quakeforge/libs/gamecode/builtins/bi_qfile.c

/*
	bi_file.c

	CSQC file builtins

	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:

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

*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif

static __attribute__ ((unused)) const char rcsid[] = 
	"$Id$";

#include <stdlib.h>
#ifdef HAVE_STRING_H
# include <string.h>
#endif
#ifdef HAVE_STRINGS_H
# include <strings.h>
#endif

#ifdef HAVE_FNMATCH_H
# define model_t sunmodel_t
# include <fnmatch.h>
# undef model_t
#else
# ifdef WIN32
# include "fnmatch.h"
# endif
#endif

#ifndef HAVE_FNMATCH_PROTO
int         fnmatch (const char *__pattern, const char *__string, int __flags);
#endif

#include "QF/csqc.h"
#include "QF/progs.h"
#include "QF/quakefs.h"
#include "QF/va.h"
#include "QF/zone.h"

#define MAX_HANDLES 20
static QFile *handles[MAX_HANDLES];

int
QFile_open (struct progs_s *pr, const char *path, const char *mode)
{
	int         h;

	for (h = 0; h < MAX_HANDLES && handles[h]; h++)
		;
	if (h == MAX_HANDLES)
		goto error;
	if (!(handles[h] = Qopen (path, mode)))
		goto error;
	return h + 1;
error:
	return 0;
}

static void
secured (progs_t *pr)
{
	PR_RunError (pr, "Secured function called");
}

static void
bi_Qrename (progs_t *pr)
{
	const char *old = P_STRING (pr, 0);
	const char *new = P_STRING (pr, 1);

	R_INT (pr) = Qrename (old, new);
}

static void
bi_Qremove (progs_t *pr)
{
	const char *path = P_STRING (pr, 0);

	R_INT (pr) = Qremove (path);
}

static void
bi_Qopen (progs_t *pr)
{
	const char *path = P_STRING (pr, 0);
	const char *mode = P_STRING (pr, 1);

	R_INT (pr) = QFile_open (pr, path, mode);
}

static void
bi_Qclose (progs_t *pr)
{
	int         h = P_INT (pr, 0) - 1;

	if (h < 0 || h >= MAX_HANDLES || !handles[h])
		return;
	Qclose (handles[h]);
	handles[h] = 0;
}

static void
bi_Qgetline (progs_t *pr)
{
	int         h = P_INT (pr, 0) - 1;
	const char *s;

	if (h < 0 || h >= MAX_HANDLES || !handles[h]) {
		R_INT (pr) = 0;
		return;
	}
	s = Qgetline (handles[h]);
	RETURN_STRING (pr, s);
}

static void
check_buffer (progs_t *pr, pr_type_t *buf, int count, const char *name)
{
	int         len;

	len = (count + sizeof (pr_type_t) - 1) / sizeof (pr_type_t);
	if (buf < pr->pr_globals || buf + len > pr->pr_globals + pr->globals_size)
		PR_RunError (pr, "%s: bad buffer", name);
}

static void
bi_Qread (progs_t *pr)
{
	int         h = P_INT (pr, 0) - 1;
	pr_type_t  *buf = P_POINTER (pr, 1);
	int         count = P_INT (pr, 2);

	if (h < 0 || h >= MAX_HANDLES || !handles[h]) {
		R_INT (pr) = -1;
		return;
	}
	check_buffer (pr, buf, count, "Qread");
	R_INT (pr) = Qread (handles[h], buf, count);
}

static void
bi_Qwrite (progs_t *pr)
{
	int         h = P_INT (pr, 0) - 1;
	pr_type_t  *buf = P_POINTER (pr, 1);
	int         count = P_INT (pr, 2);

	if (h < 0 || h >= MAX_HANDLES || !handles[h]) {
		R_INT (pr) = -1;
		return;
	}
	check_buffer (pr, buf, count, "Qwrite");
	R_INT (pr) = Qwrite (handles[h], buf, count);
}

static void
bi_Qputs (progs_t *pr)
{
	int         h = P_INT (pr, 0) - 1;
	const char *str = P_STRING (pr, 1);

	if (h < 0 || h >= MAX_HANDLES || !handles[h]) {
		R_INT (pr) = -1;
		return;
	}
	R_INT (pr) = Qputs (handles[h], str);
}
#if 0
static void
bi_Qgets (progs_t *pr)
{
	int         h = P_INT (pr, 0) - 1;
	pr_type_t  *buf = P_POINTER (pr, 1);
	int         count = P_INT (pr, 2);

