93 lines
2.6 KiB
C
93 lines
2.6 KiB
C
/*
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* Empire - A multi-player, client/server Internet based war game.
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* Copyright (C) 1986-2004, Dave Pare, Jeff Bailey, Thomas Ruschak,
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* Ken Stevens, Steve McClure
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* ---
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*
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* See the "LEGAL", "LICENSE", "CREDITS" and "README" files for all the
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* related information and legal notices. It is expected that any future
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* projects/authors will amend these files as needed.
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*
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* ---
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*
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* mtch.c: Matching operations on structures and commands.
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*
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* Known contributors to this file:
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* (List known contributors to this file)
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*/
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/*
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* XXX These routines gamble that structures are all longword-aligned.
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* If this is not true, they will BREAK!
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*/
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#include "misc.h"
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#include "player.h"
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#include "com.h"
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#include "match.h"
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#include "prototypes.h"
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/*
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* find a matching integer from a member of a structure.
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* Inspired by stmtch above.
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*/
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int
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intmatch(register int value, register int *ptr, int size)
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{
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register int i;
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size /= sizeof(*ptr);
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for (i = 0; *ptr; i++, ptr += size)
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if (value == *ptr)
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return i;
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return -1;
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}
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/*
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* Search for COMMAND in COMS[], return its index.
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* Return M_NOTFOUND if there are no matches, M_NOTUNIQUE if there are
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* several, M_IGNORE if the command should be ignored.
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* Ignore commands that require more permissions than COMSTAT.
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*/
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int
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comtch(register s_char *command, struct cmndstr *coms, int comstat,
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int god)
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{
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register struct cmndstr *com;
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register int status;
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if (command == 0 || *command == 0)
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return M_IGNORE;
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status = M_NOTFOUND;
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for (com = coms; com->c_form != 0; com++) {
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if ((com->c_permit & comstat) != com->c_permit && !god)
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continue;
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switch (mineq(command, com->c_form)) {
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case ME_MISMATCH:
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break;
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case ME_PARTIAL:
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if (status >= 0)
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return M_NOTUNIQUE;
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status = com - coms;
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break;
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case ME_EXACT:
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return com - coms;
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}
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}
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return status;
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}
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