X-Git-Url: https://git.cameronkatri.com/bsdgames-darwin.git/blobdiff_plain/77e3814f0c0e3dea4d0032e25666f77e6f83bfff..5a1c62c6b8c4c4c2fa8649ae49a04e2ba5ef2c33:/fish/fish.c diff --git a/fish/fish.c b/fish/fish.c index 0147ff22..06e15859 100644 --- a/fish/fish.c +++ b/fish/fish.c @@ -1,6 +1,8 @@ +/* $NetBSD: fish.c,v 1.13 2000/05/08 07:56:03 mycroft Exp $ */ + /*- - * Copyright (c) 1990 The Regents of the University of California. - * All rights reserved. + * Copyright (c) 1990, 1993 + * The Regents of the University of California. All rights reserved. * * This code is derived from software contributed to Berkeley by * Muffy Barkocy. @@ -34,57 +36,87 @@ * SUCH DAMAGE. */ +#include #ifndef lint -char copyright[] = -"@(#) Copyright (c) 1990 The Regents of the University of California.\n\ - All rights reserved.\n"; +__COPYRIGHT("@(#) Copyright (c) 1990, 1993\n\ + The Regents of the University of California. All rights reserved.\n"); #endif /* not lint */ #ifndef lint -static char sccsid[] = "@(#)fish.c 5.4 (Berkeley) 1/18/91"; +#if 0 +static char sccsid[] = "@(#)fish.c 8.1 (Berkeley) 5/31/93"; +#else +__RCSID("$NetBSD: fish.c,v 1.13 2000/05/08 07:56:03 mycroft Exp $"); +#endif #endif /* not lint */ #include -#include +#include +#include #include #include #include +#include #include +#include +#include #include "pathnames.h" #define RANKS 13 #define HANDSIZE 7 #define CARDS 4 +#define TOTCARDS RANKS * CARDS #define USER 1 #define COMPUTER 0 #define OTHER(a) (1 - (a)) -char *cards[] = { +const char *const cards[] = { "A", "2", "3", "4", "5", "6", "7", "8", "9", "10", "J", "Q", "K", NULL, }; #define PRC(card) (void)printf(" %s", cards[card]) int promode; -int asked[RANKS], comphand[RANKS], deck[RANKS]; +int asked[RANKS], comphand[RANKS], deck[TOTCARDS]; int userasked[RANKS], userhand[RANKS]; - +int curcard = TOTCARDS; + +void chkwinner __P((int, const int *)); +int compmove __P((void)); +int countbooks __P((const int *)); +int countcards __P((const int *)); +int drawcard __P((int, int *)); +int gofish __P((int, int, int *)); +void goodmove __P((int, int, int *, int *)); +void init __P((void)); +void instructions __P((void)); +int main __P((int, char *[])); +int nrandom __P((int)); +void printhand __P((const int *)); +void printplayer __P((int)); +int promove __P((void)); +void usage __P((void)) __attribute__((__noreturn__)); +int usermove __P((void)); + +int main(argc, argv) int argc; char **argv; { int ch, move; - while ((ch = getopt(argc, argv, "p")) != EOF) + /* Revoke setgid privileges */ + setgid(getgid()); + + while ((ch = getopt(argc, argv, "p")) != -1) switch(ch) { case 'p': promode = 1; break; case '?': default: - (void)fprintf(stderr, "usage: fish [-p]\n"); - exit(1); + usage(); } srandom(time((time_t *)NULL)); @@ -121,10 +153,11 @@ istart: for (;;) { /* NOTREACHED */ } +int usermove() { - register int n; - register char **p; + int n; + const char *const *p; char buf[256]; (void)printf("\nYour hand is:"); @@ -133,13 +166,13 @@ usermove() for (;;) { (void)printf("You ask me for: "); (void)fflush(stdout); - if (fgets(buf, BUFSIZ, stdin) == NULL) + if (fgets(buf, sizeof(buf), stdin) == NULL) exit(0); if (buf[0] == '\0') continue; if (buf[0] == '\n') { (void)printf("%d cards in my hand, %d in the pool.