mirror of
https://github.com/cwinfo/matterbridge.git
synced 2024-12-27 10:05:39 +00:00
738 lines
19 KiB
Go
738 lines
19 KiB
Go
package stdlib
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import (
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"fmt"
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"regexp"
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"strconv"
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"strings"
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"unicode/utf8"
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"github.com/d5/tengo"
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"github.com/d5/tengo/objects"
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)
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var textModule = map[string]objects.Object{
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"re_match": &objects.UserFunction{Name: "re_match", Value: textREMatch}, // re_match(pattern, text) => bool/error
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"re_find": &objects.UserFunction{Name: "re_find", Value: textREFind}, // re_find(pattern, text, count) => [[{text:,begin:,end:}]]/undefined
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"re_replace": &objects.UserFunction{Name: "re_replace", Value: textREReplace}, // re_replace(pattern, text, repl) => string/error
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"re_split": &objects.UserFunction{Name: "re_split", Value: textRESplit}, // re_split(pattern, text, count) => [string]/error
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"re_compile": &objects.UserFunction{Name: "re_compile", Value: textRECompile}, // re_compile(pattern) => Regexp/error
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"compare": &objects.UserFunction{Name: "compare", Value: FuncASSRI(strings.Compare)}, // compare(a, b) => int
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"contains": &objects.UserFunction{Name: "contains", Value: FuncASSRB(strings.Contains)}, // contains(s, substr) => bool
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"contains_any": &objects.UserFunction{Name: "contains_any", Value: FuncASSRB(strings.ContainsAny)}, // contains_any(s, chars) => bool
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"count": &objects.UserFunction{Name: "count", Value: FuncASSRI(strings.Count)}, // count(s, substr) => int
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"equal_fold": &objects.UserFunction{Name: "equal_fold", Value: FuncASSRB(strings.EqualFold)}, // "equal_fold(s, t) => bool
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"fields": &objects.UserFunction{Name: "fields", Value: FuncASRSs(strings.Fields)}, // fields(s) => [string]
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"has_prefix": &objects.UserFunction{Name: "has_prefix", Value: FuncASSRB(strings.HasPrefix)}, // has_prefix(s, prefix) => bool
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"has_suffix": &objects.UserFunction{Name: "has_suffix", Value: FuncASSRB(strings.HasSuffix)}, // has_suffix(s, suffix) => bool
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"index": &objects.UserFunction{Name: "index", Value: FuncASSRI(strings.Index)}, // index(s, substr) => int
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"index_any": &objects.UserFunction{Name: "index_any", Value: FuncASSRI(strings.IndexAny)}, // index_any(s, chars) => int
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"join": &objects.UserFunction{Name: "join", Value: textJoin}, // join(arr, sep) => string
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"last_index": &objects.UserFunction{Name: "last_index", Value: FuncASSRI(strings.LastIndex)}, // last_index(s, substr) => int
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"last_index_any": &objects.UserFunction{Name: "last_index_any", Value: FuncASSRI(strings.LastIndexAny)}, // last_index_any(s, chars) => int
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"repeat": &objects.UserFunction{Name: "repeat", Value: textRepeat}, // repeat(s, count) => string
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"replace": &objects.UserFunction{Name: "replace", Value: textReplace}, // replace(s, old, new, n) => string
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"split": &objects.UserFunction{Name: "split", Value: FuncASSRSs(strings.Split)}, // split(s, sep) => [string]
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"split_after": &objects.UserFunction{Name: "split_after", Value: FuncASSRSs(strings.SplitAfter)}, // split_after(s, sep) => [string]
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"split_after_n": &objects.UserFunction{Name: "split_after_n", Value: FuncASSIRSs(strings.SplitAfterN)}, // split_after_n(s, sep, n) => [string]
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"split_n": &objects.UserFunction{Name: "split_n", Value: FuncASSIRSs(strings.SplitN)}, // split_n(s, sep, n) => [string]
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"title": &objects.UserFunction{Name: "title", Value: FuncASRS(strings.Title)}, // title(s) => string
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"to_lower": &objects.UserFunction{Name: "to_lower", Value: FuncASRS(strings.ToLower)}, // to_lower(s) => string
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"to_title": &objects.UserFunction{Name: "to_title", Value: FuncASRS(strings.ToTitle)}, // to_title(s) => string
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"to_upper": &objects.UserFunction{Name: "to_upper", Value: FuncASRS(strings.ToUpper)}, // to_upper(s) => string
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"trim_left": &objects.UserFunction{Name: "trim_left", Value: FuncASSRS(strings.TrimLeft)}, // trim_left(s, cutset) => string
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"trim_prefix": &objects.UserFunction{Name: "trim_prefix", Value: FuncASSRS(strings.TrimPrefix)}, // trim_prefix(s, prefix) => string
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"trim_right": &objects.UserFunction{Name: "trim_right", Value: FuncASSRS(strings.TrimRight)}, // trim_right(s, cutset) => string
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"trim_space": &objects.UserFunction{Name: "trim_space", Value: FuncASRS(strings.TrimSpace)}, // trim_space(s) => string
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"trim_suffix": &objects.UserFunction{Name: "trim_suffix", Value: FuncASSRS(strings.TrimSuffix)}, // trim_suffix(s, suffix) => string
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"atoi": &objects.UserFunction{Name: "atoi", Value: FuncASRIE(strconv.Atoi)}, // atoi(str) => int/error
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"format_bool": &objects.UserFunction{Name: "format_bool", Value: textFormatBool}, // format_bool(b) => string
