Re: [Boost-users] [boost.iostreams] Can't be able to read gzippedfile

From: Marc Viala Perso (marc.viala_at_[hidden])
Date: 2008-01-18 04:10:34

Hi Jonathan,

Thanks for handling this problem. 

Just to push more information on that subject, I've just tried, this
morning, to replace file_descriptor_source/ file_descriptor_sink by
fs::ifstream/fs::ofstream instance in the filtering chain and the same code
snippet seems to works, i.e.:

  {
    fs::ofstream ofs(test_file, std::ios::binary) ;
    io::filtering_stream<io::output> ofilter ;
    
    ofilter.push(io::gzip_compressor()) ;
    ofilter.push(ofs) ;

    ofilter << s ;
  }  

  {
    fs::ifstream ifs(test_file, std::ios::binary) ;
    io::filtering_stream<io::input> ifilter ;

    ifilter.push(io::gzip_decompressor()) ;
    ifilter.push(ifs) ;

    std::string rs ;
    ifilter >> rs ;
  }

Looking forward to hearing from you.

Best regards,

Marc VIALA
 
> bounces_at_[hidden]] De la part de Jonathan Turkanis
> Envoyé : vendredi 18 janvier 2008 04:50
> > During the implementation of a TARFILE module based on Boost.Iostream,
> > I’ve faced a problem during reading operation of a
> > boost::iostream::filtering_stream<> with a GZip codec. To illustrate it,
> > you will find hereafter a small code snippet that reproduces my problem:
> 
> ...
> 
> > Is there any bug in GZip decompressor with the file_descriptor_source?
> > Or I’ve missed something?
> 
> I'll look into it.
> 
> --
> Jonathan Turkanis