summaryrefslogtreecommitdiffhomepage
path: root/mixgtk/mixgtk_cmd_dispatcher.c
blob: 12d11d9589aab8f6bd38160387bb4b7d8a08577e (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
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
/* -*-c-*- -------------- mixgtk_cmd_dispatcher.c :
 * Implementation of the functions declared in mixgtk_cmd_dispatcher.h
 * ------------------------------------------------------------------
 * Copyright (C) 2001, 2002, 2004, 2006 Free Software Foundation, Inc.
 *
 * 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 2 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, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 */

#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <ctype.h>
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>

#include <mixlib/mix.h>

#ifdef HAVE_LIBHISTORY
#  include <readline/history.h>
#endif

#ifdef MAKE_GUILE
#  include <mixguile/mixguile.h>
#endif

#include <gdk/gdkkeysyms.h>
#include <mixlib/mix_vm_command.h>
#include "mixgtk_mixvm.h"
#include "mixgtk_mixal.h"
#include "mixgtk_fontsel.h"
#include "mixgtk_config.h"
#include "mixgtk_external.h"
#include "mixgtk_cmd_dispatcher.h"


/* a mix vm command dispatcher */
typedef struct mixgtk_dispatch_
{
  mix_vm_cmd_dispatcher_t *dispatcher; /* the underlying cmd dispatcher */
  FILE *out;			/* the dispatcher's output file */
  int fildes[2];		/* pipe for communication with the dispatcher */
  GtkWidget *prompt;		/* the command prompt widget */
  GtkWidget *log;		/* the dispatcher's messages echo area */
  GtkWidget *status;		/* the status bar widget */
  guint context;		/* context of the status bar messages */
  gchar *last_file;
} mixgtk_dispatch_data_t;

static struct mixgtk_dispatch_ dis_data_ = {NULL};

static const gchar *TITLE_FORMAT_ = "gmixvm - %s";

static void
log_command_ (mixgtk_dispatch_data_t *dis, const gchar *cmd)
{
  GtkTextBuffer *buf = gtk_text_view_get_buffer (GTK_TEXT_VIEW (dis->log));
  GtkTextIter end;

  gtk_text_buffer_get_end_iter (buf, &end);
  gtk_text_buffer_place_cursor (buf, &end);
  gtk_text_buffer_insert_at_cursor (buf, "MIX> ", -1);
  gtk_text_buffer_insert_at_cursor (buf, cmd, -1);
  gtk_text_buffer_insert_at_cursor (buf, "\n", -1);

#ifdef HAVE_LIBHISTORY
  add_history ((char *)cmd);
/*  history_search ((char *)cmd, 0); */
  history_set_pos (history_base + history_length - 1);
#endif
}

static void
flush_log_ (mixgtk_dispatch_data_t *dis)
{
  enum {BLKSIZE = 100};
  static gchar BUFFER[BLKSIZE];

  GtkTextBuffer *buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (dis->log));
  GtkTextMark *mark;
  GtkTextIter end;
  ssize_t k;

  gtk_text_buffer_get_end_iter (buffer, &end);
  gtk_text_buffer_place_cursor (buffer, &end);

  fflush (dis->out);
  while ((k = read (dis->fildes[0], BUFFER, BLKSIZE)) != 0)
    {
      if (k == -1 && errno != EINTR) break;
      if (k != -1)
	gtk_text_buffer_insert_at_cursor (buffer, BUFFER, k);
    }

  mark = gtk_text_buffer_get_insert (buffer);
  gtk_text_view_scroll_to_mark (GTK_TEXT_VIEW (dis->log), mark, 0,
                                TRUE, 0, 0);
}

