3bf1a08505
This doesn't do any decompression / recompression, but just copies over the already compressed contents. So it's similar to zip -U, but allows rewriting of the paths. The first expected usecase is to replace img_from_target_files during the build, since it does the equivalent of this: zip2zip -i <target-files.zip> -o <img.zip> OTA/android-info.txt:android-info.txt IMAGES/*:. Except it decompresses and recompresses the images, which takes over a minute instead of a few seconds. Change-Id: I88d0df188635088783223873f78e193272dbdf1c
129 lines
3.0 KiB
Go
129 lines
3.0 KiB
Go
// Copyright 2016 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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"flag"
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"fmt"
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"os"
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"path/filepath"
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"strings"
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"android/soong/third_party/zip"
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)
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var (
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input = flag.String("i", "", "zip file to read from")
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output = flag.String("o", "", "output file")
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)
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func usage() {
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fmt.Fprintln(os.Stderr, "usage: zip2zip -i zipfile -o zipfile [filespec]...")
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flag.PrintDefaults()
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fmt.Fprintln(os.Stderr, " filespec:")
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fmt.Fprintln(os.Stderr, " <name>")
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fmt.Fprintln(os.Stderr, " <in_name>:<out_name>")
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fmt.Fprintln(os.Stderr, " <glob>:<out_dir>/")
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fmt.Fprintln(os.Stderr, "")
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fmt.Fprintln(os.Stderr, "Files will be copied with their existing compression from the input zipfile to")
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fmt.Fprintln(os.Stderr, "the output zipfile, in the order of filespec arguments")
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os.Exit(2)
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}
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func main() {
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flag.Parse()
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if flag.NArg() == 0 || *input == "" || *output == "" {
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usage()
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}
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reader, err := zip.OpenReader(*input)
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if err != nil {
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fmt.Fprintln(os.Stderr, err)
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os.Exit(3)
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}
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defer reader.Close()
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output, err := os.Create(*output)
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if err != nil {
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fmt.Fprintln(os.Stderr, err)
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os.Exit(4)
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}
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defer output.Close()
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writer := zip.NewWriter(output)
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defer func() {
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err := writer.Close()
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if err != nil {
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fmt.Fprintln(os.Stderr, err)
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os.Exit(5)
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}
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}()
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for _, arg := range flag.Args() {
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var input string
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var output string
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// Reserve escaping for future implementation, so make sure no
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// one is using \ and expecting a certain behavior.
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if strings.Contains(arg, "\\") {
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fmt.Fprintln(os.Stderr, "\\ characters are not currently supported")
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os.Exit(6)
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}
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args := strings.SplitN(arg, ":", 2)
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input = args[0]
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if len(args) == 2 {
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output = args[1]
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}
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if strings.IndexAny(input, "*?[") >= 0 {
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for _, file := range reader.File {
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if match, err := filepath.Match(input, file.Name); err != nil {
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fmt.Fprintln(os.Stderr, err)
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os.Exit(7)
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} else if match {
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var newFileName string
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if output == "" {
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newFileName = file.Name
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} else {
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_, name := filepath.Split(file.Name)
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newFileName = filepath.Join(output, name)
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}
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err = writer.CopyFrom(file, newFileName)
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if err != nil {
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fmt.Fprintln(os.Stderr, err)
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os.Exit(8)
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}
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}
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}
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} else {
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if output == "" {
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output = input
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}
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for _, file := range reader.File {
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if input == file.Name {
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err = writer.CopyFrom(file, output)
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if err != nil {
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fmt.Fprintln(os.Stderr, err)
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os.Exit(8)
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}
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break
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}
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}
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}
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}
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}
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