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Initial revision
git-svn-id: file:///srv/svn/joey/bsdgames-trunk@5198 a4a2c43b-8ac3-0310-8836-e0e880c912e2
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joey
150
hack/hack.rumors.c
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150
hack/hack.rumors.c
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/* $NetBSD: hack.rumors.c,v 1.4 1997/10/19 16:58:55 christos Exp $ */
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/*
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* Copyright (c) 1985, Stichting Centrum voor Wiskunde en Informatica,
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* Amsterdam
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* - Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* - Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* - Neither the name of the Stichting Centrum voor Wiskunde en
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* Informatica, nor the names of its contributors may be used to endorse or
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* promote products derived from this software without specific prior
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* written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
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* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
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* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
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* OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* Copyright (c) 1982 Jay Fenlason <hack@gnu.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
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* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
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* THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#ifndef lint
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__RCSID("$NetBSD: hack.rumors.c,v 1.4 1997/10/19 16:58:55 christos Exp $");
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#endif /* not lint */
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#include "hack.h" /* for RUMORFILE and BSD (strchr) */
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#include "extern.h"
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#define CHARSZ 8 /* number of bits in a char */
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int n_rumors = 0;
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int n_used_rumors = -1;
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char *usedbits;
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void
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init_rumors(rumf)
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FILE *rumf;
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{
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int i;
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n_used_rumors = 0;
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while (skipline(rumf))
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n_rumors++;
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rewind(rumf);
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i = n_rumors / CHARSZ;
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usedbits = (char *) alloc((unsigned) (i + 1));
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for (; i >= 0; i--)
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usedbits[i] = 0;
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}
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int
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skipline(rumf)
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FILE *rumf;
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{
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char line[COLNO];
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while (1) {
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if (!fgets(line, sizeof(line), rumf))
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return (0);
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if (strchr(line, '\n'))
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return (1);
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}
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}
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void
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outline(rumf)
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FILE *rumf;
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{
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char line[COLNO];
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char *ep;
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if (!fgets(line, sizeof(line), rumf))
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return;
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if ((ep = strchr(line, '\n')) != 0)
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*ep = 0;
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pline("This cookie has a scrap of paper inside! It reads: ");
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pline(line);
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}
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void
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outrumor()
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{
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int rn, i;
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FILE *rumf;
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if (n_rumors <= n_used_rumors ||
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(rumf = fopen(RUMORFILE, "r")) == (FILE *) 0)
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return;
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if (n_used_rumors < 0)
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init_rumors(rumf);
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if (!n_rumors)
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goto none;
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rn = rn2(n_rumors - n_used_rumors);
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i = 0;
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while (rn || used(i)) {
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(void) skipline(rumf);
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if (!used(i))
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rn--;
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i++;
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}
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usedbits[i / CHARSZ] |= (1 << (i % CHARSZ));
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n_used_rumors++;
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outline(rumf);
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none:
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(void) fclose(rumf);
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}
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int
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used(i)
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int i;
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{
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return (usedbits[i / CHARSZ] & (1 << (i % CHARSZ)));
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}
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