Get executable mod time

Author: lunny

modules/public/static.go

@@ -18,8 +18,10 @@ import (
 	"time"
 
 	"code.gitea.io/gitea/modules/log"
+	"code.gitea.io/gitea/modules/util"
 )
 
+// GlobalModTime provide a gloabl mod time for embedded asset files
 func GlobalModTime(filename string) time.Time {
 	t, err := util.GetExecutableModTime()
 	if err != nil {

modules/templates/static.go

@@ -27,6 +27,7 @@ var (
 	bodyTemplates    = template.New("")
 )
 
+// GlobalModTime provide a gloabl mod time for embedded asset files
 func GlobalModTime(filename string) time.Time {
 	t, err := util.GetExecutableModTime()
 	if err != nil {

modules/util/executable.go

@@ -0,0 +1,36 @@
+// Copyright 2022 The Gitea Authors. All rights reserved.
+// Use of this source code is governed by a MIT-style
+// license that can be found in the LICENSE file.
+
+package util
+
+import (
+	"os"
+	"path/filepath"
+	"time"
+)
+
+// GetExecutableModTime get executable file modified time of current process.
+func GetExecutableModTime() (time.Time, error) {
+	exePath, err := os.Executable()
+	if err != nil {
+		return time.Time{}, err
+	}
+
+	exePath, err = filepath.Abs(exePath)
+	if err != nil {
+		return time.Time{}, err
+	}
+
+	exePath, err = filepath.EvalSymlinks(exePath)
+	if err != nil {
+		return time.Time{}, err
+	}
+
+	st, err := os.Stat(exePath)
+	if err != nil {
+		return time.Time{}, err
+	}
+
+	return st.ModTime(), nil
+}