mirror of
https://github.com/ioquake/ioq3.git
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129 lines
2.9 KiB
C
129 lines
2.9 KiB
C
/*
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===========================================================================
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Copyright (C) 1999-2005 Id Software, Inc.
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This file is part of Quake III Arena source code.
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Quake III Arena source code is free software; you can redistribute it
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and/or modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of the License,
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or (at your option) any later version.
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Quake III Arena source code is distributed in the hope that it will be
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useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Quake III Arena source code; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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===========================================================================
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*/
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#include "../qcommon/q_shared.h"
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#include "../qcommon/qcommon.h"
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#include "sys_local.h"
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#define MAX_LOG 32768
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static char consoleLog[ MAX_LOG ];
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static unsigned int writePos = 0;
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static unsigned int readPos = 0;
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/*
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==================
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CON_LogSize
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==================
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*/
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unsigned int CON_LogSize( void )
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{
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if( readPos <= writePos )
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return writePos - readPos;
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else
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return writePos + MAX_LOG - readPos;
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}
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/*
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==================
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CON_LogFree
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==================
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*/
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static unsigned int CON_LogFree( void )
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{
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return MAX_LOG - CON_LogSize( ) - 1;
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}
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/*
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==================
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CON_LogWrite
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==================
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*/
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unsigned int CON_LogWrite( const char *in )
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{
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unsigned int length = strlen( in );
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unsigned int firstChunk;
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unsigned int secondChunk;
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while( CON_LogFree( ) < length && CON_LogSize( ) > 0 )
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{
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// Free enough space
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while( consoleLog[ readPos ] != '\n' && CON_LogSize( ) > 1 )
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readPos = ( readPos + 1 ) % MAX_LOG;
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// Skip past the '\n'
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readPos = ( readPos + 1 ) % MAX_LOG;
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}
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if( CON_LogFree( ) < length )
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return 0;
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if( writePos + length > MAX_LOG )
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{
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firstChunk = MAX_LOG - writePos;
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secondChunk = length - firstChunk;
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}
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else
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{
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firstChunk = length;
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secondChunk = 0;
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}
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Com_Memcpy( consoleLog + writePos, in, firstChunk );
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Com_Memcpy( consoleLog, in + firstChunk, secondChunk );
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writePos = ( writePos + length ) % MAX_LOG;
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return length;
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}
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/*
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==================
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CON_LogRead
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==================
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*/
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unsigned int CON_LogRead( char *out, unsigned int outSize )
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{
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unsigned int firstChunk;
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unsigned int secondChunk;
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if( CON_LogSize( ) < outSize )
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outSize = CON_LogSize( );
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if( readPos + outSize > MAX_LOG )
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{
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firstChunk = MAX_LOG - readPos;
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secondChunk = outSize - firstChunk;
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}
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else
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{
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firstChunk = outSize;
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secondChunk = 0;
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}
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Com_Memcpy( out, consoleLog + readPos, firstChunk );
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Com_Memcpy( out + firstChunk, consoleLog, secondChunk );
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readPos = ( readPos + outSize ) % MAX_LOG;
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return outSize;
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}
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