1 |
/* $Header$ */
|
2 |
|
3 |
/*
|
4 |
* tkMain.c --
|
5 |
*
|
6 |
* This file contains a generic main program for Tk-based applications.
|
7 |
* It can be used as-is for many applications, just by supplying a
|
8 |
* different appInitProc procedure for each specific application.
|
9 |
* Or, it can be used as a template for creating new main programs
|
10 |
* for Tk applications.
|
11 |
*
|
12 |
* Copyright (c) 1990-1994 The Regents of the University of California.
|
13 |
* Copyright (c) 1994-1997 Sun Microsystems, Inc.
|
14 |
*
|
15 |
* See the file "license.terms" for information on usage and redistribution
|
16 |
* of this file, and for a DISCLAIMER OF ALL WARRANTIES.
|
17 |
*
|
18 |
* RCS: @(#) $Id: tkmain.c,v 1.1.1.1 2001/06/13 05:05:07 dtashley Exp $
|
19 |
*/
|
20 |
|
21 |
#define MODULE_TK_MAIN
|
22 |
|
23 |
#include <ctype.h>
|
24 |
#include <stdio.h>
|
25 |
#include <string.h>
|
26 |
#include <tcl.h>
|
27 |
#include <tclInt.h>
|
28 |
|
29 |
#include "appinit.h"
|
30 |
#include "build_config.h"
|
31 |
#include "extninit.h"
|
32 |
#include "msgstrs.h"
|
33 |
|
34 |
#include "tk.h"
|
35 |
#include "tkInt.h"
|
36 |
#ifdef NO_STDLIB_H
|
37 |
# include "../compat/stdlib.h"
|
38 |
#else
|
39 |
# include <stdlib.h>
|
40 |
#endif
|
41 |
#ifdef __WIN32__
|
42 |
#include "tkWinInt.h"
|
43 |
#endif
|
44 |
|
45 |
|
46 |
typedef struct ThreadSpecificData {
|
47 |
Tcl_Interp *interp; /* Interpreter for this thread. */
|
48 |
Tcl_DString command; /* Used to assemble lines of terminal input
|
49 |
* into Tcl commands. */
|
50 |
Tcl_DString line; /* Used to read the next line from the
|
51 |
* terminal input. */
|
52 |
int tty; /* Non-zero means standard input is a
|
53 |
* terminal-like device. Zero means it's
|
54 |
* a file. */
|
55 |
} ThreadSpecificData;
|
56 |
Tcl_ThreadDataKey dataKey;
|
57 |
|
58 |
/*
|
59 |
* Declarations for various library procedures and variables (don't want
|
60 |
* to include tkInt.h or tkPort.h here, because people might copy this
|
61 |
* file out of the Tk source directory to make their own modified versions).
|
62 |
* Note: don't declare "exit" here even though a declaration is really
|
63 |
* needed, because it will conflict with a declaration elsewhere on
|
64 |
* some systems.
|
65 |
*/
|
66 |
|
67 |
#if !defined(__WIN32__) && !defined(_WIN32)
|
68 |
extern int isatty _ANSI_ARGS_((int fd));
|
69 |
extern char * strrchr _ANSI_ARGS_((CONST char *string, int c));
|
70 |
#endif
|
71 |
extern void TkpDisplayWarning _ANSI_ARGS_((char *msg,
|
72 |
char *title));
|
73 |
|
74 |
/*
|
75 |
* Forward declarations for procedures defined later in this file.
|
76 |
*/
|
77 |
|
78 |
static void Prompt _ANSI_ARGS_((Tcl_Interp *interp, int partial));
|
79 |
static void StdinProc _ANSI_ARGS_((ClientData clientData,
|
80 |
int mask));
|
81 |
|
82 |
/*
|
83 |
*----------------------------------------------------------------------
|
84 |
*
|
85 |
* Tk_MainEx --
|
86 |
*
|
87 |
* Main program for Wish and most other Tk-based applications.
