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// Copyright 2016 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 source
import (
"os"
"path/filepath"
"runtime"
"sync"
"github.com/gohugoio/hugo/helpers"
jww "github.com/spf13/jwalterweatherman"
"golang.org/x/text/unicode/norm"
)
type Filesystem struct {
files []ReadableFile
filesInit sync.Once
Base string
SourceSpec
}
type Input interface {
Files() []ReadableFile
}
func (sp SourceSpec) NewFilesystem(base string) *Filesystem {
return &Filesystem{SourceSpec: sp, Base: base}
}
func (f *Filesystem) Files() []ReadableFile {
f.filesInit.Do(func() {
f.captureFiles()
})
return f.files
}
// add populates a file in the Filesystem.files
func (f *Filesystem) add(name string, fi os.FileInfo) (err error) {
var file ReadableFile
if runtime.GOOS == "darwin" {
// When a file system is HFS+, its filepath is in NFD form.
name = norm.NFC.String(name)
}
file = f.SourceSpec.NewFileInfo(f.Base, name, false, fi)
f.files = append(f.files, file)
return err
}
func (f *Filesystem) captureFiles() {
walker := func(filePath string, fi os.FileInfo, err error) error {
if err != nil {
return nil
}
b, err := f.shouldRead(filePath, fi)
if err != nil {
return err
}
if b {
f.add(filePath, fi)
}
return err
}
if f.Fs == nil {
panic("Must have a fs")
}
err := helpers.SymbolicWalk(f.Fs.Source, f.Base, walker)
if err != nil {
jww.ERROR.Println(err)
if err == helpers.ErrWalkRootTooShort {
panic("The root path is too short. If this is a test, make sure to init the content paths.")
}
}
}
func (f *Filesystem) shouldRead(filename string, fi os.FileInfo) (bool, error) {
if fi.Mode()&os.ModeSymlink == os.ModeSymlink {
link, err := filepath.EvalSymlinks(filename)
if err != nil {
jww.ERROR.Printf("Cannot read symbolic link '%s', error was: %s", filename, err)
return false, nil
}
linkfi, err := f.Fs.Source.Stat(link)
if err != nil {
jww.ERROR.Printf("Cannot stat '%s', error was: %s", link, err)
return false, nil
}
if !linkfi.Mode().IsRegular() {
jww.ERROR.Printf("Symbolic links for directories not supported, skipping '%s'", filename)
}
return false, nil
}
ignore := f.SourceSpec.IgnoreFile(filename)
if fi.IsDir() {
if ignore {
return false, filepath.SkipDir
}
return false, nil
}
if ignore {
return false, nil
}
return true, nil
}
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