1 files changed, 54 insertions, 0 deletions
diff --git a/crawl/crawl.go b/crawl/crawl.go
new file mode 100644
index 0000000..dac6b19
--- /dev/null
+++ b/crawl/crawl.go
@@ -0,0 +1,54 @@
+package crawl
+
+import (
+	"path"
+	"path/filepath"
+	"slices"
+	"strings"
+)
+
+func Evaluated(loc string) (string, error) {
+	return filepath.EvalSymlinks(loc)
+}
+
+func RichLocations(origin string) []string {
+	locs := Locations(origin)
+
+	eval, err := Evaluated(origin)
+	if err == nil && eval != origin {
+		i := 0
+		evaledLocations := Locations(eval)
+		var result []string
+		for i < len(locs) && i < len(evaledLocations) {
+			result = append(result, evaledLocations[i], locs[i])
+		}
+		result = slices.Compact(result)
+		return result
+	}
+	return locs
+}
+
+func Locations(origin string) []string {
+	origin = path.Clean(origin)
+	var locs = []string{
+		origin,
+	}
+	for {
+		previous := locs[len(locs)-1]
+		parent := ParentDir(previous)
+		if previous == parent {
+			break
+		}
+		locs = append(locs, parent)
+	}
+	return locs
+}
+
+func ParentDir(origin string) string {
+	trimmedOrigin := strings.TrimSuffix(origin, "/")
+	dir, _ := path.Split(trimmedOrigin)
+	if dir == "" {
+		return origin
+	}
+	return dir
+}