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"format_float": &objects.UserFunction{Name: "format_float", Value: textFormatFloat}, // format_float(f, fmt, prec, bits) => string
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"format_int": &objects.UserFunction{Name: "format_int", Value: textFormatInt}, // format_int(i, base) => string
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"itoa": &objects.UserFunction{Name: "itoa", Value: FuncAIRS(strconv.Itoa)}, // itoa(i) => string
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"parse_bool": &objects.UserFunction{Name: "parse_bool", Value: textParseBool}, // parse_bool(str) => bool/error
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"parse_float": &objects.UserFunction{Name: "parse_float", Value: textParseFloat}, // parse_float(str, bits) => float/error
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"parse_int": &objects.UserFunction{Name: "parse_int", Value: textParseInt}, // parse_int(str, base, bits) => int/error
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"quote": &objects.UserFunction{Name: "quote", Value: FuncASRS(strconv.Quote)}, // quote(str) => string
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"unquote": &objects.UserFunction{Name: "unquote", Value: FuncASRSE(strconv.Unquote)}, // unquote(str) => string/error
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}
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func textREMatch(args ...objects.Object) (ret objects.Object, err error) {
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if len(args) != 2 {
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err = objects.ErrWrongNumArguments
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return
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}
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s1, ok := objects.ToString(args[0])
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if !ok {
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err = objects.ErrInvalidArgumentType{
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Name: "first",
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Expected: "string(compatible)",
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Found: args[0].TypeName(),
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}
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return
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}
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s2, ok := objects.ToString(args[1])
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if !ok {
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err = objects.ErrInvalidArgumentType{
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Name: "second",
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Expected: "string(compatible)",
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Found: args[1].TypeName(),
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}
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return
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}
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matched, err := regexp.MatchString(s1, s2)
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if err != nil {
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ret = wrapError(err)
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return
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}
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if matched {
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ret = objects.TrueValue
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} else {
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ret = objects.FalseValue
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}
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return
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}
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func textREFind(args ...objects.Object) (ret objects.Object, err error) {
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numArgs := len(args)
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if numArgs != 2 && numArgs != 3 {
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err = objects.ErrWrongNumArguments
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return
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}
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s1, ok := objects.ToString(args[0])
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if !ok {
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err = objects.ErrInvalidArgumentType{
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Name: "first",
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Expected: "string(compatible)",
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Found: args[0].TypeName(),
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}
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return
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}
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re, err := regexp.Compile(s1)
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if err != nil {
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ret = wrapError(err)
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return
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}
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s2, ok := objects.ToString(args[1])
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if !ok {
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err = objects.ErrInvalidArgumentType{
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Name: "second",
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Expected: "string(compatible)",
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Found: args[1].TypeName(),
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}
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return
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}
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if numArgs < 3 {
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m := re.FindStringSubmatchIndex(s2)
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if m == nil {
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ret = objects.UndefinedValue
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return
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}
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arr := &objects.Array{}
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for i := 0; i < len(m); i += 2 {
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arr.Value = append(arr.Value, &objects.ImmutableMap{Value: map[string]objects.Object{
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"text": &objects.String{Value: s2[m[i]:m[i+1]]},
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"begin": &objects.Int{Value: int64(m[i])},
