write.c

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/*

  Copyright (C) 2000, 2001, Silicon Graphics, Inc.  All Rights Reserved.

  This program is free software; you can redistribute it and/or modify it
  under the terms of version 2.1 of the GNU Lesser General Public License 
  as published by the Free Software Foundation.

  This program is distributed in the hope that it would be useful, but
  WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  

  Further, this software is distributed without any warranty that it is
  free of the rightful claim of any third person regarding infringement 
  or the like.  Any license provided herein, whether implied or 
  otherwise, applies only to this software file.  Patent licenses, if
  any, provided herein do not apply to combinations of this program with 
  other software, or any other product whatsoever.  

  You should have received a copy of the GNU Lesser General Public 
  License along with this program; if not, write the Free Software 
  Foundation, Inc., 59 Temple Place - Suite 330, Boston MA 02111-1307, 
  USA.

  Contact information:  Silicon Graphics, Inc., 1600 Amphitheatre Pky,
  Mountain View, CA 94043, or:

  http://www.sgi.com

  For further information regarding this notice, see:

  http://oss.sgi.com/projects/GenInfo/NoticeExplan

*/



#pragma ident "@(#) libf/fio/write.c    92.2    06/21/99 10:37:55"

/*
 *      write words
 */

#include <errno.h>
#include <foreign.h>
#include <fortran.h>
#include <liberrno.h>
#include "fio.h"

#define UBC     4       /* argument number for optional ubc parameter */
#define STATUS  5       /* argument number for optional status parameter */

#undef  WRITE

static void __WRITE();

/*
 *      Write words, full record mode
 */

_f_int
WRITE(
        _f_int  *unump,
        _f_int  *uda,
        _f_int  *wordsp,
        _f_int  *ubc,
        _f_int  *status)
{
        _f_int  locubc, *ubcp;
        _f_int  *statp;

        if (_numargs() < UBC) {
                locubc  = 0;
                ubcp    = &locubc;
        }
        else
                ubcp    = ubc;

        statp   = (_numargs() < STATUS) ? NULL : status;

        __WRITE(FULL, unump, uda, wordsp, ubcp, statp);

        return(0);
}

/*
 *      Write words, partial record mode
 */

void
WRITEP(
        _f_int  *unump,
        _f_int  *uda,
        _f_int  *wordsp,
        _f_int  *ubc,
        _f_int  *status)
{
        _f_int  locubc, *ubcp;
        _f_int  *statp;

        if (_numargs() < UBC) {
                locubc  = 0;
                ubcp    = &locubc;
        }
        else
                ubcp    = ubc;

        statp   = (_numargs() < STATUS) ? NULL : status;

        __WRITE(PARTIAL, unump, uda, wordsp, ubcp, statp);

        return;
}

static void
__WRITE(
        int     fulp,
        _f_int  *unump,
        _f_int  *uda,
        _f_int  *wordsp,
        _f_int  *ubc,
        _f_int  *status)
{
        register int    ret;
        register int    errn;
        int             wstat;
        int             wubc;
        register unum_t unum;
        unit            *cup;
        type_packet     tip;
        struct fiostate cfs;

        unum    = *unump;
        wubc    = *ubc;
        errn    = 0;

        STMT_BEGIN(unum, 0, T_WSU, NULL, &cfs, cup);
/*
 *      If not connected, do an implicit open.
 */
        if (cup == NULL) {
                int     ostat;

                cup     = _imp_open(&cfs, SEQ, UNF, unum, (status != NULL),
                                &ostat);

                if (cup == NULL) {
                        errn    = ostat;
                        goto done;
                }
        }

        if (!cup->ok_wr_seq_unf) {
                errn    = _get_mismatch_error(1, T_WSU, cup, &cfs);
                goto done;
        }

        cup->uwrt       = 1;

        if (cup->uend) {
                /*
                 * If positioned after an endfile, and the file does not
                 * support multiple endfiles, a write is invalid.
                 */
                if (!cup->umultfil && !cup->uspcproc) {
                        errn    = FEWRAFEN;
                        goto done;
                }
                /*
                 * If a logical endfile record had just been read,
                 * replace it with a physical endfile record before
                 * starting the current data record.
                 */
                if ((cup->uend == LOGICAL_ENDFILE) && !(cup->uspcproc)) {
                        if (XRCALL(cup->ufp.fdc, weofrtn)cup->ufp.fdc,
                         &cup->uffsw) < 0) {
                                errn    = cup->uffsw.sw_error;
                                goto done;
                        }
                }
                cup->uend       = BEFORE_ENDFILE;
        }

        tip.type90      = DVTYPE_TYPELESS;
        tip.type77      = -1;
        tip.intlen      = sizeof(long) << 3;
        tip.extlen      = tip.intlen;
        tip.elsize      = sizeof(long);
        tip.cnvindx     = 0;
        tip.count       = *wordsp;
        tip.stride      = 1;

        ret     = _fwwd(cup, uda, &tip, fulp, &wubc, (long *) NULL, &wstat);

        if ( ret == IOERR ) {
                errn    = errno;
                goto done;
        }

        if (status != NULL)
                *status = 0;

done:
        if (errn != 0) {
                if (status == NULL)
                        _ferr(&cfs, errn);      
                else
                        *status = errn; 
        }

        *ubc    = wubc;

        STMT_END(cup, TF_WRITE, NULL, &cfs);

        return;
}