From: Thomas Cort Date: Sun, 16 Mar 2014 14:52:07 +0000 (-0400) Subject: Importing games/random X-Git-Tag: v3.3.0~385 X-Git-Url: http://zhaoyanbai.com/repos/%22http:/www.isc.org/icons/readme1st.txt?a=commitdiff_plain;h=b098ee9ca60bbbf3287108da398fd4ac0666e047;p=minix.git Importing games/random No Minix specific changes needed. Change-Id: I0fd074325f334f03426accbece4e731b746ebe14 --- diff --git a/distrib/sets/lists/minix/mi b/distrib/sets/lists/minix/mi index f2717fa14..bf24878ec 100644 --- a/distrib/sets/lists/minix/mi +++ b/distrib/sets/lists/minix/mi @@ -566,6 +566,7 @@ ./usr/games/pig minix-sys ./usr/games/ppt minix-sys ./usr/games/primes minix-sys +./usr/games/random minix-sys ./usr/games/strfile minix-sys ./usr/games/unstr minix-sys ./usr/games/wargames minix-sys @@ -4766,6 +4767,7 @@ ./usr/man/man6/pig.6 minix-sys ./usr/man/man6/ppt.6 minix-sys ./usr/man/man6/primes.6 minix-sys +./usr/man/man6/random.6 minix-sys ./usr/man/man6/wargames.6 minix-sys ./usr/man/man7 minix-sys ./usr/man/man7/ascii.7 minix-sys diff --git a/games/Makefile b/games/Makefile index 7c7888cfc..5f0635d72 100644 --- a/games/Makefile +++ b/games/Makefile @@ -13,7 +13,7 @@ SUBDIR= adventure \ factor fortune \ monop morse number \ pig ppt primes \ - \ + random \ wargames .if !defined(__MINIX) diff --git a/games/random/Makefile b/games/random/Makefile new file mode 100644 index 000000000..a7fe642e1 --- /dev/null +++ b/games/random/Makefile @@ -0,0 +1,7 @@ +# $NetBSD: Makefile,v 1.5 2008/01/28 07:03:59 dholland Exp $ +# @(#)Makefile 8.1 (Berkeley) 3/31/94 + +PROG= random +MAN= random.6 + +.include diff --git a/games/random/random.6 b/games/random/random.6 new file mode 100644 index 000000000..c4b42c825 --- /dev/null +++ b/games/random/random.6 @@ -0,0 +1,68 @@ +.\" $NetBSD: random.6,v 1.7 2007/03/20 16:12:40 hubertf Exp $ +.\" +.\" Copyright (c) 1994 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. Neither the name of the University nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" @(#)random.6 8.2 (Berkeley) 3/31/94 +.\" +.Dd March 20, 2007 +.Dt RANDOM 6 +.Os +.Sh NAME +.Nm random +.Nd random lines from a file or random numbers +.Sh SYNOPSIS +.Nm +.Op Fl er +.Op Ar denominator +.Sh DESCRIPTION +.Nm +reads lines from the standard input and copies them to the standard +output with a probability of 1/denominator. +The default value for +.Ar denominator +is 2. +.Pp +The options are as follows: +.Bl -tag -width Ds +.It Fl e +If the +.Fl e +option is specified, +.Nm +does not read or write anything, and simply exits with a random +exit value of 0 to +.Ar denominator Ns -1 , +inclusive. +.It Fl r +The +.Fl r +option guarantees that the output is unbuffered. +.El +.Sh SEE ALSO +.Xr shuffle 1 , +.Xr fortune 6 diff --git a/games/random/random.c b/games/random/random.c new file mode 100644 index 000000000..c4bb50b1a --- /dev/null +++ b/games/random/random.c @@ -0,0 +1,152 @@ +/* $NetBSD: random.c,v 1.14 2009/08/12 08:27:24 dholland Exp $ */ + +/* + * Copyright (c) 1994 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Guy Harris at Network Appliance Corp. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include +#ifndef lint +__COPYRIGHT("@(#) Copyright (c) 1994\ + The Regents of the University of California. All rights reserved."); +#endif /* not lint */ + +#ifndef lint +#if 0 +static char sccsid[] = "@(#)random.c 8.6 (Berkeley) 6/1/94"; +#else +__RCSID("$NetBSD: random.c,v 1.14 2009/08/12 08:27:24 dholland Exp $"); +#endif +#endif /* not lint */ + +#include +#include + +#include +#include +#include +#include +#include +#include +#include + +static void usage(void) __dead; + +int +main(int argc, char *argv[]) +{ + struct timeval tp; + double denom; + int ch, random_exit, selected, unbuffer_output; + char *ep; + + denom = 0; + random_exit = unbuffer_output = 0; + while ((ch = getopt(argc, argv, "er")) != -1) + switch (ch) { + case 'e': + random_exit = 1; + break; + case 'r': + unbuffer_output = 1; + break; + default: + case '?': + usage(); + /* NOTREACHED */ + } + + argc -= optind; + argv += optind; + + switch (argc) { + case 0: + denom = 2; + break; + case 1: + errno = 0; + denom = strtod(*argv, &ep); + if (errno == ERANGE) + err(1, "%s", *argv); + if (denom == 0 || *ep != '\0') + errx(1, "denominator is not valid."); + break; + default: + usage(); + /* NOTREACHED */ + } + + (void)gettimeofday(&tp, NULL); + srandom((unsigned long)tp.tv_usec + tp.tv_sec + getpid()); + + /* Compute a random exit status between 0 and denom - 1. */ + if (random_exit) + return ((denom * random()) / RANDOM_MAX); + + /* + * Act as a filter, randomly choosing lines of the standard input + * to write to the standard output. + */ + if (unbuffer_output) + setbuf(stdout, NULL); + + /* + * Select whether to print the first line. (Prime the pump.) + * We find a random number between 0 and denom - 1 and, if it's + * 0 (which has a 1 / denom chance of being true), we select the + * line. + */ + selected = (int)(denom * random() / RANDOM_MAX) == 0; + while ((ch = getchar()) != EOF) { + if (selected) + (void)putchar(ch); + if (ch == '\n') { + /* End of that line. See if we got an error. */ + if (ferror(stdout)) + err(2, "stdout"); + + /* Now see if the next line is to be printed. */ + selected = (int)(denom * random() / RANDOM_MAX) == 0; + } + } + if (ferror(stdin)) + err(2, "stdin"); + exit (0); + + return 0; +} + +static void +usage(void) +{ + + (void)fprintf(stderr, "usage: random [-er] [denominator]\n"); + exit(1); +} diff --git a/releasetools/nbsd_ports b/releasetools/nbsd_ports index 784b5e9da..bc4c37967 100644 --- a/releasetools/nbsd_ports +++ b/releasetools/nbsd_ports @@ -80,6 +80,7 @@ 2013/12/1 12:00:00,games/pig 2013/12/1 12:00:00,games/ppt 2013/12/1 12:00:00,games/primes +2013/12/1 12:00:00,games/random 2013/12/1 12:00:00,games/wargames 2013/12/1 12:00:00,gnu/dist/texinfo 2013/12/1 12:00:00,gnu/usr.bin/texinfo