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#include "Bzip2Compressor.h"
#include "bzlib.h"
TAO_BEGIN_VERSIONED_NAMESPACE_DECL
namespace TAO
{
Bzip2Compressor::Bzip2Compressor (
::Compression::CompressorFactory_ptr compressor_factory,
::Compression::CompressionLevel compression_level) :
BaseCompressor (compressor_factory, compression_level)
{
}
void
Bzip2Compressor::compress (
const ::Compression::Buffer & source,
::Compression::Buffer & target
)
{
// Ensure maximum is at least a bit bigger than input length.
target.length (static_cast <CORBA::ULong> ((source.length () * 1.01) + 600));
unsigned int max_length = static_cast <unsigned int> ( target.maximum () );
int const retval = ::BZ2_bzBuffToBuffCompress (reinterpret_cast <char*>(target.get_buffer ()),
&max_length,
reinterpret_cast <char*>(const_cast<CORBA::Octet*>(source.get_buffer ())),
source.length (),
9,
1,
this->compression_level () * 25);
if (retval != BZ_OK)
{
throw ::Compression::CompressionException (retval, "");
}
else
{
target.length (static_cast <CORBA::ULong> (max_length));
}
// Update statistics for this compressor
this->update_stats (source.length (), target.length ());
}
void
Bzip2Compressor::decompress (
const ::Compression::Buffer & source,
::Compression::Buffer & target)
{
unsigned int max_length = static_cast <unsigned int> (target.maximum ());
// todo, check 0,1 values
int const retval = ::BZ2_bzBuffToBuffDecompress (reinterpret_cast <char*>(target.get_buffer ()),
&max_length,
reinterpret_cast <char*>(const_cast<CORBA::Octet*>(source.get_buffer ())),
source.length (),
0,
1);
if (retval != BZ_OK)
{
throw ::Compression::CompressionException (retval, "");
}
else
{
target.length (static_cast <CORBA::ULong> (max_length));
}
}
}
TAO_END_VERSIONED_NAMESPACE_DECL
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