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/*
* ZeroTier One - Global Peer to Peer Ethernet
* Copyright (C) 2012-2013 ZeroTier Networks LLC
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* --
*
* ZeroTier may be used and distributed under the terms of the GPLv3, which
* are available at: http://www.gnu.org/licenses/gpl-3.0.html
*
* If you would like to embed ZeroTier into a commercial application or
* redistribute it in a modified binary form, please contact ZeroTier Networks
* LLC. Start here: http://www.zerotier.com/
*/
/* Converts files to LZ4-compressed C arrays, used in building installers. */
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <stdint.h>
#include <iostream>
#include "node/Utils.hpp"
#include "ext/lz4/lz4.h"
#include "ext/lz4/lz4hc.h"
using namespace ZeroTier;
int main(int argc,char **argv)
{
char tmp[16];
if (argc != 3) {
std::cerr << "Usage: " << argv[0] << " <file> <name of C array>" << std::endl;
return -1;
}
std::string buf;
if (!Utils::readFile(argv[1],buf)) {
std::cerr << "Could not read " << argv[1] << std::endl;
return -1;
}
unsigned char *compbuf = new unsigned char[LZ4_compressBound((int)buf.length())];
int complen = LZ4_compressHC(buf.data(),(char *)compbuf,(int)buf.length());
if (complen <= 0) {
std::cerr << "Error compressing data." << std::endl;
return -1;
}
std::cout << "#define " << argv[2] << "_UNCOMPRESSED_LEN " << buf.length() << std::endl;
std::cout << "#define " << argv[2] << "_LZ4_LEN " << complen << std::endl;
std::cout << "static const unsigned char " << argv[2] << '[' << argv[2] << "_LZ4_LEN] = {";
for(int i=0;i<complen;++i) {
if (!(i % 15))
std::cout << std::endl << '\t';
Utils::snprintf(tmp,sizeof(tmp),"0x%.2x",(unsigned int)compbuf[i]);
std::cout << tmp;
if (i != (complen - 1))
std::cout << ',';
}
std::cout << std::endl << "};" << std::endl;
delete [] compbuf;
return 0;
}
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