File: sys_null.c

package info (click to toggle)
quakeforge 0.1.1-1
  • links: PTS
  • area: contrib
  • in suites: potato
  • size: 6,820 kB
  • ctags: 16,579
  • sloc: ansic: 101,853; asm: 9,997; sh: 3,175; makefile: 762; perl: 33
file content (192 lines) | stat: -rw-r--r-- 3,262 bytes parent folder | download
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
/*
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 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 I/O
*/

#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]);
}

/*
	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);
	}
}