2018-01-26 17:17:38 +08:00
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package ziptil
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import (
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"archive/zip"
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"io"
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"os"
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"path/filepath"
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"strings"
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)
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//解压zip文件
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//@param zipFile 需要解压的zip文件
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//@param dest 需要解压到的目录
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//@return err 返回错误
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func Unzip(zipFile, dest string) (err error) {
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dest = strings.TrimSuffix(dest, "/") + "/"
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// 打开一个zip格式文件
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r, err := zip.OpenReader(zipFile)
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if err != nil {
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return err
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}
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defer r.Close()
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// 迭代压缩文件中的文件,打印出文件中的内容
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for _, f := range r.File {
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if !f.FileInfo().IsDir() { //非目录,且不包含__MACOSX
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if folder := dest + filepath.Dir(f.Name); !strings.Contains(folder, "__MACOSX") {
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os.MkdirAll(folder, 0777)
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if fcreate, err := os.Create(dest + strings.TrimPrefix(f.Name, "./")); err == nil {
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if rc, err := f.Open(); err == nil {
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io.Copy(fcreate, rc)
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rc.Close() //不要用defer来关闭,如果文件太多的话,会报too many open files 的错误
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fcreate.Close()
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} else {
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fcreate.Close()
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return err
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}
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} else {
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return err
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}
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}
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}
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}
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return nil
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}
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2018-03-22 14:27:23 +08:00
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//压缩文件
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func Zip(source, target string) error {
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zipFile, err := os.Create(target)
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2018-01-26 17:17:38 +08:00
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if err != nil {
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return err
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}
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2018-03-22 14:27:23 +08:00
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defer zipFile.Close()
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archive := zip.NewWriter(zipFile)
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defer archive.Close()
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source = strings.Replace(source, "\\", "/", -1)
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filepath.Walk(source, func(path string, info os.FileInfo, err error) error {
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if err != nil {
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return err
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}
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path = strings.Replace(path, "\\", "/", -1)
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if path == source {
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return nil
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}
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header, err := zip.FileInfoHeader(info)
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if err != nil {
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return err
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}
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header.Name = strings.TrimPrefix(strings.TrimPrefix(strings.Replace(path, "\\", "/", -1), source), "/")
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if info.IsDir() {
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header.Name += "/"
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2018-01-26 17:17:38 +08:00
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} else {
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2018-03-22 14:27:23 +08:00
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header.Method = zip.Deflate
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}
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writer, err := archive.CreateHeader(header)
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if err != nil {
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2018-01-26 17:17:38 +08:00
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return err
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}
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2018-03-22 14:27:23 +08:00
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if info.IsDir() {
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return nil
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2018-01-26 17:17:38 +08:00
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}
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2018-03-22 14:27:23 +08:00
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file, err := os.Open(path)
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if err != nil {
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return err
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}
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defer file.Close()
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_, err = io.Copy(writer, file)
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return err
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})
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return err
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2018-01-26 17:17:38 +08:00
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}
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2018-03-12 18:24:58 +08:00
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2018-03-22 14:27:23 +08:00
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////压缩指定文件或文件夹
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////@param dest 压缩后的zip文件目标,如/usr/local/hello.zip
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////@param filepath 需要压缩的文件或者文件夹
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////@return err 错误。如果返回错误,则会删除dest文件
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//func Zip(dest string, filepath ...string) (err error) {
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// if len(filepath) == 0 {
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// return errors.New("lack of file")
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// }
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// //创建文件
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// fzip, err := os.Create(dest)
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// if err != nil {
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// return err
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// }
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// defer fzip.Close()
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//
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// var filelist []filetil.FileList
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// for _, file := range filepath {
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// if info, err := os.Stat(file); err == nil {
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// if info.IsDir() { //目录,则扫描文件
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// if f, _ := filetil.ScanFiles(file); len(f) > 0 {
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// filelist = append(filelist, f...)
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// }
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// } else { //文件
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// filelist = append(filelist, filetil.FileList{
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// IsDir: false,
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// Name: info.Name(),
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// Path: file,
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// })
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// }
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// } else {
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// return err
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// }
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// }
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// w := zip.NewWriter(fzip)
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// defer w.Close()
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// for _, file := range filelist {
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// if !file.IsDir {
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// if fw, err := w.Create(strings.TrimLeft(file.Path, "./")); err != nil {
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// return err
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// } else {
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// if fileContent, err := ioutil.ReadFile(file.Path); err != nil {
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// return err
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// } else {
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// if _, err = fw.Write(fileContent); err != nil {
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// return err
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// }
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// }
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// }
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// }
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// }
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// return
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//}
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func Compress(dst string, src string) (err error) {
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2018-03-12 18:24:58 +08:00
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d, _ := os.Create(dst)
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defer d.Close()
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w := zip.NewWriter(d)
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defer w.Close()
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2018-03-22 14:27:23 +08:00
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src = strings.Replace(src, "\\", "/", -1)
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2018-03-12 18:24:58 +08:00
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f, err := os.Open(src)
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if err != nil {
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return err
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}
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//prefix := src[strings.LastIndex(src,"/"):]
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err = compress(f, "", w)
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if err != nil {
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return err
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}
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return nil
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}
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func compress(file *os.File, prefix string, zw *zip.Writer) error {
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info, err := file.Stat()
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if err != nil {
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return err
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}
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if info.IsDir() {
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if prefix != "" {
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prefix = prefix + "/" + info.Name()
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2018-03-22 14:27:23 +08:00
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} else {
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2018-03-12 18:24:58 +08:00
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prefix = info.Name()
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}
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fileInfos, err := file.Readdir(-1)
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if err != nil {
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return err
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}
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for _, fi := range fileInfos {
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f, err := os.Open(file.Name() + "/" + fi.Name())
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if err != nil {
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return err
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}
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err = compress(f, prefix, zw)
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if err != nil {
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return err
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}
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}
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} else {
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header, err := zip.FileInfoHeader(info)
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if prefix != "" {
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header.Name = prefix + "/" + header.Name
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}
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if err != nil {
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return err
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}
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writer, err := zw.CreateHeader(header)
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if err != nil {
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return err
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}
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_, err = io.Copy(writer, file)
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file.Close()
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if err != nil {
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return err
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}
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}
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return nil
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}
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