct value.
func (t Tag) TypeForKey(key string) string {
if start, end, _ := t.findTypeForKey(key); end != start {
return t.str[start:end]
}
return ""
}
var (
errPrivateUse = errors.New("cannot set a key on a private use tag")
errInvalidArguments = errors.New("invalid key or type")
)
// SetTypeForKey returns a new Tag with the key set to type, where key and type
// are of the allowed values defined for the Unicode locale extension ('u') in
// http://www.unicode.org/reports/tr35/#Unicode_Language_and_Locale_Identifiers.
// An empty value removes an existing pair with the same key.
func (t Tag) SetTypeForKey(key, value string) (Tag, error) {
if t.IsPrivateUse() {
return t, errPrivateUse
}
if len(key) != 2 {
return t, errInvalidArguments
}
// Remove the setting if value is "".
if value == "" {
start, end, _ := t.findTypeForKey(key)
if start != end {
// Remove key tag and leading '-'.
start -= 4
// Remove a possible empty extension.
if (end == len(t.str) || t.str[end+2] == '-') && t.str[start-2] == '-' {
start -= 2
}
if start == int(t.pVariant) && end == len(t.str) {
t.str = ""
t.pVariant, t.pExt = 0, 0
} else {
t.str = fmt.Sprintf("%s%s", t.str[:start], t.str[end:])
}
}
return t, nil
}
if len(value) < 3 || len(value) > 8 {
return t, errInvalidArguments
}
var (
buf [maxCoreSize + maxSimpleUExtensionSize]byte
uStart int // start of the -u extension.
)
// Generate the tag string if needed.
if t.str == "" {
uStart = t.genCoreBytes(buf[:])
buf[uStart] = '-'
uStart++
}
// Create new key-type pair and parse it to verify.
b := buf[uStart:]
copy(b, "u-")
copy(b[2:], key)
b[4] = '-'
b = b[:5+copy(b[5:], value)]
scan := makeScanner(b)
if parseExtensions(&scan); scan.err != nil {
return t, scan.err
}
// Assemble the replacement string.
if t.str == "" {
t.pVariant, t.pExt = byte(uStart-1), uint16(uStart-1)
t.str = string(buf[:uStart+len(b)])
} else {
s := t.str
start, end, hasExt := t.findTypeForKey(key)
if start == end {
if hasExt {
b = b[2:]
}
t.str = fmt.Sprintf("%s-%s%s", s[:start], b, s[end:])
} else {
t.str = fmt.Sprintf("%s%s%s", s[:start], value, s[end:])
}
}
return t, nil
}
// findKeyAndType returns the start and end position for the type corresponding
// to key or the point at which to insert the key-value pair if the type
// wasn't found. The hasExt return value reports whether an -u extension was present.
// Note: the extensions are typically very small and are likely to contain
// only one key-type pair.
func (t Tag) findTypeForKey(key string) (start, end int, hasExt bool) {
p := int(t.pExt)
if len(key) != 2 || p == len(t.str) || p == 0 {
return p, p, false
}
s := t.str
// Find the correct extension.
for p++; s[p] != 'u'; p++ {
if s[p] > 'u' {
p--
return p, p, false
}
if p = nextExtension(s, p); p == len(s) {
return len(s), len(s), false
}
}
// Proceed to the hyphen following the extension name.
p++
// curKey is the key currently being processed.
curKey := ""
// Iterate over keys until we get the end of a section.
for {
// p points to the hyphen preceding the current token.
if p3 := p + 3; s[p3] == '-' {
// Found a key.
// Check whether we just processed the key that was requested.
if curKey == key {
return start, p, true
}
// Set to the next key and continue scanning type tokens.
curKey = s[p+1 : p3]
if curKey > key {
return p, p, true
}
// Start of the type token sequence.
start = p + 4
// A type is at least 3 characters long.
p += 7 // 4 + 3
} else {
// Attribute or type, which is at least 3 characters long.
p += 4
}
// p points past the third character of a type or attribute.
max := p + 5 // maximum length of token plus hyphen.
if len(s) < max {
max = len(s)
}
for ; p < max && s[p] != '-'; p++ {
}
// Bail if we have exhausted all tokens or if the next token starts
// a new extension.
if p == len(s) || s[p+2] == '-' {
if curKey == key {
return start, p, true
}
return p, p, true
}
}
}
// ParseBase parses a 2- or 3-letter ISO 639 code.
// It returns a ValueError if s is a well-formed but unknown language identifier
// or another error if another error occurred.
func ParseBase(s string) (Language, error) {
if n := len(s); n < 2 || 3 < n {
return 0, ErrSyntax
}
var buf [3]byte
return getLangID(buf[:copy(buf[:], s)])
}
// ParseScript parses a 4-letter ISO 15924 code.
// It returns a ValueError if s is a well-formed but unknown script identifier
// or another error if another error occurred.
func ParseScript(s string) (Script, error) {
if len(s) != 4 {
return 0, ErrSyntax
}
var buf [4]byte
return getScriptID(script, buf[:copy(buf[:], s)])
}
// EncodeM49 returns the Region for the given UN M.49 code.
// It returns an error if r is not a valid code.
func EncodeM49(r int) (Region, error) {
return getRegionM49(r)
}
// ParseRegion parses a 2- or 3-letter ISO 3166-1 or a UN M.49 code.
// It returns a ValueError if s is a well-formed but unknown region identifier
// or another error if another error occurred.
func ParseRegion(s string) (Region, error) {
if n := len(s); n < 2 || 3 < n {
return 0, ErrSyntax
}
var buf [3]byte
return getRegionID(buf[:copy(buf[:], s)])
}
// IsCountry returns whether this region is a country or autonomous area. This
// includes non-standard definitions from CLDR.
func (r Region) IsCountry() bool {
if r == 0 || r.IsGroup() || r.IsPrivateUse() && r != _XK {
return false
}
return true
}
// IsGroup returns whether this region defines a collection of regions. This
// includes non-standard definitions from CLDR.
func (r Region) IsGroup() bool {
if r == 0 {
return false
}
return int(regionInclusion[r]) < len(regionContainment)
}
// Contains returns whether Region c is contained by Region r. It returns true
// if c == r.
func (r Region) Contains(c Region) bool {
if r == c {
return true
}
g := regionInclusion[r]
if g >= nRegionGroups {
return false
}
m := regionContainment[g]
d := regionInclusion[c]
b := regionInclusionBits[d]
// A contained country may belong to multiple disjoint groups. Matching any
// of these indicates containment. If the contained region is a group, it
// must strictly be a subset.
if d >= nRegionGroups {
return b&m != 0
}
return b&^m == 0
}
var errNoTLD = errors.New("language: region is not a valid ccTLD")
// TLD returns the country code top-level domain (ccTLD). UK is returned for GB.
// In all other cases it returns either the region itself or an error.
//
// This method may return an error for a region for which there exists a
// canonical form with a ccTLD. To get that ccTLD canonicalize r first. The
// region will already be canonicalized it was obtained from a Tag that was
// obtained using any of the default methods.
func (r Region) TLD() (Region, error) {
// See http://en.wikipedia.org/wiki/Country_code_top-level_domain for the
// difference between ISO 3166-1 and IANA ccTLD.
if r == _GB {
r = _UK
}
if (r.typ() & ccTLD) == 0 {
return 0, errNoTLD
}
return r, nil
}
// Canonicalize returns the region or a possible replacement if the region is
// deprecated. It will not return a replacement for deprecated regions that
// are split into multiple regions.
func (r Region) Canonicalize() Region {
if cr := normRegion(r); cr != 0 {
return cr
}
return r
}
// Variant represents a registered variant of a language as defined by BCP 47.
type Variant struct {
ID uint8
str string
}
// ParseVariant parses and returns a Variant. An error is returned if s is not
// a valid variant.
func ParseVariant(s string) (Variant, error) {
s = strings.ToLower(s)
if id, ok := variantIndex[s]; ok {
return Variant{id, s}, nil
}
return Variant{}, NewValueError([]byte(s))
}
// String returns the string representation of the variant.
func (v Variant) String() string {
return v.str
}

412
vendor/golang.org/x/text/internal/language/lookup.go generated vendored
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@ -1,412 +0,0 @@
// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package language
import (
"bytes"
"fmt"
"sort"
"strconv"
"golang.org/x/text/internal/tag"
)
// findIndex tries to find the given tag in idx and returns a standardized error
// if it could not be found.
func findIndex(idx tag.Index, key []byte, form string) (index int, err error) {
if !tag.FixCase(form, key) {
return 0, ErrSyntax
}
i := idx.Index(key)
if i == -1 {
return 0, NewValueError(key)
}
return i, nil
}
func searchUint(imap []uint16, key uint16) int {
return sort.Search(len(imap), func(i int) bool {
return imap[i] >= key
})
}
type Language uint16
// getLangID returns the langID of s if s is a canonical subtag
// or langUnknown if s is not a canonical subtag.
func getLangID(s []byte) (Language, error) {
if len(s) == 2 {
return getLangISO2(s)
}
return getLangISO3(s)
}
// TODO language normalization as well as the AliasMaps could be moved to the
// higher level package, but it is a bit tricky to separate the generation.
func (id Language) Canonicalize() (Language, AliasType) {
return normLang(id)
}
// mapLang returns the mapped langID of id according to mapping m.
func normLang(id Language) (Language, AliasType) {
k := sort.Search(len(AliasMap), func(i int) bool {
return AliasMap[i].From >= uint16(id)
})
if k < len(AliasMap) && AliasMap[k].From == uint16(id) {
return Language(AliasMap[k].To), AliasTypes[k]
}
return id, AliasTypeUnknown
}
// getLangISO2 returns the langID for the given 2-letter ISO language code
// or unknownLang if this does not exist.
func getLangISO2(s []byte) (Language, error) {
if !tag.FixCase("zz", s) {
return 0, ErrSyntax
}
if i := lang.Index(s); i != -1 && lang.Elem(i)[3] != 0 {
return Language(i), nil
}
return 0, NewValueError(s)
}
const base = 'z' - 'a' + 1
func strToInt(s []byte) uint {
v := uint(0)
for i := 0; i < len(s); i++ {
v *= base
v += uint(s[i] - 'a')
}
return v
}
// converts the given integer to the original ASCII string passed to strToInt.
// len(s) must match the number of characters obtained.
func intToStr(v uint, s []byte) {
for i := len(s) - 1; i >= 0; i-- {
s[i] = byte(v%base) + 'a'
v /= base
}
}
// getLangISO3 returns the langID for the given 3-letter ISO language code
// or unknownLang if this does not exist.
func getLangISO3(s []byte) (Language, error) {
if tag.FixCase("und", s) {
// first try to match canonical 3-letter entries
for i := lang.Index(s[:2]); i != -1; i = lang.Next(s[:2], i) {
if e := lang.Elem(i); e[3] == 0 && e[2] == s[2] {
// We treat "und" as special and always translate it to "unspecified".
// Note that ZZ and Zzzz are private use and are not treated as
// unspecified by default.
id := Language(i)
if id == nonCanonicalUnd {
return 0, nil
}
return id, nil
}
}
if i := altLangISO3.Index(s); i != -1 {
return Language(altLangIndex[altLangISO3.Elem(i)[3]]), nil
}
n := strToInt(s)
if langNoIndex[n/8]&(1<<(n%8)) != 0 {
return Language(n) + langNoIndexOffset, nil
}
// Check for non-canonical uses of ISO3.
for i := lang.Index(s[:1]); i != -1; i = lang.Next(s[:1], i) {
if e := lang.Elem(i); e[2] == s[1] && e[3] == s[2] {
return Language(i), nil
}
}
return 0, NewValueError(s)
}
return 0, ErrSyntax
}
// StringToBuf writes the string to b and returns the number of bytes
// written. cap(b) must be >= 3.
func (id Language) StringToBuf(b []byte) int {
if id >= langNoIndexOffset {
intToStr(uint(id)-langNoIndexOffset, b[:3])
return 3
} else if id == 0 {
return copy(b, "und")
}
l := lang[id<<2:]
if l[3] == 0 {
return copy(b, l[:3])
}
return copy(b, l[:2])
}
// String returns the BCP 47 representation of the langID.
// Use b as variable name, instead of id, to ensure the variable
// used is consistent with that of Base in which this type is embedded.
func (b Language) String() string {
if b == 0 {
return "und"
} else if b >= langNoIndexOffset {
b -= langNoIndexOffset
buf := [3]byte{}
intToStr(uint(b), buf[:])
return string(buf[:])
}
l := lang.Elem(int(b))
if l[3] == 0 {
return l[:3]
}
return l[:2]
}
// ISO3 returns the ISO 639-3 language code.
func (b Language) ISO3() string {
if b == 0 || b >= langNoIndexOffset {
return b.String()
}
l := lang.Elem(int(b))
if l[3] == 0 {
return l[:3]
} else if l[2] == 0 {
return altLangISO3.Elem(int(l[3]))[:3]
}
// This allocation will only happen for 3-letter ISO codes
// that are non-canonical BCP 47 language identifiers.
return l[0:1] + l[2:4]
}
// IsPrivateUse reports whether this language code is reserved for private use.
func (b Language) IsPrivateUse() bool {
return langPrivateStart <= b && b <= langPrivateEnd
}
// SuppressScript returns the script marked as SuppressScript in the IANA
// language tag repository, or 0 if there is no such script.
func (b Language) SuppressScript() Script {
if b < langNoIndexOffset {
return Script(suppressScript[b])
}
return 0
}
type Region uint16
// getRegionID returns the region id for s if s is a valid 2-letter region code
// or unknownRegion.
func getRegionID(s []byte) (Region, error) {
if len(s) == 3 {
if isAlpha(s[0]) {
return getRegionISO3(s)
}
if i, err := strconv.ParseUint(string(s), 10, 10); err == nil {
return getRegionM49(int(i))
}
}
return getRegionISO2(s)
}
// getRegionISO2 returns the regionID for the given 2-letter ISO country code
// or unknownRegion if this does not exist.
func getRegionISO2(s []byte) (Region, error) {
i, err := findIndex(regionISO, s, "ZZ")
if err != nil {
return 0, err
}
return Region(i) + isoRegionOffset, nil
}
// getRegionISO3 returns the regionID for the given 3-letter ISO country code
// or unknownRegion if this does not exist.
func getRegionISO3(s []byte) (Region, error) {
if tag.FixCase("ZZZ", s) {
for i := regionISO.Index(s[:1]); i != -1; i = regionISO.Next(s[:1], i) {
if e := regionISO.Elem(i); e[2] == s[1] && e[3] == s[2] {
return Region(i) + isoRegionOffset, nil
}
}
for i := 0; i < len(altRegionISO3); i += 3 {
if tag.Compare(altRegionISO3[i:i+3], s) == 0 {
return Region(altRegionIDs[i/3]), nil
}
}
return 0, NewValueError(s)
}
return 0, ErrSyntax
}
func getRegionM49(n int) (Region, error) {
if 0 < n && n <= 999 {
const (
searchBits = 7
regionBits = 9
regionMask = 1<<regionBits - 1
)
idx := n >> searchBits
buf := fromM49[m49Index[idx]:m49Index[idx+1]]
val := uint16(n) << regionBits // we rely on bits shifting out
i := sort.Search(len(buf), func(i int) bool {
return buf[i] >= val
})
if r := fromM49[int(m49Index[idx])+i]; r&^regionMask == val {
return Region(r & regionMask), nil
}
}
var e ValueError
fmt.Fprint(bytes.NewBuffer([]byte(e.v[:])), n)
return 0, e
}
// normRegion returns a region if r is deprecated or 0 otherwise.
// TODO: consider supporting BYS (-> BLR), CSK (-> 200 or CZ), PHI (-> PHL) and AFI (-> DJ).
// TODO: consider mapping split up regions to new most populous one (like CLDR).
func normRegion(r Region) Region {
m := regionOldMap
k := sort.Search(len(m), func(i int) bool {
return m[i].From >= uint16(r)
})
if k < len(m) && m[k].From == uint16(r) {
return Region(m[k].To)
}
return 0
}
const (
iso3166UserAssigned = 1 << iota
ccTLD
bcp47Region
)
func (r Region) typ() byte {
return regionTypes[r]
}
// String returns the BCP 47 representation for the region.
// It returns "ZZ" for an unspecified region.
func (r Region) String() string {
if r < isoRegionOffset {
if r == 0 {
return "ZZ"
}
return fmt.Sprintf("%03d", r.M49())
}
r -= isoRegionOffset
return regionISO.Elem(int(r))[:2]
}
// ISO3 returns the 3-letter ISO code of r.
// Note that not all regions have a 3-letter ISO code.
// In such cases this method returns "ZZZ".
func (r Region) ISO3() string {
if r < isoRegionOffset {
return "ZZZ"
}
r -= isoRegionOffset
reg := regionISO.Elem(int(r))
switch reg[2] {
case 0:
return altRegionISO3[reg[3]:][:3]
case ' ':
return "ZZZ"
}
return reg[0:1] + reg[2:4]
}
// M49 returns the UN M.49 encoding of r, or 0 if this encoding
// is not defined for r.
func (r Region) M49() int {
return int(m49[r])
}
// IsPrivateUse reports whether r has the ISO 3166 User-assigned status. This
// may include private-use tags that are assigned by CLDR and used in this
// implementation. So IsPrivateUse and IsCountry can be simultaneously true.
func (r Region) IsPrivateUse() bool {
return r.typ()&iso3166UserAssigned != 0
}
type Script uint8
// getScriptID returns the script id for string s. It assumes that s
// is of the format [A-Z][a-z]{3}.
func getScriptID(idx tag.Index, s []byte) (Script, error) {
i, err := findIndex(idx, s, "Zzzz")
return Script(i), err
}
// String returns the script code in title case.
// It returns "Zzzz" for an unspecified script.
func (s Script) String() string {
if s == 0 {
return "Zzzz"
}
return script.Elem(int(s))
}
// IsPrivateUse reports whether this script code is reserved for private use.
func (s Script) IsPrivateUse() bool {
return _Qaaa <= s && s <= _Qabx
}
const (
maxAltTaglen = len("en-US-POSIX")
maxLen = maxAltTaglen
)
var (
// grandfatheredMap holds a mapping from legacy and grandfathered tags to
// their base language or index to more elaborate tag.
grandfatheredMap = map[[maxLen]byte]int16{
[maxLen]byte{'a', 'r', 't', '-', 'l', 'o', 'j', 'b', 'a', 'n'}: _jbo, // art-lojban
[maxLen]byte{'i', '-', 'a', 'm', 'i'}: _ami, // i-ami
[maxLen]byte{'i', '-', 'b', 'n', 'n'}: _bnn, // i-bnn
[maxLen]byte{'i', '-', 'h', 'a', 'k'}: _hak, // i-hak
[maxLen]byte{'i', '-', 'k', 'l', 'i', 'n', 'g', 'o', 'n'}: _tlh, // i-klingon
[maxLen]byte{'i', '-', 'l', 'u', 'x'}: _lb, // i-lux
[maxLen]byte{'i', '-', 'n', 'a', 'v', 'a', 'j', 'o'}: _nv, // i-navajo
[maxLen]byte{'i', '-', 'p', 'w', 'n'}: _pwn, // i-pwn
[maxLen]byte{'i', '-', 't', 'a', 'o'}: _tao, // i-tao
[maxLen]byte{'i', '-', 't', 'a', 'y'}: _tay, // i-tay
[maxLen]byte{'i', '-', 't', 's', 'u'}: _tsu, // i-tsu
[maxLen]byte{'n', 'o', '-', 'b', 'o', 'k'}: _nb, // no-bok
[maxLen]byte{'n', 'o', '-', 'n', 'y', 'n'}: _nn, // no-nyn
[maxLen]byte{'s', 'g', 'n', '-', 'b', 'e', '-', 'f', 'r'}: _sfb, // sgn-BE-FR
[maxLen]byte{'s', 'g', 'n', '-', 'b', 'e', '-', 'n', 'l'}: _vgt, // sgn-BE-NL
[maxLen]byte{'s', 'g', 'n', '-', 'c', 'h', '-', 'd', 'e'}: _sgg, // sgn-CH-DE
[maxLen]byte{'z', 'h', '-', 'g', 'u', 'o', 'y', 'u'}: _cmn, // zh-guoyu
[maxLen]byte{'z', 'h', '-', 'h', 'a', 'k', 'k', 'a'}: _hak, // zh-hakka
[maxLen]byte{'z', 'h', '-', 'm', 'i', 'n', '-', 'n', 'a', 'n'}: _nan, // zh-min-nan
[maxLen]byte{'z', 'h', '-', 'x', 'i', 'a', 'n', 'g'}: _hsn, // zh-xiang
// Grandfathered tags with no modern replacement will be converted as
// follows:
[maxLen]byte{'c', 'e', 'l', '-', 'g', 'a', 'u', 'l', 'i', 's', 'h'}: -1, // cel-gaulish
[maxLen]byte{'e', 'n', '-', 'g', 'b', '-', 'o', 'e', 'd'}: -2, // en-GB-oed
[maxLen]byte{'i', '-', 'd', 'e', 'f', 'a', 'u', 'l', 't'}: -3, // i-default
[maxLen]byte{'i', '-', 'e', 'n', 'o', 'c', 'h', 'i', 'a', 'n'}: -4, // i-enochian
[maxLen]byte{'i', '-', 'm', 'i', 'n', 'g', 'o'}: -5, // i-mingo
[maxLen]byte{'z', 'h', '-', 'm', 'i', 'n'}: -6, // zh-min
// CLDR-specific tag.
[maxLen]byte{'r', 'o', 'o', 't'}: 0, // root
[maxLen]byte{'e', 'n', '-', 'u', 's', '-', 'p', 'o', 's', 'i', 'x'}: -7, // en_US_POSIX"
}
altTagIndex = [...]uint8{0, 17, 31, 45, 61, 74, 86, 102}
altTags = "xtg-x-cel-gaulishen-GB-oxendicten-x-i-defaultund-x-i-enochiansee-x-i-mingonan-x-zh-minen-US-u-va-posix"
)
func grandfathered(s [maxAltTaglen]byte) (t Tag, ok bool) {
if v, ok := grandfatheredMap[s]; ok {
if v < 0 {
return Make(altTags[altTagIndex[-v-1]:altTagIndex[-v]]), true
}
t.LangID = Language(v)
return t, true
}
return t, false
}

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vendor/golang.org/x/text/internal/language/match.go generated vendored
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@ -1,226 +0,0 @@
// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package language
import "errors"
type scriptRegionFlags uint8
const (
isList = 1 << iota
scriptInFrom
regionInFrom
)
func (t *Tag) setUndefinedLang(id Language) {
if t.LangID == 0 {
t.LangID = id
}
}
func (t *Tag) setUndefinedScript(id Script) {
if t.ScriptID == 0 {
t.ScriptID = id
}
}
func (t *Tag) setUndefinedRegion(id Region) {
if t.RegionID == 0 || t.RegionID.Contains(id) {
t.RegionID = id
}
}
// ErrMissingLikelyTagsData indicates no information was available
// to compute likely values of missing tags.
var ErrMissingLikelyTagsData = errors.New("missing likely tags data")
// addLikelySubtags sets subtags to their most likely value, given the locale.
// In most cases this means setting fields for unknown values, but in some
// cases it may alter a value. It returns an ErrMissingLikelyTagsData error
// if the given locale cannot be expanded.
func (t Tag) addLikelySubtags() (Tag, error) {
id, err := addTags(t)
if err != nil {
return t, err
} else if id.equalTags(t) {
return t, nil
}
id.RemakeString()
return id, nil
}
// specializeRegion attempts to specialize a group region.
func specializeRegion(t *Tag) bool {
if i := regionInclusion[t.RegionID]; i < nRegionGroups {
x := likelyRegionGroup[i]
if Language(x.lang) == t.LangID && Script(x.script) == t.ScriptID {
t.RegionID = Region(x.region)
}
return true
}
return false
}
// Maximize returns a new tag with missing tags filled in.
func (t Tag) Maximize() (Tag, error) {
return addTags(t)
}
func addTags(t Tag) (Tag, error) {
// We leave private use identifiers alone.
if t.IsPrivateUse() {
return t, nil
}
if t.ScriptID != 0 && t.RegionID != 0 {
if t.LangID != 0 {
// already fully specified
specializeRegion(&t)
return t, nil
}
// Search matches for und-script-region. Note that for these cases
// region will never be a group so there is no need to check for this.
list := likelyRegion[t.RegionID : t.RegionID+1]
if x := list[0]; x.flags&isList != 0 {
list = likelyRegionList[x.lang : x.lang+uint16(x.script)]
}
for _, x := range list {
// Deviating from the spec. See match_test.go for details.
if Script(x.script) == t.ScriptID {
t.setUndefinedLang(Language(x.lang))
return t, nil
}
}
}
if t.LangID != 0 {
// Search matches for lang-script and lang-region, where lang != und.
if t.LangID < langNoIndexOffset {
x := likelyLang[t.LangID]
if x.flags&isList != 0 {
list := likelyLangList[x.region : x.region+uint16(x.script)]
if t.ScriptID != 0 {
for _, x := range list {
if Script(x.script) == t.ScriptID && x.flags&scriptInFrom != 0 {
t.setUndefinedRegion(Region(x.region))
return t, nil
}
}
} else if t.RegionID != 0 {
count := 0
goodScript := true
tt := t
for _, x := range list {
// We visit all entries for which the script was not
// defined, including the ones where the region was not
// defined. This allows for proper disambiguation within
// regions.
if x.flags&scriptInFrom == 0 && t.RegionID.Contains(Region(x.region)) {
tt.RegionID = Region(x.region)
tt.setUndefinedScript(Script(x.script))
goodScript = goodScript && tt.ScriptID == Script(x.script)
count++
}
}
if count == 1 {
return tt, nil
}
// Even if we fail to find a unique Region, we might have
// an unambiguous script.
if goodScript {
t.ScriptID = tt.ScriptID
}
}
}
}
} else {
// Search matches for und-script.
if t.ScriptID != 0 {
x := likelyScript[t.ScriptID]
if x.region != 0 {
t.setUndefinedRegion(Region(x.region))
t.setUndefinedLang(Language(x.lang))
return t, nil
}
}
// Search matches for und-region. If und-script-region exists, it would
// have been found earlier.
if t.RegionID != 0 {
if i := regionInclusion[t.RegionID]; i < nRegionGroups {
x := likelyRegionGroup[i]
if x.region != 0 {
t.setUndefinedLang(Language(x.lang))
t.setUndefinedScript(Script(x.script))
t.RegionID = Region(x.region)
}
} else {
x := likelyRegion[t.RegionID]
if x.flags&isList != 0 {
x = likelyRegionList[x.lang]
}
if x.script != 0 && x.flags != scriptInFrom {
t.setUndefinedLang(Language(x.lang))
t.setUndefinedScript(Script(x.script))
return t, nil
}
}
}
}
// Search matches for lang.
if t.LangID < langNoIndexOffset {
x := likelyLang[t.LangID]
if x.flags&isList != 0 {
x = likelyLangList[x.region]
}
if x.region != 0 {
t.setUndefinedScript(Script(x.script))
t.setUndefinedRegion(Region(x.region))
}
specializeRegion(&t)
if t.LangID == 0 {
t.LangID = _en // default language
}
return t, nil
}
return t, ErrMissingLikelyTagsData
}
func (t *Tag) setTagsFrom(id Tag) {
t.LangID = id.LangID
t.ScriptID = id.ScriptID
t.RegionID = id.RegionID
}
// minimize removes the region or script subtags from t such that
// t.addLikelySubtags() == t.minimize().addLikelySubtags().
func (t Tag) minimize() (Tag, error) {
t, err := minimizeTags(t)
if err != nil {
return t, err
}
t.RemakeString()
return t, nil
}
// minimizeTags mimics the behavior of the ICU 51 C implementation.
func minimizeTags(t Tag) (Tag, error) {
if t.equalTags(Und) {
return t, nil
}
max, err := addTags(t)
if err != nil {
return t, err
}
for _, id := range [...]Tag{
{LangID: t.LangID},
{LangID: t.LangID, RegionID: t.RegionID},
{LangID: t.LangID, ScriptID: t.ScriptID},
} {
if x, err := addTags(id); err == nil && max.equalTags(x) {
t.setTagsFrom(id)
break
}
}
return t, nil
}

