mirror of https://github.com/gohugoio/hugo.git
380 lines
8.5 KiB
Go
380 lines
8.5 KiB
Go
// Copyright 2019 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 provides the file systems used by Hugo.
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package hugofs
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import (
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"os"
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"path/filepath"
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"runtime"
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"sort"
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"strings"
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"time"
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"github.com/gohugoio/hugo/hugofs/files"
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"golang.org/x/text/unicode/norm"
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"github.com/pkg/errors"
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"github.com/spf13/cast"
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"github.com/gohugoio/hugo/common/hreflect"
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"github.com/spf13/afero"
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)
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const (
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metaKeyFilename = "filename"
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metaKeyBaseDir = "baseDir" // Abs base directory of source file.
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metaKeyMountRoot = "mountRoot"
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metaKeyModule = "module"
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metaKeyOriginalFilename = "originalFilename"
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metaKeyName = "name"
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metaKeyPath = "path"
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metaKeyPathWalk = "pathWalk"
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metaKeyLang = "lang"
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metaKeyWeight = "weight"
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metaKeyOrdinal = "ordinal"
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metaKeyFs = "fs"
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metaKeyOpener = "opener"
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metaKeyIsOrdered = "isOrdered"
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metaKeyIsSymlink = "isSymlink"
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metaKeyJoinStat = "joinStat"
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metaKeySkipDir = "skipDir"
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metaKeyClassifier = "classifier"
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metaKeyTranslationBaseName = "translationBaseName"
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metaKeyTranslationBaseNameWithExt = "translationBaseNameWithExt"
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metaKeyTranslations = "translations"
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metaKeyDecoraterPath = "decoratorPath"
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)
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type FileMeta map[string]interface{}
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func (f FileMeta) GetInt(key string) int {
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return cast.ToInt(f[key])
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}
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func (f FileMeta) GetString(key string) string {
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return cast.ToString(f[key])
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}
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func (f FileMeta) GetBool(key string) bool {
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return cast.ToBool(f[key])
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}
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func (f FileMeta) Filename() string {
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return f.stringV(metaKeyFilename)
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}
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func (f FileMeta) OriginalFilename() string {
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return f.stringV(metaKeyOriginalFilename)
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}
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func (f FileMeta) SkipDir() bool {
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return f.GetBool(metaKeySkipDir)
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}
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func (f FileMeta) TranslationBaseName() string {
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return f.stringV(metaKeyTranslationBaseName)
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}
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func (f FileMeta) TranslationBaseNameWithExt() string {
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return f.stringV(metaKeyTranslationBaseNameWithExt)
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}
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func (f FileMeta) Translations() []string {
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return cast.ToStringSlice(f[metaKeyTranslations])
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}
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func (f FileMeta) Name() string {
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return f.stringV(metaKeyName)
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}
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func (f FileMeta) Classifier() files.ContentClass {
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c, found := f[metaKeyClassifier]
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if found {
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return c.(files.ContentClass)
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}
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return files.ContentClassFile // For sorting
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}
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func (f FileMeta) Lang() string {
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return f.stringV(metaKeyLang)
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}
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// Path returns the relative file path to where this file is mounted.
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func (f FileMeta) Path() string {
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return f.stringV(metaKeyPath)
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}
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// PathFile returns the relative file path for the file source.
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func (f FileMeta) PathFile() string {
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base := f.stringV(metaKeyBaseDir)
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if base == "" {
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return ""
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}
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return strings.TrimPrefix(strings.TrimPrefix(f.Filename(), base), filepathSeparator)
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}
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func (f FileMeta) MountRoot() string {
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return f.stringV(metaKeyMountRoot)
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}
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func (f FileMeta) Module() string {
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return f.stringV(metaKeyModule)
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}
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func (f FileMeta) Weight() int {
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return f.GetInt(metaKeyWeight)
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}
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func (f FileMeta) Ordinal() int {
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return f.GetInt(metaKeyOrdinal)
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}
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func (f FileMeta) IsOrdered() bool {
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return f.GetBool(metaKeyIsOrdered)
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}
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// IsSymlink returns whether this comes from a symlinked file or directory.
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func (f FileMeta) IsSymlink() bool {
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return f.GetBool(metaKeyIsSymlink)
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}
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func (f FileMeta) Watch() bool {
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if v, found := f["watch"]; found {
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return v.(bool)
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}
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return false
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}
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func (f FileMeta) Fs() afero.Fs {
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if v, found := f[metaKeyFs]; found {
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return v.(afero.Fs)
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}
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return nil
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}
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func (f FileMeta) GetOpener() func() (afero.File, error) {
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o, found := f[metaKeyOpener]
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if !found {
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return nil
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}
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return o.(func() (afero.File, error))
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}
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func (f FileMeta) Open() (afero.File, error) {
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v, found := f[metaKeyOpener]
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if !found {
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return nil, errors.New("file opener not found")
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}
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return v.(func() (afero.File, error))()
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}
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func (f FileMeta) JoinStat(name string) (FileMetaInfo, error) {
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v, found := f[metaKeyJoinStat]
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if !found {
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return nil, os.ErrNotExist
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}
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return v.(func(name string) (FileMetaInfo, error))(name)
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}
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func (f FileMeta) stringV(key string) string {
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if v, found := f[key]; found {
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return v.(string)
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}
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return ""
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}
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func (f FileMeta) setIfNotZero(key string, val interface{}) {
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if !hreflect.IsTruthful(val) {
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return
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}
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f[key] = val
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}
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type FileMetaInfo interface {
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os.FileInfo
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Meta() FileMeta
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}
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type fileInfoMeta struct {
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os.FileInfo
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m FileMeta
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}
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// Name returns the file's name. Note that we follow symlinks,
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// if supported by the file system, and the Name given here will be the
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// name of the symlink, which is what Hugo needs in all situations.
