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⭕ Go 语言常用工具库,这个轱辘还算圆! spread retract

https://ld246.com/tag/gulu

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zip.go 4.20 KB
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// Gulu - Golang common utilities for everyone.
// Copyright (c) 2019-present, b3log.org
//
// LianDi is licensed under Mulan PSL v2.
// You can use this software according to the terms and conditions of the Mulan PSL v2.
// You may obtain a copy of Mulan PSL v2 at:
// http://license.coscl.org.cn/MulanPSL2
// THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT, MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
// See the Mulan PSL v2 for more details.
package gulu
import (
"archive/zip"
"bytes"
"io"
"io/ioutil"
"os"
"path/filepath"
"unicode/utf8"
"golang.org/x/text/encoding/simplifiedchinese"
"golang.org/x/text/transform"
)
// ZipFile represents a zip file.
type ZipFile struct {
zipFile *os.File
writer *zip.Writer
}
// Create creates a zip file with the specified filename.
func (*GuluZip) Create(filename string) (*ZipFile, error) {
file, err := os.Create(filename)
if nil != err {
return nil, err
}
return &ZipFile{zipFile: file, writer: zip.NewWriter(file)}, nil
}
// Close closes the zip file writer.
func (z *ZipFile) Close() error {
err := z.writer.Close()
if nil != err {
return err
}
return z.zipFile.Close() // close the underlying writer
}
// AddEntryN adds entries.
func (z *ZipFile) AddEntryN(path string, names ...string) error {
for _, name := range names {
zipPath := filepath.Join(path, name)
err := z.AddEntry(zipPath, name)
if nil != err {
return err
}
}
return nil
}
// AddEntry adds a entry.
func (z *ZipFile) AddEntry(path, name string) error {
fi, err := os.Stat(name)
if nil != err {
return err
}
fh, err := zip.FileInfoHeader(fi)
if nil != err {
return err
}
fh.Name = filepath.ToSlash(filepath.Clean(path))
fh.Method = zip.Deflate // data compression algorithm
if fi.IsDir() {
fh.Name = fh.Name + "/" // be care the ending separator
}
entry, err := z.writer.CreateHeader(fh)
if nil != err {
return err
}
if fi.IsDir() {
return nil
}
file, err := os.Open(name)
if nil != err {
return err
}
defer file.Close()
_, err = io.Copy(entry, file)
return err
}
// AddDirectoryN adds directories.
func (z *ZipFile) AddDirectoryN(path string, names ...string) error {
for _, name := range names {
err := z.AddDirectory(path, name)
if nil != err {
return err
}
}
return nil
}
// AddDirectory adds a directory.
func (z *ZipFile) AddDirectory(path, dirName string) error {
files, err := ioutil.ReadDir(dirName)
if nil != err {
return err
}
if 0 == len(files) {
err := z.AddEntry(path, dirName)
if nil != err {
return err
}
return nil
}
for _, file := range files {
localPath := filepath.Join(dirName, file.Name())
zipPath := filepath.Join(path, file.Name())
err = nil
if file.IsDir() {
err = z.AddDirectory(zipPath, localPath)
} else {
err = z.AddEntry(zipPath, localPath)
}
if nil != err {
return err
}
}
return nil
}
func cloneZipItem(f *zip.File, dest string) error {
// create full directory path
fileName := f.Name
if !utf8.ValidString(fileName) {
data, err := ioutil.ReadAll(transform.NewReader(bytes.NewReader([]byte(fileName)), simplifiedchinese.GB18030.NewDecoder()))
if nil == err {
fileName = string(data)
} else {
logger.Error(err)
}
}
path := filepath.Join(dest, fileName)
err := os.MkdirAll(filepath.Dir(path), os.ModeDir|os.ModePerm)
if nil != err {
return err
}
if f.FileInfo().IsDir() {
err = os.Mkdir(path, os.ModeDir|os.ModePerm)
if nil != err {
return err
}
return nil
}
// clone if item is a file
rc, err := f.Open()
if nil != err {
return err
}
defer rc.Close()
// use os.Create() since Zip don't store file permissions
fileCopy, err := os.Create(path)
if nil != err {
return err
}
defer fileCopy.Close()
_, err = io.Copy(fileCopy, rc)
if nil != err {
return err
}
return nil
}
// Unzip extracts a zip file specified by the zipFilePath to the destination.
func (*GuluZip) Unzip(zipFilePath, destination string) error {
r, err := zip.OpenReader(zipFilePath)
if nil != err {
return err
}
defer r.Close()
for _, f := range r.File {
err = cloneZipItem(f, destination)
if nil != err {
return err
}
}
return nil
}
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https://gitee.com/dl88250/gulu.git
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gulu
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