[gcc.git] / libgfortran / io / inquire.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.  */


/* 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 ();
}
Commit	Line	Data
6de9cd9a DN	1	/* Copyright (C) 2002-2003 Free Software Foundation, Inc.
	2	Contributed by Andy Vaught
	3
	4	This file is part of the GNU Fortran 95 runtime library (libgfortran).
	5
	6	Libgfortran is free software; you can redistribute it and/or modify
	7	it under the terms of the GNU General Public License as published by
	8	the Free Software Foundation; either version 2, or (at your option)
	9	any later version.
	10
	11	Libgfortran is distributed in the hope that it will be useful,
	12	but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	14	GNU General Public License for more details.
	15
	16	You should have received a copy of the GNU General Public License
	17	along with Libgfortran; see the file COPYING. If not, write to
	18	the Free Software Foundation, 59 Temple Place - Suite 330,
	19	Boston, MA 02111-1307, USA. */
	20
	21
	22	/* Implement the non-IOLENGTH variant of the INQUIRY statement */
	23
	24	#include "config.h"
	25	#include "libgfortran.h"
	26	#include "io.h"
	27
	28
	29	static char undefined[] = "UNDEFINED";
	30
	31
	32	/* inquire_via_unit()-- Inquiry via unit number. The unit might not exist. */
	33
	34	static void
	35	inquire_via_unit (unit_t * u)
	36	{
	37	const char *p;
	38
	39	if (ioparm.exist != NULL)
	40	*ioparm.exist = (u != NULL);
	41
	42	if (ioparm.opened != NULL)
	43	*ioparm.opened = (u != NULL);
	44
	45	if (ioparm.number != NULL)
	46	*ioparm.number = (u != NULL) ? u->unit_number : -1;
	47
	48	if (ioparm.named != NULL)
	49	*ioparm.named = (u != NULL && u->flags.status != STATUS_SCRATCH);
	50
	51	if (ioparm.name != NULL && u != NULL && u->flags.status != STATUS_SCRATCH)
	52	fstrcpy (ioparm.name, ioparm.name_len, u->file, u->file_len);
	53
	54	if (ioparm.access != NULL)
	55	{
	56	if (u == NULL)
	57	p = undefined;
	58	else
	59	switch (u->flags.access)
	60	{
	61	case ACCESS_SEQUENTIAL:
	62	p = "SEQUENTIAL";
	63	break;
	64	case ACCESS_DIRECT:
65	p = "DIRECT";
66	break;
67	default:
68	internal_error ("inquire_via_unit(): Bad access");
69	}
70
71	cf_strcpy (ioparm.access, ioparm.access_len, p);
72	}
73
74	if (ioparm.sequential != NULL)
75	{
76	p = (u == NULL) ? inquire_sequential (NULL, 0) :
77	inquire_sequential (u->file, u->file_len);
78
79	cf_strcpy (ioparm.sequential, ioparm.sequential_len, p);
80	}
81
82	if (ioparm.direct != NULL)
83	{
84	p = (u == NULL) ? inquire_direct (NULL, 0) :
85	inquire_direct (u->file, u->file_len);
86
87	cf_strcpy (ioparm.direct, ioparm.direct_len, p);
88	}
89
90	if (ioparm.form != NULL)
91	{
92	if (u == NULL)
93	p = undefined;
94	else
95	switch (u->flags.form)
96	{
97	case FORM_FORMATTED:
98	p = "FORMATTED";
99	break;
100	case FORM_UNFORMATTED:
101	p = "UNFORMATTED";
102	break;
103	default:
104	internal_error ("inquire_via_unit(): Bad form");
105	}
106
107	cf_strcpy (ioparm.form, ioparm.form_len, p);
