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authorB. Watson <yalhcru@gmail.com>2015-05-07 16:32:32 -0400
committerB. Watson <yalhcru@gmail.com>2015-05-07 16:32:32 -0400
commit013ac7742311556022304e8b30ca170d48b3a016 (patch)
tree53faa33e75991363f1a6dcc7edc83a66b70e6995 /ching/castching
downloadbsd-games-extra-013ac7742311556022304e8b30ca170d48b3a016.tar.gz
initial commit
Diffstat (limited to 'ching/castching')
-rw-r--r--ching/castching/Makefile7
-rw-r--r--ching/castching/castching.c135
2 files changed, 142 insertions, 0 deletions
diff --git a/ching/castching/Makefile b/ching/castching/Makefile
new file mode 100644
index 0000000..dd84fc9
--- /dev/null
+++ b/ching/castching/Makefile
@@ -0,0 +1,7 @@
+# $NetBSD: Makefile,v 1.1 2005/06/30 13:30:33 perry Exp $
+
+PROG= castching
+NOMAN= # defined
+BINDIR= /usr/libexec/ching
+
+.include <bsd.prog.mk>
diff --git a/ching/castching/castching.c b/ching/castching/castching.c
new file mode 100644
index 0000000..351037a
--- /dev/null
+++ b/ching/castching/castching.c
@@ -0,0 +1,135 @@
+/* $NetBSD: castching.c,v 1.3 2009/08/12 05:40:03 dholland Exp $ */
+
+/*
+ * Copyright (c) 1988, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Guy Harris.
+ *
+ * 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. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. 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 <sys/cdefs.h>
+#ifndef lint
+__COPYRIGHT("@(#) Copyright (c) 1988, 1993\
+ The Regents of the University of California. All rights reserved.");
+#endif /* not lint */
+
+#ifndef lint
+#if 0
+static char sccsid[] = "@(#)ching.cno.c 8.1 (Berkeley) 5/31/93";
+#else
+__RCSID("$NetBSD: castching.c,v 1.3 2009/08/12 05:40:03 dholland Exp $");
+#endif
+#endif /* not lint */
+
+/*
+ * castching - Read a question, cast a change, and output the line
+ * values to the standard output for processing by "printching".
+ */
+#include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
+#include <unistd.h>
+#include "ching.h"
+
+static time_t now; /* current time */
+
+static unsigned seed; /* seed for random number generator */
+
+static int getquest(void);
+static unsigned getrand(void);
+static unsigned getrnum(void);
+static char *change(void);
+
+static char string[6+1]; /* where the actual change string is put */
+
+static int table[2][2][2] = {
+ { { OYIN, YYANG,}, { YYANG, YYIN,} },
+ { { YYANG, YYIN,}, { YYIN, OYANG,} },
+};
+
+/*ARGSUSED*/
+int
+main(int argc, char **argv)
+{
+ time(&now);
+ /* randomize */
+ seed = (int)now + getquest() + getgid() + getuid() + getpid();
+ printf("%s\n", change());
+ exit(0);
+}
+
+/*
+ * Hash the question by adding all the characters together.
+ */
+static int
+getquest(void)
+{
+ int result;
+ int c;
+
+ result = 0;
+ while ((c = getchar()) != EOF)
+ result += c;
+ return(result);
+}
+
+/*
+ * Get a set of six lines making up a change.
+ */
+static char *
+change(void)
+{
+ int i;
+
+ for (i = 0; i < 6; i++)
+ string[i] = table[getrnum()&01][getrnum()&01][getrnum()&01] + '0';
+ string[i] = '\0';
+ return(string);
+}
+
+/*
+ * Get a number more random than what getrand() gives.
+ */
+static unsigned
+getrnum(void)
+{
+ return((getrand())>>(getrand()%17));
+}
+
+/*
+ * Get a random number.
+ */
+static unsigned
+getrand(void)
+{
+ return(seed = (seed*13077) + 6925);
+}