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
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
|
/*
* tkConsole.c --
*
* This file implements a Tcl console for systems that may not
* otherwise have access to a console. It uses the Text widget
* and provides special access via a console command.
*
* Copyright (c) 1995-1996 Sun Microsystems, Inc.
*
* See the file "license.terms" for information on usage and redistribution
* of this file, and for a DISCLAIMER OF ALL WARRANTIES.
*
* RCS: @(#) $Id: tkConsole.c,v 1.3.4.2 1999/03/07 00:15:43 redman Exp $
*/
#include "tk.h"
#include "tkInt.h"
#include <string.h>
/*
* A data structure of the following type holds information for each console
* which a handler (i.e. a Tcl command) has been defined for a particular
* top-level window.
*/
typedef struct ConsoleInfo {
Tcl_Interp *consoleInterp; /* Interpreter for the console. */
Tcl_Interp *interp; /* Interpreter to send console commands. */
} ConsoleInfo;
static Tcl_Interp *gStdoutInterp = NULL;
/*
* Forward declarations for procedures defined later in this file:
*
* The first three will be used in the tk app shells...
*/
void TkConsoleCreate _ANSI_ARGS_((void));
void TkConsoleCreate_ _ANSI_ARGS_((void));
int TkConsoleInit _ANSI_ARGS_((Tcl_Interp *interp));
void TkConsolePrint _ANSI_ARGS_((Tcl_Interp *interp,
int devId, char *buffer, long size));
static int ConsoleCmd _ANSI_ARGS_((ClientData clientData,
Tcl_Interp *interp, int argc, char **argv));
static void ConsoleDeleteProc _ANSI_ARGS_((ClientData clientData));
static void ConsoleEventProc _ANSI_ARGS_((ClientData clientData,
XEvent *eventPtr));
static int InterpreterCmd _ANSI_ARGS_((ClientData clientData,
Tcl_Interp *interp, int argc, char **argv));
static int ConsoleInput _ANSI_ARGS_((ClientData instanceData,
char *buf, int toRead, int *errorCode));
static int ConsoleOutput _ANSI_ARGS_((ClientData instanceData,
char *buf, int toWrite, int *errorCode));
static int ConsoleClose _ANSI_ARGS_((ClientData instanceData,
Tcl_Interp *interp));
static void ConsoleWatch _ANSI_ARGS_((ClientData instanceData,
int mask));
static int ConsoleHandle _ANSI_ARGS_((ClientData instanceData,
int direction, ClientData *handlePtr));
/*
* This structure describes the channel type structure for file based IO:
*/
static Tcl_ChannelType consoleChannelType = {
"console", /* Type name. */
NULL, /* Always non-blocking.*/
ConsoleClose, /* Close proc. */
ConsoleInput, /* Input proc. */
ConsoleOutput, /* Output proc. */
NULL, /* Seek proc. */
NULL, /* Set option proc. */
NULL, /* Get option proc. */
ConsoleWatch, /* Watch for events on console. */
ConsoleHandle, /* Get a handle from the device. */
};
/*
*----------------------------------------------------------------------
*
* TkConsoleCreate, TkConsoleCreate_ --
*
* Create the console channels and install them as the standard
* channels. All I/O will be discarded until TkConsoleInit is
* called to attach the console to a text widget.
*
* Results:
* None.
*
* Side effects:
* Creates the console channel and installs it as the standard
* channels.
*
*----------------------------------------------------------------------
*/
void
TkConsoleCreate()
{
/*
* This function is being disabled so we don't end up calling it
* twice. Once from WinMain() and once from Tk_Main(). The real
* function is now TkConsoleCreate_ and is only called from Tk_Main.
* All of is an ugly hack.
