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// Copyright 2020 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.
// +build ignore
package main
import (
"bytes"
"crypto/sha1"
"fmt"
"io/ioutil"
"log"
"net/http"
"os"
"path/filepath"
"strconv"
"github.com/shurcooL/vfsgen"
)
func needsUpdate(dir string, filename string) (bool, []byte) {
needRegen := false
_, err := os.Stat(filename)
if err != nil {
needRegen = true
}
oldHash, err := ioutil.ReadFile(filename + ".hash")
if err != nil {
oldHash = []byte{}
}
hasher := sha1.New()
err = filepath.Walk(dir, func(path string, info os.FileInfo, err error) error {
if err != nil {
return err
}
_, _ = hasher.Write([]byte(info.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]
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,
})
if err != nil {
log.Fatalf("%v\n", err)
}
_ = ioutil.WriteFile(filename+".hash", newHash, 0666)
}
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