package fs import ( "archive/zip" "io" "os" "strings" ) // ZipFiles compresses one or many files into a single zip archive file. // Param 1: filename is the output zip file's name. // Param 2: files is a list of files to add to the zip. func Zip(filename string, files []string) error { newZipFile, err := os.Create(filename) if err != nil { return err } defer newZipFile.Close() zipWriter := zip.NewWriter(newZipFile) defer zipWriter.Close() // Add files to zip for _, file := range files { if err = AddToZip(zipWriter, file); err != nil { return err } } return nil } func AddToZip(zipWriter *zip.Writer, filename string) error { fileToZip, err := os.Open(filename) if err != nil { return err } defer fileToZip.Close() // Get the file information info, err := fileToZip.Stat() if err != nil { return err } header, err := zip.FileInfoHeader(info) if err != nil { return err } // Change to deflate to gain better compression // see http://golang.org/pkg/archive/zip/#pkg-constants header.Method = zip.Deflate writer, err := zipWriter.CreateHeader(header) if err != nil { return err } _, err = io.Copy(writer, fileToZip) return err } // Extract Zip file in destination directory func Unzip(src, dest string) (fileNames []string, err error) { r, err := zip.OpenReader(src) if err != nil { return fileNames, err } defer r.Close() for _, f := range r.File { // Skip directories like __OSX if strings.HasPrefix(f.Name, "__") { continue } fn, err := copyToFile(f, dest) if err != nil { return fileNames, err } fileNames = append(fileNames, fn) } return fileNames, nil }