*/
}
void
TkConsoleCreate_()
{
Tcl_Channel consoleChannel;
consoleChannel = Tcl_CreateChannel(&consoleChannelType, "console0",
(ClientData) TCL_STDIN, TCL_READABLE);
if (consoleChannel != NULL) {
Tcl_SetChannelOption(NULL, consoleChannel, "-translation", "lf");
Tcl_SetChannelOption(NULL, consoleChannel, "-buffering", "none");
}
Tcl_SetStdChannel(consoleChannel, TCL_STDIN);
consoleChannel = Tcl_CreateChannel(&consoleChannelType, "console1",
(ClientData) TCL_STDOUT, TCL_WRITABLE);
if (consoleChannel != NULL) {
Tcl_SetChannelOption(NULL, consoleChannel, "-translation", "lf");
Tcl_SetChannelOption(NULL, consoleChannel, "-buffering", "none");
}
Tcl_SetStdChannel(consoleChannel, TCL_STDOUT);
consoleChannel = Tcl_CreateChannel(&consoleChannelType, "console2",
(ClientData) TCL_STDERR, TCL_WRITABLE);
if (consoleChannel != NULL) {
Tcl_SetChannelOption(NULL, consoleChannel, "-translation", "lf");
Tcl_SetChannelOption(NULL, consoleChannel, "-buffering", "none");
}
Tcl_SetStdChannel(consoleChannel, TCL_STDERR);
}
/*
*----------------------------------------------------------------------
*
* TkConsoleInit --
*
* Initialize the console. This code actually creates a new
* application and associated interpreter. This effectivly hides
* the implementation from the main application.
*
* Results:
* None.
*
* Side effects:
* A new console it created.
*
*----------------------------------------------------------------------
*/
int
TkConsoleInit(interp)
Tcl_Interp *interp; /* Interpreter to use for prompting. */
{
Tcl_Interp *consoleInterp;
ConsoleInfo *info;
Tk_Window mainWindow = Tk_MainWindow(interp);
#ifdef MAC_TCL
static char initCmd[] = "source -rsrc {Console}";
#else
static char initCmd[] = "source $tk_library/console.tcl";
#endif
consoleInterp = Tcl_CreateInterp();
if (consoleInterp == NULL) {
goto error;
}
/*
* Initialized Tcl and Tk.
*/
if (Tcl_Init(consoleInterp) != TCL_OK) {
goto error;
}
if (Tk_Init(consoleInterp) != TCL_OK) {
goto error;
}
gStdoutInterp = interp;
/*
* Add console commands to the interp
*/
info = (ConsoleInfo *) ckalloc(sizeof(ConsoleInfo));
info->interp = interp;
info->consoleInterp = consoleInterp;
Tcl_CreateCommand(interp, "console", ConsoleCmd, (ClientData) info,
(Tcl_CmdDeleteProc *) ConsoleDeleteProc);
Tcl_CreateCommand(consoleInterp, "consoleinterp", InterpreterCmd,
(ClientData) info, (Tcl_CmdDeleteProc *) NULL);
Tk_CreateEventHandler(mainWindow, StructureNotifyMask, ConsoleEventProc,
(ClientData) info);
Tcl_Preserve((ClientData) consoleInterp);
if (Tcl_Eval(consoleInterp, initCmd) == TCL_ERROR) {
/* goto error; -- no problem for now... */
printf("Eval error: %s", consoleInterp->result);
}
Tcl_Release((ClientData) consoleInterp);
return TCL_OK;
error:
if (consoleInterp != NULL) {
Tcl_DeleteInterp(consoleInterp);
}
return TCL_ERROR;
}
/*
*----------------------------------------------------------------------
*
* ConsoleOutput--
*
* Writes the given output on the IO channel. Returns count of how
* many characters were actually written, and an error indication.
*
* Results:
* A count of how many characters were written is returned and an
* error indication is returned in an output argument.
*
* Side effects:
* Writes output on the actual channel.
*
*----------------------------------------------------------------------
*/
static int
ConsoleOutput(instanceData, buf, toWrite, errorCode)
ClientData instanceData; /* Indicates which device to use. */
char *buf; /* The data buffer. */
int toWrite; /* How many bytes to write? */
int *errorCode; /* Where to store error code. */
{
*errorCode = 0;
Tcl_SetErrno(0);
if (gStdoutInterp != NULL) {
TkConsolePrint(gStdoutInterp, (int) instanceData, buf, toWrite);
}
return toWrite;
}
/*
*----------------------------------------------------------------------
*
* ConsoleInput --
*
* Read input from the console. Not currently implemented.
*
* Results:
* Always returns EOF.
*
* Side effects:
* None.
*
*----------------------------------------------------------------------
*/
/* ARGSUSED */
static int
ConsoleInput(instanceData, buf, bufSize, errorCode)
ClientData instanceData; /* Unused. */
char *buf; /* Where to store data read. */
int bufSize; /* How much space is available
* in the buffer? */
int *errorCode; /* Where to store error code. */
{
return 0; /* Always return EOF. */
}
/*
*----------------------------------------------------------------------
*
* ConsoleClose --
*
* Closes the IO channel.
*
* Results:
* Always returns 0 (success).
*
* Side effects:
* Frees the dummy file associated with the channel.