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vendor/golang.org/x/text/internal/language/parse.go generated vendored
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// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package language
import (
"bytes"
"errors"
"fmt"
"sort"
"golang.org/x/text/internal/tag"
)
// isAlpha returns true if the byte is not a digit.
// b must be an ASCII letter or digit.
func isAlpha(b byte) bool {
return b > '9'
}
// isAlphaNum returns true if the string contains only ASCII letters or digits.
func isAlphaNum(s []byte) bool {
for _, c := range s {
if !('a' <= c && c <= 'z' || 'A' <= c && c <= 'Z' || '0' <= c && c <= '9') {
return false
}
}
return true
}
// ErrSyntax is returned by any of the parsing functions when the
// input is not well-formed, according to BCP 47.
// TODO: return the position at which the syntax error occurred?
var ErrSyntax = errors.New("language: tag is not well-formed")
// ErrDuplicateKey is returned when a tag contains the same key twice with
// different values in the -u section.
var ErrDuplicateKey = errors.New("language: different values for same key in -u extension")
// ValueError is returned by any of the parsing functions when the
// input is well-formed but the respective subtag is not recognized
// as a valid value.
type ValueError struct {
v [8]byte
}
// NewValueError creates a new ValueError.
func NewValueError(tag []byte) ValueError {
var e ValueError
copy(e.v[:], tag)
return e
}
func (e ValueError) tag() []byte {
n := bytes.IndexByte(e.v[:], 0)
if n == -1 {
n = 8
}
return e.v[:n]
}
// Error implements the error interface.
func (e ValueError) Error() string {
return fmt.Sprintf("language: subtag %q is well-formed but unknown", e.tag())
}
// Subtag returns the subtag for which the error occurred.
func (e ValueError) Subtag() string {
return string(e.tag())
}
// scanner is used to scan BCP 47 tokens, which are separated by _ or -.
type scanner struct {
b []byte
bytes [max99thPercentileSize]byte
token []byte
start int // start position of the current token
end int // end position of the current token
next int // next point for scan
err error
done bool
}
func makeScannerString(s string) scanner {
scan := scanner{}
if len(s) <= len(scan.bytes) {
scan.b = scan.bytes[:copy(scan.bytes[:], s)]
} else {
scan.b = []byte(s)
}
scan.init()
return scan
}
// makeScanner returns a scanner using b as the input buffer.
// b is not copied and may be modified by the scanner routines.
func makeScanner(b []byte) scanner {
scan := scanner{b: b}
scan.init()
return scan
}
func (s *scanner) init() {
for i, c := range s.b {
if c == '_' {
s.b[i] = '-'
}
}
s.scan()
}
// restToLower converts the string between start and end to lower case.
func (s *scanner) toLower(start, end int) {
for i := start; i < end; i++ {
c := s.b[i]
if 'A' <= c && c <= 'Z' {
s.b[i] += 'a' - 'A'
}
}
}
func (s *scanner) setError(e error) {
if s.err == nil || (e == ErrSyntax && s.err != ErrSyntax) {
s.err = e
}
}
// resizeRange shrinks or grows the array at position oldStart such that
// a new string of size newSize can fit between oldStart and oldEnd.
// Sets the scan point to after the resized range.
func (s *scanner) resizeRange(oldStart, oldEnd, newSize int) {
s.start = oldStart
if end := oldStart + newSize; end != oldEnd {
diff := end - oldEnd
if end < cap(s.b) {
b := make([]byte, len(s.b)+diff)
copy(b, s.b[:oldStart])
copy(b[end:], s.b[oldEnd:])
s.b = b
} else {
s.b = append(s.b[end:], s.b[oldEnd:]...)
}
s.next = end + (s.next - s.end)
s.end = end
}
}
// replace replaces the current token with repl.
func (s *scanner) replace(repl string) {
s.resizeRange(s.start, s.end, len(repl))
copy(s.b[s.start:], repl)
}
// gobble removes the current token from the input.
// Caller must call scan after calling gobble.
func (s *scanner) gobble(e error) {
s.setError(e)
if s.start == 0 {
s.b = s.b[:+copy(s.b, s.b[s.next:])]
s.end = 0
} else {
s.b = s.b[:s.start-1+copy(s.b[s.start-1:], s.b[s.end:])]
s.end = s.start - 1
}
s.next = s.start
}
// deleteRange removes the given range from s.b before the current token.
func (s *scanner) deleteRange(start, end int) {
s.b = s.b[:start+copy(s.b[start:], s.b[end:])]
diff := end - start
s.next -= diff
s.start -= diff
s.end -= diff
}
// scan parses the next token of a BCP 47 string. Tokens that are larger
// than 8 characters or include non-alphanumeric characters result in an error
// and are gobbled and removed from the output.
// It returns the end position of the last token consumed.
func (s *scanner) scan() (end int) {
end = s.end
s.token = nil
for s.start = s.next; s.next < len(s.b); {
i := bytes.IndexByte(s.b[s.next:], '-')
if i == -1 {
s.end = len(s.b)
s.next = len(s.b)
i = s.end - s.start
} else {
s.end = s.next + i
s.next = s.end + 1
}
token := s.b[s.start:s.end]
if i < 1 || i > 8 || !isAlphaNum(token) {
s.gobble(ErrSyntax)
continue
}
s.token = token
return end
}
if n := len(s.b); n > 0 && s.b[n-1] == '-' {
s.setError(ErrSyntax)
s.b = s.b[:len(s.b)-1]
}
s.done = true
return end
}
// acceptMinSize parses multiple tokens of the given size or greater.
// It returns the end position of the last token consumed.
func (s *scanner) acceptMinSize(min int) (end int) {
end = s.end
s.scan()
for ; len(s.token) >= min; s.scan() {
end = s.end
}
return end
}
// Parse parses the given BCP 47 string and returns a valid Tag. If parsing
// failed it returns an error and any part of the tag that could be parsed.
// If parsing succeeded but an unknown value was found, it returns
// ValueError. The Tag returned in this case is just stripped of the unknown
// value. All other values are preserved. It accepts tags in the BCP 47 format
// and extensions to this standard defined in
// http://www.unicode.org/reports/tr35/#Unicode_Language_and_Locale_Identifiers.
func Parse(s string) (t Tag, err error) {
// TODO: consider supporting old-style locale key-value pairs.
if s == "" {
return Und, ErrSyntax
}
if len(s) <= maxAltTaglen {
b := [maxAltTaglen]byte{}
for i, c := range s {
// Generating invalid UTF-8 is okay as it won't match.
if 'A' <= c && c <= 'Z' {
c += 'a' - 'A'
} else if c == '_' {
c = '-'
}
b[i] = byte(c)
}
if t, ok := grandfathered(b); ok {
return t, nil
}
}
scan := makeScannerString(s)
return parse(&scan, s)
}
func parse(scan *scanner, s string) (t Tag, err error) {
t = Und
var end int
if n := len(scan.token); n <= 1 {
scan.toLower(0, len(scan.b))
if n == 0 || scan.token[0] != 'x' {
return t, ErrSyntax
}
end = parseExtensions(scan)
} else if n >= 4 {
return Und, ErrSyntax
} else { // the usual case
t, end = parseTag(scan)
if n := len(scan.token); n == 1 {
t.pExt = uint16(end)
end = parseExtensions(scan)
} else if end < len(scan.b) {
scan.setError(ErrSyntax)
scan.b = scan.b[:end]
}
}
if int(t.pVariant) < len(scan.b) {
if end < len(s) {
s = s[:end]
}
if len(s) > 0 && tag.Compare(s, scan.b) == 0 {
t.str = s
} else {
t.str = string(scan.b)
}
} else {
t.pVariant, t.pExt = 0, 0
}
return t, scan.err
}
// parseTag parses language, script, region and variants.
// It returns a Tag and the end position in the input that was parsed.
func parseTag(scan *scanner) (t Tag, end int) {
var e error
// TODO: set an error if an unknown lang, script or region is encountered.
t.LangID, e = getLangID(scan.token)
scan.setError(e)
scan.replace(t.LangID.String())
langStart := scan.start
end = scan.scan()
for len(scan.token) == 3 && isAlpha(scan.token[0]) {
// From http://tools.ietf.org/html/bcp47, <lang>-<extlang> tags are equivalent
// to a tag of the form <extlang>.
lang, e := getLangID(scan.token)
if lang != 0 {
t.LangID = lang
copy(scan.b[langStart:], lang.String())
scan.b[langStart+3] = '-'
scan.start = langStart + 4
}
scan.gobble(e)
end = scan.scan()
}
if len(scan.token) == 4 && isAlpha(scan.token[0]) {
t.ScriptID, e = getScriptID(script, scan.token)
if t.ScriptID == 0 {
scan.gobble(e)
}
end = scan.scan()
}
if n := len(scan.token); n >= 2 && n <= 3 {
t.RegionID, e = getRegionID(scan.token)
if t.RegionID == 0 {
scan.gobble(e)
} else {
scan.replace(t.RegionID.String())
}
end = scan.scan()
}
scan.toLower(scan.start, len(scan.b))
t.pVariant = byte(end)
end = parseVariants(scan, end, t)
t.pExt = uint16(end)
return t, end
}
var separator = []byte{'-'}
// parseVariants scans tokens as long as each token is a valid variant string.
// Duplicate variants are removed.
func parseVariants(scan *scanner, end int, t Tag) int {
start := scan.start
varIDBuf := [4]uint8{}
variantBuf := [4][]byte{}
varID := varIDBuf[:0]
variant := variantBuf[:0]
last := -1
needSort := false
for ; len(scan.token) >= 4; scan.scan() {
// TODO: measure the impact of needing this conversion and redesign
// the data structure if there is an issue.
v, ok := variantIndex[string(scan.token)]
if !ok {
// unknown variant
// TODO: allow user-defined variants?
scan.gobble(NewValueError(scan.token))
continue
}
varID = append(varID, v)
variant = append(variant, scan.token)
if !needSort {
if last < int(v) {
last = int(v)
} else {
needSort = true
// There is no legal combinations of more than 7 variants
// (and this is by no means a useful sequence).
const maxVariants = 8
if len(varID) > maxVariants {
break
}
}
}
end = scan.end
}
if needSort {
sort.Sort(variantsSort{varID, variant})
k, l := 0, -1
for i, v := range varID {
w := int(v)
if l == w {
// Remove duplicates.
continue
}
varID[k] = varID[i]
variant[k] = variant[i]
k++
l = w
}
if str := bytes.Join(variant[:k], separator); len(str) == 0 {
end = start - 1
} else {
scan.resizeRange(start, end, len(str))
copy(scan.b[scan.start:], str)
end = scan.end
}
}
return end
}
type variantsSort struct {
i []uint8
v [][]byte
}
func (s variantsSort) Len() int {
return len(s.i)
}
func (s variantsSort) Swap(i, j int) {
s.i[i], s.i[j] = s.i[j], s.i[i]
s.v[i], s.v[j] = s.v[j], s.v[i]
}
func (s variantsSort) Less(i, j int) bool {
return s.i[i] < s.i[j]
}
type bytesSort struct {
b [][]byte
n int // first n bytes to compare
}
func (b bytesSort) Len() int {
return len(b.b)
}
func (b bytesSort) Swap(i, j int) {
b.b[i], b.b[j] = b.b[j], b.b[i]
}
func (b bytesSort) Less(i, j int) bool {
for k := 0; k < b.n; k++ {
if b.b[i][k] == b.b[j][k] {
continue
}
return b.b[i][k] < b.b[j][k]
}
return false
}
// parseExtensions parses and normalizes the extensions in the buffer.
// It returns the last position of scan.b that is part of any extension.
// It also trims scan.b to remove excess parts accordingly.
func parseExtensions(scan *scanner) int {
start := scan.start
exts := [][]byte{}
private := []byte{}
end := scan.end
for len(scan.token) == 1 {
extStart := scan.start
ext := scan.token[0]
end = parseExtension(scan)
extension := scan.b[extStart:end]
if len(extension) < 3 || (ext != 'x' && len(extension) < 4) {
scan.setError(ErrSyntax)
end = extStart
continue
} else if start == extStart && (ext == 'x' || scan.start == len(scan.b)) {
scan.b = scan.b[:end]
return end
} else if ext == 'x' {
private = extension
break
}
exts = append(exts, extension)
}
sort.Sort(bytesSort{exts, 1})
if len(private) > 0 {
exts = append(exts, private)
}
scan.b = scan.b[:start]
if len(exts) > 0 {
scan.b = append(scan.b, bytes.Join(exts, separator)...)
} else if start > 0 {
// Strip trailing '-'.
scan.b = scan.b[:start-1]
}
return end
}
// parseExtension parses a single extension and returns the position of
// the extension end.
func parseExtension(scan *scanner) int {
start, end := scan.start, scan.end
switch scan.token[0] {
case 'u':
attrStart := end
scan.scan()
for last := []byte{}; len(scan.token) > 2; scan.scan() {
if bytes.Compare(scan.token, last) != -1 {
// Attributes are unsorted. Start over from scratch.
p := attrStart + 1
scan.next = p
attrs := [][]byte{}
for scan.scan(); len(scan.token) > 2; scan.scan() {
attrs = append(attrs, scan.token)
end = scan.end
}
sort.Sort(bytesSort{attrs, 3})
copy(scan.b[p:], bytes.Join(attrs, separator))
break
}
last = scan.token
end = scan.end
}
var last, key []byte
for attrEnd := end; len(scan.token) == 2; last = key {
key = scan.token
keyEnd := scan.end
end = scan.acceptMinSize(3)
// TODO: check key value validity
if keyEnd == end || bytes.Compare(key, last) != 1 {
// We have an invalid key or the keys are not sorted.
// Start scanning keys from scratch and reorder.
p := attrEnd + 1
scan.next = p
keys := [][]byte{}
for scan.scan(); len(scan.token) == 2; {
keyStart, keyEnd := scan.start, scan.end
end = scan.acceptMinSize(3)
if keyEnd != end {
keys = append(keys, scan.b[keyStart:end])
} else {
scan.setError(ErrSyntax)
end = keyStart
}
}
sort.Stable(bytesSort{keys, 2})
if n := len(keys); n > 0 {
k := 0
for i := 1; i < n; i++ {
if !bytes.Equal(keys[k][:2], keys[i][:2]) {
k++
keys[k] = keys[i]
} else if !bytes.Equal(keys[k], keys[i]) {
scan.setError(ErrDuplicateKey)
}
}
keys = keys[:k+1]
}
reordered := bytes.Join(keys, separator)
if e := p + len(reordered); e < end {
scan.deleteRange(e, end)
end = e
}
copy(scan.b[p:], reordered)
break
}
}
case 't':
scan.scan()
if n := len(scan.token); n >= 2 && n <= 3 && isAlpha(scan.token[1]) {
_, end = parseTag(scan)
scan.toLower(start, end)
}
for len(scan.token) == 2 && !isAlpha(scan.token[1]) {
end = scan.acceptMinSize(3)
}
case 'x':
end = scan.acceptMinSize(1)
default:
end = scan.acceptMinSize(2)
}
return end
}
// getExtension returns the name, body and end position of the extension.
func getExtension(s string, p int) (end int, ext string) {
if s[p] == '-' {
p++
}
if s[p] == 'x' {
return len(s), s[p:]
}
end = nextExtension(s, p)
return end, s[p:end]
}
// nextExtension finds the next extension within the string, searching
// for the -<char>- pattern from position p.
// In the fast majority of cases, language tags will have at most
// one extension and extensions tend to be small.
func nextExtension(s string, p int) int {
for n := len(s) - 3; p < n; {
if s[p] == '-' {
if s[p+2] == '-' {
return p
}
p += 3
} else {
p++
}
}
return len(s)
}

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vendor/golang.org/x/text/internal/language/tables.go generated vendored
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48
vendor/golang.org/x/text/internal/language/tags.go generated vendored
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@ -1,48 +0,0 @@
// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package language
// MustParse is like Parse, but panics if the given BCP 47 tag cannot be parsed.
// It simplifies safe initialization of Tag values.
func MustParse(s string) Tag {
t, err := Parse(s)
if err != nil {
panic(err)
}
return t
}
// MustParseBase is like ParseBase, but panics if the given base cannot be parsed.
// It simplifies safe initialization of Base values.
func MustParseBase(s string) Language {
b, err := ParseBase(s)
if err != nil {
panic(err)
}
return b
}
// MustParseScript is like ParseScript, but panics if the given script cannot be
// parsed. It simplifies safe initialization of Script values.
func MustParseScript(s string) Script {
scr, err := ParseScript(s)
if err != nil {
panic(err)
}
return scr
}
// MustParseRegion is like ParseRegion, but panics if the given region cannot be
// parsed. It simplifies safe initialization of Region values.
func MustParseRegion(s string) Region {
r, err := ParseRegion(s)
if err != nil {
panic(err)
}
return r
}
// Und is the root language.
var Und Tag

27
vendor/golang.org/x/text/internal/tag/LICENSE generated vendored
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@ -1,27 +0,0 @@
Copyright (c) 2009 The Go Authors. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above
copyright notice, this list of conditions and the following disclaimer
in the documentation and/or other materials provided with the
distribution.
* Neither the name of Google Inc. nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

100
vendor/golang.org/x/text/internal/tag/tag.go generated vendored
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@ -1,100 +0,0 @@
// Copyright 2015 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Package tag contains functionality handling tags and related data.
package tag // import "golang.org/x/text/internal/tag"
import "sort"
// An Index converts tags to a compact numeric value.
//
// All elements are of size 4. Tags may be up to 4 bytes long. Excess bytes can
// be used to store additional information about the tag.
type Index string
// Elem returns the element data at the given index.
func (s Index) Elem(x int) string {
return string(s[x*4 : x*4+4])
}
// Index reports the index of the given key or -1 if it could not be found.
// Only the first len(key) bytes from the start of the 4-byte entries will be
// considered for the search and the first match in Index will be returned.
func (s Index) Index(key []byte) int {
n := len(key)
// search the index of the first entry with an equal or higher value than
// key in s.
index := sort.Search(len(s)/4, func(i int) bool {
return cmp(s[i*4:i*4+n], key) != -1
})
i := index * 4
if cmp(s[i:i+len(key)], key) != 0 {
return -1
}
return index
}
// Next finds the next occurrence of key after index x, which must have been
// obtained from a call to Index using the same key. It returns x+1 or -1.
func (s Index) Next(key []byte, x int) int {
if x++; x*4 < len(s) && cmp(s[x*4:x*4+len(key)], key) == 0 {
return x
}
return -1
}
// cmp returns an integer comparing a and b lexicographically.
func cmp(a Index, b []byte) int {
n := len(a)
if len(b) < n {
n = len(b)
}
for i, c := range b[:n] {
switch {
case a[i] > c:
return 1
case a[i] < c:
return -1
}
}
switch {
case len(a) < len(b):
return -1
case len(a) > len(b):
return 1
}
return 0
}
// Compare returns an integer comparing a and b lexicographically.
func Compare(a string, b []byte) int {
return cmp(Index(a), b)
}
// FixCase reformats b to the same pattern of cases as form.
// If returns false if string b is malformed.
func FixCase(form string, b []byte) bool {
if len(form) != len(b) {
return false
}
for i, c := range b {
if form[i] <= 'Z' {
if c >= 'a' {
c -= 'z' - 'Z'
}
if c < 'A' || 'Z' < c {
return false
}
} else {
if c <= 'Z' {
c += 'z' - 'Z'
}
if c < 'a' || 'z' < c {
return false
}
}
b[i] = c
}
return true
}

27
vendor/golang.org/x/text/internal/triegen/LICENSE generated vendored
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@ -1,27 +0,0 @@
Copyright (c) 2009 The Go Authors. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above
copyright notice, this list of conditions and the following disclaimer
in the documentation and/or other materials provided with the
distribution.
* Neither the name of Google Inc. nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

58
vendor/golang.org/x/text/internal/triegen/compact.go generated vendored
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@ -1,58 +0,0 @@
// Copyright 2014 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package triegen
// This file defines Compacter and its implementations.
import "io"
// A Compacter generates an alternative, more space-efficient way to store a
// trie value block. A trie value block holds all possible values for the last
// byte of a UTF-8 encoded rune. Excluding ASCII characters, a trie value block
// always has 64 values, as a UTF-8 encoding ends with a byte in [0x80, 0xC0).
type Compacter interface {
// Size returns whether the Compacter could encode the given block as well
// as its size in case it can. len(v) is always 64.
Size(v []uint64) (sz int, ok bool)
// Store stores the block using the Compacter's compression method.
// It returns a handle with which the block can be retrieved.
// len(v) is always 64.
Store(v []uint64) uint32
// Print writes the data structures associated to the given store to w.
Print(w io.Writer) error
// Handler returns the name of a function that gets called during trie
// lookup for blocks generated by the Compacter. The function should be of
// the form func (n uint32, b byte) uint64, where n is the index returned by
// the Compacter's Store method and b is the last byte of the UTF-8
// encoding, where 0x80 <= b < 0xC0, for which to do the lookup in the
// block.
Handler() string
}
// simpleCompacter is the default Compacter used by builder. It implements a
// normal trie block.
type simpleCompacter builder
func (b *simpleCompacter) Size([]uint64) (sz int, ok bool) {
return blockSize * b.ValueSize, true
}
func (b *simpleCompacter) Store(v []uint64) uint32 {
h := uint32(len(b.ValueBlocks) - blockOffset)
b.ValueBlocks = append(b.ValueBlocks, v)
return h
}
func (b *simpleCompacter) Print(io.Writer) error {
// Structures are printed in print.go.
return nil
}
func (b *simpleCompacter) Handler() string {
panic("Handler should be special-cased for this Compacter")
}

251
vendor/golang.org/x/text/internal/triegen/print.go generated vendored
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@ -1,251 +0,0 @@
// Copyright 2014 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package triegen
import (
"bytes"
"fmt"
"io"
"strings"
"text/template"
)
// print writes all the data structures as well as the code necessary to use the
// trie to w.
func (b *builder) print(w io.Writer) error {
b.Stats.NValueEntries = len(b.ValueBlocks) * blockSize
b.Stats.NValueBytes = len(b.ValueBlocks) * blockSize * b.ValueSize
b.Stats.NIndexEntries = len(b.IndexBlocks) * blockSize
b.Stats.NIndexBytes = len(b.IndexBlocks) * blockSize * b.IndexSize
b.Stats.NHandleBytes = len(b.Trie) * 2 * b.IndexSize
// If we only have one root trie, all starter blocks are at position 0 and
// we can access the arrays directly.
if len(b.Trie) == 1 {
// At this point we cannot refer to the generated tables directly.
b.ASCIIBlock = b.Name + "Values"
b.StarterBlock = b.Name + "Index"
} else {
// Otherwise we need to have explicit starter indexes in the trie
// structure.
b.ASCIIBlock = "t.ascii"
b.StarterBlock = "t.utf8Start"
}
b.SourceType = "[]byte"
if err := lookupGen.Execute(w, b); err != nil {
return err
}
b.SourceType = "string"
if err := lookupGen.Execute(w, b); err != nil {
return err
}
if err := trieGen.Execute(w, b); err != nil {
return err
}
for _, c := range b.Compactions {
if err := c.c.Print(w); err != nil {
return err
}
}
return nil
}
func printValues(n int, values []uint64) string {
w := &bytes.Buffer{}
boff := n * blockSize
fmt.Fprintf(w, "\t// Block %#x, offset %#x", n, boff)
var newline bool
for i, v := range values {
if i%6 == 0 {
newline = true
}
if v != 0 {
if newline {
fmt.Fprintf(w, "\n")
newline = false
}
fmt.Fprintf(w, "\t%#02x:%#04x, ", boff+i, v)
}
}
return w.String()
}
func printIndex(b *builder, nr int, n *node) string {
w := &bytes.Buffer{}
boff := nr * blockSize
fmt.Fprintf(w, "\t// Block %#x, offset %#x", nr, boff)
var newline bool
for i, c := range n.children {
if i%8 == 0 {
newline = true
}
if c != nil {
v := b.Compactions[c.index.compaction].Offset + uint32(c.index.index)
if v != 0 {
if newline {
fmt.Fprintf(w, "\n")
newline = false
}
fmt.Fprintf(w, "\t%#02x:%#02x, ", boff+i, v)
}
}
}
return w.String()
}
var (
trieGen = template.Must(template.New("trie").Funcs(template.FuncMap{
"printValues": printValues,
"printIndex": printIndex,
"title": strings.Title,
"dec": func(x int) int { return x - 1 },
"psize": func(n int) string {
return fmt.Sprintf("%d bytes (%.2f KiB)", n, float64(n)/1024)
},
}).Parse(trieTemplate))
lookupGen = template.Must(template.New("lookup").Parse(lookupTemplate))
)
// TODO: consider the return type of lookup. It could be uint64, even if the
// internal value type is smaller. We will have to verify this with the
// performance of unicode/norm, which is very sensitive to such changes.
const trieTemplate = `{{$b := .}}{{$multi := gt (len .Trie) 1}}
// {{.Name}}Trie. Total size: {{psize .Size}}. Checksum: {{printf "%08x" .Checksum}}.
type {{.Name}}Trie struct { {{if $multi}}
ascii []{{.ValueType}} // index for ASCII bytes
utf8Start []{{.IndexType}} // index for UTF-8 bytes >= 0xC0
{{end}}}
func new{{title .Name}}Trie(i int) *{{.Name}}Trie { {{if $multi}}
h := {{.Name}}TrieHandles[i]
return &{{.Name}}Trie{ {{.Name}}Values[uint32(h.ascii)<<6:], {{.Name}}Index[uint32(h.multi)<<6:] }
}
type {{.Name}}TrieHandle struct {
ascii, multi {{.IndexType}}
}
// {{.Name}}TrieHandles: {{len .Trie}} handles, {{.Stats.NHandleBytes}} bytes
var {{.Name}}TrieHandles = [{{len .Trie}}]{{.Name}}TrieHandle{
{{range .Trie}} { {{.ASCIIIndex}}, {{.StarterIndex}} }, // {{printf "%08x" .Checksum}}: {{.Name}}
{{end}}}{{else}}
return &{{.Name}}Trie{}
}
{{end}}
// lookupValue determines the type of block n and looks up the value for b.
func (t *{{.Name}}Trie) lookupValue(n uint32, b byte) {{.ValueType}}{{$last := dec (len .Compactions)}} {
switch { {{range $i, $c := .Compactions}}
{{if eq $i $last}}default{{else}}case n < {{$c.Cutoff}}{{end}}:{{if ne $i 0}}
n -= {{$c.Offset}}{{end}}
return {{print $b.ValueType}}({{$c.Handler}}){{end}}
}
}
// {{.Name}}Values: {{len .ValueBlocks}} blocks, {{.Stats.NValueEntries}} entries, {{.Stats.NValueBytes}} bytes
// The third block is the zero block.
var {{.Name}}Values = [{{.Stats.NValueEntries}}]{{.ValueType}} {
{{range $i, $v := .ValueBlocks}}{{printValues $i $v}}
{{end}}}
// {{.Name}}Index: {{len .IndexBlocks}} blocks, {{.Stats.NIndexEntries}} entries, {{.Stats.NIndexBytes}} bytes
// Block 0 is the zero block.
var {{.Name}}Index = [{{.Stats.NIndexEntries}}]{{.IndexType}} {
{{range $i, $v := .IndexBlocks}}{{printIndex $b $i $v}}
{{end}}}
`
// TODO: consider allowing zero-length strings after evaluating performance with
// unicode/norm.
const lookupTemplate = `
// lookup{{if eq .SourceType "string"}}String{{end}} returns the trie value for the first UTF-8 encoding in s and
// the width in bytes of this encoding. The size will be 0 if s does not
// hold enough bytes to complete the encoding. len(s) must be greater than 0.
func (t *{{.Name}}Trie) lookup{{if eq .SourceType "string"}}String{{end}}(s {{.SourceType}}) (v {{.ValueType}}, sz int) {
c0 := s[0]
switch {
case c0 < 0x80: // is ASCII
return {{.ASCIIBlock}}[c0], 1
case c0 < 0xC2:
return 0, 1 // Illegal UTF-8: not a starter, not ASCII.
case c0 < 0xE0: // 2-byte UTF-8
if len(s) < 2 {
return 0, 0
}
i := {{.StarterBlock}}[c0]
c1 := s[1]
if c1 < 0x80 || 0xC0 <= c1 {
return 0, 1 // Illegal UTF-8: not a continuation byte.
}
return t.lookupValue(uint32(i), c1), 2
case c0 < 0xF0: // 3-byte UTF-8
if len(s) < 3 {
return 0, 0
}
i := {{.StarterBlock}}[c0]
c1 := s[1]
if c1 < 0x80 || 0xC0 <= c1 {
return 0, 1 // Illegal UTF-8: not a continuation byte.
}
o := uint32(i)<<6 + uint32(c1)
i = {{.Name}}Index[o]
c2 := s[2]
if c2 < 0x80 || 0xC0 <= c2 {
return 0, 2 // Illegal UTF-8: not a continuation byte.
}
return t.lookupValue(uint32(i), c2), 3
case c0 < 0xF8: // 4-byte UTF-8
if len(s) < 4 {
return 0, 0
}
i := {{.StarterBlock}}[c0]
c1 := s[1]
if c1 < 0x80 || 0xC0 <= c1 {
return 0, 1 // Illegal UTF-8: not a continuation byte.
}
o := uint32(i)<<6 + uint32(c1)
i = {{.Name}}Index[o]
c2 := s[2]
if c2 < 0x80 || 0xC0 <= c2 {
return 0, 2 // Illegal UTF-8: not a continuation byte.
}
o = uint32(i)<<6 + uint32(c2)
i = {{.Name}}Index[o]
c3 := s[3]
if c3 < 0x80 || 0xC0 <= c3 {
return 0, 3 // Illegal UTF-8: not a continuation byte.
}
return t.lookupValue(uint32(i), c3), 4
}
// Illegal rune
return 0, 1
}
// lookup{{if eq .SourceType "string"}}String{{end}}Unsafe returns the trie value for the first UTF-8 encoding in s.
// s must start with a full and valid UTF-8 encoded rune.
func (t *{{.Name}}Trie) lookup{{if eq .SourceType "string"}}String{{end}}Unsafe(s {{.SourceType}}) {{.ValueType}} {
c0 := s[0]
if c0 < 0x80 { // is ASCII
return {{.ASCIIBlock}}[c0]
}
i := {{.StarterBlock}}[c0]
if c0 < 0xE0 { // 2-byte UTF-8
return t.lookupValue(uint32(i), s[1])
}
i = {{.Name}}Index[uint32(i)<<6+uint32(s[1])]
if c0 < 0xF0 { // 3-byte UTF-8
return t.lookupValue(uint32(i), s[2])
}
i = {{.Name}}Index[uint32(i)<<6+uint32(s[2])]
if c0 < 0xF8 { // 4-byte UTF-8
return t.lookupValue(uint32(i), s[3])
}
return 0
}
`

494
vendor/golang.org/x/text/internal/triegen/triegen.go generated vendored
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@ -1,494 +0,0 @@
// Copyright 2014 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Package triegen implements a code generator for a trie for associating
// unsigned integer values with UTF-8 encoded runes.
//
// Many of the go.text packages use tries for storing per-rune information. A
// trie is especially useful if many of the runes have the same value. If this
// is the case, many blocks can be expected to be shared allowing for
// information on many runes to be stored in little space.
//
// As most of the lookups are done directly on []byte slices, the tries use the
// UTF-8 bytes directly for the lookup. This saves a conversion from UTF-8 to
// runes and contributes a little bit to better performance. It also naturally
// provides a fast path for ASCII.
//
// Space is also an issue. There are many code points defined in Unicode and as
// a result tables can get quite large. So every byte counts. The triegen
// package automatically chooses the smallest integer values to represent the
// tables. Compacters allow further compression of the trie by allowing for
// alternative representations of individual trie blocks.
//
// triegen allows generating multiple tries as a single structure. This is
// useful when, for example, one wants to generate tries for several languages
// that have a lot of values in common. Some existing libraries for
// internationalization store all per-language data as a dynamically loadable
// chunk. The go.text packages are designed with the assumption that the user
// typically wants to compile in support for all supported languages, in line
// with the approach common to Go to create a single standalone binary. The
// multi-root trie approach can give significant storage savings in this
// scenario.
//
// triegen generates both tables and code. The code is optimized to use the
// automatically chosen data types. The following code is generated for a Trie
// or multiple Tries named "foo":
// - type fooTrie
// The trie type.
//
// - func newFooTrie(x int) *fooTrie
// Trie constructor, where x is the index of the trie passed to Gen.
//
// - func (t *fooTrie) lookup(s []byte) (v uintX, sz int)
// The lookup method, where uintX is automatically chosen.
//
// - func lookupString, lookupUnsafe and lookupStringUnsafe
// Variants of the above.
//
// - var fooValues and fooIndex and any tables generated by Compacters.
// The core trie data.
//
// - var fooTrieHandles
// Indexes of starter blocks in case of multiple trie roots.
//
// It is recommended that users test the generated trie by checking the returned
// value for every rune. Such exhaustive tests are possible as the the number of
// runes in Unicode is limited.
package triegen // import "golang.org/x/text/internal/triegen"
// TODO: Arguably, the internally optimized data types would not have to be
// exposed in the generated API. We could also investigate not generating the
// code, but using it through a package. We would have to investigate the impact
// on performance of making such change, though. For packages like unicode/norm,
// small changes like this could tank performance.
import (
"encoding/binary"
"fmt"
"hash/crc64"
"io"
"log"
"unicode/utf8"
)
// builder builds a set of tries for associating values with runes. The set of
// tries can share common index and value blocks.
type builder struct {
Name string
// ValueType is the type of the trie values looked up.
ValueType string
// ValueSize is the byte size of the ValueType.
ValueSize int
// IndexType is the type of trie index values used for all UTF-8 bytes of
// a rune except the last one.
IndexType string
// IndexSize is the byte size of the IndexType.
IndexSize int
// SourceType is used when generating the lookup functions. If the user
// requests StringSupport, all lookup functions will be generated for
// string input as well.
SourceType string
Trie []*Trie
IndexBlocks []*node
ValueBlocks [][]uint64
Compactions []compaction
Checksum uint64
ASCIIBlock string
StarterBlock string
indexBlockIdx map[uint64]int
valueBlockIdx map[uint64]nodeIndex
asciiBlockIdx map[uint64]int
// Stats are used to fill out the template.
Stats struct {
NValueEntries int
NValueBytes int
NIndexEntries int
NIndexBytes int
NHandleBytes int
}
err error
}
// A nodeIndex encodes the index of a node, which is defined by the compaction
// which stores it and an index within the compaction. For internal nodes, the
// compaction is always 0.
type nodeIndex struct {
compaction int
index int
}
// compaction keeps track of stats used for the compaction.
type compaction struct {
c Compacter
blocks []*node
maxHandle uint32
totalSize int
// Used by template-based generator and thus exported.
Cutoff uint32
Offset uint32
Handler string
}
func (b *builder) setError(err error) {
if b.err == nil {
b.err = err
}
}
// An Option can be passed to Gen.
type Option func(b *builder) error
// Compact configures the trie generator to use the given Compacter.
func Compact(c Compacter) Option {
return func(b *builder) error {
b.Compactions = append(b.Compactions, compaction{
c: c,
Handler: c.Handler() + "(n, b)"})
return nil
}
}
// Gen writes Go code for a shared trie lookup structure to w for the given
// Tries. The generated trie type will be called nameTrie. newNameTrie(x) will
// return the *nameTrie for tries[x]. A value can be looked up by using one of
// the various lookup methods defined on nameTrie. It returns the table size of
// the generated trie.
func Gen(w io.Writer, name string, tries []*Trie, opts ...Option) (sz int, err error) {
// The index contains two dummy blocks, followed by the zero block. The zero
// block is at offset 0x80, so that the offset for the zero block for
// continuation bytes is 0.
b := &builder{
Name: name,
Trie: tries,
IndexBlocks: []*node{{}, {}, {}},
Compactions: []compaction{{
Handler: name + "Values[n<<6+uint32(b)]",
}},
// The 0 key in indexBlockIdx and valueBlockIdx is the hash of the zero
// block.
indexBlockIdx: map[uint64]int{0: 0},
valueBlockIdx: map[uint64]nodeIndex{0: {}},
asciiBlockIdx: map[uint64]int{},
}
b.Compactions[0].c = (*simpleCompacter)(b)
for _, f := range opts {
if err := f(b); err != nil {
return 0, err
}
}
b.build()
if b.err != nil {
return 0, b.err
}
if err = b.print(w); err != nil {
return 0, err
}
return b.Size(), nil
}
// A Trie represents a single root node of a trie. A builder may build several
// overlapping tries at once.
type Trie struct {
root *node
hiddenTrie
}
// hiddenTrie contains values we want to be visible to the template generator,
// but hidden from the API documentation.
type hiddenTrie struct {
Name string
Checksum uint64
ASCIIIndex int
StarterIndex int
}
// NewTrie returns a new trie root.
func NewTrie(name string) *Trie {
return &Trie{
&node{
children: make([]*node, blockSize),
values: make([]uint64, utf8.RuneSelf),
},
hiddenTrie{Name: name},
}
}
// Gen is a convenience wrapper around the Gen func passing t as the only trie
// and uses the name passed to NewTrie. It returns the size of the generated
// tables.
func (t *Trie) Gen(w io.Writer, opts ...Option) (sz int, err error) {
return Gen(w, t.Name, []*Trie{t}, opts...)
}
// node is a node of the intermediate trie structure.
type node struct {
// children holds this node's children. It is always of length 64.
// A child node may be nil.
children []*node
// values contains the values of this node. If it is non-nil, this node is
// either a root or leaf node:
// For root nodes, len(values) == 128 and it maps the bytes in [0x00, 0x7F].
// For leaf nodes, len(values) == 64 and it maps the bytes in [0x80, 0xBF].
values []uint64
index nodeIndex
}
// Insert associates value with the given rune. Insert will panic if a non-zero
// value is passed for an invalid rune.
func (t *Trie) Insert(r rune, value uint64) {
if value == 0 {
return
}
s := string(r)
if []rune(s)[0] != r && value != 0 {
// Note: The UCD tables will always assign what amounts to a zero value
// to a surrogate. Allowing a zero value for an illegal rune allows
// users to iterate over [0..MaxRune] without having to explicitly
// exclude surrogates, which would be tedious.
panic(fmt.Sprintf("triegen: non-zero value for invalid rune %U", r))
}
if len(s) == 1 {
// It is a root node value (ASCII).
t.root.values[s[0]] = value
return
}
n := t.root
for ; len(s) > 1; s = s[1:] {
if n.children == nil {
n.children = make([]*node, blockSize)
}
p := s[0] % blockSize
c := n.children[p]
if c == nil {
c = &node{}
n.children[p] = c
}
if len(s) > 2 && c.values != nil {
log.Fatalf("triegen: insert(%U): found internal node with values", r)
}
n = c
}
if n.values == nil {
n.values = make([]uint64, blockSize)
}
if n.children != nil {
log.Fatalf("triegen: insert(%U): found leaf node that also has child nodes", r)
}
n.values[s[0]-0x80] = value
}
// Size returns the number of bytes the generated trie will take to store. It
// needs to be exported as it is used in the templates.
func (b *builder) Size() int {
// Index blocks.
sz := len(b.IndexBlocks) * blockSize * b.IndexSize
// Skip the first compaction, which represents the normal value blocks, as
// its totalSize does not account for the ASCII blocks, which are managed
// separately.
sz += len(b.ValueBlocks) * blockSize * b.ValueSize
for _, c := range b.Compactions[1:] {
sz += c.totalSize
}
// TODO: this computation does not account for the fixed overhead of a using
// a compaction, either code or data. As for data, though, the typical
// overhead of data is in the order of bytes (2 bytes for cases). Further,
// the savings of using a compaction should anyway be substantial for it to
// be worth it.
// For multi-root tries, we also need to account for the handles.
if len(b.Trie) > 1 {
sz += 2 * b.IndexSize * len(b.Trie)
}
return sz
}
func (b *builder) build() {
// Compute the sizes of the values.
var vmax uint64
for _, t := range b.Trie {
vmax = maxValue(t.root, vmax)
}
b.ValueType, b.ValueSize = getIntType(vmax)
// Compute all block allocations.
// TODO: first compute the ASCII blocks for all tries and then the other
// nodes. ASCII blocks are more restricted in placement, as they require two
// blocks to be placed consecutively. Processing them first may improve
// sharing (at least one zero block can be expected to be saved.)
for _, t := range b.Trie {
b.Checksum += b.buildTrie(t)
}
// Compute the offsets for all the Compacters.
offset := uint32(0)
for i := range b.Compactions {
c := &b.Compactions[i]
c.Offset = offset
offset += c.maxHandle + 1
c.Cutoff = offset
}
// Compute the sizes of indexes.
// TODO: different byte positions could have different sizes. So far we have
// not found a case where this is beneficial.
imax := uint64(b.Compactions[len(b.Compactions)-1].Cutoff)
for _, ib := range b.IndexBlocks {
if x := uint64(ib.index.index); x > imax {
imax = x
}
}
b.IndexType, b.IndexSize = getIntType(imax)
}
func maxValue(n *node, max uint64) uint64 {
if n == nil {
return max
}
for _, c := range n.children {
max = maxValue(c, max)
}
for _, v := range n.values {
if max < v {
max = v
}
}
return max
}
func getIntType(v uint64) (string, int) {
switch {
case v < 1<<8:
return "uint8", 1
case v < 1<<16:
return "uint16", 2
case v < 1<<32:
return "uint32", 4
}
return "uint64", 8
}
const (
blockSize = 64
// Subtract two blocks to offset 0x80, the first continuation byte.
blockOffset = 2
// Subtract three blocks to offset 0xC0, the first non-ASCII starter.
rootBlockOffset = 3
)
var crcTable = crc64.MakeTable(crc64.ISO)
func (b *builder) buildTrie(t *Trie) uint64 {
n := t.root
// Get the ASCII offset. For the first trie, the ASCII block will be at
// position 0.
hasher := crc64.New(crcTable)
binary.Write(hasher, binary.BigEndian, n.values)
hash := hasher.Sum64()
v, ok := b.asciiBlockIdx[hash]
if !ok {
v = len(b.ValueBlocks)
b.asciiBlockIdx[hash] = v
b.ValueBlocks = append(b.ValueBlocks, n.values[:blockSize], n.values[blockSize:])
if v == 0 {
// Add the zero block at position 2 so that it will be assigned a
// zero reference in the lookup blocks.
// TODO: always do this? This would allow us to remove a check from
// the trie lookup, but at the expense of extra space. Analyze
// performance for unicode/norm.
b.ValueBlocks = append(b.ValueBlocks, make([]uint64, blockSize))
}
}
t.ASCIIIndex = v
// Compute remaining offsets.
t.Checksum = b.computeOffsets(n, true)
// We already subtracted the normal blockOffset from the index. Subtract the
// difference for starter bytes.
t.StarterIndex = n.index.index - (rootBlockOffset - blockOffset)
return t.Checksum
}
func (b *builder) computeOffsets(n *node, root bool) uint64 {
// For the first trie, the root lookup block will be at position 3, which is
// the offset for UTF-8 non-ASCII starter bytes.
first := len(b.IndexBlocks) == rootBlockOffset
if first {
b.IndexBlocks = append(b.IndexBlocks, n)
}
// We special-case the cases where all values recursively are 0. This allows
// for the use of a zero block to which all such values can be directed.
hash := uint64(0)
if n.children != nil || n.values != nil {
hasher := crc64.New(crcTable)
for _, c := range n.children {
var v uint64
if c != nil {
v = b.computeOffsets(c, false)
}
binary.Write(hasher, binary.BigEndian, v)
}
binary.Write(hasher, binary.BigEndian, n.values)
hash = hasher.Sum64()
}
if first {
b.indexBlockIdx[hash] = rootBlockOffset - blockOffset
}
// Compacters don't apply to internal nodes.
if n.children != nil {
v, ok := b.indexBlockIdx[hash]
if !ok {
v = len(b.IndexBlocks) - blockOffset
b.IndexBlocks = append(b.IndexBlocks, n)
b.indexBlockIdx[hash] = v
}
n.index = nodeIndex{0, v}
} else {
h, ok := b.valueBlockIdx[hash]
if !ok {
bestI, bestSize := 0, blockSize*b.ValueSize
for i, c := range b.Compactions[1:] {
if sz, ok := c.c.Size(n.values); ok && bestSize > sz {
bestI, bestSize = i+1, sz
}
}
c := &b.Compactions[bestI]
c.totalSize += bestSize
v := c.c.Store(n.values)
if c.maxHandle < v {
c.maxHandle = v
}
h = nodeIndex{bestI, int(v)}
b.valueBlockIdx[hash] = h
}
n.index = h
}
return hash
}

