694 lines
16 KiB
C
694 lines
16 KiB
C
/* Copyright (C) 2002, 2003, 2005, 2007, 2009, 2010
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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 3, or (at your option)
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any later version.
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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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Under Section 7 of GPL version 3, you are granted additional
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permissions described in the GCC Runtime Library Exception, version
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3.1, as published by the Free Software Foundation.
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You should have received a copy of the GNU General Public License and
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a copy of the GCC Runtime Library Exception along with this program;
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see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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<http://www.gnu.org/licenses/>. */
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/* Implement the non-IOLENGTH variant of the INQUIRY statement */
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#include "io.h"
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#include "unix.h"
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#include <string.h>
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static const 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 (st_parameter_inquire *iqp, gfc_unit * u)
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{
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const char *p;
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GFC_INTEGER_4 cf = iqp->common.flags;
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if ((cf & IOPARM_INQUIRE_HAS_EXIST) != 0)
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{
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*iqp->exist = (iqp->common.unit >= 0
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&& iqp->common.unit <= GFC_INTEGER_4_HUGE);
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if ((cf & IOPARM_INQUIRE_HAS_FILE) == 0)
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{
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if (!(*iqp->exist))
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*iqp->common.iostat = LIBERROR_BAD_UNIT;
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*iqp->exist = *iqp->exist
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&& (*iqp->common.iostat != LIBERROR_BAD_UNIT);
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}
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}
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if ((cf & IOPARM_INQUIRE_HAS_OPENED) != 0)
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*iqp->opened = (u != NULL);
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if ((cf & IOPARM_INQUIRE_HAS_NUMBER) != 0)
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*iqp->number = (u != NULL) ? u->unit_number : -1;
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if ((cf & IOPARM_INQUIRE_HAS_NAMED) != 0)
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*iqp->named = (u != NULL && u->flags.status != STATUS_SCRATCH);
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if ((cf & IOPARM_INQUIRE_HAS_NAME) != 0
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&& u != NULL && u->flags.status != STATUS_SCRATCH)
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{
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#ifdef HAVE_TTYNAME
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if (u->unit_number == options.stdin_unit
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|| u->unit_number == options.stdout_unit
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|| u->unit_number == options.stderr_unit)
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{
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char * tmp = ttyname (((unix_stream *) u->s)->fd);
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if (tmp != NULL)
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{
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int tmplen = strlen (tmp);
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fstrcpy (iqp->name, iqp->name_len, tmp, tmplen);
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}
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else /* If ttyname does not work, go with the default. */
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fstrcpy (iqp->name, iqp->name_len, u->file, u->file_len);
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}
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else
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#endif
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fstrcpy (iqp->name, iqp->name_len, u->file, u->file_len);
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}
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if ((cf & IOPARM_INQUIRE_HAS_ACCESS) != 0)
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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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case ACCESS_STREAM:
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p = "STREAM";
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break;
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default:
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internal_error (&iqp->common, "inquire_via_unit(): Bad access");
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}
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cf_strcpy (iqp->access, iqp->access_len, p);
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}
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if ((cf & IOPARM_INQUIRE_HAS_SEQUENTIAL) != 0)
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{
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if (u == NULL)
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p = inquire_sequential (NULL, 0);
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else
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switch (u->flags.access)
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{
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case ACCESS_DIRECT:
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case ACCESS_STREAM:
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p = "NO";
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break;
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case ACCESS_SEQUENTIAL:
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p = "YES";
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break;
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default:
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internal_error (&iqp->common, "inquire_via_unit(): Bad access");
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}
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cf_strcpy (iqp->sequential, iqp->sequential_len, p);
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}
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if ((cf & IOPARM_INQUIRE_HAS_DIRECT) != 0)
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{
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if (u == NULL)
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p = inquire_direct (NULL, 0);
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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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case ACCESS_STREAM:
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p = "NO";
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break;
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case ACCESS_DIRECT:
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p = "YES";
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break;
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default:
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internal_error (&iqp->common, "inquire_via_unit(): Bad access");
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}
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cf_strcpy (iqp->direct, iqp->direct_len, p);
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}
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if ((cf & IOPARM_INQUIRE_HAS_FORM) != 0)
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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 (&iqp->common, "inquire_via_unit(): Bad form");
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}
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cf_strcpy (iqp->form, iqp->form_len, p);
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}
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if ((cf & IOPARM_INQUIRE_HAS_FORMATTED) != 0)