108	}
109
110	if (ioparm.formatted != NULL)
111	{
112	p = (u == NULL) ? inquire_formatted (NULL, 0) :
113	inquire_formatted (u->file, u->file_len);
114
115	cf_strcpy (ioparm.formatted, ioparm.formatted_len, p);
116	}
117
118	if (ioparm.unformatted != NULL)
119	{
120	p = (u == NULL) ? inquire_unformatted (NULL, 0) :
121	inquire_unformatted (u->file, u->file_len);
122
123	cf_strcpy (ioparm.unformatted, ioparm.unformatted_len, p);
124	}
125
126	if (ioparm.recl_out != NULL)
127	*ioparm.recl_out = (u != NULL) ? u->recl : 0;
128
129	if (ioparm.nextrec != NULL)
130	*ioparm.nextrec = (u != NULL) ? u->last_record + 1 : 0;
131
132	if (ioparm.blank != NULL)
133	{
134	if (u == NULL)
135	p = undefined;
136	else
137	switch (u->flags.blank)
138	{
139	case BLANK_NULL:
140	p = "NULL";
141	break;
142	case BLANK_ZERO:
143	p = "ZERO";
144	break;
145	default:
146	internal_error ("inquire_via_unit(): Bad blank");
147	}
148
149	cf_strcpy (ioparm.blank, ioparm.blank_len, p);
150	}
151
152	if (ioparm.position != NULL)
153	{
154	if (u == NULL \|\| u->flags.access == ACCESS_DIRECT)
155	p = undefined;
156	else
157	{
158	p = NULL; /* TODO: Try to decode what the standard says... */
159	}
160
161	cf_strcpy (ioparm.blank, ioparm.blank_len, p);
162	}
163
164	if (ioparm.action != NULL)
165	{
166	if (u == NULL)
167	p = undefined;
168	else
169	switch (u->flags.action)
170	{
171	case ACTION_READ:
172	p = "READ";
173	break;
174	case ACTION_WRITE:
175	p = "WRITE";
176	break;
177	case ACTION_READWRITE:
178	p = "READWRITE";
179	break;
180	default:
181	internal_error ("inquire_via_unit(): Bad action");
182	}
183
184	cf_strcpy (ioparm.action, ioparm.action_len, p);
185	}
186
187	if (ioparm.read != NULL)
188	{
189	p = (u == NULL) ? inquire_read (NULL, 0) :
190	inquire_read (u->file, u->file_len);
191
192	cf_strcpy (ioparm.read, ioparm.read_len, p);
193	}
194
195	if (ioparm.write != NULL)
196	{
197	p = (u == NULL) ? inquire_write (NULL, 0) :
198	inquire_write (u->file, u->file_len);
199
200	cf_strcpy (ioparm.write, ioparm.write_len, p);
201	}
202
203	if (ioparm.readwrite != NULL)
204	{
205	p = (u == NULL) ? inquire_readwrite (NULL, 0) :
206	inquire_readwrite (u->file, u->file_len);
207
208	cf_strcpy (ioparm.readwrite, ioparm.readwrite_len, p);
209	}
210
211	if (ioparm.delim != NULL)
212	{
213	if (u == NULL \|\| u->flags.form != FORM_FORMATTED)
214	p = undefined;
215	else
216	switch (u->flags.delim)
217	{
218	case DELIM_NONE:
219	p = "NONE";
220	break;
221	case DELIM_QUOTE:
222	p = "QUOTE";
223	break;
224	case DELIM_APOSTROPHE:
225	p = "APOSTROPHE";
226	break;
227	default:
228	internal_error ("inquire_via_unit(): Bad delim");
229	}
230
231	cf_strcpy (ioparm.access, ioparm.access_len, p);
232	}
233
234	if (ioparm.pad != NULL)
235	{
236	if (u == NULL \|\| u->flags.form != FORM_FORMATTED)
237	p = undefined;
238	else
239	switch (u->flags.pad)
240	{
241	case PAD_NO:
242	p = "NO";
243	break;
244	case PAD_YES:
245	p = "YES";
246	break;
