quakeforge-old/common/sys_null.c

/*
	sys_null.h

	null system driver to aid porting efforts

	Copyright (C) 1996-1997  Id Software, Inc.
	Copyright (C) 1999,2000  contributors of the QuakeForge project
	Please see the file "AUTHORS" for a list of contributors

	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:

		Free Software Foundation, Inc.
		59 Temple Place - Suite 330
		Boston, MA  02111-1307, USA

	$Id$
*/

#include <quakedef.h>
#include <errno.h>

/*
	File I/O
*/

#define MAX_HANDLES 64	// 1999-12-23 More PAK files support by Maddes
QFile	*sys_handles[MAX_HANDLES];

int
findhandle ( void )
{
	int	i;

	for (i=1 ; i<MAX_HANDLES ; i++)
		if (!sys_handles[i])
			return i;
	Sys_Error ("out of handles");
	return -1;
}

/*
================
filelength
================
*/
int
filelength ( QFile *f )
{
	int		pos;
	int		end;

	pos = ftell (f);
	fseek (f, 0, SEEK_END);
	end = ftell (f);
	fseek (f, pos, SEEK_SET);

	return end;
}

int
Sys_FileOpenRead ( char *path, int *hndl )
{
	QFile	*f;
	int		i;

	i = findhandle ();

	f = fopen(path, "rb");
	if (!f)
	{
		*hndl = -1;
		return -1;
	}
	sys_handles[i] = f;
	*hndl = i;

	return filelength(f);
}

int
Sys_FileOpenWrite ( char *path )
{
	QFile	*f;
	int		i;

	i = findhandle ();

	f = fopen(path, "wb");
	if (!f)
		Sys_Error ("Error opening %s: %s", path,strerror(errno));
	sys_handles[i] = f;

	return i;
}

void
Sys_FileClose ( int handle )
{
	fclose (sys_handles[handle]);
	sys_handles[handle] = NULL;
}

void
Sys_FileSeek ( int handle, int position )
{
	fseek (sys_handles[handle], position, SEEK_SET);
}

int
Sys_FileRead ( int handle, void *dest, int count )
{
	return fread (dest, 1, count, sys_handles[handle]);
}

int
Sys_FileWrite ( int handle, void *data, int count )
{
	return fwrite (data, 1, count, sys_handles[handle]);
}

/*
	System I/O
*/

void
Sys_MakeCodeWriteable ( unsigned long startaddr, unsigned long length )
{
}

void
Sys_DebugLog ( char *file, char *fmt, ... )
{
}

void
Sys_Error ( char *error, ... )
{
	va_list	argptr;

	printf ("Sys_Error: ");
	va_start (argptr,error);
	vprintf (error,argptr);
	va_end (argptr);
	printf ("\n");

	exit (1);
}

void
Sys_Quit ( void )
{
	exit (0);
}

char *
Sys_ConsoleInput ( void )
{
	return NULL;
}

void
Sys_Sleep ( void )
{
}

void
Sys_SendKeyEvents ( void )
{
}

void
Sys_HighFPPrecision ( void )
{
}

void
Sys_LowFPPrecision ( void )
{
}

//=============================================================================

void
main ( int argc, char **argv )
{
	static quakeparms_t	parms;

	parms.memsize = 8*1024*1024;
	parms.membase = malloc (parms.memsize);
	parms.basedir = ".";

	COM_InitArgv (argc, argv);

	parms.argc = com_argc;
	parms.argv = com_argv;

	printf ("Host_Init\n");
	Host_Init (&parms);
	while (1)
	{
		Host_Frame (0.1);
	}
}