448 lines
11 KiB
C
448 lines
11 KiB
C
/* Copyright (C) 2002, 2003, 2005, 2007 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.
|
|
|
|
In addition to the permissions in the GNU General Public License, the
|
|
Free Software Foundation gives you unlimited permission to link the
|
|
compiled version of this file into combinations with other programs,
|
|
and to distribute those combinations without any restriction coming
|
|
from the use of this file. (The General Public License restrictions
|
|
do apply in other respects; for example, they cover modification of
|
|
the file, and distribution when not linked into a combine
|
|
executable.)
|
|
|
|
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, 51 Franklin Street, Fifth Floor,
|
|
Boston, MA 02110-1301, USA. */
|
|
|
|
|
|
/* Implement the non-IOLENGTH variant of the INQUIRY statement */
|
|
|
|
#include "io.h"
|
|
|
|
|
|
static const char undefined[] = "UNDEFINED";
|
|
|
|
|
|
/* inquire_via_unit()-- Inquiry via unit number. The unit might not exist. */
|
|
|
|
static void
|
|
inquire_via_unit (st_parameter_inquire *iqp, gfc_unit * u)
|
|
{
|
|
const char *p;
|
|
GFC_INTEGER_4 cf = iqp->common.flags;
|
|
|
|
if ((cf & IOPARM_INQUIRE_HAS_EXIST) != 0)
|
|
*iqp->exist = iqp->common.unit >= 0;
|
|
|
|
if ((cf & IOPARM_INQUIRE_HAS_OPENED) != 0)
|
|
*iqp->opened = (u != NULL);
|
|
|
|
if ((cf & IOPARM_INQUIRE_HAS_NUMBER) != 0)
|
|
*iqp->number = (u != NULL) ? u->unit_number : -1;
|
|
|
|
if ((cf & IOPARM_INQUIRE_HAS_NAMED) != 0)
|
|
*iqp->named = (u != NULL && u->flags.status != STATUS_SCRATCH);
|
|
|
|
if ((cf & IOPARM_INQUIRE_HAS_NAME) != 0
|
|
&& u != NULL && u->flags.status != STATUS_SCRATCH)
|
|
fstrcpy (iqp->name, iqp->name_len, u->file, u->file_len);
|
|
|
|
if ((cf & IOPARM_INQUIRE_HAS_ACCESS) != 0)
|
|
{
|
|
if (u == NULL)
|
|
p = undefined;
|
|
else
|
|
switch (u->flags.access)
|
|
{
|
|
case ACCESS_SEQUENTIAL:
|
|
p = "SEQUENTIAL";
|
|
break;
|
|
case ACCESS_DIRECT:
|
|
p = "DIRECT";
|
|
break;
|
|
case ACCESS_STREAM:
|
|
p = "STREAM";
|
|
break;
|
|
default:
|
|
internal_error (&iqp->common, "inquire_via_unit(): Bad access");
|
|
}
|
|
|
|
cf_strcpy (iqp->access, iqp->access_len, p);
|
|
}
|
|
|
|
if ((cf & IOPARM_INQUIRE_HAS_SEQUENTIAL) != 0)
|
|
{
|
|
if (u == NULL)
|
|
p = inquire_sequential (NULL, 0);
|
|
else
|
|
{
|
|
/* disallow an open direct access file to be accessed sequentially */
|
|
if (u->flags.access == ACCESS_DIRECT)
|
|
p = "NO";
|
|
else
|
|
p = inquire_sequential (u->file, u->file_len);
|
|
}
|
|
|
|
cf_strcpy (iqp->sequential, iqp->sequential_len, p);
|
|
}
|
|
|
|
if ((cf & IOPARM_INQUIRE_HAS_DIRECT) != 0)
|
|
{
|
|
p = (u == NULL) ? inquire_direct (NULL, 0) :
|
|
inquire_direct (u->file, u->file_len);
|
|
|
|
