Function xzip

opensca/walk/zip.go:17–83

(ctx context.Context, filter ExtractFileFilter, input, output string)

)

func xzip(ctx context.Context, filter ExtractFileFilter, input, output string) bool {

	if !checkFileHead(input, M_ZIP) {
		return false
	}

	rf, err := zip.OpenReader(input)
	if err != nil {
		logs.Warn(err)
		return false
	}
	defer rf.Close()

	for _, f := range rf.File {

		select {
		case <-ctx.Done():
			return false
		default:
		}

		if f.FileInfo().IsDir() {
			continue
		}

		entryName := f.Name

		if f.Flags == 0 {
			gbk := mahonia.NewDecoder("gbk").ConvertString(f.Name)
			_, cdata, _ := mahonia.NewDecoder("utf-8").Translate([]byte(gbk), true)
			entryName = string(cdata)
		}

		fp, err := resolveExtractPath(output, entryName)
		if err != nil {
			logs.Warn(err)
			continue
		}

		if filter != nil && !filter(fp) {
			continue
		}

		fr, err := f.Open()
		if err != nil {
			logs.Warn(err)
			continue
		}

		os.MkdirAll(filepath.Dir(fp), 0777)
		fw, err := os.Create(fp)
		if err != nil {
			logs.Warn(err)
			fr.Close() // 提前退出时手动关闭
			continue
		}

		_, err = io.Copy(fw, fr)