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author | rgrimes <rgrimes@FreeBSD.org> | 1994-05-27 12:33:43 +0000 |
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committer | rgrimes <rgrimes@FreeBSD.org> | 1994-05-27 12:33:43 +0000 |
commit | f9ab90d9d6d02989a075d0f0074496d5b1045e4b (patch) | |
tree | add7e996bac5289cdc55e6935750c352505560a9 /usr.bin/locate/bigram/locate.bigram.c | |
parent | be22b15ae2ff8d7fe06b6e14fddf0c5b444a95da (diff) | |
download | FreeBSD-src-f9ab90d9d6d02989a075d0f0074496d5b1045e4b.zip FreeBSD-src-f9ab90d9d6d02989a075d0f0074496d5b1045e4b.tar.gz |
BSD 4.4 Lite Usr.bin Sources
Diffstat (limited to 'usr.bin/locate/bigram/locate.bigram.c')
-rw-r--r-- | usr.bin/locate/bigram/locate.bigram.c | 84 |
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; + } +} |