|
88 |
*
|
89 |
* Results:
|
90 |
* None. This procedure never returns (it exits the process when
|
91 |
* it's done.
|
92 |
*
|
93 |
* Side effects:
|
94 |
* This procedure initializes the Tk world and then starts
|
95 |
* interpreting commands; almost anything could happen, depending
|
96 |
* on the script being interpreted.
|
97 |
*
|
98 |
*----------------------------------------------------------------------
|
99 |
*/
|
100 |
void
|
101 |
Tk_MainEx(argc, argv, appInitProc, interp)
|
102 |
int argc; /* Number of arguments. */
|
103 |
char **argv; /* Array of argument strings. */
|
104 |
Tcl_AppInitProc *appInitProc; /* Application-specific initialization
|
105 |
* procedure to call after most
|
106 |
* initialization but before starting
|
107 |
* to execute commands. This input
|
108 |
* parameter is ignored because of the
|
109 |
* integration of the code automatically
|
110 |
* generated by "mktclapp".
|
111 |
*/
|
112 |
Tcl_Interp *interp;
|
113 |
{
|
114 |
char *args, *fileName;
|
115 |
char buf[TCL_INTEGER_SPACE];
|
116 |
int code;
|
117 |
size_t length;
|
118 |
Tcl_Channel inChannel, outChannel;
|
119 |
Tcl_DString argString;
|
120 |
ThreadSpecificData *tsdPtr;
|
121 |
#ifdef __WIN32__
|
122 |
HANDLE handle;
|
123 |
#endif
|
124 |
#if 1
|
125 |
/* Dope the environment variables so that the first place the
|
126 |
** run-time code searches for the library files is in the "baked in"
|
127 |
** libraries. Over time, this should be changed to permanently
|
128 |
** bake things in so that this trick isn't necessary.
|
129 |
*/
|
130 |
putenv("TCL_LIBRARY=" ET_TCL_LIBRARY);
|
131 |
putenv("TK_LIBRARY=" ET_TK_LIBRARY);
|
132 |
|
133 |
/* Run the local initialization procedure for the ET module.
|
134 |
** This will dope the interpreter so that attempts to load the
|
135 |
** library files will get redirected internally.
|
136 |
*/
|
137 |
|
138 |
Et_DoInit(interp);
|
139 |
#endif
|
140 |
|
141 |
/* appInitProc = Et_DoInit; */
|
142 |
|
143 |
/*
|
144 |
* Ensure that we are getting the matching version of Tcl. This is
|
145 |
* really only an issue when Tk is loaded dynamically.
|
146 |
*/
|
147 |
|
148 |
if (Tcl_InitStubs(interp, TCL_VERSION, 1) == NULL) {
|
149 |
abort();
|
150 |
}
|
151 |
|
152 |
tsdPtr = (ThreadSpecificData *)
|
153 |
Tcl_GetThreadData(&dataKey, sizeof(ThreadSpecificData));
|
154 |
|
155 |
Tcl_FindExecutable(argv[0]);
|
156 |
tsdPtr->interp = interp;
|
157 |
|
158 |
#if (defined(__WIN32__) || defined(MAC_TCL))
|
159 |
Tk_InitConsoleChannels(interp);
|
160 |
#endif
|
161 |
|
162 |
#ifdef TCL_MEM_DEBUG
|
163 |
Tcl_InitMemory(interp);
|
164 |
#endif
|
165 |
|
166 |
/*
|
167 |
* Parse command-line arguments. A leading "-file" argument is
|
168 |
* ignored (a historical relic from the distant past). If the
|
169 |
* next argument doesn't start with a "-" then strip it off and
|
170 |
* use it as the name of a script file to process.
