f46e37f5f7
Fix issues caught by go vet. Test: m checkbuild Change-Id: Ib8d740457c15432dabe1575a6707726ddaf93084
127 lines
2.9 KiB
Go
127 lines
2.9 KiB
Go
// Copyright 2018 Google Inc. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package main
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import (
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"archive/zip"
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"flag"
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"fmt"
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"io"
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"io/ioutil"
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"log"
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"os"
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"path/filepath"
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"strings"
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)
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var (
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outputDir = flag.String("d", "", "output dir")
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outputFile = flag.String("l", "", "output list file")
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filter = flag.String("f", "", "optional filter pattern")
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)
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func must(err error) {
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if err != nil {
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log.Fatal(err)
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}
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}
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func writeFile(filename string, in io.Reader, perm os.FileMode) error {
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out, err := os.OpenFile(filename, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, perm)
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if err != nil {
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return err
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}
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_, err = io.Copy(out, in)
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if err != nil {
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out.Close()
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return err
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}
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return out.Close()
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}
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func main() {
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flag.Usage = func() {
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fmt.Fprintln(os.Stderr, "usage: zipsync -d <output dir> [-l <output file>] [-f <pattern>] [zip]...")
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flag.PrintDefaults()
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}
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flag.Parse()
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if *outputDir == "" {
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flag.Usage()
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os.Exit(1)
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}
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inputs := flag.Args()
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// For now, just wipe the output directory and replace its contents with the zip files
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// Eventually this could only modify the directory contents as necessary to bring it up
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// to date with the zip files.
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must(os.RemoveAll(*outputDir))
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must(os.MkdirAll(*outputDir, 0777))
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var files []string
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seen := make(map[string]string)
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for _, input := range inputs {
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reader, err := zip.OpenReader(input)
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if err != nil {
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log.Fatal(err)
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}
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defer reader.Close()
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for _, f := range reader.File {
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if *filter != "" {
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if match, err := filepath.Match(*filter, filepath.Base(f.Name)); err != nil {
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log.Fatal(err)
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} else if !match {
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continue
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}
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}
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if filepath.IsAbs(f.Name) {
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log.Fatalf("%q in %q is an absolute path", f.Name, input)
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}
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if prev, exists := seen[f.Name]; exists {
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log.Fatalf("%q found in both %q and %q", f.Name, prev, input)
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}
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seen[f.Name] = input
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filename := filepath.Join(*outputDir, f.Name)
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if f.FileInfo().IsDir() {
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must(os.MkdirAll(filename, f.FileInfo().Mode()))
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} else {
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must(os.MkdirAll(filepath.Dir(filename), 0777))
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in, err := f.Open()
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if err != nil {
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log.Fatal(err)
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}
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must(writeFile(filename, in, f.FileInfo().Mode()))
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in.Close()
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files = append(files, filename)
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}
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}
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}
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if *outputFile != "" {
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data := strings.Join(files, "\n")
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if len(files) > 0 {
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data += "\n"
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}
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must(ioutil.WriteFile(*outputFile, []byte(data), 0666))
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}
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}
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