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// Copyright 2020 The Gitea Authors. All rights reserved.
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// Use of this source code is governed by a MIT-style
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// license that can be found in the LICENSE file.
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package translation
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import (
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"sort"
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"strings"
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"code.gitea.io/gitea/modules/log"
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"code.gitea.io/gitea/modules/options"
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"code.gitea.io/gitea/modules/setting"
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"github.com/unknwon/i18n"
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"golang.org/x/text/language"
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)
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// Locale represents an interface to translation
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type Locale interface {
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Language() string
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Tr(string, ...interface{}) string
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TrN(cnt interface{}, key1, keyN string, args ...interface{}) string
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}
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// LangType represents a lang type
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type LangType struct {
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Lang, Name string
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}
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var (
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matcher language.Matcher
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allLangs []LangType
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supportedTags []language.Tag
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)
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// AllLangs returns all supported languages sorted by name
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func AllLangs() []LangType {
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return allLangs
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}
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// InitLocales loads the locales
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func InitLocales() {
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i18n.Reset()
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localeNames, err := options.Dir("locale")
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if err != nil {
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log.Fatal("Failed to list locale files: %v", err)
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}
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localFiles := make(map[string][]byte)
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for _, name := range localeNames {
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localFiles[name], err = options.Locale(name)
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if err != nil {
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log.Fatal("Failed to load %s locale file. %v", name, err)
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}
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}
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supportedTags = make([]language.Tag, len(setting.Langs))
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for i, lang := range setting.Langs {
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supportedTags[i] = language.Raw.Make(lang)
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}
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matcher = language.NewMatcher(supportedTags)
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for i := range setting.Names {
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key := "locale_" + setting.Langs[i] + ".ini"
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if err = i18n.SetMessageWithDesc(setting.Langs[i], setting.Names[i], localFiles[key]); err != nil {
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log.Error("Failed to set messages to %s: %v", setting.Langs[i], err)
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}
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}
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i18n.SetDefaultLang("en-US")
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allLangs = make([]LangType, 0, i18n.Count()-1)
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langs := i18n.ListLangs()
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names := i18n.ListLangDescs()
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for i, v := range langs {
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allLangs = append(allLangs, LangType{v, names[i]})
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}
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// Sort languages case insensitive according to their name - needed for the user settings
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sort.Slice(allLangs, func(i, j int) bool {
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return strings.ToLower(allLangs[i].Name) < strings.ToLower(allLangs[j].Name)
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})
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}
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// Match matches accept languages
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func Match(tags ...language.Tag) language.Tag {
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_, i, _ := matcher.Match(tags...)
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return supportedTags[i]
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}
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// locale represents the information of localization.
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type locale struct {
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Lang string
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}
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// NewLocale return a locale
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func NewLocale(lang string) Locale {
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return &locale{
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Lang: lang,
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}
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}
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func (l *locale) Language() string {
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return l.Lang
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}
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// Tr translates content to target language.
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func (l *locale) Tr(format string, args ...interface{}) string {
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return i18n.Tr(l.Lang, format, args...)
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}
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// Language specific rules for translating plural texts
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var trNLangRules = map[string]func(int64) int{
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// the default rule is "en-US" if a language isn't listed here
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"en-US": func(cnt int64) int {
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if cnt == 1 {
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return 0
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}
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return 1
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},
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"lv-LV": func(cnt int64) int {
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if cnt%10 == 1 && cnt%100 != 11 {
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return 0
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}
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return 1
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},
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"ru-RU": func(cnt int64) int {
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if cnt%10 == 1 && cnt%100 != 11 {
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return 0
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}
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return 1
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},
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"zh-CN": func(cnt int64) int {
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return 0
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},
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"zh-HK": func(cnt int64) int {
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return 0
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},
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"zh-TW": func(cnt int64) int {
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return 0
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},
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"fr-FR": func(cnt int64) int {
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if cnt > -2 && cnt < 2 {
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return 0
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}
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return 1
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},
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}
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// TrN returns translated message for plural text translation
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func (l *locale) TrN(cnt interface{}, key1, keyN string, args ...interface{}) string {
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var c int64
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if t, ok := cnt.(int); ok {
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c = int64(t)
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} else if t, ok := cnt.(int16); ok {
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c = int64(t)
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} else if t, ok := cnt.(int32); ok {
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c = int64(t)
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} else if t, ok := cnt.(int64); ok {
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c = t
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} else {
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return l.Tr(keyN, args...)
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}
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ruleFunc, ok := trNLangRules[l.Lang]
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if !ok {
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ruleFunc = trNLangRules["en-US"]
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}
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if ruleFunc(c) == 0 {
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return l.Tr(key1, args...)
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}
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return l.Tr(keyN, args...)
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}
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