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"end": &objects.Int{Value: int64(m[i+1])},
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}})
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}
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ret = &objects.Array{Value: []objects.Object{arr}}
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return
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}
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i3, ok := objects.ToInt(args[2])
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if !ok {
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err = objects.ErrInvalidArgumentType{
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Name: "third",
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Expected: "int(compatible)",
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Found: args[2].TypeName(),
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}
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return
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}
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m := re.FindAllStringSubmatchIndex(s2, i3)
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if m == nil {
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ret = objects.UndefinedValue
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return
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}
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arr := &objects.Array{}
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for _, m := range m {
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subMatch := &objects.Array{}
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for i := 0; i < len(m); i += 2 {
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subMatch.Value = append(subMatch.Value, &objects.ImmutableMap{Value: map[string]objects.Object{
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"text": &objects.String{Value: s2[m[i]:m[i+1]]},
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"begin": &objects.Int{Value: int64(m[i])},
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"end": &objects.Int{Value: int64(m[i+1])},
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}})
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}
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arr.Value = append(arr.Value, subMatch)
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}
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ret = arr
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return
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}
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func textREReplace(args ...objects.Object) (ret objects.Object, err error) {
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if len(args) != 3 {
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err = objects.ErrWrongNumArguments
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return
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}
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s1, ok := objects.ToString(args[0])
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if !ok {
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err = objects.ErrInvalidArgumentType{
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Name: "first",
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Expected: "string(compatible)",
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Found: args[0].TypeName(),
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}
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return
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}
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s2, ok := objects.ToString(args[1])
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if !ok {
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err = objects.ErrInvalidArgumentType{
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Name: "second",
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Expected: "string(compatible)",
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Found: args[1].TypeName(),
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}
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return
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}
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s3, ok := objects.ToString(args[2])
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if !ok {
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err = objects.ErrInvalidArgumentType{
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Name: "third",
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Expected: "string(compatible)",
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Found: args[2].TypeName(),
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}
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return
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}
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re, err := regexp.Compile(s1)
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if err != nil {
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ret = wrapError(err)
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} else {
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s, ok := doTextRegexpReplace(re, s2, s3)
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if !ok {
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return nil, objects.ErrStringLimit
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}
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ret = &objects.String{Value: s}
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}
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return
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}
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func textRESplit(args ...objects.Object) (ret objects.Object, err error) {
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numArgs := len(args)
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if numArgs != 2 && numArgs != 3 {
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err = objects.ErrWrongNumArguments
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return
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}
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s1, ok := objects.ToString(args[0])
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if !ok {
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err = objects.ErrInvalidArgumentType{
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Name: "first",
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Expected: "string(compatible)",
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Found: args[0].TypeName(),
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}
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return
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}
