hugo/hugofs/language_composite_fs.go
Bjørn Erik Pedersen eb42774e58
Add support for a content dir set per language
A sample config:

```toml
defaultContentLanguage = "en"
defaultContentLanguageInSubdir = true

[Languages]
[Languages.en]
weight = 10
title = "In English"
languageName = "English"
contentDir = "content/english"

[Languages.nn]
weight = 20
title = "På Norsk"
languageName = "Norsk"
contentDir = "content/norwegian"
```

The value of `contentDir` can be any valid path, even absolute path references. The only restriction is that the content dirs cannot overlap.

The content files will be assigned a language by

1. The placement: `content/norwegian/post/my-post.md` will be read as Norwegian content.
2. The filename: `content/english/post/my-post.nn.md` will be read as Norwegian even if it lives in the English content folder.

The content directories will be merged into a big virtual filesystem with one simple rule: The most specific language file will win.
This means that if both `content/norwegian/post/my-post.md` and `content/english/post/my-post.nn.md` exists, they will be considered duplicates and the version inside `content/norwegian` will win.

Note that translations will be automatically assigned by Hugo by the content file's relative placement, so `content/norwegian/post/my-post.md` will be a translation of `content/english/post/my-post.md`.

If this does not work for you, you can connect the translations together by setting a `translationKey` in the content files' front matter.

Fixes #4523
Fixes #4552
Fixes #4553
2018-04-02 08:06:21 +02:00

52 lines
1.7 KiB
Go

// Copyright 2018 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 hugofs
import (
"github.com/spf13/afero"
)
var (
_ afero.Fs = (*languageCompositeFs)(nil)
_ afero.Lstater = (*languageCompositeFs)(nil)
)
type languageCompositeFs struct {
*afero.CopyOnWriteFs
}
// NewLanguageCompositeFs creates a composite and language aware filesystem.
// This is a hybrid filesystem. To get a specific file in Open, Stat etc., use the full filename
// to the target filesystem. This information is available in Readdir, Stat etc. via the
// special LanguageFileInfo FileInfo implementation.
func NewLanguageCompositeFs(base afero.Fs, overlay *LanguageFs) afero.Fs {
return afero.NewReadOnlyFs(&languageCompositeFs{afero.NewCopyOnWriteFs(base, overlay).(*afero.CopyOnWriteFs)})
}
// Open takes the full path to the file in the target filesystem. If it is a directory, it gets merged
// using the language as a weight.
func (fs *languageCompositeFs) Open(name string) (afero.File, error) {
f, err := fs.CopyOnWriteFs.Open(name)
if err != nil {
return nil, err
}
fu, ok := f.(*afero.UnionFile)
if ok {
// This is a directory: Merge it.
fu.Merger = LanguageDirsMerger
}
return f, nil
}