games/hack/makedefs.c

   1 /* Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985. */
   2 /* makedefs.c - version 1.0.2 */
   3 /* $FreeBSD: src/games/hack/makedefs.c,v 1.4 1999/11/16 02:57:15 billf Exp $ */
   4 /* $DragonFly: src/games/hack/makedefs.c,v 1.3 2006/08/21 19:45:32 pavalos Exp $ */
   5
   6 #include <fcntl.h>
   7 #include <stdbool.h>
   8 #include <stdio.h>
   9 #include <stdlib.h>
  10 #include <string.h>
  11 #include <unistd.h>
  12
  13 /* construct definitions of object constants */
  14 #define LINSZ   1000
  15 #define STRSZ   40
  16
  17 int fd;
  18 char string[STRSZ];
  19
  20 static void     readline(void);
  21 static char     nextchar(void);
  22 static bool     skipuntil(const char *);
  23 static bool     getentry(void);
  24 static void     capitalize(char *);
  25 static bool     letter(char);
  26 static bool     digit(char);
  27
  28 int
  29 main(int argc, char **argv)
  30 {
  31 int idx = 0;
  32 int propct = 0;
  33 char *sp;
  34         if (argc != 2) {
  35                 fprintf(stderr, "usage: makedefs file\n");
  36                 exit(1);
  37         }
  38         if ((fd = open(argv[1], 0)) < 0) {
  39                 perror(argv[1]);
  40                 exit(1);
  41         }
  42         skipuntil("objects[] = {");
  43         while(getentry()) {
  44                 if(!*string){
  45                         idx++;
  46                         continue;
  47                 }
  48                 for(sp = string; *sp; sp++)
  49                         if(*sp == ' ' || *sp == '\t' || *sp == '-')
  50                                 *sp = '_';
  51                 if(!strncmp(string, "RIN_", 4)){
  52                         capitalize(string+4);
  53                         printf("#define %s      u.uprops[%d].p_flgs\n",
  54                                 string+4, propct++);
  55                 }
  56                 for(sp = string; *sp; sp++) capitalize(sp);
  57                 /* avoid trouble with stupid C preprocessors */
  58                 if(!strncmp(string, "WORTHLESS_PIECE_OF_", 19))
  59                         printf("/* #define %s   %d */\n", string, idx);
  60                 else
  61                         printf("#define %s      %d\n", string, idx);
  62                 idx++;
  63         }
  64         printf("\n#define       CORPSE  DEAD_HUMAN\n");
  65         printf("#define LAST_GEM        (JADE+1)\n");
  66         printf("#define LAST_RING       %d\n", propct);
  67         printf("#define NROFOBJECTS     %d\n", idx-1);
  68         exit(0);
  69 }
  70
  71 char line[LINSZ], *lp = line, *lp0 = line, *lpe = line;
  72 int eof;
  73
  74 static void
  75 readline(void)
  76 {
  77 int n = read(fd, lp0, (line+LINSZ)-lp0);
  78         if(n < 0){
  79                 printf("Input error.\n");
  80                 exit(1);
  81         }
  82         if(n == 0) eof++;
  83         lpe = lp0+n;
  84 }
  85
  86 static char
  87 nextchar(void)
  88 {
  89         if(lp == lpe){
  90                 readline();
  91                 lp = lp0;
  92         }
  93         return((lp == lpe) ? 0 : *lp++);
  94 }
  95
  96 static bool
  97 skipuntil(const char *s)
  98 {
  99 const char *sp0;
 100 char *sp1;
 101 loop:
 102         while(*s != nextchar())
 103                 if(eof) {
 104                         printf("Cannot skipuntil %s\n", s);
 105                         exit(1);
 106                 }
 107         if((int)strlen(s) > lpe-lp+1){
 108                 char *lp1, *lp2;
 109                 lp2 = lp;
 110                 lp1 = lp = lp0;
 111                 while(lp2 != lpe) *lp1++ = *lp2++;
 112                 lp2 = lp0;      /* save value */
 113                 lp0 = lp1;
 114                 readline();
 115                 lp0 = lp2;
 116                 if((int)strlen(s) > lpe-lp+1) {
 117                         printf("error in skipuntil");
 118                         exit(1);
 119                 }
 120         }
 121         sp0 = s+1;
 122         sp1 = lp;
 123         while(*sp0 && *sp0 == *sp1) sp0++, sp1++;
 124         if(!*sp0){
 125                 lp = sp1;
 126                 return(1);
 127         }
 128         goto loop;
 129 }
 130
 131 static bool
 132 getentry(void)
 133 {
 134 int inbraces = 0, inparens = 0, stringseen = 0, commaseen = 0;
 135 int prefix = 0;
 136 char ch;
 137 #define NSZ     10
 138 char identif[NSZ], *ip;
 139         string[0] = string[4] = 0;
 140         /* read until {...} or XXX(...) followed by ,
 141            skip comment and #define lines
 142            deliver 0 on failure
 143          */
 144         while(1) {
 145                 ch = nextchar();
