b1a807057e
2004-01-22 Bud Davis <bdavis9659@comcast.net>
PR fortran/19314
* io/inquire.c(inquire_via_unit): implement POSITION=.
* io/transfer.c(next_record): update position for
INQUIRE.
* io/rewind.c(st_rewind): update position for
INQUIRE.
* gfortran.dg/inquire_5.f90: New test.
From-SVN: r94060
405 lines
9.4 KiB
C
405 lines
9.4 KiB
C
/* Copyright (C) 2002-2003 Free Software Foundation, Inc.
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Contributed by Andy Vaught
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This file is part of the GNU Fortran 95 runtime library (libgfortran).
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Libgfortran is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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In addition to the permissions in the GNU General Public License, the
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Free Software Foundation gives you unlimited permission to link the
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compiled version of this file into combinations with other programs,
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and to distribute those combinations without any restriction coming
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from the use of this file. (The General Public License restrictions
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do apply in other respects; for example, they cover modification of
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the file, and distribution when not linked into a combine
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executable.)
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Libgfortran is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Libgfortran; see the file COPYING. If not, write to
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the Free Software Foundation, 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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/* Implement the non-IOLENGTH variant of the INQUIRY statement */
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#include "config.h"
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#include "libgfortran.h"
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#include "io.h"
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static char undefined[] = "UNDEFINED";
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/* inquire_via_unit()-- Inquiry via unit number. The unit might not exist. */
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static void
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inquire_via_unit (gfc_unit * u)
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{
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const char *p;
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if (ioparm.exist != NULL)
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*ioparm.exist = (u != NULL);
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if (ioparm.opened != NULL)
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*ioparm.opened = (u != NULL);
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if (ioparm.number != NULL)
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*ioparm.number = (u != NULL) ? u->unit_number : -1;
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if (ioparm.named != NULL)
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*ioparm.named = (u != NULL && u->flags.status != STATUS_SCRATCH);
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if (ioparm.name != NULL && u != NULL && u->flags.status != STATUS_SCRATCH)
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fstrcpy (ioparm.name, ioparm.name_len, u->file, u->file_len);
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if (ioparm.access != NULL)
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{
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if (u == NULL)
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p = undefined;
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else
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switch (u->flags.access)
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{
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case ACCESS_SEQUENTIAL:
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p = "SEQUENTIAL";
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break;
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case ACCESS_DIRECT:
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p = "DIRECT";
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break;
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default:
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internal_error ("inquire_via_unit(): Bad access");
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}
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cf_strcpy (ioparm.access, ioparm.access_len, p);
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}
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if (ioparm.sequential != NULL)
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{
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/* disallow an open direct access file to be accessed
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sequentially */
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if (u->flags.access==ACCESS_DIRECT)
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p = "NO";
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else
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p = (u == NULL) ? inquire_sequential (NULL, 0) :
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inquire_sequential (u->file, u->file_len);
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cf_strcpy (ioparm.sequential, ioparm.sequential_len, p);
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}
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if (ioparm.direct != NULL)
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{
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p = (u == NULL) ? inquire_direct (NULL, 0) :
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inquire_direct (u->file, u->file_len);
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cf_strcpy (ioparm.direct, ioparm.direct_len, p);
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}
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if (ioparm.form != NULL)
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{
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if (u == NULL)
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p = undefined;
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else
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switch (u->flags.form)
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{
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case FORM_FORMATTED:
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p = "FORMATTED";
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break;
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case FORM_UNFORMATTED:
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p = "UNFORMATTED";
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break;
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default:
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internal_error ("inquire_via_unit(): Bad form");
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}
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cf_strcpy (ioparm.form, ioparm.form_len, p);
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}
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if (ioparm.formatted != NULL)
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{
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p = (u == NULL) ? inquire_formatted (NULL, 0) :
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inquire_formatted (u->file, u->file_len);
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cf_strcpy (ioparm.formatted, ioparm.formatted_len, p);
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}
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if (ioparm.unformatted != NULL)
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{
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p = (u == NULL) ? inquire_unformatted (NULL, 0) :
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inquire_unformatted (u->file, u->file_len);
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cf_strcpy (ioparm.unformatted, ioparm.unformatted_len, p);
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}
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if (ioparm.recl_out != NULL)
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*ioparm.recl_out = (u != NULL) ? u->recl : 0;
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if (ioparm.nextrec != NULL)
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*ioparm.nextrec = (u != NULL) ? u->last_record + 1 : 0;
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if (ioparm.blank != NULL)
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{
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if (u == NULL)
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p = undefined;
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else
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switch (u->flags.blank)
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{
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case BLANK_NULL:
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p = "NULL";
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break;
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case BLANK_ZERO:
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p = "ZERO";
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break;
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default:
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internal_error ("inquire_via_unit(): Bad blank");
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}
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cf_strcpy (ioparm.blank, ioparm.blank_len, p);
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}
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if (ioparm.position != NULL)
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{
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if (u == NULL || u->flags.access == ACCESS_DIRECT)
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p = undefined;
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else
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switch (u->flags.position)
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{
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case POSITION_REWIND:
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p = "REWIND";
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break;
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case POSITION_APPEND:
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p = "APPEND";
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break;
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case POSITION_ASIS:
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p = "ASIS";
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break;
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default:
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/* if not direct access, it must be
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either REWIND, APPEND, or ASIS.
