source: rtems/doc/tools/src2html1.4a/Ctags/fortran.c @ bf09257a

/*
 * Copyright (c) 1987 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.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *      This product includes software developed by the University of
 *      California, Berkeley and its contributors.
 * 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.
 */

#ifndef lint
static char sccsid[] = "@(#)fortran.c   5.5 (Berkeley) 2/26/91";
#endif /* not lint */

#include <stdio.h>
#include <string.h>
#include "ctags.h"

static void takeprec();

char *lbp;                              /* line buffer pointer */

PF_funcs()
{
        register bool   pfcnt;          /* pascal/fortran functions found */
        register char   *cp;
        char    tok[MAXTOKEN],
                *gettoken();

        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);
                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);
                                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);
                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);
                if (!*lbp)
                        continue;
                for (cp = lbp + 1;*cp && intoken(*cp);++cp);
                if (cp = lbp + 1)
                        continue;
                *cp = EOS;
                (void)strcpy(tok,lbp);
                getline();                      /* process line for ex(1) */
                pfnote(tok,lineno);
                pfcnt = YES;
        }
        /*NOTREACHED*/
}

/*
 * cicmp --
 *      do case-independent strcmp
 */
cicmp(cp)
        register char   *cp;
{
        register int    len;
        register char   *bp;

        for (len = 0,bp = lbp;*cp && (*cp &~ ' ') == (*bp++ &~ ' ');
            ++cp,++len);
        if (!*cp) {
                lbp += len;
                return(YES);
        }
        return(NO);
}

static void
takeprec()
{
        for (;isspace(*lbp);++lbp);
        if (*lbp == '*') {
                for (++lbp;isspace(*lbp);++lbp);
                if (!isdigit(*lbp))
                        --lbp;                  /* force failure */
                else
                        while (isdigit(*++lbp));
        }
}