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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 (
"io"
"os"
"path/filepath"
"regexp"
"runtime"
"strings"
"github.com/spf13/cast"
"github.com/gohugoio/hugo/helpers"
jww "github.com/spf13/jwalterweatherman"
"golang.org/x/text/unicode/norm"
)
type Input interface {
Files() []*File
}
type Filesystem struct {
files []*File
Base string
AvoidPaths []string
SourceSpec
}
func (sp SourceSpec) NewFilesystem(base string, avoidPaths ...string) *Filesystem {
return &Filesystem{SourceSpec: sp, Base: base, AvoidPaths: avoidPaths}
}
func (f *Filesystem) FilesByExts(exts ...string) []*File {
var newFiles []*File
if len(exts) == 0 {
return f.Files()
}
for _, x := range f.Files() {
for _, e := range exts {
if x.Ext() == strings.TrimPrefix(e, ".") {
newFiles = append(newFiles, x)
}
}
}
return newFiles
}
func (f *Filesystem) Files() []*File {
if len(f.files) < 1 {
f.captureFiles()
}
return f.files
}
// add populates a file in the Filesystem.files
func (f *Filesystem) add(name string, reader io.Reader) (err error) {
var file *File
if runtime.GOOS == "darwin" {
// When a file system is HFS+, its filepath is in NFD form.
name = norm.NFC.String(name)
}
file, err = f.SourceSpec.NewFileFromAbs(f.Base, name, reader)
if err == nil {
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 {
rd, err := NewLazyFileReader(f.Fs.Source, filePath)
if err != nil {
return err
}
f.add(filePath, rd)
}
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(filePath string, fi os.FileInfo) (bool, error) {
if fi.Mode()&os.ModeSymlink == os.ModeSymlink {
link, err := filepath.EvalSymlinks(filePath)
if err != nil {
jww.ERROR.Printf("Cannot read symbolic link '%s', error was: %s", filePath, 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'", filePath)
}
return false, nil
}
if fi.IsDir() {
if f.avoid(filePath) || f.isNonProcessablePath(filePath) {
return false, filepath.SkipDir
}
return false, nil
}
if f.isNonProcessablePath(filePath) {
return false, nil
}
return true, nil
}
func (f *Filesystem) avoid(filePath string) bool {
for _, avoid := range f.AvoidPaths {
if avoid == filePath {
return true
}
}
return false
}
func (s SourceSpec) isNonProcessablePath(filePath string) bool {
base := filepath.Base(filePath)
if strings.HasPrefix(base, ".") ||
strings.HasPrefix(base, "#") ||
strings.HasSuffix(base, "~") {
return true
}
ignoreFiles := cast.ToStringSlice(s.Cfg.Get("ignoreFiles"))
if len(ignoreFiles) > 0 {
for _, ignorePattern := range ignoreFiles {
match, err := regexp.MatchString(ignorePattern, filePath)
if err != nil {
helpers.DistinctErrorLog.Printf("Invalid regexp '%s' in ignoreFiles: %s", ignorePattern, err)
return false
} else if match {
return true
}
}
}
return false
}
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