1 files changed, 92 insertions, 0 deletions
diff --git a/build/generate-bindata.go b/build/generate-bindata.go
new file mode 100644
index 0000000..2fcb7c2
--- /dev/null
+++ b/build/generate-bindata.go
@@ -0,0 +1,92 @@
+// Copyright 2020 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+//go:build ignore
+
+package main
+
+import (
+	"bytes"
+	"crypto/sha1"
+	"fmt"
+	"log"
+	"net/http"
+	"os"
+	"path/filepath"
+	"strconv"
+
+	"github.com/shurcooL/vfsgen"
+)
+
+func needsUpdate(dir, filename string) (bool, []byte) {
+	needRegen := false
+	_, err := os.Stat(filename)
+	if err != nil {
+		needRegen = true
+	}
+
+	oldHash, err := os.ReadFile(filename + ".hash")
+	if err != nil {
+		oldHash = []byte{}
+	}
+
+	hasher := sha1.New()
+
+	err = filepath.WalkDir(dir, func(path string, d os.DirEntry, err error) error {
+		if err != nil {
+			return err
+		}
+		info, err := d.Info()
+		if err != nil {
+			return err
+		}
+		_, _ = hasher.Write([]byte(d.Name()))
+		_, _ = hasher.Write([]byte(info.ModTime().String()))
+		_, _ = hasher.Write([]byte(strconv.FormatInt(info.Size(), 16)))
+		return nil
+	})
+	if err != nil {
+		return true, oldHash
+	}
+
+	newHash := hasher.Sum([]byte{})
+
+	if bytes.Compare(oldHash, newHash) != 0 {
+		return true, newHash
+	}
+
+	return needRegen, newHash
+}
+
+func main() {
+	if len(os.Args) < 4 {
+		log.Fatal("Insufficient number of arguments. Need: directory packageName filename")
+	}
+
+	dir, packageName, filename := os.Args[1], os.Args[2], os.Args[3]
+	var useGlobalModTime bool
+	if len(os.Args) == 5 {
+		useGlobalModTime, _ = strconv.ParseBool(os.Args[4])
+	}
+
+	update, newHash := needsUpdate(dir, filename)
+
+	if !update {
+		fmt.Printf("bindata for %s already up-to-date\n", packageName)
+		return
+	}
+
+	fmt.Printf("generating bindata for %s\n", packageName)
+	var fsTemplates http.FileSystem = http.Dir(dir)
+	err := vfsgen.Generate(fsTemplates, vfsgen.Options{
+		PackageName:      packageName,
+		BuildTags:        "bindata",
+		VariableName:     "Assets",
+		Filename:         filename,
+		UseGlobalModTime: useGlobalModTime,
+	})
+	if err != nil {
+		log.Fatalf("%v\n", err)
+	}
+	_ = os.WriteFile(filename+".hash", newHash, 0o666)
+}