mirror of
https://github.com/go-gitea/gitea.git
synced 2024-08-25 13:47:26 +02:00
147 lines
3.8 KiB
Go
147 lines
3.8 KiB
Go
package vfsutil
|
|
|
|
import (
|
|
"io"
|
|
"net/http"
|
|
"os"
|
|
pathpkg "path"
|
|
"path/filepath"
|
|
"sort"
|
|
)
|
|
|
|
// Walk walks the filesystem rooted at root, calling walkFn for each file or
|
|
// directory in the filesystem, including root. All errors that arise visiting files
|
|
// and directories are filtered by walkFn. The files are walked in lexical
|
|
// order.
|
|
func Walk(fs http.FileSystem, root string, walkFn filepath.WalkFunc) error {
|
|
info, err := Stat(fs, root)
|
|
if err != nil {
|
|
return walkFn(root, nil, err)
|
|
}
|
|
return walk(fs, root, info, walkFn)
|
|
}
|
|
|
|
// readDirNames reads the directory named by dirname and returns
|
|
// a sorted list of directory entries.
|
|
func readDirNames(fs http.FileSystem, dirname string) ([]string, error) {
|
|
fis, err := ReadDir(fs, dirname)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
names := make([]string, len(fis))
|
|
for i := range fis {
|
|
names[i] = fis[i].Name()
|
|
}
|
|
sort.Strings(names)
|
|
return names, nil
|
|
}
|
|
|
|
// walk recursively descends path, calling walkFn.
|
|
func walk(fs http.FileSystem, path string, info os.FileInfo, walkFn filepath.WalkFunc) error {
|
|
err := walkFn(path, info, nil)
|
|
if err != nil {
|
|
if info.IsDir() && err == filepath.SkipDir {
|
|
return nil
|
|
}
|
|
return err
|
|
}
|
|
|
|
if !info.IsDir() {
|
|
return nil
|
|
}
|
|
|
|
names, err := readDirNames(fs, path)
|
|
if err != nil {
|
|
return walkFn(path, info, err)
|
|
}
|
|
|
|
for _, name := range names {
|
|
filename := pathpkg.Join(path, name)
|
|
fileInfo, err := Stat(fs, filename)
|
|
if err != nil {
|
|
if err := walkFn(filename, fileInfo, err); err != nil && err != filepath.SkipDir {
|
|
return err
|
|
}
|
|
} else {
|
|
err = walk(fs, filename, fileInfo, walkFn)
|
|
if err != nil {
|
|
if !fileInfo.IsDir() || err != filepath.SkipDir {
|
|
return err
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// WalkFilesFunc is the type of the function called for each file or directory visited by WalkFiles.
|
|
// It's like filepath.WalkFunc, except it provides an additional ReadSeeker parameter for file being visited.
|
|
type WalkFilesFunc func(path string, info os.FileInfo, rs io.ReadSeeker, err error) error
|
|
|
|
// WalkFiles walks the filesystem rooted at root, calling walkFn for each file or
|
|
// directory in the filesystem, including root. In addition to FileInfo, it passes an
|
|
// ReadSeeker to walkFn for each file it visits.
|
|
func WalkFiles(fs http.FileSystem, root string, walkFn WalkFilesFunc) error {
|
|
file, info, err := openStat(fs, root)
|
|
if err != nil {
|
|
return walkFn(root, nil, nil, err)
|
|
}
|
|
return walkFiles(fs, root, info, file, walkFn)
|
|
}
|
|
|
|
// walkFiles recursively descends path, calling walkFn.
|
|
// It closes the input file after it's done with it, so the caller shouldn't.
|
|
func walkFiles(fs http.FileSystem, path string, info os.FileInfo, file http.File, walkFn WalkFilesFunc) error {
|
|
err := walkFn(path, info, file, nil)
|
|
file.Close()
|
|
if err != nil {
|
|
if info.IsDir() && err == filepath.SkipDir {
|
|
return nil
|
|
}
|
|
return err
|
|
}
|
|
|
|
if !info.IsDir() {
|
|
return nil
|
|
}
|
|
|
|
names, err := readDirNames(fs, path)
|
|
if err != nil {
|
|
return walkFn(path, info, nil, err)
|
|
}
|
|
|
|
for _, name := range names {
|
|
filename := pathpkg.Join(path, name)
|
|
file, fileInfo, err := openStat(fs, filename)
|
|
if err != nil {
|
|
if err := walkFn(filename, nil, nil, err); err != nil && err != filepath.SkipDir {
|
|
return err
|
|
}
|
|
} else {
|
|
err = walkFiles(fs, filename, fileInfo, file, walkFn)
|
|
// file is closed by walkFiles, so we don't need to close it here.
|
|
if err != nil {
|
|
if !fileInfo.IsDir() || err != filepath.SkipDir {
|
|
return err
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// openStat performs Open and Stat and returns results, or first error encountered.
|
|
// The caller is responsible for closing the returned file when done.
|
|
func openStat(fs http.FileSystem, name string) (http.File, os.FileInfo, error) {
|
|
f, err := fs.Open(name)
|
|
if err != nil {
|
|
return nil, nil, err
|
|
}
|
|
fi, err := f.Stat()
|
|
if err != nil {
|
|
f.Close()
|
|
return nil, nil, err
|
|
}
|
|
return f, fi, nil
|
|
}
|