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ASIS seems to be the best default */
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p = "ASIS";
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break;
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}
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cf_strcpy (ioparm.position, ioparm.position_len, p);
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}
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if (ioparm.action != NULL)
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{
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if (u == NULL)
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p = undefined;
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else
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switch (u->flags.action)
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{
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case ACTION_READ:
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p = "READ";
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break;
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case ACTION_WRITE:
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p = "WRITE";
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break;
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case ACTION_READWRITE:
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p = "READWRITE";
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break;
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default:
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internal_error ("inquire_via_unit(): Bad action");
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}
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cf_strcpy (ioparm.action, ioparm.action_len, p);
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}
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if (ioparm.read != NULL)
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{
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p = (u == NULL) ? inquire_read (NULL, 0) :
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inquire_read (u->file, u->file_len);
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cf_strcpy (ioparm.read, ioparm.read_len, p);
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}
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if (ioparm.write != NULL)
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{
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p = (u == NULL) ? inquire_write (NULL, 0) :
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inquire_write (u->file, u->file_len);
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cf_strcpy (ioparm.write, ioparm.write_len, p);
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}
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if (ioparm.readwrite != NULL)
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{
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p = (u == NULL) ? inquire_readwrite (NULL, 0) :
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inquire_readwrite (u->file, u->file_len);
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cf_strcpy (ioparm.readwrite, ioparm.readwrite_len, p);
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}
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if (ioparm.delim != NULL)
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{
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if (u == NULL || u->flags.form != FORM_FORMATTED)
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p = undefined;
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else
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switch (u->flags.delim)
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{
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case DELIM_NONE:
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p = "NONE";
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break;
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case DELIM_QUOTE:
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p = "QUOTE";
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break;
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case DELIM_APOSTROPHE:
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p = "APOSTROPHE";
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break;
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default:
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internal_error ("inquire_via_unit(): Bad delim");
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}
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cf_strcpy (ioparm.access, ioparm.access_len, p);
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}
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if (ioparm.pad != NULL)
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{
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if (u == NULL || u->flags.form != FORM_FORMATTED)
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p = undefined;
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else
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switch (u->flags.pad)
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{
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case PAD_NO:
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p = "NO";
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break;
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case PAD_YES:
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p = "YES";
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break;
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default:
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internal_error ("inquire_via_unit(): Bad pad");
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}
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cf_strcpy (ioparm.pad, ioparm.pad_len, p);
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}
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}
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/* inquire_via_filename()-- Inquiry via filename. This subroutine is
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* only used if the filename is *not* connected to a unit number. */
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static void
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inquire_via_filename (void)
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{
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const char *p;
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if (ioparm.exist != NULL)
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*ioparm.exist = file_exists ();
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if (ioparm.opened != NULL)
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*ioparm.opened = 0;
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if (ioparm.number != NULL)
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*ioparm.number = -1;
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if (ioparm.named != NULL)
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*ioparm.named = 1;
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if (ioparm.name != NULL)
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fstrcpy (ioparm.name, ioparm.name_len, ioparm.file, ioparm.file_len);
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if (ioparm.access != NULL)
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cf_strcpy (ioparm.access, ioparm.access_len, undefined);
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if (ioparm.sequential != NULL)
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{
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p = inquire_sequential (ioparm.file, ioparm.file_len);
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cf_strcpy (ioparm.sequential, ioparm.sequential_len, p);
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}
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if (ioparm.direct != NULL)
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{
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p = inquire_direct (ioparm.file, ioparm.file_len);
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cf_strcpy (ioparm.direct, ioparm.direct_len, p);
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}
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if (ioparm.form != NULL)
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cf_strcpy (ioparm.form, ioparm.form_len, undefined);
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if (ioparm.formatted != NULL)
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{
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p = inquire_formatted (ioparm.file, ioparm.file_len);
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cf_strcpy (ioparm.formatted, ioparm.formatted_len, p);
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}
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if (ioparm.unformatted != NULL)
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{
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p = inquire_unformatted (ioparm.file, ioparm.file_len);
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cf_strcpy (ioparm.unformatted, ioparm.unformatted_len, p);
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}
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if (ioparm.recl_out != NULL)
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*ioparm.recl_out = 0;
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if (ioparm.nextrec != NULL)
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*ioparm.nextrec = 0;
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if (ioparm.blank != NULL)
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cf_strcpy (ioparm.blank, ioparm.blank_len, undefined);
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if (ioparm.position != NULL)
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cf_strcpy (ioparm.position, ioparm.position_len, undefined);
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if (ioparm.access != NULL)
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cf_strcpy (ioparm.access, ioparm.access_len, undefined);
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if (ioparm.read != NULL)
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{
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p = inquire_read (ioparm.file, ioparm.file_len);
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cf_strcpy (ioparm.read, ioparm.read_len, p);
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}
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if (ioparm.write != NULL)
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{
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p = inquire_write (ioparm.file, ioparm.file_len);
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cf_strcpy (ioparm.write, ioparm.write_len, p);
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}
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if (ioparm.readwrite != NULL)
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{
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p = inquire_read (ioparm.file, ioparm.file_len);
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cf_strcpy (ioparm.readwrite, ioparm.readwrite_len, p);
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}
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if (ioparm.delim != NULL)
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cf_strcpy (ioparm.delim, ioparm.delim_len, undefined);
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if (ioparm.pad != NULL)
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cf_strcpy (ioparm.pad, ioparm.pad_len, undefined);
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}
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/* Library entry point for the INQUIRE statement (non-IOLENGTH
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form). */
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extern void st_inquire (void);
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export_proto(st_inquire);
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void
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st_inquire (void)
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{
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gfc_unit *u;
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library_start ();
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if (ioparm.file == NULL)
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inquire_via_unit (find_unit (ioparm.unit));
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else
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{
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u = find_file ();
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if (u == NULL)
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inquire_via_filename ();
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else
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inquire_via_unit (u);
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}
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library_end ();
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}
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