cf_strcpy (iqp->direct, iqp->direct_len, p);
|
|
}
|
|
|
|
if ((cf & IOPARM_INQUIRE_HAS_FORM) != 0)
|
|
{
|
|
if (u == NULL)
|
|
p = undefined;
|
|
else
|
|
switch (u->flags.form)
|
|
{
|
|
case FORM_FORMATTED:
|
|
p = "FORMATTED";
|
|
break;
|
|
case FORM_UNFORMATTED:
|
|
p = "UNFORMATTED";
|
|
break;
|
|
default:
|
|
internal_error (&iqp->common, "inquire_via_unit(): Bad form");
|
|
}
|
|
|
|
cf_strcpy (iqp->form, iqp->form_len, p);
|
|
}
|
|
|
|
if ((cf & IOPARM_INQUIRE_HAS_FORMATTED) != 0)
|
|
{
|
|
p = (u == NULL) ? inquire_formatted (NULL, 0) :
|
|
inquire_formatted (u->file, u->file_len);
|
|
|
|
cf_strcpy (iqp->formatted, iqp->formatted_len, p);
|
|
}
|
|
|
|
if ((cf & IOPARM_INQUIRE_HAS_UNFORMATTED) != 0)
|
|
{
|
|
p = (u == NULL) ? inquire_unformatted (NULL, 0) :
|
|
inquire_unformatted (u->file, u->file_len);
|
|
|
|
cf_strcpy (iqp->unformatted, iqp->unformatted_len, p);
|
|
}
|
|
|
|
if ((cf & IOPARM_INQUIRE_HAS_RECL_OUT) != 0)
|
|
*iqp->recl_out = (u != NULL) ? u->recl : 0;
|
|
|
|
if ((cf & IOPARM_INQUIRE_HAS_STRM_POS_OUT) != 0)
|
|
*iqp->strm_pos_out = (u != NULL) ? u->strm_pos : 0;
|
|
|
|
if ((cf & IOPARM_INQUIRE_HAS_NEXTREC) != 0)
|
|
{
|
|
/* This only makes sense in the context of DIRECT access. */
|
|
if (u != NULL && u->flags.access == ACCESS_DIRECT)
|
|
*iqp->nextrec = u->last_record + 1;
|
|
else
|
|
*iqp->nextrec = 0;
|
|
}
|
|
|
|
if ((cf & IOPARM_INQUIRE_HAS_BLANK) != 0)
|
|
{
|
|
if (u == NULL)
|
|
p = undefined;
|
|
else
|
|
switch (u->flags.blank)
|
|
{
|
|
case BLANK_NULL:
|
|
p = "NULL";
|
|
break;
|
|
case BLANK_ZERO:
|
|
p = "ZERO";
|
|
break;
|
|
default:
|
|
internal_error (&iqp->common, "inquire_via_unit(): Bad blank");
|
|
}
|
|
|
|
cf_strcpy (iqp->blank, iqp->blank_len, p);
|
|
}
|
|
|
|
if ((cf & IOPARM_INQUIRE_HAS_POSITION) != 0)
|
|
{
|
|
if (u == NULL || u->flags.access == ACCESS_DIRECT)
|
|
p = undefined;
|
|
else
|
|
switch (u->flags.position)
|
|
{
|
|
case POSITION_REWIND:
|
|
p = "REWIND";
|
|
break;
|
|
case POSITION_APPEND:
|
|
p = "APPEND";
|
|
break;
|
|
case POSITION_ASIS:
|
|
p = "ASIS";
|
|
break;
|
|
default:
|
|
/* if not direct access, it must be
|
|
either REWIND, APPEND, or ASIS.
|
|
ASIS seems to be the best default */
|
|
p = "ASIS";
|
|
break;
|
|
}
|
|
cf_strcpy (iqp->position, iqp->position_len, p);
|
|
}
|
|
|
|
if ((cf & IOPARM_INQUIRE_HAS_ACTION) != 0)
|
|
{
|
|
if (u == NULL)
|
|
p = undefined;
|
|
else
|
|
switch (u->flags.action)
|
|
{
|
|
case ACTION_READ:
|
|
p = "READ";
|
|
break;
|
|
case ACTION_WRITE:
|
|
p = "WRITE";
|
|
break;
|
|
case ACTION_READWRITE:
|
|
p = "READWRITE";
|
|
break;
|
|
default:
|
|
internal_error (&iqp->common, "inquire_via_unit(): Bad action");
|
|
}
|
|
|
|
cf_strcpy (iqp->action, iqp->action_len, p);
|
|
}
|
|
|
|
