/*      $NetBSD: hack.options.c,v 1.11 2011/05/23 22:53:25 joerg Exp $  */

/*
 * Copyright (c) 1985, Stichting Centrum voor Wiskunde en Informatica,
 * Amsterdam
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 * - Redistributions of source code must retain the above copyright notice,
 * this list of conditions and the following disclaimer.
 *
 * - Redistributions in binary form must reproduce the above copyright
 * notice, this list of conditions and the following disclaimer in the
 * documentation and/or other materials provided with the distribution.
 *
 * - Neither the name of the Stichting Centrum voor Wiskunde en
 * Informatica, nor the names of its contributors may be used to endorse or
 * promote products derived from this software without specific prior
 * written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
 * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
 * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

/*
 * Copyright (c) 1982 Jay Fenlason <hack@gnu.org>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL
 * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include <sys/cdefs.h>
#ifndef lint
__RCSID("$NetBSD: hack.options.c,v 1.11 2011/05/23 22:53:25 joerg Exp $");
#endif                          /* not lint */

#include <stdlib.h>
#include <unistd.h>
#include "hack.h"
#include "extern.h"

static void parseoptions(char *, boolean);

void
initoptions(void)
{
        char           *opts;

        flags.time = flags.nonews = flags.notombstone = flags.end_own =
                flags.standout = flags.nonull = FALSE;
        flags.no_rest_on_space = TRUE;
        flags.invlet_constant = TRUE;
        flags.end_top = 5;
        flags.end_around = 4;
        flags.female = FALSE;   /* players are usually male */

        if ((opts = getenv("HACKOPTIONS")) != NULL)
                parseoptions(opts, TRUE);
}

static void
parseoptions(char *opts, boolean from_env)
{
        char           *op, *op2;
        unsigned        num;
        boolean         negated;

        if ((op = strchr(opts, ',')) != NULL) {
                *op++ = 0;
                parseoptions(op, from_env);
        }
        if ((op = strchr(opts, ' ')) != NULL) {
                op2 = op;
                while (*op++)
                        if (*op != ' ')
                                *op2++ = *op;
        }
        if (!*opts)
                return;
        negated = FALSE;
        while ((*opts == '!') || !strncmp(opts, "no", 2)) {
                if (*opts == '!')
                        opts++;
                else
                        opts += 2;
                negated = !negated;
        }

        if (!strncmp(opts, "standout", 8)) {
                flags.standout = !negated;
                return;
        }
        if (!strncmp(opts, "null", 3)) {
                flags.nonull = negated;
                return;
        }
        if (!strncmp(opts, "tombstone", 4)) {
                flags.notombstone = negated;
                return;
        }
        if (!strncmp(opts, "news", 4)) {
                flags.nonews = negated;
                return;
        }
        if (!strncmp(opts, "time", 4)) {
                flags.time = !negated;
                flags.botl = 1;
                return;
        }
        if (!strncmp(opts, "restonspace", 4)) {
                flags.no_rest_on_space = negated;
                return;
        }
        if (!strncmp(opts, "fixinv", 4)) {
                if (from_env)
                        flags.invlet_constant = !negated;
                else
                        pline("The fixinvlet option must be in HACKOPTIONS.");
                return;
        }
        if (!strncmp(opts, "male", 4)) {
                flags.female = negated;
                return;
        }
        if (!strncmp(opts, "female", 6)) {
                flags.female = !negated;
                return;
        }
        /* name:string */
        if (!strncmp(opts, "name", 4)) {
                if (!from_env) {
                        pline("The playername can be set only from HACKOPTIONS.");
                        return;
                }
                op = strchr(opts, ':');
                if (!op)
                        goto bad;
                (void) strncpy(plname, op + 1, sizeof(plname) - 1);
                return;
        }
        /* endgame:5t[op] 5a[round] o[wn] */
        if (!strncmp(opts, "endgame", 3)) {
                op = strchr(opts, ':');
                if (!op)
                        goto bad;
                op++;
                while (*op) {
                        num = 1;
                        if (digit(*op)) {
                                num = atoi(op);
                                while (digit(*op))
                                        op++;
                        } else if (*op == '!') {
                                negated = !negated;
                                op++;
                        }
                        switch (*op) {
                        case 't':
                                flags.end_top = num;
                                break;
                        case 'a':
                                flags.end_around = num;
                                break;
                        case 'o':
                                flags.end_own = !negated;
                                break;
                        default:
                                goto bad;
                        }
                        while (letter(*++op));
                        if (*op == '/')
                                op++;
                }
                return;
        }
bad:
        if (!from_env) {
                if (!strncmp(opts, "help", 4)) {
                        pline("%s%s%s",
                              "To set options use `HACKOPTIONS=\"<options>\"' in your environment, or ",
                              "give the command 'O' followed by the line `<options>' while playing. ",
                              "Here <options> is a list of <option>s separated by commas.");
                        pline("%s%s%s",
                              "Simple (boolean) options are rest_on_space, news, time, ",
                              "null, tombstone, (fe)male. ",
                              "These can be negated by prefixing them with '!' or \"no\".");
                        pline("%s",
                              "A string option is name, as in HACKOPTIONS=\"name:Merlin-W\".");
                        pline("%s%s%s",
                              "A compound option is endgame; it is followed by a description of what ",
                              "parts of the scorelist you want to see. You might for example say: ",
                              "`endgame:own scores/5 top scores/4 around my score'.");
                        return;
                }
                pline("Bad option: %s.", opts);
                pline("Type `O help<cr>' for help.");
                return;
        }
        puts("Bad syntax in HACKOPTIONS.");
        puts("Use for example:");
        puts(
             "HACKOPTIONS=\"!restonspace,notombstone,endgame:own/5 topscorers/4 around me\""
                );
        getret();
}

int
doset(void)
{
        char buf[BUFSZ];
        size_t pos;

        pline("What options do you want to set? ");
        getlin(buf);
        if (!buf[0] || buf[0] == '\033') {
                (void) strcpy(buf, "HACKOPTIONS=");
                (void) strcat(buf, flags.female ? "female," : "male,");
                if (flags.standout)
                        (void) strlcat(buf, "standout,", sizeof(buf));
                if (flags.nonull)
                        (void) strlcat(buf, "nonull,", sizeof(buf));
                if (flags.nonews)
                        (void) strlcat(buf, "nonews,", sizeof(buf));
                if (flags.time)
                        (void) strlcat(buf, "time,", sizeof(buf));
                if (flags.notombstone)
                        (void) strlcat(buf, "notombstone,", sizeof(buf));
                if (flags.no_rest_on_space)
                        (void) strlcat(buf, "!rest_on_space,", sizeof(buf));
                if (flags.end_top != 5 || flags.end_around != 4 || flags.end_own) {
                        pos = strlen(buf);
                        (void) snprintf(buf+pos, sizeof(buf)-pos,
                                       "endgame: %u topscores/%u around me",
                                       flags.end_top, flags.end_around);
                        if (flags.end_own)
                                (void) strlcat(buf, "/own scores", sizeof(buf));
                } else {
                        char           *eop = eos(buf);
                        if (*--eop == ',')
                                *eop = 0;
                }
                pline("%s", buf);
        } else
                parseoptions(buf, FALSE);

        return (0);
}