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/*
	Copyright © 2015 Gluzskiy Alexandr (sss)

    This file is part of Unknown Download Manager (UDM).

    UDM 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 2 of the License, or
    (at your option) any later version.

    UDM 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 UDM.  If not, see <http://www.gnu.org/licenses/>.

*/

#include "utilities.h"
#include "../../protocol/udm.pb.h"

std::string replace_home_var(const std::string &path)
{
	std::string home = getenv("HOME"), tmp_path = path;
	for(std::string::size_type p1 = tmp_path.find("~"); p1 != std::string::npos; p1 = tmp_path.find("~", p1))
		tmp_path.replace(p1, 1, home);
	return tmp_path;

}


std::shared_ptr<char*> pack_data(const std::string &buf, int *size_)
{
//	BOOST_LOG_TRIVIAL(debug)<<__FILE__<<":"<<__LINE__<<"\t"<<__func__;
	std::shared_ptr<char*> ptr = std::make_shared<char*>(new char[buf.length() + 4]);
	int32_t size = buf.length();
	*size_ = size + 4;
	(*ptr)[3] = size & 0xff;
	(*ptr)[2] = (size>>8) & 0xff;
	(*ptr)[1] = (size>>16) & 0xff;
	(*ptr)[0] = (size>>24) & 0xff;
	char *fck = (*ptr)+4;
	memcpy(fck, buf.data(), buf.length());
	return ptr;
}

std::shared_ptr<char*> pack_msg(server_msg *msg, int *size_)
{
//	BOOST_LOG_TRIVIAL(debug)<<__FILE__<<":"<<__LINE__<<"\t"<<__func__;
//	BOOST_LOG_TRIVIAL(trace)<<"packing message:\n"<<cmd.DebugString();
	std::string msg_buf;
	msg->SerializeToString(&msg_buf);
	return pack_data(msg_buf, size_);
}