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+/* gs_transmitter.cc - Classe de transmission des grosses string */
+/* 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 "gs/gs_transmitter.hh"
+#include "gs/gs_message.hh"
+#include "socket/socket_client.hh"
+
+GSTransmitter::GSTransmitter(SocketClient & socket)
+ :socket_(socket)
+{
+}
+
+/// Renvoie 0 quand un message est récupéré, -1 sinon
+int
+GSTransmitter::getGS(GSMessage & gsm)
+{
+ unsigned int size = 0;
+ std::string strRead (socket_.read ());
+ strBrut_ += strRead;
+ size = static_cast<int> (strRead[0]) << 24
+ | static_cast<int> (strRead[1]) << 16
+ | static_cast<int> (strRead[2]) << 8
+ | static_cast<int> (strRead[3]);
+ if(size > strBrut_.size() - 4)
+ return -1;
+ strRead = strBrut_.substr (4, size -1);
+ strBrut_.erase (4, size - 1);
+ gsm.writeGS (strRead.c_str (), size);
+ return 0;
+}
+
+void
+GSTransmitter::putGS(const GSMessage & gsm)
+{
+ std::string gs(gsm.getGS ());
+ char bsize[4];
+ int size = gs.size();
+ bsize[0] = static_cast<char> (size >> 24);
+ bsize[1] = static_cast<char> (size >> 16);
+ bsize[2] = static_cast<char> (size >> 8);
+ bsize[3] = static_cast<char> (size);
+ gs.insert(0, bsize);
+ socket_.write (gsm.getGS ());
+}