1/*	$OpenBSD: hack.options.c,v 1.12 2016/01/09 18:33:15 mestre Exp $	*/
2
3/*
4 * Copyright (c) 1985, Stichting Centrum voor Wiskunde en Informatica,
5 * Amsterdam
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions are
10 * met:
11 *
12 * - Redistributions of source code must retain the above copyright notice,
13 * this list of conditions and the following disclaimer.
14 *
15 * - Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * - Neither the name of the Stichting Centrum voor Wiskunde en
20 * Informatica, nor the names of its contributors may be used to endorse or
21 * promote products derived from this software without specific prior
22 * written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
25 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
26 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
27 * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
28 * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
29 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
30 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
31 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
32 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
33 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
34 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
35 */
36
37/*
38 * Copyright (c) 1982 Jay Fenlason <hack@gnu.org>
39 * All rights reserved.
40 *
41 * Redistribution and use in source and binary forms, with or without
42 * modification, are permitted provided that the following conditions
43 * are met:
44 * 1. Redistributions of source code must retain the above copyright
45 *    notice, this list of conditions and the following disclaimer.
46 * 2. Redistributions in binary form must reproduce the above copyright
47 *    notice, this list of conditions and the following disclaimer in the
48 *    documentation and/or other materials provided with the distribution.
49 * 3. The name of the author may not be used to endorse or promote products
50 *    derived from this software without specific prior written permission.
51 *
52 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
53 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
54 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL
55 * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
56 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
57 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
58 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
59 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
60 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
61 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
62 */
63
64#include <ctype.h>
65#include <stdio.h>
66#include <stdlib.h>
67
68#include "hack.h"
69
70static void parseoptions(char *, boolean);
71
72void
73initoptions(void)
74{
75	char *opts;
76
77	flags.time = flags.nonews = flags.notombstone = flags.end_own =
78	flags.standout = flags.nonull = FALSE;
79	flags.no_rest_on_space = TRUE;
80	flags.invlet_constant = TRUE;
81	flags.end_top = 5;
82	flags.end_around = 4;
83	flags.female = FALSE;			/* players are usually male */
84
85	if ((opts = getenv("HACKOPTIONS")))
86		parseoptions(opts,TRUE);
87}
88
89static void
90parseoptions(char *opts, boolean from_env)
91{
92	char *op,*op2;
93	unsigned num;
94	boolean negated;
95
96	if ((op = strchr(opts, ','))) {
97		*op++ = 0;
98		parseoptions(op, from_env);
99	}
100	if ((op = strchr(opts, ' '))) {
101		op2 = op;
102		while(*op++)
103			if(*op != ' ') *op2++ = *op;
104	}
105	if (!*opts)
106		return;
107	negated = FALSE;
108	while((*opts == '!') || !strncmp(opts, "no", 2)) {
109		if(*opts == '!') opts++; else opts += 2;
110		negated = !negated;
111	}
112
113	if(!strncmp(opts,"standout",8)) {
114		flags.standout = !negated;
115		return;
116	}
117
118	if(!strncmp(opts,"null",3)) {
119		flags.nonull = negated;
120		return;
121	}
122
123	if(!strncmp(opts,"tombstone",4)) {
124		flags.notombstone = negated;
125		return;
126	}
127
