ICSharpCode.SharpZipLib.Zip.FastZip not zipping files having special characters in their file names

Question

I am using ICSharpCode.SharpZipLib.Zip.FastZip to zip files but I'm stuck on a problem:

When I try to zip a file with special characters in its file name, it does not work. It works when there are no special characters in the file name.

Timotheus

When you say it doesn't work, what doesn't work? Can you please post your code and the error message you are getting? – Henrietta

It not zip that file, also I am not getting any error – Timotheus

does it work without the special characters? – Christiechristin

What special character? Can you give an example? – Hen

HI-ASCII characters example €...I dnt think you guys dnt know what means special characters :( – Timotheus

@BreakHead: that's not a special character to me. It's a non-ASCII character. – Gamb

It's a feature, not a bug. – Dietitian

Answer 1

I think you cannot use FastZip. You need to iterate the files and add the entries yourself specifying:

entry.IsUnicodeText = true;

To tell SharpZipLib the entry is unicode.

string[] filenames = Directory.GetFiles(sTargetFolderPath);

// Zip up the files - From SharpZipLib Demo Code
using (ZipOutputStream s = new
    ZipOutputStream(File.Create("MyZipFile.zip")))
{
    s.SetLevel(9); // 0-9, 9 being the highest compression

    byte[] buffer = new byte[4096];

    foreach (string file in filenames)
    {
         ZipEntry entry = new ZipEntry(Path.GetFileName(file));

         entry.DateTime = DateTime.Now;
         entry.IsUnicodeText = true;
         s.PutNextEntry(entry);

         using (FileStream fs = File.OpenRead(file))
         {
             int sourceBytes;
             do
             {
                 sourceBytes = fs.Read(buffer, 0, buffer.Length);

                 s.Write(buffer, 0, sourceBytes);

             } while (sourceBytes > 0);
         }
    }
    s.Finish();
    s.Close();
 }

Giliane

+1000, Ey vaaaal, It is too great. It is exactly what i want. Thanks a lot. – Bellebelleek

@Bellebelleek if one of the answers has actually solved your problem you have to mark it as accepted. For instance I posted the same solution as Paaland (just scroll up), except I was faster :) – Columbic

How is Dec 20th 2012 earlier than Mar 26th 2011? And why reopen this ancient post? – Giliane

Answer 2

You can continue using FastZip if you would like, but you need to give it a ZipEntryFactory that creates ZipEntrys with IsUnicodeText = true.

var zfe = new ZipEntryFactory { IsUnicodeText = true };
var fz = new FastZip { EntryFactory = zfe };
fz.CreateZip("out.zip", "C:\in", true, null);

Nyasaland

This is a fully working solution, no need to hack around with manual zip entries :) – Hume

Answer 3

You have to download and compile the latest version of SharpZipLib library so you can use

entry.IsUnicodeText = true;

here is your snippet (slightly modified):

FileInfo file = new FileInfo("input.ext");
using(var sw = new FileStream("output.zip", FileMode.OpenOrCreate, FileAccess.ReadWrite))
{
    using(var zipStream = new ZipOutputStream(sw))
    {
        var entry = new ZipEntry(file.Name);
        entry.IsUnicodeText = true;
        zipStream.PutNextEntry(entry);

        using (var reader = new FileStream(file.FullName, FileMode.Open, FileAccess.Read, FileShare.ReadWrite))
        {
            byte[] buffer = new byte[4096];
            int bytesRead;
            while ((bytesRead = reader.Read(buffer, 0, buffer.Length)) > 0)
            {
                byte[] actual = new byte[bytesRead];
                Buffer.BlockCopy(buffer, 0, actual, 0, bytesRead);
                zipStream.Write(actual, 0, actual.Length);
            }
        }
    }
}

Columbic

Answer 4

Possibility 1: you are passing a filename to the regex file filter.

Possibility 2: those characters are not allowed in zip files (or at least SharpZipLib thinks so)

Fillin

Answer 5

try to take out the special character from the file name, i,e replace it. your Filename.Replace("&", "&");

Straightforward