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[] = "@(#)fortran.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 static void takeprec(void);
49
50 char *lbp; /* line buffer pointer */
51
52 int
PF_funcs(void)53 PF_funcs(void)
54 {
55 bool pfcnt; /* pascal/fortran functions found */
56 char *cp;
57 char tok[MAXTOKEN];
58
59 for (pfcnt = NO;;) {
60 lineftell = ftell(inf);
61 if (!fgets(lbuf, sizeof(lbuf), inf))
62 return (pfcnt);
63 ++lineno;
64 lbp = lbuf;
65 if (*lbp == '%') /* Ratfor escape to fortran */
66 ++lbp;
67 for (; isspace(*lbp); ++lbp)
68 continue;
69 if (!*lbp)
70 continue;
71 switch (*lbp | ' ') { /* convert to lower-case */
72 case 'c':
73 if (cicmp("complex") || cicmp("character"))
74 takeprec();
75 break;
76 case 'd':
77 if (cicmp("double")) {
78 for (; isspace(*lbp); ++lbp)
79 continue;
80 if (!*lbp)
81 continue;
82 if (cicmp("precision"))
83 break;
84 continue;
85 }
86 break;
87 case 'i':
88 if (cicmp("integer"))
89 takeprec();
90 break;
91 case 'l':
92 if (cicmp("logical"))
93 takeprec();
94 break;
95 case 'r':
96 if (cicmp("real"))
97 takeprec();
98 break;
99 }
100 for (; isspace(*lbp); ++lbp)
101 continue;
102 if (!*lbp)
103 continue;
104 switch (*lbp | ' ') {
105 case 'f':
106 if (cicmp("function"))
107 break;
108 continue;
109 case 'p':
110 if (cicmp("program") || cicmp("procedure"))
111 break;
112 continue;
113 case 's':
114 if (cicmp("subroutine"))
115 break;
116 default:
117 continue;
118 }
119 for (; isspace(*lbp); ++lbp)
120 continue;
121 if (!*lbp)
122 continue;
123 for (cp = lbp + 1; *cp && intoken(*cp); ++cp)
124 continue;
125 if (cp == lbp + 1)
126 continue;
127 *cp = EOS;
128 (void)strlcpy(tok, lbp, sizeof(tok)); /* possible trunc */
129 get_line(); /* process line for ex(1) */
130 pfnote(tok, lineno);
131 pfcnt = YES;
132 }
133 /*NOTREACHED*/
134 }
135
136 /*
137 * cicmp --
138 * do case-independent strcmp
139 */
140 int
cicmp(const char * cp)141 cicmp(const char *cp)
142 {
143 int len;
144 char *bp;
145
146 for (len = 0, bp = lbp; *cp && (*cp &~ ' ') == (*bp++ &~ ' ');
147 ++cp, ++len)
148 continue;
149 if (!*cp) {
150 lbp += len;
151 return (YES);
152 }
153 return (NO);
154 }
155
156 static void
takeprec(void)157 takeprec(void)
158 {
159 for (; isspace(*lbp); ++lbp)
160 continue;
161 if (*lbp == '*') {
162 for (++lbp; isspace(*lbp); ++lbp)
163 continue;
164 if (!isdigit(*lbp))
165 --lbp; /* force failure */
166 else
167 while (isdigit(*++lbp))
168 continue;
169 }
170 }
171