freebsd-src/games/hack/hack.rumors.c
Jordan K. Hubbard 554eb505f8 Bring in the 4.4 Lite games directory, modulo man page changes and segregation
of the x11 based games.  I'm not going to tag the originals with bsd_44_lite
and do this in two stages since it's just not worth it for this collection,
and I've got directory renames to deal with that way.  Bleah.
Submitted by:	jkh
1994-09-04 04:03:31 +00:00

64 lines
1.5 KiB
C

/* Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985. */
/* hack.rumors.c - version 1.0.3 */
#include <stdio.h>
#include "hack.h" /* for RUMORFILE and BSD (index) */
#define CHARSZ 8 /* number of bits in a char */
extern long *alloc();
extern char *index();
int n_rumors = 0;
int n_used_rumors = -1;
char *usedbits;
init_rumors(rumf) register FILE *rumf; {
register int i;
n_used_rumors = 0;
while(skipline(rumf)) n_rumors++;
rewind(rumf);
i = n_rumors/CHARSZ;
usedbits = (char *) alloc((unsigned)(i+1));
for( ; i>=0; i--) usedbits[i] = 0;
}
skipline(rumf) register FILE *rumf; {
char line[COLNO];
while(1) {
if(!fgets(line, sizeof(line), rumf)) return(0);
if(index(line, '\n')) return(1);
}
}
outline(rumf) register FILE *rumf; {
char line[COLNO];
register char *ep;
if(!fgets(line, sizeof(line), rumf)) return;
if((ep = index(line, '\n')) != 0) *ep = 0;
pline("This cookie has a scrap of paper inside! It reads: ");
pline(line);
}
outrumor(){
register int rn,i;
register FILE *rumf;
if(n_rumors <= n_used_rumors ||
(rumf = fopen(RUMORFILE, "r")) == (FILE *) 0) return;
if(n_used_rumors < 0) init_rumors(rumf);
if(!n_rumors) goto none;
rn = rn2(n_rumors - n_used_rumors);
i = 0;
while(rn || used(i)) {
(void) skipline(rumf);
if(!used(i)) rn--;
i++;
}
usedbits[i/CHARSZ] |= (1 << (i % CHARSZ));
n_used_rumors++;
outline(rumf);
none:
(void) fclose(rumf);
}
used(i) register int i; {
return(usedbits[i/CHARSZ] & (1 << (i % CHARSZ)));
}