Re: [Boost-bugs] [Boost C++ Libraries] #5291: bzip2_decompressor does not work properly with a filtering_streambuf

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #5291: bzip2_decompressor does not work properly with a filtering_streambuf
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2011-11-17 19:18:23

#5291: bzip2_decompressor does not work properly with a filtering_streambuf
---------------------------------------------------------+------------------
  Reporter:  Chris Steenwyk <chris.steenwyk@…>           |       Owner:  turkanis 
      Type:  Bugs                                        |      Status:  new      
 Milestone:  To Be Determined                            |   Component:  iostreams
   Version:  Boost 1.45.0                                |    Severity:  Problem  
Resolution:                                              |    Keywords:           
---------------------------------------------------------+------------------

Comment (by chris.steenwyk@…):

 Sorry it took so long.

 The code below works on boost 1.42 and generates an exception on 1.45. I
 have also attached a patch to add this test into the test file
 bzip2_test.cpp.

 {{{
 #include <string>
 #include <boost/iostreams/filter/bzip2.hpp>
 #include <boost/iostreams/filter/test.hpp>
 #include <boost/iostreams/filtering_stream.hpp>

 std::vector<char> temp;
 std::string source( "This is test data" );
 std::vector<char> sourceVector( source.begin(), source.end() );
 std::vector<char> dest;

 // Write compressed source to temp
 boost::iostreams::filtering_streambuf< boost::iostreams::output > out;
 out.push( boost::iostreams::bzip2_compressor() );
 out.push( boost::iostreams::back_inserter( temp ) );
 boost::iostreams::copy( boost::make_iterator_range( source ), out );

 // Add uncompressed source around the compressed source
 temp.insert( temp.begin(), source.begin(), source.end() );
 temp.insert( temp.end(), source.begin(), source.end() );

 // Read compressed data from temp into dest
 boost::iostreams::array_source inStr( &temp[ source.length() ],
 temp.size() );
 boost::iostreams::filtering_streambuf< boost::iostreams::input > in;
 in.push( boost::iostreams::bzip2_decompressor() );
 in.push( inStr );
 boost::iostreams::copy( in, boost::iostreams::back_inserter( dest ) );
 }}}

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/5291#comment:2>
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