BSD 4_4 release

[unix-history] / usr / src / games / boggle / mkindex / mkindex.c

/*-
* Copyright (c) 1993
*      The Regents of the University of California.  All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Barry Brachman.
*
* 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) 1993\n\
       The Regents of the University of California.  All rights reserved.\n";
#endif /* not lint */

#ifndef lint
static char sccsid[] = "@(#)mkindex.c   8.1 (Berkeley) 6/11/93";
#endif /* not lint */

#include <stdio.h>

#include "bog.h"

char *nextword __P((FILE *, char *, int *, int *));

int
main(argc, argv)
       int argc;
       char *argv[];
{
       int clen, rlen, prev;
       long off, start;
       char buf[MAXWORDLEN + 1];

       prev = '\0';
       off = start = 0L;
       while (nextword(stdin, buf, &clen, &rlen) != NULL) {
               if (*buf != prev) {
                       if (prev != '\0')
                               printf("%c %6ld %6ld\n", prev, start, off - 1);
                       prev = *buf;
                       start = off;
               }
               off += clen + 1;
       }
       printf("%c %6ld %6ld\n", prev, start, off - 1);
       exit(0);
}

/*
* Return the next word in the compressed dictionary in 'buffer' or
* NULL on end-of-file
* Also set clen to the length of the compressed word (for mkindex) and
* rlen to the strlen() of the real word
*/
char *
nextword(fp, buffer, clen, rlen)
       FILE *fp;
       char *buffer;
       int *clen, *rlen;
{
       register int ch, pcount;
       register char *p, *q;
       static char buf[MAXWORDLEN + 1];
       static int first = 1;
       static int lastch = 0;

       if (first) {
               if ((pcount = getc(fp)) == EOF)
                       return (NULL);
               first = 0;
       }
       else if ((pcount = lastch) == EOF)
               return (NULL);

       p = buf + (*clen = pcount);

       while ((ch = getc(fp)) != EOF && ch >= 'a')
                       *p++ = ch;
               lastch = ch;
       *p = '\0';

       *rlen = (int) (p - buf);
       *clen = *rlen - *clen;

       p = buf;
       q = buffer;
       while ((*q++ = *p) != '\0') {
               if (*p++ == 'q')
                       *q++ = 'u';
       }
       return (buffer);
}