summaryrefslogtreecommitdiffstats
path: root/macosx/tkMacOSXInit.c
blob: 615b35dddbe1b8e84e2e5033acbe2aff615ebf08 (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
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
/*
 * tkMacOSXInit.c --
 *
 *	This file contains Mac OS X -specific interpreter initialization
 *	functions.
 *
 * Copyright (c) 1995-1997 Sun Microsystems, Inc.
 * Copyright 2001, Apple Computer, Inc.
 * Copyright (c) 2005-2007 Daniel A. Steffen <das@users.sourceforge.net>
 *
 * See the file "license.terms" for information on usage and redistribution
 * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
 *
 * RCS: @(#) $Id: tkMacOSXInit.c,v 1.33 2007/09/06 19:33:56 dgp Exp $
 */

#include "tkMacOSXPrivate.h"

#include "tclInt.h" /* for Tcl_GetStartupScript() & Tcl_SetStartupScript() */

#include <sys/stat.h>
#include <sys/utsname.h>
#include <mach-o/dyld.h>
#include <mach-o/getsect.h>

/*
 * Define the following to 0 to not attempt to use an undocumented SPI
 * to notify the window server that an unbundled executable is a full
 * GUI application after loading Tk.
 */
#ifndef MAC_OSX_TK_USE_CPS_SPI
#define MAC_OSX_TK_USE_CPS_SPI 1
#endif

/*
 * The following structures are used to map the script/language codes of a
 * font to the name that should be passed to Tcl_GetEncoding() to obtain
 * the encoding for that font. The set of numeric constants is fixed and
 * defined by Apple.
 */

typedef struct Map {
    CFStringEncoding numKey;
    const char *strKey;
} Map;

static Map scriptMap[] = {
    {smRoman,		"macRoman"},
    {smJapanese,	"macJapan"},
    {smTradChinese,	"macChinese"},
    {smKorean,		"macKorean"},
    {smArabic,		"macArabic"},
    {smHebrew,		"macHebrew"},
    {smGreek,		"macGreek"},
    {smCyrillic,	"macCyrillic"},
    {smRSymbol,		"macRSymbol"},
    {smDevanagari,	"macDevanagari"},
    {smGurmukhi,	"macGurmukhi"},
    {smGujarati,	"macGujarati"},
    {smOriya,		"macOriya"},
    {smBengali,		"macBengali"},
    {smTamil,		"macTamil"},
    {smTelugu,		"macTelugu"},
    {smKannada,		"macKannada"},
    {smMalayalam,	"macMalayalam"},
    {smSinhalese,	"macSinhalese"},
    {smBurmese,		"macBurmese"},
    {smKhmer,		"macKhmer"},
    {smThai,		"macThailand"},
    {smLaotian,		"macLaos"},
    {smGeorgian,	"macGeorgia"},
    {smArmenian,	"macArmenia"},
    {smSimpChinese,	"macSimpChinese"},
    {smTibetan,		"macTIbet"},
    {smMongolian,	"macMongolia"},
    {smGeez,		"macEthiopia"},
    {smEastEurRoman,	"macCentEuro"},
    {smVietnamese,	"macVietnam"},
    {smExtArabic,	"macSindhi"},
    {0,			NULL}
};

Tcl_Encoding TkMacOSXCarbonEncoding = NULL;

/*
 * If the App is in an App package, then we want to add the Scripts
 * directory to the auto_path.
 */
static char scriptPath[PATH_MAX + 1] = "";

float tkMacOSXToolboxVersionNumber = 0;


/*
 *----------------------------------------------------------------------
 *
 * TkpInit --
 *
 *	Performs Mac-specific interpreter initialization related to the
 *	tk_library variable.
 *
 * Results:
 *	Returns a standard Tcl result. Leaves an error message or result
 *	in the interp's result.
 *
 * Side effects:
 *	Sets "tk_library" Tcl variable, runs "tk.tcl" script.
 *
 *----------------------------------------------------------------------
 */

int
TkpInit(
    Tcl_Interp *interp)
{
    static char tkLibPath[PATH_MAX + 1];
    static int initialized = 0;

    Tk_MacOSXSetupTkNotifier();

    /*
     * Since it is possible for TkInit to be called multiple times
     * and we don't want to do the following initialization multiple times
     * we protect against doing it more than once.
     */

    if (!initialized) {
	int bundledExecutable = 0;
	CFBundleRef bundleRef;
	CFURLRef bundleUrl = NULL;
	CFStringEncoding encoding;
	const char *encodingStr = NULL;
	int  i;
	struct utsname name;
	long osVersion = 0;

	initialized = 1;
	
	/*
	 * Initialize/check OS version variable for runtime checks.
	 */
	
	if (!uname(&name)) {
	    osVersion = strtol(name.release, NULL, 10) - 4;
	}
	if (osVersion && osVersion < (MAC_OS_X_VERSION_MIN_REQUIRED-1000)/10) {
	    Tcl_Panic("Mac OS X 10.%d or later required !",
		(MAC_OS_X_VERSION_MIN_REQUIRED-1000)/10);
	}
	TK_IF_MAC_OS_X_API (3, &kHIToolboxVersionNumber,
	    tkMacOSXToolboxVersionNumber = kHIToolboxVersionNumber;
	) TK_ELSE_MAC_OS_X (3,
	    if (osVersion > 5) {
		tkMacOSXToolboxVersionNumber = INFINITY;
	    } else if (osVersion >= 3) {
		static const float tbVersions[3] = {
		    kHIToolboxVersionNumber10_3,
		    kHIToolboxVersionNumber10_4,
		    kHIToolboxVersionNumber10_5,
		};

		tkMacOSXToolboxVersionNumber = tbVersions[osVersion-3];
	    }
	) TK_ENDIF

	/*
	 * When Tk is in a framework, force tcl_findLibrary to look in the
	 * framework scripts directory.
	 * FIXME: Should we come up with a more generic way of doing this?
	 */

