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// Copyright 2023 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 contains the types and functions related to source files.
package source
import (
"os"
"path/filepath"
"regexp"
"runtime"
"github.com/gohugoio/hugo/hugofs/glob"
"github.com/gohugoio/hugo/langs"
"github.com/spf13/afero"
"github.com/gohugoio/hugo/helpers"
"github.com/spf13/cast"
)
// SourceSpec abstracts language-specific file creation.
// TODO(bep) rename to Spec
type SourceSpec struct {
*helpers.PathSpec
SourceFs afero.Fs
shouldInclude func(filename string) bool
Languages map[string]any
DefaultContentLanguage string
DisabledLanguages map[string]bool
}
// NewSourceSpec initializes SourceSpec using languages the given filesystem and PathSpec.
func NewSourceSpec(ps *helpers.PathSpec, inclusionFilter *glob.FilenameFilter, fs afero.Fs) *SourceSpec {
cfg := ps.Cfg
defaultLang := cfg.GetString("defaultContentLanguage")
languages := cfg.GetStringMap("languages")
disabledLangsSet := make(map[string]bool)
for _, disabledLang := range cfg.GetStringSlice("disableLanguages") {
disabledLangsSet[disabledLang] = true
}
if len(languages) == 0 {
l := langs.NewDefaultLanguage(cfg)
languages[l.Lang] = l
defaultLang = l.Lang
}
ignoreFiles := cast.ToStringSlice(cfg.Get("ignoreFiles"))
var regexps []*regexp.Regexp
if len(ignoreFiles) > 0 {
for _, ignorePattern := range ignoreFiles {
re, err := regexp.Compile(ignorePattern)
if err != nil {
helpers.DistinctErrorLog.Printf("Invalid regexp %q in ignoreFiles: %s", ignorePattern, err)
} else {
regexps = append(regexps, re)
}
}
}
shouldInclude := func(filename string) bool {
if !inclusionFilter.Match(filename, false) {
return false
}
for _, r := range regexps {
if r.MatchString(filename) {
return false
}
}
return true
}
return &SourceSpec{shouldInclude: shouldInclude, PathSpec: ps, SourceFs: fs, Languages: languages, DefaultContentLanguage: defaultLang, DisabledLanguages: disabledLangsSet}
}
// IgnoreFile returns whether a given file should be ignored.
func (s *SourceSpec) IgnoreFile(filename string) bool {
if filename == "" {
if _, ok := s.SourceFs.(*afero.OsFs); ok {
return true
}
return false
}
base := filepath.Base(filename)
if len(base) > 0 {
first := base[0]
last := base[len(base)-1]
if first == '.' ||
first == '#' ||
last == '~' {
return true
}
}
if !s.shouldInclude(filename) {
return true
}
if runtime.GOOS == "windows" {
// Also check the forward slash variant if different.
unixFilename := filepath.ToSlash(filename)
if unixFilename != filename {
if !s.shouldInclude(unixFilename) {
return true
}
}
}
return false
}
// IsRegularSourceFile returns whether filename represents a regular file in the
// source filesystem.
func (s *SourceSpec) IsRegularSourceFile(filename string) (bool, error) {
fi, err := helpers.LstatIfPossible(s.SourceFs, filename)
if err != nil {
return false, err
}
if fi.IsDir() {
return false, nil
}
if fi.Mode()&os.ModeSymlink == os.ModeSymlink {
link, err := filepath.EvalSymlinks(filename)
if err != nil {
return false, err
}
fi, err = helpers.LstatIfPossible(s.SourceFs, link)
if err != nil {
return false, err
}
if fi.IsDir() {
return false, nil
}
}
return true, nil
}
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