mirror of https://github.com/gohugoio/hugo
173 lines
3.7 KiB
Go
173 lines
3.7 KiB
Go
// Copyright 2021 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 hugofs
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import (
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"io/fs"
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"os"
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"strings"
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"syscall"
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"time"
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"github.com/gohugoio/hugo/hugofs/glob"
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"github.com/spf13/afero"
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)
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var _ FilesystemUnwrapper = (*filenameFilterFs)(nil)
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func newFilenameFilterFs(fs afero.Fs, base string, filter *glob.FilenameFilter) afero.Fs {
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return &filenameFilterFs{
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fs: fs,
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base: base,
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filter: filter,
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}
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}
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// filenameFilterFs is a filesystem that filters by filename.
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type filenameFilterFs struct {
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base string
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fs afero.Fs
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filter *glob.FilenameFilter
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}
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func (fs *filenameFilterFs) UnwrapFilesystem() afero.Fs {
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return fs.fs
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}
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func (fs *filenameFilterFs) Open(name string) (afero.File, error) {
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fi, err := fs.fs.Stat(name)
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if err != nil {
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return nil, err
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}
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if !fs.filter.Match(name, fi.IsDir()) {
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return nil, os.ErrNotExist
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}
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f, err := fs.fs.Open(name)
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if err != nil {
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return nil, err
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}
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if !fi.IsDir() {
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return f, nil
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}
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return &filenameFilterDir{
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File: f,
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base: fs.base,
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filter: fs.filter,
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}, nil
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}
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func (fs *filenameFilterFs) OpenFile(name string, flag int, perm os.FileMode) (afero.File, error) {
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return fs.Open(name)
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}
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func (fs *filenameFilterFs) Stat(name string) (os.FileInfo, error) {
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fi, err := fs.fs.Stat(name)
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if err != nil {
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return nil, err
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}
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if !fs.filter.Match(name, fi.IsDir()) {
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return nil, os.ErrNotExist
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}
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return fi, nil
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}
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type filenameFilterDir struct {
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afero.File
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base string
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filter *glob.FilenameFilter
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}
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func (f *filenameFilterDir) ReadDir(n int) ([]fs.DirEntry, error) {
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des, err := f.File.(fs.ReadDirFile).ReadDir(n)
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if err != nil {
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return nil, err
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}
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i := 0
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for _, de := range des {
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fim := de.(FileMetaInfo)
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rel := strings.TrimPrefix(fim.Meta().Filename, f.base)
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if f.filter.Match(rel, de.IsDir()) {
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des[i] = de
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i++
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}
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}
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return des[:i], nil
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}
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func (f *filenameFilterDir) Readdir(count int) ([]os.FileInfo, error) {
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panic("not supported: Use ReadDir")
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}
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func (f *filenameFilterDir) Readdirnames(count int) ([]string, error) {
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des, err := f.ReadDir(count)
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if err != nil {
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return nil, err
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}
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dirs := make([]string, len(des))
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for i, d := range des {
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dirs[i] = d.Name()
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}
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return dirs, nil
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}
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func (fs *filenameFilterFs) Chmod(n string, m os.FileMode) error {
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return syscall.EPERM
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}
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func (fs *filenameFilterFs) Chtimes(n string, a, m time.Time) error {
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return syscall.EPERM
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}
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func (fs *filenameFilterFs) Chown(n string, uid, gid int) error {
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return syscall.EPERM
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}
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func (fs *filenameFilterFs) ReadDir(name string) ([]os.FileInfo, error) {
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panic("not implemented")
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}
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func (fs *filenameFilterFs) Remove(n string) error {
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return syscall.EPERM
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}
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func (fs *filenameFilterFs) RemoveAll(p string) error {
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return syscall.EPERM
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}
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func (fs *filenameFilterFs) Rename(o, n string) error {
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return syscall.EPERM
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}
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func (fs *filenameFilterFs) Create(n string) (afero.File, error) {
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return nil, syscall.EPERM
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}
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func (fs *filenameFilterFs) Name() string {
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return "FinameFilterFS"
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}
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func (fs *filenameFilterFs) Mkdir(n string, p os.FileMode) error {
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return syscall.EPERM
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}
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func (fs *filenameFilterFs) MkdirAll(n string, p os.FileMode) error {
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return syscall.EPERM
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}
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