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// Copyright 2015 The Hugo Authors. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package tpl
import (
"github.com/nicksnyder/go-i18n/i18n/bundle"
"github.com/spf13/hugo/helpers"
jww "github.com/spf13/jwalterweatherman"
"github.com/spf13/viper"
)
var (
// Logi18nWarnings set to true to print warnings about missing language strings
Logi18nWarnings bool
i18nWarningLogger = helpers.NewDistinctFeedbackLogger()
currentLanguage *helpers.Language
)
type translate struct {
translateFuncs map[string]bundle.TranslateFunc
current bundle.TranslateFunc
}
var translator *translate
// SetTranslateLang sets the translations language to use during template processing.
// This construction is unfortunate, but the template system is currently global.
func SetTranslateLang(language *helpers.Language) error {
currentLanguage = language
if f, ok := translator.translateFuncs[language.Lang]; ok {
translator.current = f
} else {
jww.WARN.Printf("Translation func for language %v not found, use default.", language.Lang)
translator.current = translator.translateFuncs[viper.GetString("defaultContentLanguage")]
}
return nil
}
// SetI18nTfuncs sets the language bundle to be used for i18n.
func SetI18nTfuncs(bndl *bundle.Bundle) {
translator = &translate{translateFuncs: make(map[string]bundle.TranslateFunc)}
defaultContentLanguage := viper.GetString("defaultContentLanguage")
var (
defaultT bundle.TranslateFunc
err error
)
defaultT, err = bndl.Tfunc(defaultContentLanguage)
if err != nil {
jww.WARN.Printf("No translation bundle found for default language %q", defaultContentLanguage)
}
enableMissingTranslationPlaceholders := viper.GetBool("enableMissingTranslationPlaceholders")
for _, lang := range bndl.LanguageTags() {
currentLang := lang
translator.translateFuncs[currentLang] = func(translationID string, args ...interface{}) string {
tFunc, err := bndl.Tfunc(currentLang)
if err != nil {
jww.WARN.Printf("could not load translations for language %q (%s), will use default content language.\n", lang, err)
} else if translated := tFunc(translationID, args...); translated != translationID {
return translated
}
if Logi18nWarnings {
i18nWarningLogger.Printf("i18n|MISSING_TRANSLATION|%s|%s", currentLang, translationID)
}
if enableMissingTranslationPlaceholders {
return "[i18n] " + translationID
}
if defaultT != nil {
if translated := defaultT(translationID, args...); translated != translationID {
return translated
}
}
return ""
}
}
}
func i18nTranslate(id string, args ...interface{}) (string, error) {
if translator == nil || translator.current == nil {
helpers.DistinctErrorLog.Printf("i18n not initialized, check that you have language file (in i18n) that matches the site language or the default language.")
return "", nil
}
return translator.current(id, args...), nil
}
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