mirror of
https://github.com/gohugoio/hugo.git
synced 2024-11-29 00:02:08 -05:00
74 lines
2.2 KiB
Go
74 lines
2.2 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 (
|
|
"os"
|
|
|
|
"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, overlay afero.Fs) afero.Fs {
|
|
return &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
|
|
}
|
|
|
|
// LanguageDirsMerger implements the afero.DirsMerger interface, which is used
|
|
// to merge two directories.
|
|
var LanguageDirsMerger = func(lofi, bofi []os.FileInfo) ([]os.FileInfo, error) {
|
|
for _, fi1 := range bofi {
|
|
fim1 := fi1.(FileMetaInfo)
|
|
var found bool
|
|
for _, fi2 := range lofi {
|
|
fim2 := fi2.(FileMetaInfo)
|
|
if fi1.Name() == fi2.Name() && fim1.Meta().Lang == fim2.Meta().Lang {
|
|
found = true
|
|
break
|
|
}
|
|
}
|
|
if !found {
|
|
lofi = append(lofi, fi1)
|
|
}
|
|
}
|
|
|
|
return lofi, nil
|
|
}
|