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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"><HTML>
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<TITLE>code/nel/src/net/message.cpp - view - 1.21</TITLE></HEAD>
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<table width="100%" border=0 cellspacing=0 cellpadding=1 bgcolor="#aaaaaa"><tr valign=bottom><td><a href="message.cpp?sortby=date"><IMG SRC="http://www.nevrax.org/inc/img/picto-up.gif" ALT="[BACK]" BORDER="0" WIDTH="14" HEIGHT="13"></a> <b>Return to <A HREF="message.cpp?sortby=date">message.cpp</A>
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Revision <B>1.21</B>, <i>Wed Jul 10 17:08:24 2002 UTC</i> (2 weeks, 4 days ago) by <i>lecroart</i>
<BR>Branch: <b>MAIN</b>
<BR>CVS Tags: <b>HEAD</b><BR>Changes since <b>1.20: +2 -2
lines</b><PRE>
REMOVE: a warning
</PRE>
</td></tr></table><HR noshade><PRE>/** \file message.cpp
* CMessage class
*
* $Id: message.cpp,v 1.21 2002/07/10 17:08:24 lecroart Exp $
*/
/* Copyright, 2000 Nevrax Ltd.
*
* This file is part of NEVRAX NEL.
* NEVRAX NEL 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, or (at your option)
* any later version.
* NEVRAX NEL 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 NEVRAX NEL; see the file COPYING. If not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
* MA 02111-1307, USA.
*/
#include "stdnet.h"
#include "nel/net/message.h"
/*#ifdef MESSAGES_PLAIN_TEXT
#pragma message( "CMessage: compiling messages as plain text" )
#else
#pragma message( "CMessage: compiling messages as binary" )
#endif*/
namespace NLNET
{
bool CMessage::_DefaultStringMode = false;
#define FormatLong 1
#define FormatShort 0
CMessage::CMessage (NLMISC::CStringIdArray &sida, const std::string &name, bool inputStream, TStreamFormat streamformat, uint32 defaultCapacity) :
NLMISC::CMemStream (inputStream, false, defaultCapacity),
_TypeSet (false), _SIDA (&sida), _HeaderSize(0xFFFFFFFF)
{
init( name, streamformat );
}
CMessage::CMessage (const std::string &name, bool inputStream, TStreamFormat streamformat, uint32 defaultCapacity) :
NLMISC::CMemStream (inputStream, false, defaultCapacity),
_TypeSet (false), _SIDA (NULL), _HeaderSize(0xFFFFFFFF)
{
init( name, streamformat );
}
/*
* Utility method
*/
void CMessage::init( const std::string &name, TStreamFormat streamformat )
{
if ( streamformat == UseDefault )
{
setStringMode( _DefaultStringMode );
}
else
{
setStringMode( streamformat == String );
}
if (!name.empty())
setType (name);
}
CMessage::CMessage (NLMISC::CMemStream &memstr) :
_HeaderSize(0xFFFFFFFF)
{
fill (memstr.buffer (), memstr.length ());
uint8 LongFormat=2;
serial (LongFormat);
if (LongFormat)
{
std::string name;
serial (name);
setType (name);
}
else
{
NLMISC::CStringIdArray::TStringId id;
serial (id);
setType (id);
}
}
/// Copy constructor
CMessage::CMessage (const CMessage &other)
{
operator= (other);
}
/// Assignment operator
CMessage &CMessage::operator= (const CMessage &other)
{
CMemStream::operator= (other);
_TypeSet = other._TypeSet;
_SIDA = other._SIDA;
TypeHasAnId = other.TypeHasAnId;
TypeHasAName = other.TypeHasAName;
_Name = other._Name;
_Id = other._Id;
_HeaderSize = other._HeaderSize;
return *this;
}
/// Sets the message type as a number (in range 0..32767) and put it in the buffer if we are in writing mode
void CMessage::setType (NLMISC::CStringIdArray::TStringId id)
{
// PATCH: the id system is not available
nlstop;
// check if we already do a setType ()
nlassert (!_TypeSet);
// don't accept negative value
nlassert (id >= 0 && id < pow(2, sizeof (NLMISC::CStringIdArray::TStringId)*8));
_Id = id;
TypeHasAnId = true;
TypeHasAName = false;
if (!isReading ())
{
// check if they don't already serial some stuffs
nlassert (length () == 0);
uint8 format = FormatLong | (_StringMode << 1);
nlinfo( "OUT format = %hu", (uint16)format );
// Force binary mode for header
bool msgmode = _StringMode;
_StringMode = false;
// debug features, we number all packet to be sure that they are all sent and received
// \todo remove this debug feature when ok
// this value will be fill after in the callback function
uint32 zeroValue = 123;
serial (zeroValue);
serial (format);
// End of binary header
_StringMode = msgmode;
serial (id);
_HeaderSize = getPos ();
}
else
{
// we set the id, now, we try to set the name if available in the sida
if (_SIDA != NULL)
{
_Name = _SIDA->getString (id);
TypeHasAName = true;
}
}
_TypeSet = true;
}
/// Sets the message type as a string and put it in the buffer if we are in writing mode
void CMessage::setType (const std::string &name)
{
// check if we already do a setType ()
nlassert (!_TypeSet);
// don't accept empty string
nlassert (!name.empty ());
_Name = name;
TypeHasAnId = false;
TypeHasAName = true;
if (!isReading ())
{
// check if they don't already serial some stuffs
nlassert (length () == 0);
// if we can send the id instead of the string, "just do it" (c)nike!
