1 /* $NetBSD: fortran.c,v 1.6 2002/01/31 19:26:35 tv 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. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 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 1.6 2002/01/31 19:26:35 tv 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 __P((void)); 53 54 char *lbp; /* line buffer pointer */ 55 56 int 57 PF_funcs() 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)strcpy(tok, lbp); 133 getline(); /* 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 145 cicmp(cp) 146 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() 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