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/* socket_client.cc - D�finition de la classe des sockets client */
/* Simulotron - Programme de simulation de robot {{{
 *
 * Copyright (C) 2005 Nicolas Haller
 *
 * Robot APB Team/Efrei 2005.
 *        Web: http://assos.efrei.fr/robot/
 *      Email: robot AT efrei DOT fr
 *
 * 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 2 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, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 *
 * }}} */
#include "socket/socket_client.hh"
#include "socket/socket_server.hh"
#include "socket/address.hh"
#include "utils/errno_exception.hh"

#include <sys/socket.h>
#include <cerrno>

SocketClient::SocketClient (void)
{
    // Cr�e le file descriptor du socket
    socket_ = socket (PF_INET, SOCK_STREAM, 0);
    if (socket_ < 0)
	throw errno_exception ("La chaussette n'a pas pu �tre tricot�", errno);
}

SocketClient::SocketClient (SocketServer & socketServer)
{
    socket_ = socketServer.accept ();
    if (socket_ < 0)
	throw errno_exception ("Probl�me lors de la construction d'une chaussette cliente par accept", errno);
}

SocketClient::~SocketClient (void)
{
    if (socket_ >= 0)
	::close (socket_);
}

void
SocketClient::connect (const Address & address)
{
    if (::connect (socket_, address.getSockaddr (), sizeof (sockaddr_in)) < 0)
	throw errno_exception ("Impossible de mettre la chaussette", errno);
}

void
SocketClient::connect (const std::string & address, int port)
{
    connect (Address(address, port));
}

std::string
SocketClient::read (void)
{
    std::string str;
    int charReaded;
    char buffer[BUFFER_SIZE];
    do
    {
	charReaded = ::read (socket_, buffer, BUFFER_SIZE - 1);
	if (charReaded < 0)
	    throw errno_exception ("SocketClient: probl�me de lecture", errno);
	//buffer[charReaded] = 0;
	//str += buffer;
	str.append(buffer, charReaded);
    }while (charReaded == BUFFER_SIZE - 1);
    return str;
}

void
SocketClient::write (const std::string & str)
{
    char buffer[BUFFER_SIZE];
    unsigned int pos = 0;
    int retval = 0;

    while (str.size () != pos)
    {
	int size = str.size () - pos < BUFFER_SIZE - 1 ? str.size () - pos:BUFFER_SIZE - 1;
	str.copy (buffer, size, pos);
	pos += size;
	retval = ::write (socket_, buffer, size);
	if (retval < 0)
	    throw errno_exception ("SocketClient: erreur d'�criture (write()) ", errno);
    }
}

char
SocketClient::getChar (void)
{
    char getted;
    if (::read (socket_, &getted, 1) < 0)
	throw errno_exception ("SocketClient: erreur d'�criture (write()) ", errno);
    return getted;
}

void
SocketClient::putChar (char c)
{
    if (::write (socket_, &c, 1) < 0)
	throw errno_exception ("SocketClient: erreur d'�criture (write()) ", errno);
}

int
SocketClient::getFD(void)
{
    return socket_;
}