xref: /netbsd/games/boggle/mkindex/mkindex.c (revision bf9ec67e)
1 /* $NetBSD: mkindex.c,v 1.8 2000/07/31 11:29:48 simonb Exp $ */
2 
3 /*-
4  * Copyright (c) 1993
5  *	The Regents of the University of California.  All rights reserved.
6  *
7  * This code is derived from software contributed to Berkeley by
8  * Barry Brachman.
9  *
10  * Redistribution and use in source and binary forms, with or without
11  * modification, are permitted provided that the following conditions
12  * are met:
13  * 1. Redistributions of source code must retain the above copyright
14  *    notice, this list of conditions and the following disclaimer.
15  * 2. Redistributions in binary form must reproduce the above copyright
16  *    notice, this list of conditions and the following disclaimer in the
17  *    documentation and/or other materials provided with the distribution.
18  * 3. All advertising materials mentioning features or use of this software
19  *    must display the following acknowledgement:
20  *	This product includes software developed by the University of
21  *	California, Berkeley and its contributors.
22  * 4. Neither the name of the University nor the names of its contributors
23  *    may be used to endorse or promote products derived from this software
24  *    without specific prior written permission.
25  *
26  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
27  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
28  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
29  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
30  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
31  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
32  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
33  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
34  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
35  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36  * SUCH DAMAGE.
37  */
38 
39 #ifndef lint
40 static char copyright[] = "@(#) Copyright (c) 1993\n\
41 	The Regents of the University of California.  All rights reserved.\n";
42 
43 #if 0
44 static char sccsid[] = "@(#)mkindex.c	8.1 (Berkeley) 6/11/93";
45 #else
46 static char rcsid[] =
47     "$NetBSD: mkindex.c,v 1.8 2000/07/31 11:29:48 simonb Exp $";
48 #endif
49 #endif /* not lint */
50 
51 #include <stdio.h>
52 #include <stdlib.h>
53 
54 #include "bog.h"
55 
56 int main(void);
57 char *nextword(FILE *, char *, int *, int *);
58 
59 int
60 main(void)
61 {
62 	int clen, rlen, prev, i;
63 	long off, start;
64 	char buf[MAXWORDLEN + 1];
65 
66 	prev = '\0';
67 	off = start = 0L;
68 	while (nextword(stdin, buf, &clen, &rlen) != NULL) {
69 		if (*buf != prev) {
70 			/*
71 			 * Boggle expects a full index even if the dictionary
72 			 * had no words beginning with some letters.
73 			 * So we write out entries for every letter from prev
74 			 * to *buf.
75 			 */
76 			if (prev != '\0')
77 				printf("%c %6ld %6ld\n", prev, start, off - 1);
78 			for (i = (prev ? prev + 1 : 'a'); i < *buf; i++)
79 				printf("%c %6ld %6ld\n", i, off, off - 1);
80 			prev = *buf;
81 			start = off;
82 		}
83 		off += clen + 1;
84 	}
85 	printf("%c %6ld %6ld\n", prev, start, off - 1);
86 	for (i = prev + 1; i <= 'z'; i++)
87 		printf("%c %6ld %6ld\n", i, off, off - 1);
88 	fflush(stdout);
89 	if (ferror(stdout)) {
90 		perror("error writing standard output");
91 		exit(1);
92 	}
93 	exit(0);
94 }
95 
96 /*
97  * Return the next word in the compressed dictionary in 'buffer' or
98  * NULL on end-of-file
99  * Also set clen to the length of the compressed word (for mkindex) and
100  * rlen to the strlen() of the real word
101  */
102 char *
103 nextword(fp, buffer, clen, rlen)
104 	FILE *fp;
105 	char *buffer;
106 	int *clen, *rlen;
107 {
108 	int ch, pcount;
109 	char *p, *q;
110 	static char buf[MAXWORDLEN + 1];
111 	static int first = 1;
112 	static int lastch = 0;
113 
114    	if (first) {
115 		if ((pcount = getc(fp)) == EOF)
116 			return (NULL);
117 		first = 0;
118 	}
119 	else if ((pcount = lastch) == EOF)
120 		return (NULL);
121 
122 	p = buf + (*clen = pcount);
123 
124 	while ((ch = getc(fp)) != EOF && ch >= 'a')
125 			*p++ = ch;
126 		lastch = ch;
127 	*p = '\0';
128 
129 	*rlen = (int) (p - buf);
130 	*clen = *rlen - *clen;
131 
132 	p = buf;
133 	q = buffer;
134 	while ((*q++ = *p) != '\0') {
135 		if (*p++ == 'q')
136 			*q++ = 'u';
137 	}
138 	return (buffer);
139 }
140