if ((cf & IOPARM_INQUIRE_HAS_READ) != 0)
|
|
{
|
|
p = (u == NULL) ? inquire_read (NULL, 0) :
|
|
inquire_read (u->file, u->file_len);
|
|
|
|
cf_strcpy (iqp->read, iqp->read_len, p);
|
|
}
|
|
|
|
if ((cf & IOPARM_INQUIRE_HAS_WRITE) != 0)
|
|
{
|
|
p = (u == NULL) ? inquire_write (NULL, 0) :
|
|
inquire_write (u->file, u->file_len);
|
|
|
|
cf_strcpy (iqp->write, iqp->write_len, p);
|
|
}
|
|
|
|
if ((cf & IOPARM_INQUIRE_HAS_READWRITE) != 0)
|
|
{
|
|
p = (u == NULL) ? inquire_readwrite (NULL, 0) :
|
|
inquire_readwrite (u->file, u->file_len);
|
|
|
|
cf_strcpy (iqp->readwrite, iqp->readwrite_len, p);
|
|
}
|
|
|
|
if ((cf & IOPARM_INQUIRE_HAS_DELIM) != 0)
|
|
{
|
|
if (u == NULL || u->flags.form != FORM_FORMATTED)
|
|
p = undefined;
|
|
else
|
|
switch (u->flags.delim)
|
|
{
|
|
case DELIM_NONE:
|
|
p = "NONE";
|
|
break;
|
|
case DELIM_QUOTE:
|
|
p = "QUOTE";
|
|
break;
|
|
case DELIM_APOSTROPHE:
|
|
p = "APOSTROPHE";
|
|
break;
|
|
default:
|
|
internal_error (&iqp->common, "inquire_via_unit(): Bad delim");
|
|
}
|
|
|
|
cf_strcpy (iqp->delim, iqp->delim_len, p);
|
|
}
|
|
|
|
if ((cf & IOPARM_INQUIRE_HAS_PAD) != 0)
|
|
{
|
|
if (u == NULL || u->flags.form != FORM_FORMATTED)
|
|
p = undefined;
|
|
else
|
|
switch (u->flags.pad)
|
|
{
|
|
case PAD_NO:
|
|
p = "NO";
|
|
break;
|
|
case PAD_YES:
|
|
p = "YES";
|
|
break;
|
|
default:
|
|
internal_error (&iqp->common, "inquire_via_unit(): Bad pad");
|
|
}
|
|
|
|
cf_strcpy (iqp->pad, iqp->pad_len, p);
|
|
}
|
|
|
|
if ((cf & IOPARM_INQUIRE_HAS_CONVERT) != 0)
|
|
{
|
|
if (u == NULL)
|
|
p = undefined;
|
|
else
|
|
switch (u->flags.convert)
|
|
{
|
|
/* l8_to_l4_offset is 0 for little-endian, 1 for big-endian. */
|
|
case CONVERT_NATIVE:
|
|
p = l8_to_l4_offset ? "BIG_ENDIAN" : "LITTLE_ENDIAN";
|
|
break;
|
|
|
|
case CONVERT_SWAP:
|
|
p = l8_to_l4_offset ? "LITTLE_ENDIAN" : "BIG_ENDIAN";
|
|
break;
|
|
|
|
default:
|
|
internal_error (&iqp->common, "inquire_via_unit(): Bad convert");
|
|
}
|
|
|
|
cf_strcpy (iqp->convert, iqp->convert_len, p);
|
|
}
|
|
}
|
|
|
|
|
|
/* inquire_via_filename()-- Inquiry via filename. This subroutine is
|
|
* only used if the filename is *not* connected to a unit number. */
|
|
|
|
static void
|
|
inquire_via_filename (st_parameter_inquire *iqp)
|
|
{
|
|
const char *p;
|
|
GFC_INTEGER_4 cf = iqp->common.flags;
|
|
|
|
if ((cf & IOPARM_INQUIRE_HAS_EXIST) != 0)
|
|
*iqp->exist = file_exists (iqp->file, iqp->file_len);
|
|
|
|
if ((cf & IOPARM_INQUIRE_HAS_OPENED) != 0)
|
|
*iqp->opened = 0;
|
|
|
|
if ((cf & IOPARM_INQUIRE_HAS_NUMBER) != 0)
|
|
*iqp->number = -1;
|
|
|
|
if ((cf & IOPARM_INQUIRE_HAS_NAMED) != 0)
|
|
*iqp->named = 1;
|
|
|
|
if ((cf & IOPARM_INQUIRE_HAS_NAME) != 0)
|
|
fstrcpy (iqp->name, iqp->name_len, iqp->file, iqp->file_len);
