[Boost-bugs] [Boost C++ Libraries] #5629: base64 encode/decode for std::istreambuf_iterator/std::ostreambuf_iterator

Subject: [Boost-bugs] [Boost C++ Libraries] #5629: base64 encode/decode for std::istreambuf_iterator/std::ostreambuf_iterator
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2011-06-22 13:29:41

#5629: base64 encode/decode for std::istreambuf_iterator/std::ostreambuf_iterator
-------------------------------+--------------------------------------------
 Reporter:  nen777w@…          |       Owner:  dave    
     Type:  Bugs               |      Status:  new     
Milestone:  To Be Determined   |   Component:  iterator
  Version:  Boost 1.45.0       |    Severity:  Problem 
 Keywords:                     |  
-------------------------------+--------------------------------------------
 MSVS 2008
 The code:
 {{{
 #include "boost/archive/iterators/base64_from_binary.hpp"
 #include "boost/archive/iterators/binary_from_base64.hpp"
 #include "boost/archive/iterators/transform_width.hpp"

 //typedefs
 typedef  std::istreambuf_iterator<char>    my_istream_iterator;
 typedef  std::ostreambuf_iterator<char>    my_ostream_iterator;

 typedef boost::archive::iterators::base64_from_binary<
           boost::archive::iterators::transform_width< my_istream_iterator,
 6, 8>
 > bin_to_base64;

 typedef boost::archive::iterators::transform_width<
     boost::archive::iterators::binary_from_base64< my_istream_iterator >,
 8, 6
 > base64_to_bin;

 void test()
 {
    {
         //INPUT FILE!!!
     std::ifstream ifs("test.zip",
 std::ios_base::in|std::ios_base::binary);
     std::ofstream ofs("test.arc",
 std::ios_base::out|std::ios_base::binary);

     std::copy(
         bin_to_base64( my_istream_iterator(ifs >> std::noskipws) ),
         bin_to_base64( my_istream_iterator() ),
         my_ostream_iterator(ofs)
     );
   }

   {
     std::ifstream ifs("test.arc",
 std::ios_base::in|std::ios_base::binary);
     std::ofstream ofs("test.rez",
 std::ios_base::out|std::ios_base::binary);

     std::copy(
         base64_to_bin( my_istream_iterator(ifs >> std::noskipws) ),
         base64_to_bin( my_istream_iterator() ),
         my_ostream_iterator(ofs)
     );
   }
 }
 }}}

 Result:
 1) If the INPUT FILE will be any of ZIP-file format. The result was:
    a) _DEBUG_ERROR("istreambuf_iterator is not dereferencable"); //it can
 be disabled or ignored
    b) The encoded file "test.rez" will have one superfluous byte than
 INPUT FILE

 2) If the INPUT FILE will any other file (binary or text) all will be OK.

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/5629>
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