/* hooks */
static void
global_post_hook_ (mix_vm_cmd_dispatcher_t *dis,
		   mix_vm_command_t cmd, const gchar *arg, gpointer data)
{
  flush_log_ ((mixgtk_dispatch_data_t *)data);
  mixgtk_mixvm_update_vm_widgets ();
}

static void
load_post_hook_ (mix_vm_cmd_dispatcher_t *dis, const gchar *arg,
		 gpointer data)
{
  static glong id = -1;

  if (mix_vm_cmd_dispatcher_get_last_result (dis))
    {
      GtkWindow *mainw =
	GTK_WINDOW (mixgtk_widget_factory_get_dialog (MIXGTK_MAIN));

      if (dis_data_.last_file) g_free (dis_data_.last_file);
      dis_data_.last_file = g_strdup_printf (TITLE_FORMAT_, arg);
      gtk_window_set_title (mainw, dis_data_.last_file);

      mixgtk_mixal_load_file ();
      mixgtk_mixal_update ();
      mixgtk_mixal_update_bp_all ();

      if (id != -1)
	gtk_statusbar_remove (GTK_STATUSBAR (dis_data_.status),
			      dis_data_.context, (guint)id);
      id =
	gtk_statusbar_push (GTK_STATUSBAR (dis_data_.status), dis_data_.context,
			    dis_data_.last_file);
    }
}

static void
run_post_hook_ (mix_vm_cmd_dispatcher_t *dis, const gchar *arg,
		 gpointer data)
{
  mixgtk_mixal_update ();
}

static void
next_post_hook_ (mix_vm_cmd_dispatcher_t *dis, const gchar *arg,
		 gpointer data)
{
  mixgtk_mixal_update ();
}

static void
linebp_post_hook_ (mix_vm_cmd_dispatcher_t *dis, const gchar *arg,
		gpointer data)
{
  if (arg && strlen (arg)) mixgtk_mixal_update_bp_at_line (atoi (arg));
}

static void
addrbp_post_hook_ (mix_vm_cmd_dispatcher_t *dis, const gchar *arg,
		gpointer data)
{
  if (arg && strlen (arg)) mixgtk_mixal_update_bp_at_address (atoi (arg));
}

static void
allbp_post_hook_ (mix_vm_cmd_dispatcher_t *dis, const gchar *arg,
		  gpointer data)
{
  mixgtk_mixal_update_bp_all ();
}


static void
install_hooks_ (void)
{
  mix_vm_cmd_dispatcher_global_post_hook (dis_data_.dispatcher,
					  global_post_hook_,
					  (gpointer)(&dis_data_));
  mix_vm_cmd_dispatcher_post_hook (dis_data_.dispatcher,
				   MIX_CMD_LOAD, load_post_hook_,
				   NULL);
  mix_vm_cmd_dispatcher_post_hook (dis_data_.dispatcher,
				   MIX_CMD_RUN, run_post_hook_,
				   NULL);
  mix_vm_cmd_dispatcher_post_hook (dis_data_.dispatcher,
				   MIX_CMD_NEXT, next_post_hook_,
				   NULL);
  mix_vm_cmd_dispatcher_post_hook (dis_data_.dispatcher,
				   MIX_CMD_SBP, linebp_post_hook_,
				   NULL);
  mix_vm_cmd_dispatcher_post_hook (dis_data_.dispatcher,
				   MIX_CMD_CBP, linebp_post_hook_,
				   NULL);
  mix_vm_cmd_dispatcher_post_hook (dis_data_.dispatcher,
				   MIX_CMD_SBPA, addrbp_post_hook_,
				   NULL);
  mix_vm_cmd_dispatcher_post_hook (dis_data_.dispatcher,
				   MIX_CMD_CBPA, addrbp_post_hook_,
				   NULL);
  mix_vm_cmd_dispatcher_post_hook (dis_data_.dispatcher,
				   MIX_CMD_CABP, allbp_post_hook_,
				   NULL);
}


/* initialise the command dispatcher */
gboolean
mixgtk_cmd_dispatcher_init (mixgtk_dialog_id_t top)
{
  static gboolean restart = FALSE;
  gchar *text = NULL;

  dis_data_.prompt =
    mixgtk_widget_factory_get (top, MIXGTK_WIDGET_PROMPT);
  g_return_val_if_fail (dis_data_.prompt != NULL, FALSE);

  if (dis_data_.log)
    text = gtk_editable_get_chars (GTK_EDITABLE (dis_data_.log), 0, -1);

  dis_data_.log =
    mixgtk_widget_factory_get (top, MIXGTK_WIDGET_LOG);

  g_return_val_if_fail (dis_data_.log != NULL, FALSE);