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{
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if (u == NULL)
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p = inquire_formatted (NULL, 0);
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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 = "YES";
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break;
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case FORM_UNFORMATTED:
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p = "NO";
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break;
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default:
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internal_error (&iqp->common, "inquire_via_unit(): Bad form");
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}
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cf_strcpy (iqp->formatted, iqp->formatted_len, p);
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}
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if ((cf & IOPARM_INQUIRE_HAS_UNFORMATTED) != 0)
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{
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if (u == NULL)
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p = inquire_unformatted (NULL, 0);
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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 = "NO";
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break;
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case FORM_UNFORMATTED:
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p = "YES";
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break;
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default:
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internal_error (&iqp->common, "inquire_via_unit(): Bad form");
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}
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cf_strcpy (iqp->unformatted, iqp->unformatted_len, p);
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}
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if ((cf & IOPARM_INQUIRE_HAS_RECL_OUT) != 0)
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*iqp->recl_out = (u != NULL) ? u->recl : 0;
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if ((cf & IOPARM_INQUIRE_HAS_STRM_POS_OUT) != 0)
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*iqp->strm_pos_out = (u != NULL) ? u->strm_pos : 0;
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if ((cf & IOPARM_INQUIRE_HAS_NEXTREC) != 0)
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{
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/* This only makes sense in the context of DIRECT access. */
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if (u != NULL && u->flags.access == ACCESS_DIRECT)
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*iqp->nextrec = u->last_record + 1;
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else
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*iqp->nextrec = 0;
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}
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if ((cf & IOPARM_INQUIRE_HAS_BLANK) != 0)
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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.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 (&iqp->common, "inquire_via_unit(): Bad blank");
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}
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cf_strcpy (iqp->blank, iqp->blank_len, p);
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}
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if ((cf & IOPARM_INQUIRE_HAS_PAD) != 0)
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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_YES:
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p = "YES";
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break;
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case PAD_NO:
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p = "NO";
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break;
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default:
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internal_error (&iqp->common, "inquire_via_unit(): Bad pad");
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}
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cf_strcpy (iqp->pad, iqp->pad_len, p);
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}
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if (cf & IOPARM_INQUIRE_HAS_FLAGS2)
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{
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GFC_INTEGER_4 cf2 = iqp->flags2;
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if ((cf2 & IOPARM_INQUIRE_HAS_PENDING) != 0)
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*iqp->pending = 0;
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if ((cf2 & IOPARM_INQUIRE_HAS_ID) != 0)
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*iqp->id = 0;
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if ((cf2 & IOPARM_INQUIRE_HAS_ENCODING) != 0)
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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.encoding)
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{
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case ENCODING_DEFAULT:
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p = "UNKNOWN";
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break;
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case ENCODING_UTF8:
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p = "UTF-8";
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break;
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default:
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internal_error (&iqp->common, "inquire_via_unit(): Bad encoding");
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}
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cf_strcpy (iqp->encoding, iqp->encoding_len, p);
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}
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if ((cf2 & IOPARM_INQUIRE_HAS_DECIMAL) != 0)
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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.decimal)
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{
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case DECIMAL_POINT:
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p = "POINT";
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break;
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case DECIMAL_COMMA:
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p = "COMMA";
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break;
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default:
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internal_error (&iqp->common, "inquire_via_unit(): Bad comma");
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}
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cf_strcpy (iqp->decimal, iqp->decimal_len, p);
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}
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if ((cf2 & IOPARM_INQUIRE_HAS_ASYNCHRONOUS) != 0)
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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.async)
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{
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case ASYNC_YES:
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p = "YES";
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break;
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case ASYNC_NO:
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p = "NO";
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break;
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default:
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internal_error (&iqp->common, "inquire_via_unit(): Bad async");
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}
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cf_strcpy (iqp->asynchronous, iqp->asynchronous_len, p);
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}
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if ((cf2 & IOPARM_INQUIRE_HAS_SIGN) != 0)
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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.sign)
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{
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case SIGN_PROCDEFINED:
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p = "PROCESSOR_DEFINED";
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break;
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case SIGN_SUPPRESS:
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p = "SUPPRESS";
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break;
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case SIGN_PLUS:
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p = "PLUS";
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break;
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default:
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internal_error (&iqp->common, "inquire_via_unit(): Bad sign");
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}
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cf_strcpy (iqp->sign, iqp->sign_len, p);
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}
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if ((cf2 & IOPARM_INQUIRE_HAS_ROUND) != 0)
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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.round)
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{
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case ROUND_UP:
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p = "UP";
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break;
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case ROUND_DOWN:
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p = "DOWN";
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break;
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case ROUND_ZERO:
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p = "ZERO";
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break;
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case ROUND_NEAREST:
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p = "NEAREST";
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break;
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case ROUND_COMPATIBLE:
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p = "COMPATIBLE";
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break;
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case ROUND_PROCDEFINED:
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p = "PROCESSOR_DEFINED";
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break;
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default:
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internal_error (&iqp->common, "inquire_via_unit(): Bad round");
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}
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cf_strcpy (iqp->round, iqp->round_len, p);
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}
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if ((cf2 & IOPARM_INQUIRE_HAS_SIZE) != 0)
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{
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if (u == NULL)
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*iqp->size = -1;
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else
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*iqp->size = file_size (u->file, (gfc_charlen_type) u->file_len);
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}
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}
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if ((cf & IOPARM_INQUIRE_HAS_POSITION) != 0)
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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 (iqp->position, iqp->position_len, p);
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}
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if ((cf & IOPARM_INQUIRE_HAS_ACTION) != 0)
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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 (&iqp->common, "inquire_via_unit(): Bad action");
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}
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cf_strcpy (iqp->action, iqp->action_len, p);
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}
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if ((cf & IOPARM_INQUIRE_HAS_READ) != 0)
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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 (iqp->read, iqp->read_len, p);
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}
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if ((cf & IOPARM_INQUIRE_HAS_WRITE) != 0)
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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 (iqp->write, iqp->write_len, p);
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}
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if ((cf & IOPARM_INQUIRE_HAS_READWRITE) != 0)
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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 (iqp->readwrite, iqp->readwrite_len, p);
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}
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if ((cf & IOPARM_INQUIRE_HAS_DELIM) != 0)
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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 (&iqp->common, "inquire_via_unit(): Bad delim");
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}
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cf_strcpy (iqp->delim, iqp->delim_len, p);
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}
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if ((cf & IOPARM_INQUIRE_HAS_PAD) != 0)
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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 (&iqp->common, "inquire_via_unit(): Bad pad");
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}
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cf_strcpy (iqp->pad, iqp->pad_len, p);
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}
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if ((cf & IOPARM_INQUIRE_HAS_CONVERT) != 0)
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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.convert)
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{
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/* big_endian is 0 for little-endian, 1 for big-endian. */
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case GFC_CONVERT_NATIVE:
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p = big_endian ? "BIG_ENDIAN" : "LITTLE_ENDIAN";
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break;
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case GFC_CONVERT_SWAP:
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p = big_endian ? "LITTLE_ENDIAN" : "BIG_ENDIAN";
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break;
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default:
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internal_error (&iqp->common, "inquire_via_unit(): Bad convert");
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}
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cf_strcpy (iqp->convert, iqp->convert_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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|
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static void
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inquire_via_filename (st_parameter_inquire *iqp)
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{
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const char *p;
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GFC_INTEGER_4 cf = iqp->common.flags;
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if ((cf & IOPARM_INQUIRE_HAS_EXIST) != 0)
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*iqp->exist = file_exists (iqp->file, iqp->file_len);
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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 = "UNKNOWN";
|
|
cf_strcpy (iqp->sequential, iqp->sequential_len, p);
|
|
}
|
|
|
|
if ((cf & IOPARM_INQUIRE_HAS_DIRECT) != 0)
|
|
{
|
|
p = "UNKNOWN";
|
|
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 = "UNKNOWN";
|
|
cf_strcpy (iqp->formatted, iqp->formatted_len, p);
|
|
}
|
|
|
|
if ((cf & IOPARM_INQUIRE_HAS_UNFORMATTED) != 0)
|
|
{
|
|
p = "UNKNOWN";
|
|
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_PAD) != 0)
|
|
cf_strcpy (iqp->pad, iqp->pad_len, undefined);
|
|
|
|
if (cf & IOPARM_INQUIRE_HAS_FLAGS2)
|
|
{
|
|
GFC_INTEGER_4 cf2 = iqp->flags2;
|
|
|
|
if ((cf2 & IOPARM_INQUIRE_HAS_ENCODING) != 0)
|
|
cf_strcpy (iqp->encoding, iqp->encoding_len, undefined);
|
|
|
|
if ((cf2 & IOPARM_INQUIRE_HAS_DELIM) != 0)
|
|
cf_strcpy (iqp->delim, iqp->delim_len, undefined);
|
|
|
|
if ((cf2 & IOPARM_INQUIRE_HAS_DECIMAL) != 0)
|
|
cf_strcpy (iqp->decimal, iqp->decimal_len, undefined);
|
|
|
|
if ((cf2 & IOPARM_INQUIRE_HAS_DELIM) != 0)
|
|
cf_strcpy (iqp->delim, iqp->delim_len, undefined);
|
|
|
|
if ((cf2 & IOPARM_INQUIRE_HAS_PAD) != 0)
|
|
cf_strcpy (iqp->pad, iqp->pad_len, undefined);
|
|
|
|
if ((cf2 & IOPARM_INQUIRE_HAS_ENCODING) != 0)
|
|
cf_strcpy (iqp->encoding, iqp->encoding_len, undefined);
|
|
|
|
if ((cf2 & IOPARM_INQUIRE_HAS_SIZE) != 0)
|
|
*iqp->size = file_size (iqp->file, iqp->file_len);
|
|
}
|
|
|
|
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);
|
|
}
|
|
}
|
|
|
|
|
|
/* 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 ();
|
|
}
|