xref: /freebsd/usr.bin/ctags/lisp.c (revision 42249ef2)
1 /*-
2  * SPDX-License-Identifier: BSD-3-Clause
3  *
4  * Copyright (c) 1987, 1993, 1994
5  *	The Regents of the University of California.  All rights reserved.
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions
9  * are met:
10  * 1. Redistributions of source code must retain the above copyright
11  *    notice, this list of conditions and the following disclaimer.
12  * 2. Redistributions in binary form must reproduce the above copyright
13  *    notice, this list of conditions and the following disclaimer in the
14  *    documentation and/or other materials provided with the distribution.
15  * 3. Neither the name of the University nor the names of its contributors
16  *    may be used to endorse or promote products derived from this software
17  *    without specific prior written permission.
18  *
19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29  * SUCH DAMAGE.
30  */
31 
32 #if 0
33 #ifndef lint
34 static char sccsid[] = "@(#)lisp.c	8.3 (Berkeley) 4/2/94";
35 #endif
36 #endif
37 
38 #include <sys/cdefs.h>
39 __FBSDID("$FreeBSD$");
40 
41 #include <ctype.h>
42 #include <limits.h>
43 #include <stdio.h>
44 #include <string.h>
45 
46 #include "ctags.h"
47 
48 /*
49  * lisp tag functions
50  * just look for (def or (DEF
51  */
52 void
53 l_entries(void)
54 {
55 	int	special;
56 	char	*cp;
57 	char	savedc;
58 	char	tok[MAXTOKEN];
59 
60 	for (;;) {
61 		lineftell = ftell(inf);
62 		if (!fgets(lbuf, sizeof(lbuf), inf))
63 			return;
64 		++lineno;
65 		lbp = lbuf;
66 		if (!cicmp("(def"))
67 			continue;
68 		special = NO;
69 		switch(*lbp | ' ') {
70 		case 'm':
71 			if (cicmp("method"))
72 				special = YES;
73 			break;
74 		case 'w':
75 			if (cicmp("wrapper") || cicmp("whopper"))
76 				special = YES;
77 		}
78 		for (; !isspace(*lbp); ++lbp)
79 			continue;
80 		for (; isspace(*lbp); ++lbp)
81 			continue;
82 		for (cp = lbp; *cp && *cp != '\n'; ++cp)
83 			continue;
84 		*cp = EOS;
85 		if (special) {
86 			if (!(cp = strchr(lbp, ')')))
87 				continue;
88 			for (; cp >= lbp && *cp != ':'; --cp)
89 				continue;
90 			if (cp < lbp)
91 				continue;
92 			lbp = cp;
93 			for (; *cp && *cp != ')' && *cp != ' '; ++cp)
94 				continue;
95 		}
96 		else
97 			for (cp = lbp + 1;
98 			    *cp && *cp != '(' && *cp != ' '; ++cp)
99 				continue;
100 		savedc = *cp;
101 		*cp = EOS;
102 		(void)strlcpy(tok, lbp, sizeof(tok));	/* possible trunc */
103 		*cp = savedc;
104 		get_line();
105 		pfnote(tok, lineno);
106 	}
107 	/*NOTREACHED*/
108 }
109