snapshot of https://github.com/ory/kratos.git (master, 2026-09-15; blobs > 131072B omitted)

oryx/fsx/dirhash.go

@@ -0,0 +1,34 @@
+// Copyright © 2026 Ory Corp
+// SPDX-License-Identifier: Apache-2.0
+
+package fsx
+
+import (
+	"crypto/sha512"
+	"io"
+	"io/fs"
+)
+
+// DirHash computes a directory hash from all files contained in any subdirectories.
+func DirHash(dir fs.FS) ([]byte, error) {
+	hash := sha512.New()
+	err := fs.WalkDir(dir, ".", func(path string, d fs.DirEntry, err error) error {
+		if err != nil {
+			return err
+		}
+		if d.IsDir() {
+			return nil
+		}
+		_, _ = io.WriteString(hash, path) // hash write never errors
+		f, err := dir.Open(path)
+		if err != nil {
+			return err
+		}
+		_, _ = io.Copy(hash, f) // hash write never errors
+		if err = f.Close(); err != nil {
+			return err
+		}
+		return nil
+	})
+	return hash.Sum(nil), err
+}