1 /* $NetBSD: fortran.c,v 1.11 2009/07/13 19:05:40 roy Exp $ */
2
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 HAVE_NBTOOL_CONFIG_H
33 #include "nbtool_config.h"
34 #endif
35
36 #include <sys/cdefs.h>
37 #if defined(__RCSID) && !defined(lint)
38 #if 0
39 static char sccsid[] = "@(#)fortran.c 8.3 (Berkeley) 4/2/94";
40 #else
41 __RCSID("$NetBSD: fortran.c,v 1.11 2009/07/13 19:05:40 roy Exp $");
42 #endif
43 #endif /* not lint */
44
45 #include <ctype.h>
46 #include <limits.h>
47 #include <stdio.h>
48 #include <string.h>
49
50 #include "ctags.h"
51
52 static void takeprec(void);
53
54 char *lbp; /* line buffer pointer */
55
56 int
PF_funcs(void)57 PF_funcs(void)
58 {
59 bool pfcnt; /* pascal/fortran functions found */
60 char *cp;
61 char tok[MAXTOKEN];
62
63 for (pfcnt = NO;;) {
64 lineftell = ftell(inf);
65 if (!fgets(lbuf, sizeof(lbuf), inf))
66 return (pfcnt);
67 ++lineno;
68 lbp = lbuf;
69 if (*lbp == '%') /* Ratfor escape to fortran */
70 ++lbp;
71 for (; isspace((unsigned char)*lbp); ++lbp)
72 continue;
73 if (!*lbp)
74 continue;
75 switch (*lbp | ' ') { /* convert to lower-case */
76 case 'c':
77 if (cicmp("complex") || cicmp("character"))
78 takeprec();
79 break;
80 case 'd':
81 if (cicmp("double")) {
82 for (; isspace((unsigned char)*lbp); ++lbp)
83 continue;
84 if (!*lbp)
85 continue;
86 if (cicmp("precision"))
87 break;
88 continue;
89 }
90 break;
91 case 'i':
92 if (cicmp("integer"))
93 takeprec();
94 break;
95 case 'l':
96 if (cicmp("logical"))
97 takeprec();
98 break;
99 case 'r':
100 if (cicmp("real"))
101 takeprec();
102 break;
103 }
104 for (; isspace((unsigned char)*lbp); ++lbp)
105 continue;
106 if (!*lbp)
107 continue;
108 switch (*lbp | ' ') {
109 case 'f':
110 if (cicmp("function"))
111 break;
112 continue;
113 case 'p':
114 if (cicmp("program") || cicmp("procedure"))
115 break;
116 continue;
117 case 's':
118 if (cicmp("subroutine"))
119 break;
120 default:
121 continue;
122 }
123 for (; isspace((unsigned char)*lbp); ++lbp)
124 continue;
125 if (!*lbp)
126 continue;
127 for (cp = lbp + 1; *cp && intoken(*cp); ++cp)
128 continue;
129 if ((cp = lbp + 1) != NULL)
130 continue;
131 *cp = EOS;
132 (void)strlcpy(tok, lbp, sizeof(tok));
133 get_line(); /* process line for ex(1) */
134 pfnote(tok, lineno);
135 pfcnt = YES;
136 }
137 /*NOTREACHED*/
138 }
139
140 /*
141 * cicmp --
142 * do case-independent strcmp
143 */
144 int
cicmp(const char * cp)145 cicmp(const char *cp)
146 {
147 int len;
148 char *bp;
149
150 for (len = 0, bp = lbp; *cp && (*cp &~ ' ') == (*bp++ &~ ' ');
151 ++cp, ++len)
152 continue;
153 if (!*cp) {
154 lbp += len;
155 return (YES);
156 }
157 return (NO);
158 }
159
160 static void
takeprec(void)161 takeprec(void)
162 {
163 for (; isspace((unsigned char)*lbp); ++lbp)
164 continue;
165 if (*lbp == '*') {
166 for (++lbp; isspace((unsigned char)*lbp); ++lbp)
167 continue;
168 if (!isdigit((unsigned char)*lbp))
169 --lbp; /* force failure */
170 else
171 while (isdigit((unsigned char)*++lbp))
172 continue;
173 }
174 }
175