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