Search results matching tag 'Xceed Zip'

Extracting a tar.gz file problems

Aaron — Wed, 06 Jun 2012 14:39:00 GMT

I have been trying to figure this out for a while now but cannot seem to figure it out. I keep getting a file system exception.

The exception is:

An unknown tar format was encountered.

Type: Xceed.GZip.GZippedFile

FullName: \SEARCH_JoeBlow_2010-11-09 22.23.09.001z.DITU-NOC.PKG.TAR

My code:

public override void ExtractTarGz(FileInfo searchFile, TransientFolder tempFolder)

{

var gzipFile = new DiskFile(searchFile.FullName);

if (!File.Exists(searchFile.FullName))

return;

AbstractFile tarFile = new GZippedFile(gzipFile);

AbstractFolder archive = new TarArchive(tarFile);

var destination = new DiskFolder(tempFolder.Folder.FullName);

destination.CopyTo(archive, true);

}

I am simply just trying to extract the gz file(searchfile) to the tempFolder. Any advice is much appreciated.

Estimate the expected compression rate

Jens — Thu, 15 Dec 2011 09:26:16 GMT

Hi,

we are currently testing the Xceed Ultimate Suite. In one of our projects, where we plan to use Xceed Zip, we have to estimate the expected compression rate of files and folders.

Is it possible to do such estimations with Xceed Zip without real compression of the files? If yes, which approach would you advise?

Best Regards,
Jens Horn

Re: Exception in Xceed.Zip.AesEncryptionStream.Dispose()

Bruce — Wed, 13 Apr 2011 15:41:50 GMT

Has this issue been found or resolved?

I have a zip file with a .pdf in it that will not unzip. I have tested it with WinZip 15.0, LZMa, and a encryption password. It works fine in WinZip 15.0.
I can unzip the file if no password, but once I have a password of any length then I get the exception.

The calculated authentication value does not match the reported value.
Type: Xceed.Zip.ZipArchive
FullName: \
   at Xceed.FileSystem.AbstractFolder.CopyFilesTo(FileSystemEvents events, Object userData, AbstractFolder destinationFolder, Boolean recursive, Boolean replaceExistingFiles, Object[] filters)
   at Xceed.FileSystem.AbstractFolder.CopyFilesTo(AbstractFolder destinationFolder, Boolean recursive, Boolean replaceExistingFiles, Object[] filters)
   at EagleTM.WINGS.Utility.WingsZipFile.WingsZipFile.UnZipFiles(String sourceZipFileName, String destinationFolderPath, String includeFileFilter) in C:\Wings70\Utility\EagleTM.WINGS.Utility.WingsZipFile\WingsZipFile.cs:line 533

Below is how I construct the zipArchive object.

var zipArchiveFile = new ZipArchive(abstractZipFile)

{ DefaultEncryptionMethod = WingsZipFileEncryptionMethod,

DefaultCompressionLevel = WingsZipFileCompressionLevel,

DefaultCompressionMethod = WingsZipFileCompressionMethod,

};

// Set Passwords use Defaults is set to true.

if (UseDefaultEncryptionPhrase)

zipArchiveFile.DefaultEncryptionPassword = "test";

if (UseDefaultDecryptionPhrase)

zipArchiveFile.DefaultDecryptionPassword = "test";

Below is how I unzip the files in the zip file. fileSearchParameters is a NameFilter[] of "*.*"

try { zipArchiveFile.CopyFilesTo(destinationDiskFolder, true, true,

fileSearchParameters ); }

catch (Exception extractZipFileException){

throw new ZipIOException(zipArchiveFile.ZipFile,
extractZipFileException.InnerException); }

How to specify the temporary path in which the temporary zipped file is created?

Andrew — Mon, 10 Jan 2011 08:20:15 GMT

We have an application zipping a user folder to 10M size splitted zipped files. The application is running on Window 2003 server.

I notice class ZipArchive first create a temporary file under [%UserProFile%]\Local Setting\Temp, and then create the splitted zipped files in target.

The problem is [%UserProFile%]\Local Setting\Temp is always in C: drive and not much free space. When zipping a folder over 10G, it always failed.

Can we change the path in which the temporary file is created?

I am looking forward to your answers.

Best regards,

Andrew

Zip Writer not disposing inner stream

Adam — Tue, 14 Sep 2010 22:18:06 GMT

When I call dispose on the ZipWriter it's not disposing the inner stream as I expected. Is your writer not disposing the inner stream on purpose, or is it a defect? I will work around it, but just wanted to know for future reference.

Pass-through zip decompression

Pascal — Fri, 04 Dec 2009 21:04:35 GMT

I'm working on a program that read large csv files which can be several hundreds MBs. I noticed that compressing those files with zip would reduced the disk space used by 10.

I was thinking allowing my program to read zip files as well but only as a pass-through stream so that there is no overhead on the disk or memory usage.

I though the CompressedStream class was the one I needed but the only CompressionMethod available for the constructor are Deflated, Deflated64 and Stored.

I couldn't find code samples with CompressedStream and Zip, is just not possible?

Thanks,

Pascal

Multi-volume Self-extracting archives

erich — Thu, 29 Oct 2009 20:52:27 GMT

I have been searching the site but can not find a definitive answer. Is it possible to create a multi-volume zip archive that is self-extracting? If so, at which version was this feature included?

Thank you

Erich

Zipping is not synchronous?

Jean Christophe — Fri, 25 Sep 2009 12:46:08 GMT

Hi,

I do a loop and I zip a file at each iteration.

When the loop ends, the zipping is not finished (I see the zips are still coming in the working directory).

Is the zipping asynchronous? is it possible to make it synchronous?

I use the following code to zip : diskFolder.CopyFilesTo(archief, true, true);

Thanks for your help

AES-256 supported in Xceed Zip?

Okash — Thu, 17 Sep 2009 11:56:32 GMT

Hi,

Does Xceed Zip for .NET library support AES-256 encryption? The KB article What type of encryption does Xceed Zip use/support? says "Xceed Zip for .NET will support AES encryption in the May 2006 release." in the end.

Many thanks

Okash