27
vendor/golang.org/x/text/internal/ucd/LICENSE generated vendored
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@ -1,27 +0,0 @@
Copyright (c) 2009 The Go Authors. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above
copyright notice, this list of conditions and the following disclaimer
in the documentation and/or other materials provided with the
distribution.
* Neither the name of Google Inc. nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

371
vendor/golang.org/x/text/internal/ucd/ucd.go generated vendored
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@ -1,371 +0,0 @@
// Copyright 2014 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Package ucd provides a parser for Unicode Character Database files, the
// format of which is defined in http://www.unicode.org/reports/tr44/. See
// http://www.unicode.org/Public/UCD/latest/ucd/ for example files.
//
// It currently does not support substitutions of missing fields.
package ucd // import "golang.org/x/text/internal/ucd"
import (
"bufio"
"errors"
"fmt"
"io"
"log"
"regexp"
"strconv"
"strings"
)
// UnicodeData.txt fields.
const (
CodePoint = iota
Name
GeneralCategory
CanonicalCombiningClass
BidiClass
DecompMapping
DecimalValue
DigitValue
NumericValue
BidiMirrored
Unicode1Name
ISOComment
SimpleUppercaseMapping
SimpleLowercaseMapping
SimpleTitlecaseMapping
)
// Parse calls f for each entry in the given reader of a UCD file. It will close
// the reader upon return. It will call log.Fatal if any error occurred.
//
// This implements the most common usage pattern of using Parser.
func Parse(r io.ReadCloser, f func(p *Parser)) {
defer r.Close()
p := New(r)
for p.Next() {
f(p)
}
if err := p.Err(); err != nil {
r.Close() // os.Exit will cause defers not to be called.
log.Fatal(err)
}
}
// An Option is used to configure a Parser.
type Option func(p *Parser)
func keepRanges(p *Parser) {
p.keepRanges = true
}
var (
// KeepRanges prevents the expansion of ranges. The raw ranges can be
// obtained by calling Range(0) on the parser.
KeepRanges Option = keepRanges
)
// The Part option register a handler for lines starting with a '@'. The text
// after a '@' is available as the first field. Comments are handled as usual.
func Part(f func(p *Parser)) Option {
return func(p *Parser) {
p.partHandler = f
}
}
// The CommentHandler option passes comments that are on a line by itself to
// a given handler.
func CommentHandler(f func(s string)) Option {
return func(p *Parser) {
p.commentHandler = f
}
}
// A Parser parses Unicode Character Database (UCD) files.
type Parser struct {
scanner *bufio.Scanner
keepRanges bool // Don't expand rune ranges in field 0.
err error
comment string
field []string
// parsedRange is needed in case Range(0) is called more than once for one
// field. In some cases this requires scanning ahead.
line int
parsedRange bool
rangeStart, rangeEnd rune
partHandler func(p *Parser)
commentHandler func(s string)
}
func (p *Parser) setError(err error, msg string) {
if p.err == nil && err != nil {
if msg == "" {
p.err = fmt.Errorf("ucd:line:%d: %v", p.line, err)
} else {
p.err = fmt.Errorf("ucd:line:%d:%s: %v", p.line, msg, err)
}
}
}
func (p *Parser) getField(i int) string {
if i >= len(p.field) {
return ""
}
return p.field[i]
}
// Err returns a non-nil error if any error occurred during parsing.
func (p *Parser) Err() error {
return p.err
}
// New returns a Parser for the given Reader.
func New(r io.Reader, o ...Option) *Parser {
p := &Parser{
scanner: bufio.NewScanner(r),
}
for _, f := range o {
f(p)
}
return p
}
// Next parses the next line in the file. It returns true if a line was parsed
// and false if it reached the end of the file.
func (p *Parser) Next() bool {
if !p.keepRanges && p.rangeStart < p.rangeEnd {
p.rangeStart++
return true
}
p.comment = ""
p.field = p.field[:0]
p.parsedRange = false
for p.scanner.Scan() && p.err == nil {
p.line++
s := p.scanner.Text()
if s == "" {
continue
}
if s[0] == '#' {
if p.commentHandler != nil {
p.commentHandler(strings.TrimSpace(s[1:]))
}
continue
}
// Parse line
if i := strings.IndexByte(s, '#'); i != -1 {
p.comment = strings.TrimSpace(s[i+1:])
s = s[:i]
}
if s[0] == '@' {
if p.partHandler != nil {
p.field = append(p.field, strings.TrimSpace(s[1:]))
p.partHandler(p)
p.field = p.field[:0]
}
p.comment = ""
continue
}
for {
i := strings.IndexByte(s, ';')
if i == -1 {
p.field = append(p.field, strings.TrimSpace(s))
break
}
p.field = append(p.field, strings.TrimSpace(s[:i]))
s = s[i+1:]
}
if !p.keepRanges {
p.rangeStart, p.rangeEnd = p.getRange(0)
}
return true
}
p.setError(p.scanner.Err(), "scanner failed")
return false
}
func parseRune(b string) (rune, error) {
if len(b) > 2 && b[0] == 'U' && b[1] == '+' {
b = b[2:]
}
x, err := strconv.ParseUint(b, 16, 32)
return rune(x), err
}
func (p *Parser) parseRune(s string) rune {
x, err := parseRune(s)
p.setError(err, "failed to parse rune")
return x
}
// Rune parses and returns field i as a rune.
func (p *Parser) Rune(i int) rune {
if i > 0 || p.keepRanges {
return p.parseRune(p.getField(i))
}
return p.rangeStart
}
// Runes interprets and returns field i as a sequence of runes.
func (p *Parser) Runes(i int) (runes []rune) {
add := func(s string) {
if s = strings.TrimSpace(s); len(s) > 0 {
runes = append(runes, p.parseRune(s))
}
}
for b := p.getField(i); ; {
i := strings.IndexByte(b, ' ')
if i == -1 {
add(b)
break
}
add(b[:i])
b = b[i+1:]
}
return
}
var (
errIncorrectLegacyRange = errors.New("ucd: unmatched <* First>")
// reRange matches one line of a legacy rune range.
reRange = regexp.MustCompile("^([0-9A-F]*);<([^,]*), ([^>]*)>(.*)$")
)
// Range parses and returns field i as a rune range. A range is inclusive at
// both ends. If the field only has one rune, first and last will be identical.
// It supports the legacy format for ranges used in UnicodeData.txt.
func (p *Parser) Range(i int) (first, last rune) {
if !p.keepRanges {
return p.rangeStart, p.rangeStart
}
return p.getRange(i)
}
func (p *Parser) getRange(i int) (first, last rune) {
b := p.getField(i)
if k := strings.Index(b, ".."); k != -1 {
return p.parseRune(b[:k]), p.parseRune(b[k+2:])
}
// The first field may not be a rune, in which case we may ignore any error
// and set the range as 0..0.
x, err := parseRune(b)
if err != nil {
// Disable range parsing henceforth. This ensures that an error will be
// returned if the user subsequently will try to parse this field as
// a Rune.
p.keepRanges = true
}
// Special case for UnicodeData that was retained for backwards compatibility.
if i == 0 && len(p.field) > 1 && strings.HasSuffix(p.field[1], "First>") {
if p.parsedRange {
return p.rangeStart, p.rangeEnd
}
mf := reRange.FindStringSubmatch(p.scanner.Text())
p.line++
if mf == nil || !p.scanner.Scan() {
p.setError(errIncorrectLegacyRange, "")
return x, x
}
// Using Bytes would be more efficient here, but Text is a lot easier
// and this is not a frequent case.
ml := reRange.FindStringSubmatch(p.scanner.Text())
if ml == nil || mf[2] != ml[2] || ml[3] != "Last" || mf[4] != ml[4] {
p.setError(errIncorrectLegacyRange, "")
return x, x
}
p.rangeStart, p.rangeEnd = x, p.parseRune(p.scanner.Text()[:len(ml[1])])
p.parsedRange = true
return p.rangeStart, p.rangeEnd
}
return x, x
}
// bools recognizes all valid UCD boolean values.
var bools = map[string]bool{
"": false,
"N": false,
"No": false,
"F": false,
"False": false,
"Y": true,
"Yes": true,
"T": true,
"True": true,
}
// Bool parses and returns field i as a boolean value.
func (p *Parser) Bool(i int) bool {
f := p.getField(i)
for s, v := range bools {
if f == s {
return v
}
}
p.setError(strconv.ErrSyntax, "error parsing bool")
return false
}
// Int parses and returns field i as an integer value.
func (p *Parser) Int(i int) int {
x, err := strconv.ParseInt(string(p.getField(i)), 10, 64)
p.setError(err, "error parsing int")
return int(x)
}
// Uint parses and returns field i as an unsigned integer value.
func (p *Parser) Uint(i int) uint {
x, err := strconv.ParseUint(string(p.getField(i)), 10, 64)
p.setError(err, "error parsing uint")
return uint(x)
}
// Float parses and returns field i as a decimal value.
func (p *Parser) Float(i int) float64 {
x, err := strconv.ParseFloat(string(p.getField(i)), 64)
p.setError(err, "error parsing float")
return x
}
// String parses and returns field i as a string value.
func (p *Parser) String(i int) string {
return string(p.getField(i))
}
// Strings parses and returns field i as a space-separated list of strings.
func (p *Parser) Strings(i int) []string {
ss := strings.Split(string(p.getField(i)), " ")
for i, s := range ss {
ss[i] = strings.TrimSpace(s)
}
return ss
}
// Comment returns the comments for the current line.
func (p *Parser) Comment() string {
return string(p.comment)
}
var errUndefinedEnum = errors.New("ucd: undefined enum value")
// Enum interprets and returns field i as a value that must be one of the values
// in enum.
func (p *Parser) Enum(i int, enum ...string) string {
f := p.getField(i)
for _, s := range enum {
if f == s {
return s
}
}
p.setError(errUndefinedEnum, "error parsing enum")
return ""
}

27
vendor/golang.org/x/text/internal/utf8internal/LICENSE generated vendored
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@ -1,27 +0,0 @@
Copyright (c) 2009 The Go Authors. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above
copyright notice, this list of conditions and the following disclaimer
in the documentation and/or other materials provided with the
distribution.
* Neither the name of Google Inc. nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

87
vendor/golang.org/x/text/internal/utf8internal/utf8internal.go generated vendored
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@ -1,87 +0,0 @@
// Copyright 2015 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Package utf8internal contains low-level utf8-related constants, tables, etc.
// that are used internally by the text package.
package utf8internal
// The default lowest and highest continuation byte.
const (
LoCB = 0x80 // 1000 0000
HiCB = 0xBF // 1011 1111
)
// Constants related to getting information of first bytes of UTF-8 sequences.
const (
// ASCII identifies a UTF-8 byte as ASCII.
ASCII = as
// FirstInvalid indicates a byte is invalid as a first byte of a UTF-8
// sequence.
FirstInvalid = xx
// SizeMask is a mask for the size bits. Use use x&SizeMask to get the size.
SizeMask = 7
// AcceptShift is the right-shift count for the first byte info byte to get
// the index into the AcceptRanges table. See AcceptRanges.
AcceptShift = 4
// The names of these constants are chosen to give nice alignment in the
// table below. The first nibble is an index into acceptRanges or F for
// special one-byte cases. The second nibble is the Rune length or the
// Status for the special one-byte case.
xx = 0xF1 // invalid: size 1
as = 0xF0 // ASCII: size 1
s1 = 0x02 // accept 0, size 2
s2 = 0x13 // accept 1, size 3
s3 = 0x03 // accept 0, size 3
s4 = 0x23 // accept 2, size 3
s5 = 0x34 // accept 3, size 4
s6 = 0x04 // accept 0, size 4
s7 = 0x44 // accept 4, size 4
)
// First is information about the first byte in a UTF-8 sequence.
var First = [256]uint8{
// 1 2 3 4 5 6 7 8 9 A B C D E F
as, as, as, as, as, as, as, as, as, as, as, as, as, as, as, as, // 0x00-0x0F
as, as, as, as, as, as, as, as, as, as, as, as, as, as, as, as, // 0x10-0x1F
as, as, as, as, as, as, as, as, as, as, as, as, as, as, as, as, // 0x20-0x2F
as, as, as, as, as, as, as, as, as, as, as, as, as, as, as, as, // 0x30-0x3F
as, as, as, as, as, as, as, as, as, as, as, as, as, as, as, as, // 0x40-0x4F
as, as, as, as, as, as, as, as, as, as, as, as, as, as, as, as, // 0x50-0x5F
as, as, as, as, as, as, as, as, as, as, as, as, as, as, as, as, // 0x60-0x6F
as, as, as, as, as, as, as, as, as, as, as, as, as, as, as, as, // 0x70-0x7F
// 1 2 3 4 5 6 7 8 9 A B C D E F
xx, xx, xx, xx, xx, xx, xx, xx, xx, xx, xx, xx, xx, xx, xx, xx, // 0x80-0x8F
xx, xx, xx, xx, xx, xx, xx, xx, xx, xx, xx, xx, xx, xx, xx, xx, // 0x90-0x9F
xx, xx, xx, xx, xx, xx, xx, xx, xx, xx, xx, xx, xx, xx, xx, xx, // 0xA0-0xAF
xx, xx, xx, xx, xx, xx, xx, xx, xx, xx, xx, xx, xx, xx, xx, xx, // 0xB0-0xBF
xx, xx, s1, s1, s1, s1, s1, s1, s1, s1, s1, s1, s1, s1, s1, s1, // 0xC0-0xCF
s1, s1, s1, s1, s1, s1, s1, s1, s1, s1, s1, s1, s1, s1, s1, s1, // 0xD0-0xDF
s2, s3, s3, s3, s3, s3, s3, s3, s3, s3, s3, s3, s3, s4, s3, s3, // 0xE0-0xEF
s5, s6, s6, s6, s7, xx, xx, xx, xx, xx, xx, xx, xx, xx, xx, xx, // 0xF0-0xFF
}
// AcceptRange gives the range of valid values for the second byte in a UTF-8
// sequence for any value for First that is not ASCII or FirstInvalid.
type AcceptRange struct {
Lo uint8 // lowest value for second byte.
Hi uint8 // highest value for second byte.
}
// AcceptRanges is a slice of AcceptRange values. For a given byte sequence b
//
// AcceptRanges[First[b[0]]>>AcceptShift]
//
// will give the value of AcceptRange for the multi-byte UTF-8 sequence starting
// at b[0].
var AcceptRanges = [...]AcceptRange{
0: {LoCB, HiCB},
1: {0xA0, HiCB},
2: {LoCB, 0x9F},
3: {0x90, HiCB},
4: {LoCB, 0x8F},
}

27
vendor/golang.org/x/text/language/LICENSE generated vendored
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@ -1,27 +0,0 @@
Copyright (c) 2009 The Go Authors. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above
copyright notice, this list of conditions and the following disclaimer
in the documentation and/or other materials provided with the
distribution.
* Neither the name of Google Inc. nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

187
vendor/golang.org/x/text/language/coverage.go generated vendored
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@ -1,187 +0,0 @@
// Copyright 2014 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package language
import (
"fmt"
"sort"
"golang.org/x/text/internal/language"
)
// The Coverage interface is used to define the level of coverage of an
// internationalization service. Note that not all types are supported by all
// services. As lists may be generated on the fly, it is recommended that users
// of a Coverage cache the results.
type Coverage interface {
// Tags returns the list of supported tags.
Tags() []Tag
// BaseLanguages returns the list of supported base languages.
BaseLanguages() []Base
// Scripts returns the list of supported scripts.
Scripts() []Script
// Regions returns the list of supported regions.
Regions() []Region
}
var (
// Supported defines a Coverage that lists all supported subtags. Tags
// always returns nil.
Supported Coverage = allSubtags{}
)
// TODO:
// - Support Variants, numbering systems.
// - CLDR coverage levels.
// - Set of common tags defined in this package.
type allSubtags struct{}
// Regions returns the list of supported regions. As all regions are in a
// consecutive range, it simply returns a slice of numbers in increasing order.
// The "undefined" region is not returned.
func (s allSubtags) Regions() []Region {
reg := make([]Region, language.NumRegions)
for i := range reg {
reg[i] = Region{language.Region(i + 1)}
}
return reg
}
// Scripts returns the list of supported scripts. As all scripts are in a
// consecutive range, it simply returns a slice of numbers in increasing order.
// The "undefined" script is not returned.
func (s allSubtags) Scripts() []Script {
scr := make([]Script, language.NumScripts)
for i := range scr {
scr[i] = Script{language.Script(i + 1)}
}
return scr
}
// BaseLanguages returns the list of all supported base languages. It generates
// the list by traversing the internal structures.
func (s allSubtags) BaseLanguages() []Base {
bs := language.BaseLanguages()
base := make([]Base, len(bs))
for i, b := range bs {
base[i] = Base{b}
}
return base
}
// Tags always returns nil.
func (s allSubtags) Tags() []Tag {
return nil
}
// coverage is used used by NewCoverage which is used as a convenient way for
// creating Coverage implementations for partially defined data. Very often a
// package will only need to define a subset of slices. coverage provides a
// convenient way to do this. Moreover, packages using NewCoverage, instead of
// their own implementation, will not break if later new slice types are added.
type coverage struct {
tags func() []Tag
bases func() []Base
scripts func() []Script
regions func() []Region
}
func (s *coverage) Tags() []Tag {
if s.tags == nil {
return nil
}
return s.tags()
}
// bases implements sort.Interface and is used to sort base languages.
type bases []Base
func (b bases) Len() int {
return len(b)
}
func (b bases) Swap(i, j int) {
b[i], b[j] = b[j], b[i]
}
func (b bases) Less(i, j int) bool {
return b[i].langID < b[j].langID
}
// BaseLanguages returns the result from calling s.bases if it is specified or
// otherwise derives the set of supported base languages from tags.
func (s *coverage) BaseLanguages() []Base {
if s.bases == nil {
tags := s.Tags()
if len(tags) == 0 {
return nil
}
a := make([]Base, len(tags))
for i, t := range tags {
a[i] = Base{language.Language(t.lang())}
}
sort.Sort(bases(a))
k := 0
for i := 1; i < len(a); i++ {
if a[k] != a[i] {
k++
a[k] = a[i]
}
}
return a[:k+1]
}
return s.bases()
}
func (s *coverage) Scripts() []Script {
if s.scripts == nil {
return nil
}
return s.scripts()
}
func (s *coverage) Regions() []Region {
if s.regions == nil {
return nil
}
return s.regions()
}
// NewCoverage returns a Coverage for the given lists. It is typically used by
// packages providing internationalization services to define their level of
// coverage. A list may be of type []T or func() []T, where T is either Tag,
// Base, Script or Region. The returned Coverage derives the value for Bases
// from Tags if no func or slice for []Base is specified. For other unspecified
// types the returned Coverage will return nil for the respective methods.
func NewCoverage(list ...interface{}) Coverage {
s := &coverage{}
for _, x := range list {
switch v := x.(type) {
case func() []Base:
s.bases = v
case func() []Script:
s.scripts = v
case func() []Region:
s.regions = v
case func() []Tag:
s.tags = v
case []Base:
s.bases = func() []Base { return v }
case []Script:
s.scripts = func() []Script { return v }
case []Region:
s.regions = func() []Region { return v }
case []Tag:
s.tags = func() []Tag { return v }
default:
panic(fmt.Sprintf("language: unsupported set type %T", v))
}
}
return s
}

92
vendor/golang.org/x/text/language/display/dict.go generated vendored
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@ -1,92 +0,0 @@
// Copyright 2014 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package display
// This file contains sets of data for specific languages. Users can use these
// to create smaller collections of supported languages and reduce total table
// size.
// The variable names defined here correspond to those in package language.
var (
Afrikaans *Dictionary = &af // af
Amharic *Dictionary = &am // am
Arabic *Dictionary = &ar // ar
ModernStandardArabic *Dictionary = Arabic // ar-001
Azerbaijani *Dictionary = &az // az
Bulgarian *Dictionary = &bg // bg
Bengali *Dictionary = &bn // bn
Catalan *Dictionary = &ca // ca
Czech *Dictionary = &cs // cs
Danish *Dictionary = &da // da
German *Dictionary = &de // de
Greek *Dictionary = &el // el
English *Dictionary = &en // en
AmericanEnglish *Dictionary = English // en-US
BritishEnglish *Dictionary = English // en-GB
Spanish *Dictionary = &es // es
EuropeanSpanish *Dictionary = Spanish // es-ES
LatinAmericanSpanish *Dictionary = Spanish // es-419
Estonian *Dictionary = &et // et
Persian *Dictionary = &fa // fa
Finnish *Dictionary = &fi // fi
Filipino *Dictionary = &fil // fil
French *Dictionary = &fr // fr
Gujarati *Dictionary = &gu // gu
Hebrew *Dictionary = &he // he
Hindi *Dictionary = &hi // hi
Croatian *Dictionary = &hr // hr
Hungarian *Dictionary = &hu // hu
Armenian *Dictionary = &hy // hy
Indonesian *Dictionary = &id // id
Icelandic *Dictionary = &is // is
Italian *Dictionary = &it // it
Japanese *Dictionary = &ja // ja
Georgian *Dictionary = &ka // ka
Kazakh *Dictionary = &kk // kk
Khmer *Dictionary = &km // km
Kannada *Dictionary = &kn // kn
Korean *Dictionary = &ko // ko
Kirghiz *Dictionary = &ky // ky
Lao *Dictionary = &lo // lo
Lithuanian *Dictionary = &lt // lt
Latvian *Dictionary = &lv // lv
Macedonian *Dictionary = &mk // mk
Malayalam *Dictionary = &ml // ml
Mongolian *Dictionary = &mn // mn
Marathi *Dictionary = &mr // mr
Malay *Dictionary = &ms // ms
Burmese *Dictionary = &my // my
Nepali *Dictionary = &ne // ne
Dutch *Dictionary = &nl // nl
Norwegian *Dictionary = &no // no
Punjabi *Dictionary = &pa // pa
Polish *Dictionary = &pl // pl
Portuguese *Dictionary = &pt // pt
BrazilianPortuguese *Dictionary = Portuguese // pt-BR
EuropeanPortuguese *Dictionary = &ptPT // pt-PT
Romanian *Dictionary = &ro // ro
Russian *Dictionary = &ru // ru
Sinhala *Dictionary = &si // si
Slovak *Dictionary = &sk // sk
Slovenian *Dictionary = &sl // sl
Albanian *Dictionary = &sq // sq
Serbian *Dictionary = &sr // sr
SerbianLatin *Dictionary = &srLatn // sr
Swedish *Dictionary = &sv // sv
Swahili *Dictionary = &sw // sw
Tamil *Dictionary = &ta // ta
Telugu *Dictionary = &te // te
Thai *Dictionary = &th // th
Turkish *Dictionary = &tr // tr
Ukrainian *Dictionary = &uk // uk
Urdu *Dictionary = &ur // ur
Uzbek *Dictionary = &uz // uz
Vietnamese *Dictionary = &vi // vi
Chinese *Dictionary = &zh // zh
SimplifiedChinese *Dictionary = Chinese // zh-Hans
TraditionalChinese *Dictionary = &zhHant // zh-Hant
Zulu *Dictionary = &zu // zu
)

420
vendor/golang.org/x/text/language/display/display.go generated vendored
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@ -1,420 +0,0 @@
// Copyright 2014 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
//go:generate go run maketables.go -output tables.go
// Package display provides display names for languages, scripts and regions in
// a requested language.
//
// The data is based on CLDR's localeDisplayNames. It includes the names of the
// draft level "contributed" or "approved". The resulting tables are quite
// large. The display package is designed so that users can reduce the linked-in
// table sizes by cherry picking the languages one wishes to support. There is a
// Dictionary defined for a selected set of common languages for this purpose.
package display // import "golang.org/x/text/language/display"
import (
"fmt"
"strings"
"golang.org/x/text/internal/format"
"golang.org/x/text/language"
)
/*
TODO:
All fairly low priority at the moment:
- Include alternative and variants as an option (using func options).
- Option for returning the empty string for undefined values.
- Support variants, currencies, time zones, option names and other data
provided in CLDR.
- Do various optimizations:
- Reduce size of offset tables.
- Consider compressing infrequently used languages and decompress on demand.
*/
// A Formatter formats a tag in the current language. It is used in conjunction
// with the message package.
type Formatter struct {
lookup func(tag int, x interface{}) string
x interface{}
}
// Format implements "golang.org/x/text/internal/format".Formatter.
func (f Formatter) Format(state format.State, verb rune) {
// TODO: there are a lot of inefficiencies in this code. Fix it when we
// language.Tag has embedded compact tags.
t := state.Language()
_, index, _ := matcher.Match(t)
str := f.lookup(index, f.x)
if str == "" {
// TODO: use language-specific punctuation.
// TODO: use codePattern instead of language?
if unknown := f.lookup(index, language.Und); unknown != "" {
fmt.Fprintf(state, "%v (%v)", unknown, f.x)
} else {
fmt.Fprintf(state, "[language: %v]", f.x)
}
} else {
state.Write([]byte(str))
}
}
// Language returns a Formatter that renders the name for lang in the
// the current language. x may be a language.Base or a language.Tag.
// It renders lang in the default language if no translation for the current
// language is supported.
func Language(lang interface{}) Formatter {
return Formatter{langFunc, lang}
}
// Region returns a Formatter that renders the name for region in the current
// language. region may be a language.Region or a language.Tag.
// It renders region in the default language if no translation for the current
// language is supported.
func Region(region interface{}) Formatter {
return Formatter{regionFunc, region}
}
// Script returns a Formatter that renders the name for script in the current
// language. script may be a language.Script or a language.Tag.
// It renders script in the default language if no translation for the current
// language is supported.
func Script(script interface{}) Formatter {
return Formatter{scriptFunc, script}
}
// Script returns a Formatter that renders the name for tag in the current
// language. tag may be a language.Tag.
// It renders tag in the default language if no translation for the current
// language is supported.
func Tag(tag interface{}) Formatter {
return Formatter{tagFunc, tag}
}
// A Namer is used to get the name for a given value, such as a Tag, Language,
// Script or Region.
type Namer interface {
// Name returns a display string for the given value. A Namer returns an
// empty string for values it does not support. A Namer may support naming
// an unspecified value. For example, when getting the name for a region for
// a tag that does not have a defined Region, it may return the name for an
// unknown region. It is up to the user to filter calls to Name for values
// for which one does not want to have a name string.
Name(x interface{}) string
}
var (
// Supported lists the languages for which names are defined.
Supported language.Coverage
// The set of all possible values for which names are defined. Note that not
// all Namer implementations will cover all the values of a given type.
// A Namer will return the empty string for unsupported values.
Values language.Coverage
matcher language.Matcher
)
func init() {
tags := make([]language.Tag, numSupported)
s := supported
for i := range tags {
p := strings.IndexByte(s, '|')
tags[i] = language.Raw.Make(s[:p])
s = s[p+1:]
}
matcher = language.NewMatcher(tags)
Supported = language.NewCoverage(tags)
Values = language.NewCoverage(langTagSet.Tags, supportedScripts, supportedRegions)
}
// Languages returns a Namer for naming languages. It returns nil if there is no
// data for the given tag. The type passed to Name must be either language.Base
// or language.Tag. Note that the result may differ between passing a tag or its
// base language. For example, for English, passing "nl-BE" would return Flemish
// whereas passing "nl" returns "Dutch".
func Languages(t language.Tag) Namer {
if _, index, conf := matcher.Match(t); conf != language.No {
return languageNamer(index)
}
return nil
}
type languageNamer int
func langFunc(i int, x interface{}) string {
return nameLanguage(languageNamer(i), x)
}
func (n languageNamer) name(i int) string {
return lookup(langHeaders[:], int(n), i)
}
// Name implements the Namer interface for language names.
func (n languageNamer) Name(x interface{}) string {
return nameLanguage(n, x)
}
// nonEmptyIndex walks up the parent chain until a non-empty header is found.
// It returns -1 if no index could be found.
func nonEmptyIndex(h []header, index int) int {
for ; index != -1 && h[index].data == ""; index = int(parents[index]) {
}
return index
}
// Scripts returns a Namer for naming scripts. It returns nil if there is no
// data for the given tag. The type passed to Name must be either a
// language.Script or a language.Tag. It will not attempt to infer a script for
// tags with an unspecified script.
func Scripts(t language.Tag) Namer {
if _, index, conf := matcher.Match(t); conf != language.No {
if index = nonEmptyIndex(scriptHeaders[:], index); index != -1 {
return scriptNamer(index)
}
}
return nil
}
type scriptNamer int
func scriptFunc(i int, x interface{}) string {
return nameScript(scriptNamer(i), x)
}
func (n scriptNamer) name(i int) string {
return lookup(scriptHeaders[:], int(n), i)
}
// Name implements the Namer interface for script names.
func (n scriptNamer) Name(x interface{}) string {
return nameScript(n, x)
}
// Regions returns a Namer for naming regions. It returns nil if there is no
// data for the given tag. The type passed to Name must be either a
// language.Region or a language.Tag. It will not attempt to infer a region for
// tags with an unspecified region.
func Regions(t language.Tag) Namer {
if _, index, conf := matcher.Match(t); conf != language.No {
if index = nonEmptyIndex(regionHeaders[:], index); index != -1 {
return regionNamer(index)
}
}
return nil
}
type regionNamer int
func regionFunc(i int, x interface{}) string {
return nameRegion(regionNamer(i), x)
}
func (n regionNamer) name(i int) string {
return lookup(regionHeaders[:], int(n), i)
}
// Name implements the Namer interface for region names.
func (n regionNamer) Name(x interface{}) string {
return nameRegion(n, x)
}
// Tags returns a Namer for giving a full description of a tag. The names of
// scripts and regions that are not already implied by the language name will
// in appended within parentheses. It returns nil if there is not data for the
// given tag. The type passed to Name must be a tag.
func Tags(t language.Tag) Namer {
if _, index, conf := matcher.Match(t); conf != language.No {
return tagNamer(index)
}
return nil
}
type tagNamer int
func tagFunc(i int, x interface{}) string {
return nameTag(languageNamer(i), scriptNamer(i), regionNamer(i), x)
}
// Name implements the Namer interface for tag names.
func (n tagNamer) Name(x interface{}) string {
return nameTag(languageNamer(n), scriptNamer(n), regionNamer(n), x)
}
// lookup finds the name for an entry in a global table, traversing the
// inheritance hierarchy if needed.
func lookup(table []header, dict, want int) string {
for dict != -1 {
if s := table[dict].name(want); s != "" {
return s
}
dict = int(parents[dict])
}
return ""
}
// A Dictionary holds a collection of Namers for a single language. One can
// reduce the amount of data linked in to a binary by only referencing
// Dictionaries for the languages one needs to support instead of using the
// generic Namer factories.
type Dictionary struct {
parent *Dictionary
lang header
script header
region header
}
// Tags returns a Namer for giving a full description of a tag. The names of
// scripts and regions that are not already implied by the language name will
// in appended within parentheses. It returns nil if there is not data for the
// given tag. The type passed to Name must be a tag.
func (d *Dictionary) Tags() Namer {
return dictTags{d}
}
type dictTags struct {
d *Dictionary
}
// Name implements the Namer interface for tag names.
func (n dictTags) Name(x interface{}) string {
return nameTag(dictLanguages{n.d}, dictScripts{n.d}, dictRegions{n.d}, x)
}
// Languages returns a Namer for naming languages. It returns nil if there is no
// data for the given tag. The type passed to Name must be either language.Base
// or language.Tag. Note that the result may differ between passing a tag or its
// base language. For example, for English, passing "nl-BE" would return Flemish
// whereas passing "nl" returns "Dutch".
func (d *Dictionary) Languages() Namer {
return dictLanguages{d}
}
type dictLanguages struct {
d *Dictionary
}
func (n dictLanguages) name(i int) string {
for d := n.d; d != nil; d = d.parent {
if s := d.lang.name(i); s != "" {
return s
}
}
return ""
}
// Name implements the Namer interface for language names.
func (n dictLanguages) Name(x interface{}) string {
return nameLanguage(n, x)
}
// Scripts returns a Namer for naming scripts. It returns nil if there is no
// data for the given tag. The type passed to Name must be either a
// language.Script or a language.Tag. It will not attempt to infer a script for
// tags with an unspecified script.
func (d *Dictionary) Scripts() Namer {
return dictScripts{d}
}
type dictScripts struct {
d *Dictionary
}
func (n dictScripts) name(i int) string {
for d := n.d; d != nil; d = d.parent {
if s := d.script.name(i); s != "" {
return s
}
}
return ""
}
// Name implements the Namer interface for script names.
func (n dictScripts) Name(x interface{}) string {
return nameScript(n, x)
}
// Regions returns a Namer for naming regions. It returns nil if there is no
// data for the given tag. The type passed to Name must be either a
// language.Region or a language.Tag. It will not attempt to infer a region for
// tags with an unspecified region.
func (d *Dictionary) Regions() Namer {
return dictRegions{d}
}
type dictRegions struct {
d *Dictionary
}
func (n dictRegions) name(i int) string {
for d := n.d; d != nil; d = d.parent {
if s := d.region.name(i); s != "" {
return s
}
}
return ""
}
// Name implements the Namer interface for region names.
func (n dictRegions) Name(x interface{}) string {
return nameRegion(n, x)
}
// A SelfNamer implements a Namer that returns the name of language in this same
// language. It provides a very compact mechanism to provide a comprehensive
// list of languages to users in their native language.
type SelfNamer struct {
// Supported defines the values supported by this Namer.
Supported language.Coverage
}
var (
// Self is a shared instance of a SelfNamer.
Self *SelfNamer = &self
self = SelfNamer{language.NewCoverage(selfTagSet.Tags)}
)
// Name returns the name of a given language tag in the language identified by
// this tag. It supports both the language.Base and language.Tag types.
func (n SelfNamer) Name(x interface{}) string {
t, _ := language.All.Compose(x)
base, scr, reg := t.Raw()
baseScript := language.Script{}
if (scr == language.Script{} && reg != language.Region{}) {
// For looking up in the self dictionary, we need to select the
// maximized script. This is even the case if the script isn't
// specified.
s1, _ := t.Script()
if baseScript = getScript(base); baseScript != s1 {
scr = s1
}
}
i, scr, reg := selfTagSet.index(base, scr, reg)
if i == -1 {
return ""
}
// Only return the display name if the script matches the expected script.
if (scr != language.Script{}) {
if (baseScript == language.Script{}) {
baseScript = getScript(base)
}
if baseScript != scr {
return ""
}
}
return selfHeaders[0].name(i)
}
// getScript returns the maximized script for a base language.
func getScript(b language.Base) language.Script {
tag, _ := language.Raw.Compose(b)
scr, _ := tag.Script()
return scr
}

