aboutsummaryrefslogtreecommitdiff
path: root/gdb/cli-out.c
blob: 380b662e045e58674c6eebdc7ee7b3fb5b1d6b18 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
/* Output generating routines for GDB CLI.

   Copyright (C) 1999-2013 Free Software Foundation, Inc.

   Contributed by Cygnus Solutions.
   Written by Fernando Nasser for Cygnus.

   This file is part of GDB.

   This program 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 3 of the License, or
   (at your option) any later version.

   This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.  */

#include "defs.h"
#include "ui-out.h"
#include "cli-out.h"
#include <string.h>
#include "gdb_assert.h"
#include "vec.h"

typedef struct cli_ui_out_data cli_out_data;


/* Prototypes for local functions */

static void cli_text (struct ui_out *uiout, const char *string);

static void field_separator (void);

static void out_field_fmt (struct ui_out *uiout, int fldno,
			   const char *fldname,
			   const char *format,...) ATTRIBUTE_PRINTF (4, 5);

/* These are the CLI output functions */

/* Mark beginning of a table */

static void
cli_table_begin (struct ui_out *uiout, int nbrofcols,
		 int nr_rows,
		 const char *tblid)
{
  cli_out_data *data = ui_out_data (uiout);

  if (nr_rows == 0)
    data->suppress_output = 1;
  else
    /* Only the table suppresses the output and, fortunately, a table
       is not a recursive data structure.  */
    gdb_assert (data->suppress_output == 0);
}

/* Mark beginning of a table body */

static void
cli_table_body (struct ui_out *uiout)
{
  cli_out_data *data = ui_out_data (uiout);

  if (data->suppress_output)
    return;
  /* first, close the table header line */
  cli_text (uiout, "\n");
}

/* Mark end of a table */

static void
cli_table_end (struct ui_out *uiout)
{
  cli_out_data *data = ui_out_data (uiout);

  data->suppress_output = 0;
}

/* Specify table header */

static void
cli_table_header (struct ui_out *uiout, int width, enum ui_align alignment,
		  const char *col_name,
		  const char *colhdr)
{
  cli_out_data *data = ui_out_data (uiout);

  if (data->suppress_output)
    return;

  /* Always go through the function pointer (virtual function call).
     We may have been extended.  */
  uo_field_string (uiout, 0, width, alignment, 0, colhdr);
}

/* Mark beginning of a list */

static void
cli_begin (struct ui_out *uiout,
	   enum ui_out_type type,
	   int level,
	   const char *id)
{
  cli_out_data *data = ui_out_data (uiout);

  if (data->suppress_output)
    return;
}

/* Mark end of a list */

static void
cli_end (struct ui_out *uiout,
	 enum ui_out_type type,
	 int level)
{
  cli_out_data *data = ui_out_data (uiout);

  if (data->suppress_output)
    return;
}

/* output an int field */

static void
cli_field_int (struct ui_out *uiout, int fldno, int width,
	       enum ui_align alignment,
	       const char *fldname, int value)
{
  char buffer[20];	/* FIXME: how many chars long a %d can become? */
  cli_out_data *data = ui_out_data (uiout);

  if (data->suppress_output)
    return;
  xsnprintf (buffer, sizeof (buffer), "%d", value);

  /* Always go through the function pointer (virtual function call).
     We may have been extended.  */
  uo_field_string (uiout, fldno, width, alignment, fldname, buffer);
}

/* used to ommit a field */

static void
cli_field_skip (struct ui_out *uiout, int fldno, int width,
		enum ui_align alignment,
		const char *fldname)
{
  cli_out_data *data = ui_out_data (uiout);

  if (data->suppress_output)
    return;

  /* Always go through the function pointer (virtual function call).
     We may have been extended.  */
  uo_field_string (uiout, fldno, width, alignment, fldname, "");
}

/* other specific cli_field_* end up here so alignment and field
   separators are both handled by cli_field_string */

static void
cli_field_string (struct ui_out *uiout,
		  int fldno,
		  int width,
		  enum ui_align align,
		  const char *fldname,
		  const char *string)
{
  int before = 0;
  int after = 0;
  cli_out_data *data = ui_out_data (uiout);

  if (data->suppress_output)
    return;

  if ((align != ui_noalign) && string)
    {
      before = width - strlen (string);
      if (before <= 0)
	before = 0;
      else
	{
	  if (align == ui_right)
	    after = 0;
	  else if (align == ui_left)
	    {
	      after = before;
	      before = 0;
	    }
	  else
	    /* ui_center */
	    {
	      after = before / 2;
	      before -= after;
	    }
	}
    }

  if (before)
    ui_out_spaces (uiout, before);
  if (string)
    out_field_fmt (uiout, fldno, fldname, "%s", string);
  if (after)
    ui_out_spaces (uiout, after);