 146         swi:
 147                 if(letter(ch)){
 148                         ip = identif;
 149                         do {
 150                                 if(ip < identif+NSZ-1) *ip++ = ch;
 151                                 ch = nextchar();
 152                         } while(letter(ch) || digit(ch));
 153                         *ip = 0;
 154                         while(ch == ' ' || ch == '\t') ch = nextchar();
 155                         if(ch == '(' && !inparens && !stringseen)
 156                                 if(!strcmp(identif, "WAND") ||
 157                                    !strcmp(identif, "RING") ||
 158                                    !strcmp(identif, "POTION") ||
 159                                    !strcmp(identif, "SCROLL"))
 160                                 strncpy(string, identif, 3),
 161                                 string[3] = '_',
 162                                 prefix = 4;
 163                 }
 164                 switch(ch) {
 165                 case '/':
 166                         /* watch for comment */
 167                         if((ch = nextchar()) == '*')
 168                                 skipuntil("*/");
 169                         goto swi;
 170                 case '{':
 171                         inbraces++;
 172                         continue;
 173                 case '(':
 174                         inparens++;
 175                         continue;
 176                 case '}':
 177                         inbraces--;
 178                         if(inbraces < 0) return(0);
 179                         continue;
 180                 case ')':
 181                         inparens--;
 182                         if(inparens < 0) {
 183                                 printf("too many ) ?");
 184                                 exit(1);
 185                         }
 186                         continue;
 187                 case '\n':
 188                         /* watch for #define at begin of line */
 189                         if((ch = nextchar()) == '#'){
 190                                 char pch;
 191                                 /* skip until '\n' not preceded by '\\' */
 192                                 do {
 193                                         pch = ch;
 194                                         ch = nextchar();
 195                                 } while(ch != '\n' || pch == '\\');
 196                                 continue;
 197                         }
 198                         goto swi;
 199                 case ',':
 200                         if(!inparens && !inbraces){
 201                                 if(prefix && !string[prefix])
 202                                         string[0] = 0;
 203                                 if(stringseen) return(1);
 204                                 printf("unexpected ,\n");
 205                                 exit(1);
 206                         }
 207                         commaseen++;
 208                         continue;
 209                 case '\'':
 210                         if((ch = nextchar()) == '\\') ch = nextchar();
 211                         if(nextchar() != '\''){
 212                                 printf("strange character denotation?\n");
 213                                 exit(1);
 214                         }
 215                         continue;
 216                 case '"':
 217                         {
 218                                 char *sp = string + prefix;
 219                                 char pch;
 220                                 int store = (inbraces || inparens)
 221                                         && !stringseen++ && !commaseen;
 222                                 do {
 223                                         pch = ch;
 224                                         ch = nextchar();
 225                                         if(store && sp < string+STRSZ)
 226                                                 *sp++ = ch;
 227                                 } while(ch != '"' || pch == '\\');
 228                                 if(store) *--sp = 0;
 229                                 continue;
 230                         }
 231                 }
 232         }
 233 }
 234
 235 static void
 236 capitalize(char *sp)
 237 {
 238         if('a' <= *sp && *sp <= 'z') *sp += 'A'-'a';
 239 }
 240
 241 static bool
 242 letter(char ch)
 243 {
 244         return( ('a' <= ch && ch <= 'z') ||
 245                 ('A' <= ch && ch <= 'Z') );
 246 }
 247
 248 static bool
 249 digit(char ch)
 250 {
 251         return( '0' <= ch && ch <= '9' );
 252 }