247	default:
248	internal_error ("inquire_via_unit(): Bad pad");
249	}
250
251	cf_strcpy (ioparm.pad, ioparm.pad_len, p);
252	}
253	}
254
255
256	/* inquire_via_filename()-- Inquiry via filename. This subroutine is
257	* only used if the filename is not connected to a unit number. */
258
259	static void
260	inquire_via_filename (void)
261	{
262	const char *p;
263
264	if (ioparm.exist != NULL)
265	*ioparm.exist = file_exists ();
266
267	if (ioparm.opened != NULL)
268	*ioparm.opened = 0;
269
270	if (ioparm.number != NULL)
271	*ioparm.number = -1;
272
273	if (ioparm.named != NULL)
274	*ioparm.named = 1;
275
276	if (ioparm.name != NULL)
277	fstrcpy (ioparm.name, ioparm.name_len, ioparm.file, ioparm.file_len);
278
279	if (ioparm.access != NULL)
280	cf_strcpy (ioparm.access, ioparm.access_len, undefined);
281
282	if (ioparm.sequential != NULL)
283	{
284	p = inquire_sequential (ioparm.file, ioparm.file_len);
285	cf_strcpy (ioparm.sequential, ioparm.sequential_len, p);
286	}
287
288	if (ioparm.direct != NULL)
289	{
290	p = inquire_direct (ioparm.file, ioparm.file_len);
291	cf_strcpy (ioparm.direct, ioparm.direct_len, p);
292	}
293
294	if (ioparm.form != NULL)
295	cf_strcpy (ioparm.form, ioparm.form_len, undefined);
296
297	if (ioparm.formatted != NULL)
298	{
299	p = inquire_formatted (ioparm.file, ioparm.file_len);
300	cf_strcpy (ioparm.formatted, ioparm.formatted_len, p);
301	}
302
303	if (ioparm.unformatted != NULL)
304	{
305	p = inquire_unformatted (ioparm.file, ioparm.file_len);
306	cf_strcpy (ioparm.unformatted, ioparm.unformatted_len, p);
307	}
308
309	if (ioparm.recl_out != NULL)
310	*ioparm.recl_out = 0;
311
312	if (ioparm.nextrec != NULL)
313	*ioparm.nextrec = 0;
314
315	if (ioparm.blank != NULL)
316	cf_strcpy (ioparm.blank, ioparm.blank_len, undefined);
317
318	if (ioparm.position != NULL)
319	cf_strcpy (ioparm.position, ioparm.position_len, undefined);
320
321	if (ioparm.access != NULL)
322	cf_strcpy (ioparm.access, ioparm.access_len, undefined);
323
324	if (ioparm.read != NULL)
325	{
326	p = inquire_read (ioparm.file, ioparm.file_len);
327	cf_strcpy (ioparm.read, ioparm.read_len, p);
328	}
329
330	if (ioparm.write != NULL)
331	{
332	p = inquire_write (ioparm.file, ioparm.file_len);
333	cf_strcpy (ioparm.write, ioparm.write_len, p);
334	}
335
336	if (ioparm.readwrite != NULL)
337	{
338	p = inquire_read (ioparm.file, ioparm.file_len);
339	cf_strcpy (ioparm.readwrite, ioparm.readwrite_len, p);
340	}
341
342	if (ioparm.delim != NULL)
343	cf_strcpy (ioparm.delim, ioparm.delim_len, undefined);
344
345	if (ioparm.pad != NULL)
346	cf_strcpy (ioparm.pad, ioparm.pad_len, undefined);
347
348	}
349
350
351
352	void
353	st_inquire (void)
354	{
355	unit_t *u;
356
357	library_start ();
358
359	if (ioparm.file == NULL)
360	inquire_via_unit (find_unit (ioparm.unit));
361	else
362	{
363	u = find_file ();
364	if (u == NULL)
365	inquire_via_filename ();
366	else
367	inquire_via_unit (u);
368	}
369
370	library_end ();
371	}