Ftyjtk

I create a test1.zip file, in there is a 1.txt, I copy it and modify 1.txt to test2.zip, but the modified time of 1.txt can not be changed. Here is the test code:

package main

import (

    "archive/zip"

    "io/ioutil"

    "os"

    "time"

)



func main() {

    reader, _ := zip.OpenReader("test1.zip")

    dstFile, _ := os.Create("test2.zip")

    writer := zip.NewWriter(dstFile)

    defer reader.Close()

    defer writer.Close()



    for _, zipFile := range reader.Reader.File {

        if zipFile.Name == "1.txt" {

            fileHeader := &zipFile.FileHeader

            // this line can not modify the zip file time

            fileHeader.Modified = time.Now()

            entryWriter, err := writer.CreateHeader(fileHeader)

            if err != nil {

                panic(err.Error())

            }



            _, err = entryWriter.Write(byte("test2"))

            if err != nil {

                panic(err.Error())

            }

        } else {

            entryReader, _ := zipFile.Open()

            defer entryReader.Close()



            arByte, _ := ioutil.ReadAll(entryReader)

            entryWriter, _ := writer.CreateHeader(&zipFile.FileHeader)



            entryWriter.Write(arByte)

        }

    }

}

thanks for any help.