gen/common/file_decim.c

	file_decim.c revision 7c478bd95313f5f23a4c958a745db2134aa03244
/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License, Version 1.0 only
 * (the "License").  You may not use this file except in compliance
 * with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
#pragma ident   "%Z%%M% %I% %E% SMI"

/*
 * Copyright (c) 1988 by Sun Microsystems, Inc.
 */

#include <ctype.h>
#include <stdio.h>
#ifndef PRE41
#include <locale.h>
#endif
#include "base_conversion.h"

void
file_to_decimal(ppc, nmax, fortran_conventions, pd, pform, pechar, pf, pnread)
    char          **ppc;
    int             nmax;
    int             fortran_conventions;
    decimal_record *pd;
    enum decimal_string_form *pform;
    char          **pechar;
    FILE           *pf;
    int            *pnread;

{
    register char  *cp = *ppc;
    register int    current;
    register int    nread = 1;  /* Number of characters read so far. */
    char           *good = cp - 1;  /* End of known good token. */
    char           *cp0 = cp;

    current = getc(pf); /* Initialize buffer. */
    *cp = current;

#define ATEOF current
#define CURRENT current
#define NEXT \
       if (nread < nmax) \
               { cp++ ; current = getc(pf) ; *cp = current ; nread++ ;} \
       else \
               { current = NULL ; } ;

#include "char_to_decimal.h"
#undef CURRENT
#undef NEXT

    if (nread < nmax) {
        while (cp >= *ppc) {    /* Push back as many excess
                     * characters as possible. */
            if (*cp != EOF) {   /* Can't push back EOF. */
                if (ungetc(*cp, pf) == EOF)
                    break;
            } cp--;
            nread--;
        }
    }
    cp++;
    *cp = 0;        /* Terminating null. */
    *pnread = nread;

}