  if (text)
    {
      gtk_text_buffer_insert_at_cursor
        (gtk_text_view_get_buffer (GTK_TEXT_VIEW (dis_data_.log)), text, -1);
      g_free (text);
    }

  if (!dis_data_.dispatcher)
    {
      static const gchar *HISTORY_FILE = "gmixvm.history";
      static gint HISTORY_SIZE = 100;
      mix_config_t *config = mixgtk_config_get_mix_config ();

      int r = pipe (dis_data_.fildes);
      g_return_val_if_fail (r == 0, FALSE);
      /* connect stdout/stderr to the pipe's write end */
      if (dup2 (dis_data_.fildes[1], STDOUT_FILENO) == -1
	  || dup2 (dis_data_.fildes[1], STDOUT_FILENO) == -1)
	return FALSE;
      dis_data_.out = fdopen (dis_data_.fildes[1], "w");
      g_return_val_if_fail (dis_data_.out != NULL, FALSE);
      r = fcntl (dis_data_.fildes[0], F_GETFL, 0);
      g_return_val_if_fail (r != -1, FALSE);
      r |= O_NONBLOCK;
      r = fcntl(dis_data_.fildes[0], F_SETFL, r);
      g_return_val_if_fail (r != -1, FALSE);

      if (!mix_config_get_history_file (config))
	mix_config_set_history_file (config, HISTORY_FILE);
      if (mix_config_get_history_size (config) == 0)
	mix_config_set_history_size (config, HISTORY_SIZE);

      dis_data_.dispatcher =
	mix_vm_cmd_dispatcher_new_with_config (dis_data_.out,
					       dis_data_.out,
					       config);
      mix_vm_cmd_dispatcher_print_time (dis_data_.dispatcher, FALSE);

      install_hooks_ ();
    }

  dis_data_.status =
    mixgtk_widget_factory_get (MIXGTK_MAIN, MIXGTK_WIDGET_STATUSBAR);
  g_return_val_if_fail (dis_data_.status != NULL, FALSE);
  dis_data_.context = gtk_statusbar_get_context_id (GTK_STATUSBAR
						    (dis_data_.status),
						    "cmd_dis_context");

  if (!restart) mixgtk_external_init (dis_data_.dispatcher);

  if (dis_data_.last_file)
    gtk_window_set_title
      (GTK_WINDOW (mixgtk_widget_factory_get_dialog (MIXGTK_MAIN)),
       dis_data_.last_file);

  mixgtk_fontsel_set_font (MIX_FONT_LOG, dis_data_.log);
  mixgtk_fontsel_set_font (MIX_FONT_PROMPT, dis_data_.prompt);

  restart = TRUE;
  return TRUE;
}

/* dispatch an externally provided command */
#ifdef MAKE_GUILE
static gboolean
try_guile_ (const gchar *command)
{
  if (command && command[0] == '(' && command[strlen (command) - 1] == ')')
    {
      mixguile_interpret_command (command);
      return TRUE;
    }
  return FALSE;
}
#else
#  define try_guile_(ignored)  FALSE
#endif

void
mixgtk_cmd_dispatcher_dispatch (const gchar *command)
{
  GtkWidget *entry = dis_data_.prompt;
  g_return_if_fail (command != NULL);
  g_assert (entry != NULL);
  gtk_entry_set_text (GTK_ENTRY (entry), command);
  log_command_ (&dis_data_, command);
  if (!try_guile_ (command))
    mix_vm_cmd_dispatcher_dispatch_text (dis_data_.dispatcher, command);
  gtk_entry_set_text (GTK_ENTRY (entry), "");
}

/* get times */
void
mixgtk_cmd_dispatcher_get_times (gint *uptime, gint *progtime, gint *laptime)
{
  if (uptime != NULL)
    *uptime = mix_vm_cmd_dispatcher_get_uptime (dis_data_.dispatcher);
  if (progtime != NULL)
    *progtime = mix_vm_cmd_dispatcher_get_progtime (dis_data_.dispatcher);
  if (laptime != NULL)
    *laptime = mix_vm_cmd_dispatcher_get_laptime (dis_data_.dispatcher);
}

