1 /* Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985. */ 2 /* hack.rumors.c - version 1.0.3 */ 3 /* $FreeBSD: src/games/hack/hack.rumors.c,v 1.3 1999/11/16 02:57:10 billf Exp $ */ 4 5 #include <stdio.h> 6 #include "hack.h" /* for RUMORFILE and BSD (index) */ 7 #define CHARSZ 8 /* number of bits in a char */ 8 extern long *alloc(); 9 extern char *index(); 10 int n_rumors = 0; 11 int n_used_rumors = -1; 12 char *usedbits; 13 14 init_rumors(rumf) FILE *rumf; { 15 int i; 16 n_used_rumors = 0; 17 while(skipline(rumf)) n_rumors++; 18 rewind(rumf); 19 i = n_rumors/CHARSZ; 20 usedbits = (char *) alloc((unsigned)(i+1)); 21 for( ; i>=0; i--) usedbits[i] = 0; 22 } 23 24 skipline(rumf) FILE *rumf; { 25 char line[COLNO]; 26 while(1) { 27 if(!fgets(line, sizeof(line), rumf)) return(0); 28 if(index(line, '\n')) return(1); 29 } 30 } 31 32 outline(rumf) FILE *rumf; { 33 char line[COLNO]; 34 char *ep; 35 if(!fgets(line, sizeof(line), rumf)) return; 36 if((ep = index(line, '\n')) != 0) *ep = 0; 37 pline("This cookie has a scrap of paper inside! It reads: "); 38 pline(line); 39 } 40 41 outrumor(){ 42 int rn,i; 43 FILE *rumf; 44 if(n_rumors <= n_used_rumors || 45 (rumf = fopen(RUMORFILE, "r")) == (FILE *) 0) return; 46 if(n_used_rumors < 0) init_rumors(rumf); 47 if(!n_rumors) goto none; 48 rn = rn2(n_rumors - n_used_rumors); 49 i = 0; 50 while(rn || used(i)) { 51 (void) skipline(rumf); 52 if(!used(i)) rn--; 53 i++; 54 } 55 usedbits[i/CHARSZ] |= (1 << (i % CHARSZ)); 56 n_used_rumors++; 57 outline(rumf); 58 none: 59 (void) fclose(rumf); 60 } 61 62 used(i) int i; { 63 return(usedbits[i/CHARSZ] & (1 << (i % CHARSZ))); 64 } 65