|
171 |
*/
|
172 |
|
173 |
fileName = TclGetStartupScriptFileName();
|
174 |
|
175 |
if (argc > 1) {
|
176 |
length = strlen(argv[1]);
|
177 |
if ((length >= 2) && (strncmp(argv[1], "-file", length) == 0)) {
|
178 |
argc--;
|
179 |
argv++;
|
180 |
}
|
181 |
}
|
182 |
if (fileName == NULL) {
|
183 |
if ((argc > 1) && (argv[1][0] != '-')) {
|
184 |
fileName = argv[1];
|
185 |
argc--;
|
186 |
argv++;
|
187 |
}
|
188 |
}
|
189 |
|
190 |
/*
|
191 |
* Make command-line arguments available in the Tcl variables "argc"
|
192 |
* and "argv".
|
193 |
*/
|
194 |
|
195 |
args = Tcl_Merge(argc-1, argv+1);
|
196 |
Tcl_ExternalToUtfDString(NULL, args, -1, &argString);
|
197 |
Tcl_SetVar(interp, "argv", Tcl_DStringValue(&argString), TCL_GLOBAL_ONLY);
|
198 |
Tcl_DStringFree(&argString);
|
199 |
ckfree(args);
|
200 |
sprintf(buf, "%d", argc-1);
|
201 |
|
202 |
if (fileName == NULL) {
|
203 |
Tcl_ExternalToUtfDString(NULL, argv[0], -1, &argString);
|
204 |
} else {
|
205 |
fileName = Tcl_ExternalToUtfDString(NULL, fileName, -1, &argString);
|
206 |
}
|
207 |
Tcl_SetVar(interp, "argc", buf, TCL_GLOBAL_ONLY);
|
208 |
Tcl_SetVar(interp, "argv0", Tcl_DStringValue(&argString), TCL_GLOBAL_ONLY);
|
209 |
|
210 |
/*
|
211 |
* Set the "tcl_interactive" variable.
|
212 |
*/
|
213 |
|
214 |
/*
|
215 |
* For now, under Windows, we assume we are not running as a console mode
|
216 |
* app, so we need to use the GUI console. In order to enable this, we
|
217 |
* always claim to be running on a tty. This probably isn't the right
|
218 |
* way to do it.
|
219 |
*/
|
220 |
|
221 |
#ifdef __WIN32__
|
222 |
handle = GetStdHandle(STD_INPUT_HANDLE);
|
223 |
|
224 |
if ((handle == INVALID_HANDLE_VALUE) || (handle == 0)
|
225 |
|| (GetFileType(handle) == FILE_TYPE_UNKNOWN)) {
|
226 |
/*
|
227 |
* If it's a bad or closed handle, then it's been connected
|
228 |
* to a wish console window.
|
229 |
*/
|
230 |
|
231 |
tsdPtr->tty = 1;
|
232 |
} else if (GetFileType(handle) == FILE_TYPE_CHAR) {
|
233 |
/*
|
234 |
* A character file handle is a tty by definition.
|
235 |
*/
|
236 |
|
237 |
tsdPtr->tty = 1;
|
238 |
} else {
|
239 |
tsdPtr->tty = 0;
|
240 |
}
|
241 |
|
242 |
#else
|
243 |
tsdPtr->tty = isatty(0);
|
244 |
#endif
|
245 |
Tcl_SetVar(interp, "tcl_interactive",
|
246 |
((fileName == NULL) && tsdPtr->tty) ? "1" : "0", TCL_GLOBAL_ONLY);
|
247 |
|
248 |
/*
|
249 |
* Invoke application-specific initialization.