128	if(!strncmp(opts,"news",4)) {
129		flags.nonews = negated;
130		return;
131	}
132
133	if(!strncmp(opts,"time",4)) {
134		flags.time = !negated;
135		flags.botl = 1;
136		return;
137	}
138
139	if(!strncmp(opts,"restonspace",4)) {
140		flags.no_rest_on_space = negated;
141		return;
142	}
143
144	if(!strncmp(opts,"fixinv",4)) {
145		if(from_env)
146			flags.invlet_constant = !negated;
147		else
148			pline("The fixinvlet option must be in HACKOPTIONS.");
149		return;
150	}
151
152	if(!strncmp(opts,"male",4)) {
153		flags.female = negated;
154		return;
155	}
156	if(!strncmp(opts,"female",6)) {
157		flags.female = !negated;
158		return;
159	}
160
161	/* name:string */
162	if(!strncmp(opts,"name",4)) {
163		extern char plname[PL_NSIZ];
164		if(!from_env) {
165		  pline("The playername can be set only from HACKOPTIONS.");
166		  return;
167		}
168		op = strchr(opts,':');
169		if(!op) goto bad;
170		(void) strlcpy(plname, op+1, sizeof(plname));
171		return;
172	}
173
174	/* endgame:5t[op] 5a[round] o[wn] */
175	if(!strncmp(opts,"endgame",3)) {
176		op = strchr(opts,':');
177		if(!op) goto bad;
178		op++;
179		while(*op) {
180			num = 1;
181			if(isdigit((unsigned char)*op)) {
182				num = atoi(op);
183				while(isdigit((unsigned char)*op)) op++;
184			} else
185			if(*op == '!') {
186				negated = !negated;
187				op++;
188			}
189			switch(*op) {
190			case 't':
191				flags.end_top = num;
192				break;
193			case 'a':
194				flags.end_around = num;
195				break;
196			case 'o':
197				flags.end_own = !negated;
198				break;
199			default:
200				goto bad;
201			}
202			while(letter(*++op)) ;
203			if(*op == '/') op++;
204		}
205		return;
206	}
207bad:
208	if(!from_env) {
209		if(!strncmp(opts, "help", 4)) {
210			pline("%s%s%s",
211"To set options use `HACKOPTIONS=\"<options>\"' in your environment, or ",
212"give the command 'O' followed by the line `<options>' while playing. ",
213"Here <options> is a list of <option>s separated by commas." );
214			pline("%s%s%s",
215"Simple (boolean) options are rest_on_space, news, time, ",
216"null, tombstone, (fe)male. ",
217"These can be negated by prefixing them with '!' or \"no\"." );
218			pline("%s",
219"A string option is name, as in HACKOPTIONS=\"name:Merlin-W\"." );
220			pline("%s%s%s",
221"A compound option is endgame; it is followed by a description of what ",
222"parts of the scorelist you want to see. You might for example say: ",
223"`endgame:own scores/5 top scores/4 around my score'." );
224			return;
225		}
226		pline("Bad option: %s.", opts);
227		pline("Type `O help<cr>' for help.");
228		return;
229	}
230	puts("Bad syntax in HACKOPTIONS.");
231	puts("Use for example:");
232	puts(
233"HACKOPTIONS=\"!restonspace,notombstone,endgame:own/5 topscorers/4 around me\""
234	);
235	getret();
236}
237
238int
239doset(void)
240{
241	char buf[BUFSZ];
242
243	pline("What options do you want to set? ");
244	getlin(buf);
245	if(!buf[0] || buf[0] == '\033') {
246	    (void) strlcpy(buf,"HACKOPTIONS=", sizeof buf);
247	    (void) strlcat(buf, flags.female ? "female," : "male,", sizeof buf);
248	    if(flags.standout) (void) strlcat(buf,"standout,", sizeof buf);
249	    if(flags.nonull) (void) strlcat(buf,"nonull,", sizeof buf);
250	    if(flags.nonews) (void) strlcat(buf,"nonews,", sizeof buf);
251	    if(flags.time) (void) strlcat(buf,"time,", sizeof buf);
252	    if(flags.notombstone) (void) strlcat(buf,"notombstone,", sizeof buf);
253	    if(flags.no_rest_on_space)
254		(void) strlcat(buf,"!rest_on_space,", sizeof buf);
255	    if(flags.end_top != 5 || flags.end_around != 4 || flags.end_own){
256		(void) snprintf(eos(buf), buf + sizeof buf - eos(buf),
257			"endgame: %u topscores/%u around me",
258			flags.end_top, flags.end_around);
259		if(flags.end_own) (void) strlcat(buf, "/own scores", sizeof buf);
260	    } else {
261		char *eop = eos(buf);
262		if(*--eop == ',') *eop = 0;
263	    }
264	    pline("%s", buf);
265	} else
266	    parseoptions(buf, FALSE);
267
268	return(0);
269}
270