/
uftzip.go
64 lines (59 loc) · 1.41 KB
/
uftzip.go
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package main
import (
"archive/zip"
"bytes"
"fmt"
"io"
"syscall/js"
"golang.org/x/text/encoding/simplifiedchinese"
"golang.org/x/text/transform"
)
func gbk2UtfZipJs(this js.Value, args []js.Value) interface{} {
if len(args) < 1 {
panic("len(args) < 1")
}
buffer := make([]byte, args[0].Length())
js.CopyBytesToGo(buffer, args[0])
b, err := gbk2UtfZip(buffer)
if err != nil {
return js.ValueOf(map[string]interface{}{"err": err.Error()})
}
var uint8Array = js.Global().Get("Uint8Array")
dst := uint8Array.New(len(b))
js.CopyBytesToJS(dst, b)
return dst
}
func gbk2UtfZip(b []byte) ([]byte, error) {
zipReader, err := zip.NewReader(bytes.NewReader(b), int64(len(b)))
if err != nil {
return nil, fmt.Errorf("gbk2UtfZip: %w", err)
}
rb := bytes.NewBuffer(nil)
zipWriter := zip.NewWriter(rb)
defer zipWriter.Close()
for _, f := range zipReader.File {
if !f.NonUTF8 {
zipWriter.Copy(f)
continue
}
s, err := gbkToUtf8([]byte(f.Name))
if err != nil {
return nil, fmt.Errorf("gbk2UtfZip: %w", err)
}
f.Name = string(s)
f.NonUTF8 = false
f.Flags = f.Flags | 2048
fmt.Println(f.Flags)
zipWriter.Copy(f)
}
zipWriter.Close()
return rb.Bytes(), nil
}
func gbkToUtf8(s []byte) ([]byte, error) {
reader := transform.NewReader(bytes.NewReader(s), simplifiedchinese.GBK.NewDecoder())
d, e := io.ReadAll(reader)
if e != nil {
return nil, fmt.Errorf("gbkToUtf8: %w", e)
}
return d, nil
}