|
250 |
*/
|
251 |
|
252 |
if ((*appInitProc)(interp) != TCL_OK) {
|
253 |
TkpDisplayWarning(Tcl_GetStringResult(interp),
|
254 |
"Application initialization failed");
|
255 |
}
|
256 |
|
257 |
/* Register any extensions that should be registered for the
|
258 |
** executable currently being built.
|
259 |
*/
|
260 |
ExtninitInit(interp);
|
261 |
|
262 |
/* Set a Tcl variable to indicate the particular product
|
263 |
** we are building. This is used in the startup message script
|
264 |
** to announce product version, and may be used other
|
265 |
** places, as well.
|
266 |
*/
|
267 |
Tcl_SetVar(interp,
|
268 |
BUILD_CONFIG_PRODUCT_NAME_VARIABLE,
|
269 |
BUILD_CONFIG_STATIC_WISH_ALIAS,
|
270 |
TCL_GLOBAL_ONLY);
|
271 |
|
272 |
/* Set Tcl variable to indicate the relese version of the
|
273 |
** product we are building. This is used in the startup message script
|
274 |
** to announce product version, and may be used other
|
275 |
** places, as well.
|
276 |
*/
|
277 |
Tcl_SetVar(interp,
|
278 |
BUILD_CONFIG_PRODUCT_VERSION_VARIABLE,
|
279 |
BUILD_CONFIG_RELEASE_VERSION,
|
280 |
TCL_GLOBAL_ONLY);
|
281 |
|
282 |
/* Change the title of the console window to reflect
|
283 |
** the product name and version.
|
284 |
*/
|
285 |
Tcl_GlobalEval(interp,
|
286 |
"wm title . \""
|
287 |
BUILD_CONFIG_STATIC_WISH_ALIAS
|
288 |
" v"
|
289 |
BUILD_CONFIG_RELEASE_VERSION
|
290 |
"\"");
|
291 |
|
292 |
/* Output the introductory message to the console.
|
293 |
** The script called is generic and applies to both
|
294 |
** IjuScripter and IjuConsole.
|
295 |
*/
|
296 |
Tcl_GlobalEval(interp, BUILD_CONFIG_StartupMessageScript);
|
297 |
|
298 |
/*
|
299 |
* Invoke the script specified on the command line, if any.
|
300 |
*/
|
301 |
|
302 |
if (fileName != NULL) {
|
303 |
Tcl_ResetResult(interp);
|
304 |
code = Tcl_EvalFile(interp, fileName);
|
305 |
if (code != TCL_OK) {
|
306 |
/*
|
307 |
* The following statement guarantees that the errorInfo
|
308 |
* variable is set properly.
|
309 |
*/
|
310 |
|
311 |
Tcl_AddErrorInfo(interp, "");
|
312 |
TkpDisplayWarning(Tcl_GetVar(interp, "errorInfo",
|
313 |
TCL_GLOBAL_ONLY), "Error in startup script");
|
314 |
Tcl_DeleteInterp(interp);
|
315 |
Tcl_Exit(1);
|
316 |
}
|
317 |
tsdPtr->tty = 0;
|
318 |
} else {
|
319 |
|
320 |
/*
|
321 |
* Evaluate the .rc file, if one has been specified.
|
322 |
*/
|
323 |
|
324 |
Tcl_SourceRCFile(interp);
|
325 |
|
326 |
/*
|
327 |
* Establish a channel handler for stdin.
|
328 |
*/
|
329 |
|
330 |
inChannel = Tcl_GetStdChannel(TCL_STDIN);
|
331 |
if (inChannel) {
|
332 |
Tcl_CreateChannelHandler(inChannel, TCL_READABLE, StdinProc,
|
333 |
(ClientData) inChannel);
|
334 |
}
|
335 |
if (tsdPtr->tty) {
|
336 |
Prompt(interp, 0);
|
337 |
}
|
338 |
}
|
339 |
Tcl_DStringFree(&argString);
|
340 |
|
341 |
outChannel = Tcl_GetStdChannel(TCL_STDOUT);
|
342 |
if (outChannel) {
|
343 |
Tcl_Flush(outChannel);
|
344 |
}
|
345 |
Tcl_DStringInit(&tsdPtr->command);
|
346 |
Tcl_DStringInit(&tsdPtr->line);
|
347 |
Tcl_ResetResult(interp);
|
348 |
|
349 |
/*
|
350 |
* Loop infinitely, waiting for commands to execute. When there
|
351 |
* are no windows left, Tk_MainLoop returns and we exit.
