The Quake sources as originally release under the GPL license on December 21, 1999

WinQuake/sys_null.c

@@ -0,0 +1,232 @@
+/*
+Copyright (C) 1996-1997 Id Software, Inc.
+
+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.
+
+*/
+// sys_null.h -- null system driver to aid porting efforts
+
+#include "quakedef.h"
+#include "errno.h"
+
+/*
+===============================================================================
+
+FILE IO
+
+===============================================================================
+*/
+
+#define MAX_HANDLES             10
+FILE    *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 (FILE *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)
+{
+	FILE    *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)
+{
+	FILE    *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]);
+}
+
+int     Sys_FileTime (char *path)
+{
+	FILE    *f;
+	
+	f = fopen(path, "rb");
+	if (f)
+	{
+		fclose(f);
+		return 1;
+	}
+	
+	return -1;
+}
+
+void Sys_mkdir (char *path)
+{
+}
+
+
+/*
+===============================================================================
+
+SYSTEM IO
+
+===============================================================================
+*/
+
+void Sys_MakeCodeWriteable (unsigned long startaddr, unsigned long length)
+{
+}
+
+
+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_Printf (char *fmt, ...)
+{
+	va_list         argptr;
+	
+	va_start (argptr,fmt);
+	vprintf (fmt,argptr);
+	va_end (argptr);
+}
+
+void Sys_Quit (void)
+{
+	exit (0);
+}
+
+double Sys_FloatTime (void)
+{
+	static double t;
+	
+	t += 0.1;
+	
+	return t;
+}
+
+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);
+	}
+}
+
+