Import of Empire 4.2.12
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src/lib/subs/sarg.c
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228
src/lib/subs/sarg.c
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/*
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* Empire - A multi-player, client/server Internet based war game.
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* Copyright (C) 1986-2000, 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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* sarg.c: Parse selection arguments
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*
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* Known contributors to this file:
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* Dave Pare, 1989
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*/
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#include <ctype.h>
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#include "misc.h"
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#include "player.h"
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#include "xy.h"
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#include "nsc.h"
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#include "sect.h"
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#include "nat.h"
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#include "deity.h"
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#include "file.h"
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#include "prototypes.h"
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#include "optlist.h"
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/*
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* returns one of
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*
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* #1, lx:ly,hx:hy --> NS_AREA
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* @x,y:dist --> NS_DIST
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* %d or %d/%d/%d --> NS_LIST
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* * --> NS_ALL
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*
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* or 0 for none of the above.
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*/
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int
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sarg_type(s_char *ptr)
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{
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int c;
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c = *ptr;
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if (c == '@')
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return NS_DIST;
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if (c == '*')
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return NS_ALL;
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if (c == '#' || index(ptr, ',') != 0)
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return NS_AREA;
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if (isdigit(c))
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return NS_LIST;
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if (c == '~' || isupper(c) || islower(c))
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return NS_GROUP;
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return 0;
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}
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int
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sarg_xy(s_char *ptr, coord *xp, coord *yp)
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{
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if (sarg_type(ptr) != NS_AREA)
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return 0;
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*xp = atoip(&ptr);
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if (*ptr++ != ',')
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return 0;
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if (!isdigit(*ptr) && *ptr != '-')
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return 0;
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*yp = atoi(ptr);
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inputxy(xp, yp, player->cnum);
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if ((*xp ^ *yp) & 01)
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return 0;
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return 1;
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}
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/* returns absolute coords */
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int
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sarg_getrange(s_char *buf, register struct range *rp)
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{
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register int rlm;
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register int c;
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struct natstr *np;
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s_char *bp;
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bp = buf;
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c = *bp;
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if (c == '#') {
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/*
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* realm #X where (X > 0 && X < MAXNOR)
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* Assumes realms are in abs coordinates
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*/
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bp++;
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rlm = atoi(bp);
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if (rlm < 0 || rlm >= MAXNOR)
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return 0;
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np = getnatp(player->cnum);
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rp->lx = np->nat_b[rlm].b_xl;
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rp->hx = np->nat_b[rlm].b_xh;
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rp->ly = np->nat_b[rlm].b_yl;
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rp->hy = np->nat_b[rlm].b_yh;
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} else {
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/*
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* full map specification
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* LX:LY,HX:HY where
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* ly, hy are optional.
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*/
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if (!isdigit(c) && c != '-')
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return 0;
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rp->lx = rp->hx = atoip(&bp);
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if (*bp == ':') {
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bp++;
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rp->hx = atoip(&bp);
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}
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if (*bp++ != ',')
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return 0;
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if (!isdigit(c) && c != '-')
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return 0;
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rp->ly = rp->hy = atoip(&bp);
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if (*bp == ':') {
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bp++;
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rp->hy = atoip(&bp);
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}
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inputxy(&rp->lx, &rp->ly, player->cnum);
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inputxy(&rp->hx, &rp->hy, player->cnum);
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}
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xysize_range(rp);
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return 1;
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}
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/*
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* translate #1 or lx:ly,hx:hy into
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* a result range struct
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*/
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int
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sarg_area(s_char *buf, register struct range *rp)
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{
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if (!sarg_getrange(buf, rp))
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return 0;
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rp->hx += 1;
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if (rp->hx >= WORLD_X)
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rp->hx = 0;
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rp->hy += 1;
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if (rp->hy >= WORLD_Y)
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rp->hy = 0;
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xysize_range(rp);
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return 1;
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}
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/*
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* translate @x,y:int into
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* result params
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*/
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int
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sarg_range(s_char *buf, coord *xp, coord *yp, int *dist)
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{
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s_char *bp;
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bp = buf;
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if (bp == 0 || *bp == 0)
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return 0;
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if (*bp++ != '@')
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return 0;
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*xp = atoip(&bp);
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if (*bp++ != ',')
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return 0;
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*yp = atoip(&bp);
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if (*bp++ != ':')
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return 0;
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inputxy(xp, yp, player->cnum);
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*dist = atoi(bp);
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return 1;
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}
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/*
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* list of idents; id/id/id/id/id
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*/
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int
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sarg_list(s_char *str, register int *list, int max)
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{
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register int i;
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register int j;
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register int n;
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s_char *arg;
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arg = str;
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for (i=0; i<max; i++) {
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if (!isdigit(*arg)) {
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pr("Illegal character '%c'\n", *arg);
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return 0;
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}
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n = atoip(&arg);
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for (j=0; j<i; j++) {
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if (list[j] == n)
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break;
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}
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if (j != i) {
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/* duplicate; ignore */
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i--;
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} else
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list[i] = n;
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if (*arg == 0)
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break;
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if (*arg != '/') {
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pr("Expecting '/', got '%c'\n", *arg);
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return 0;
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}
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arg++;
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if (*arg == 0)
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break;
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}
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return i + 1;
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}
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