/
gres_func_zip.go
158 lines (151 loc) · 4.04 KB
/
gres_func_zip.go
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// Copyright GoFrame Author(https://goframe.org). All Rights Reserved.
//
// This Source Code Form is subject to the terms of the MIT License.
// If a copy of the MIT was not distributed with this file,
// You can obtain one at https://github.com/gogf/gf.
package gres
import (
"archive/zip"
"context"
"github.com/gogf/gf/internal/fileinfo"
"github.com/gogf/gf/internal/intlog"
"github.com/gogf/gf/os/gfile"
"github.com/gogf/gf/text/gregex"
"io"
"os"
"strings"
"time"
)
// ZipPathWriter compresses <paths> to <writer> using zip compressing algorithm.
// The unnecessary parameter <prefix> indicates the path prefix for zip file.
//
// Note that the parameter <paths> can be either a directory or a file, which
// supports multiple paths join with ','.
func zipPathWriter(paths string, writer io.Writer, prefix ...string) error {
zipWriter := zip.NewWriter(writer)
defer zipWriter.Close()
for _, path := range strings.Split(paths, ",") {
path = strings.TrimSpace(path)
if err := doZipPathWriter(path, "", zipWriter, prefix...); err != nil {
return err
}
}
return nil
}
// doZipPathWriter compresses the file of given <path> and writes the content to <zipWriter>.
// The parameter <exclude> specifies the exclusive file path that is not compressed to <zipWriter>,
// commonly the destination zip file path.
// The unnecessary parameter <prefix> indicates the path prefix for zip file.
func doZipPathWriter(path string, exclude string, zipWriter *zip.Writer, prefix ...string) error {
var (
err error
files []string
)
path, err = gfile.Search(path)
if err != nil {
return err
}
if gfile.IsDir(path) {
files, err = gfile.ScanDir(path, "*", true)
if err != nil {
return err
}
} else {
files = []string{path}
}
headerPrefix := ""
if len(prefix) > 0 && prefix[0] != "" {
headerPrefix = prefix[0]
}
headerPrefix = strings.TrimRight(headerPrefix, `\/`)
if len(headerPrefix) > 0 && gfile.IsDir(path) {
headerPrefix += "/"
}
if headerPrefix == "" {
headerPrefix = gfile.Basename(path)
}
headerPrefix = strings.Replace(headerPrefix, `//`, `/`, -1)
for _, file := range files {
if exclude == file {
intlog.Printf(context.TODO(), `exclude file path: %s`, file)
continue
}
err = zipFile(file, headerPrefix+gfile.Dir(file[len(path):]), zipWriter)
if err != nil {
return err
}
}
// Add all directories to zip archive.
if headerPrefix != "" {
var name string
path = headerPrefix
for {
name = strings.Replace(gfile.Basename(path), `\`, `/`, -1)
err = zipFileVirtual(
fileinfo.New(name, 0, os.ModeDir|os.ModePerm, time.Now()), path, zipWriter,
)
if err != nil {
return err
}
if path == `/` || !strings.Contains(path, `/`) {
break
}
path = gfile.Dir(path)
}
}
return nil
}
// zipFile compresses the file of given <path> and writes the content to <zw>.
// The parameter <prefix> indicates the path prefix for zip file.
func zipFile(path string, prefix string, zw *zip.Writer) error {
prefix = strings.Replace(prefix, `//`, `/`, -1)
file, err := os.Open(path)
if err != nil {
return nil
}
defer file.Close()
info, err := file.Stat()
if err != nil {
return err
}
header, err := createFileHeader(info, prefix)
if err != nil {
return err
}
if !info.IsDir() {
header.Method = zip.Deflate
}
writer, err := zw.CreateHeader(header)
if err != nil {
return err
}
if !info.IsDir() {
if _, err = io.Copy(writer, file); err != nil {
return err
}
}
return nil
}
func zipFileVirtual(info os.FileInfo, path string, zw *zip.Writer) error {
header, err := createFileHeader(info, "")
if err != nil {
return err
}
header.Name = path
if _, err = zw.CreateHeader(header); err != nil {
return err
}
return nil
}
func createFileHeader(info os.FileInfo, prefix string) (*zip.FileHeader, error) {
header, err := zip.FileInfoHeader(info)
if err != nil {
return nil, err
}
if len(prefix) > 0 {
header.Name = prefix + `/` + header.Name
header.Name = strings.Replace(header.Name, `\`, `/`, -1)
header.Name, _ = gregex.ReplaceString(`/{2,}`, `/`, header.Name)
}
return header, nil
}