mirror of
https://github.com/Luzifer/ansible-role-version.git
synced 2024-12-24 19:41:20 +00:00
111 lines
2.5 KiB
Go
111 lines
2.5 KiB
Go
package util
|
|
|
|
import (
|
|
"path/filepath"
|
|
"sort"
|
|
"strings"
|
|
|
|
"gopkg.in/src-d/go-billy.v4"
|
|
)
|
|
|
|
// Glob returns the names of all files matching pattern or nil
|
|
// if there is no matching file. The syntax of patterns is the same
|
|
// as in Match. The pattern may describe hierarchical names such as
|
|
// /usr/*/bin/ed (assuming the Separator is '/').
|
|
//
|
|
// Glob ignores file system errors such as I/O errors reading directories.
|
|
// The only possible returned error is ErrBadPattern, when pattern
|
|
// is malformed.
|
|
//
|
|
// Function originally from https://golang.org/src/path/filepath/match_test.go
|
|
func Glob(fs billy.Filesystem, pattern string) (matches []string, err error) {
|
|
if !hasMeta(pattern) {
|
|
if _, err = fs.Lstat(pattern); err != nil {
|
|
return nil, nil
|
|
}
|
|
return []string{pattern}, nil
|
|
}
|
|
|
|
dir, file := filepath.Split(pattern)
|
|
// Prevent infinite recursion. See issue 15879.
|
|
if dir == pattern {
|
|
return nil, filepath.ErrBadPattern
|
|
}
|
|
|
|
var m []string
|
|
m, err = Glob(fs, cleanGlobPath(dir))
|
|
if err != nil {
|
|
return
|
|
}
|
|
for _, d := range m {
|
|
matches, err = glob(fs, d, file, matches)
|
|
if err != nil {
|
|
return
|
|
}
|
|
}
|
|
return
|
|
}
|
|
|
|
// cleanGlobPath prepares path for glob matching.
|
|
func cleanGlobPath(path string) string {
|
|
switch path {
|
|
case "":
|
|
return "."
|
|
case string(filepath.Separator):
|
|
// do nothing to the path
|
|
return path
|
|
default:
|
|
return path[0 : len(path)-1] // chop off trailing separator
|
|
}
|
|
}
|
|
|
|
// glob searches for files matching pattern in the directory dir
|
|
// and appends them to matches. If the directory cannot be
|
|
// opened, it returns the existing matches. New matches are
|
|
// added in lexicographical order.
|
|
func glob(fs billy.Filesystem, dir, pattern string, matches []string) (m []string, e error) {
|
|
m = matches
|
|
fi, err := fs.Stat(dir)
|
|
if err != nil {
|
|
return
|
|
}
|
|
|
|
if !fi.IsDir() {
|
|
return
|
|
}
|
|
|
|
names, _ := readdirnames(fs, dir)
|
|
sort.Strings(names)
|
|
|
|
for _, n := range names {
|
|
matched, err := filepath.Match(pattern, n)
|
|
if err != nil {
|
|
return m, err
|
|
}
|
|
if matched {
|
|
m = append(m, filepath.Join(dir, n))
|
|
}
|
|
}
|
|
return
|
|
}
|
|
|
|
// hasMeta reports whether path contains any of the magic characters
|
|
// recognized by Match.
|
|
func hasMeta(path string) bool {
|
|
// TODO(niemeyer): Should other magic characters be added here?
|
|
return strings.ContainsAny(path, "*?[")
|
|
}
|
|
|
|
func readdirnames(fs billy.Filesystem, dir string) ([]string, error) {
|
|
files, err := fs.ReadDir(dir)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
var names []string
|
|
for _, file := range files {
|
|
names = append(names, file.Name())
|
|
}
|
|
|
|
return names, nil
|
|
}
|