251
vendor/golang.org/x/text/language/display/lookup.go generated vendored
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@ -1,251 +0,0 @@
// Copyright 2014 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package display
// This file contains common lookup code that is shared between the various
// implementations of Namer and Dictionaries.
import (
"fmt"
"sort"
"strings"
"golang.org/x/text/language"
)
type namer interface {
// name gets the string for the given index. It should walk the
// inheritance chain if a value is not present in the base index.
name(idx int) string
}
func nameLanguage(n namer, x interface{}) string {
t, _ := language.All.Compose(x)
for {
i, _, _ := langTagSet.index(t.Raw())
if s := n.name(i); s != "" {
return s
}
if t = t.Parent(); t == language.Und {
return ""
}
}
}
func nameScript(n namer, x interface{}) string {
t, _ := language.DeprecatedScript.Compose(x)
_, s, _ := t.Raw()
return n.name(scriptIndex.index(s.String()))
}
func nameRegion(n namer, x interface{}) string {
t, _ := language.DeprecatedRegion.Compose(x)
_, _, r := t.Raw()
return n.name(regionIndex.index(r.String()))
}
func nameTag(langN, scrN, regN namer, x interface{}) string {
t, ok := x.(language.Tag)
if !ok {
return ""
}
const form = language.All &^ language.SuppressScript
if c, err := form.Canonicalize(t); err == nil {
t = c
}
_, sRaw, rRaw := t.Raw()
i, scr, reg := langTagSet.index(t.Raw())
for i != -1 {
if str := langN.name(i); str != "" {
if hasS, hasR := (scr != language.Script{}), (reg != language.Region{}); hasS || hasR {
ss, sr := "", ""
if hasS {
ss = scrN.name(scriptIndex.index(scr.String()))
}
if hasR {
sr = regN.name(regionIndex.index(reg.String()))
}
// TODO: use patterns in CLDR or at least confirm they are the
// same for all languages.
if ss != "" && sr != "" {
return fmt.Sprintf("%s (%s, %s)", str, ss, sr)
}
if ss != "" || sr != "" {
return fmt.Sprintf("%s (%s%s)", str, ss, sr)
}
}
return str
}
scr, reg = sRaw, rRaw
if t = t.Parent(); t == language.Und {
return ""
}
i, _, _ = langTagSet.index(t.Raw())
}
return ""
}
// header contains the data and indexes for a single namer.
// data contains a series of strings concatenated into one. index contains the
// offsets for a string in data. For example, consider a header that defines
// strings for the languages de, el, en, fi, and nl:
//
// header{
// data: "GermanGreekEnglishDutch",
// index: []uint16{ 0, 6, 11, 18, 18, 23 },
// }
//
// For a language with index i, the string is defined by
// data[index[i]:index[i+1]]. So the number of elements in index is always one
// greater than the number of languages for which header defines a value.
// A string for a language may be empty, which means the name is undefined. In
// the above example, the name for fi (Finnish) is undefined.
type header struct {
data string
index []uint16
}
// name looks up the name for a tag in the dictionary, given its index.
func (h *header) name(i int) string {
if 0 <= i && i < len(h.index)-1 {
return h.data[h.index[i]:h.index[i+1]]
}
return ""
}
// tagSet is used to find the index of a language in a set of tags.
type tagSet struct {
single tagIndex
long []string
}
var (
langTagSet = tagSet{
single: langIndex,
long: langTagsLong,
}
// selfTagSet is used for indexing the language strings in their own
// language.
selfTagSet = tagSet{
single: selfIndex,
long: selfTagsLong,
}
zzzz = language.MustParseScript("Zzzz")
zz = language.MustParseRegion("ZZ")
)
// index returns the index of the tag for the given base, script and region or
// its parent if the tag is not available. If the match is for a parent entry,
// the excess script and region are returned.
func (ts *tagSet) index(base language.Base, scr language.Script, reg language.Region) (int, language.Script, language.Region) {
lang := base.String()
index := -1
if (scr != language.Script{} || reg != language.Region{}) {
if scr == zzzz {
scr = language.Script{}
}
if reg == zz {
reg = language.Region{}
}
i := sort.SearchStrings(ts.long, lang)
// All entries have either a script or a region and not both.
scrStr, regStr := scr.String(), reg.String()
for ; i < len(ts.long) && strings.HasPrefix(ts.long[i], lang); i++ {
if s := ts.long[i][len(lang)+1:]; s == scrStr {
scr = language.Script{}
index = i + ts.single.len()
break
} else if s == regStr {
reg = language.Region{}
index = i + ts.single.len()
break
}
}
}
if index == -1 {
index = ts.single.index(lang)
}
return index, scr, reg
}
func (ts *tagSet) Tags() []language.Tag {
tags := make([]language.Tag, 0, ts.single.len()+len(ts.long))
ts.single.keys(func(s string) {
tags = append(tags, language.Raw.MustParse(s))
})
for _, s := range ts.long {
tags = append(tags, language.Raw.MustParse(s))
}
return tags
}
func supportedScripts() []language.Script {
scr := make([]language.Script, 0, scriptIndex.len())
scriptIndex.keys(func(s string) {
scr = append(scr, language.MustParseScript(s))
})
return scr
}
func supportedRegions() []language.Region {
reg := make([]language.Region, 0, regionIndex.len())
regionIndex.keys(func(s string) {
reg = append(reg, language.MustParseRegion(s))
})
return reg
}
// tagIndex holds a concatenated lists of subtags of length 2 to 4, one string
// for each length, which can be used in combination with binary search to get
// the index associated with a tag.
// For example, a tagIndex{
// "arenesfrruzh", // 6 2-byte tags.
// "barwae", // 2 3-byte tags.
// "",
// }
// would mean that the 2-byte tag "fr" had an index of 3, and the 3-byte tag
// "wae" had an index of 7.
type tagIndex [3]string
func (t *tagIndex) index(s string) int {
sz := len(s)
if sz < 2 || 4 < sz {
return -1
}
a := t[sz-2]
index := sort.Search(len(a)/sz, func(i int) bool {
p := i * sz
return a[p:p+sz] >= s
})
p := index * sz
if end := p + sz; end > len(a) || a[p:end] != s {
return -1
}
// Add the number of tags for smaller sizes.
for i := 0; i < sz-2; i++ {
index += len(t[i]) / (i + 2)
}
return index
}
// len returns the number of tags that are contained in the tagIndex.
func (t *tagIndex) len() (n int) {
for i, s := range t {
n += len(s) / (i + 2)
}
return n
}
// keys calls f for each tag.
func (t *tagIndex) keys(f func(key string)) {
for i, s := range *t {
for ; s != ""; s = s[i+2:] {
f(s[:i+2])
}
}
}

602
vendor/golang.org/x/text/language/display/maketables.go generated vendored
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@ -1,602 +0,0 @@
// Copyright 2014 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build ignore
// Generator for display name tables.
package main
import (
"bytes"
"flag"
"fmt"
"log"
"reflect"
"sort"
"strings"
"golang.org/x/text/internal/gen"
"golang.org/x/text/language"
"golang.org/x/text/unicode/cldr"
)
var (
test = flag.Bool("test", false,
"test existing tables; can be used to compare web data with package data.")
outputFile = flag.String("output", "tables.go", "output file")
stats = flag.Bool("stats", false, "prints statistics to stderr")
short = flag.Bool("short", false, `Use "short" alternatives, when available.`)
draft = flag.String("draft",
"contributed",
`Minimal draft requirements (approved, contributed, provisional, unconfirmed).`)
pkg = flag.String("package",
"display",
"the name of the package in which the generated file is to be included")
tags = newTagSet("tags",
[]language.Tag{},
"space-separated list of tags to include or empty for all")
dict = newTagSet("dict",
dictTags(),
"space-separated list or tags for which to include a Dictionary. "+
`"" means the common list from go.text/language.`)
)
func dictTags() (tag []language.Tag) {
// TODO: replace with language.Common.Tags() once supported.
const str = "af am ar ar-001 az bg bn ca cs da de el en en-US en-GB " +
"es es-ES es-419 et fa fi fil fr fr-CA gu he hi hr hu hy id is it ja " +
"ka kk km kn ko ky lo lt lv mk ml mn mr ms my ne nl no pa pl pt pt-BR " +
"pt-PT ro ru si sk sl sq sr sr-Latn sv sw ta te th tr uk ur uz vi " +
"zh zh-Hans zh-Hant zu"
for _, s := range strings.Split(str, " ") {
tag = append(tag, language.MustParse(s))
}
return tag
}
func main() {
gen.Init()
// Read the CLDR zip file.
r := gen.OpenCLDRCoreZip()
defer r.Close()
d := &cldr.Decoder{}
d.SetDirFilter("main", "supplemental")
d.SetSectionFilter("localeDisplayNames")
data, err := d.DecodeZip(r)
if err != nil {
log.Fatalf("DecodeZip: %v", err)
}
w := gen.NewCodeWriter()
defer w.WriteGoFile(*outputFile, "display")
gen.WriteCLDRVersion(w)
b := builder{
w: w,
data: data,
group: make(map[string]*group),
}
b.generate()
}
const tagForm = language.All
// tagSet is used to parse command line flags of tags. It implements the
// flag.Value interface.
type tagSet map[language.Tag]bool
func newTagSet(name string, tags []language.Tag, usage string) tagSet {
f := tagSet(make(map[language.Tag]bool))
for _, t := range tags {
f[t] = true
}
flag.Var(f, name, usage)
return f
}
// String implements the String method of the flag.Value interface.
func (f tagSet) String() string {
tags := []string{}
for t := range f {
tags = append(tags, t.String())
}
sort.Strings(tags)
return strings.Join(tags, " ")
}
// Set implements Set from the flag.Value interface.
func (f tagSet) Set(s string) error {
if s != "" {
for _, s := range strings.Split(s, " ") {
if s != "" {
tag, err := tagForm.Parse(s)
if err != nil {
return err
}
f[tag] = true
}
}
}
return nil
}
func (f tagSet) contains(t language.Tag) bool {
if len(f) == 0 {
return true
}
return f[t]
}
// builder is used to create all tables with display name information.
type builder struct {
w *gen.CodeWriter
data *cldr.CLDR
fromLocs []string
// destination tags for the current locale.
toTags []string
toTagIndex map[string]int
// list of supported tags
supported []language.Tag
// key-value pairs per group
group map[string]*group
// statistics
sizeIndex int // total size of all indexes of headers
sizeData int // total size of all data of headers
totalSize int
}
type group struct {
// Maps from a given language to the Namer data for this language.
lang map[language.Tag]keyValues
headers []header
toTags []string
threeStart int
fourPlusStart int
}
// set sets the typ to the name for locale loc.
func (g *group) set(t language.Tag, typ, name string) {
kv := g.lang[t]
if kv == nil {
kv = make(keyValues)
g.lang[t] = kv
}
if kv[typ] == "" {
kv[typ] = name
}
}
type keyValues map[string]string
type header struct {
tag language.Tag
data string
index []uint16
}
var versionInfo = `// Version is deprecated. Use CLDRVersion.
const Version = %#v
`
var self = language.MustParse("mul")
// generate builds and writes all tables.
func (b *builder) generate() {
fmt.Fprintf(b.w, versionInfo, cldr.Version)
b.filter()
b.setData("lang", func(g *group, loc language.Tag, ldn *cldr.LocaleDisplayNames) {
if ldn.Languages != nil {
for _, v := range ldn.Languages.Language {
lang := v.Type
if lang == "root" {
// We prefer the data from "und"
// TODO: allow both the data for root and und somehow.
continue
}
tag := tagForm.MustParse(lang)
if tags.contains(tag) {
g.set(loc, tag.String(), v.Data())
}
}
}
})
b.setData("script", func(g *group, loc language.Tag, ldn *cldr.LocaleDisplayNames) {
if ldn.Scripts != nil {
for _, v := range ldn.Scripts.Script {
code := language.MustParseScript(v.Type)
if code.IsPrivateUse() { // Qaaa..Qabx
// TODO: data currently appears to be very meager.
// Reconsider if we have data for English.
if loc == language.English {
log.Fatal("Consider including data for private use scripts.")
}
continue
}
g.set(loc, code.String(), v.Data())
}
}
})
b.setData("region", func(g *group, loc language.Tag, ldn *cldr.LocaleDisplayNames) {
if ldn.Territories != nil {
for _, v := range ldn.Territories.Territory {
g.set(loc, language.MustParseRegion(v.Type).String(), v.Data())
}
}
})
b.makeSupported()
b.writeParents()
b.writeGroup("lang")
b.writeGroup("script")
b.writeGroup("region")
b.w.WriteConst("numSupported", len(b.supported))
buf := bytes.Buffer{}
for _, tag := range b.supported {
fmt.Fprint(&buf, tag.String(), "|")
}
b.w.WriteConst("supported", buf.String())
b.writeDictionaries()
b.supported = []language.Tag{self}
// Compute the names of locales in their own language. Some of these names
// may be specified in their parent locales. We iterate the maximum depth
// of the parent three times to match successive parents of tags until a
// possible match is found.
for i := 0; i < 4; i++ {
b.setData("self", func(g *group, tag language.Tag, ldn *cldr.LocaleDisplayNames) {
parent := tag
if b, s, r := tag.Raw(); i > 0 && (s != language.Script{} && r == language.Region{}) {
parent, _ = language.Raw.Compose(b)
}
if ldn.Languages != nil {
for _, v := range ldn.Languages.Language {
key := tagForm.MustParse(v.Type)
saved := key
if key == parent {
g.set(self, tag.String(), v.Data())
}
for k := 0; k < i; k++ {
key = key.Parent()
}
if key == tag {
g.set(self, saved.String(), v.Data()) // set does not overwrite a value.
}
}
}
})
}
b.writeGroup("self")
}
func (b *builder) setData(name string, f func(*group, language.Tag, *cldr.LocaleDisplayNames)) {
b.sizeIndex = 0
b.sizeData = 0
b.toTags = nil
b.fromLocs = nil
b.toTagIndex = make(map[string]int)
g := b.group[name]
if g == nil {
g = &group{lang: make(map[language.Tag]keyValues)}
b.group[name] = g
}
for _, loc := range b.data.Locales() {
// We use RawLDML instead of LDML as we are managing our own inheritance
// in this implementation.
ldml := b.data.RawLDML(loc)
// We do not support the POSIX variant (it is not a supported BCP 47
// variant). This locale also doesn't happen to contain any data, so
// we'll skip it by checking for this.
tag, err := tagForm.Parse(loc)
if err != nil {
if ldml.LocaleDisplayNames != nil {
log.Fatalf("setData: %v", err)
}
continue
}
if ldml.LocaleDisplayNames != nil && tags.contains(tag) {
f(g, tag, ldml.LocaleDisplayNames)
}
}
}
func (b *builder) filter() {
filter := func(s *cldr.Slice) {
if *short {
s.SelectOnePerGroup("alt", []string{"short", ""})
} else {
s.SelectOnePerGroup("alt", []string{"stand-alone", ""})
}
d, err := cldr.ParseDraft(*draft)
if err != nil {
log.Fatalf("filter: %v", err)
}
s.SelectDraft(d)
}
for _, loc := range b.data.Locales() {
if ldn := b.data.RawLDML(loc).LocaleDisplayNames; ldn != nil {
if ldn.Languages != nil {
s := cldr.MakeSlice(&ldn.Languages.Language)
if filter(&s); len(ldn.Languages.Language) == 0 {
ldn.Languages = nil
}
}
if ldn.Scripts != nil {
s := cldr.MakeSlice(&ldn.Scripts.Script)
if filter(&s); len(ldn.Scripts.Script) == 0 {
ldn.Scripts = nil
}
}
if ldn.Territories != nil {
s := cldr.MakeSlice(&ldn.Territories.Territory)
if filter(&s); len(ldn.Territories.Territory) == 0 {
ldn.Territories = nil
}
}
}
}
}
// makeSupported creates a list of all supported locales.
func (b *builder) makeSupported() {
// tags across groups
for _, g := range b.group {
for t, _ := range g.lang {
b.supported = append(b.supported, t)
}
}
b.supported = b.supported[:unique(tagsSorter(b.supported))]
}
type tagsSorter []language.Tag
func (a tagsSorter) Len() int { return len(a) }
func (a tagsSorter) Swap(i, j int) { a[i], a[j] = a[j], a[i] }
func (a tagsSorter) Less(i, j int) bool { return a[i].String() < a[j].String() }
func (b *builder) writeGroup(name string) {
g := b.group[name]
for _, kv := range g.lang {
for t, _ := range kv {
g.toTags = append(g.toTags, t)
}
}
g.toTags = g.toTags[:unique(tagsBySize(g.toTags))]
// Allocate header per supported value.
g.headers = make([]header, len(b.supported))
for i, sup := range b.supported {
kv, ok := g.lang[sup]
if !ok {
g.headers[i].tag = sup
continue
}
data := []byte{}
index := make([]uint16, len(g.toTags), len(g.toTags)+1)
for j, t := range g.toTags {
index[j] = uint16(len(data))
data = append(data, kv[t]...)
}
index = append(index, uint16(len(data)))
// Trim the tail of the index.
// TODO: indexes can be reduced in size quite a bit more.
n := len(index)
for ; n >= 2 && index[n-2] == index[n-1]; n-- {
}
index = index[:n]
// Workaround for a bug in CLDR 26.
// See http://unicode.org/cldr/trac/ticket/8042.
if cldr.Version == "26" && sup.String() == "hsb" {
data = bytes.Replace(data, []byte{'"'}, nil, 1)
}
g.headers[i] = header{sup, string(data), index}
}
g.writeTable(b.w, name)
}
type tagsBySize []string
func (l tagsBySize) Len() int { return len(l) }
func (l tagsBySize) Swap(i, j int) { l[i], l[j] = l[j], l[i] }
func (l tagsBySize) Less(i, j int) bool {
a, b := l[i], l[j]
// Sort single-tag entries based on size first. Otherwise alphabetic.
if len(a) != len(b) && (len(a) <= 4 || len(b) <= 4) {
return len(a) < len(b)
}
return a < b
}
// parentIndices returns slice a of len(tags) where tags[a[i]] is the parent
// of tags[i].
func parentIndices(tags []language.Tag) []int16 {
index := make(map[language.Tag]int16)
for i, t := range tags {
index[t] = int16(i)
}
// Construct default parents.
parents := make([]int16, len(tags))
for i, t := range tags {
parents[i] = -1
for t = t.Parent(); t != language.Und; t = t.Parent() {
if j, ok := index[t]; ok {
parents[i] = j
break
}
}
}
return parents
}
func (b *builder) writeParents() {
parents := parentIndices(b.supported)
fmt.Fprintf(b.w, "var parents = ")
b.w.WriteArray(parents)
}
// writeKeys writes keys to a special index used by the display package.
// tags are assumed to be sorted by length.
func writeKeys(w *gen.CodeWriter, name string, keys []string) {
w.Size += int(3 * reflect.TypeOf("").Size())
w.WriteComment("Number of keys: %d", len(keys))
fmt.Fprintf(w, "var (\n\t%sIndex = tagIndex{\n", name)
for i := 2; i <= 4; i++ {
sub := []string{}
for _, t := range keys {
if len(t) != i {
break
}
sub = append(sub, t)
}
s := strings.Join(sub, "")
w.WriteString(s)
fmt.Fprintf(w, ",\n")
keys = keys[len(sub):]
}
fmt.Fprintln(w, "\t}")
if len(keys) > 0 {
w.Size += int(reflect.TypeOf([]string{}).Size())
fmt.Fprintf(w, "\t%sTagsLong = ", name)
w.WriteSlice(keys)
}
fmt.Fprintln(w, ")\n")
}
// identifier creates an identifier from the given tag.
func identifier(t language.Tag) string {
return strings.Replace(t.String(), "-", "", -1)
}
func (h *header) writeEntry(w *gen.CodeWriter, name string) {
if len(dict) > 0 && dict.contains(h.tag) {
fmt.Fprintf(w, "\t{ // %s\n", h.tag)
fmt.Fprintf(w, "\t\t%[1]s%[2]sStr,\n\t\t%[1]s%[2]sIdx,\n", identifier(h.tag), name)
fmt.Fprintln(w, "\t},")
} else if len(h.data) == 0 {
fmt.Fprintln(w, "\t\t{}, //", h.tag)
} else {
fmt.Fprintf(w, "\t{ // %s\n", h.tag)
w.WriteString(h.data)
fmt.Fprintln(w, ",")
w.WriteSlice(h.index)
fmt.Fprintln(w, ",\n\t},")
}
}
// write the data for the given header as single entries. The size for this data
// was already accounted for in writeEntry.
func (h *header) writeSingle(w *gen.CodeWriter, name string) {
if len(dict) > 0 && dict.contains(h.tag) {
tag := identifier(h.tag)
w.WriteConst(tag+name+"Str", h.data)
// Note that we create a slice instead of an array. If we use an array
// we need to refer to it as a[:] in other tables, which will cause the
// array to always be included by the linker. See Issue 7651.
w.WriteVar(tag+name+"Idx", h.index)
}
}
// WriteTable writes an entry for a single Namer.
func (g *group) writeTable(w *gen.CodeWriter, name string) {
start := w.Size
writeKeys(w, name, g.toTags)
w.Size += len(g.headers) * int(reflect.ValueOf(g.headers[0]).Type().Size())
fmt.Fprintf(w, "var %sHeaders = [%d]header{\n", name, len(g.headers))
title := strings.Title(name)
for _, h := range g.headers {
h.writeEntry(w, title)
}
fmt.Fprintln(w, "}\n")
for _, h := range g.headers {
h.writeSingle(w, title)
}
n := w.Size - start
fmt.Fprintf(w, "// Total size for %s: %d bytes (%d KB)\n\n", name, n, n/1000)
}
func (b *builder) writeDictionaries() {
fmt.Fprintln(b.w, "// Dictionary entries of frequent languages")
fmt.Fprintln(b.w, "var (")
parents := parentIndices(b.supported)
for i, t := range b.supported {
if dict.contains(t) {
ident := identifier(t)
fmt.Fprintf(b.w, "\t%s = Dictionary{ // %s\n", ident, t)
if p := parents[i]; p == -1 {
fmt.Fprintln(b.w, "\t\tnil,")
} else {
fmt.Fprintf(b.w, "\t\t&%s,\n", identifier(b.supported[p]))
}
fmt.Fprintf(b.w, "\t\theader{%[1]sLangStr, %[1]sLangIdx},\n", ident)
fmt.Fprintf(b.w, "\t\theader{%[1]sScriptStr, %[1]sScriptIdx},\n", ident)
fmt.Fprintf(b.w, "\t\theader{%[1]sRegionStr, %[1]sRegionIdx},\n", ident)
fmt.Fprintln(b.w, "\t}")
}
}
fmt.Fprintln(b.w, ")")
var s string
var a []uint16
sz := reflect.TypeOf(s).Size()
sz += reflect.TypeOf(a).Size()
sz *= 3
sz += reflect.TypeOf(&a).Size()
n := int(sz) * len(dict)
fmt.Fprintf(b.w, "// Total size for %d entries: %d bytes (%d KB)\n\n", len(dict), n, n/1000)
b.w.Size += n
}
// unique sorts the given lists and removes duplicate entries by swapping them
// past position k, where k is the number of unique values. It returns k.
func unique(a sort.Interface) int {
if a.Len() == 0 {
return 0
}
sort.Sort(a)
k := 1
for i := 1; i < a.Len(); i++ {
if a.Less(k-1, i) {
if k != i {
a.Swap(k, i)
}
k++
}
}
return k
}

53114
vendor/golang.org/x/text/language/display/tables.go generated vendored
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102
vendor/golang.org/x/text/language/doc.go generated vendored
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@ -1,102 +0,0 @@
// Copyright 2017 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Package language implements BCP 47 language tags and related functionality.
//
// The most important function of package language is to match a list of
// user-preferred languages to a list of supported languages.
// It alleviates the developer of dealing with the complexity of this process
// and provides the user with the best experience
// (see https://blog.golang.org/matchlang).
//
//
// Matching preferred against supported languages
//
// A Matcher for an application that supports English, Australian English,
// Danish, and standard Mandarin can be created as follows:
//
// var matcher = language.NewMatcher([]language.Tag{
// language.English, // The first language is used as fallback.
// language.MustParse("en-AU"),
// language.Danish,
// language.Chinese,
// })
//
// This list of supported languages is typically implied by the languages for
// which there exists translations of the user interface.
//
// User-preferred languages usually come as a comma-separated list of BCP 47
// language tags.
// The MatchString finds best matches for such strings:
//
// handler(w http.ResponseWriter, r *http.Request) {
// lang, _ := r.Cookie("lang")
// accept := r.Header.Get("Accept-Language")
// tag, _ := language.MatchStrings(matcher, lang.String(), accept)
//
// // tag should now be used for the initialization of any
// // locale-specific service.
// }
//
// The Matcher's Match method can be used to match Tags directly.
//
// Matchers are aware of the intricacies of equivalence between languages, such
// as deprecated subtags, legacy tags, macro languages, mutual
// intelligibility between scripts and languages, and transparently passing
// BCP 47 user configuration.
// For instance, it will know that a reader of Bokmål Danish can read Norwegian
// and will know that Cantonese ("yue") is a good match for "zh-HK".
//
//
// Using match results
//
// To guarantee a consistent user experience to the user it is important to
// use the same language tag for the selection of any locale-specific services.
// For example, it is utterly confusing to substitute spelled-out numbers
// or dates in one language in text of another language.
// More subtly confusing is using the wrong sorting order or casing
// algorithm for a certain language.
//
// All the packages in x/text that provide locale-specific services
// (e.g. collate, cases) should be initialized with the tag that was
// obtained at the start of an interaction with the user.
//
// Note that Tag that is returned by Match and MatchString may differ from any
// of the supported languages, as it may contain carried over settings from
// the user tags.
// This may be inconvenient when your application has some additional
// locale-specific data for your supported languages.
// Match and MatchString both return the index of the matched supported tag
// to simplify associating such data with the matched tag.
//
//
// Canonicalization
//
// If one uses the Matcher to compare languages one does not need to
// worry about canonicalization.
//
// The meaning of a Tag varies per application. The language package
// therefore delays canonicalization and preserves information as much
// as possible. The Matcher, however, will always take into account that
// two different tags may represent the same language.
//
// By default, only legacy and deprecated tags are converted into their
// canonical equivalent. All other information is preserved. This approach makes
// the confidence scores more accurate and allows matchers to distinguish
// between variants that are otherwise lost.
//
// As a consequence, two tags that should be treated as identical according to
// BCP 47 or CLDR, like "en-Latn" and "en", will be represented differently. The
// Matcher handles such distinctions, though, and is aware of the
// equivalence relations. The CanonType type can be used to alter the
// canonicalization form.
//
// References
//
// BCP 47 - Tags for Identifying Languages http://tools.ietf.org/html/bcp47
//
package language // import "golang.org/x/text/language"
// TODO: explanation on how to match languages for your own locale-specific
// service.

305
vendor/golang.org/x/text/language/gen.go generated vendored
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@ -1,305 +0,0 @@
// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build ignore
// Language tag table generator.
// Data read from the web.
package main
import (
"flag"
"fmt"
"io"
"log"
"sort"
"strconv"
"strings"
"golang.org/x/text/internal/gen"
"golang.org/x/text/internal/language"
"golang.org/x/text/unicode/cldr"
)
var (
test = flag.Bool("test",
false,
"test existing tables; can be used to compare web data with package data.")
outputFile = flag.String("output",
"tables.go",
"output file for generated tables")
)
func main() {
gen.Init()
w := gen.NewCodeWriter()
defer w.WriteGoFile("tables.go", "language")
b := newBuilder(w)
gen.WriteCLDRVersion(w)
b.writeConstants()
b.writeMatchData()
}
type builder struct {
w *gen.CodeWriter
hw io.Writer // MultiWriter for w and w.Hash
data *cldr.CLDR
supp *cldr.SupplementalData
}
func (b *builder) langIndex(s string) uint16 {
return uint16(language.MustParseBase(s))
}
func (b *builder) regionIndex(s string) int {
return int(language.MustParseRegion(s))
}
func (b *builder) scriptIndex(s string) int {
return int(language.MustParseScript(s))
}
func newBuilder(w *gen.CodeWriter) *builder {
r := gen.OpenCLDRCoreZip()
defer r.Close()
d := &cldr.Decoder{}
data, err := d.DecodeZip(r)
if err != nil {
log.Fatal(err)
}
b := builder{
w: w,
hw: io.MultiWriter(w, w.Hash),
data: data,
supp: data.Supplemental(),
}
return &b
}
// writeConsts computes f(v) for all v in values and writes the results
// as constants named _v to a single constant block.
func (b *builder) writeConsts(f func(string) int, values ...string) {
fmt.Fprintln(b.w, "const (")
for _, v := range values {
fmt.Fprintf(b.w, "\t_%s = %v\n", v, f(v))
}
fmt.Fprintln(b.w, ")")
}
// TODO: region inclusion data will probably not be use used in future matchers.
var langConsts = []string{
"de", "en", "fr", "it", "mo", "no", "nb", "pt", "sh", "mul", "und",
}
var scriptConsts = []string{
"Latn", "Hani", "Hans", "Hant", "Qaaa", "Qaai", "Qabx", "Zinh", "Zyyy",
"Zzzz",
}
var regionConsts = []string{
"001", "419", "BR", "CA", "ES", "GB", "MD", "PT", "UK", "US",
"ZZ", "XA", "XC", "XK", // Unofficial tag for Kosovo.
}
func (b *builder) writeConstants() {
b.writeConsts(func(s string) int { return int(b.langIndex(s)) }, langConsts...)
b.writeConsts(b.regionIndex, regionConsts...)
b.writeConsts(b.scriptIndex, scriptConsts...)
}
type mutualIntelligibility struct {
want, have uint16
distance uint8
oneway bool
}
type scriptIntelligibility struct {
wantLang, haveLang uint16
wantScript, haveScript uint8
distance uint8
// Always oneway
}
type regionIntelligibility struct {
lang uint16 // compact language id
script uint8 // 0 means any
group uint8 // 0 means any; if bit 7 is set it means inverse
distance uint8
// Always twoway.
}
// writeMatchData writes tables with languages and scripts for which there is
// mutual intelligibility. The data is based on CLDR's languageMatching data.
// Note that we use a different algorithm than the one defined by CLDR and that
// we slightly modify the data. For example, we convert scores to confidence levels.
// We also drop all region-related data as we use a different algorithm to
// determine region equivalence.
func (b *builder) writeMatchData() {
lm := b.supp.LanguageMatching.LanguageMatches
cldr.MakeSlice(&lm).SelectAnyOf("type", "written_new")
regionHierarchy := map[string][]string{}
for _, g := range b.supp.TerritoryContainment.Group {
regions := strings.Split(g.Contains, " ")
regionHierarchy[g.Type] = append(regionHierarchy[g.Type], regions...)
}
regionToGroups := make([]uint8, language.NumRegions)
idToIndex := map[string]uint8{}
for i, mv := range lm[0].MatchVariable {
if i > 6 {
log.Fatalf("Too many groups: %d", i)
}
idToIndex[mv.Id] = uint8(i + 1)
// TODO: also handle '-'
for _, r := range strings.Split(mv.Value, "+") {
todo := []string{r}
for k := 0; k < len(todo); k++ {
r := todo[k]
regionToGroups[b.regionIndex(r)] |= 1 << uint8(i)
todo = append(todo, regionHierarchy[r]...)
}
}
}
b.w.WriteVar("regionToGroups", regionToGroups)
// maps language id to in- and out-of-group region.
paradigmLocales := [][3]uint16{}
locales := strings.Split(lm[0].ParadigmLocales[0].Locales, " ")
for i := 0; i < len(locales); i += 2 {
x := [3]uint16{}
for j := 0; j < 2; j++ {
pc := strings.SplitN(locales[i+j], "-", 2)
x[0] = b.langIndex(pc[0])
if len(pc) == 2 {
x[1+j] = uint16(b.regionIndex(pc[1]))
}
}
paradigmLocales = append(paradigmLocales, x)
}
b.w.WriteVar("paradigmLocales", paradigmLocales)
b.w.WriteType(mutualIntelligibility{})
b.w.WriteType(scriptIntelligibility{})
b.w.WriteType(regionIntelligibility{})
matchLang := []mutualIntelligibility{}
matchScript := []scriptIntelligibility{}
matchRegion := []regionIntelligibility{}
// Convert the languageMatch entries in lists keyed by desired language.
for _, m := range lm[0].LanguageMatch {
// Different versions of CLDR use different separators.
desired := strings.Replace(m.Desired, "-", "_", -1)
supported := strings.Replace(m.Supported, "-", "_", -1)
d := strings.Split(desired, "_")
s := strings.Split(supported, "_")
if len(d) != len(s) {
log.Fatalf("not supported: desired=%q; supported=%q", desired, supported)
continue
}
distance, _ := strconv.ParseInt(m.Distance, 10, 8)
switch len(d) {
case 2:
if desired == supported && desired == "*_*" {
continue
}
// language-script pair.
matchScript = append(matchScript, scriptIntelligibility{
wantLang: uint16(b.langIndex(d[0])),
haveLang: uint16(b.langIndex(s[0])),
wantScript: uint8(b.scriptIndex(d[1])),
haveScript: uint8(b.scriptIndex(s[1])),
distance: uint8(distance),
})
if m.Oneway != "true" {
matchScript = append(matchScript, scriptIntelligibility{
wantLang: uint16(b.langIndex(s[0])),
haveLang: uint16(b.langIndex(d[0])),
wantScript: uint8(b.scriptIndex(s[1])),
haveScript: uint8(b.scriptIndex(d[1])),
distance: uint8(distance),
})
}
case 1:
if desired == supported && desired == "*" {
continue
}
if distance == 1 {
// nb == no is already handled by macro mapping. Check there
// really is only this case.
if d[0] != "no" || s[0] != "nb" {
log.Fatalf("unhandled equivalence %s == %s", s[0], d[0])
}
continue
}
// TODO: consider dropping oneway field and just doubling the entry.
matchLang = append(matchLang, mutualIntelligibility{
want: uint16(b.langIndex(d[0])),
have: uint16(b.langIndex(s[0])),
distance: uint8(distance),
oneway: m.Oneway == "true",
})
case 3:
if desired == supported && desired == "*_*_*" {
continue
}
if desired != supported {
// This is now supported by CLDR, but only one case, which
// should already be covered by paradigm locales. For instance,
// test case "und, en, en-GU, en-IN, en-GB ; en-ZA ; en-GB" in
// testdata/CLDRLocaleMatcherTest.txt tests this.
if supported != "en_*_GB" {
log.Fatalf("not supported: desired=%q; supported=%q", desired, supported)
}
continue
}
ri := regionIntelligibility{
lang: b.langIndex(d[0]),
distance: uint8(distance),
}
if d[1] != "*" {
ri.script = uint8(b.scriptIndex(d[1]))
}
switch {
case d[2] == "*":
ri.group = 0x80 // not contained in anything
case strings.HasPrefix(d[2], "$!"):
ri.group = 0x80
d[2] = "$" + d[2][len("$!"):]
fallthrough
case strings.HasPrefix(d[2], "$"):
ri.group |= idToIndex[d[2]]
}
matchRegion = append(matchRegion, ri)
default:
log.Fatalf("not supported: desired=%q; supported=%q", desired, supported)
}
}
sort.SliceStable(matchLang, func(i, j int) bool {
return matchLang[i].distance < matchLang[j].distance
})
b.w.WriteComment(`
matchLang holds pairs of langIDs of base languages that are typically
mutually intelligible. Each pair is associated with a confidence and
whether the intelligibility goes one or both ways.`)
b.w.WriteVar("matchLang", matchLang)
b.w.WriteComment(`
matchScript holds pairs of scriptIDs where readers of one script
can typically also read the other. Each is associated with a confidence.`)
sort.SliceStable(matchScript, func(i, j int) bool {
return matchScript[i].distance < matchScript[j].distance
})
b.w.WriteVar("matchScript", matchScript)
sort.SliceStable(matchRegion, func(i, j int) bool {
return matchRegion[i].distance < matchRegion[j].distance
})
b.w.WriteVar("matchRegion", matchRegion)
}