*
*----------------------------------------------------------------------
*/
/* ARGSUSED */
static int
ConsoleClose(instanceData, interp)
ClientData instanceData; /* Unused. */
Tcl_Interp *interp; /* Unused. */
{
return 0;
}
/*
*----------------------------------------------------------------------
*
* ConsoleWatch --
*
* Called by the notifier to set up the console device so that
* events will be noticed. Since there are no events on the
* console, this routine just returns without doing anything.
*
* Results:
* None.
*
* Side effects:
* None.
*
*----------------------------------------------------------------------
*/
/* ARGSUSED */
static void
ConsoleWatch(instanceData, mask)
ClientData instanceData; /* Device ID for the channel. */
int mask; /* OR-ed combination of
* TCL_READABLE, TCL_WRITABLE and
* TCL_EXCEPTION, for the events
* we are interested in. */
{
}
/*
*----------------------------------------------------------------------
*
* ConsoleHandle --
*
* Invoked by the generic IO layer to get a handle from a channel.
* Because console channels are not devices, this function always
* fails.
*
* Results:
* Always returns TCL_ERROR.
*
* Side effects:
* None.
*
*----------------------------------------------------------------------
*/
/* ARGSUSED */
static int
ConsoleHandle(instanceData, direction, handlePtr)
ClientData instanceData; /* Device ID for the channel. */
int direction; /* TCL_READABLE or TCL_WRITABLE to indicate
* which direction of the channel is being
* requested. */
ClientData *handlePtr; /* Where to store handle */
{
return TCL_ERROR;
}
/*
*----------------------------------------------------------------------
*
* ConsoleCmd --
*
* The console command implements a Tcl interface to the various console
* options.
*
* Results:
* None.
*
* Side effects:
* None.
*
*----------------------------------------------------------------------
*/
static int
ConsoleCmd(clientData, interp, argc, argv)
ClientData clientData; /* Not used. */
Tcl_Interp *interp; /* Current interpreter. */
int argc; /* Number of arguments. */
char **argv; /* Argument strings. */
{
ConsoleInfo *info = (ConsoleInfo *) clientData;
char c;
int length;
int result;
Tcl_Interp *consoleInterp;
if (argc < 2) {
Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
" option ?arg arg ...?\"", (char *) NULL);
return TCL_ERROR;
}
c = argv[1][0];
length = strlen(argv[1]);
result = TCL_OK;
consoleInterp = info->consoleInterp;
Tcl_Preserve((ClientData) consoleInterp);
if ((c == 't') && (strncmp(argv[1], "title", length)) == 0) {
Tcl_DString dString;
Tcl_DStringInit(&dString);
Tcl_DStringAppend(&dString, "wm title . ", -1);
if (argc == 3) {
Tcl_DStringAppendElement(&dString, argv[2]);
}
Tcl_Eval(consoleInterp, Tcl_DStringValue(&dString));
Tcl_DStringFree(&dString);
} else if ((c == 'h') && (strncmp(argv[1], "hide", length)) == 0) {
Tcl_Eval(consoleInterp, "wm withdraw .");
} else if ((c == 's') && (strncmp(argv[1], "show", length)) == 0) {
Tcl_Eval(consoleInterp, "wm deiconify .");
} else if ((c == 'e') && (strncmp(argv[1], "eval", length)) == 0) {
if (argc == 3) {
result = Tcl_Eval(consoleInterp, argv[2]);
Tcl_AppendResult(interp, Tcl_GetStringResult(consoleInterp),
(char *) NULL);
} else {
Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
" eval command\"", (char *) NULL);
return TCL_ERROR;
}
} else {
Tcl_AppendResult(interp, "bad option \"", argv[1],
"\": should be hide, show, or title",
(char *) NULL);
result = TCL_ERROR;
}
Tcl_Release((ClientData) consoleInterp);
return result;
}
/*
*----------------------------------------------------------------------
*
* InterpreterCmd --
*
* This command allows the console interp to communicate with the
* main interpreter.
*
* Results:
* None.
*
* Side effects:
* None.