/* get the underlying vm */
mix_vm_t *
mixgtk_cmd_dispatcher_get_vm (void)
{
  return (mix_vm_t *) mix_vm_cmd_dispatcher_get_vm (dis_data_.dispatcher);
}

/* get the current source file */
const gchar *
mixgtk_cmd_dispatcher_get_src_path (void)
{
  return mix_vm_cmd_dispatcher_get_src_file_path (dis_data_.dispatcher);
}

/* get the mix cmd dispatcher */
mix_vm_cmd_dispatcher_t *
mixgtk_cmd_dispatcher_get_mix_dispatcher (void)
{
  return dis_data_.dispatcher;
}

/* process commands */
void
complete_command_ (void)
{
  GtkEntry *entry = GTK_ENTRY (dis_data_.prompt);
  gchar *prefix = NULL;
  const gchar *text = gtk_entry_get_text (entry);
  const GList  *cmds =
    mix_vm_cmd_dispatcher_complete (dis_data_.dispatcher, text, &prefix);

  if (prefix != NULL)
    {
      GtkTextBuffer *buf =
        gtk_text_view_get_buffer (GTK_TEXT_VIEW (dis_data_.log));

      gtk_entry_set_text (entry, prefix);
      if (g_list_length ((GList *)cmds) > 1)
	{
          static gchar BUFFER[25];
	  gint k = 0;
	  gtk_text_buffer_insert_at_cursor (buf, "Completions:\n", -1);
	  while (cmds)
	    {
	      g_snprintf (BUFFER, 25, "%-12s", (const char*)cmds->data);
	      ++k;
	      gtk_text_buffer_insert_at_cursor (buf, BUFFER, -1);
	      if (k%5 == 0)
		gtk_text_buffer_insert_at_cursor (buf, "\n", -1);

	      cmds = cmds->next;
	    }
	  if (k%5 != 0)
	    gtk_text_buffer_insert_at_cursor (buf, "\n", -1);
	}
      else
        {
          gint pos = strlen (prefix);
          gtk_editable_insert_text (GTK_EDITABLE (entry), " ", 1, &pos);
        }
      flush_log_ (&dis_data_);
      g_free (prefix);
    }
}

int
on_command_prompt_key_press_event (GtkEntry *w, GdkEventKey *e, gpointer d)
{
  guint key = e->keyval;
  gboolean result = FALSE;

#ifdef HAVE_LIBHISTORY
  HIST_ENTRY *entry = NULL;
  if (key == GDK_Up)
    {
      entry = previous_history ();
      if (entry && entry->line)
	gtk_entry_set_text (w, entry->line);
      result = TRUE;
    }
  if (key == GDK_Down)
    {
      entry = next_history ();
      if (entry && entry->line)
	gtk_entry_set_text (w, entry->line);
      result = TRUE;
    }
#endif

  if (key == GDK_Tab)
    {
      complete_command_ ();
      result = TRUE;
    }

  if (result) gtk_editable_set_position (GTK_EDITABLE (w), -1);

  return result;
}

void
on_command_prompt_activate (GtkEntry *prompt, gpointer data)
{
  gchar *text =
    g_strstrip (gtk_editable_get_chars (GTK_EDITABLE (prompt), 0, -1));
  if (text && *text)
    {
      log_command_ (&dis_data_, text);
      if (!try_guile_ (text))
        mix_vm_cmd_dispatcher_dispatch_text (dis_data_.dispatcher, text);
      gtk_entry_set_text (prompt, "");
    }
  g_free (text);
}

void
on_log_font_activate ()
{
  GtkWidget *w[] = { dis_data_.log };
  mixgtk_fontsel_query_font (MIX_FONT_LOG, w, 1);
}

void
on_prompt_font_activate ()
{
  GtkWidget *w[] = { dis_data_.prompt };
  mixgtk_fontsel_query_font (MIX_FONT_PROMPT, w, 1);
}

void
mixgtk_cmd_dispatcher_update_fonts (void)
{
  mixgtk_fontsel_set_font (MIX_FONT_LOG, dis_data_.log);
  mixgtk_fontsel_set_font (MIX_FONT_PROMPT, dis_data_.prompt);
}