38
vendor/golang.org/x/text/language/go1_1.go generated vendored
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@ -1,38 +0,0 @@
// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build !go1.2
package language
import "sort"
func sortStable(s sort.Interface) {
ss := stableSort{
s: s,
pos: make([]int, s.Len()),
}
for i := range ss.pos {
ss.pos[i] = i
}
sort.Sort(&ss)
}
type stableSort struct {
s sort.Interface
pos []int
}
func (s *stableSort) Len() int {
return len(s.pos)
}
func (s *stableSort) Less(i, j int) bool {
return s.s.Less(i, j) || !s.s.Less(j, i) && s.pos[i] < s.pos[j]
}
func (s *stableSort) Swap(i, j int) {
s.s.Swap(i, j)
s.pos[i], s.pos[j] = s.pos[j], s.pos[i]
}

11
vendor/golang.org/x/text/language/go1_2.go generated vendored
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@ -1,11 +0,0 @@
// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build go1.2
package language
import "sort"
var sortStable = sort.Stable

596
vendor/golang.org/x/text/language/language.go generated vendored
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@ -1,596 +0,0 @@
// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
//go:generate go run gen.go -output tables.go
package language
// TODO: Remove above NOTE after:
// - verifying that tables are dropped correctly (most notably matcher tables).
import (
"strings"
"golang.org/x/text/internal/language"
"golang.org/x/text/internal/language/compact"
)
// Tag represents a BCP 47 language tag. It is used to specify an instance of a
// specific language or locale. All language tag values are guaranteed to be
// well-formed.
type Tag compact.Tag
func makeTag(t language.Tag) (tag Tag) {
return Tag(compact.Make(t))
}
func (t *Tag) tag() language.Tag {
return (*compact.Tag)(t).Tag()
}
func (t *Tag) isCompact() bool {
return (*compact.Tag)(t).IsCompact()
}
// TODO: improve performance.
func (t *Tag) lang() language.Language { return t.tag().LangID }
func (t *Tag) region() language.Region { return t.tag().RegionID }
func (t *Tag) script() language.Script { return t.tag().ScriptID }
// Make is a convenience wrapper for Parse that omits the error.
// In case of an error, a sensible default is returned.
func Make(s string) Tag {
return Default.Make(s)
}
// Make is a convenience wrapper for c.Parse that omits the error.
// In case of an error, a sensible default is returned.
func (c CanonType) Make(s string) Tag {
t, _ := c.Parse(s)
return t
}
// Raw returns the raw base language, script and region, without making an
// attempt to infer their values.
func (t Tag) Raw() (b Base, s Script, r Region) {
tt := t.tag()
return Base{tt.LangID}, Script{tt.ScriptID}, Region{tt.RegionID}
}
// IsRoot returns true if t is equal to language "und".
func (t Tag) IsRoot() bool {
return compact.Tag(t).IsRoot()
}
// CanonType can be used to enable or disable various types of canonicalization.
type CanonType int
const (
// Replace deprecated base languages with their preferred replacements.
DeprecatedBase CanonType = 1 << iota
// Replace deprecated scripts with their preferred replacements.
DeprecatedScript
// Replace deprecated regions with their preferred replacements.
DeprecatedRegion
// Remove redundant scripts.
SuppressScript
// Normalize legacy encodings. This includes legacy languages defined in
// CLDR as well as bibliographic codes defined in ISO-639.
Legacy
// Map the dominant language of a macro language group to the macro language
// subtag. For example cmn -> zh.
Macro
// The CLDR flag should be used if full compatibility with CLDR is required.
// There are a few cases where language.Tag may differ from CLDR. To follow all
// of CLDR's suggestions, use All|CLDR.
CLDR
// Raw can be used to Compose or Parse without Canonicalization.
Raw CanonType = 0
// Replace all deprecated tags with their preferred replacements.
Deprecated = DeprecatedBase | DeprecatedScript | DeprecatedRegion
// All canonicalizations recommended by BCP 47.
BCP47 = Deprecated | SuppressScript
// All canonicalizations.
All = BCP47 | Legacy | Macro
// Default is the canonicalization used by Parse, Make and Compose. To
// preserve as much information as possible, canonicalizations that remove
// potentially valuable information are not included. The Matcher is
// designed to recognize similar tags that would be the same if
// they were canonicalized using All.
Default = Deprecated | Legacy
canonLang = DeprecatedBase | Legacy | Macro
// TODO: LikelyScript, LikelyRegion: suppress similar to ICU.
)
// canonicalize returns the canonicalized equivalent of the tag and
// whether there was any change.
func canonicalize(c CanonType, t language.Tag) (language.Tag, bool) {
if c == Raw {
return t, false
}
changed := false
if c&SuppressScript != 0 {
if t.LangID.SuppressScript() == t.ScriptID {
t.ScriptID = 0
changed = true
}
}
if c&canonLang != 0 {
for {
if l, aliasType := t.LangID.Canonicalize(); l != t.LangID {
switch aliasType {
case language.Legacy:
if c&Legacy != 0 {
if t.LangID == _sh && t.ScriptID == 0 {
t.ScriptID = _Latn
}
t.LangID = l
changed = true
}
case language.Macro:
if c&Macro != 0 {
// We deviate here from CLDR. The mapping "nb" -> "no"
// qualifies as a typical Macro language mapping. However,
// for legacy reasons, CLDR maps "no", the macro language
// code for Norwegian, to the dominant variant "nb". This
// change is currently under consideration for CLDR as well.
// See http://unicode.org/cldr/trac/ticket/2698 and also
// http://unicode.org/cldr/trac/ticket/1790 for some of the
// practical implications. TODO: this check could be removed
// if CLDR adopts this change.
if c&CLDR == 0 || t.LangID != _nb {
changed = true
t.LangID = l
}
}
case language.Deprecated:
if c&DeprecatedBase != 0 {
if t.LangID == _mo && t.RegionID == 0 {
t.RegionID = _MD
}
t.LangID = l
changed = true
// Other canonicalization types may still apply.
continue
}
}
} else if c&Legacy != 0 && t.LangID == _no && c&CLDR != 0 {
t.LangID = _nb
changed = true
}
break
}
}
if c&DeprecatedScript != 0 {
if t.ScriptID == _Qaai {
changed = true
t.ScriptID = _Zinh
}
}
if c&DeprecatedRegion != 0 {
if r := t.RegionID.Canonicalize(); r != t.RegionID {
changed = true
t.RegionID = r
}
}
return t, changed
}
// Canonicalize returns the canonicalized equivalent of the tag.
func (c CanonType) Canonicalize(t Tag) (Tag, error) {
// First try fast path.
if t.isCompact() {
if _, changed := canonicalize(c, compact.Tag(t).Tag()); !changed {
return t, nil
}
}
// It is unlikely that one will canonicalize a tag after matching. So do
// a slow but simple approach here.
if tag, changed := canonicalize(c, t.tag()); changed {
tag.RemakeString()
return makeTag(tag), nil
}
return t, nil
}
// Confidence indicates the level of certainty for a given return value.
// For example, Serbian may be written in Cyrillic or Latin script.
// The confidence level indicates whether a value was explicitly specified,
// whether it is typically the only possible value, or whether there is
// an ambiguity.
type Confidence int
const (
No Confidence = iota // full confidence that there was no match
Low // most likely value picked out of a set of alternatives
High // value is generally assumed to be the correct match
Exact // exact match or explicitly specified value
)
var confName = []string{"No", "Low", "High", "Exact"}
func (c Confidence) String() string {
return confName[c]
}
// String returns the canonical string representation of the language tag.
func (t Tag) String() string {
return t.tag().String()
}
// MarshalText implements encoding.TextMarshaler.
func (t Tag) MarshalText() (text []byte, err error) {
return t.tag().MarshalText()
}
// UnmarshalText implements encoding.TextUnmarshaler.
func (t *Tag) UnmarshalText(text []byte) error {
var tag language.Tag
err := tag.UnmarshalText(text)
*t = makeTag(tag)
return err
}
// Base returns the base language of the language tag. If the base language is
// unspecified, an attempt will be made to infer it from the context.
// It uses a variant of CLDR's Add Likely Subtags algorithm. This is subject to change.
func (t Tag) Base() (Base, Confidence) {
if b := t.lang(); b != 0 {
return Base{b}, Exact
}
tt := t.tag()
c := High
if tt.ScriptID == 0 && !tt.RegionID.IsCountry() {
c = Low
}
if tag, err := tt.Maximize(); err == nil && tag.LangID != 0 {
return Base{tag.LangID}, c
}
return Base{0}, No
}
// Script infers the script for the language tag. If it was not explicitly given, it will infer
// a most likely candidate.
// If more than one script is commonly used for a language, the most likely one
// is returned with a low confidence indication. For example, it returns (Cyrl, Low)
// for Serbian.
// If a script cannot be inferred (Zzzz, No) is returned. We do not use Zyyy (undetermined)
// as one would suspect from the IANA registry for BCP 47. In a Unicode context Zyyy marks
// common characters (like 1, 2, 3, '.', etc.) and is therefore more like multiple scripts.
// See http://www.unicode.org/reports/tr24/#Values for more details. Zzzz is also used for
// unknown value in CLDR. (Zzzz, Exact) is returned if Zzzz was explicitly specified.
// Note that an inferred script is never guaranteed to be the correct one. Latin is
// almost exclusively used for Afrikaans, but Arabic has been used for some texts
// in the past. Also, the script that is commonly used may change over time.
// It uses a variant of CLDR's Add Likely Subtags algorithm. This is subject to change.
func (t Tag) Script() (Script, Confidence) {
if scr := t.script(); scr != 0 {
return Script{scr}, Exact
}
tt := t.tag()
sc, c := language.Script(_Zzzz), No
if scr := tt.LangID.SuppressScript(); scr != 0 {
// Note: it is not always the case that a language with a suppress
// script value is only written in one script (e.g. kk, ms, pa).
if tt.RegionID == 0 {
return Script{scr}, High
}
sc, c = scr, High
}
if tag, err := tt.Maximize(); err == nil {
if tag.ScriptID != sc {
sc, c = tag.ScriptID, Low
}
} else {
tt, _ = canonicalize(Deprecated|Macro, tt)
if tag, err := tt.Maximize(); err == nil && tag.ScriptID != sc {
sc, c = tag.ScriptID, Low
}
}
return Script{sc}, c
}
// Region returns the region for the language tag. If it was not explicitly given, it will
// infer a most likely candidate from the context.
// It uses a variant of CLDR's Add Likely Subtags algorithm. This is subject to change.
func (t Tag) Region() (Region, Confidence) {
if r := t.region(); r != 0 {
return Region{r}, Exact
}
tt := t.tag()
if tt, err := tt.Maximize(); err == nil {
return Region{tt.RegionID}, Low // TODO: differentiate between high and low.
}
tt, _ = canonicalize(Deprecated|Macro, tt)
if tag, err := tt.Maximize(); err == nil {
return Region{tag.RegionID}, Low
}
return Region{_ZZ}, No // TODO: return world instead of undetermined?
}
// Variants returns the variants specified explicitly for this language tag.
// or nil if no variant was specified.
func (t Tag) Variants() []Variant {
if !compact.Tag(t).MayHaveVariants() {
return nil
}
v := []Variant{}
x, str := "", t.tag().Variants()
for str != "" {
x, str = nextToken(str)
v = append(v, Variant{x})
}
return v
}
// Parent returns the CLDR parent of t. In CLDR, missing fields in data for a
// specific language are substituted with fields from the parent language.
// The parent for a language may change for newer versions of CLDR.
func (t Tag) Parent() Tag {
return Tag(compact.Tag(t).Parent())
}
// returns token t and the rest of the string.
func nextToken(s string) (t, tail string) {
p := strings.Index(s[1:], "-")
if p == -1 {
return s[1:], ""
}
p++
return s[1:p], s[p:]
}
// Extension is a single BCP 47 extension.
type Extension struct {
s string
}
// String returns the string representation of the extension, including the
// type tag.
func (e Extension) String() string {
return e.s
}
// ParseExtension parses s as an extension and returns it on success.
func ParseExtension(s string) (e Extension, err error) {
ext, err := language.ParseExtension(s)
return Extension{ext}, err
}
// Type returns the one-byte extension type of e. It returns 0 for the zero
// exception.
func (e Extension) Type() byte {
if e.s == "" {
return 0
}
return e.s[0]
}
// Tokens returns the list of tokens of e.
func (e Extension) Tokens() []string {
return strings.Split(e.s, "-")
}
// Extension returns the extension of type x for tag t. It will return
// false for ok if t does not have the requested extension. The returned
// extension will be invalid in this case.
func (t Tag) Extension(x byte) (ext Extension, ok bool) {
if !compact.Tag(t).MayHaveExtensions() {
return Extension{}, false
}
e, ok := t.tag().Extension(x)
return Extension{e}, ok
}
// Extensions returns all extensions of t.
func (t Tag) Extensions() []Extension {
if !compact.Tag(t).MayHaveExtensions() {
return nil
}
e := []Extension{}
for _, ext := range t.tag().Extensions() {
e = append(e, Extension{ext})
}
return e
}
// TypeForKey returns the type associated with the given key, where key and type
// are of the allowed values defined for the Unicode locale extension ('u') in
// http://www.unicode.org/reports/tr35/#Unicode_Language_and_Locale_Identifiers.
// TypeForKey will traverse the inheritance chain to get the correct value.
func (t Tag) TypeForKey(key string) string {
if !compact.Tag(t).MayHaveExtensions() {
if key != "rg" && key != "va" {
return ""
}
}
return t.tag().TypeForKey(key)
}
// SetTypeForKey returns a new Tag with the key set to type, where key and type
// are of the allowed values defined for the Unicode locale extension ('u') in
// http://www.unicode.org/reports/tr35/#Unicode_Language_and_Locale_Identifiers.
// An empty value removes an existing pair with the same key.
func (t Tag) SetTypeForKey(key, value string) (Tag, error) {
tt, err := t.tag().SetTypeForKey(key, value)
return makeTag(tt), err
}
// NumCompactTags is the number of compact tags. The maximum tag is
// NumCompactTags-1.
const NumCompactTags = compact.NumCompactTags
// CompactIndex returns an index, where 0 <= index < NumCompactTags, for tags
// for which data exists in the text repository.The index will change over time
// and should not be stored in persistent storage. If t does not match a compact
// index, exact will be false and the compact index will be returned for the
// first match after repeatedly taking the Parent of t.
func CompactIndex(t Tag) (index int, exact bool) {
id, exact := compact.LanguageID(compact.Tag(t))
return int(id), exact
}
var root = language.Tag{}
// Base is an ISO 639 language code, used for encoding the base language
// of a language tag.
type Base struct {
langID language.Language
}
// ParseBase parses a 2- or 3-letter ISO 639 code.
// It returns a ValueError if s is a well-formed but unknown language identifier
// or another error if another error occurred.
func ParseBase(s string) (Base, error) {
l, err := language.ParseBase(s)
return Base{l}, err
}
// String returns the BCP 47 representation of the base language.
func (b Base) String() string {
return b.langID.String()
}
// ISO3 returns the ISO 639-3 language code.
func (b Base) ISO3() string {
return b.langID.ISO3()
}
// IsPrivateUse reports whether this language code is reserved for private use.
func (b Base) IsPrivateUse() bool {
return b.langID.IsPrivateUse()
}
// Script is a 4-letter ISO 15924 code for representing scripts.
// It is idiomatically represented in title case.
type Script struct {
scriptID language.Script
}
// ParseScript parses a 4-letter ISO 15924 code.
// It returns a ValueError if s is a well-formed but unknown script identifier
// or another error if another error occurred.
func ParseScript(s string) (Script, error) {
sc, err := language.ParseScript(s)
return Script{sc}, err
}
// String returns the script code in title case.
// It returns "Zzzz" for an unspecified script.
func (s Script) String() string {
return s.scriptID.String()
}
// IsPrivateUse reports whether this script code is reserved for private use.
func (s Script) IsPrivateUse() bool {
return s.scriptID.IsPrivateUse()
}
// Region is an ISO 3166-1 or UN M.49 code for representing countries and regions.
type Region struct {
regionID language.Region
}
// EncodeM49 returns the Region for the given UN M.49 code.
// It returns an error if r is not a valid code.
func EncodeM49(r int) (Region, error) {
rid, err := language.EncodeM49(r)
return Region{rid}, err
}
// ParseRegion parses a 2- or 3-letter ISO 3166-1 or a UN M.49 code.
// It returns a ValueError if s is a well-formed but unknown region identifier
// or another error if another error occurred.
func ParseRegion(s string) (Region, error) {
r, err := language.ParseRegion(s)
return Region{r}, err
}
// String returns the BCP 47 representation for the region.
// It returns "ZZ" for an unspecified region.
func (r Region) String() string {
return r.regionID.String()
}
// ISO3 returns the 3-letter ISO code of r.
// Note that not all regions have a 3-letter ISO code.
// In such cases this method returns "ZZZ".
func (r Region) ISO3() string {
return r.regionID.String()
}
// M49 returns the UN M.49 encoding of r, or 0 if this encoding
// is not defined for r.
func (r Region) M49() int {
return r.regionID.M49()
}
// IsPrivateUse reports whether r has the ISO 3166 User-assigned status. This
// may include private-use tags that are assigned by CLDR and used in this
// implementation. So IsPrivateUse and IsCountry can be simultaneously true.
func (r Region) IsPrivateUse() bool {
return r.regionID.IsPrivateUse()
}
// IsCountry returns whether this region is a country or autonomous area. This
// includes non-standard definitions from CLDR.
func (r Region) IsCountry() bool {
return r.regionID.IsCountry()
}
// IsGroup returns whether this region defines a collection of regions. This
// includes non-standard definitions from CLDR.
func (r Region) IsGroup() bool {
return r.regionID.IsGroup()
}
// Contains returns whether Region c is contained by Region r. It returns true
// if c == r.
func (r Region) Contains(c Region) bool {
return r.regionID.Contains(c.regionID)
}
// TLD returns the country code top-level domain (ccTLD). UK is returned for GB.
// In all other cases it returns either the region itself or an error.
//
// This method may return an error for a region for which there exists a
// canonical form with a ccTLD. To get that ccTLD canonicalize r first. The
// region will already be canonicalized it was obtained from a Tag that was
// obtained using any of the default methods.
func (r Region) TLD() (Region, error) {
tld, err := r.regionID.TLD()
return Region{tld}, err
}
// Canonicalize returns the region or a possible replacement if the region is
// deprecated. It will not return a replacement for deprecated regions that
// are split into multiple regions.
func (r Region) Canonicalize() Region {
return Region{r.regionID.Canonicalize()}
}
// Variant represents a registered variant of a language as defined by BCP 47.
type Variant struct {
variant string
}
// ParseVariant parses and returns a Variant. An error is returned if s is not
// a valid variant.
func ParseVariant(s string) (Variant, error) {
v, err := language.ParseVariant(s)
return Variant{v.String()}, err
}
// String returns the string representation of the variant.
func (v Variant) String() string {
return v.variant
}

735
vendor/golang.org/x/text/language/match.go generated vendored
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@ -1,735 +0,0 @@
// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package language
import (
"errors"
"strings"
"golang.org/x/text/internal/language"
)
// A MatchOption configures a Matcher.
type MatchOption func(*matcher)
// PreferSameScript will, in the absence of a match, result in the first
// preferred tag with the same script as a supported tag to match this supported
// tag. The default is currently true, but this may change in the future.
func PreferSameScript(preferSame bool) MatchOption {
return func(m *matcher) { m.preferSameScript = preferSame }
}
// TODO(v1.0.0): consider making Matcher a concrete type, instead of interface.
// There doesn't seem to be too much need for multiple types.
// Making it a concrete type allows MatchStrings to be a method, which will
// improve its discoverability.
// MatchStrings parses and matches the given strings until one of them matches
// the language in the Matcher. A string may be an Accept-Language header as
// handled by ParseAcceptLanguage. The default language is returned if no
// other language matched.
func MatchStrings(m Matcher, lang ...string) (tag Tag, index int) {
for _, accept := range lang {
desired, _, err := ParseAcceptLanguage(accept)
if err != nil {
continue
}
if tag, index, conf := m.Match(desired...); conf != No {
return tag, index
}
}
tag, index, _ = m.Match()
return
}
// Matcher is the interface that wraps the Match method.
//
// Match returns the best match for any of the given tags, along with
// a unique index associated with the returned tag and a confidence
// score.
type Matcher interface {
Match(t ...Tag) (tag Tag, index int, c Confidence)
}
// Comprehends reports the confidence score for a speaker of a given language
// to being able to comprehend the written form of an alternative language.
func Comprehends(speaker, alternative Tag) Confidence {
_, _, c := NewMatcher([]Tag{alternative}).Match(speaker)
return c
}
// NewMatcher returns a Matcher that matches an ordered list of preferred tags
// against a list of supported tags based on written intelligibility, closeness
// of dialect, equivalence of subtags and various other rules. It is initialized
// with the list of supported tags. The first element is used as the default
// value in case no match is found.
//
// Its Match method matches the first of the given Tags to reach a certain
// confidence threshold. The tags passed to Match should therefore be specified
// in order of preference. Extensions are ignored for matching.
//
// The index returned by the Match method corresponds to the index of the
// matched tag in t, but is augmented with the Unicode extension ('u')of the
// corresponding preferred tag. This allows user locale options to be passed
// transparently.
func NewMatcher(t []Tag, options ...MatchOption) Matcher {
return newMatcher(t, options)
}
func (m *matcher) Match(want ...Tag) (t Tag, index int, c Confidence) {
var tt language.Tag
match, w, c := m.getBest(want...)
if match != nil {
tt, index = match.tag, match.index
} else {
// TODO: this should be an option
tt = m.default_.tag
if m.preferSameScript {
outer:
for _, w := range want {
script, _ := w.Script()
if script.scriptID == 0 {
// Don't do anything if there is no script, such as with
// private subtags.
continue
}
for i, h := range m.supported {
if script.scriptID == h.maxScript {
tt, index = h.tag, i
break outer
}
}
}
}
// TODO: select first language tag based on script.
}
if w.RegionID != tt.RegionID && w.RegionID != 0 {
if w.RegionID != 0 && tt.RegionID != 0 && tt.RegionID.Contains(w.RegionID) {
tt.RegionID = w.RegionID
tt.RemakeString()
} else if r := w.RegionID.String(); len(r) == 2 {
// TODO: also filter macro and deprecated.
tt, _ = tt.SetTypeForKey("rg", strings.ToLower(r)+"zzzz")
}
}
// Copy options from the user-provided tag into the result tag. This is hard
// to do after the fact, so we do it here.
// TODO: add in alternative variants to -u-va-.
// TODO: add preferred region to -u-rg-.
if e := w.Extensions(); len(e) > 0 {
b := language.Builder{}
b.SetTag(tt)
for _, e := range e {
b.AddExt(e)
}
tt = b.Make()
}
return makeTag(tt), index, c
}
// ErrMissingLikelyTagsData indicates no information was available
// to compute likely values of missing tags.
var ErrMissingLikelyTagsData = errors.New("missing likely tags data")
// func (t *Tag) setTagsFrom(id Tag) {
// t.LangID = id.LangID
// t.ScriptID = id.ScriptID
// t.RegionID = id.RegionID
// }
// Tag Matching
// CLDR defines an algorithm for finding the best match between two sets of language
// tags. The basic algorithm defines how to score a possible match and then find
// the match with the best score
// (see http://www.unicode.org/reports/tr35/#LanguageMatching).
// Using scoring has several disadvantages. The scoring obfuscates the importance of
// the various factors considered, making the algorithm harder to understand. Using
// scoring also requires the full score to be computed for each pair of tags.
//
// We will use a different algorithm which aims to have the following properties:
// - clarity on the precedence of the various selection factors, and
// - improved performance by allowing early termination of a comparison.
//
// Matching algorithm (overview)
// Input:
// - supported: a set of supported tags
// - default: the default tag to return in case there is no match
// - desired: list of desired tags, ordered by preference, starting with
// the most-preferred.
//
// Algorithm:
// 1) Set the best match to the lowest confidence level
// 2) For each tag in "desired":
// a) For each tag in "supported":
// 1) compute the match between the two tags.
// 2) if the match is better than the previous best match, replace it
// with the new match. (see next section)
// b) if the current best match is Exact and pin is true the result will be
// frozen to the language found thusfar, although better matches may
// still be found for the same language.
// 3) If the best match so far is below a certain threshold, return "default".
//
// Ranking:
// We use two phases to determine whether one pair of tags are a better match
// than another pair of tags. First, we determine a rough confidence level. If the
// levels are different, the one with the highest confidence wins.
// Second, if the rough confidence levels are identical, we use a set of tie-breaker
// rules.
//
// The confidence level of matching a pair of tags is determined by finding the
// lowest confidence level of any matches of the corresponding subtags (the
// result is deemed as good as its weakest link).
// We define the following levels:
// Exact - An exact match of a subtag, before adding likely subtags.
// MaxExact - An exact match of a subtag, after adding likely subtags.
// [See Note 2].
// High - High level of mutual intelligibility between different subtag
// variants.
// Low - Low level of mutual intelligibility between different subtag
// variants.
// No - No mutual intelligibility.
//
// The following levels can occur for each type of subtag:
// Base: Exact, MaxExact, High, Low, No
// Script: Exact, MaxExact [see Note 3], Low, No
// Region: Exact, MaxExact, High
// Variant: Exact, High
// Private: Exact, No
//
// Any result with a confidence level of Low or higher is deemed a possible match.
// Once a desired tag matches any of the supported tags with a level of MaxExact
// or higher, the next desired tag is not considered (see Step 2.b).
// Note that CLDR provides languageMatching data that defines close equivalence
// classes for base languages, scripts and regions.
//
// Tie-breaking
// If we get the same confidence level for two matches, we apply a sequence of
// tie-breaking rules. The first that succeeds defines the result. The rules are
// applied in the following order.
// 1) Original language was defined and was identical.
// 2) Original region was defined and was identical.
// 3) Distance between two maximized regions was the smallest.
// 4) Original script was defined and was identical.
// 5) Distance from want tag to have tag using the parent relation [see Note 5.]
// If there is still no winner after these rules are applied, the first match
// found wins.
//
// Notes:
// [2] In practice, as matching of Exact is done in a separate phase from
// matching the other levels, we reuse the Exact level to mean MaxExact in
// the second phase. As a consequence, we only need the levels defined by
// the Confidence type. The MaxExact confidence level is mapped to High in
// the public API.
// [3] We do not differentiate between maximized script values that were derived
// from suppressScript versus most likely tag data. We determined that in
// ranking the two, one ranks just after the other. Moreover, the two cannot
// occur concurrently. As a consequence, they are identical for practical
// purposes.
// [4] In case of deprecated, macro-equivalents and legacy mappings, we assign
// the MaxExact level to allow iw vs he to still be a closer match than
// en-AU vs en-US, for example.
// [5] In CLDR a locale inherits fields that are unspecified for this locale
// from its parent. Therefore, if a locale is a parent of another locale,
// it is a strong measure for closeness, especially when no other tie
// breaker rule applies. One could also argue it is inconsistent, for
// example, when pt-AO matches pt (which CLDR equates with pt-BR), even
// though its parent is pt-PT according to the inheritance rules.
//
// Implementation Details:
// There are several performance considerations worth pointing out. Most notably,
// we preprocess as much as possible (within reason) at the time of creation of a
// matcher. This includes:
// - creating a per-language map, which includes data for the raw base language
// and its canonicalized variant (if applicable),
// - expanding entries for the equivalence classes defined in CLDR's
// languageMatch data.
// The per-language map ensures that typically only a very small number of tags
// need to be considered. The pre-expansion of canonicalized subtags and
// equivalence classes reduces the amount of map lookups that need to be done at
// runtime.
// matcher keeps a set of supported language tags, indexed by language.
type matcher struct {
default_ *haveTag
supported []*haveTag
index map[language.Language]*matchHeader
passSettings bool
preferSameScript bool
}
// matchHeader has the lists of tags for exact matches and matches based on
// maximized and canonicalized tags for a given language.
type matchHeader struct {
haveTags []*haveTag
original bool
}
// haveTag holds a supported Tag and its maximized script and region. The maximized
// or canonicalized language is not stored as it is not needed during matching.
type haveTag struct {
tag language.Tag
// index of this tag in the original list of supported tags.
index int
// conf is the maximum confidence that can result from matching this haveTag.
// When conf < Exact this means it was inserted after applying a CLDR equivalence rule.
conf Confidence
// Maximized region and script.
maxRegion language.Region
maxScript language.Script
// altScript may be checked as an alternative match to maxScript. If altScript
// matches, the confidence level for this match is Low. Theoretically there
// could be multiple alternative scripts. This does not occur in practice.
altScript language.Script
// nextMax is the index of the next haveTag with the same maximized tags.
nextMax uint16
}
func makeHaveTag(tag language.Tag, index int) (haveTag, language.Language) {
max := tag
if tag.LangID != 0 || tag.RegionID != 0 || tag.ScriptID != 0 {
max, _ = canonicalize(All, max)
max, _ = max.Maximize()
max.RemakeString()
}
return haveTag{tag, index, Exact, max.RegionID, max.ScriptID, altScript(max.LangID, max.ScriptID), 0}, max.LangID
}
// altScript returns an alternative script that may match the given script with
// a low confidence. At the moment, the langMatch data allows for at most one
// script to map to another and we rely on this to keep the code simple.
func altScript(l language.Language, s language.Script) language.Script {
for _, alt := range matchScript {
// TODO: also match cases where language is not the same.
if (language.Language(alt.wantLang) == l || language.Language(alt.haveLang) == l) &&
language.Script(alt.haveScript) == s {
return language.Script(alt.wantScript)
}
}
return 0
}
// addIfNew adds a haveTag to the list of tags only if it is a unique tag.
// Tags that have the same maximized values are linked by index.
func (h *matchHeader) addIfNew(n haveTag, exact bool) {
h.original = h.original || exact
// Don't add new exact matches.
for _, v := range h.haveTags {
if equalsRest(v.tag, n.tag) {
return
}
}
// Allow duplicate maximized tags, but create a linked list to allow quickly
// comparing the equivalents and bail out.
for i, v := range h.haveTags {
if v.maxScript == n.maxScript &&
v.maxRegion == n.maxRegion &&
v.tag.VariantOrPrivateUseTags() == n.tag.VariantOrPrivateUseTags() {
for h.haveTags[i].nextMax != 0 {
i = int(h.haveTags[i].nextMax)
}
h.haveTags[i].nextMax = uint16(len(h.haveTags))
break
}
}
h.haveTags = append(h.haveTags, &n)
}
// header returns the matchHeader for the given language. It creates one if
// it doesn't already exist.
func (m *matcher) header(l language.Language) *matchHeader {
if h := m.index[l]; h != nil {
return h
}
h := &matchHeader{}
m.index[l] = h
return h
}
func toConf(d uint8) Confidence {
if d <= 10 {
return High
}
if d < 30 {
return Low
}
return No
}
// newMatcher builds an index for the given supported tags and returns it as
// a matcher. It also expands the index by considering various equivalence classes
// for a given tag.
func newMatcher(supported []Tag, options []MatchOption) *matcher {
m := &matcher{
index: make(map[language.Language]*matchHeader),
preferSameScript: true,
}
for _, o := range options {
o(m)
}
if len(supported) == 0 {
m.default_ = &haveTag{}
return m
}
// Add supported languages to the index. Add exact matches first to give
// them precedence.
for i, tag := range supported {
tt := tag.tag()
pair, _ := makeHaveTag(tt, i)
m.header(tt.LangID).addIfNew(pair, true)
m.supported = append(m.supported, &pair)
}
m.default_ = m.header(supported[0].lang()).haveTags[0]
// Keep these in two different loops to support the case that two equivalent
// languages are distinguished, such as iw and he.
for i, tag := range supported {
tt := tag.tag()
pair, max := makeHaveTag(tt, i)
if max != tt.LangID {
m.header(max).addIfNew(pair, true)
}
}
// update is used to add indexes in the map for equivalent languages.
// update will only add entries to original indexes, thus not computing any
// transitive relations.
update := func(want, have uint16, conf Confidence) {
if hh := m.index[language.Language(have)]; hh != nil {
if !hh.original {
return
}
hw := m.header(language.Language(want))
for _, ht := range hh.haveTags {
v := *ht
if conf < v.conf {
v.conf = conf
}
v.nextMax = 0 // this value needs to be recomputed
if v.altScript != 0 {
v.altScript = altScript(language.Language(want), v.maxScript)
}
hw.addIfNew(v, conf == Exact && hh.original)
}
}
}
// Add entries for languages with mutual intelligibility as defined by CLDR's
// languageMatch data.
for _, ml := range matchLang {
update(ml.want, ml.have, toConf(ml.distance))
if !ml.oneway {
update(ml.have, ml.want, toConf(ml.distance))
}
}
// Add entries for possible canonicalizations. This is an optimization to
// ensure that only one map lookup needs to be done at runtime per desired tag.
// First we match deprecated equivalents. If they are perfect equivalents
// (their canonicalization simply substitutes a different language code, but
// nothing else), the match confidence is Exact, otherwise it is High.
for i, lm := range language.AliasMap {
// If deprecated codes match and there is no fiddling with the script or
// or region, we consider it an exact match.
conf := Exact
if language.AliasTypes[i] != language.Macro {
if !isExactEquivalent(language.Language(lm.From)) {
conf = High
}
update(lm.To, lm.From, conf)
}
update(lm.From, lm.To, conf)
}
return m
}
// getBest gets the best matching tag in m for any of the given tags, taking into
// account the order of preference of the given tags.
func (m *matcher) getBest(want ...Tag) (got *haveTag, orig language.Tag, c Confidence) {
best := bestMatch{}
for i, ww := range want {
w := ww.tag()
var max language.Tag
// Check for exact match first.
h := m.index[w.LangID]
if w.LangID != 0 {
if h == nil {
continue
}
// Base language is defined.
max, _ = canonicalize(Legacy|Deprecated|Macro, w)
// A region that is added through canonicalization is stronger than
// a maximized region: set it in the original (e.g. mo -> ro-MD).
if w.RegionID != max.RegionID {
w.RegionID = max.RegionID
}
// TODO: should we do the same for scripts?
// See test case: en, sr, nl ; sh ; sr
max, _ = max.Maximize()
} else {
// Base language is not defined.
if h != nil {
for i := range h.haveTags {
have := h.haveTags[i]
if equalsRest(have.tag, w) {
return have, w, Exact
}
}
}
if w.ScriptID == 0 && w.RegionID == 0 {
// We skip all tags matching und for approximate matching, including
// private tags.
continue
}
max, _ = w.Maximize()
if h = m.index[max.LangID]; h == nil {
continue
}
}
pin := true
for _, t := range want[i+1:] {
if w.LangID == t.lang() {
pin = false
break
}
}
// Check for match based on maximized tag.
for i := range h.haveTags {
have := h.haveTags[i]
best.update(have, w, max.ScriptID, max.RegionID, pin)
if best.conf == Exact {
for have.nextMax != 0 {
have = h.haveTags[have.nextMax]
best.update(have, w, max.ScriptID, max.RegionID, pin)
}
return best.have, best.want, best.conf
}
}
}
if best.conf <= No {
if len(want) != 0 {
return nil, want[0].tag(), No
}
return nil, language.Tag{}, No
}
return best.have, best.want, best.conf
}
// bestMatch accumulates the best match so far.
type bestMatch struct {
have *haveTag
want language.Tag
conf Confidence
pinnedRegion language.Region
pinLanguage bool
sameRegionGroup bool
// Cached results from applying tie-breaking rules.
origLang bool
origReg bool
paradigmReg bool
regGroupDist uint8
origScript bool
}
// update updates the existing best match if the new pair is considered to be a
// better match. To determine if the given pair is a better match, it first
// computes the rough confidence level. If this surpasses the current match, it
// will replace it and update the tie-breaker rule cache. If there is a tie, it
// proceeds with applying a series of tie-breaker rules. If there is no
// conclusive winner after applying the tie-breaker rules, it leaves the current
// match as the preferred match.
//
// If pin is true and have and tag are a strong match, it will henceforth only
// consider matches for this language. This corresponds to the nothing that most
// users have a strong preference for the first defined language. A user can
// still prefer a second language over a dialect of the preferred language by
// explicitly specifying dialects, e.g. "en, nl, en-GB". In this case pin should
// be false.
func (m *bestMatch) update(have *haveTag, tag language.Tag, maxScript language.Script, maxRegion language.Region, pin bool) {
// Bail if the maximum attainable confidence is below that of the current best match.
c := have.conf
if c < m.conf {
return
}
// Don't change the language once we already have found an exact match.
if m.pinLanguage && tag.LangID != m.want.LangID {
return
}
// Pin the region group if we are comparing tags for the same language.
if tag.LangID == m.want.LangID && m.sameRegionGroup {
_, sameGroup := regionGroupDist(m.pinnedRegion, have.maxRegion, have.maxScript, m.want.LangID)
if !sameGroup {
return
}
}
if c == Exact && have.maxScript == maxScript {
// If there is another language and then another entry of this language,
// don't pin anything, otherwise pin the language.
m.pinLanguage = pin
}
if equalsRest(have.tag, tag) {
} else if have.maxScript != maxScript {
// There is usually very little comprehension between different scripts.
// In a few cases there may still be Low comprehension. This possibility
// is pre-computed and stored in have.altScript.
if Low < m.conf || have.altScript != maxScript {
return
}
c = Low
} else if have.maxRegion != maxRegion {
if High < c {
// There is usually a small difference between languages across regions.
c = High
}
}
// We store the results of the computations of the tie-breaker rules along
// with the best match. There is no need to do the checks once we determine
// we have a winner, but we do still need to do the tie-breaker computations.
// We use "beaten" to keep track if we still need to do the checks.
beaten := false // true if the new pair defeats the current one.
if c != m.conf {
if c < m.conf {
return
}
beaten = true
}
// Tie-breaker rules:
// We prefer if the pre-maximized language was specified and identical.
origLang := have.tag.LangID == tag.LangID && tag.LangID != 0
if !beaten && m.origLang != origLang {
if m.origLang {
return
}
beaten = true
}
// We prefer if the pre-maximized region was specified and identical.
origReg := have.tag.RegionID == tag.RegionID && tag.RegionID != 0
if !beaten && m.origReg != origReg {
if m.origReg {
return
}
beaten = true
}
regGroupDist, sameGroup := regionGroupDist(have.maxRegion, maxRegion, maxScript, tag.LangID)
if !beaten && m.regGroupDist != regGroupDist {
if regGroupDist > m.regGroupDist {
return
}
beaten = true
}
paradigmReg := isParadigmLocale(tag.LangID, have.maxRegion)
if !beaten && m.paradigmReg != paradigmReg {
if !paradigmReg {
return
}
beaten = true
}
// Next we prefer if the pre-maximized script was specified and identical.
origScript := have.tag.ScriptID == tag.ScriptID && tag.ScriptID != 0
if !beaten && m.origScript != origScript {
if m.origScript {
return
}
beaten = true
}
// Update m to the newly found best match.
if beaten {
m.have = have
m.want = tag
m.conf = c
m.pinnedRegion = maxRegion
m.sameRegionGroup = sameGroup
m.origLang = origLang
m.origReg = origReg
m.paradigmReg = paradigmReg
m.origScript = origScript
m.regGroupDist = regGroupDist
}
}
func isParadigmLocale(lang language.Language, r language.Region) bool {
for _, e := range paradigmLocales {
if language.Language(e[0]) == lang && (r == language.Region(e[1]) || r == language.Region(e[2])) {
return true
}
}
return false
}
// regionGroupDist computes the distance between two regions based on their
// CLDR grouping.
func regionGroupDist(a, b language.Region, script language.Script, lang language.Language) (dist uint8, same bool) {
const defaultDistance = 4
aGroup := uint(regionToGroups[a]) << 1
bGroup := uint(regionToGroups[b]) << 1
for _, ri := range matchRegion {
if language.Language(ri.lang) == lang && (ri.script == 0 || language.Script(ri.script) == script) {
group := uint(1 << (ri.group &^ 0x80))
if 0x80&ri.group == 0 {
if aGroup&bGroup&group != 0 { // Both regions are in the group.
return ri.distance, ri.distance == defaultDistance
}
} else {
if (aGroup|bGroup)&group == 0 { // Both regions are not in the group.
return ri.distance, ri.distance == defaultDistance
}
}
}
}
return defaultDistance, true
}
// equalsRest compares everything except the language.
func equalsRest(a, b language.Tag) bool {
// TODO: don't include extensions in this comparison. To do this efficiently,
// though, we should handle private tags separately.
return a.ScriptID == b.ScriptID && a.RegionID == b.RegionID && a.VariantOrPrivateUseTags() == b.VariantOrPrivateUseTags()
}
// isExactEquivalent returns true if canonicalizing the language will not alter
// the script or region of a tag.
func isExactEquivalent(l language.Language) bool {
for _, o := range notEquivalent {
if o == l {
return false
}
}
return true
}
var notEquivalent []language.Language
func init() {
// Create a list of all languages for which canonicalization may alter the
// script or region.
for _, lm := range language.AliasMap {
tag := language.Tag{LangID: language.Language(lm.From)}
if tag, _ = canonicalize(All, tag); tag.ScriptID != 0 || tag.RegionID != 0 {
notEquivalent = append(notEquivalent, language.Language(lm.From))
}
}
// Maximize undefined regions of paradigm locales.
for i, v := range paradigmLocales {
t := language.Tag{LangID: language.Language(v[0])}
max, _ := t.Maximize()
if v[1] == 0 {
paradigmLocales[i][1] = uint16(max.RegionID)
}
if v[2] == 0 {
paradigmLocales[i][2] = uint16(max.RegionID)
}
}
}

