4b793e5798
The directory structure:
a/
a
b/
b
With the glob pattern */a would previously return []string{"a"} for
dirs, but it needs to return []string{"a", "b"} in order to re-run
the generator if a file called "a" is created inside b/.
Rewrite Glob to manually recurse through path elements, only calling
filepath.Glob for a pattern with wilds in the last element of the
path, and add the globbed directory to the dirs list each time.
Also add tests and test data for pathtools.Glob.
Change-Id: Ibbdb2f99809ea0826d4fa82066cf84103005ef57
92 lines
2.5 KiB
Go
92 lines
2.5 KiB
Go
// Copyright 2014 Google Inc. 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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//
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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 pathtools
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import (
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"os"
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"path/filepath"
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"strings"
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)
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// Glob returns the list of files that match the given pattern along with the
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// list of directories that were searched to construct the file list.
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func Glob(pattern string) (matches, dirs []string, err error) {
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if !isWild(pattern) {
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// If there are no wilds in the pattern, just return whether the file at the pattern
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// exists or not. Uses filepath.Glob instead of manually statting to get consistent
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// results.
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matches, err = filepath.Glob(filepath.Clean(pattern))
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return matches, dirs, err
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}
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dir, file := saneSplit(pattern)
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dirMatches, dirs, err := Glob(dir)
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for _, m := range dirMatches {
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if info, _ := os.Stat(m); info.IsDir() {
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dirs = append(dirs, m)
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newMatches, err := filepath.Glob(filepath.Join(m, file))
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if err != nil {
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return nil, nil, err
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}
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matches = append(matches, newMatches...)
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}
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}
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return matches, dirs, nil
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}
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// Faster version of dir, file := filepath.Dir(path), filepath.File(path)
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// Similar to filepath.Split, but returns "." if dir is empty and trims trailing slash if dir is
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// not "/"
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func saneSplit(path string) (dir, file string) {
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dir, file = filepath.Split(path)
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switch dir {
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case "":
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dir = "."
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case "/":
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// Nothing
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default:
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dir = dir[:len(dir)-1]
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}
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return dir, file
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}
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func isWild(pattern string) bool {
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return strings.ContainsAny(pattern, "*?[")
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}
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func GlobPatternList(patterns []string, prefix string) (globedList []string, depDirs []string, err error) {
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var (
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matches []string
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deps []string
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)
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globedList = make([]string, 0)
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depDirs = make([]string, 0)
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for _, pattern := range patterns {
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if isWild(pattern) {
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matches, deps, err = Glob(filepath.Join(prefix, pattern))
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if err != nil {
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return nil, nil, err
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}
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globedList = append(globedList, matches...)
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depDirs = append(depDirs, deps...)
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} else {
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globedList = append(globedList, filepath.Join(prefix, pattern))
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}
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}
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return globedList, depDirs, nil
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}
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