games/hack/hack.options.c

/* Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985. */
/* hack.options.c - version 1.0.3 */

#include "config.h"
#include "hack.h"
extern char *eos();

initoptions()
{
        register char *opts;
        extern char *getenv();

        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"))
                parseoptions(opts,TRUE);
}

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

        if(op = index(opts, ',')) {
                *op++ = 0;
                parseoptions(op, from_env);
        }
        if(op = index(opts, ' ')) {
                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)) {
                extern char plname[PL_NSIZ];
                if(!from_env) {
                  pline("The playername can be set only from HACKOPTIONS.");
                  return;
                }
                op = index(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 = index(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();
}

doset()
{
        char buf[BUFSZ];

        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) strcat(buf,"standout,");
            if(flags.nonull) (void) strcat(buf,"nonull,");
            if(flags.nonews) (void) strcat(buf,"nonews,");
            if(flags.time) (void) strcat(buf,"time,");
            if(flags.notombstone) (void) strcat(buf,"notombstone,");
            if(flags.no_rest_on_space)
                (void) strcat(buf,"!rest_on_space,");
            if(flags.end_top != 5 || flags.end_around != 4 || flags.end_own){
                (void) sprintf(eos(buf), "endgame: %u topscores/%u around me",
                        flags.end_top, flags.end_around);
                if(flags.end_own) (void) strcat(buf, "/own scores");
            } else {
                register char *eop = eos(buf);
                if(*--eop == ',') *eop = 0;
            }
            pline(buf);
        } else
            parseoptions(buf, FALSE);

        return(0);
}