	if (h < 0 || h >= MAX_HANDLES || !handles[h]) {
		R_INT (pr) = -1;
		return;
	}
	check_buffer (pr, buf, count, "Qgets");
	R_INT (pr) = POINTER_TO_PROG (pr, Qgets (handles[h], (char *) buf, count));
}
#endif
static void
bi_Qgetc (progs_t *pr)
{
	int         h = P_INT (pr, 0) - 1;

	if (h < 0 || h >= MAX_HANDLES || !handles[h]) {
		R_INT (pr) = -1;
		return;
	}
	R_INT (pr) = Qgetc (handles[h]);
}

static void
bi_Qputc (progs_t *pr)
{
	int         h = P_INT (pr, 0) - 1;
	int         c = P_INT (pr, 1);

	if (h < 0 || h >= MAX_HANDLES || !handles[h]) {
		R_INT (pr) = -1;
		return;
	}
	R_INT (pr) = Qputc (handles[h], c);
}

static void
bi_Qseek (progs_t *pr)
{
	int         h = P_INT (pr, 0) - 1;
	int         offset = P_INT (pr, 1);
	int         whence = P_INT (pr, 2);

	if (h < 0 || h >= MAX_HANDLES || !handles[h]) {
		R_INT (pr) = -1;
		return;
	}
	R_INT (pr) = Qseek (handles[h], offset, whence);
}

static void
bi_Qtell (progs_t *pr)
{
	int         h = P_INT (pr, 0) - 1;

	if (h < 0 || h >= MAX_HANDLES || !handles[h]) {
		R_INT (pr) = -1;
		return;
	}
	R_INT (pr) = Qtell (handles[h]);
}

static void
bi_Qflush (progs_t *pr)
{
	int         h = P_INT (pr, 0) - 1;

	if (h < 0 || h >= MAX_HANDLES || !handles[h]) {
		R_INT (pr) = -1;
		return;
	}
	R_INT (pr) = Qflush (handles[h]);
}

static void
bi_Qeof (progs_t *pr)
{
	int         h = P_INT (pr, 0) - 1;

	if (h < 0 || h >= MAX_HANDLES || !handles[h]) {
		R_INT (pr) = -1;
		return;
	}
	R_INT (pr) = Qeof (handles[h]);
}

static void
bi_Qfilesize (progs_t *pr)
{
	int         h = P_INT (pr, 0) - 1;

	if (h < 0 || h >= MAX_HANDLES || !handles[h]) {
		R_INT (pr) = -1;
		return;
	}
	R_INT (pr) = Qfilesize (handles[h]);
}

void
QFile_Progs_Init (progs_t *pr, int secure)
{
	if (secure) {
		PR_AddBuiltin (pr, "Qrename", secured, -1);
		PR_AddBuiltin (pr, "Qremove", secured, -1);
		PR_AddBuiltin (pr, "Qopen", secured, -1);
	} else {
		PR_AddBuiltin (pr, "Qrename", bi_Qrename, -1);
		PR_AddBuiltin (pr, "Qremove", bi_Qremove, -1);
		PR_AddBuiltin (pr, "Qopen", bi_Qopen, -1);
	}
	PR_AddBuiltin (pr, "Qclose", bi_Qclose, -1);
	PR_AddBuiltin (pr, "Qgetline", bi_Qgetline, -1);
	PR_AddBuiltin (pr, "Qread", bi_Qread, -1);
	PR_AddBuiltin (pr, "Qwrite", bi_Qwrite, -1);
	PR_AddBuiltin (pr, "Qputs", bi_Qputs, -1);
//	PR_AddBuiltin (pr, "Qgets", bi_Qgets, -1);
	PR_AddBuiltin (pr, "Qgetc", bi_Qgetc, -1);
	PR_AddBuiltin (pr, "Qputc", bi_Qputc, -1);
	PR_AddBuiltin (pr, "Qseek", bi_Qseek, -1);
	PR_AddBuiltin (pr, "Qtell", bi_Qtell, -1);
	PR_AddBuiltin (pr, "Qflush", bi_Qflush, -1);
	PR_AddBuiltin (pr, "Qeof", bi_Qeof, -1);
	PR_AddBuiltin (pr, "Qfilesize", bi_Qfilesize, -1);
}