114 lines
3.8 KiB
Go
114 lines
3.8 KiB
Go
// Copyright 2017 The Hugo Authors. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package i18n
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import (
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"github.com/nicksnyder/go-i18n/i18n/bundle"
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"github.com/gohugoio/hugo/config"
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"github.com/gohugoio/hugo/helpers"
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jww "github.com/spf13/jwalterweatherman"
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)
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var (
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i18nWarningLogger = helpers.NewDistinctFeedbackLogger()
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)
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// Translator handles i18n translations.
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type Translator struct {
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translateFuncs map[string]bundle.TranslateFunc
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cfg config.Provider
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logger *jww.Notepad
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}
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// NewTranslator creates a new Translator for the given language bundle and configuration.
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func NewTranslator(b *bundle.Bundle, cfg config.Provider, logger *jww.Notepad) Translator {
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t := Translator{cfg: cfg, logger: logger, translateFuncs: make(map[string]bundle.TranslateFunc)}
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t.initFuncs(b)
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return t
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}
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// Func gets the translate func for the given language, or for the default
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// configured language if not found.
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func (t Translator) Func(lang string) bundle.TranslateFunc {
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if f, ok := t.translateFuncs[lang]; ok {
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return f
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}
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t.logger.WARN.Printf("Translation func for language %v not found, use default.", lang)
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if f, ok := t.translateFuncs[t.cfg.GetString("defaultContentLanguage")]; ok {
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return f
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}
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t.logger.WARN.Println("i18n not initialized, check that you have language file (in i18n) that matches the site language or the default language.")
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return func(translationID string, args ...interface{}) string {
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return ""
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}
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}
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func (t Translator) initFuncs(bndl *bundle.Bundle) {
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defaultContentLanguage := t.cfg.GetString("defaultContentLanguage")
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defaultT, err := bndl.Tfunc(defaultContentLanguage)
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if err != nil {
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jww.WARN.Printf("No translation bundle found for default language %q", defaultContentLanguage)
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}
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enableMissingTranslationPlaceholders := t.cfg.GetBool("enableMissingTranslationPlaceholders")
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for _, lang := range bndl.LanguageTags() {
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currentLang := lang
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t.translateFuncs[currentLang] = func(translationID string, args ...interface{}) string {
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tFunc, err := bndl.Tfunc(currentLang)
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if err != nil {
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jww.WARN.Printf("could not load translations for language %q (%s), will use default content language.\n", lang, err)
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}
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translated := tFunc(translationID, args...)
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if translated != translationID {
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return translated
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}
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// If there is no translation for translationID,
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// then Tfunc returns translationID itself.
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// But if user set same translationID and translation, we should check
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// if it really untranslated:
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if isIDTranslated(currentLang, translationID, bndl) {
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return translated
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}
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if t.cfg.GetBool("logI18nWarnings") {
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i18nWarningLogger.Printf("i18n|MISSING_TRANSLATION|%s|%s", currentLang, translationID)
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}
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if enableMissingTranslationPlaceholders {
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return "[i18n] " + translationID
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}
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if defaultT != nil {
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translated := defaultT(translationID, args...)
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if translated != translationID {
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return translated
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}
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if isIDTranslated(defaultContentLanguage, translationID, bndl) {
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return translated
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}
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}
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return ""
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}
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}
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}
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// If bndl contains the translationID for specified currentLang,
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// then the translationID is actually translated.
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func isIDTranslated(lang, id string, b *bundle.Bundle) bool {
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_, contains := b.Translations()[lang][id]
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return contains
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}
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