\n", - countcards(comphand), countcards(deck)); + countcards(comphand), curcard); (void)printf("My books:"); (void)countbooks(comphand); continue; @@ -175,6 +208,7 @@ usermove() /* NOTREACHED */ } +int compmove() { static int lmove; @@ -192,9 +226,10 @@ compmove() return(lmove); } +int promove() { - register int i, max; + int i, max; for (i = 0; i < RANKS; ++i) if (userasked[i] && @@ -230,15 +265,14 @@ promove() /* NOTREACHED */ } +int drawcard(player, hand) int player; int *hand; { int card; - while (deck[card = nrandom(RANKS)] == 0); - ++hand[card]; - --deck[card]; + ++hand[card = deck[--curcard]]; if (player == USER || hand[card] == CARDS) { printplayer(player); (void)printf("drew %s", cards[card]); @@ -252,6 +286,7 @@ drawcard(player, hand) return(card); } +int gofish(askedfor, player, hand) int askedfor, player; int *hand; @@ -268,6 +303,7 @@ gofish(askedfor, player, hand) return(0); } +void goodmove(player, move, hand, opphand) int player, move; int *hand, *opphand; @@ -291,11 +327,12 @@ goodmove(player, move, hand, opphand) (void)printf("get another guess!\n"); } +void chkwinner(player, hand) int player; - register int *hand; + const int *hand; { - register int cb, i, ub; + int cb, i, ub; for (i = 0; i < RANKS; ++i) if (hand[i] > 0 && hand[i] < CARDS) @@ -320,6 +357,7 @@ chkwinner(player, hand) exit(0); } +void printplayer(player) int player; { @@ -333,10 +371,11 @@ printplayer(player) } } +void printhand(hand) - int *hand; + const int *hand; { - register int book, i, j; + int book, i, j; for (book = i = 0; i < RANKS; i++) if (hand[i] < CARDS) @@ -353,18 +392,20 @@ printhand(hand) (void)putchar('\n'); } +int countcards(hand) - register int *hand; + const int *hand; { - register int i, count; + int i, count; for (count = i = 0; i < RANKS; i++) count += *hand++; return(count); } +int countbooks(hand) - int *hand; + const int *hand; { int i, count; @@ -379,36 +420,43 @@ countbooks(hand) return(count); } +void init() { - register int i, rank; + int i, j, temp; - for (i = 0; i < RANKS; ++i) - deck[i] = CARDS; - for (i = 0; i < HANDSIZE; ++i) { - while (!deck[rank = nrandom(RANKS)]); - ++userhand[rank]; - --deck[rank]; + for (i = 0; i < TOTCARDS; ++i) + deck[i] = i % RANKS; + for (i = 0; i < TOTCARDS - 1; ++i) { + j = nrandom(TOTCARDS-i); + if (j == 0) + continue; + temp = deck[i]; + deck[i] = deck[i+j]; + deck[i+j] = temp; } for (i = 0; i < HANDSIZE; ++i) { - while (!deck[rank = nrandom(RANKS)]); - ++comphand[rank]; - --deck[rank]; + ++userhand[deck[--curcard]]; + ++comphand[deck[--curcard]]; } } +int nrandom(n) int n; { - long random(); return((int)random() % n); } +void instructions() { int input; - char buf[1024]; + pid_t pid; + int fd; + const char *pager; + int status; (void)printf("Would you like instructions (y or n)? "); input = getchar(); @@ -416,12 +464,33 @@ instructions() if (input != 'y') return; - (void)sprintf(buf, "%s %s", _PATH_MORE, _PATH_INSTR); - (void)system(buf); + switch (pid = fork()) { + case 0: /* child */ + if (!isatty(1)) + pager = "cat"; + else { + if (!(pager = getenv("PAGER")) || (*pager == 0)) + pager = _PATH_MORE; + } + if ((fd = open(_PATH_INSTR, O_RDONLY)) == -1) + err(1, "open %s", _PATH_INSTR); + if (dup2(fd, 0) == -1) + err(1, "dup2"); + (void)execl("/bin/sh", "sh", "-c", pager, NULL); + err(1, "exec sh -c %s", pager); + /*NOTREACHED*/ + case -1: + err(1, "fork"); + /*NOTREACHED*/ + default: + (void)waitpid(pid, &status, 0); + break; + } (void)printf("Hit return to continue...\n"); while ((input = getchar()) != EOF && input != '\n'); } +void usage() { (void)fprintf(stderr, "usage: fish [-p]\n");