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s2, ok := objects.ToString(args[1])
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if !ok {
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err = objects.ErrInvalidArgumentType{
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Name: "second",
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Expected: "string(compatible)",
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Found: args[1].TypeName(),
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}
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return
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}
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var i3 = -1
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if numArgs > 2 {
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i3, ok = objects.ToInt(args[2])
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if !ok {
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err = objects.ErrInvalidArgumentType{
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Name: "third",
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Expected: "int(compatible)",
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Found: args[2].TypeName(),
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}
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return
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}
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}
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re, err := regexp.Compile(s1)
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if err != nil {
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ret = wrapError(err)
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return
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}
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arr := &objects.Array{}
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for _, s := range re.Split(s2, i3) {
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arr.Value = append(arr.Value, &objects.String{Value: s})
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}
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ret = arr
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return
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}
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func textRECompile(args ...objects.Object) (ret objects.Object, err error) {
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if len(args) != 1 {
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err = objects.ErrWrongNumArguments
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return
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}
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s1, ok := objects.ToString(args[0])
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if !ok {
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err = objects.ErrInvalidArgumentType{
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Name: "first",
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Expected: "string(compatible)",
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Found: args[0].TypeName(),
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}
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return
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}
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re, err := regexp.Compile(s1)
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if err != nil {
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ret = wrapError(err)
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} else {
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ret = makeTextRegexp(re)
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}
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return
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}
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func textReplace(args ...objects.Object) (ret objects.Object, err error) {
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if len(args) != 4 {
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err = objects.ErrWrongNumArguments
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return
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}
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s1, ok := objects.ToString(args[0])
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if !ok {
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err = objects.ErrInvalidArgumentType{
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Name: "first",
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Expected: "string(compatible)",
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Found: args[0].TypeName(),
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}
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return
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}
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s2, ok := objects.ToString(args[1])
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if !ok {
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err = objects.ErrInvalidArgumentType{
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Name: "second",
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Expected: "string(compatible)",
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Found: args[1].TypeName(),
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}
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return
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}
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s3, ok := objects.ToString(args[2])
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if !ok {
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err = objects.ErrInvalidArgumentType{
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Name: "third",
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Expected: "string(compatible)",
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Found: args[2].TypeName(),
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}
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return
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}
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i4, ok := objects.ToInt(args[3])
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if !ok {
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err = objects.ErrInvalidArgumentType{
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Name: "fourth",
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Expected: "int(compatible)",
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Found: args[3].TypeName(),
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}
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return
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}