|
352 |
*/
|
353 |
|
354 |
Tk_MainLoop();
|
355 |
Tcl_DeleteInterp(interp);
|
356 |
Tcl_Exit(0);
|
357 |
}
|
358 |
|
359 |
/*
|
360 |
*----------------------------------------------------------------------
|
361 |
*
|
362 |
* StdinProc --
|
363 |
*
|
364 |
* This procedure is invoked by the event dispatcher whenever
|
365 |
* standard input becomes readable. It grabs the next line of
|
366 |
* input characters, adds them to a command being assembled, and
|
367 |
* executes the command if it's complete.
|
368 |
*
|
369 |
* Results:
|
370 |
* None.
|
371 |
*
|
372 |
* Side effects:
|
373 |
* Could be almost arbitrary, depending on the command that's
|
374 |
* typed.
|
375 |
*
|
376 |
*----------------------------------------------------------------------
|
377 |
*/
|
378 |
|
379 |
/* ARGSUSED */
|
380 |
static void
|
381 |
StdinProc(clientData, mask)
|
382 |
ClientData clientData; /* Not used. */
|
383 |
int mask; /* Not used. */
|
384 |
{
|
385 |
static int gotPartial = 0;
|
386 |
char *cmd;
|
387 |
int code, count;
|
388 |
Tcl_Channel chan = (Tcl_Channel) clientData;
|
389 |
ThreadSpecificData *tsdPtr = (ThreadSpecificData *)
|
390 |
Tcl_GetThreadData(&dataKey, sizeof(ThreadSpecificData));
|
391 |
Tcl_Interp *interp = tsdPtr->interp;
|
392 |
|
393 |
count = Tcl_Gets(chan, &tsdPtr->line);
|
394 |
|
395 |
if (count < 0) {
|
396 |
if (!gotPartial) {
|
397 |
if (tsdPtr->tty) {
|
398 |
Tcl_Exit(0);
|
399 |
} else {
|
400 |
Tcl_DeleteChannelHandler(chan, StdinProc, (ClientData) chan);
|
401 |
}
|
402 |
return;
|
403 |
}
|
404 |
}
|
405 |
|
406 |
(void) Tcl_DStringAppend(&tsdPtr->command, Tcl_DStringValue(
|
407 |
&tsdPtr->line), -1);
|
408 |
cmd = Tcl_DStringAppend(&tsdPtr->command, "\n", -1);
|
409 |
Tcl_DStringFree(&tsdPtr->line);
|
410 |
if (!Tcl_CommandComplete(cmd)) {
|
411 |
gotPartial = 1;
|
412 |
goto prompt;
|
413 |
}
|
414 |
gotPartial = 0;
|
415 |
|
416 |
/*
|
417 |
* Disable the stdin channel handler while evaluating the command;
|
418 |
* otherwise if the command re-enters the event loop we might
|
419 |
* process commands from stdin before the current command is
|
420 |
* finished. Among other things, this will trash the text of the
|
421 |
* command being evaluated.
|
422 |
*/
|
423 |
|
424 |
Tcl_CreateChannelHandler(chan, 0, StdinProc, (ClientData) chan);
|
425 |
code = Tcl_RecordAndEval(interp, cmd, TCL_EVAL_GLOBAL);
|
426 |
|
427 |
chan = Tcl_GetStdChannel(TCL_STDIN);
|
428 |
if (chan) {
|
429 |
Tcl_CreateChannelHandler(chan, TCL_READABLE, StdinProc,
|
430 |
(ClientData) chan);
|
431 |
}
|
432 |
Tcl_DStringFree(&tsdPtr->command);
|
433 |
if (Tcl_GetStringResult(interp)[0] != '\0') {
|
434 |
if ((code != TCL_OK) || (tsdPtr->tty)) {
|
435 |
chan = Tcl_GetStdChannel(TCL_STDOUT);
|
436 |
if (chan) {
|
437 |
Tcl_WriteObj(chan, Tcl_GetObjResult(interp));
|
438 |
Tcl_WriteChars(chan, "\n", 1);
|
439 |
}
|
440 |
}
|
441 |
}
|
442 |
|
443 |
/*
|
444 |
* Output a prompt.
