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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/common/stmtch.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.
*
* ---
*
* stmtch.c: Matching operations on structures and commands
*
* 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 "match.h"
#include "common.h"
/*
* find a matching string from a member string pointer
* in a structure "str". Pointer is incremented by
* the (passed) size of the structure.
*/
int
stmtch(register s_char *obj, s_char *base, int off, int size)
{
register s_char *str;
register int stat2;
register int i;
register int n;
stat2 = M_NOTFOUND;
str = base + off;
for (i=0; *(s_char **)str; i++, str += size) {
if ((n = mineq(obj, *(s_char **)str)) == ME_MISMATCH)
continue;
if (n == ME_EXACT)
return i;
if (stat2 != M_NOTFOUND)
return M_NOTUNIQUE;
stat2 = i;
}
return stat2;
}
/*
* do partial match comparison.
*/
int
mineq(register s_char *a, register s_char *b)
{
do {
if (*a++ != *b++)
return ME_MISMATCH;
} while (*b != ' ' && *a != 0);
if (*a == 0 && (*b == ' ' || *b == 0))
return ME_EXACT;
return ME_PARTIAL;
}