//NLMISC::CStringIdArray::TStringId id = _SIDA->getId (name);
// PATCH: always send in full text
NLMISC::CStringIdArray::TStringId id = -1;
// Force binary mode for header
bool msgmode = _StringMode;
_StringMode = false;
// debug features, we number all packet to be sure that they are all sent and received
// \todo remove this debug feature when ok
// this value will be fill after in the callback function
uint32 zeroValue = 123;
serial (zeroValue);
if (id == -1)
{
uint8 format = FormatLong | (msgmode << 1);
//nldebug( "OUT format = %hu", (uint16)format );
serial (format);
// End of binary header
_StringMode = msgmode;
serial ((std::string&)name);
}
else
{
uint8 format = FormatShort | (msgmode << 1);
//nldebug( "OUT format = %hu", (uint16)format );
serial (format);
// End of binary header
_StringMode = msgmode;
serial (id);
_Id = id;
TypeHasAnId = true;
}
_HeaderSize = getPos ();
}
_TypeSet = true;
}
/// Returns the size, in byte of the header that contains the type name of the message or the type number
uint32 CMessage::getHeaderSize ()
{
nlassert (!isReading ());
nlassert (_HeaderSize != 0xFFFFFFFF);
return _HeaderSize;
}
// The message was filled with an CMemStream, Now, we'll get the message type on this buffer
void CMessage::readType ()
{
nlassert (isReading ());
// debug features, we number all packet to be sure that they are all sent and received
// \todo remove this debug feature when ok
// we remove the message from the message
const uint HeaderSize = 4;
seek (HeaderSize, begin);
// uint32 zeroValue;
// serial (zeroValue);
// Force binary mode for header
_StringMode = false;
uint8 format;
serial (format);
//nldebug( "IN format = %hu", (uint16)format );
bool LongFormat = (format & 1);
// Set mode for the following of the buffer
_StringMode = (format >> 1) & 1;
if (LongFormat)
{
std::string name;
serial (name);
setType (name);
}
else
{
NLMISC::CStringIdArray::TStringId id;
serial (id);
setType (id);
}
}
// Returns true if the message type was already set
bool CMessage::typeIsSet () const
{
return _TypeSet;
}
// Clear the message. With this function, you can reuse a message to create another message
void CMessage::clear ()
{
CMemStream::clear ();
_TypeSet = false;
}
/// Returns the type name in string if available. Be sure that the message have the name of the message type
std::string CMessage::getName () const
{
nlassert (_TypeSet && TypeHasAName);
return _Name;
}
/// Returns the type id of this message is available.
NLMISC::CStringIdArray::TStringId CMessage::getId () const
{
nlassert (_TypeSet && TypeHasAnId);
return _Id;
}
/** Returns a readable string to display it to the screen. It's only for debugging purpose!
* Don't use it for anything else than to debugging, the string format could change in the futur
*/
std::string CMessage::toString () const
{
nlassert (_TypeSet);
std::stringstream s;
if (TypeHasAName && TypeHasAnId) s << "('" << _Name << "'," << _Id << ")";
else if (TypeHasAName) s << "('" << _Name << "'," << _SIDA->getId (_Name, true) << ")";
else if (TypeHasAnId) s << "('" << _SIDA->getString (_Id) << "'," << _Id << "')";
return s.str();
}
}
</PRE>
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