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Import of Empire 4.2.12

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Markus Armbruster 2003-08-23 12:23:04 +00:00
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src/lib/subs/mtch.c Normal file
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/*
* Empire - A multi-player, client/server Internet based war game.
* Copyright (C) 1986-2000, Dave Pare, Jeff Bailey, Thomas Ruschak,
* Ken Stevens, Steve McClure
*
* 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
*
* ---
*
* See the "LEGAL", "LICENSE", "CREDITS" and "README" files for all the
* related information and legal notices. It is expected that any future
* projects/authors will amend these files as needed.
*
* ---
*
* mtch.c: Matching operations on structures and commands.
*
* Known contributors to this file:
* (List known contributors to this file)
*/
/*
* XXX These routines gamble that structures are all longword-aligned.
* If this is not true, they will BREAK!
*/
#include "misc.h"
#include "player.h"
#include "com.h"
#include "deity.h"
#include "match.h"
#include "prototypes.h"
/*
* find a matching integer from a member of a structure.
* Inspired by stmtch above.
*/
int
intmatch(register int value, register int *ptr, int size)
{
register int i;
size /= sizeof(*ptr);
for (i=0; *ptr; i++, ptr += size)
if (value == *ptr)
return i;
return -1;
}
/*
* find a matching command from coms[]. Return status is:
* >= 0: match found, value is array entry in coms[]
*/
int
comtch(register s_char *command, struct cmndstr *coms, int comstat, int god)
{
register struct cmndstr *com;
register int status;
register int i;
if (command == 0 || *command == 0)
return M_IGNORE;
status = M_NOTFOUND;
for (com=coms; com->c_form != 0; com++) {
if ((com->c_permit & comstat) != com->c_permit && !god)
continue;
if ((i = mineq(command, com->c_form)) == ME_MISMATCH)
continue;
if (i == ME_EXACT)
return com - coms;
/* partial */
if (status != M_NOTFOUND)
return M_NOTUNIQUE;
status = com - coms;
}
return status;
}