git.iko.soy/crush
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feat(fsext): add function to search for something in parent directories
84bd324Andrey Nering
internal/fsext/parent.gonew file+43
compare with main
unifiedsplit
@@ -0,0 +1,43 @@
1+package fsext
2+
3+import (
4+ "errors"
5+ "os"
6+ "path/filepath"
7+)
8+
9+// SearchParent searches for a target file or directory starting from dir
10+// and walking up the directory tree until found or root or home is reached.
11+// Returns the full path to the target if found, empty string and false otherwise.
12+// The search includes the starting directory itself.
13+func SearchParent(dir, target string) (string, bool) {
14+ absDir, err := filepath.Abs(dir)
15+ if err != nil {
16+ return "", false
17+ }
18+
19+ path := filepath.Join(absDir, target)
20+ if _, err := os.Stat(path); err == nil {
21+ return path, true
22+ } else if !errors.Is(err, os.ErrNotExist) {
23+ return "", false
24+ }
25+
26+ previousParent := absDir
27+
28+ for {
29+ parent := filepath.Dir(previousParent)
30+ if parent == previousParent || parent == HomeDir() {
31+ return "", false
32+ }
33+
34+ path := filepath.Join(parent, target)
35+ if _, err := os.Stat(path); err == nil {
36+ return path, true
37+ } else if !errors.Is(err, os.ErrNotExist) {
38+ return "", false
39+ }
40+
41+ previousParent = parent
42+ }
43+}