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      1 /*	$NetBSD: fortran.c,v 1.12 2019/02/03 03:19:29 mrg 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 1.12 2019/02/03 03:19:29 mrg 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
     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 			/* FALLTHROUGH */
    121 		default:
    122 			continue;
    123 		}
    124 		for (; isspace((unsigned char)*lbp); ++lbp)
    125 			continue;
    126 		if (!*lbp)
    127 			continue;
    128 		for (cp = lbp + 1; *cp && intoken(*cp); ++cp)
    129 			continue;
    130 		if ((cp = lbp + 1) != NULL)
    131 			continue;
    132 		*cp = EOS;
    133 		(void)strlcpy(tok, lbp, sizeof(tok));
    134 		get_line();			/* process line for ex(1) */
    135 		pfnote(tok, lineno);
    136 		pfcnt = YES;
    137 	}
    138 	/*NOTREACHED*/
    139 }
    140 
    141 /*
    142  * cicmp --
    143  *	do case-independent strcmp
    144  */
    145 int
    146 cicmp(const char *cp)
    147 {
    148 	int	len;
    149 	char	*bp;
    150 
    151 	for (len = 0, bp = lbp; *cp && (*cp &~ ' ') == (*bp++ &~ ' ');
    152 	    ++cp, ++len)
    153 		continue;
    154 	if (!*cp) {
    155 		lbp += len;
    156 		return (YES);
    157 	}
    158 	return (NO);
    159 }
    160 
    161 static void
    162 takeprec(void)
    163 {
    164 	for (; isspace((unsigned char)*lbp); ++lbp)
    165 		continue;
    166 	if (*lbp == '*') {
    167 		for (++lbp; isspace((unsigned char)*lbp); ++lbp)
    168 			continue;
    169 		if (!isdigit((unsigned char)*lbp))
    170 			--lbp;			/* force failure */
    171 		else
    172 			while (isdigit((unsigned char)*++lbp))
    173 				continue;
    174 	}
    175 }
    176