228
vendor/golang.org/x/text/language/parse.go generated vendored
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@ -1,228 +0,0 @@
// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package language
import (
"errors"
"strconv"
"strings"
"golang.org/x/text/internal/language"
)
// ValueError is returned by any of the parsing functions when the
// input is well-formed but the respective subtag is not recognized
// as a valid value.
type ValueError interface {
error
// Subtag returns the subtag for which the error occurred.
Subtag() string
}
// Parse parses the given BCP 47 string and returns a valid Tag. If parsing
// failed it returns an error and any part of the tag that could be parsed.
// If parsing succeeded but an unknown value was found, it returns
// ValueError. The Tag returned in this case is just stripped of the unknown
// value. All other values are preserved. It accepts tags in the BCP 47 format
// and extensions to this standard defined in
// http://www.unicode.org/reports/tr35/#Unicode_Language_and_Locale_Identifiers.
// The resulting tag is canonicalized using the default canonicalization type.
func Parse(s string) (t Tag, err error) {
return Default.Parse(s)
}
// Parse parses the given BCP 47 string and returns a valid Tag. If parsing
// failed it returns an error and any part of the tag that could be parsed.
// If parsing succeeded but an unknown value was found, it returns
// ValueError. The Tag returned in this case is just stripped of the unknown
// value. All other values are preserved. It accepts tags in the BCP 47 format
// and extensions to this standard defined in
// http://www.unicode.org/reports/tr35/#Unicode_Language_and_Locale_Identifiers.
// The resulting tag is canonicalized using the the canonicalization type c.
func (c CanonType) Parse(s string) (t Tag, err error) {
tt, err := language.Parse(s)
if err != nil {
return makeTag(tt), err
}
tt, changed := canonicalize(c, tt)
if changed {
tt.RemakeString()
}
return makeTag(tt), err
}
// Compose creates a Tag from individual parts, which may be of type Tag, Base,
// Script, Region, Variant, []Variant, Extension, []Extension or error. If a
// Base, Script or Region or slice of type Variant or Extension is passed more
// than once, the latter will overwrite the former. Variants and Extensions are
// accumulated, but if two extensions of the same type are passed, the latter
// will replace the former. For -u extensions, though, the key-type pairs are
// added, where later values overwrite older ones. A Tag overwrites all former
// values and typically only makes sense as the first argument. The resulting
// tag is returned after canonicalizing using the Default CanonType. If one or
// more errors are encountered, one of the errors is returned.
func Compose(part ...interface{}) (t Tag, err error) {
return Default.Compose(part...)
}
// Compose creates a Tag from individual parts, which may be of type Tag, Base,
// Script, Region, Variant, []Variant, Extension, []Extension or error. If a
// Base, Script or Region or slice of type Variant or Extension is passed more
// than once, the latter will overwrite the former. Variants and Extensions are
// accumulated, but if two extensions of the same type are passed, the latter
// will replace the former. For -u extensions, though, the key-type pairs are
// added, where later values overwrite older ones. A Tag overwrites all former
// values and typically only makes sense as the first argument. The resulting
// tag is returned after canonicalizing using CanonType c. If one or more errors
// are encountered, one of the errors is returned.
func (c CanonType) Compose(part ...interface{}) (t Tag, err error) {
var b language.Builder
if err = update(&b, part...); err != nil {
return und, err
}
b.Tag, _ = canonicalize(c, b.Tag)
return makeTag(b.Make()), err
}
var errInvalidArgument = errors.New("invalid Extension or Variant")
func update(b *language.Builder, part ...interface{}) (err error) {
for _, x := range part {
switch v := x.(type) {
case Tag:
b.SetTag(v.tag())
case Base:
b.Tag.LangID = v.langID
case Script:
b.Tag.ScriptID = v.scriptID
case Region:
b.Tag.RegionID = v.regionID
case Variant:
if v.variant == "" {
err = errInvalidArgument
break
}
b.AddVariant(v.variant)
case Extension:
if v.s == "" {
err = errInvalidArgument
break
}
b.SetExt(v.s)
case []Variant:
b.ClearVariants()
for _, v := range v {
b.AddVariant(v.variant)
}
case []Extension:
b.ClearExtensions()
for _, e := range v {
b.SetExt(e.s)
}
// TODO: support parsing of raw strings based on morphology or just extensions?
case error:
if v != nil {
err = v
}
}
}
return
}
var errInvalidWeight = errors.New("ParseAcceptLanguage: invalid weight")
// ParseAcceptLanguage parses the contents of an Accept-Language header as
// defined in http://www.ietf.org/rfc/rfc2616.txt and returns a list of Tags and
// a list of corresponding quality weights. It is more permissive than RFC 2616
// and may return non-nil slices even if the input is not valid.
// The Tags will be sorted by highest weight first and then by first occurrence.
// Tags with a weight of zero will be dropped. An error will be returned if the
// input could not be parsed.
func ParseAcceptLanguage(s string) (tag []Tag, q []float32, err error) {
var entry string
for s != "" {
if entry, s = split(s, ','); entry == "" {
continue
}
entry, weight := split(entry, ';')
// Scan the language.
t, err := Parse(entry)
if err != nil {
id, ok := acceptFallback[entry]
if !ok {
return nil, nil, err
}
t = makeTag(language.Tag{LangID: id})
}
// Scan the optional weight.
w := 1.0
if weight != "" {
weight = consume(weight, 'q')
weight = consume(weight, '=')
// consume returns the empty string when a token could not be
// consumed, resulting in an error for ParseFloat.
if w, err = strconv.ParseFloat(weight, 32); err != nil {
return nil, nil, errInvalidWeight
}
// Drop tags with a quality weight of 0.
if w <= 0 {
continue
}
}
tag = append(tag, t)
q = append(q, float32(w))
}
sortStable(&tagSort{tag, q})
return tag, q, nil
}
// consume removes a leading token c from s and returns the result or the empty
// string if there is no such token.
func consume(s string, c byte) string {
if s == "" || s[0] != c {
return ""
}
return strings.TrimSpace(s[1:])
}
func split(s string, c byte) (head, tail string) {
if i := strings.IndexByte(s, c); i >= 0 {
return strings.TrimSpace(s[:i]), strings.TrimSpace(s[i+1:])
}
return strings.TrimSpace(s), ""
}
// Add hack mapping to deal with a small number of cases that that occur
// in Accept-Language (with reasonable frequency).
var acceptFallback = map[string]language.Language{
"english": _en,
"deutsch": _de,
"italian": _it,
"french": _fr,
"*": _mul, // defined in the spec to match all languages.
}
type tagSort struct {
tag []Tag
q []float32
}
func (s *tagSort) Len() int {
return len(s.q)
}
func (s *tagSort) Less(i, j int) bool {
return s.q[i] > s.q[j]
}
func (s *tagSort) Swap(i, j int) {
s.tag[i], s.tag[j] = s.tag[j], s.tag[i]
s.q[i], s.q[j] = s.q[j], s.q[i]
}

298
vendor/golang.org/x/text/language/tables.go generated vendored
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@ -1,298 +0,0 @@
// Code generated by running "go generate" in golang.org/x/text. DO NOT EDIT.
package language
// CLDRVersion is the CLDR version from which the tables in this package are derived.
const CLDRVersion = "32"
const (
_de = 269
_en = 313
_fr = 350
_it = 505
_mo = 784
_no = 879
_nb = 839
_pt = 960
_sh = 1031
_mul = 806
_und = 0
)
const (
_001 = 1
_419 = 31
_BR = 65
_CA = 73
_ES = 110
_GB = 123
_MD = 188
_PT = 238
_UK = 306
_US = 309
_ZZ = 357
_XA = 323
_XC = 325
_XK = 333
)
const (
_Latn = 87
_Hani = 54
_Hans = 56
_Hant = 57
_Qaaa = 139
_Qaai = 147
_Qabx = 188
_Zinh = 236
_Zyyy = 241
_Zzzz = 242
)
var regionToGroups = []uint8{ // 357 elements
// Entry 0 - 3F
0x00, 0x00, 0x00, 0x04, 0x04, 0x00, 0x00, 0x04,
0x00, 0x00, 0x00, 0x00, 0x04, 0x04, 0x04, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x04,
0x00, 0x00, 0x00, 0x00, 0x00, 0x04, 0x04, 0x00,
0x00, 0x04, 0x00, 0x00, 0x04, 0x01, 0x00, 0x00,
0x04, 0x00, 0x00, 0x00, 0x04, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x04, 0x04, 0x00, 0x04,
// Entry 40 - 7F
0x04, 0x04, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00,
0x04, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x04, 0x00, 0x00, 0x04, 0x00, 0x04, 0x00,
0x00, 0x04, 0x00, 0x04, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x04, 0x04, 0x00, 0x08,
0x00, 0x04, 0x00, 0x00, 0x08, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x04, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x04, 0x00, 0x04, 0x00,
// Entry 80 - BF
0x00, 0x00, 0x04, 0x00, 0x00, 0x04, 0x00, 0x00,
0x00, 0x04, 0x01, 0x00, 0x04, 0x02, 0x00, 0x04,
0x00, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x04, 0x00, 0x00, 0x00, 0x04, 0x00, 0x00,
0x00, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x08, 0x08, 0x00, 0x00, 0x00, 0x04, 0x00,
// Entry C0 - FF
0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x01,
0x04, 0x08, 0x04, 0x00, 0x00, 0x00, 0x00, 0x04,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x04, 0x00, 0x04, 0x00, 0x00, 0x00,
0x00, 0x00, 0x04, 0x00, 0x05, 0x00, 0x00, 0x00,
0x00, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
// Entry 100 - 13F
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x04, 0x00,
0x00, 0x00, 0x04, 0x04, 0x00, 0x00, 0x00, 0x04,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x08, 0x00, 0x00, 0x00, 0x04, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x01, 0x00, 0x05, 0x04, 0x00,
0x00, 0x04, 0x00, 0x04, 0x04, 0x05, 0x00, 0x00,
// Entry 140 - 17F
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00,
} // Size: 381 bytes
var paradigmLocales = [][3]uint16{ // 3 elements
0: [3]uint16{0x139, 0x0, 0x7b},
1: [3]uint16{0x13e, 0x0, 0x1f},
2: [3]uint16{0x3c0, 0x41, 0xee},
} // Size: 42 bytes
type mutualIntelligibility struct {
want uint16
have uint16
distance uint8
oneway bool
}
type scriptIntelligibility struct {
wantLang uint16
haveLang uint16
wantScript uint8
haveScript uint8
distance uint8
}
type regionIntelligibility struct {
lang uint16
script uint8
group uint8
distance uint8
}
// matchLang holds pairs of langIDs of base languages that are typically
// mutually intelligible. Each pair is associated with a confidence and
// whether the intelligibility goes one or both ways.
var matchLang = []mutualIntelligibility{ // 113 elements
0: {want: 0x1d1, have: 0xb7, distance: 0x4, oneway: false},
1: {want: 0x407, have: 0xb7, distance: 0x4, oneway: false},
2: {want: 0x407, have: 0x1d1, distance: 0x4, oneway: false},
3: {want: 0x407, have: 0x432, distance: 0x4, oneway: false},
4: {want: 0x43a, have: 0x1, distance: 0x4, oneway: false},
5: {want: 0x1a3, have: 0x10d, distance: 0x4, oneway: true},
6: {want: 0x295, have: 0x10d, distance: 0x4, oneway: true},
7: {want: 0x101, have: 0x36f, distance: 0x8, oneway: false},
8: {want: 0x101, have: 0x347, distance: 0x8, oneway: false},
9: {want: 0x5, have: 0x3e2, distance: 0xa, oneway: true},
10: {want: 0xd, have: 0x139, distance: 0xa, oneway: true},
11: {want: 0x16, have: 0x367, distance: 0xa, oneway: true},
12: {want: 0x21, have: 0x139, distance: 0xa, oneway: true},
13: {want: 0x56, have: 0x13e, distance: 0xa, oneway: true},
14: {want: 0x58, have: 0x3e2, distance: 0xa, oneway: true},
15: {want: 0x71, have: 0x3e2, distance: 0xa, oneway: true},
16: {want: 0x75, have: 0x139, distance: 0xa, oneway: true},
17: {want: 0x82, have: 0x1be, distance: 0xa, oneway: true},
18: {want: 0xa5, have: 0x139, distance: 0xa, oneway: true},
19: {want: 0xb2, have: 0x15e, distance: 0xa, oneway: true},
20: {want: 0xdd, have: 0x153, distance: 0xa, oneway: true},
21: {want: 0xe5, have: 0x139, distance: 0xa, oneway: true},
22: {want: 0xe9, have: 0x3a, distance: 0xa, oneway: true},
23: {want: 0xf0, have: 0x15e, distance: 0xa, oneway: true},
24: {want: 0xf9, have: 0x15e, distance: 0xa, oneway: true},
25: {want: 0x100, have: 0x139, distance: 0xa, oneway: true},
26: {want: 0x130, have: 0x139, distance: 0xa, oneway: true},
27: {want: 0x13c, have: 0x139, distance: 0xa, oneway: true},
28: {want: 0x140, have: 0x151, distance: 0xa, oneway: true},
29: {want: 0x145, have: 0x13e, distance: 0xa, oneway: true},
30: {want: 0x158, have: 0x101, distance: 0xa, oneway: true},
31: {want: 0x16d, have: 0x367, distance: 0xa, oneway: true},
32: {want: 0x16e, have: 0x139, distance: 0xa, oneway: true},
33: {want: 0x16f, have: 0x139, distance: 0xa, oneway: true},
34: {want: 0x17e, have: 0x139, distance: 0xa, oneway: true},
35: {want: 0x190, have: 0x13e, distance: 0xa, oneway: true},
36: {want: 0x194, have: 0x13e, distance: 0xa, oneway: true},
37: {want: 0x1a4, have: 0x1be, distance: 0xa, oneway: true},
38: {want: 0x1b4, have: 0x139, distance: 0xa, oneway: true},
39: {want: 0x1b8, have: 0x139, distance: 0xa, oneway: true},
40: {want: 0x1d4, have: 0x15e, distance: 0xa, oneway: true},
41: {want: 0x1d7, have: 0x3e2, distance: 0xa, oneway: true},
42: {want: 0x1d9, have: 0x139, distance: 0xa, oneway: true},
43: {want: 0x1e7, have: 0x139, distance: 0xa, oneway: true},
44: {want: 0x1f8, have: 0x139, distance: 0xa, oneway: true},
45: {want: 0x20e, have: 0x1e1, distance: 0xa, oneway: true},
46: {want: 0x210, have: 0x139, distance: 0xa, oneway: true},
47: {want: 0x22d, have: 0x15e, distance: 0xa, oneway: true},
48: {want: 0x242, have: 0x3e2, distance: 0xa, oneway: true},
49: {want: 0x24a, have: 0x139, distance: 0xa, oneway: true},
50: {want: 0x251, have: 0x139, distance: 0xa, oneway: true},
51: {want: 0x265, have: 0x139, distance: 0xa, oneway: true},
52: {want: 0x274, have: 0x48a, distance: 0xa, oneway: true},
53: {want: 0x28a, have: 0x3e2, distance: 0xa, oneway: true},
54: {want: 0x28e, have: 0x1f9, distance: 0xa, oneway: true},
55: {want: 0x2a3, have: 0x139, distance: 0xa, oneway: true},
56: {want: 0x2b5, have: 0x15e, distance: 0xa, oneway: true},
57: {want: 0x2b8, have: 0x139, distance: 0xa, oneway: true},
58: {want: 0x2be, have: 0x139, distance: 0xa, oneway: true},
59: {want: 0x2c3, have: 0x15e, distance: 0xa, oneway: true},
60: {want: 0x2ed, have: 0x139, distance: 0xa, oneway: true},
61: {want: 0x2f1, have: 0x15e, distance: 0xa, oneway: true},
62: {want: 0x2fa, have: 0x139, distance: 0xa, oneway: true},
63: {want: 0x2ff, have: 0x7e, distance: 0xa, oneway: true},
64: {want: 0x304, have: 0x139, distance: 0xa, oneway: true},
65: {want: 0x30b, have: 0x3e2, distance: 0xa, oneway: true},
66: {want: 0x31b, have: 0x1be, distance: 0xa, oneway: true},
67: {want: 0x31f, have: 0x1e1, distance: 0xa, oneway: true},
68: {want: 0x320, have: 0x139, distance: 0xa, oneway: true},
69: {want: 0x331, have: 0x139, distance: 0xa, oneway: true},
70: {want: 0x351, have: 0x139, distance: 0xa, oneway: true},
71: {want: 0x36a, have: 0x347, distance: 0xa, oneway: false},
72: {want: 0x36a, have: 0x36f, distance: 0xa, oneway: true},
73: {want: 0x37a, have: 0x139, distance: 0xa, oneway: true},
74: {want: 0x387, have: 0x139, distance: 0xa, oneway: true},
75: {want: 0x389, have: 0x139, distance: 0xa, oneway: true},
76: {want: 0x38b, have: 0x15e, distance: 0xa, oneway: true},
77: {want: 0x390, have: 0x139, distance: 0xa, oneway: true},
78: {want: 0x395, have: 0x139, distance: 0xa, oneway: true},
79: {want: 0x39d, have: 0x139, distance: 0xa, oneway: true},
80: {want: 0x3a5, have: 0x139, distance: 0xa, oneway: true},
81: {want: 0x3be, have: 0x139, distance: 0xa, oneway: true},
82: {want: 0x3c4, have: 0x13e, distance: 0xa, oneway: true},
83: {want: 0x3d4, have: 0x10d, distance: 0xa, oneway: true},
84: {want: 0x3d9, have: 0x139, distance: 0xa, oneway: true},
85: {want: 0x3e5, have: 0x15e, distance: 0xa, oneway: true},
86: {want: 0x3e9, have: 0x1be, distance: 0xa, oneway: true},
87: {want: 0x3fa, have: 0x139, distance: 0xa, oneway: true},
88: {want: 0x40c, have: 0x139, distance: 0xa, oneway: true},
89: {want: 0x423, have: 0x139, distance: 0xa, oneway: true},
90: {want: 0x429, have: 0x139, distance: 0xa, oneway: true},
91: {want: 0x431, have: 0x139, distance: 0xa, oneway: true},
92: {want: 0x43b, have: 0x139, distance: 0xa, oneway: true},
93: {want: 0x43e, have: 0x1e1, distance: 0xa, oneway: true},
94: {want: 0x445, have: 0x139, distance: 0xa, oneway: true},
95: {want: 0x450, have: 0x139, distance: 0xa, oneway: true},
96: {want: 0x461, have: 0x139, distance: 0xa, oneway: true},
97: {want: 0x467, have: 0x3e2, distance: 0xa, oneway: true},
98: {want: 0x46f, have: 0x139, distance: 0xa, oneway: true},
99: {want: 0x476, have: 0x3e2, distance: 0xa, oneway: true},
100: {want: 0x3883, have: 0x139, distance: 0xa, oneway: true},
101: {want: 0x480, have: 0x139, distance: 0xa, oneway: true},
102: {want: 0x482, have: 0x139, distance: 0xa, oneway: true},
103: {want: 0x494, have: 0x3e2, distance: 0xa, oneway: true},
104: {want: 0x49d, have: 0x139, distance: 0xa, oneway: true},
105: {want: 0x4ac, have: 0x529, distance: 0xa, oneway: true},
106: {want: 0x4b4, have: 0x139, distance: 0xa, oneway: true},
107: {want: 0x4bc, have: 0x3e2, distance: 0xa, oneway: true},
108: {want: 0x4e5, have: 0x15e, distance: 0xa, oneway: true},
109: {want: 0x4f2, have: 0x139, distance: 0xa, oneway: true},
110: {want: 0x512, have: 0x139, distance: 0xa, oneway: true},
111: {want: 0x518, have: 0x139, distance: 0xa, oneway: true},
112: {want: 0x52f, have: 0x139, distance: 0xa, oneway: true},
} // Size: 702 bytes
// matchScript holds pairs of scriptIDs where readers of one script
// can typically also read the other. Each is associated with a confidence.
var matchScript = []scriptIntelligibility{ // 26 elements
0: {wantLang: 0x432, haveLang: 0x432, wantScript: 0x57, haveScript: 0x1f, distance: 0x5},
1: {wantLang: 0x432, haveLang: 0x432, wantScript: 0x1f, haveScript: 0x57, distance: 0x5},
2: {wantLang: 0x58, haveLang: 0x3e2, wantScript: 0x57, haveScript: 0x1f, distance: 0xa},
3: {wantLang: 0xa5, haveLang: 0x139, wantScript: 0xe, haveScript: 0x57, distance: 0xa},
4: {wantLang: 0x1d7, haveLang: 0x3e2, wantScript: 0x8, haveScript: 0x1f, distance: 0xa},
5: {wantLang: 0x210, haveLang: 0x139, wantScript: 0x2b, haveScript: 0x57, distance: 0xa},
6: {wantLang: 0x24a, haveLang: 0x139, wantScript: 0x4b, haveScript: 0x57, distance: 0xa},
7: {wantLang: 0x251, haveLang: 0x139, wantScript: 0x4f, haveScript: 0x57, distance: 0xa},
8: {wantLang: 0x2b8, haveLang: 0x139, wantScript: 0x54, haveScript: 0x57, distance: 0xa},
9: {wantLang: 0x304, haveLang: 0x139, wantScript: 0x6b, haveScript: 0x57, distance: 0xa},
10: {wantLang: 0x331, haveLang: 0x139, wantScript: 0x72, haveScript: 0x57, distance: 0xa},
11: {wantLang: 0x351, haveLang: 0x139, wantScript: 0x21, haveScript: 0x57, distance: 0xa},
12: {wantLang: 0x395, haveLang: 0x139, wantScript: 0x7d, haveScript: 0x57, distance: 0xa},
13: {wantLang: 0x39d, haveLang: 0x139, wantScript: 0x33, haveScript: 0x57, distance: 0xa},
14: {wantLang: 0x3be, haveLang: 0x139, wantScript: 0x5, haveScript: 0x57, distance: 0xa},
15: {wantLang: 0x3fa, haveLang: 0x139, wantScript: 0x5, haveScript: 0x57, distance: 0xa},
16: {wantLang: 0x40c, haveLang: 0x139, wantScript: 0xca, haveScript: 0x57, distance: 0xa},
17: {wantLang: 0x450, haveLang: 0x139, wantScript: 0xd7, haveScript: 0x57, distance: 0xa},
18: {wantLang: 0x461, haveLang: 0x139, wantScript: 0xda, haveScript: 0x57, distance: 0xa},
19: {wantLang: 0x46f, haveLang: 0x139, wantScript: 0x29, haveScript: 0x57, distance: 0xa},
20: {wantLang: 0x476, haveLang: 0x3e2, wantScript: 0x57, haveScript: 0x1f, distance: 0xa},
21: {wantLang: 0x4b4, haveLang: 0x139, wantScript: 0x5, haveScript: 0x57, distance: 0xa},
22: {wantLang: 0x4bc, haveLang: 0x3e2, wantScript: 0x57, haveScript: 0x1f, distance: 0xa},
23: {wantLang: 0x512, haveLang: 0x139, wantScript: 0x3b, haveScript: 0x57, distance: 0xa},
24: {wantLang: 0x529, haveLang: 0x529, wantScript: 0x38, haveScript: 0x39, distance: 0xf},
25: {wantLang: 0x529, haveLang: 0x529, wantScript: 0x39, haveScript: 0x38, distance: 0x13},
} // Size: 232 bytes
var matchRegion = []regionIntelligibility{ // 15 elements
0: {lang: 0x3a, script: 0x0, group: 0x4, distance: 0x4},
1: {lang: 0x3a, script: 0x0, group: 0x84, distance: 0x4},
2: {lang: 0x139, script: 0x0, group: 0x1, distance: 0x4},
3: {lang: 0x139, script: 0x0, group: 0x81, distance: 0x4},
4: {lang: 0x13e, script: 0x0, group: 0x3, distance: 0x4},
5: {lang: 0x13e, script: 0x0, group: 0x83, distance: 0x4},
6: {lang: 0x3c0, script: 0x0, group: 0x3, distance: 0x4},
7: {lang: 0x3c0, script: 0x0, group: 0x83, distance: 0x4},
8: {lang: 0x529, script: 0x39, group: 0x2, distance: 0x4},
9: {lang: 0x529, script: 0x39, group: 0x82, distance: 0x4},
10: {lang: 0x3a, script: 0x0, group: 0x80, distance: 0x5},
11: {lang: 0x139, script: 0x0, group: 0x80, distance: 0x5},
12: {lang: 0x13e, script: 0x0, group: 0x80, distance: 0x5},
13: {lang: 0x3c0, script: 0x0, group: 0x80, distance: 0x5},
14: {lang: 0x529, script: 0x39, group: 0x80, distance: 0x5},
} // Size: 114 bytes
// Total table size 1471 bytes (1KiB); checksum: 4CB1CD46

