1/*	$NetBSD: hack.options.c,v 1.10 2009/08/12 07:28:41 dholland 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 <sys/cdefs.h>
65#ifndef lint
66__RCSID("$NetBSD: hack.options.c,v 1.10 2009/08/12 07:28:41 dholland Exp $");
67#endif				/* not lint */
68
69#include <stdlib.h>
70#include <unistd.h>
71#include "hack.h"
72#include "extern.h"
73
74static void parseoptions(char *, boolean);
75
76void
77initoptions(void)
78{
79	char           *opts;
80
81	flags.time = flags.nonews = flags.notombstone = flags.end_own =
82		flags.standout = flags.nonull = FALSE;
83	flags.no_rest_on_space = TRUE;
84	flags.invlet_constant = TRUE;
85	flags.end_top = 5;
86	flags.end_around = 4;
87	flags.female = FALSE;	/* players are usually male */
88
89	if ((opts = getenv("HACKOPTIONS")) != NULL)
90		parseoptions(opts, TRUE);
91}
92
93static void
94parseoptions(char *opts, boolean from_env)
95{
96	char           *op, *op2;
97	unsigned        num;
98	boolean         negated;
99
100	if ((op = strchr(opts, ',')) != NULL) {
101		*op++ = 0;
102		parseoptions(op, from_env);
103	}
104	if ((op = strchr(opts, ' ')) != NULL) {
105		op2 = op;
106		while (*op++)
107			if (*op != ' ')
108				*op2++ = *op;
109	}
110	if (!*opts)
111		return;
112	negated = FALSE;
113	while ((*opts == '!') || !strncmp(opts, "no", 2)) {
114		if (*opts == '!')
115			opts++;
116		else
117			opts += 2;
118		negated = !negated;
119	}
120
121	if (!strncmp(opts, "standout", 8)) {
122		flags.standout = !negated;
123		return;
124	}
125	if (!strncmp(opts, "null", 3)) {
126		flags.nonull = negated;
127		return;
128	}
129	if (!strncmp(opts, "tombstone", 4)) {
130		flags.notombstone = negated;
131		return;
132	}
133	if (!strncmp(opts, "news", 4)) {
134		flags.nonews = negated;
135		return;
136	}
137	if (!strncmp(opts, "time", 4)) {
138		flags.time = !negated;
139		flags.botl = 1;
140		return;
141	}
142	if (!strncmp(opts, "restonspace", 4)) {
143		flags.no_rest_on_space = negated;
144		return;
145	}
146	if (!strncmp(opts, "fixinv", 4)) {
147		if (from_env)
148			flags.invlet_constant = !negated;
149		else
150			pline("The fixinvlet option must be in HACKOPTIONS.");
151		return;
152	}
153	if (!strncmp(opts, "male", 4)) {
154		flags.female = negated;
155		return;
156	}
157	if (!strncmp(opts, "female", 6)) {
158		flags.female = !negated;
159		return;
160	}
161	/* name:string */
162	if (!strncmp(opts, "name", 4)) {
163		if (!from_env) {
164			pline("The playername can be set only from HACKOPTIONS.");
165			return;
166		}
167		op = strchr(opts, ':');
168		if (!op)
169			goto bad;
170		(void) strncpy(plname, op + 1, sizeof(plname) - 1);
171		return;
172	}
173	/* endgame:5t[op] 5a[round] o[wn] */
174	if (!strncmp(opts, "endgame", 3)) {
175		op = strchr(opts, ':');
176		if (!op)
177			goto bad;
178		op++;
179		while (*op) {
180			num = 1;
181			if (digit(*op)) {
182				num = atoi(op);
183				while (digit(*op))
184					op++;
185			} else 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 == '/')
204				op++;
205		}
206		return;
207	}
208bad:
209	if (!from_env) {
210		if (!strncmp(opts, "help", 4)) {
211			pline("%s%s%s",
212			      "To set options use `HACKOPTIONS=\"<options>\"' in your environment, or ",
213			      "give the command 'O' followed by the line `<options>' while playing. ",
214			      "Here <options> is a list of <option>s separated by commas.");
215			pline("%s%s%s",
216			      "Simple (boolean) options are rest_on_space, news, time, ",
217			      "null, tombstone, (fe)male. ",
218			      "These can be negated by prefixing them with '!' or \"no\".");
219			pline("%s",
220			      "A string option is name, as in HACKOPTIONS=\"name:Merlin-W\".");
221			pline("%s%s%s",
222			      "A compound option is endgame; it is followed by a description of what ",
223			      "parts of the scorelist you want to see. You might for example say: ",
224			      "`endgame:own scores/5 top scores/4 around my score'.");
225			return;
226		}
227		pline("Bad option: %s.", opts);
228		pline("Type `O help<cr>' for help.");
229		return;
230	}
231	puts("Bad syntax in HACKOPTIONS.");
232	puts("Use for example:");
233	puts(
234	     "HACKOPTIONS=\"!restonspace,notombstone,endgame:own/5 topscorers/4 around me\""
235		);
236	getret();
237}
238
239int
240doset(void)
241{
242	char buf[BUFSZ];
243	size_t pos;
244
245	pline("What options do you want to set? ");
246	getlin(buf);
247	if (!buf[0] || buf[0] == '\033') {
248		(void) strcpy(buf, "HACKOPTIONS=");
249		(void) strcat(buf, flags.female ? "female," : "male,");
250		if (flags.standout)
251			(void) strlcat(buf, "standout,", sizeof(buf));
252		if (flags.nonull)
253			(void) strlcat(buf, "nonull,", sizeof(buf));
254		if (flags.nonews)
255			(void) strlcat(buf, "nonews,", sizeof(buf));
256		if (flags.time)
257			(void) strlcat(buf, "time,", sizeof(buf));
258		if (flags.notombstone)
259			(void) strlcat(buf, "notombstone,", sizeof(buf));
260		if (flags.no_rest_on_space)
261			(void) strlcat(buf, "!rest_on_space,", sizeof(buf));
262		if (flags.end_top != 5 || flags.end_around != 4 || flags.end_own) {
263			pos = strlen(buf);
264			(void) snprintf(buf+pos, sizeof(buf)-pos,
265				       "endgame: %u topscores/%u around me",
266				       flags.end_top, flags.end_around);
267			if (flags.end_own)
268				(void) strlcat(buf, "/own scores", sizeof(buf));
269		} else {
270			char           *eop = eos(buf);
271			if (*--eop == ',')
272				*eop = 0;
273		}
274		pline("%s", buf);
275	} else
276		parseoptions(buf, FALSE);
277
278	return (0);
279}
280