  if (align != ui_noalign)
    field_separator ();
}

/* This is the only field function that does not align.  */

static void ATTRIBUTE_PRINTF (6, 0)
cli_field_fmt (struct ui_out *uiout, int fldno,
	       int width, enum ui_align align,
	       const char *fldname,
	       const char *format,
	       va_list args)
{
  cli_out_data *data = ui_out_data (uiout);
  struct ui_file *stream;

  if (data->suppress_output)
    return;

  stream = VEC_last (ui_filep, data->streams);
  vfprintf_filtered (stream, format, args);

  if (align != ui_noalign)
    field_separator ();
}

static void
cli_spaces (struct ui_out *uiout, int numspaces)
{
  cli_out_data *data = ui_out_data (uiout);
  struct ui_file *stream;

  if (data->suppress_output)
    return;

  stream = VEC_last (ui_filep, data->streams);
  print_spaces_filtered (numspaces, stream);
}

static void
cli_text (struct ui_out *uiout, const char *string)
{
  cli_out_data *data = ui_out_data (uiout);
  struct ui_file *stream;

  if (data->suppress_output)
    return;

  stream = VEC_last (ui_filep, data->streams);
  fputs_filtered (string, stream);
}

static void ATTRIBUTE_PRINTF (3, 0)
cli_message (struct ui_out *uiout, int verbosity,
	     const char *format, va_list args)
{
  cli_out_data *data = ui_out_data (uiout);

  if (data->suppress_output)
    return;

  if (ui_out_get_verblvl (uiout) >= verbosity)
    {
      struct ui_file *stream = VEC_last (ui_filep, data->streams);

      vfprintf_unfiltered (stream, format, args);
    }
}

static void
cli_wrap_hint (struct ui_out *uiout, char *identstring)
{
  cli_out_data *data = ui_out_data (uiout);

  if (data->suppress_output)
    return;
  wrap_here (identstring);
}

static void
cli_flush (struct ui_out *uiout)
{
  cli_out_data *data = ui_out_data (uiout);
  struct ui_file *stream = VEC_last (ui_filep, data->streams);

  gdb_flush (stream);
}

/* OUTSTREAM as non-NULL will push OUTSTREAM on the stack of output streams
   and make it therefore active.  OUTSTREAM as NULL will pop the last pushed
   output stream; it is an internal error if it does not exist.  */

static int
cli_redirect (struct ui_out *uiout, struct ui_file *outstream)
{
  cli_out_data *data = ui_out_data (uiout);

  if (outstream != NULL)
    VEC_safe_push (ui_filep, data->streams, outstream);
  else
    VEC_pop (ui_filep, data->streams);

  return 0;
}

/* local functions */

/* Like cli_field_fmt, but takes a variable number of args
   and makes a va_list and does not insert a separator.  */

/* VARARGS */
static void
out_field_fmt (struct ui_out *uiout, int fldno,
	       const char *fldname,
	       const char *format,...)
{
  cli_out_data *data = ui_out_data (uiout);
  struct ui_file *stream = VEC_last (ui_filep, data->streams);
  va_list args;

  va_start (args, format);
  vfprintf_filtered (stream, format, args);

  va_end (args);
}

/* Access to ui_out format private members.  */

static void
field_separator (void)
{
  cli_out_data *data = ui_out_data (current_uiout);
  struct ui_file *stream = VEC_last (ui_filep, data->streams);

  fputc_filtered (' ', stream);
}

/* This is the CLI ui-out implementation functions vector */

/* FIXME: This can be initialized dynamically after default is set to
   handle initial output in main.c */

struct ui_out_impl cli_ui_out_impl =
{
  cli_table_begin,
  cli_table_body,
  cli_table_end,
  cli_table_header,
  cli_begin,
  cli_end,
  cli_field_int,
  cli_field_skip,
  cli_field_string,
  cli_field_fmt,
  cli_spaces,
  cli_text,
  cli_message,
  cli_wrap_hint,
  cli_flush,
  cli_redirect,
  0,
  0, /* Does not need MI hacks (i.e. needs CLI hacks).  */
};

/* Constructor for a `cli_out_data' object.  */

void
cli_out_data_ctor (cli_out_data *self, struct ui_file *stream)
{
  gdb_assert (stream != NULL);

  self->streams = NULL;
  VEC_safe_push (ui_filep, self->streams, stream);

  self->suppress_output = 0;
}

/* Initialize private members at startup.  */

struct ui_out *
cli_out_new (struct ui_file *stream)
{
  int flags = ui_source_list;
  cli_out_data *data = XMALLOC (cli_out_data);

  cli_out_data_ctor (data, stream);
  return ui_out_new (&cli_ui_out_impl, data, flags);
}

struct ui_file *
cli_out_set_stream (struct ui_out *uiout, struct ui_file *stream)
{
  cli_out_data *data = ui_out_data (uiout);
  struct ui_file *old;
  
  old = VEC_pop (ui_filep, data->streams);
  VEC_quick_push (ui_filep, data->streams, stream);

  return old;
}