145
vendor/golang.org/x/text/language/tags.go generated vendored
View File

@ -1,145 +0,0 @@
// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package language
import "golang.org/x/text/internal/language/compact"
// TODO: Various sets of commonly use tags and regions.
// MustParse is like Parse, but panics if the given BCP 47 tag cannot be parsed.
// It simplifies safe initialization of Tag values.
func MustParse(s string) Tag {
t, err := Parse(s)
if err != nil {
panic(err)
}
return t
}
// MustParse is like Parse, but panics if the given BCP 47 tag cannot be parsed.
// It simplifies safe initialization of Tag values.
func (c CanonType) MustParse(s string) Tag {
t, err := c.Parse(s)
if err != nil {
panic(err)
}
return t
}
// MustParseBase is like ParseBase, but panics if the given base cannot be parsed.
// It simplifies safe initialization of Base values.
func MustParseBase(s string) Base {
b, err := ParseBase(s)
if err != nil {
panic(err)
}
return b
}
// MustParseScript is like ParseScript, but panics if the given script cannot be
// parsed. It simplifies safe initialization of Script values.
func MustParseScript(s string) Script {
scr, err := ParseScript(s)
if err != nil {
panic(err)
}
return scr
}
// MustParseRegion is like ParseRegion, but panics if the given region cannot be
// parsed. It simplifies safe initialization of Region values.
func MustParseRegion(s string) Region {
r, err := ParseRegion(s)
if err != nil {
panic(err)
}
return r
}
var (
und = Tag{}
Und Tag = Tag{}
Afrikaans Tag = Tag(compact.Afrikaans)
Amharic Tag = Tag(compact.Amharic)
Arabic Tag = Tag(compact.Arabic)
ModernStandardArabic Tag = Tag(compact.ModernStandardArabic)
Azerbaijani Tag = Tag(compact.Azerbaijani)
Bulgarian Tag = Tag(compact.Bulgarian)
Bengali Tag = Tag(compact.Bengali)
Catalan Tag = Tag(compact.Catalan)
Czech Tag = Tag(compact.Czech)
Danish Tag = Tag(compact.Danish)
German Tag = Tag(compact.German)
Greek Tag = Tag(compact.Greek)
English Tag = Tag(compact.English)
AmericanEnglish Tag = Tag(compact.AmericanEnglish)
BritishEnglish Tag = Tag(compact.BritishEnglish)
Spanish Tag = Tag(compact.Spanish)
EuropeanSpanish Tag = Tag(compact.EuropeanSpanish)
LatinAmericanSpanish Tag = Tag(compact.LatinAmericanSpanish)
Estonian Tag = Tag(compact.Estonian)
Persian Tag = Tag(compact.Persian)
Finnish Tag = Tag(compact.Finnish)
Filipino Tag = Tag(compact.Filipino)
French Tag = Tag(compact.French)
CanadianFrench Tag = Tag(compact.CanadianFrench)
Gujarati Tag = Tag(compact.Gujarati)
Hebrew Tag = Tag(compact.Hebrew)
Hindi Tag = Tag(compact.Hindi)
Croatian Tag = Tag(compact.Croatian)
Hungarian Tag = Tag(compact.Hungarian)
Armenian Tag = Tag(compact.Armenian)
Indonesian Tag = Tag(compact.Indonesian)
Icelandic Tag = Tag(compact.Icelandic)
Italian Tag = Tag(compact.Italian)
Japanese Tag = Tag(compact.Japanese)
Georgian Tag = Tag(compact.Georgian)
Kazakh Tag = Tag(compact.Kazakh)
Khmer Tag = Tag(compact.Khmer)
Kannada Tag = Tag(compact.Kannada)
Korean Tag = Tag(compact.Korean)
Kirghiz Tag = Tag(compact.Kirghiz)
Lao Tag = Tag(compact.Lao)
Lithuanian Tag = Tag(compact.Lithuanian)
Latvian Tag = Tag(compact.Latvian)
Macedonian Tag = Tag(compact.Macedonian)
Malayalam Tag = Tag(compact.Malayalam)
Mongolian Tag = Tag(compact.Mongolian)
Marathi Tag = Tag(compact.Marathi)
Malay Tag = Tag(compact.Malay)
Burmese Tag = Tag(compact.Burmese)
Nepali Tag = Tag(compact.Nepali)
Dutch Tag = Tag(compact.Dutch)
Norwegian Tag = Tag(compact.Norwegian)
Punjabi Tag = Tag(compact.Punjabi)
Polish Tag = Tag(compact.Polish)
Portuguese Tag = Tag(compact.Portuguese)
BrazilianPortuguese Tag = Tag(compact.BrazilianPortuguese)
EuropeanPortuguese Tag = Tag(compact.EuropeanPortuguese)
Romanian Tag = Tag(compact.Romanian)
Russian Tag = Tag(compact.Russian)
Sinhala Tag = Tag(compact.Sinhala)
Slovak Tag = Tag(compact.Slovak)
Slovenian Tag = Tag(compact.Slovenian)
Albanian Tag = Tag(compact.Albanian)
Serbian Tag = Tag(compact.Serbian)
SerbianLatin Tag = Tag(compact.SerbianLatin)
Swedish Tag = Tag(compact.Swedish)
Swahili Tag = Tag(compact.Swahili)
Tamil Tag = Tag(compact.Tamil)
Telugu Tag = Tag(compact.Telugu)
Thai Tag = Tag(compact.Thai)
Turkish Tag = Tag(compact.Turkish)
Ukrainian Tag = Tag(compact.Ukrainian)
Urdu Tag = Tag(compact.Urdu)
Uzbek Tag = Tag(compact.Uzbek)
Vietnamese Tag = Tag(compact.Vietnamese)
Chinese Tag = Tag(compact.Chinese)
SimplifiedChinese Tag = Tag(compact.SimplifiedChinese)
TraditionalChinese Tag = Tag(compact.TraditionalChinese)
Zulu Tag = Tag(compact.Zulu)
)

27
vendor/golang.org/x/text/runes/LICENSE generated vendored
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@ -1,27 +0,0 @@
Copyright (c) 2009 The Go Authors. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above
copyright notice, this list of conditions and the following disclaimer
in the documentation and/or other materials provided with the
distribution.
* Neither the name of Google Inc. nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

187
vendor/golang.org/x/text/runes/cond.go generated vendored
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@ -1,187 +0,0 @@
// Copyright 2015 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package runes
import (
"unicode/utf8"
"golang.org/x/text/transform"
)
// Note: below we pass invalid UTF-8 to the tIn and tNotIn transformers as is.
// This is done for various reasons:
// - To retain the semantics of the Nop transformer: if input is passed to a Nop
// one would expect it to be unchanged.
// - It would be very expensive to pass a converted RuneError to a transformer:
// a transformer might need more source bytes after RuneError, meaning that
// the only way to pass it safely is to create a new buffer and manage the
// intermingling of RuneErrors and normal input.
// - Many transformers leave ill-formed UTF-8 as is, so this is not
// inconsistent. Generally ill-formed UTF-8 is only replaced if it is a
// logical consequence of the operation (as for Map) or if it otherwise would
// pose security concerns (as for Remove).
// - An alternative would be to return an error on ill-formed UTF-8, but this
// would be inconsistent with other operations.
// If returns a transformer that applies tIn to consecutive runes for which
// s.Contains(r) and tNotIn to consecutive runes for which !s.Contains(r). Reset
// is called on tIn and tNotIn at the start of each run. A Nop transformer will
// substitute a nil value passed to tIn or tNotIn. Invalid UTF-8 is translated
// to RuneError to determine which transformer to apply, but is passed as is to
// the respective transformer.
func If(s Set, tIn, tNotIn transform.Transformer) Transformer {
if tIn == nil && tNotIn == nil {
return Transformer{transform.Nop}
}
if tIn == nil {
tIn = transform.Nop
}
if tNotIn == nil {
tNotIn = transform.Nop
}
sIn, ok := tIn.(transform.SpanningTransformer)
if !ok {
sIn = dummySpan{tIn}
}
sNotIn, ok := tNotIn.(transform.SpanningTransformer)
if !ok {
sNotIn = dummySpan{tNotIn}
}
a := &cond{
tIn: sIn,
tNotIn: sNotIn,
f: s.Contains,
}
a.Reset()
return Transformer{a}
}
type dummySpan struct{ transform.Transformer }
func (d dummySpan) Span(src []byte, atEOF bool) (n int, err error) {
return 0, transform.ErrEndOfSpan
}
type cond struct {
tIn, tNotIn transform.SpanningTransformer
f func(rune) bool
check func(rune) bool // current check to perform
t transform.SpanningTransformer // current transformer to use
}
// Reset implements transform.Transformer.
func (t *cond) Reset() {
t.check = t.is
t.t = t.tIn
t.t.Reset() // notIn will be reset on first usage.
}
func (t *cond) is(r rune) bool {
if t.f(r) {
return true
}
t.check = t.isNot
t.t = t.tNotIn
t.tNotIn.Reset()
return false
}
func (t *cond) isNot(r rune) bool {
if !t.f(r) {
return true
}
t.check = t.is
t.t = t.tIn
t.tIn.Reset()
return false
}
// This implementation of Span doesn't help all too much, but it needs to be
// there to satisfy this package's Transformer interface.
// TODO: there are certainly room for improvements, though. For example, if
// t.t == transform.Nop (which will a common occurrence) it will save a bundle
// to special-case that loop.
func (t *cond) Span(src []byte, atEOF bool) (n int, err error) {
p := 0
for n < len(src) && err == nil {
// Don't process too much at a time as the Spanner that will be
// called on this block may terminate early.
const maxChunk = 4096
max := len(src)
if v := n + maxChunk; v < max {
max = v
}
atEnd := false
size := 0
current := t.t
for ; p < max; p += size {
r := rune(src[p])
if r < utf8.RuneSelf {
size = 1
} else if r, size = utf8.DecodeRune(src[p:]); size == 1 {
if !atEOF && !utf8.FullRune(src[p:]) {
err = transform.ErrShortSrc
break
}
}
if !t.check(r) {
// The next rune will be the start of a new run.
atEnd = true
break
}
}
n2, err2 := current.Span(src[n:p], atEnd || (atEOF && p == len(src)))
n += n2
if err2 != nil {
return n, err2
}
// At this point either err != nil or t.check will pass for the rune at p.
p = n + size
}
return n, err
}
func (t *cond) Transform(dst, src []byte, atEOF bool) (nDst, nSrc int, err error) {
p := 0
for nSrc < len(src) && err == nil {
// Don't process too much at a time, as the work might be wasted if the
// destination buffer isn't large enough to hold the result or a
// transform returns an error early.
const maxChunk = 4096
max := len(src)
if n := nSrc + maxChunk; n < len(src) {
max = n
}
atEnd := false
size := 0
current := t.t
for ; p < max; p += size {
r := rune(src[p])
if r < utf8.RuneSelf {
size = 1
} else if r, size = utf8.DecodeRune(src[p:]); size == 1 {
if !atEOF && !utf8.FullRune(src[p:]) {
err = transform.ErrShortSrc
break
}
}
if !t.check(r) {
// The next rune will be the start of a new run.
atEnd = true
break
}
}
nDst2, nSrc2, err2 := current.Transform(dst[nDst:], src[nSrc:p], atEnd || (atEOF && p == len(src)))
nDst += nDst2
nSrc += nSrc2
if err2 != nil {
return nDst, nSrc, err2
}
// At this point either err != nil or t.check will pass for the rune at p.
p = nSrc + size
}
return nDst, nSrc, err
}

355
vendor/golang.org/x/text/runes/runes.go generated vendored
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@ -1,355 +0,0 @@
// Copyright 2014 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Package runes provide transforms for UTF-8 encoded text.
package runes // import "golang.org/x/text/runes"
import (
"unicode"
"unicode/utf8"
"golang.org/x/text/transform"
)
// A Set is a collection of runes.
type Set interface {
// Contains returns true if r is contained in the set.
Contains(r rune) bool
}
type setFunc func(rune) bool
func (s setFunc) Contains(r rune) bool {
return s(r)
}
// Note: using funcs here instead of wrapping types result in cleaner
// documentation and a smaller API.
// In creates a Set with a Contains method that returns true for all runes in
// the given RangeTable.
func In(rt *unicode.RangeTable) Set {
return setFunc(func(r rune) bool { return unicode.Is(rt, r) })
}
// In creates a Set with a Contains method that returns true for all runes not
// in the given RangeTable.
func NotIn(rt *unicode.RangeTable) Set {
return setFunc(func(r rune) bool { return !unicode.Is(rt, r) })
}
// Predicate creates a Set with a Contains method that returns f(r).
func Predicate(f func(rune) bool) Set {
return setFunc(f)
}
// Transformer implements the transform.Transformer interface.
type Transformer struct {
t transform.SpanningTransformer
}
func (t Transformer) Transform(dst, src []byte, atEOF bool) (nDst, nSrc int, err error) {
return t.t.Transform(dst, src, atEOF)
}
func (t Transformer) Span(b []byte, atEOF bool) (n int, err error) {
return t.t.Span(b, atEOF)
}
func (t Transformer) Reset() { t.t.Reset() }
// Bytes returns a new byte slice with the result of converting b using t. It
// calls Reset on t. It returns nil if any error was found. This can only happen
// if an error-producing Transformer is passed to If.
func (t Transformer) Bytes(b []byte) []byte {
b, _, err := transform.Bytes(t, b)
if err != nil {
return nil
}
return b
}
// String returns a string with the result of converting s using t. It calls
// Reset on t. It returns the empty string if any error was found. This can only
// happen if an error-producing Transformer is passed to If.
func (t Transformer) String(s string) string {
s, _, err := transform.String(t, s)
if err != nil {
return ""
}
return s
}
// TODO:
// - Copy: copying strings and bytes in whole-rune units.
// - Validation (maybe)
// - Well-formed-ness (maybe)
const runeErrorString = string(utf8.RuneError)
// Remove returns a Transformer that removes runes r for which s.Contains(r).
// Illegal input bytes are replaced by RuneError before being passed to f.
func Remove(s Set) Transformer {
if f, ok := s.(setFunc); ok {
// This little trick cuts the running time of BenchmarkRemove for sets
// created by Predicate roughly in half.
// TODO: special-case RangeTables as well.
return Transformer{remove(f)}
}
return Transformer{remove(s.Contains)}
}
// TODO: remove transform.RemoveFunc.
type remove func(r rune) bool
func (remove) Reset() {}
// Span implements transform.Spanner.
func (t remove) Span(src []byte, atEOF bool) (n int, err error) {
for r, size := rune(0), 0; n < len(src); {
if r = rune(src[n]); r < utf8.RuneSelf {
size = 1
} else if r, size = utf8.DecodeRune(src[n:]); size == 1 {
// Invalid rune.
if !atEOF && !utf8.FullRune(src[n:]) {
err = transform.ErrShortSrc
} else {
err = transform.ErrEndOfSpan
}
break
}
if t(r) {
err = transform.ErrEndOfSpan
break
}
n += size
}
return
}
// Transform implements transform.Transformer.
func (t remove) Transform(dst, src []byte, atEOF bool) (nDst, nSrc int, err error) {
for r, size := rune(0), 0; nSrc < len(src); {
if r = rune(src[nSrc]); r < utf8.RuneSelf {
size = 1
} else if r, size = utf8.DecodeRune(src[nSrc:]); size == 1 {
// Invalid rune.
if !atEOF && !utf8.FullRune(src[nSrc:]) {
err = transform.ErrShortSrc
break
}
// We replace illegal bytes with RuneError. Not doing so might
// otherwise turn a sequence of invalid UTF-8 into valid UTF-8.
// The resulting byte sequence may subsequently contain runes
// for which t(r) is true that were passed unnoticed.
if !t(utf8.RuneError) {
if nDst+3 > len(dst) {
err = transform.ErrShortDst
break
}
dst[nDst+0] = runeErrorString[0]
dst[nDst+1] = runeErrorString[1]
dst[nDst+2] = runeErrorString[2]
nDst += 3
}
nSrc++
continue
}
if t(r) {
nSrc += size
continue
}
if nDst+size > len(dst) {
err = transform.ErrShortDst
break
}
for i := 0; i < size; i++ {
dst[nDst] = src[nSrc]
nDst++
nSrc++
}
}
return
}
// Map returns a Transformer that maps the runes in the input using the given
// mapping. Illegal bytes in the input are converted to utf8.RuneError before
// being passed to the mapping func.
func Map(mapping func(rune) rune) Transformer {
return Transformer{mapper(mapping)}
}
type mapper func(rune) rune
func (mapper) Reset() {}
// Span implements transform.Spanner.
func (t mapper) Span(src []byte, atEOF bool) (n int, err error) {
for r, size := rune(0), 0; n < len(src); n += size {
if r = rune(src[n]); r < utf8.RuneSelf {
size = 1
} else if r, size = utf8.DecodeRune(src[n:]); size == 1 {
// Invalid rune.
if !atEOF && !utf8.FullRune(src[n:]) {
err = transform.ErrShortSrc
} else {
err = transform.ErrEndOfSpan
}
break
}
if t(r) != r {
err = transform.ErrEndOfSpan
break
}
}
return n, err
}
// Transform implements transform.Transformer.
func (t mapper) Transform(dst, src []byte, atEOF bool) (nDst, nSrc int, err error) {
var replacement rune
var b [utf8.UTFMax]byte
for r, size := rune(0), 0; nSrc < len(src); {
if r = rune(src[nSrc]); r < utf8.RuneSelf {
if replacement = t(r); replacement < utf8.RuneSelf {
if nDst == len(dst) {
err = transform.ErrShortDst
break
}
dst[nDst] = byte(replacement)
nDst++
nSrc++
continue
}
size = 1
} else if r, size = utf8.DecodeRune(src[nSrc:]); size == 1 {
// Invalid rune.
if !atEOF && !utf8.FullRune(src[nSrc:]) {
err = transform.ErrShortSrc
break
}
if replacement = t(utf8.RuneError); replacement == utf8.RuneError {
if nDst+3 > len(dst) {
err = transform.ErrShortDst
break
}
dst[nDst+0] = runeErrorString[0]
dst[nDst+1] = runeErrorString[1]
dst[nDst+2] = runeErrorString[2]
nDst += 3
nSrc++
continue
}
} else if replacement = t(r); replacement == r {
if nDst+size > len(dst) {
err = transform.ErrShortDst
break
}
for i := 0; i < size; i++ {
dst[nDst] = src[nSrc]
nDst++
nSrc++
}
continue
}
n := utf8.EncodeRune(b[:], replacement)
if nDst+n > len(dst) {
err = transform.ErrShortDst
break
}
for i := 0; i < n; i++ {
dst[nDst] = b[i]
nDst++
}
nSrc += size
}
return
}
// ReplaceIllFormed returns a transformer that replaces all input bytes that are
// not part of a well-formed UTF-8 code sequence with utf8.RuneError.
func ReplaceIllFormed() Transformer {
return Transformer{&replaceIllFormed{}}
}
type replaceIllFormed struct{ transform.NopResetter }
func (t replaceIllFormed) Span(src []byte, atEOF bool) (n int, err error) {
for n < len(src) {
// ASCII fast path.
if src[n] < utf8.RuneSelf {
n++
continue
}
r, size := utf8.DecodeRune(src[n:])
// Look for a valid non-ASCII rune.
if r != utf8.RuneError || size != 1 {
n += size
continue
}
// Look for short source data.
if !atEOF && !utf8.FullRune(src[n:]) {
err = transform.ErrShortSrc
break
}
// We have an invalid rune.
err = transform.ErrEndOfSpan
break
}
return n, err
}
func (t replaceIllFormed) Transform(dst, src []byte, atEOF bool) (nDst, nSrc int, err error) {
for nSrc < len(src) {
// ASCII fast path.
if r := src[nSrc]; r < utf8.RuneSelf {
if nDst == len(dst) {
err = transform.ErrShortDst
break
}
dst[nDst] = r
nDst++
nSrc++
continue
}
// Look for a valid non-ASCII rune.
if _, size := utf8.DecodeRune(src[nSrc:]); size != 1 {
if size != copy(dst[nDst:], src[nSrc:nSrc+size]) {
err = transform.ErrShortDst
break
}
nDst += size
nSrc += size
continue
}
// Look for short source data.
if !atEOF && !utf8.FullRune(src[nSrc:]) {
err = transform.ErrShortSrc
break
}
// We have an invalid rune.
if nDst+3 > len(dst) {
err = transform.ErrShortDst
break
}
dst[nDst+0] = runeErrorString[0]
dst[nDst+1] = runeErrorString[1]
dst[nDst+2] = runeErrorString[2]
nDst += 3
nSrc++
}
return nDst, nSrc, err
}

27
vendor/golang.org/x/text/transform/LICENSE generated vendored
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@ -1,27 +0,0 @@
Copyright (c) 2009 The Go Authors. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above
copyright notice, this list of conditions and the following disclaimer
in the documentation and/or other materials provided with the
distribution.
* Neither the name of Google Inc. nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

27
vendor/golang.org/x/text/unicode/cldr/LICENSE generated vendored
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@ -1,27 +0,0 @@
Copyright (c) 2009 The Go Authors. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above
copyright notice, this list of conditions and the following disclaimer
in the documentation and/or other materials provided with the
distribution.
* Neither the name of Google Inc. nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

105
vendor/golang.org/x/text/unicode/cldr/base.go generated vendored
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@ -1,105 +0,0 @@
// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package cldr
import (
"encoding/xml"
"regexp"
"strconv"
)
// Elem is implemented by every XML element.
type Elem interface {
setEnclosing(Elem)
setName(string)
enclosing() Elem
GetCommon() *Common
}
type hidden struct {
CharData string `xml:",chardata"`
Alias *struct {
Common
Source string `xml:"source,attr"`
Path string `xml:"path,attr"`
} `xml:"alias"`
Def *struct {
Common
Choice string `xml:"choice,attr,omitempty"`
Type string `xml:"type,attr,omitempty"`
} `xml:"default"`
}
// Common holds several of the most common attributes and sub elements
// of an XML element.
type Common struct {
XMLName xml.Name
name string
enclElem Elem
Type string `xml:"type,attr,omitempty"`
Reference string `xml:"reference,attr,omitempty"`
Alt string `xml:"alt,attr,omitempty"`
ValidSubLocales string `xml:"validSubLocales,attr,omitempty"`
Draft string `xml:"draft,attr,omitempty"`
hidden
}
// Default returns the default type to select from the enclosed list
// or "" if no default value is specified.
func (e *Common) Default() string {
if e.Def == nil {
return ""
}
if e.Def.Choice != "" {
return e.Def.Choice
} else if e.Def.Type != "" {
// Type is still used by the default element in collation.
return e.Def.Type
}
return ""
}
// Element returns the XML element name.
func (e *Common) Element() string {
return e.name
}
// GetCommon returns e. It is provided such that Common implements Elem.
func (e *Common) GetCommon() *Common {
return e
}
// Data returns the character data accumulated for this element.
func (e *Common) Data() string {
e.CharData = charRe.ReplaceAllStringFunc(e.CharData, replaceUnicode)
return e.CharData
}
func (e *Common) setName(s string) {
e.name = s
}
func (e *Common) enclosing() Elem {
return e.enclElem
}
func (e *Common) setEnclosing(en Elem) {
e.enclElem = en
}
// Escape characters that can be escaped without further escaping the string.
var charRe = regexp.MustCompile(`&#x[0-9a-fA-F]*;|\\u[0-9a-fA-F]{4}|\\U[0-9a-fA-F]{8}|\\x[0-9a-fA-F]{2}|\\[0-7]{3}|\\[abtnvfr]`)
// replaceUnicode converts hexadecimal Unicode codepoint notations to a one-rune string.
// It assumes the input string is correctly formatted.
func replaceUnicode(s string) string {
if s[1] == '#' {
r, _ := strconv.ParseInt(s[3:len(s)-1], 16, 32)
return string(r)
}
r, _, _, _ := strconv.UnquoteChar(s, 0)
return string(r)
}

130
vendor/golang.org/x/text/unicode/cldr/cldr.go generated vendored
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@ -1,130 +0,0 @@
// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
//go:generate go run makexml.go -output xml.go
// Package cldr provides a parser for LDML and related XML formats.
// This package is intended to be used by the table generation tools
// for the various internationalization-related packages.
// As the XML types are generated from the CLDR DTD, and as the CLDR standard
// is periodically amended, this package may change considerably over time.
// This mostly means that data may appear and disappear between versions.
// That is, old code should keep compiling for newer versions, but data
// may have moved or changed.
// CLDR version 22 is the first version supported by this package.
// Older versions may not work.
package cldr // import "golang.org/x/text/unicode/cldr"
import (
"fmt"
"sort"
)
// CLDR provides access to parsed data of the Unicode Common Locale Data Repository.
type CLDR struct {
parent map[string][]string
locale map[string]*LDML
resolved map[string]*LDML
bcp47 *LDMLBCP47
supp *SupplementalData
}
func makeCLDR() *CLDR {
return &CLDR{
parent: make(map[string][]string),
locale: make(map[string]*LDML),
resolved: make(map[string]*LDML),
bcp47: &LDMLBCP47{},
supp: &SupplementalData{},
}
}
// BCP47 returns the parsed BCP47 LDML data. If no such data was parsed, nil is returned.
func (cldr *CLDR) BCP47() *LDMLBCP47 {
return nil
}
// Draft indicates the draft level of an element.
type Draft int
const (
Approved Draft = iota
Contributed
Provisional
Unconfirmed
)
var drafts = []string{"unconfirmed", "provisional", "contributed", "approved", ""}
// ParseDraft returns the Draft value corresponding to the given string. The
// empty string corresponds to Approved.
func ParseDraft(level string) (Draft, error) {
if level == "" {
return Approved, nil
}
for i, s := range drafts {
if level == s {
return Unconfirmed - Draft(i), nil
}
}
return Approved, fmt.Errorf("cldr: unknown draft level %q", level)
}
func (d Draft) String() string {
return drafts[len(drafts)-1-int(d)]
}
// SetDraftLevel sets which draft levels to include in the evaluated LDML.
// Any draft element for which the draft level is higher than lev will be excluded.
// If multiple draft levels are available for a single element, the one with the
// lowest draft level will be selected, unless preferDraft is true, in which case
// the highest draft will be chosen.
// It is assumed that the underlying LDML is canonicalized.
func (cldr *CLDR) SetDraftLevel(lev Draft, preferDraft bool) {
// TODO: implement
cldr.resolved = make(map[string]*LDML)
}
// RawLDML returns the LDML XML for id in unresolved form.
// id must be one of the strings returned by Locales.
func (cldr *CLDR) RawLDML(loc string) *LDML {
return cldr.locale[loc]
}
// LDML returns the fully resolved LDML XML for loc, which must be one of
// the strings returned by Locales.
func (cldr *CLDR) LDML(loc string) (*LDML, error) {
return cldr.resolve(loc)
}
// Supplemental returns the parsed supplemental data. If no such data was parsed,
// nil is returned.
func (cldr *CLDR) Supplemental() *SupplementalData {
return cldr.supp
}
// Locales returns the locales for which there exist files.
// Valid sublocales for which there is no file are not included.
// The root locale is always sorted first.
func (cldr *CLDR) Locales() []string {
loc := []string{"root"}
hasRoot := false
for l, _ := range cldr.locale {
if l == "root" {
hasRoot = true
continue
}
loc = append(loc, l)
}
sort.Strings(loc[1:])
if !hasRoot {
return loc[1:]
}
return loc
}
// Get fills in the fields of x based on the XPath path.
func Get(e Elem, path string) (res Elem, err error) {
return walkXPath(e, path)
}

359
vendor/golang.org/x/text/unicode/cldr/collate.go generated vendored
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@ -1,359 +0,0 @@
// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package cldr
import (
"bufio"
"encoding/xml"
"errors"
"fmt"
"strconv"
"strings"
"unicode"
"unicode/utf8"
)
// RuleProcessor can be passed to Collator's Process method, which
// parses the rules and calls the respective method for each rule found.
type RuleProcessor interface {
Reset(anchor string, before int) error
Insert(level int, str, context, extend string) error
Index(id string)
}
const (
// cldrIndex is a Unicode-reserved sentinel value used to mark the start
// of a grouping within an index.
// We ignore any rule that starts with this rune.
// See http://unicode.org/reports/tr35/#Collation_Elements for details.
cldrIndex = "\uFDD0"
// specialAnchor is the format in which to represent logical reset positions,
// such as "first tertiary ignorable".
specialAnchor = "<%s/>"
)
// Process parses the rules for the tailorings of this collation
// and calls the respective methods of p for each rule found.
func (c Collation) Process(p RuleProcessor) (err error) {
if len(c.Cr) > 0 {
if len(c.Cr) > 1 {
return fmt.Errorf("multiple cr elements, want 0 or 1")
}
return processRules(p, c.Cr[0].Data())
}
if c.Rules.Any != nil {
return c.processXML(p)
}
return errors.New("no tailoring data")
}
// processRules parses rules in the Collation Rule Syntax defined in
// http://www.unicode.org/reports/tr35/tr35-collation.html#Collation_Tailorings.
func processRules(p RuleProcessor, s string) (err error) {
chk := func(s string, e error) string {
if err == nil {
err = e
}
return s
}
i := 0 // Save the line number for use after the loop.
scanner := bufio.NewScanner(strings.NewReader(s))
for ; scanner.Scan() && err == nil; i++ {
for s := skipSpace(scanner.Text()); s != "" && s[0] != '#'; s = skipSpace(s) {
level := 5
var ch byte
switch ch, s = s[0], s[1:]; ch {
case '&': // followed by <anchor> or '[' <key> ']'
if s = skipSpace(s); consume(&s, '[') {
s = chk(parseSpecialAnchor(p, s))
} else {
s = chk(parseAnchor(p, 0, s))
}
case '<': // sort relation '<'{1,4}, optionally followed by '*'.
for level = 1; consume(&s, '<'); level++ {
}
if level > 4 {
err = fmt.Errorf("level %d > 4", level)
}
fallthrough
case '=': // identity relation, optionally followed by *.
if consume(&s, '*') {
s = chk(parseSequence(p, level, s))
} else {
s = chk(parseOrder(p, level, s))
}
default:
chk("", fmt.Errorf("illegal operator %q", ch))
break
}
}
}
if chk("", scanner.Err()); err != nil {
return fmt.Errorf("%d: %v", i, err)
}
return nil
}
// parseSpecialAnchor parses the anchor syntax which is either of the form
// ['before' <level>] <anchor>
// or
// [<label>]
// The starting should already be consumed.
func parseSpecialAnchor(p RuleProcessor, s string) (tail string, err error) {
i := strings.IndexByte(s, ']')
if i == -1 {
return "", errors.New("unmatched bracket")
}
a := strings.TrimSpace(s[:i])
s = s[i+1:]
if strings.HasPrefix(a, "before ") {
l, err := strconv.ParseUint(skipSpace(a[len("before "):]), 10, 3)
if err != nil {
return s, err
}
return parseAnchor(p, int(l), s)
}
return s, p.Reset(fmt.Sprintf(specialAnchor, a), 0)
}
func parseAnchor(p RuleProcessor, level int, s string) (tail string, err error) {
anchor, s, err := scanString(s)
if err != nil {
return s, err
}
return s, p.Reset(anchor, level)
}
func parseOrder(p RuleProcessor, level int, s string) (tail string, err error) {
var value, context, extend string
if value, s, err = scanString(s); err != nil {
return s, err
}
if strings.HasPrefix(value, cldrIndex) {
p.Index(value[len(cldrIndex):])
return
}
if consume(&s, '|') {
if context, s, err = scanString(s); err != nil {
return s, errors.New("missing string after context")
}
}
if consume(&s, '/') {
if extend, s, err = scanString(s); err != nil {
return s, errors.New("missing string after extension")
}
}
return s, p.Insert(level, value, context, extend)
}
// scanString scans a single input string.
func scanString(s string) (str, tail string, err error) {
if s = skipSpace(s); s == "" {
return s, s, errors.New("missing string")
}
buf := [16]byte{} // small but enough to hold most cases.
value := buf[:0]
for s != "" {
if consume(&s, '\'') {
i := strings.IndexByte(s, '\'')
if i == -1 {
return "", "", errors.New(`unmatched single quote`)
}
if i == 0 {
value = append(value, '\'')
} else {
value = append(value, s[:i]...)
}
s = s[i+1:]
continue
}
r, sz := utf8.DecodeRuneInString(s)
if unicode.IsSpace(r) || strings.ContainsRune("&<=#", r) {
break
}
value = append(value, s[:sz]...)
s = s[sz:]
}
return string(value), skipSpace(s), nil
}
func parseSequence(p RuleProcessor, level int, s string) (tail string, err error) {
if s = skipSpace(s); s == "" {
return s, errors.New("empty sequence")
}
last := rune(0)
for s != "" {
r, sz := utf8.DecodeRuneInString(s)
s = s[sz:]
if r == '-' {
// We have a range. The first element was already written.
if last == 0 {
return s, errors.New("range without starter value")
}
r, sz = utf8.DecodeRuneInString(s)
s = s[sz:]
if r == utf8.RuneError || r < last {
return s, fmt.Errorf("invalid range %q-%q", last, r)
}
for i := last + 1; i <= r; i++ {
if err := p.Insert(level, string(i), "", ""); err != nil {
return s, err
}
}
last = 0
continue
}
if unicode.IsSpace(r) || unicode.IsPunct(r) {
break
}
// normal case
if err := p.Insert(level, string(r), "", ""); err != nil {
return s, err
}
last = r
}
return s, nil
}
func skipSpace(s string) string {
return strings.TrimLeftFunc(s, unicode.IsSpace)
}
// consumes returns whether the next byte is ch. If so, it gobbles it by
// updating s.
func consume(s *string, ch byte) (ok bool) {
if *s == "" || (*s)[0] != ch {
return false
}
*s = (*s)[1:]
return true
}
// The following code parses Collation rules of CLDR version 24 and before.
var lmap = map[byte]int{
'p': 1,
's': 2,
't': 3,
'i': 5,
}
type rulesElem struct {
Rules struct {
Common
Any []*struct {
XMLName xml.Name
rule
} `xml:",any"`
} `xml:"rules"`
}
type rule struct {
Value string `xml:",chardata"`
Before string `xml:"before,attr"`
Any []*struct {
XMLName xml.Name
rule
} `xml:",any"`
}
var emptyValueError = errors.New("cldr: empty rule value")
func (r *rule) value() (string, error) {
// Convert hexadecimal Unicode codepoint notation to a string.
s := charRe.ReplaceAllStringFunc(r.Value, replaceUnicode)
r.Value = s
if s == "" {
if len(r.Any) != 1 {
return "", emptyValueError
}
r.Value = fmt.Sprintf(specialAnchor, r.Any[0].XMLName.Local)
r.Any = nil
} else if len(r.Any) != 0 {
return "", fmt.Errorf("cldr: XML elements found in collation rule: %v", r.Any)
}
return r.Value, nil
}
func (r rule) process(p RuleProcessor, name, context, extend string) error {
v, err := r.value()
if err != nil {
return err
}
switch name {
case "p", "s", "t", "i":
if strings.HasPrefix(v, cldrIndex) {
p.Index(v[len(cldrIndex):])
return nil
}
if err := p.Insert(lmap[name[0]], v, context, extend); err != nil {
return err
}
case "pc", "sc", "tc", "ic":
level := lmap[name[0]]
for _, s := range v {
if err := p.Insert(level, string(s), context, extend); err != nil {
return err
}
}
default:
return fmt.Errorf("cldr: unsupported tag: %q", name)
}
return nil
}
// processXML parses the format of CLDR versions 24 and older.
func (c Collation) processXML(p RuleProcessor) (err error) {
// Collation is generated and defined in xml.go.
var v string
for _, r := range c.Rules.Any {
switch r.XMLName.Local {
case "reset":
level := 0
switch r.Before {
case "primary", "1":
level = 1
case "secondary", "2":
level = 2
case "tertiary", "3":
level = 3
case "":
default:
return fmt.Errorf("cldr: unknown level %q", r.Before)
}
v, err = r.value()
if err == nil {
err = p.Reset(v, level)
}
case "x":
var context, extend string
for _, r1 := range r.Any {
v, err = r1.value()
switch r1.XMLName.Local {
case "context":
context = v
case "extend":
extend = v
}
}
for _, r1 := range r.Any {
if t := r1.XMLName.Local; t == "context" || t == "extend" {
continue
}
r1.rule.process(p, r1.XMLName.Local, context, extend)
}
default:
err = r.rule.process(p, r.XMLName.Local, "", "")
}
if err != nil {
return err
}
}
return nil
}

