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-rw-r--r--libgfortran/io/inquire.c371
1 files changed, 371 insertions, 0 deletions
diff --git a/libgfortran/io/inquire.c b/libgfortran/io/inquire.c
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+/* 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. */
+
+
+/* Implement the non-IOLENGTH variant of the INQUIRY statement */
+
+#include "config.h"
+#include "libgfortran.h"
+#include "io.h"
+
+
+static char undefined[] = "UNDEFINED";
+
+
+/* inquire_via_unit()-- Inquiry via unit number. The unit might not exist. */
+
+static void
+inquire_via_unit (unit_t * u)
+{
+ const char *p;
+
+ if (ioparm.exist != NULL)
+ *ioparm.exist = (u != NULL);
+
+ if (ioparm.opened != NULL)
+ *ioparm.opened = (u != NULL);
+
+ if (ioparm.number != NULL)
+ *ioparm.number = (u != NULL) ? u->unit_number : -1;
+
+ if (ioparm.named != NULL)
+ *ioparm.named = (u != NULL && u->flags.status != STATUS_SCRATCH);
+
+ if (ioparm.name != NULL && u != NULL && u->flags.status != STATUS_SCRATCH)
+ fstrcpy (ioparm.name, ioparm.name_len, u->file, u->file_len);
+
+ if (ioparm.access != NULL)
+ {
+ if (u == NULL)
+ p = undefined;
+ else
+ switch (u->flags.access)
+ {
+ case ACCESS_SEQUENTIAL:
+ p = "SEQUENTIAL";
+ break;
+ case ACCESS_DIRECT:
+ p = "DIRECT";
+ break;
+ default:
+ internal_error ("inquire_via_unit(): Bad access");
+ }
+
+ cf_strcpy (ioparm.access, ioparm.access_len, p);
+ }
+
+ if (ioparm.sequential != NULL)
+ {
+ p = (u == NULL) ? inquire_sequential (NULL, 0) :
+ inquire_sequential (u->file, u->file_len);
+
+ cf_strcpy (ioparm.sequential, ioparm.sequential_len, p);
+ }
+
+ if (ioparm.direct != NULL)
+ {
+ p = (u == NULL) ? inquire_direct (NULL, 0) :
+ inquire_direct (u->file, u->file_len);
+
+ cf_strcpy (ioparm.direct, ioparm.direct_len, p);
+ }
+
+ if (ioparm.form != NULL)
+ {
+ 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 ("inquire_via_unit(): Bad form");
+ }
+
+ cf_strcpy (ioparm.form, ioparm.form_len, p);
+ }
+
+ if (ioparm.formatted != NULL)
+ {
+ p = (u == NULL) ? inquire_formatted (NULL, 0) :
+ inquire_formatted (u->file, u->file_len);
+
+ cf_strcpy (ioparm.formatted, ioparm.formatted_len, p);
+ }
+
+ if (ioparm.unformatted != NULL)
+ {
+ p = (u == NULL) ? inquire_unformatted (NULL, 0) :
+ inquire_unformatted (u->file, u->file_len);
+
+ cf_strcpy (ioparm.unformatted, ioparm.unformatted_len, p);
+ }
+
+ if (ioparm.recl_out != NULL)
+ *ioparm.recl_out = (u != NULL) ? u->recl : 0;
+
+ if (ioparm.nextrec != NULL)
+ *ioparm.nextrec = (u != NULL) ? u->last_record + 1 : 0;
+
+ if (ioparm.blank != NULL)
+ {
+ 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 ("inquire_via_unit(): Bad blank");
+ }
+
+ cf_strcpy (ioparm.blank, ioparm.blank_len, p);
+ }
+
+ if (ioparm.position != NULL)
+ {
+ if (u == NULL || u->flags.access == ACCESS_DIRECT)
+ p = undefined;
+ else
+ {
+ p = NULL; /* TODO: Try to decode what the standard says... */
+ }
+
+ cf_strcpy (ioparm.blank, ioparm.blank_len, p);
+ }
+
+ if (ioparm.action != NULL)
+ {
+ 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 ("inquire_via_unit(): Bad action");
+ }
+
+ cf_strcpy (ioparm.action, ioparm.action_len, p);
+ }
+
+ if (ioparm.read != NULL)
+ {
+ p = (u == NULL) ? inquire_read (NULL, 0) :
+ inquire_read (u->file, u->file_len);