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s, ok := doTextReplace(s1, s2, s3, i4)
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if !ok {
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err = objects.ErrStringLimit
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return
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}
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ret = &objects.String{Value: s}
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return
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}
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func textRepeat(args ...objects.Object) (ret objects.Object, err error) {
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if len(args) != 2 {
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return nil, objects.ErrWrongNumArguments
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}
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s1, ok := objects.ToString(args[0])
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if !ok {
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return nil, objects.ErrInvalidArgumentType{
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Name: "first",
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Expected: "string(compatible)",
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Found: args[0].TypeName(),
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}
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}
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i2, ok := objects.ToInt(args[1])
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if !ok {
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return nil, objects.ErrInvalidArgumentType{
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Name: "second",
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Expected: "int(compatible)",
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Found: args[1].TypeName(),
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}
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}
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if len(s1)*i2 > tengo.MaxStringLen {
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return nil, objects.ErrStringLimit
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}
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return &objects.String{Value: strings.Repeat(s1, i2)}, nil
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}
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func textJoin(args ...objects.Object) (ret objects.Object, err error) {
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if len(args) != 2 {
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return nil, objects.ErrWrongNumArguments
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}
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|
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var slen int
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var ss1 []string
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switch arg0 := args[0].(type) {
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case *objects.Array:
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for idx, a := range arg0.Value {
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as, ok := objects.ToString(a)
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if !ok {
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return nil, objects.ErrInvalidArgumentType{
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Name: fmt.Sprintf("first[%d]", idx),
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Expected: "string(compatible)",
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Found: a.TypeName(),
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}
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}
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slen += len(as)
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ss1 = append(ss1, as)
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}
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case *objects.ImmutableArray:
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for idx, a := range arg0.Value {
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as, ok := objects.ToString(a)
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if !ok {
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return nil, objects.ErrInvalidArgumentType{
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Name: fmt.Sprintf("first[%d]", idx),
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Expected: "string(compatible)",
|
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Found: a.TypeName(),
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}
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}
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slen += len(as)
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ss1 = append(ss1, as)
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}
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default:
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return nil, objects.ErrInvalidArgumentType{
|
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Name: "first",
|
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Expected: "array",
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Found: args[0].TypeName(),
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}
|
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}
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s2, ok := objects.ToString(args[1])
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if !ok {
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return nil, objects.ErrInvalidArgumentType{
|
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Name: "second",
|
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Expected: "string(compatible)",
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Found: args[1].TypeName(),
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}
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}
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|
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// make sure output length does not exceed the limit
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if slen+len(s2)*(len(ss1)-1) > tengo.MaxStringLen {
|
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return nil, objects.ErrStringLimit
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}
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return &objects.String{Value: strings.Join(ss1, s2)}, nil
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}
|
|
|
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func textFormatBool(args ...objects.Object) (ret objects.Object, err error) {
|
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if len(args) != 1 {
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err = objects.ErrWrongNumArguments
