Closed
Description
Hi,
Context
I'm trying to generate a zip archive of huge files (something like 2GB each).
The generated zip archive can successfully be extracted using my Ubuntu unzip command.
But it raises an error when I try to extract using my graphical user interface or 7z.
Here is the output of 7z in test integrity mode:
$ 7z t archive.zip
7-Zip [64] 16.02 : Copyright (c) 1999-2016 Igor Pavlov : 2016-05-21
p7zip Version 16.02 (locale=en_US.UTF-8,Utf16=on,HugeFiles=on,64 bits,8 CPUs Intel(R) Core(TM) i7-8665U CPU @ 1.90GHz (806EC),ASM,AES-NI)
Scanning the drive for archives:
1 file, 4294967634 bytes (4097 MiB)
Testing archive: archive.zip
ERRORS:
Headers Error
--
Path = archive.zip
Type = zip
ERRORS:
Headers Error
Physical Size = 4294967634
64-bit = +
Archives with Errors: 1
Open Errors: 1
Since unzip is able to extract the files, I would say that the archive is valid.
But I definitely does not understand why 7z is complaining here.
I've absolutely no experience in ZIP / ZIP64 archives and I may be using your library in a wrong way...
How to reproduce
I've used the following code to :
package main
import (
"fmt"
"io"
"log"
"os"
"path/filepath"
"github.com/klauspost/compress/zip"
)
var (
// generated using "dd if=/dev/zero of=./file1 bs=1G count=2" or equivalent
fileNames = []string{
"./file1",
"./file2",
}
)
func main() {
outFileW, err := os.Create("./archive.zip")
if err != nil {
log.Fatal(err)
}
defer outFileW.Close()
zipWriter := zip.NewWriter(outFileW)
for _, filename := range fileNames {
fileToZip, err := os.Open(filename)
if err != nil {
log.Fatal(err)
}
defer fileToZip.Close()
// Get the file information
info, err := fileToZip.Stat()
if err != nil {
log.Fatal(err)
}
header, err := zip.FileInfoHeader(info)
if err != nil {
log.Fatal(err)
}
// Using FileInfoHeader() above only uses the basename of the file. If we want
// to preserve the folder structure we can overwrite this with the full path.
header.Name = filepath.Base(filename)
// Change to store to avoid compression
// see http://golang.org/pkg/archive/zip/#pkg-constants
header.Method = zip.Store
writer, err := zipWriter.CreateHeader(header)
if err != nil {
log.Fatal(err)
}
_, err = io.Copy(writer, fileToZip)
if err != nil {
log.Fatal(err)
}
}
if err := zipWriter.Close(); err != nil {
log.Fatal(err)
}
fmt.Println("archive.zip file created")
}using
go 1.18.3github.jpy.wang/klauspost/compress v1.15.6
Test files are filled with zero and created using a command such as dd if=/dev/zero of=./file1 bs=1G count=2
Thanks in advance for your time and consideration
Metadata
Metadata
Assignees
Labels
No labels