171
vendor/golang.org/x/text/unicode/cldr/decode.go generated vendored
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@ -1,171 +0,0 @@
// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package cldr
import (
"archive/zip"
"bytes"
"encoding/xml"
"fmt"
"io"
"io/ioutil"
"log"
"os"
"path/filepath"
"regexp"
)
// A Decoder loads an archive of CLDR data.
type Decoder struct {
dirFilter []string
sectionFilter []string
loader Loader
cldr *CLDR
curLocale string
}
// SetSectionFilter takes a list top-level LDML element names to which
// evaluation of LDML should be limited. It automatically calls SetDirFilter.
func (d *Decoder) SetSectionFilter(filter ...string) {
d.sectionFilter = filter
// TODO: automatically set dir filter
}
// SetDirFilter limits the loading of LDML XML files of the specied directories.
// Note that sections may be split across directories differently for different CLDR versions.
// For more robust code, use SetSectionFilter.
func (d *Decoder) SetDirFilter(dir ...string) {
d.dirFilter = dir
}
// A Loader provides access to the files of a CLDR archive.
type Loader interface {
Len() int
Path(i int) string
Reader(i int) (io.ReadCloser, error)
}
var fileRe = regexp.MustCompile(`.*[/\\](.*)[/\\](.*)\.xml`)
// Decode loads and decodes the files represented by l.
func (d *Decoder) Decode(l Loader) (cldr *CLDR, err error) {
d.cldr = makeCLDR()
for i := 0; i < l.Len(); i++ {
fname := l.Path(i)
if m := fileRe.FindStringSubmatch(fname); m != nil {
if len(d.dirFilter) > 0 && !in(d.dirFilter, m[1]) {
continue
}
var r io.Reader
if r, err = l.Reader(i); err == nil {
err = d.decode(m[1], m[2], r)
}
if err != nil {
return nil, err
}
}
}
d.cldr.finalize(d.sectionFilter)
return d.cldr, nil
}
func (d *Decoder) decode(dir, id string, r io.Reader) error {
var v interface{}
var l *LDML
cldr := d.cldr
switch {
case dir == "supplemental":
v = cldr.supp
case dir == "transforms":
return nil
case dir == "bcp47":
v = cldr.bcp47
case dir == "validity":
return nil
default:
ok := false
if v, ok = cldr.locale[id]; !ok {
l = &LDML{}
v, cldr.locale[id] = l, l
}
}
x := xml.NewDecoder(r)
if err := x.Decode(v); err != nil {
log.Printf("%s/%s: %v", dir, id, err)
return err
}
if l != nil {
if l.Identity == nil {
return fmt.Errorf("%s/%s: missing identity element", dir, id)
}
// TODO: verify when CLDR bug http://unicode.org/cldr/trac/ticket/8970
// is resolved.
// path := strings.Split(id, "_")
// if lang := l.Identity.Language.Type; lang != path[0] {
// return fmt.Errorf("%s/%s: language was %s; want %s", dir, id, lang, path[0])
// }
}
return nil
}
type pathLoader []string
func makePathLoader(path string) (pl pathLoader, err error) {
err = filepath.Walk(path, func(path string, _ os.FileInfo, err error) error {
pl = append(pl, path)
return err
})
return pl, err
}
func (pl pathLoader) Len() int {
return len(pl)
}
func (pl pathLoader) Path(i int) string {
return pl[i]
}
func (pl pathLoader) Reader(i int) (io.ReadCloser, error) {
return os.Open(pl[i])
}
// DecodePath loads CLDR data from the given path.
func (d *Decoder) DecodePath(path string) (cldr *CLDR, err error) {
loader, err := makePathLoader(path)
if err != nil {
return nil, err
}
return d.Decode(loader)
}
type zipLoader struct {
r *zip.Reader
}
func (zl zipLoader) Len() int {
return len(zl.r.File)
}
func (zl zipLoader) Path(i int) string {
return zl.r.File[i].Name
}
func (zl zipLoader) Reader(i int) (io.ReadCloser, error) {
return zl.r.File[i].Open()
}
// DecodeZip loads CLDR data from the zip archive for which r is the source.
func (d *Decoder) DecodeZip(r io.Reader) (cldr *CLDR, err error) {
buffer, err := ioutil.ReadAll(r)
if err != nil {
return nil, err
}
archive, err := zip.NewReader(bytes.NewReader(buffer), int64(len(buffer)))
if err != nil {
return nil, err
}
return d.Decode(zipLoader{archive})
}

400
vendor/golang.org/x/text/unicode/cldr/makexml.go generated vendored
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@ -1,400 +0,0 @@
// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build ignore
// This tool generates types for the various XML formats of CLDR.
package main
import (
"archive/zip"
"bytes"
"encoding/xml"
"flag"
"fmt"
"io"
"io/ioutil"
"log"
"os"
"regexp"
"strings"
"golang.org/x/text/internal/gen"
)
var outputFile = flag.String("output", "xml.go", "output file name")
func main() {
flag.Parse()
r := gen.OpenCLDRCoreZip()
buffer, err := ioutil.ReadAll(r)
if err != nil {
log.Fatal("Could not read zip file")
}
r.Close()
z, err := zip.NewReader(bytes.NewReader(buffer), int64(len(buffer)))
if err != nil {
log.Fatalf("Could not read zip archive: %v", err)
}
var buf bytes.Buffer
version := gen.CLDRVersion()
for _, dtd := range files {
for _, f := range z.File {
if strings.HasSuffix(f.Name, dtd.file+".dtd") {
r, err := f.Open()
failOnError(err)
b := makeBuilder(&buf, dtd)
b.parseDTD(r)
b.resolve(b.index[dtd.top[0]])
b.write()
if b.version != "" && version != b.version {
println(f.Name)
log.Fatalf("main: inconsistent versions: found %s; want %s", b.version, version)
}
break
}
}
}
fmt.Fprintln(&buf, "// Version is the version of CLDR from which the XML definitions are generated.")
fmt.Fprintf(&buf, "const Version = %q\n", version)
gen.WriteGoFile(*outputFile, "cldr", buf.Bytes())
}
func failOnError(err error) {
if err != nil {
log.New(os.Stderr, "", log.Lshortfile).Output(2, err.Error())
os.Exit(1)
}
}
// configuration data per DTD type
type dtd struct {
file string // base file name
root string // Go name of the root XML element
top []string // create a different type for this section
skipElem []string // hard-coded or deprecated elements
skipAttr []string // attributes to exclude
predefined []string // hard-coded elements exist of the form <name>Elem
forceRepeat []string // elements to make slices despite DTD
}
var files = []dtd{
{
file: "ldmlBCP47",
root: "LDMLBCP47",
top: []string{"ldmlBCP47"},
skipElem: []string{
"cldrVersion", // deprecated, not used
},
},
{
file: "ldmlSupplemental",
root: "SupplementalData",
top: []string{"supplementalData"},
skipElem: []string{
"cldrVersion", // deprecated, not used
},
forceRepeat: []string{
"plurals", // data defined in plurals.xml and ordinals.xml
},
},
{
file: "ldml",
root: "LDML",
top: []string{
"ldml", "collation", "calendar", "timeZoneNames", "localeDisplayNames", "numbers",
},
skipElem: []string{
"cp", // not used anywhere
"special", // not used anywhere
"fallback", // deprecated, not used
"alias", // in Common
"default", // in Common
},
skipAttr: []string{
"hiraganaQuarternary", // typo in DTD, correct version included as well
},
predefined: []string{"rules"},
},
}
var comments = map[string]string{
"ldmlBCP47": `
// LDMLBCP47 holds information on allowable values for various variables in LDML.
`,
"supplementalData": `
// SupplementalData holds information relevant for internationalization
// and proper use of CLDR, but that is not contained in the locale hierarchy.
`,
"ldml": `
// LDML is the top-level type for locale-specific data.
`,
"collation": `
// Collation contains rules that specify a certain sort-order,
// as a tailoring of the root order.
// The parsed rules are obtained by passing a RuleProcessor to Collation's
// Process method.
`,
"calendar": `
// Calendar specifies the fields used for formatting and parsing dates and times.
// The month and quarter names are identified numerically, starting at 1.
// The day (of the week) names are identified with short strings, since there is
// no universally-accepted numeric designation.
`,
"dates": `
// Dates contains information regarding the format and parsing of dates and times.
`,
"localeDisplayNames": `
// LocaleDisplayNames specifies localized display names for for scripts, languages,
// countries, currencies, and variants.
`,
"numbers": `
// Numbers supplies information for formatting and parsing numbers and currencies.
`,
}
type element struct {
name string // XML element name
category string // elements contained by this element
signature string // category + attrKey*
attr []*attribute // attributes supported by this element.
sub []struct { // parsed and evaluated sub elements of this element.
e *element
repeat bool // true if the element needs to be a slice
}
resolved bool // prevent multiple resolutions of this element.
}
type attribute struct {
name string
key string
list []string
tag string // Go tag
}
var (
reHead = regexp.MustCompile(` *(\w+) +([\w\-]+)`)
reAttr = regexp.MustCompile(` *(\w+) *(?:(\w+)|\(([\w\- \|]+)\)) *(?:#([A-Z]*) *(?:\"([\.\d+])\")?)? *("[\w\-:]*")?`)
reElem = regexp.MustCompile(`^ *(EMPTY|ANY|\(.*\)[\*\+\?]?) *$`)
reToken = regexp.MustCompile(`\w\-`)
)
// builder is used to read in the DTD files from CLDR and generate Go code
// to be used with the encoding/xml package.
type builder struct {
w io.Writer
index map[string]*element
elem []*element
info dtd
version string
}
func makeBuilder(w io.Writer, d dtd) builder {
return builder{
w: w,
index: make(map[string]*element),
elem: []*element{},
info: d,
}
}
// parseDTD parses a DTD file.
func (b *builder) parseDTD(r io.Reader) {
for d := xml.NewDecoder(r); ; {
t, err := d.Token()
if t == nil {
break
}
failOnError(err)
dir, ok := t.(xml.Directive)
if !ok {
continue
}
m := reHead.FindSubmatch(dir)
dir = dir[len(m[0]):]
ename := string(m[2])
el, elementFound := b.index[ename]
switch string(m[1]) {
case "ELEMENT":
if elementFound {
log.Fatal("parseDTD: duplicate entry for element %q", ename)
}
m := reElem.FindSubmatch(dir)
if m == nil {
log.Fatalf("parseDTD: invalid element %q", string(dir))
}
if len(m[0]) != len(dir) {
log.Fatal("parseDTD: invalid element %q", string(dir), len(dir), len(m[0]), string(m[0]))
}
s := string(m[1])
el = &element{
name: ename,
category: s,
}
b.index[ename] = el
case "ATTLIST":
if !elementFound {
log.Fatalf("parseDTD: unknown element %q", ename)
}
s := string(dir)
m := reAttr.FindStringSubmatch(s)
if m == nil {
log.Fatal(fmt.Errorf("parseDTD: invalid attribute %q", string(dir)))
}
if m[4] == "FIXED" {
b.version = m[5]
} else {
switch m[1] {
case "draft", "references", "alt", "validSubLocales", "standard" /* in Common */ :
case "type", "choice":
default:
el.attr = append(el.attr, &attribute{
name: m[1],
key: s,
list: reToken.FindAllString(m[3], -1),
})
el.signature = fmt.Sprintf("%s=%s+%s", el.signature, m[1], m[2])
}
}
}
}
}
var reCat = regexp.MustCompile(`[ ,\|]*(?:(\(|\)|\#?[\w_-]+)([\*\+\?]?))?`)
// resolve takes a parsed element and converts it into structured data
// that can be used to generate the XML code.
func (b *builder) resolve(e *element) {
if e.resolved {
return
}
b.elem = append(b.elem, e)
e.resolved = true
s := e.category
found := make(map[string]bool)
sequenceStart := []int{}
for len(s) > 0 {
m := reCat.FindStringSubmatch(s)
if m == nil {
log.Fatalf("%s: invalid category string %q", e.name, s)
}
repeat := m[2] == "*" || m[2] == "+" || in(b.info.forceRepeat, m[1])
switch m[1] {
case "":
case "(":
sequenceStart = append(sequenceStart, len(e.sub))
case ")":
if len(sequenceStart) == 0 {
log.Fatalf("%s: unmatched closing parenthesis", e.name)
}
for i := sequenceStart[len(sequenceStart)-1]; i < len(e.sub); i++ {
e.sub[i].repeat = e.sub[i].repeat || repeat
}
sequenceStart = sequenceStart[:len(sequenceStart)-1]
default:
if in(b.info.skipElem, m[1]) {
} else if sub, ok := b.index[m[1]]; ok {
if !found[sub.name] {
e.sub = append(e.sub, struct {
e *element
repeat bool
}{sub, repeat})
found[sub.name] = true
b.resolve(sub)
}
} else if m[1] == "#PCDATA" || m[1] == "ANY" {
} else if m[1] != "EMPTY" {
log.Fatalf("resolve:%s: element %q not found", e.name, m[1])
}
}
s = s[len(m[0]):]
}
}
// return true if s is contained in set.
func in(set []string, s string) bool {
for _, v := range set {
if v == s {
return true
}
}
return false
}
var repl = strings.NewReplacer("-", " ", "_", " ")
// title puts the first character or each character following '_' in title case and
// removes all occurrences of '_'.
func title(s string) string {
return strings.Replace(strings.Title(repl.Replace(s)), " ", "", -1)
}
// writeElem generates Go code for a single element, recursively.
func (b *builder) writeElem(tab int, e *element) {
p := func(f string, x ...interface{}) {
f = strings.Replace(f, "\n", "\n"+strings.Repeat("\t", tab), -1)
fmt.Fprintf(b.w, f, x...)
}
if len(e.sub) == 0 && len(e.attr) == 0 {
p("Common")
return
}
p("struct {")
tab++
p("\nCommon")
for _, attr := range e.attr {
if !in(b.info.skipAttr, attr.name) {
p("\n%s string `xml:\"%s,attr\"`", title(attr.name), attr.name)
}
}
for _, sub := range e.sub {
if in(b.info.predefined, sub.e.name) {
p("\n%sElem", sub.e.name)
continue
}
if in(b.info.skipElem, sub.e.name) {
continue
}
p("\n%s ", title(sub.e.name))
if sub.repeat {
p("[]")
}
p("*")
if in(b.info.top, sub.e.name) {
p(title(sub.e.name))
} else {
b.writeElem(tab, sub.e)
}
p(" `xml:\"%s\"`", sub.e.name)
}
tab--
p("\n}")
}
// write generates the Go XML code.
func (b *builder) write() {
for i, name := range b.info.top {
e := b.index[name]
if e != nil {
fmt.Fprintf(b.w, comments[name])
name := title(e.name)
if i == 0 {
name = b.info.root
}
fmt.Fprintf(b.w, "type %s ", name)
b.writeElem(0, e)
fmt.Fprint(b.w, "\n")
}
}
}

602
vendor/golang.org/x/text/unicode/cldr/resolve.go generated vendored
View File

@ -1,602 +0,0 @@
// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package cldr
// This file implements the various inheritance constructs defined by LDML.
// See http://www.unicode.org/reports/tr35/#Inheritance_and_Validity
// for more details.
import (
"fmt"
"log"
"reflect"
"regexp"
"sort"
"strings"
)
// fieldIter iterates over fields in a struct. It includes
// fields of embedded structs.
type fieldIter struct {
v reflect.Value
index, n []int
}
func iter(v reflect.Value) fieldIter {
if v.Kind() != reflect.Struct {
log.Panicf("value %v must be a struct", v)
}
i := fieldIter{
v: v,
index: []int{0},
n: []int{v.NumField()},
}
i.descent()
return i
}
func (i *fieldIter) descent() {
for f := i.field(); f.Anonymous && f.Type.NumField() > 0; f = i.field() {
i.index = append(i.index, 0)
i.n = append(i.n, f.Type.NumField())
}
}
func (i *fieldIter) done() bool {
return len(i.index) == 1 && i.index[0] >= i.n[0]
}
func skip(f reflect.StructField) bool {
return !f.Anonymous && (f.Name[0] < 'A' || f.Name[0] > 'Z')
}
func (i *fieldIter) next() {
for {
k := len(i.index) - 1
i.index[k]++
if i.index[k] < i.n[k] {
if !skip(i.field()) {
break
}
} else {
if k == 0 {
return
}
i.index = i.index[:k]
i.n = i.n[:k]
}
}
i.descent()
}
func (i *fieldIter) value() reflect.Value {
return i.v.FieldByIndex(i.index)
}
func (i *fieldIter) field() reflect.StructField {
return i.v.Type().FieldByIndex(i.index)
}
type visitor func(v reflect.Value) error
var stopDescent = fmt.Errorf("do not recurse")
func (f visitor) visit(x interface{}) error {
return f.visitRec(reflect.ValueOf(x))
}
// visit recursively calls f on all nodes in v.
func (f visitor) visitRec(v reflect.Value) error {
if v.Kind() == reflect.Ptr {
if v.IsNil() {
return nil
}
return f.visitRec(v.Elem())
}
if err := f(v); err != nil {
if err == stopDescent {
return nil
}
return err
}
switch v.Kind() {
case reflect.Struct:
for i := iter(v); !i.done(); i.next() {
if err := f.visitRec(i.value()); err != nil {
return err
}
}
case reflect.Slice:
for i := 0; i < v.Len(); i++ {
if err := f.visitRec(v.Index(i)); err != nil {
return err
}
}
}
return nil
}
// getPath is used for error reporting purposes only.
func getPath(e Elem) string {
if e == nil {
return "<nil>"
}
if e.enclosing() == nil {
return e.GetCommon().name
}
if e.GetCommon().Type == "" {
return fmt.Sprintf("%s.%s", getPath(e.enclosing()), e.GetCommon().name)
}
return fmt.Sprintf("%s.%s[type=%s]", getPath(e.enclosing()), e.GetCommon().name, e.GetCommon().Type)
}
// xmlName returns the xml name of the element or attribute
func xmlName(f reflect.StructField) (name string, attr bool) {
tags := strings.Split(f.Tag.Get("xml"), ",")
for _, s := range tags {
attr = attr || s == "attr"
}
return tags[0], attr
}
func findField(v reflect.Value, key string) (reflect.Value, error) {
v = reflect.Indirect(v)
for i := iter(v); !i.done(); i.next() {
if n, _ := xmlName(i.field()); n == key {
return i.value(), nil
}
}
return reflect.Value{}, fmt.Errorf("cldr: no field %q in element %#v", key, v.Interface())
}
var xpathPart = regexp.MustCompile(`(\pL+)(?:\[@(\pL+)='([\w-]+)'\])?`)
func walkXPath(e Elem, path string) (res Elem, err error) {
for _, c := range strings.Split(path, "/") {
if c == ".." {
if e = e.enclosing(); e == nil {
panic("path ..")
return nil, fmt.Errorf(`cldr: ".." moves past root in path %q`, path)
}
continue
} else if c == "" {
continue
}
m := xpathPart.FindStringSubmatch(c)
if len(m) == 0 || len(m[0]) != len(c) {
return nil, fmt.Errorf("cldr: syntax error in path component %q", c)
}
v, err := findField(reflect.ValueOf(e), m[1])
if err != nil {
return nil, err
}
switch v.Kind() {
case reflect.Slice:
i := 0
if m[2] != "" || v.Len() > 1 {
if m[2] == "" {
m[2] = "type"
if m[3] = e.GetCommon().Default(); m[3] == "" {
return nil, fmt.Errorf("cldr: type selector or default value needed for element %s", m[1])
}
}
for ; i < v.Len(); i++ {
vi := v.Index(i)
key, err := findField(vi.Elem(), m[2])
if err != nil {
return nil, err
}
key = reflect.Indirect(key)
if key.Kind() == reflect.String && key.String() == m[3] {
break
}
}
}
if i == v.Len() || v.Index(i).IsNil() {
return nil, fmt.Errorf("no %s found with %s==%s", m[1], m[2], m[3])
}
e = v.Index(i).Interface().(Elem)
case reflect.Ptr:
if v.IsNil() {
return nil, fmt.Errorf("cldr: element %q not found within element %q", m[1], e.GetCommon().name)
}
var ok bool
if e, ok = v.Interface().(Elem); !ok {
return nil, fmt.Errorf("cldr: %q is not an XML element", m[1])
} else if m[2] != "" || m[3] != "" {
return nil, fmt.Errorf("cldr: no type selector allowed for element %s", m[1])
}
default:
return nil, fmt.Errorf("cldr: %q is not an XML element", m[1])
}
}
return e, nil
}
const absPrefix = "//ldml/"
func (cldr *CLDR) resolveAlias(e Elem, src, path string) (res Elem, err error) {
if src != "locale" {
if !strings.HasPrefix(path, absPrefix) {
return nil, fmt.Errorf("cldr: expected absolute path, found %q", path)
}
path = path[len(absPrefix):]
if e, err = cldr.resolve(src); err != nil {
return nil, err
}
}
return walkXPath(e, path)
}
func (cldr *CLDR) resolveAndMergeAlias(e Elem) error {
alias := e.GetCommon().Alias
if alias == nil {
return nil
}
a, err := cldr.resolveAlias(e, alias.Source, alias.Path)
if err != nil {
return fmt.Errorf("%v: error evaluating path %q: %v", getPath(e), alias.Path, err)
}
// Ensure alias node was already evaluated. TODO: avoid double evaluation.
err = cldr.resolveAndMergeAlias(a)
v := reflect.ValueOf(e).Elem()
for i := iter(reflect.ValueOf(a).Elem()); !i.done(); i.next() {
if vv := i.value(); vv.Kind() != reflect.Ptr || !vv.IsNil() {
if _, attr := xmlName(i.field()); !attr {
v.FieldByIndex(i.index).Set(vv)
}
}
}
return err
}
func (cldr *CLDR) aliasResolver() visitor {
return func(v reflect.Value) (err error) {
if e, ok := v.Addr().Interface().(Elem); ok {
err = cldr.resolveAndMergeAlias(e)
if err == nil && blocking[e.GetCommon().name] {
return stopDescent
}
}
return err
}
}
// elements within blocking elements do not inherit.
// Taken from CLDR's supplementalMetaData.xml.
var blocking = map[string]bool{
"identity": true,
"supplementalData": true,
"cldrTest": true,
"collation": true,
"transform": true,
}
// Distinguishing attributes affect inheritance; two elements with different
// distinguishing attributes are treated as different for purposes of inheritance,
// except when such attributes occur in the indicated elements.
// Taken from CLDR's supplementalMetaData.xml.
var distinguishing = map[string][]string{
"key": nil,
"request_id": nil,
"id": nil,
"registry": nil,
"alt": nil,
"iso4217": nil,
"iso3166": nil,
"mzone": nil,
"from": nil,
"to": nil,
"type": []string{
"abbreviationFallback",
"default",
"mapping",
"measurementSystem",
"preferenceOrdering",
},
"numberSystem": nil,
}
func in(set []string, s string) bool {
for _, v := range set {
if v == s {
return true
}
}
return false
}
// attrKey computes a key based on the distinguishable attributes of
// an element and it's values.
func attrKey(v reflect.Value, exclude ...string) string {
parts := []string{}
ename := v.Interface().(Elem).GetCommon().name
v = v.Elem()
for i := iter(v); !i.done(); i.next() {
if name, attr := xmlName(i.field()); attr {
if except, ok := distinguishing[name]; ok && !in(exclude, name) && !in(except, ename) {
v := i.value()
if v.Kind() == reflect.Ptr {
v = v.Elem()
}
if v.IsValid() {
parts = append(parts, fmt.Sprintf("%s=%s", name, v.String()))
}
}
}
}
sort.Strings(parts)
return strings.Join(parts, ";")
}
// Key returns a key for e derived from all distinguishing attributes
// except those specified by exclude.
func Key(e Elem, exclude ...string) string {
return attrKey(reflect.ValueOf(e), exclude...)
}
// linkEnclosing sets the enclosing element as well as the name
// for all sub-elements of child, recursively.
func linkEnclosing(parent, child Elem) {
child.setEnclosing(parent)
v := reflect.ValueOf(child).Elem()
for i := iter(v); !i.done(); i.next() {
vf := i.value()
if vf.Kind() == reflect.Slice {
for j := 0; j < vf.Len(); j++ {
linkEnclosing(child, vf.Index(j).Interface().(Elem))
}
} else if vf.Kind() == reflect.Ptr && !vf.IsNil() && vf.Elem().Kind() == reflect.Struct {
linkEnclosing(child, vf.Interface().(Elem))
}
}
}
func setNames(e Elem, name string) {
e.setName(name)
v := reflect.ValueOf(e).Elem()
for i := iter(v); !i.done(); i.next() {
vf := i.value()
name, _ = xmlName(i.field())
if vf.Kind() == reflect.Slice {
for j := 0; j < vf.Len(); j++ {
setNames(vf.Index(j).Interface().(Elem), name)
}
} else if vf.Kind() == reflect.Ptr && !vf.IsNil() && vf.Elem().Kind() == reflect.Struct {
setNames(vf.Interface().(Elem), name)
}
}
}
// deepCopy copies elements of v recursively. All elements of v that may
// be modified by inheritance are explicitly copied.
func deepCopy(v reflect.Value) reflect.Value {
switch v.Kind() {
case reflect.Ptr:
if v.IsNil() || v.Elem().Kind() != reflect.Struct {
return v
}
nv := reflect.New(v.Elem().Type())
nv.Elem().Set(v.Elem())
deepCopyRec(nv.Elem(), v.Elem())
return nv
case reflect.Slice:
nv := reflect.MakeSlice(v.Type(), v.Len(), v.Len())
for i := 0; i < v.Len(); i++ {
deepCopyRec(nv.Index(i), v.Index(i))
}
return nv
}
panic("deepCopy: must be called with pointer or slice")
}
// deepCopyRec is only called by deepCopy.
func deepCopyRec(nv, v reflect.Value) {
if v.Kind() == reflect.Struct {
t := v.Type()
for i := 0; i < v.NumField(); i++ {
if name, attr := xmlName(t.Field(i)); name != "" && !attr {
deepCopyRec(nv.Field(i), v.Field(i))
}
}
} else {
nv.Set(deepCopy(v))
}
}
// newNode is used to insert a missing node during inheritance.
func (cldr *CLDR) newNode(v, enc reflect.Value) reflect.Value {
n := reflect.New(v.Type())
for i := iter(v); !i.done(); i.next() {
if name, attr := xmlName(i.field()); name == "" || attr {
n.Elem().FieldByIndex(i.index).Set(i.value())
}
}
n.Interface().(Elem).GetCommon().setEnclosing(enc.Addr().Interface().(Elem))
return n
}
// v, parent must be pointers to struct
func (cldr *CLDR) inheritFields(v, parent reflect.Value) (res reflect.Value, err error) {
t := v.Type()
nv := reflect.New(t)
nv.Elem().Set(v)
for i := iter(v); !i.done(); i.next() {
vf := i.value()
f := i.field()
name, attr := xmlName(f)
if name == "" || attr {
continue
}
pf := parent.FieldByIndex(i.index)
if blocking[name] {
if vf.IsNil() {
vf = pf
}
nv.Elem().FieldByIndex(i.index).Set(deepCopy(vf))
continue
}
switch f.Type.Kind() {
case reflect.Ptr:
if f.Type.Elem().Kind() == reflect.Struct {
if !vf.IsNil() {
if vf, err = cldr.inheritStructPtr(vf, pf); err != nil {
return reflect.Value{}, err
}
vf.Interface().(Elem).setEnclosing(nv.Interface().(Elem))
nv.Elem().FieldByIndex(i.index).Set(vf)
} else if !pf.IsNil() {
n := cldr.newNode(pf.Elem(), v)
if vf, err = cldr.inheritStructPtr(n, pf); err != nil {
return reflect.Value{}, err
}
vf.Interface().(Elem).setEnclosing(nv.Interface().(Elem))
nv.Elem().FieldByIndex(i.index).Set(vf)
}
}
case reflect.Slice:
vf, err := cldr.inheritSlice(nv.Elem(), vf, pf)
if err != nil {
return reflect.Zero(t), err
}
nv.Elem().FieldByIndex(i.index).Set(vf)
}
}
return nv, nil
}
func root(e Elem) *LDML {
for ; e.enclosing() != nil; e = e.enclosing() {
}
return e.(*LDML)
}
// inheritStructPtr first merges possible aliases in with v and then inherits
// any underspecified elements from parent.
func (cldr *CLDR) inheritStructPtr(v, parent reflect.Value) (r reflect.Value, err error) {
if !v.IsNil() {
e := v.Interface().(Elem).GetCommon()
alias := e.Alias
if alias == nil && !parent.IsNil() {
alias = parent.Interface().(Elem).GetCommon().Alias
}
if alias != nil {
a, err := cldr.resolveAlias(v.Interface().(Elem), alias.Source, alias.Path)
if a != nil {
if v, err = cldr.inheritFields(v.Elem(), reflect.ValueOf(a).Elem()); err != nil {
return reflect.Value{}, err
}
}
}
if !parent.IsNil() {
return cldr.inheritFields(v.Elem(), parent.Elem())
}
} else if parent.IsNil() {
panic("should not reach here")
}
return v, nil
}
// Must be slice of struct pointers.
func (cldr *CLDR) inheritSlice(enc, v, parent reflect.Value) (res reflect.Value, err error) {
t := v.Type()
index := make(map[string]reflect.Value)
if !v.IsNil() {
for i := 0; i < v.Len(); i++ {
vi := v.Index(i)
key := attrKey(vi)
index[key] = vi
}
}
if !parent.IsNil() {
for i := 0; i < parent.Len(); i++ {
vi := parent.Index(i)
key := attrKey(vi)
if w, ok := index[key]; ok {
index[key], err = cldr.inheritStructPtr(w, vi)
} else {
n := cldr.newNode(vi.Elem(), enc)
index[key], err = cldr.inheritStructPtr(n, vi)
}
index[key].Interface().(Elem).setEnclosing(enc.Addr().Interface().(Elem))
if err != nil {
return v, err
}
}
}
keys := make([]string, 0, len(index))
for k, _ := range index {
keys = append(keys, k)
}
sort.Strings(keys)
sl := reflect.MakeSlice(t, len(index), len(index))
for i, k := range keys {
sl.Index(i).Set(index[k])
}
return sl, nil
}
func parentLocale(loc string) string {
parts := strings.Split(loc, "_")
if len(parts) == 1 {
return "root"
}
parts = parts[:len(parts)-1]
key := strings.Join(parts, "_")
return key
}
func (cldr *CLDR) resolve(loc string) (res *LDML, err error) {
if r := cldr.resolved[loc]; r != nil {
return r, nil
}
x := cldr.RawLDML(loc)
if x == nil {
return nil, fmt.Errorf("cldr: unknown locale %q", loc)
}
var v reflect.Value
if loc == "root" {
x = deepCopy(reflect.ValueOf(x)).Interface().(*LDML)
linkEnclosing(nil, x)
err = cldr.aliasResolver().visit(x)
} else {
key := parentLocale(loc)
var parent *LDML
for ; cldr.locale[key] == nil; key = parentLocale(key) {
}
if parent, err = cldr.resolve(key); err != nil {
return nil, err
}
v, err = cldr.inheritFields(reflect.ValueOf(x).Elem(), reflect.ValueOf(parent).Elem())
x = v.Interface().(*LDML)
linkEnclosing(nil, x)
}
if err != nil {
return nil, err
}
cldr.resolved[loc] = x
return x, err
}
// finalize finalizes the initialization of the raw LDML structs. It also
// removed unwanted fields, as specified by filter, so that they will not
// be unnecessarily evaluated.
func (cldr *CLDR) finalize(filter []string) {
for _, x := range cldr.locale {
if filter != nil {
v := reflect.ValueOf(x).Elem()
t := v.Type()
for i := 0; i < v.NumField(); i++ {
f := t.Field(i)
name, _ := xmlName(f)
if name != "" && name != "identity" && !in(filter, name) {
v.Field(i).Set(reflect.Zero(f.Type))
}
}
}
linkEnclosing(nil, x) // for resolving aliases and paths
setNames(x, "ldml")
}
}

144
vendor/golang.org/x/text/unicode/cldr/slice.go generated vendored
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@ -1,144 +0,0 @@
// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package cldr
import (
"fmt"
"reflect"
"sort"
)
// Slice provides utilities for modifying slices of elements.
// It can be wrapped around any slice of which the element type implements
// interface Elem.
type Slice struct {
ptr reflect.Value
typ reflect.Type
}
// Value returns the reflect.Value of the underlying slice.
func (s *Slice) Value() reflect.Value {
return s.ptr.Elem()
}
// MakeSlice wraps a pointer to a slice of Elems.
// It replaces the array pointed to by the slice so that subsequent modifications
// do not alter the data in a CLDR type.
// It panics if an incorrect type is passed.
func MakeSlice(slicePtr interface{}) Slice {
ptr := reflect.ValueOf(slicePtr)
if ptr.Kind() != reflect.Ptr {
panic(fmt.Sprintf("MakeSlice: argument must be pointer to slice, found %v", ptr.Type()))
}
sl := ptr.Elem()
if sl.Kind() != reflect.Slice {
panic(fmt.Sprintf("MakeSlice: argument must point to a slice, found %v", sl.Type()))
}
intf := reflect.TypeOf((*Elem)(nil)).Elem()
if !sl.Type().Elem().Implements(intf) {
panic(fmt.Sprintf("MakeSlice: element type of slice (%v) does not implement Elem", sl.Type().Elem()))
}
nsl := reflect.MakeSlice(sl.Type(), sl.Len(), sl.Len())
reflect.Copy(nsl, sl)
sl.Set(nsl)
return Slice{
ptr: ptr,
typ: sl.Type().Elem().Elem(),
}
}
func (s Slice) indexForAttr(a string) []int {
for i := iter(reflect.Zero(s.typ)); !i.done(); i.next() {
if n, _ := xmlName(i.field()); n == a {
return i.index
}
}
panic(fmt.Sprintf("MakeSlice: no attribute %q for type %v", a, s.typ))
}
// Filter filters s to only include elements for which fn returns true.
func (s Slice) Filter(fn func(e Elem) bool) {
k := 0
sl := s.Value()
for i := 0; i < sl.Len(); i++ {
vi := sl.Index(i)
if fn(vi.Interface().(Elem)) {
sl.Index(k).Set(vi)
k++
}
}
sl.Set(sl.Slice(0, k))
}
// Group finds elements in s for which fn returns the same value and groups
// them in a new Slice.
func (s Slice) Group(fn func(e Elem) string) []Slice {
m := make(map[string][]reflect.Value)
sl := s.Value()
for i := 0; i < sl.Len(); i++ {
vi := sl.Index(i)
key := fn(vi.Interface().(Elem))
m[key] = append(m[key], vi)
}
keys := []string{}
for k, _ := range m {
keys = append(keys, k)
}
sort.Strings(keys)
res := []Slice{}
for _, k := range keys {
nsl := reflect.New(sl.Type())
nsl.Elem().Set(reflect.Append(nsl.Elem(), m[k]...))
res = append(res, MakeSlice(nsl.Interface()))
}
return res
}
// SelectAnyOf filters s to contain only elements for which attr matches
// any of the values.
func (s Slice) SelectAnyOf(attr string, values ...string) {
index := s.indexForAttr(attr)
s.Filter(func(e Elem) bool {
vf := reflect.ValueOf(e).Elem().FieldByIndex(index)
return in(values, vf.String())
})
}
// SelectOnePerGroup filters s to include at most one element e per group of
// elements matching Key(attr), where e has an attribute a that matches any
// the values in v.
// If more than one element in a group matches a value in v preference
// is given to the element that matches the first value in v.
func (s Slice) SelectOnePerGroup(a string, v []string) {
index := s.indexForAttr(a)
grouped := s.Group(func(e Elem) string { return Key(e, a) })
sl := s.Value()
sl.Set(sl.Slice(0, 0))
for _, g := range grouped {
e := reflect.Value{}
found := len(v)
gsl := g.Value()
for i := 0; i < gsl.Len(); i++ {
vi := gsl.Index(i).Elem().FieldByIndex(index)
j := 0
for ; j < len(v) && v[j] != vi.String(); j++ {
}
if j < found {
found = j
e = gsl.Index(i)
}
}
if found < len(v) {
sl.Set(reflect.Append(sl, e))
}
}
}
// SelectDraft drops all elements from the list with a draft level smaller than d
// and selects the highest draft level of the remaining.
// This method assumes that the input CLDR is canonicalized.
func (s Slice) SelectDraft(d Draft) {
s.SelectOnePerGroup("draft", drafts[len(drafts)-2-int(d):])
}

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vendor/golang.org/x/text/unicode/cldr/xml.go generated vendored
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27
vendor/golang.org/x/text/unicode/norm/LICENSE generated vendored
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@ -1,27 +0,0 @@
Copyright (c) 2009 The Go Authors. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above
copyright notice, this list of conditions and the following disclaimer
in the documentation and/or other materials provided with the
distribution.
* Neither the name of Google Inc. nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.