gcc/libgfortran/io/close.c

/* Copyright (C) 2002-2003 Free Software Foundation, Inc.
   Contributed by Andy Vaught

This file is part of the GNU Fortran 95 runtime library (libgfortran).

Libgfortran is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.

Libgfortran is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with Libgfortran; see the file COPYING.  If not, write to
the Free Software Foundation, 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.  */

#include "config.h"
#include "libgfortran.h"
#include "io.h"

typedef enum
{ CLOSE_DELETE, CLOSE_KEEP, CLOSE_UNSPECIFIED }
close_status;

static st_option status_opt[] = {
  {"keep", CLOSE_KEEP},
  {"delete", CLOSE_DELETE},
  {NULL}
};


extern void st_close (void);
export_proto(st_close);

void
st_close (void)
{
  close_status status;
  gfc_unit *u;

  library_start ();

  status = (ioparm.status == NULL) ? CLOSE_UNSPECIFIED :
    find_option (ioparm.status, ioparm.status_len, status_opt,
		 "Bad STATUS parameter in CLOSE statement");

  if (ioparm.library_return != LIBRARY_OK)
    return;

  u = find_unit (ioparm.unit);
  if (u != NULL)
    {
      if (u->flags.status == STATUS_SCRATCH)
	{
	  if (status == CLOSE_KEEP)
	    generate_error (ERROR_BAD_OPTION,
			    "Can't KEEP a scratch file on CLOSE");
	}
      else
	{
	  if (status == CLOSE_DELETE)
	    delete_file (u);
	}

      close_unit (u);
    }

  library_end ();
}