1 files changed, 84 insertions, 0 deletions
diff --git a/usr.bin/locate/bigram/locate.bigram.c b/usr.bin/locate/bigram/locate.bigram.c
new file mode 100644
index 0000000..b58fac4
--- /dev/null
+++ b/usr.bin/locate/bigram/locate.bigram.c
@@ -0,0 +1,84 @@
+/*
+ * 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.
+ */
+
+#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 < text > bigrams
+ * 
+ * List bigrams for 'updatedb' script.
+ * Use 'code' to encode a file using this output.
+ */
+
+#include <stdio.h>
+#include <sys/param.h>			/* for MAXPATHLEN */
+
+char buf1[MAXPATHLEN] = " ";	
+char buf2[MAXPATHLEN];
+
+main ( )
+{
+  	register char *cp;
+	register char *oldpath = buf1, *path = buf2;
+
+     	while ( fgets ( path, sizeof(buf2), stdin ) != NULL ) {
+
+		/* skip longest common prefix */
+		for ( cp = path; *cp == *oldpath; cp++, oldpath++ )
+			if ( *oldpath == NULL )
+				break;
+		/*
+		 * output post-residue bigrams only
+		 */
+		while ( *cp != NULL && *(cp + 1) != NULL ) {
+			putchar ( *cp++ );
+			putchar ( *cp++ );
+			putchar ( '\n' );
+		}
+		if ( path == buf1 )		/* swap pointers */
+			path = buf2, oldpath = buf1;
+		else
+			path = buf1, oldpath = buf2;
+   	}
+}