1 files changed, 110 insertions, 0 deletions
diff --git a/locate.freebsd/bigram/locate.bigram.c b/locate.freebsd/bigram/locate.bigram.c
new file mode 100644
index 0000000..208824f
--- /dev/null
+++ b/locate.freebsd/bigram/locate.bigram.c
@@ -0,0 +1,110 @@
+/*
+ * Copyright (c) 1995 Wolfram Schneider <wosch@FreeBSD.org>. Berlin.
+ * Copyright (c) 1989, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * James A. Woods.
+ *
+ * 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.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef lint
+static char copyright[] =
+"@(#) Copyright (c) 1989, 1993\n\
+	The Regents of the University of California.  All rights reserved.\n";
+#endif /* not lint */
+
+#ifndef lint
+static char sccsid[] = "@(#)locate.bigram.c	8.1 (Berkeley) 6/6/93";
+#endif /* not lint */
+
+/*
+ *  bigram < sorted_file_names | sort -nr | 
+ *  	awk 'NR <= 128 { printf $2 }' > bigrams
+ *
+ * List bigrams for 'updatedb' script.
+ * Use 'code' to encode a file using this output.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/param.h>			/* for MAXPATHLEN */
+#include "locate.h"
+
+u_char buf1[MAXPATHLEN] = " ";
+u_char buf2[MAXPATHLEN];
+u_int bigram[UCHAR_MAX + 1][UCHAR_MAX + 1];
+
+int
+main(void)
+{
+  	register u_char *cp;
+	register u_char *oldpath = buf1, *path = buf2;
+	register u_int i, j;
+
+     	while (fgets(path, sizeof(buf2), stdin) != NULL) {
+
+		/* 
+		 * We don't need remove newline character '\n'.
+		 * '\n' is less than ASCII_MIN and will be later
+		 * ignored at output.
+		 */
+
+
+		/* skip longest common prefix */
+		for (cp = path; *cp == *oldpath; cp++, oldpath++)
+			if (*cp == '\0')
+				break;
+
+		while (*cp != '\0' && *(cp + 1) != '\0') {
+			bigram[(u_char)*cp][(u_char)*(cp + 1)]++;
+			cp += 2;
+		}
+
+		/* swap pointers */
+		if (path == buf1) { 
+			path = buf2;
+			oldpath = buf1;
+		} else {
+			path = buf1;
+			oldpath = buf2;
+		}
+   	}
+
+	/* output, boundary check */
+	for (i = ASCII_MIN; i <= ASCII_MAX; i++)
+		for (j = ASCII_MIN; j <= ASCII_MAX; j++)
+			if (bigram[i][j] != 0)
+				(void)printf("%4u %c%c\n", bigram[i][j], i, j);
+
+	exit(0);
+}