+
+ cf_strcpy (ioparm.read, ioparm.read_len, p);
+ }
+
+ if (ioparm.write != NULL)
+ {
+ p = (u == NULL) ? inquire_write (NULL, 0) :
+ inquire_write (u->file, u->file_len);
+
+ cf_strcpy (ioparm.write, ioparm.write_len, p);
+ }
+
+ if (ioparm.readwrite != NULL)
+ {
+ p = (u == NULL) ? inquire_readwrite (NULL, 0) :
+ inquire_readwrite (u->file, u->file_len);
+
+ cf_strcpy (ioparm.readwrite, ioparm.readwrite_len, p);
+ }
+
+ if (ioparm.delim != NULL)
+ {
+ 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 ("inquire_via_unit(): Bad delim");
+ }
+
+ cf_strcpy (ioparm.access, ioparm.access_len, p);
+ }
+
+ if (ioparm.pad != NULL)
+ {
+ 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 ("inquire_via_unit(): Bad pad");
+ }
+
+ cf_strcpy (ioparm.pad, ioparm.pad_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 (void)
+{
+ const char *p;
+
+ if (ioparm.exist != NULL)
+ *ioparm.exist = file_exists ();
+
+ if (ioparm.opened != NULL)
+ *ioparm.opened = 0;
+
+ if (ioparm.number != NULL)
+ *ioparm.number = -1;
+
+ if (ioparm.named != NULL)
+ *ioparm.named = 1;
+
+ if (ioparm.name != NULL)
+ fstrcpy (ioparm.name, ioparm.name_len, ioparm.file, ioparm.file_len);
+
+ if (ioparm.access != NULL)
+ cf_strcpy (ioparm.access, ioparm.access_len, undefined);
+
+ if (ioparm.sequential != NULL)
+ {
+ p = inquire_sequential (ioparm.file, ioparm.file_len);
+ cf_strcpy (ioparm.sequential, ioparm.sequential_len, p);
+ }
+
+ if (ioparm.direct != NULL)
+ {
+ p = inquire_direct (ioparm.file, ioparm.file_len);
+ cf_strcpy (ioparm.direct, ioparm.direct_len, p);
+ }
+
+ if (ioparm.form != NULL)
+ cf_strcpy (ioparm.form, ioparm.form_len, undefined);
+
+ if (ioparm.formatted != NULL)
+ {
+ p = inquire_formatted (ioparm.file, ioparm.file_len);
+ cf_strcpy (ioparm.formatted, ioparm.formatted_len, p);
+ }
+
+ if (ioparm.unformatted != NULL)
+ {
+ p = inquire_unformatted (ioparm.file, ioparm.file_len);
+ cf_strcpy (ioparm.unformatted, ioparm.unformatted_len, p);
+ }
+
+ if (ioparm.recl_out != NULL)
+ *ioparm.recl_out = 0;
+
+ if (ioparm.nextrec != NULL)
+ *ioparm.nextrec = 0;
+
+ if (ioparm.blank != NULL)
+ cf_strcpy (ioparm.blank, ioparm.blank_len, undefined);
+
+ if (ioparm.position != NULL)
+ cf_strcpy (ioparm.position, ioparm.position_len, undefined);
+
+ if (ioparm.access != NULL)
+ cf_strcpy (ioparm.access, ioparm.access_len, undefined);
+
+ if (ioparm.read != NULL)
+ {
+ p = inquire_read (ioparm.file, ioparm.file_len);
+ cf_strcpy (ioparm.read, ioparm.read_len, p);
+ }
+
+ if (ioparm.write != NULL)
+ {
+ p = inquire_write (ioparm.file, ioparm.file_len);
+ cf_strcpy (ioparm.write, ioparm.write_len, p);
+ }
+
+ if (ioparm.readwrite != NULL)
+ {
+ p = inquire_read (ioparm.file, ioparm.file_len);
+ cf_strcpy (ioparm.readwrite, ioparm.readwrite_len, p);
+ }
+
+ if (ioparm.delim != NULL)
+ cf_strcpy (ioparm.delim, ioparm.delim_len, undefined);
+
+ if (ioparm.pad != NULL)
+ cf_strcpy (ioparm.pad, ioparm.pad_len, undefined);
+
+}
+
+
+
+void
+st_inquire (void)
+{
+ unit_t *u;
+
+ library_start ();
+
+ if (ioparm.file == NULL)
+ inquire_via_unit (find_unit (ioparm.unit));
+ else
+ {
+ u = find_file ();
+ if (u == NULL)
+ inquire_via_filename ();
+ else
+ inquire_via_unit (u);
+ }
+
+ library_end ();
+}
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