|
445 |
*/
|
446 |
|
447 |
prompt:
|
448 |
if (tsdPtr->tty) {
|
449 |
Prompt(interp, gotPartial);
|
450 |
}
|
451 |
Tcl_ResetResult(interp);
|
452 |
}
|
453 |
|
454 |
/*
|
455 |
*----------------------------------------------------------------------
|
456 |
*
|
457 |
* Prompt --
|
458 |
*
|
459 |
* Issue a prompt on standard output, or invoke a script
|
460 |
* to issue the prompt.
|
461 |
*
|
462 |
* Results:
|
463 |
* None.
|
464 |
*
|
465 |
* Side effects:
|
466 |
* A prompt gets output, and a Tcl script may be evaluated
|
467 |
* in interp.
|
468 |
*
|
469 |
*----------------------------------------------------------------------
|
470 |
*/
|
471 |
|
472 |
static void
|
473 |
Prompt(interp, partial)
|
474 |
Tcl_Interp *interp; /* Interpreter to use for prompting. */
|
475 |
int partial; /* Non-zero means there already
|
476 |
* exists a partial command, so use
|
477 |
* the secondary prompt. */
|
478 |
{
|
479 |
char *promptCmd;
|
480 |
int code;
|
481 |
Tcl_Channel outChannel, errChannel;
|
482 |
|
483 |
promptCmd = Tcl_GetVar(interp,
|
484 |
partial ? "tcl_prompt2" : "tcl_prompt1", TCL_GLOBAL_ONLY);
|
485 |
if (promptCmd == NULL) {
|
486 |
defaultPrompt:
|
487 |
if (!partial) {
|
488 |
|
489 |
/*
|
490 |
* We must check that outChannel is a real channel - it
|
491 |
* is possible that someone has transferred stdout out of
|
492 |
* this interpreter with "interp transfer".
|
493 |
*/
|
494 |
|
495 |
outChannel = Tcl_GetChannel(interp, "stdout", NULL);
|
496 |
if (outChannel != (Tcl_Channel) NULL) {
|
497 |
Tcl_WriteChars(outChannel, "% ", 2);
|
498 |
}
|
499 |
}
|
500 |
} else {
|
501 |
code = Tcl_Eval(interp, promptCmd);
|
502 |
if (code != TCL_OK) {
|
503 |
Tcl_AddErrorInfo(interp,
|
504 |
"\n (script that generates prompt)");
|
505 |
/*
|
506 |
* We must check that errChannel is a real channel - it
|
507 |
* is possible that someone has transferred stderr out of
|
508 |
* this interpreter with "interp transfer".
|
509 |
*/
|
510 |
|
511 |
errChannel = Tcl_GetChannel(interp, "stderr", NULL);
|
512 |
if (errChannel != (Tcl_Channel) NULL) {
|
513 |
Tcl_WriteObj(errChannel, Tcl_GetObjResult(interp));
|
514 |
Tcl_WriteChars(errChannel, "\n", 1);
|
515 |
}
|
516 |
goto defaultPrompt;
|
517 |
}
|
518 |
}
|
519 |
outChannel = Tcl_GetChannel(interp, "stdout", NULL);
|
520 |
if (outChannel != (Tcl_Channel) NULL) {
|
521 |
Tcl_Flush(outChannel);
|
522 |
}
|
523 |
}
|
524 |
|
525 |
/* End of tkmain.c */
|