## 压缩zip
```go
func Zip(dest string, paths ...string) error {
zfile, err := os.Create(dest)
if err != nil {
return err
}
defer zfile.Close()
zipWriter := zip.NewWriter(zfile)
defer zipWriter.Close()
for _, src := range paths {
// remove the trailing path sepeartor if it is a directory
src := strings.TrimSuffix(src, string(os.PathSeparator))
err = filepath.Walk(src, func(path string, info os.FileInfo, err error) error {
if err != nil {
return err
}
// create local file header
header, err := zip.FileInfoHeader(info)
if err != nil {
return err
}
// set compression method to deflate
header.Method = zip.Deflate
// set relative path of file in zip archive
header.Name, err = filepath.Rel(filepath.Dir(src), path)
if err != nil {
return err
}
if info.IsDir() {
header.Name += string(os.PathSeparator)
}
// create writer for writing header
headerWriter, err := zipWriter.CreateHeader(header)
if err != nil {
return err
}
if info.IsDir() {
return nil
}
f, err := os.Open(path)
if err != nil {
return err
}
defer f.Close()
_, err = io.Copy(headerWriter, f)
return err
})
if err != nil {
return err
}
}
return nil
}
```
## 解压zip
```go
func Unzip(src string, dest string) error {
reader, err := zip.OpenReader(src)
if err != nil {
return err
}
defer reader.Close()
for _, file := range reader.File {
filePath := path.Join(dest, file.Name)
if file.FileInfo().IsDir() {
os.MkdirAll(filePath, os.ModePerm)
} else {
if err = os.MkdirAll(filepath.Dir(filePath), os.ModePerm); err != nil {
return err
}
inFile, err := file.Open()
if err != nil {
return err
}
defer inFile.Close()
outFile, err := os.OpenFile(filePath, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, file.Mode())
if err != nil {
return err
}
defer outFile.Close()
_, err = io.Copy(outFile, inFile)
if err != nil {
return err
}
}
}
return nil
}
```
## 工程源码
https://github.com/xbmlz/gct
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