Hi Wei,
> I don't know if WinZip will handle gzip files, but WinRAR certainly does.
It was WinZIP...
Jeff
On 5/27/07, Jeffrey Walton <[EMAIL PROTECTED]> wrote:
> Hi Wei,
>
> Thanks.
>
> > You code looks ok, except that the "9" parameter should be passed to Gzip,
> > not FileSink.
> Whoops - that's the actual code (not fat fingered during
> transcription). What follows corrects the record.
>
> Jeff
>
> try {
> CryptoPP::Gzip zipper(
> // true = binary
> new CryptoPP::FileSink (filename.c_str(), true ),
> CryptoPP::Gzip::MAX_DEFLATE_LEVEL ); // Gzip
>
> zipper.Put( (byte*)pCodeStart, dwCodeSize );
> zipper.MessageEnd( );
> }
>
> catch( CryptoPP::Exception& e )
> {
> std::cerr << e.what() << std:: endl;
> }
>
> ...
>
> On 5/27/07, Wei Dai <[EMAIL PROTECTED]> wrote:
> > I don't know if WinZip will handle gzip files, but WinRAR certainly does.
> > You code looks ok, except that the "9" parameter should be passed to Gzip,
> > not FileSink.
> >
> > ----- Original Message -----
> > From: "Jeffrey Walton" <[EMAIL PROTECTED]>
> > To: "Crypto++" <[EMAIL PROTECTED]>
> > Sent: Sunday, May 27, 2007 3:13 PM
> > Subject: Embarassing Question: GZip
> >
> >
> > >
> > > Hi All,
> > >
> > > I hate asking this one, but I'm neck deep in a Memorial Day deadline...
> > >
> > > I compressed an image (generic term... not a picture) using Gzip as
> > > follows below. The archive is created, and image size is showming
> > > compression (1.5 MB -> 450 KB). When I attempt to view in WinZip, I
> > > receive the message, "Cannot open file: it does not appear to be a
> > > valid archive. If you downloaded this file, try downloading the file
> > > again."
> > >
> > > My question[s] is/are:
> > > 1) Does WinZip not handle a GZip properly?
> > > 2) If [1], what is a recommended external viewer to validate the
> > > results of the operation on a Win32 platform
> > > 3) Am I doing something wrong (most likely)
> > >
> > > Jeff
> > >
> > >
> > > try {
> > > CryptoPP::Gzip zipper(
> > > // Compression Speed: 1 = fast, 9 = slow
> > > new CryptoPP::FileSink ( filename.c_str(), 9 )
> > > );
> > > zipper.Put( (byte*)pCodeStart, dwCodeSize );
> > > zipper.MessageEnd( );
> > > }
> > >
> > > catch( CryptoPP::Exception& e )
> > > {
> > > std::cerr << e.what() << std:: endl;
> > > }
> > >
> > > catch( ... )
> > > {
> > > std::tcerr << _T("Caught Unknown Exception") << std:: endl;
> > > }
> > >
> > > > > >
> >
> >
> >
>
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