snapshot of https://github.com/go-gitea/gitea.git (main, 2026-09-15; blobs > 131072B omitted)

modules/avatar/hash.go

@@ -0,0 +1,20 @@
+// Copyright 2023 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package avatar
+
+import (
+	"crypto/sha256"
+	"encoding/hex"
+	"strconv"
+)
+
+// HashAvatar generates a unique string for input ID and data.
+// Because avatar is per-user, one user deletes their avatar should not affect another user who uses the same avatar.
+func HashAvatar(uniqueID int64, data []byte) string {
+	h := sha256.New()
+	h.Write([]byte(strconv.FormatInt(uniqueID, 10)))
+	h.Write([]byte{'-'}) // make sure the bytes in data won't conflict with ID
+	h.Write(data)
+	return hex.EncodeToString(h.Sum(nil))
+}