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 /* $DragonFly: src/games/hack/hack.options.c,v 1.3 2006/08/21 19:45:32 pavalos Exp $ */
   5
   6 #include "hack.h"
   7
   8 static void parseoptions(char *, bool);
   9
  10 void
  11 initoptions(void)
  12 {
  13         char *opts;
  14
  15         flags.time = flags.nonews = flags.notombstone = flags.end_own =
  16             flags.standout = flags.nonull = FALSE;
  17         flags.no_rest_on_space = TRUE;
  18         flags.invlet_constant = TRUE;
  19         flags.end_top = 5;
  20         flags.end_around = 4;
  21         flags.female = FALSE;   /* players are usually male */
  22
  23         if ((opts = getenv("HACKOPTIONS")))
  24                 parseoptions(opts,TRUE);
  25 }
  26
  27 static void
  28 parseoptions(char *opts, bool from_env)
  29 {
  30         char *op, *op2;
  31         unsigned num;
  32         boolean negated;
  33
  34         if ((op = strchr(opts, ',')) != NULL) {
  35                 *op++ = 0;
  36                 parseoptions(op, from_env);
  37         }
  38         if ((op = strchr(opts, ' ')) != NULL) {
  39                 op2 = op;
  40                 while (*op++)
  41                         if (*op != ' ')
  42                                 *op2++ = *op;
  43         }
  44         if (!*opts)
  45                 return;
  46         negated = FALSE;
  47         while ((*opts == '!') || !strncmp(opts, "no", 2)) {
  48                 if (*opts == '!')
  49                         opts++;
  50                 else
  51                         opts += 2;
  52                 negated = !negated;
  53         }
  54
  55         if (!strncmp(opts, "standout", 8)) {
  56                 flags.standout = !negated;
  57                 return;
  58         }
  59
  60         if (!strncmp(opts, "null", 3)) {
  61                 flags.nonull = negated;
  62                 return;
  63         }
  64
  65         if (!strncmp(opts, "tombstone", 4)) {
  66                 flags.notombstone = negated;
  67                 return;
  68         }
  69
  70         if (!strncmp(opts, "news", 4)) {
  71                 flags.nonews = negated;
  72                 return;
  73         }
  74
  75         if (!strncmp(opts, "time", 4)) {
  76                 flags.time = !negated;
  77                 flags.botl = 1;
  78                 return;
  79         }
  80
  81         if (!strncmp(opts, "restonspace", 4)) {
  82                 flags.no_rest_on_space = negated;
  83                 return;
  84         }
  85
  86         if (!strncmp(opts, "fixinv", 4)) {
  87                 if (from_env)
  88                         flags.invlet_constant = !negated;
  89                 else
  90                         pline("The fixinvlet option must be in HACKOPTIONS.");
  91                 return;
  92         }
  93
  94         if (!strncmp(opts, "male", 4)) {
  95                 flags.female = negated;
  96                 return;
  97         }
  98         if (!strncmp(opts, "female", 6)) {
  99                 flags.female = !negated;
 100                 return;
 101         }
 102
 103         /* name:string */
 104         if (!strncmp(opts, "name", 4)) {
 105                 if (!from_env) {
 106                         pline("The playername can be set only from HACKOPTIONS.");
 107                         return;
 108                 }
 109                 op = strchr(opts, ':');
 110                 if (!op)
 111                         goto bad;
 112                 strncpy(plname, op + 1, sizeof(plname) - 1);
 113                 return;
 114         }
 115
 116         /* endgame:5t[op] 5a[round] o[wn] */
 117         if (!strncmp(opts, "endgame", 3)) {
 118                 op = strchr(opts, ':');
 119                 if (!op)
 120                         goto bad;
 121                 op++;
 122                 while (*op) {
 123                         num = 1;
 124                         if (digit(*op)) {
 125                                 num = atoi(op);
 126                                 while (digit(*op))
 127                                         op++;
 128                         } else if (*op == '!') {
 129                                 negated = !negated;
 130                                 op++;
 131                         }
 132                         switch (*op) {
 133                         case 't':
 134                                 flags.end_top = num;
 135                                 break;
 136                         case 'a':
 137                                 flags.end_around = num;
 138                                 break;
 139                         case 'o':
 140                                 flags.end_own = !negated;
 141                                 break;
 142                         default:
 143                                 goto bad;
 144                         }
 145                         while (letter(*++op))
 146                                 ; /* nothing */
 147                         if (*op == '/')
 148                                 op++;
 149                 }
 150                 return;
 151         }
 152 bad:
 153         if (!from_env) {
 154                 if (!strncmp(opts, "help", 4)) {
 155                         pline("%s%s%s",
 156                             "To set options use `HACKOPTIONS=\"<options>\"' in your environment, or ",
 157                             "give the command 'o' followed by the line `<options>' while playing. ",
 158                             "Here <options> is a list of <option>s separated by commas.");
 159                         pline("%s%s%s",
 160                             "Simple (boolean) options are rest_on_space, news, time, ",
 161                             "null, tombstone, (fe)male. ",
 162                             "These can be negated by prefixing them with '!' or \"no\".");
 163                         pline("%s",
 164                             "A string option is name, as in HACKOPTIONS=\"name:Merlin-W\".");
 165                         pline("%s%s%s",
 166                             "A compound option is endgame; it is followed by a description of what ",
 167                             "parts of the scorelist you want to see. You might for example say: ",
 168                             "`endgame:own scores/5 top scores/4 around my score'.");
 169                         return;
 170                 }
 171                 pline("Bad option: %s.", opts);
 172                 pline("Type `o help<cr>' for help.");
 173                 return;
 174         }
 175         puts("Bad syntax in HACKOPTIONS.");
 176         puts("Use for example:");
 177         puts("HACKOPTIONS=\"!restonspace,notombstone,endgame:own/5 topscorers/4 around me\"");
 178         getret();
 179 }
 180
 181 int
 182 doset(void)
 183 {
 184         char buf[BUFSZ];
 185
 186         pline("What options do you want to set? ");
 187         getlin(buf);
 188         if (!buf[0] || buf[0] == '\033') {
 189                 strcpy(buf, "HACKOPTIONS=");
 190                 strcat(buf, flags.female ? "female," : "male,");
 191                 if (flags.standout)
 192                         strcat(buf, "standout,");
 193                 if (flags.nonull)
 194                         strcat(buf, "nonull,");
 195                 if (flags.nonews)
 196                         strcat(buf, "nonews,");
 197                 if (flags.time)
 198                         strcat(buf, "time,");
 199                 if (flags.notombstone)
 200                         strcat(buf, "notombstone,");
 201                 if (flags.no_rest_on_space)
 202                         strcat(buf, "!rest_on_space,");
 203                 if (flags.end_top != 5 || flags.end_around != 4 || flags.end_own) {
 204                         sprintf(eos(buf), "endgame: %u topscores/%u around me",
 205                             flags.end_top, flags.end_around);
 206                         if (flags.end_own)
 207                                 strcat(buf, "/own scores");
 208                 } else {
 209                         char *eop = eos(buf);
 210                         if (*--eop == ',')
 211                                 *eop = 0;
 212                 }
 213                 pline(buf);
 214         } else
 215                 parseoptions(buf, FALSE);
 216
 217         return (0);
 218 }