golang zip 压缩，解压（含目录文件）
package ziptestimport (
"archive/zip"
"io"
"os"
"strings"
)
//压缩文件
//files 文件数组，可以是不同dir下的文件或者文件夹
//dest 压缩文件存放地址
func Compress(files []*os.File, dest string) error {
d, _ := os.Create(dest)
defer d.Close()
w := zip.NewWriter(d)
defer w.Close()
for _, file := range files {
err := compress(file, "", w)
if err != nil {
return err
}
}
return nil
}
func compress(file *os.File, prefix string, zw *zip.Writer) error {
info, err := file.Stat()
if err != nil {
return err
}
if info.IsDir() {
prefix = prefix + "/" + info.Name()
fileInfos, err := file.Readdir(-1)
if err != nil {
return err
}
for _, fi := range fileInfos {
f, err := os.Open(file.Name() + "/" + fi.Name())
if err != nil {
return err
}
err = compress(f, prefix, zw)
if err != nil {
return err
}
}
} else {
header, err := zip.FileInfoHeader(info)
header.Name = prefix + "/" + header.Name
if err != nil {
return err
}
writer, err := zw.CreateHeader(header)
if err != nil {
return err
}
_, err = io.Copy(writer, file)
file.Close()
if err != nil {
return err
}
}
return nil
}
//解压
func DeCompress(zipFile, dest string) error {
reader, err := zip.OpenReader(zipFile)
if err != nil {
return err
}
defer reader.Close()
for _, file := range reader.File {
rc, err := file.Open()
if err != nil {
return err
}
defer rc.Close()
filename := dest + file.Name
err = os.MkdirAll(getDir(filename), 0755)
if err != nil {
return err
}
w, err := os.Create(filename)
if err != nil {
return err
}
defer w.Close()
_, err = io.Copy(w, rc)
if err != nil {
return err
}
w.Close()
rc.Close()
}
return nil
}
func getDir(path string) string {
return subString(path, 0, strings.LastIndex(path, "/"))
}
func subString(str string, start, end int) string {
rs := []rune(str)
length := len(rs)
if start < 0 || start > length {
panic("start is wrong")
}
if end < start || end > length {
panic("end is wrong")
}
return string(rs)
}
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