text: /*
   * Copyright (c) 1987, 1993, 1994
   *	The Regents of the University of California.  All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in the
   *    documentation and/or other materials provided with the distribution.
   * 4. Neither the name of the University nor the names of its contributors
   *    may be used to endorse or promote products derived from this software
   *    without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   * SUCH DAMAGE.
   */
  
  #if 0
  #ifndef lint
  static char sccsid[] = "@(#)fortran.c	8.3 (Berkeley) 4/2/94";
  #endif
  #endif
  
  #include <sys/cdefs.h>
  __FBSDID("$FreeBSD$");
  
  #include <ctype.h>
  #include <limits.h>
  #include <stdio.h>
  #include <string.h>
  
  #include "ctags.h"
  
  static void takeprec(void);
  
  char *lbp;				/* line buffer pointer */
  
  int
  PF_funcs(void)
  {
  	bool	pfcnt;			/* pascal/fortran functions found */
  	char	*cp;
  	char	tok[MAXTOKEN];
  
  	for (pfcnt = NO;;) {
  		lineftell = ftell(inf);
  		if (!fgets(lbuf, sizeof(lbuf), inf))
  			return (pfcnt);
  		++lineno;
  		lbp = lbuf;
  		if (*lbp == '%')	/* Ratfor escape to fortran */
  			++lbp;
  		for (; isspace(*lbp); ++lbp)
  			continue;
  		if (!*lbp)
  			continue;
  		switch (*lbp | ' ') {	/* convert to lower-case */
  		case 'c':
  			if (cicmp("complex") || cicmp("character"))
  				takeprec();
  			break;
  		case 'd':
  			if (cicmp("double")) {
  				for (; isspace(*lbp); ++lbp)
  					continue;
  				if (!*lbp)
  					continue;
  				if (cicmp("precision"))
  					break;
  				continue;
  			}
  			break;
  		case 'i':
  			if (cicmp("integer"))
  				takeprec();
  			break;
  		case 'l':
  			if (cicmp("logical"))
  				takeprec();
  			break;
  		case 'r':
  			if (cicmp("real"))
  				takeprec();
  			break;
  		}
  		for (; isspace(*lbp); ++lbp)
  			continue;
  		if (!*lbp)
  			continue;
  		switch (*lbp | ' ') {
  		case 'f':
  			if (cicmp("function"))
  				break;
  			continue;
  		case 'p':
  			if (cicmp("program") || cicmp("procedure"))
  				break;
  			continue;
  		case 's':
  			if (cicmp("subroutine"))
  				break;
  		default:
  			continue;
  		}
  		for (; isspace(*lbp); ++lbp)
  			continue;
  		if (!*lbp)
  			continue;
  		for (cp = lbp + 1; *cp && intoken(*cp); ++cp)
  			continue;
  		if (cp == lbp + 1)
  			continue;
  		*cp = EOS;
  		(void)strlcpy(tok, lbp, sizeof(tok));	/* possible trunc */
  		get_line();			/* process line for ex(1) */
  		pfnote(tok, lineno);
  		pfcnt = YES;
  	}
  	/*NOTREACHED*/
  }
  
  /*
   * cicmp --
   *	do case-independent strcmp
   */
  int
  cicmp(const char *cp)
  {
  	int	len;
  	char	*bp;
  
  	for (len = 0, bp = lbp; *cp && (*cp &~ ' ') == (*bp++ &~ ' ');
  	    ++cp, ++len)
  		continue;
  	if (!*cp) {
  		lbp += len;
  		return (YES);
  	}
  	return (NO);
  }
  
  static void
  takeprec(void)
  {
  	for (; isspace(*lbp); ++lbp)
  		continue;
  	if (*lbp == '*') {
  		for (++lbp; isspace(*lbp); ++lbp)
  			continue;
  		if (!isdigit(*lbp))
  			--lbp;			/* force failure */
  		else
  			while (isdigit(*++lbp))
  				continue;
  	}
  }
  