quakeforge/libs/util/qargs.c

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/*
qargs.c
command line argument processing routines
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
$Id$
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#ifdef HAVE_STRING_H
# include <string.h>
#endif
#ifdef HAVE_STRINGS_H
# include <strings.h>
#endif
#include <ctype.h>
#include <stdlib.h>
#include <assert.h>
#include "QF/console.h"
#include "QF/cmd.h"
#include "QF/crc.h"
#include "QF/qtypes.h"
#include "QF/sys.h"
static char **largv;
static char *argvdummy = " ";
static char *safeargvs[] =
{ "-stdvid", "-nolan", "-nosound", "-nocdaudio", "-nojoy", "-nomouse",
"-dibonly" };
#define NUM_SAFE_ARGVS (sizeof(safeargvs)/sizeof(safeargvs[0]))
int com_argc;
char **com_argv;
char *com_cmdline;
qboolean nouse = false; // 1999-10-29 +USE fix by Maddes
/*
COM_CheckParm
Returns the position (1 to argc-1) in the program's argument list
where the given parameter apears, or 0 if not present
*/
int
COM_CheckParm (char *parm)
{
int i;
for (i = 1; i < com_argc; i++) {
if (!com_argv[i])
continue; // NEXTSTEP sometimes clears appkit
// vars.
if (!strcmp (parm, com_argv[i]))
return i;
}
return 0;
}
void
COM_InitArgv (int argc, char **argv)
{
qboolean safe;
int i, len;
safe = false;
largv = (char **) calloc (1, (argc + NUM_SAFE_ARGVS + 1) *
sizeof (char **));
for (com_argc = 0, len = 0; com_argc < argc; com_argc++) {
largv[com_argc] = argv[com_argc];
if ((argv[com_argc]) && !strcmp ("-safe", argv[com_argc]))
safe = true;
if (com_argc)
len += strlen (argv[com_argc]) + 1;
}
com_cmdline = (char *) calloc (1, len + 1); // need strlen(com_cmdline)+2
com_cmdline[0] = 0;
if (len) {
for (i = 1; i < argc; i++) {
strncat (com_cmdline, argv[i], len - strlen (com_cmdline));
assert (len - strlen (com_cmdline) > 0);
strncat (com_cmdline, " ", len - strlen (com_cmdline));
}
com_cmdline[len - 1] = '\0';
}
if (safe) {
// force all the safe-mode switches. Note that we reserved extra space
// in case we need to add these, so we don't need an overflow check
for (i = 0; i < NUM_SAFE_ARGVS; i++) {
largv[com_argc] = safeargvs[i];
com_argc++;
}
}
largv[com_argc] = argvdummy;
com_argv = largv;
if (COM_CheckParm ("-nouse")) {
nouse = true;
}
}
/*
COM_AddParm
Adds the given string at the end of the current argument list
*/
void
COM_AddParm (char *parm)
{
largv[com_argc++] = parm;
}