*
*----------------------------------------------------------------------
*/
static int
InterpreterCmd(clientData, interp, argc, argv)
ClientData clientData; /* Not used. */
Tcl_Interp *interp; /* Current interpreter. */
int argc; /* Number of arguments. */
char **argv; /* Argument strings. */
{
ConsoleInfo *info = (ConsoleInfo *) clientData;
char c;
int length;
int result;
Tcl_Interp *otherInterp;
if (argc < 2) {
Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
" option ?arg arg ...?\"", (char *) NULL);
return TCL_ERROR;
}
c = argv[1][0];
length = strlen(argv[1]);
otherInterp = info->interp;
Tcl_Preserve((ClientData) otherInterp);
if ((c == 'e') && (strncmp(argv[1], "eval", length)) == 0) {
result = Tcl_GlobalEval(otherInterp, argv[2]);
Tcl_AppendResult(interp, otherInterp->result, (char *) NULL);
} else if ((c == 'r') && (strncmp(argv[1], "record", length)) == 0) {
Tcl_RecordAndEval(otherInterp, argv[2], TCL_EVAL_GLOBAL);
result = TCL_OK;
Tcl_ResetResult(interp);
Tcl_AppendResult(interp, otherInterp->result, (char *) NULL);
} else {
Tcl_AppendResult(interp, "bad option \"", argv[1],
"\": should be eval or record",
(char *) NULL);
result = TCL_ERROR;
}
Tcl_Release((ClientData) otherInterp);
return result;
}
/*
*----------------------------------------------------------------------
*
* ConsoleDeleteProc --
*
* If the console command is deleted we destroy the console window
* and all associated data structures.
*
* Results:
* None.
*
* Side effects:
* A new console it created.
*
*----------------------------------------------------------------------
*/
void
ConsoleDeleteProc(clientData)
ClientData clientData;
{
ConsoleInfo *info = (ConsoleInfo *) clientData;
Tcl_DeleteInterp(info->consoleInterp);
info->consoleInterp = NULL;
}
/*
*----------------------------------------------------------------------
*
* ConsoleEventProc --
*
* This event procedure is registered on the main window of the
* slave interpreter. If the user or a running script causes the
* main window to be destroyed, then we need to inform the console
* interpreter by invoking "tkConsoleExit".
*
* Results:
* None.
*
* Side effects:
* Invokes the "tkConsoleExit" procedure in the console interp.
*
*----------------------------------------------------------------------
*/
static void
ConsoleEventProc(clientData, eventPtr)
ClientData clientData;
XEvent *eventPtr;
{
ConsoleInfo *info = (ConsoleInfo *) clientData;
Tcl_Interp *consoleInterp;
if (eventPtr->type == DestroyNotify) {
consoleInterp = info->consoleInterp;
/*
* It is possible that the console interpreter itself has
* already been deleted. In that case the consoleInterp
* field will be set to NULL. If the interpreter is already
* gone, we do not have to do any work here.
*/
if (consoleInterp == (Tcl_Interp *) NULL) {
return;
}
Tcl_Preserve((ClientData) consoleInterp);
Tcl_Eval(consoleInterp, "tkConsoleExit");
Tcl_Release((ClientData) consoleInterp);
}
}
/*
*----------------------------------------------------------------------
*
* TkConsolePrint --
*
* Prints to the give text to the console. Given the main interp
* this functions find the appropiate console interp and forwards
* the text to be added to that console.
*
* Results:
* None.
*
* Side effects:
* None.
*
*----------------------------------------------------------------------
*/
void
TkConsolePrint(interp, devId, buffer, size)
Tcl_Interp *interp; /* Main interpreter. */
int devId; /* TCL_STDOUT for stdout, TCL_STDERR for
* stderr. */
char *buffer; /* Text buffer. */
long size; /* Size of text buffer. */
{
Tcl_DString command, output;
Tcl_CmdInfo cmdInfo;
char *cmd;
ConsoleInfo *info;
Tcl_Interp *consoleInterp;
int result;
if (interp == NULL) {
return;
}
if (devId == TCL_STDERR) {
cmd = "tkConsoleOutput stderr ";
} else {
cmd = "tkConsoleOutput stdout ";
}
result = Tcl_GetCommandInfo(interp, "console", &cmdInfo);
if (result == 0) {
return;
}
info = (ConsoleInfo *) cmdInfo.clientData;
Tcl_DStringInit(&output);
Tcl_DStringAppend(&output, buffer, size);
Tcl_DStringInit(&command);
Tcl_DStringAppend(&command, cmd, strlen(cmd));
Tcl_DStringAppendElement(&command, output.string);
consoleInterp = info->consoleInterp;
Tcl_Preserve((ClientData) consoleInterp);
Tcl_Eval(consoleInterp, command.string);
Tcl_Release((ClientData) consoleInterp);
Tcl_DStringFree(&command);
Tcl_DStringFree(&output);
}
|