100 lines
2.9 KiB
Go
100 lines
2.9 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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"errors"
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"github.com/gohugoio/hugo/deps"
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"github.com/gohugoio/hugo/helpers"
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"github.com/gohugoio/hugo/source"
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"github.com/nicksnyder/go-i18n/i18n/bundle"
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"github.com/nicksnyder/go-i18n/i18n/language"
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_errors "github.com/pkg/errors"
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)
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// TranslationProvider provides translation handling, i.e. loading
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// of bundles etc.
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type TranslationProvider struct {
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t Translator
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}
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// NewTranslationProvider creates a new translation provider.
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func NewTranslationProvider() *TranslationProvider {
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return &TranslationProvider{}
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}
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// Update updates the i18n func in the provided Deps.
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func (tp *TranslationProvider) Update(d *deps.Deps) error {
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sp := source.NewSourceSpec(d.PathSpec, d.BaseFs.SourceFilesystems.I18n.Fs)
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src := sp.NewFilesystem("")
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i18nBundle := bundle.New()
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en := language.GetPluralSpec("en")
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if en == nil {
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return errors.New("the English language has vanished like an old oak table")
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}
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var newLangs []string
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for _, r := range src.Files() {
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currentSpec := language.GetPluralSpec(r.BaseFileName())
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if currentSpec == nil {
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// This may is a language code not supported by go-i18n, it may be
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// Klingon or ... not even a fake language. Make sure it works.
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newLangs = append(newLangs, r.BaseFileName())
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}
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}
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if len(newLangs) > 0 {
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language.RegisterPluralSpec(newLangs, en)
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}
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// The source files are ordered so the most important comes first. Since this is a
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// last key win situation, we have to reverse the iteration order.
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files := src.Files()
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for i := len(files) - 1; i >= 0; i-- {
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if err := addTranslationFile(i18nBundle, files[i]); err != nil {
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return err
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}
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}
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tp.t = NewTranslator(i18nBundle, d.Cfg, d.Log)
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d.Translate = tp.t.Func(d.Language.Lang)
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return nil
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}
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func addTranslationFile(bundle *bundle.Bundle, r source.ReadableFile) error {
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f, err := r.Open()
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if err != nil {
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return _errors.Wrapf(err, "Failed to open translations file %q:", r.LogicalName())
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}
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defer f.Close()
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err = bundle.ParseTranslationFileBytes(r.LogicalName(), helpers.ReaderToBytes(f))
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if err != nil {
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return _errors.Wrapf(err, "Failed to load translations in file %q:", r.LogicalName())
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}
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return nil
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}
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// Clone sets the language func for the new language.
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func (tp *TranslationProvider) Clone(d *deps.Deps) error {
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d.Translate = tp.t.Func(d.Language.Lang)
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return nil
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}
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