1/*
2 * Copyright (c) 1987, 1993, 1994
3 * The Regents of the University of California. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 */
33
34#ifndef lint
35static const char sccsid[] = "@(#)fortran.c 8.3 (Berkeley) 4/2/94";
36#endif /* not lint */
37
38#include <ctype.h>
39#include <limits.h>
40#include <stdio.h>
41#include <string.h>
42
43#include "ctags.h"
44
45static void takeprec __P((void));
46
47char *lbp; /* line buffer pointer */
48
49int
50PF_funcs()
51{
52 bool pfcnt; /* pascal/fortran functions found */
53 char *cp;
54 char tok[MAXTOKEN];
55
56 for (pfcnt = NO;;) {
57 lineftell = ftell(inf);
58 if (!fgets(lbuf, sizeof(lbuf), inf))
59 return (pfcnt);
60 ++lineno;
61 lbp = lbuf;
62 if (*lbp == '%') /* Ratfor escape to fortran */
63 ++lbp;
64 for (; isspace(*lbp); ++lbp)
65 continue;
66 if (!*lbp)
67 continue;
68 switch (*lbp | ' ') { /* convert to lower-case */
69 case 'c':
70 if (cicmp("complex") || cicmp("character"))
71 takeprec();
72 break;
73 case 'd':
74 if (cicmp("double")) {
75 for (; isspace(*lbp); ++lbp)
76 continue;
77 if (!*lbp)
78 continue;
79 if (cicmp("precision"))
80 break;
81 continue;
82 }
83 break;
84 case 'i':
85 if (cicmp("integer"))
86 takeprec();
87 break;
88 case 'l':
89 if (cicmp("logical"))
90 takeprec();
91 break;
92 case 'r':
93 if (cicmp("real"))
94 takeprec();
95 break;
96 }
97 for (; isspace(*lbp); ++lbp)
98 continue;
99 if (!*lbp)
100 continue;
101 switch (*lbp | ' ') {
102 case 'f':
103 if (cicmp("function"))
104 break;
105 continue;
106 case 'p':
107 if (cicmp("program") || cicmp("procedure"))
108 break;
109 continue;
110 case 's':
111 if (cicmp("subroutine"))
112 break;
113 default:
114 continue;
115 }
116 for (; isspace(*lbp); ++lbp)
117 continue;
118 if (!*lbp)
119 continue;
120 for (cp = lbp + 1; *cp && intoken(*cp); ++cp)
121 continue;
122 if ((cp = lbp + 1))
123 continue;
124 *cp = EOS;
125 (void)strcpy(tok, lbp);
126 getline(); /* process line for ex(1) */
127 pfnote(tok, lineno);
128 pfcnt = YES;
129 }
130 /*NOTREACHED*/
131}
132
133/*
134 * cicmp --
135 * do case-independent strcmp
136 */
137int
138cicmp(cp)
139 char *cp;
140{
141 int len;
142 char *bp;
143
144 for (len = 0, bp = lbp; *cp && (*cp &~ ' ') == (*bp++ &~ ' ');
145 ++cp, ++len)
146 continue;
147 if (!*cp) {
148 lbp += len;
149 return (YES);
150 }
151 return (NO);
152}
153
154static void
155takeprec()
156{
157 for (; isspace(*lbp); ++lbp)
158 continue;
159 if (*lbp == '*') {
160 for (++lbp; isspace(*lbp); ++lbp)
161 continue;
162 if (!isdigit(*lbp))
163 --lbp; /* force failure */
164 else
165 while (isdigit(*++lbp))
166 continue;
167 }
168}