|
|
|
|
if ((cf & IOPARM_INQUIRE_HAS_ACCESS) != 0)
|
|
cf_strcpy (iqp->access, iqp->access_len, undefined);
|
|
|
|
if ((cf & IOPARM_INQUIRE_HAS_SEQUENTIAL) != 0)
|
|
{
|
|
p = inquire_sequential (iqp->file, iqp->file_len);
|
|
cf_strcpy (iqp->sequential, iqp->sequential_len, p);
|
|
}
|
|
|
|
if ((cf & IOPARM_INQUIRE_HAS_DIRECT) != 0)
|
|
{
|
|
p = inquire_direct (iqp->file, iqp->file_len);
|
|
cf_strcpy (iqp->direct, iqp->direct_len, p);
|
|
}
|
|
|
|
if ((cf & IOPARM_INQUIRE_HAS_FORM) != 0)
|
|
cf_strcpy (iqp->form, iqp->form_len, undefined);
|
|
|
|
if ((cf & IOPARM_INQUIRE_HAS_FORMATTED) != 0)
|
|
{
|
|
p = inquire_formatted (iqp->file, iqp->file_len);
|
|
cf_strcpy (iqp->formatted, iqp->formatted_len, p);
|
|
}
|
|
|
|
if ((cf & IOPARM_INQUIRE_HAS_UNFORMATTED) != 0)
|
|
{
|
|
p = inquire_unformatted (iqp->file, iqp->file_len);
|
|
cf_strcpy (iqp->unformatted, iqp->unformatted_len, p);
|
|
}
|
|
|
|
if ((cf & IOPARM_INQUIRE_HAS_RECL_OUT) != 0)
|
|
*iqp->recl_out = 0;
|
|
|
|
if ((cf & IOPARM_INQUIRE_HAS_NEXTREC) != 0)
|
|
*iqp->nextrec = 0;
|
|
|
|
if ((cf & IOPARM_INQUIRE_HAS_BLANK) != 0)
|
|
cf_strcpy (iqp->blank, iqp->blank_len, undefined);
|
|
|
|
if ((cf & IOPARM_INQUIRE_HAS_POSITION) != 0)
|
|
cf_strcpy (iqp->position, iqp->position_len, undefined);
|
|
|
|
if ((cf & IOPARM_INQUIRE_HAS_ACCESS) != 0)
|
|
cf_strcpy (iqp->access, iqp->access_len, undefined);
|
|
|
|
if ((cf & IOPARM_INQUIRE_HAS_READ) != 0)
|
|
{
|
|
p = inquire_read (iqp->file, iqp->file_len);
|
|
cf_strcpy (iqp->read, iqp->read_len, p);
|
|
}
|
|
|
|
if ((cf & IOPARM_INQUIRE_HAS_WRITE) != 0)
|
|
{
|
|
p = inquire_write (iqp->file, iqp->file_len);
|
|
cf_strcpy (iqp->write, iqp->write_len, p);
|
|
}
|
|
|
|
if ((cf & IOPARM_INQUIRE_HAS_READWRITE) != 0)
|
|
{
|
|
p = inquire_read (iqp->file, iqp->file_len);
|
|
cf_strcpy (iqp->readwrite, iqp->readwrite_len, p);
|
|
}
|
|
|
|
if ((cf & IOPARM_INQUIRE_HAS_DELIM) != 0)
|
|
cf_strcpy (iqp->delim, iqp->delim_len, undefined);
|
|
|
|
if ((cf & IOPARM_INQUIRE_HAS_PAD) != 0)
|
|
cf_strcpy (iqp->pad, iqp->pad_len, undefined);
|
|
}
|
|
|
|
|
|
/* Library entry point for the INQUIRE statement (non-IOLENGTH
|
|
form). */
|
|
|
|
extern void st_inquire (st_parameter_inquire *);
|
|
export_proto(st_inquire);
|
|
|
|
void
|
|
st_inquire (st_parameter_inquire *iqp)
|
|
{
|
|
gfc_unit *u;
|
|
|
|
library_start (&iqp->common);
|
|
|
|
if ((iqp->common.flags & IOPARM_INQUIRE_HAS_FILE) == 0)
|
|
{
|
|
u = find_unit (iqp->common.unit);
|
|
inquire_via_unit (iqp, u);
|
|
}
|
|
else
|
|
{
|
|
u = find_file (iqp->file, iqp->file_len);
|
|
if (u == NULL)
|
|
inquire_via_filename (iqp);
|
|
else
|
|
inquire_via_unit (iqp, u);
|
|
}
|
|
if (u != NULL)
|
|
unlock_unit (u);
|
|
|
|
library_end ();
|
|
}
|