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/*
* Copyright (c) 2012, Chris Johns <chrisj@rtems.org>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/**
* @file
*
* @ingroup rtems_ld
*
* @brief RTEMS Linker.
*
*/
#if HAVE_CONFIG_H
#include "config.h"
#endif
#include <fstream>
#include <iostream>
#include <errno.h>
#include <string.h>
#include <rld.h>
#include <rld-compression.h>
#include "fastlz.h"
namespace rld
{
namespace compress
{
compressor::compressor (files::image& image,
size_t size,
bool compress)
: image (image),
size (size),
compress (compress),
buffer (0),
io (0),
level (0),
total (0),
total_compressed (0)
{
buffer = new uint8_t[size];
io = new uint8_t[size + (size / 10)];
}
compressor::~compressor ()
{
flush ();
delete [] buffer;
delete [] io;
}
void
compressor::write (const void* data_, size_t length)
{
const uint8_t* data = static_cast <const uint8_t*> (data_);
if (compress)
{
while (length)
{
size_t appending;
if (length > (size - level))
appending = size - level;
else
appending = length;
::memcpy ((void*) (buffer + level), data, appending);
level += appending;
length -= appending;
total += appending;
if (level >= size)
{
int writing =
::fastlz_compress (buffer, level, io);
image.write (io, writing);
total_compressed += writing;
level = 0;
}
}
}
else
{
image.write (data, length);
total += length;
}
}
void
compressor::flush ()
{
if (level)
{
int writing =
::fastlz_compress (buffer, level, io);
image.write (io, writing);
total_compressed += writing;
level = 0;
}
}
size_t
compressor::transferred () const
{
return total;
}
size_t
compressor::compressed () const
{
return total_compressed;
}
}
}
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