|
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return
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}
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b1, ok := args[0].(*objects.Bool)
|
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if !ok {
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err = objects.ErrInvalidArgumentType{
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Name: "first",
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Expected: "bool",
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Found: args[0].TypeName(),
|
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}
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return
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}
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|
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if b1 == objects.TrueValue {
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ret = &objects.String{Value: "true"}
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} else {
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ret = &objects.String{Value: "false"}
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}
|
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return
|
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}
|
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|
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func textFormatFloat(args ...objects.Object) (ret objects.Object, err error) {
|
|
if len(args) != 4 {
|
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err = objects.ErrWrongNumArguments
|
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return
|
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}
|
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|
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f1, ok := args[0].(*objects.Float)
|
|
if !ok {
|
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err = objects.ErrInvalidArgumentType{
|
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Name: "first",
|
|
Expected: "float",
|
|
Found: args[0].TypeName(),
|
|
}
|
|
return
|
|
}
|
|
|
|
s2, ok := objects.ToString(args[1])
|
|
if !ok {
|
|
err = objects.ErrInvalidArgumentType{
|
|
Name: "second",
|
|
Expected: "string(compatible)",
|
|
Found: args[1].TypeName(),
|
|
}
|
|
return
|
|
}
|
|
|
|
i3, ok := objects.ToInt(args[2])
|
|
if !ok {
|
|
err = objects.ErrInvalidArgumentType{
|
|
Name: "third",
|
|
Expected: "int(compatible)",
|
|
Found: args[2].TypeName(),
|
|
}
|
|
return
|
|
}
|
|
|
|
i4, ok := objects.ToInt(args[3])
|
|
if !ok {
|
|
err = objects.ErrInvalidArgumentType{
|
|
Name: "fourth",
|
|
Expected: "int(compatible)",
|
|
Found: args[3].TypeName(),
|
|
}
|
|
return
|
|
}
|
|
|
|
ret = &objects.String{Value: strconv.FormatFloat(f1.Value, s2[0], i3, i4)}
|
|
|
|
return
|
|
}
|
|
|
|
func textFormatInt(args ...objects.Object) (ret objects.Object, err error) {
|
|
if len(args) != 2 {
|
|
err = objects.ErrWrongNumArguments
|
|
return
|
|
}
|
|
|
|
i1, ok := args[0].(*objects.Int)
|
|
if !ok {
|
|
err = objects.ErrInvalidArgumentType{
|
|
Name: "first",
|
|
Expected: "int",
|
|
Found: args[0].TypeName(),
|
|
}
|
|
return
|
|
}
|
|
|
|
i2, ok := objects.ToInt(args[1])
|
|
if !ok {
|
|
err = objects.ErrInvalidArgumentType{
|
|
Name: "second",
|
|
Expected: "int(compatible)",
|
|
Found: args[1].TypeName(),
|
|
}
|
|
return
|
|
}
|
|
|
|
ret = &objects.String{Value: strconv.FormatInt(i1.Value, i2)}
|
|
|
|
return
|
|
}
|
|
|
|
func textParseBool(args ...objects.Object) (ret objects.Object, err error) {
|
|
if len(args) != 1 {
|
|
err = objects.ErrWrongNumArguments
|
|
return
|
|
}
|
|
|
|
s1, ok := args[0].(*objects.String)
|
|
if !ok {
|
|
err = objects.ErrInvalidArgumentType{
|
|
Name: "first",
|
|
Expected: "string",
|
|
Found: args[0].TypeName(),
|
|
}
|
|
return
|
|
}
|
|
|
|
parsed, err := strconv.ParseBool(s1.Value)
|
|
if err != nil {
|
|
ret = wrapError(err)
|
|
return
|
|
}
|
|
|
|
if parsed {
|
|
ret = objects.TrueValue
|
|
} else {
|
|
ret = objects.FalseValue
|
|
}
|
|
|
|
return
|
|
}
|
|
|
|
func textParseFloat(args ...objects.Object) (ret objects.Object, err error) {
|
|
if len(args) != 2 {
|
|
err = objects.ErrWrongNumArguments
|
|
return
|
|
}
|
|
|
|
s1, ok := args[0].(*objects.String)
|
|
if !ok {
|
|
err = objects.ErrInvalidArgumentType{
|
|
Name: "first",
|
|
Expected: "string",
|
|
Found: args[0].TypeName(),
|
|
}
|
|
return
|
|
}
|
|
|
|
i2, ok := objects.ToInt(args[1])
|
|
if !ok {
|
|
err = objects.ErrInvalidArgumentType{
|
|
Name: "second",
|
|
Expected: "int(compatible)",
|
|
Found: args[1].TypeName(),
|
|
}
|
|
return
|
|
}
|
|
|
|
parsed, err := strconv.ParseFloat(s1.Value, i2)
|
|
if err != nil {
|
|
ret = wrapError(err)
|
|
return
|
|
}
|
|
|
|
ret = &objects.Float{Value: parsed}
|
|
|
|
return
|
|
}
|
|
|
|
func textParseInt(args ...objects.Object) (ret objects.Object, err error) {
|
|
if len(args) != 3 {
|
|
err = objects.ErrWrongNumArguments
|
|
return
|
|
}
|
|
|
|
s1, ok := args[0].(*objects.String)
|
|
if !ok {
|
|
err = objects.ErrInvalidArgumentType{
|
|
Name: "first",
|
|
Expected: "string",
|
|
Found: args[0].TypeName(),
|
|
}
|
|
return
|
|
}
|
|
|
|
i2, ok := objects.ToInt(args[1])
|
|
if !ok {
|
|
err = objects.ErrInvalidArgumentType{
|
|
Name: "second",
|
|
Expected: "int(compatible)",
|
|
Found: args[1].TypeName(),
|
|
}
|
|
return
|
|
}
|
|
|
|
i3, ok := objects.ToInt(args[2])
|
|
if !ok {
|
|
err = objects.ErrInvalidArgumentType{
|
|
Name: "third",
|
|
Expected: "int(compatible)",
|
|
Found: args[2].TypeName(),
|
|
}
|
|
return
|
|
}
|
|
|
|
parsed, err := strconv.ParseInt(s1.Value, i2, i3)
|
|
if err != nil {
|
|
ret = wrapError(err)
|
|
return
|
|
}
|
|
|
|
ret = &objects.Int{Value: parsed}
|
|
|
|
return
|
|
}
|
|
|
|
// Modified implementation of strings.Replace
|
|
// to limit the maximum length of output string.
|
|
func doTextReplace(s, old, new string, n int) (string, bool) {
|
|
if old == new || n == 0 {
|
|
return s, true // avoid allocation
|
|
}
|
|
|
|
// Compute number of replacements.
|
|
if m := strings.Count(s, old); m == 0 {
|
|
return s, true // avoid allocation
|
|
} else if n < 0 || m < n {
|
|
n = m
|
|
}
|
|
|
|
// Apply replacements to buffer.
|
|
t := make([]byte, len(s)+n*(len(new)-len(old)))
|
|
w := 0
|
|
start := 0
|
|
for i := 0; i < n; i++ {
|
|
j := start
|
|
if len(old) == 0 {
|
|
if i > 0 {
|
|
_, wid := utf8.DecodeRuneInString(s[start:])
|
|
j += wid
|
|
}
|
|
} else {
|
|
j += strings.Index(s[start:], old)
|
|
}
|
|
|
|
ssj := s[start:j]
|
|
if w+len(ssj)+len(new) > tengo.MaxStringLen {
|
|
return "", false
|
|
}
|
|
|
|
w += copy(t[w:], ssj)
|
|
w += copy(t[w:], new)
|
|
start = j + len(old)
|
|
}
|
|
|
|
ss := s[start:]
|
|
if w+len(ss) > tengo.MaxStringLen {
|
|
return "", false
|
|
}
|
|
|
|
w += copy(t[w:], ss)
|
|
|
|
return string(t[0:w]), true
|
|
}
|