144 lines
3.7 KiB
Go
144 lines
3.7 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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"encoding/json"
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"strings"
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"github.com/gohugoio/hugo/common/paths"
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"github.com/gohugoio/hugo/common/herrors"
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"golang.org/x/text/language"
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yaml "gopkg.in/yaml.v2"
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"github.com/gohugoio/go-i18n/v2/i18n"
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"github.com/gohugoio/hugo/helpers"
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toml "github.com/pelletier/go-toml/v2"
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"github.com/gohugoio/hugo/deps"
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"github.com/gohugoio/hugo/hugofs"
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"github.com/gohugoio/hugo/source"
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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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spec := source.NewSourceSpec(d.PathSpec, nil, nil)
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bundle := i18n.NewBundle(language.English)
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bundle.RegisterUnmarshalFunc("toml", toml.Unmarshal)
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bundle.RegisterUnmarshalFunc("yaml", yaml.Unmarshal)
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bundle.RegisterUnmarshalFunc("yml", yaml.Unmarshal)
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bundle.RegisterUnmarshalFunc("json", json.Unmarshal)
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// The source dirs 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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dirs := d.BaseFs.I18n.Dirs
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for i := len(dirs) - 1; i >= 0; i-- {
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dir := dirs[i]
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src := spec.NewFilesystemFromFileMetaInfo(dir)
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files, err := src.Files()
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if err != nil {
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return err
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}
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for _, file := range files {
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if err := addTranslationFile(bundle, file); err != nil {
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return err
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}
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}
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}
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tp.t = NewTranslator(bundle, 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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const artificialLangTagPrefix = "art-x-"
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func addTranslationFile(bundle *i18n.Bundle, r source.File) error {
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f, err := r.FileInfo().Meta().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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b := helpers.ReaderToBytes(f)
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f.Close()
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name := r.LogicalName()
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lang := paths.Filename(name)
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tag := language.Make(lang)
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if tag == language.Und {
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name = artificialLangTagPrefix + name
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}
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_, err = bundle.ParseMessageFileBytes(b, name)
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if err != nil {
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if strings.Contains(err.Error(), "no plural rule") {
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// https://github.com/gohugoio/hugo/issues/7798
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name = artificialLangTagPrefix + name
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_, err = bundle.ParseMessageFileBytes(b, name)
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if err == nil {
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return nil
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}
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}
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return errWithFileContext(_errors.Wrapf(err, "failed to load translations"), r)
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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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func errWithFileContext(inerr error, r source.File) error {
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fim, ok := r.FileInfo().(hugofs.FileMetaInfo)
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if !ok {
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return inerr
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}
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meta := fim.Meta()
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realFilename := meta.Filename
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f, err := meta.Open()
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if err != nil {
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return inerr
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}
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defer f.Close()
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err, _ = herrors.WithFileContext(
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inerr,
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realFilename,
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f,
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herrors.SimpleLineMatcher)
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return err
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}
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