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main.cpp
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main.cpp
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/*
* The MIT License
*
* Copyright (c) 2010 Yuri K. Schlesner
* 2010 Hugo S. K. Puhlmann
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#if defined(_WIN32) // && defined(_DEBUG)
# define _CRTDBG_MAP_ALLOC
# include <stdlib.h>
# include <crtdbg.h>
#endif
#include "huffman.h"
#include "bitstream.h"
#include "dump_tree.h"
#include <iostream>
#include <iterator>
#include <string>
int main(int argc, char *argv[])
{
#if defined(_WIN32) // && defined(_DEBUG)
_CrtSetDbgFlag ( _CRTDBG_ALLOC_MEM_DF | _CRTDBG_LEAK_CHECK_DF );
#endif
if (argc != 4)
{
std::cerr << "Invalid number of arguments." << std::endl;
std::cerr << "Usage: Huffman.exe -c/-u <infile> <outfile>" << std::endl;
return 1;
}
std::ifstream in_file(argv[2], std::ios::in | std::ios::binary);
if (!in_file)
{
std::cerr << "Couldn't open " << argv[2] << std::endl;
return 2;
}
std::ofstream out_file(argv[3], std::ios::out | std::ios::binary | std::ios::trunc);
if (!out_file)
{
std::cerr << "Couldn't open " << argv[3] << std::endl;
return 3;
}
std::string arg(argv[1]);
if (arg == "-c")
{
OFileBitstream stream(out_file);
std::istreambuf_iterator<char> in_iter(in_file);
std::cerr << "Construindo arvore..." << std::endl;
Dictionary<unsigned char>* tree = build_huffman_tree(in_iter, std::istreambuf_iterator<char>());
std::ifstream::pos_type size = in_file.tellg();
in_file.seekg(0);
std::cerr << "Comprimindo arquivo..." << std::endl;
huffman_compress(tree, stream, in_iter, std::istreambuf_iterator<char>(), size);
delete tree;
}
else if (arg == "-u")
{
in_file.seekg(0, std::ios::end);
unsigned long long size = in_file.tellg();
in_file.seekg(0);
IFileBitstream istream(in_file);
std::cerr << "Lendo arvore..." << std::endl;
Dictionary<unsigned char>* tree = readNode(istream);
size -= in_file.tellg();
std::cerr << "Descomprimindo arquivo..." << std::endl;
huffman_uncompress(istream, out_file, tree, size);
delete tree;
}
else if (arg == "--make-tree")
{
std::istreambuf_iterator<char> in_iter(in_file);
Dictionary<unsigned char>* tree = build_huffman_tree(in_iter, std::istreambuf_iterator<char>());
print_huffman_tree(tree, out_file);
delete tree;
}
else if (arg == "--read-tree")
{
IFileBitstream istream(in_file);
Dictionary<unsigned char>* tree = readNode(istream);
print_huffman_tree(tree, out_file);
delete tree;
}
out_file.close();
in_file.close();
return 0;
}