Refactor sha1 and time-limited code (#31023) (#31030)

Backport #31023 by wxiaoguang

Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>

modules/git/utils.go

@@ -4,6 +4,8 @@
 package git
 
 import (
+	"crypto/sha1"
+	"encoding/hex"
 	"fmt"
 	"io"
 	"os"
@@ -128,3 +130,9 @@ func (l *LimitedReaderCloser) Read(p []byte) (n int, err error) {
 func (l *LimitedReaderCloser) Close() error {
 	return l.C.Close()
 }
+
+func HashFilePathForWebUI(s string) string {
+	h := sha1.New()
+	_, _ = h.Write([]byte(s))
+	return hex.EncodeToString(h.Sum(nil))
+}

modules/git/utils_test.go

@@ -0,0 +1,17 @@
+// Copyright 2024 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package git
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestHashFilePathForWebUI(t *testing.T) {
+	assert.Equal(t,
+		"8843d7f92416211de9ebb963ff4ce28125932878",
+		HashFilePathForWebUI("foobar"),
+	)
+}