games/hack/hack.options.c

   1 /* Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985. */
   2 /* hack.options.c - version 1.0.3 */
   3 /* $FreeBSD: src/games/hack/hack.options.c,v 1.5 1999/11/16 02:57:08 billf Exp $ */
   4
   5 #include "hack.h"
   6
   7 static void parseoptions(char *, bool);
   8
   9 void
  10 initoptions(void)
  11 {
  12         char *opts;
  13
  14         flags.time = flags.nonews = flags.notombstone = flags.end_own =
  15             flags.standout = flags.nonull = FALSE;
  16         flags.no_rest_on_space = TRUE;
  17         flags.invlet_constant = TRUE;
  18         flags.end_top = 5;
  19         flags.end_around = 4;
  20         flags.female = FALSE;   /* players are usually male */
  21
  22         if ((opts = getenv("HACKOPTIONS")))
  23                 parseoptions(opts,TRUE);
  24 }
  25
  26 static void
  27 parseoptions(char *opts, bool from_env)
  28 {
  29         char *op, *op2;
  30         unsigned num;
  31         boolean negated;
  32
  33         if ((op = strchr(opts, ',')) != NULL) {
  34                 *op++ = 0;
  35                 parseoptions(op, from_env);
  36         }
  37         if ((op = strchr(opts, ' ')) != NULL) {
  38                 op2 = op;
  39                 while (*op++)
  40                         if (*op != ' ')
  41                                 *op2++ = *op;
  42         }
  43         if (!*opts)
  44                 return;
  45         negated = FALSE;
  46         while ((*opts == '!') || !strncmp(opts, "no", 2)) {
  47                 if (*opts == '!')
  48                         opts++;
  49                 else
  50                         opts += 2;
  51                 negated = !negated;
  52         }
  53
  54         if (!strncmp(opts, "standout", 8)) {
  55                 flags.standout = !negated;
  56                 return;
  57         }
  58
  59         if (!strncmp(opts, "null", 3)) {
  60                 flags.nonull = negated;
  61                 return;
  62         }
  63
  64         if (!strncmp(opts, "tombstone", 4)) {
  65                 flags.notombstone = negated;
  66                 return;
  67         }
  68
  69         if (!strncmp(opts, "news", 4)) {
  70                 flags.nonews = negated;
  71                 return;
  72         }
  73
  74         if (!strncmp(opts, "time", 4)) {
  75                 flags.time = !negated;
  76                 flags.botl = 1;
  77                 return;
  78         }
  79
  80         if (!strncmp(opts, "restonspace", 4)) {
  81                 flags.no_rest_on_space = negated;
  82                 return;
  83         }
  84
  85         if (!strncmp(opts, "fixinv", 4)) {
  86                 if (from_env)
  87                         flags.invlet_constant = !negated;
  88                 else
  89                         pline("The fixinvlet option must be in HACKOPTIONS.");
  90                 return;
  91         }
  92
  93         if (!strncmp(opts, "male", 4)) {
  94                 flags.female = negated;
  95                 return;
  96         }
  97         if (!strncmp(opts, "female", 6)) {
  98                 flags.female = !negated;
  99                 return;
 100         }
 101
 102         /* name:string */
 103         if (!strncmp(opts, "name", 4)) {
 104                 if (!from_env) {
 105                         pline("The playername can be set only from HACKOPTIONS.");
 106                         return;
 107                 }
 108                 op = strchr(opts, ':');
 109                 if (!op)
 110                         goto bad;
 111                 strncpy(plname, op + 1, sizeof(plname) - 1);
 112                 return;
 113         }
 114
 115         /* endgame:5t[op] 5a[round] o[wn] */
 116         if (!strncmp(opts, "endgame", 3)) {
 117                 op = strchr(opts, ':');
 118                 if (!op)
 119                         goto bad;
 120                 op++;
 121                 while (*op) {
 122                         num = 1;
 123                         if (digit(*op)) {
 124                                 num = atoi(op);
 125                                 while (digit(*op))
 126                                         op++;
 127                         } else if (*op == '!') {
 128                                 negated = !negated;
 129                                 op++;
 130                         }
 131                         switch (*op) {
 132                         case 't':
 133                                 flags.end_top = num;
 134                                 break;
 135                         case 'a':
 136                                 flags.end_around = num;
 137                                 break;
 138                         case 'o':
 139                                 flags.end_own = !negated;
 140                                 break;
 141                         default:
 142                                 goto bad;
 143                         }
 144                         while (letter(*++op))
 145                                 ; /* nothing */
 146                         if (*op == '/')
 147                                 op++;
 148                 }
 149                 return;
 150         }
 151 bad:
 152         if (!from_env) {
 153                 if (!strncmp(opts, "help", 4)) {
 154                         pline("%s%s%s",
 155                             "To set options use `HACKOPTIONS=\"<options>\"' in your environment, or ",
 156                             "give the command 'o' followed by the line `<options>' while playing. ",
 157                             "Here <options> is a list of <option>s separated by commas.");
 158                         pline("%s%s%s",
 159                             "Simple (boolean) options are rest_on_space, news, time, ",
 160                             "null, tombstone, (fe)male. ",
 161                             "These can be negated by prefixing them with '!' or \"no\".");
 162                         pline("%s",
 163                             "A string option is name, as in HACKOPTIONS=\"name:Merlin-W\".");
 164                         pline("%s%s%s",
 165                             "A compound option is endgame; it is followed by a description of what ",
 166                             "parts of the scorelist you want to see. You might for example say: ",
 167                             "`endgame:own scores/5 top scores/4 around my score'.");
 168                         return;
 169                 }
 170                 pline("Bad option: %s.", opts);
 171                 pline("Type `o help<cr>' for help.");
 172                 return;
 173         }
 174         puts("Bad syntax in HACKOPTIONS.");
 175         puts("Use for example:");
 176         puts("HACKOPTIONS=\"!restonspace,notombstone,endgame:own/5 topscorers/4 around me\"");
 177         getret();
 178 }
 179
 180 int
 181 doset(void)
 182 {
 183         char buf[BUFSZ];
 184
 185         pline("What options do you want to set? ");
 186         getlin(buf);
 187         if (!buf[0] || buf[0] == '\033') {
 188                 strcpy(buf, "HACKOPTIONS=");
 189                 strcat(buf, flags.female ? "female," : "male,");
 190                 if (flags.standout)
 191                         strcat(buf, "standout,");
 192                 if (flags.nonull)
 193                         strcat(buf, "nonull,");
 194                 if (flags.nonews)
 195                         strcat(buf, "nonews,");
 196                 if (flags.time)
 197                         strcat(buf, "time,");
 198                 if (flags.notombstone)
 199                         strcat(buf, "notombstone,");
 200                 if (flags.no_rest_on_space)
 201                         strcat(buf, "!rest_on_space,");
 202                 if (flags.end_top != 5 || flags.end_around != 4 || flags.end_own) {
 203                         sprintf(eos(buf), "endgame: %u topscores/%u around me",
 204                             flags.end_top, flags.end_around);
 205                         if (flags.end_own)
 206                                 strcat(buf, "/own scores");
 207                 } else {
 208                         char *eop = eos(buf);
 209                         if (*--eop == ',')
 210                                 *eop = 0;
 211                 }
 212                 pline("%s", buf);
 213         } else
 214                 parseoptions(buf, FALSE);
 215
 216         return (0);
 217 }