123 lines
2.5 KiB
Go
123 lines
2.5 KiB
Go
// Copyright 2016 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 source
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import (
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"path/filepath"
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"sync"
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"github.com/pkg/errors"
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"github.com/gohugoio/hugo/hugofs"
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)
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// Filesystem represents a source filesystem.
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type Filesystem struct {
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files []File
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filesInit sync.Once
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filesInitErr error
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Base string
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fi hugofs.FileMetaInfo
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SourceSpec
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}
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// NewFilesystem returns a new filesytem for a given source spec.
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func (sp SourceSpec) NewFilesystem(base string) *Filesystem {
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return &Filesystem{SourceSpec: sp, Base: base}
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}
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func (sp SourceSpec) NewFilesystemFromFileMetaInfo(fi hugofs.FileMetaInfo) *Filesystem {
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return &Filesystem{SourceSpec: sp, fi: fi}
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}
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// Files returns a slice of readable files.
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func (f *Filesystem) Files() ([]File, error) {
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f.filesInit.Do(func() {
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err := f.captureFiles()
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if err != nil {
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f.filesInitErr = errors.Wrap(err, "capture files")
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}
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})
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return f.files, f.filesInitErr
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}
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// add populates a file in the Filesystem.files
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func (f *Filesystem) add(name string, fi hugofs.FileMetaInfo) (err error) {
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var file File
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file, err = f.SourceSpec.NewFileInfo(fi)
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if err != nil {
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return err
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}
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f.files = append(f.files, file)
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return err
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}
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func (f *Filesystem) captureFiles() error {
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walker := func(path string, fi hugofs.FileMetaInfo, err error) error {
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if err != nil {
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return err
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}
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if fi.IsDir() {
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return nil
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}
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meta := fi.Meta()
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filename := meta.Filename
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b, err := f.shouldRead(filename, fi)
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if err != nil {
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return err
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}
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if b {
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err = f.add(filename, fi)
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}
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return err
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}
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w := hugofs.NewWalkway(hugofs.WalkwayConfig{
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Fs: f.SourceFs,
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Info: f.fi,
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Root: f.Base,
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WalkFn: walker,
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})
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return w.Walk()
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}
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func (f *Filesystem) shouldRead(filename string, fi hugofs.FileMetaInfo) (bool, error) {
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ignore := f.SourceSpec.IgnoreFile(fi.Meta().Filename)
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if fi.IsDir() {
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if ignore {
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return false, filepath.SkipDir
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}
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return false, nil
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}
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if ignore {
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return false, nil
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}
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return true, nil
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}
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