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func (fi *fileInfoMeta) Name() string {
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if name := fi.m.Name(); name != "" {
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return name
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}
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return fi.FileInfo.Name()
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}
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func (fi *fileInfoMeta) Meta() FileMeta {
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return fi.m
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}
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func NewFileMetaInfo(fi os.FileInfo, m FileMeta) FileMetaInfo {
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if fim, ok := fi.(FileMetaInfo); ok {
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mergeFileMeta(fim.Meta(), m)
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}
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return &fileInfoMeta{FileInfo: fi, m: m}
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}
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func copyFileMeta(m FileMeta) FileMeta {
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c := make(FileMeta)
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for k, v := range m {
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c[k] = v
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}
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return c
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}
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// Merge metadata, last entry wins.
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func mergeFileMeta(from, to FileMeta) {
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if from == nil {
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return
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}
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for k, v := range from {
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if _, found := to[k]; !found {
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to[k] = v
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}
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}
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}
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type dirNameOnlyFileInfo struct {
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name string
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}
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func (fi *dirNameOnlyFileInfo) Name() string {
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return fi.name
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}
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func (fi *dirNameOnlyFileInfo) Size() int64 {
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panic("not implemented")
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}
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func (fi *dirNameOnlyFileInfo) Mode() os.FileMode {
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return os.ModeDir
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}
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func (fi *dirNameOnlyFileInfo) ModTime() time.Time {
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return time.Time{}
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}
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func (fi *dirNameOnlyFileInfo) IsDir() bool {
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return true
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}
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func (fi *dirNameOnlyFileInfo) Sys() interface{} {
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return nil
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}
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func newDirNameOnlyFileInfo(name string, meta FileMeta, fileOpener func() (afero.File, error)) FileMetaInfo {
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name = normalizeFilename(name)
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_, base := filepath.Split(name)
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m := copyFileMeta(meta)
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if _, found := m[metaKeyFilename]; !found {
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m.setIfNotZero(metaKeyFilename, name)
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}
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m[metaKeyOpener] = fileOpener
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m[metaKeyIsOrdered] = false
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return NewFileMetaInfo(
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&dirNameOnlyFileInfo{name: base},
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m,
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)
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}
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func decorateFileInfo(
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fi os.FileInfo,
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fs afero.Fs, opener func() (afero.File, error),
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filename, filepath string, inMeta FileMeta) FileMetaInfo {
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var meta FileMeta
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var fim FileMetaInfo
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filepath = strings.TrimPrefix(filepath, filepathSeparator)
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var ok bool
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if fim, ok = fi.(FileMetaInfo); ok {
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meta = fim.Meta()
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} else {
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meta = make(FileMeta)
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fim = NewFileMetaInfo(fi, meta)
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}
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meta.setIfNotZero(metaKeyOpener, opener)
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meta.setIfNotZero(metaKeyFs, fs)
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meta.setIfNotZero(metaKeyPath, normalizeFilename(filepath))
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meta.setIfNotZero(metaKeyFilename, normalizeFilename(filename))
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mergeFileMeta(inMeta, meta)
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return fim
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}
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func isSymlink(fi os.FileInfo) bool {
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return fi != nil && fi.Mode()&os.ModeSymlink == os.ModeSymlink
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}
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func fileInfosToFileMetaInfos(fis []os.FileInfo) []FileMetaInfo {
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fims := make([]FileMetaInfo, len(fis))
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for i, v := range fis {
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fims[i] = v.(FileMetaInfo)
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}
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return fims
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}
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func normalizeFilename(filename string) string {
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if filename == "" {
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return ""
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}
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if runtime.GOOS == "darwin" {
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// When a file system is HFS+, its filepath is in NFD form.
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return norm.NFC.String(filename)
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}
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return filename
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}
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func fileInfosToNames(fis []os.FileInfo) []string {
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names := make([]string, len(fis))
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for i, d := range fis {
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names[i] = d.Name()
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}
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return names
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}
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func fromSlash(filenames []string) []string {
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for i, name := range filenames {
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filenames[i] = filepath.FromSlash(name)
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}
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return filenames
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}
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func sortFileInfos(fis []os.FileInfo) {
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sort.Slice(fis, func(i, j int) bool {
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fimi, fimj := fis[i].(FileMetaInfo), fis[j].(FileMetaInfo)
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return fimi.Meta().Filename() < fimj.Meta().Filename()
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})
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}
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