#ifdef TK_FRAMEWORK
	if (Tcl_MacOSXOpenVersionedBundleResources(interp,
		"com.tcltk.tklibrary", TK_FRAMEWORK_VERSION, 1, PATH_MAX,
		tkLibPath) != TCL_OK)
#endif
	    {
	    /* Tk.framework not found, check if resource file is open */
	    Handle rsrc = Get1NamedResource('CURS', "\phand");
	    if (rsrc) {
		ReleaseResource(rsrc);
	    } else {
#ifndef __LP64__
		const struct mach_header *image;
		char *data = NULL;
		uint32_t size;
		int fd = -1;
		char fileName[L_tmpnam + 15];
		uint32_t i, n;

		/* Get resource data from __tk_rsrc section of tk dylib file*/
		n = _dyld_image_count();
		for (i = 0; i < n; i++) {
		    image = _dyld_get_image_header(i);
		    if (image) {
			data = getsectdatafromheader(image, SEG_TEXT,
					"__tk_rsrc", (void*)&size);
			if (data) {
			    data += _dyld_get_image_vmaddr_slide(i);
			    break;
			}
		    }
		}
		while (data) {
		    FSRef ref;
		    SInt16 refNum;

		    /*
		     * Write resource data to temporary file and open it.
		     */

		    strcpy(fileName, P_tmpdir);
		    if (fileName[strlen(fileName) - 1] != '/') {
			strcat(fileName, "/");
		    }
		    strcat(fileName, "tkMacOSX_XXXXXX");
		    fd = mkstemp(fileName);
		    if (fd == -1) {
			break;
		    }
		    fcntl(fd, F_SETFD, FD_CLOEXEC);
		    if (write(fd, data, size) == -1) {
			break;
		    }
		    if(ChkErr(FSPathMakeRef, (unsigned char*)fileName, &ref,
			    NULL) != noErr) {
			break;
		    }
		    ChkErr(FSOpenResourceFile, &ref, 0, NULL, fsRdPerm,
			    &refNum);
		    break;
		}
		if (fd != -1) {
		    unlink(fileName);
		    close(fd);
		}
#endif /* __LP64__ */
	    }
	}

	/*
	 * If we are loaded into an executable that is not a bundled
	 * application, the window server does not let us come to the
	 * foreground. For such an executable, notify the window server that
	 * we are now a full GUI application.
	 */

	/* Check whether we are a bundled executable: */
	bundleRef = CFBundleGetMainBundle();
	if (bundleRef) {
	    bundleUrl = CFBundleCopyBundleURL(bundleRef);
	}
	if (bundleUrl) {
	    /*
	     * A bundled executable is two levels down from its main bundle
	     * directory (e.g. Wish.app/Contents/MacOS/Wish), whereas an
	     * unbundled executable's main bundle directory is just the
	     * directory containing the executable. So to check whether we are
	     * bundled, we delete the last three path components of the
	     * executable's url and compare the resulting url with the main
	     * bundle url.
	     */
	    int j = 3;
	    CFURLRef url = CFBundleCopyExecutableURL(bundleRef);
	    while (url && j--) {
		CFURLRef parent = CFURLCreateCopyDeletingLastPathComponent(NULL,
			url);
		CFRelease(url);
		url = parent;
	    }
	    if (url) {
		bundledExecutable = CFEqual(bundleUrl, url);
		CFRelease(url);
	    }
	    CFRelease(bundleUrl);
	}

	/* If we are not a bundled executable, notify the window server that
	 * we are a foregroundable app. */
	if (!bundledExecutable) {
	    OSStatus err = procNotFound;
	    ProcessSerialNumber psn = { 0, kCurrentProcess };

	    TK_IF_MAC_OS_X_API (3, TransformProcessType,
		err = ChkErr(TransformProcessType, &psn,
			kProcessTransformToForegroundApplication);
	    ) TK_ENDIF
#if MAC_OSX_TK_USE_CPS_SPI
	    if (err != noErr) {
		/*
		 * When building or running on 10.2 or when the above fails,
		 * attempt to use undocumented CPS SPI to notify the window
		 * server. Load the SPI symbol dynamically, so that we don't
		 * break if it ever disappears or changes its name.
		 */
		TkMacOSXInitNamedSymbol(CoreGraphics, OSStatus,
			CPSEnableForegroundOperation, ProcessSerialNumberPtr);
		if (CPSEnableForegroundOperation) {
		    ChkErr(CPSEnableForegroundOperation, &psn);
		}
	    }
#endif /* MAC_OSX_TK_USE_CPS_SPI */
	}

	TkMacOSXInitAppleEvents(interp);
	TkMacOSXInitCarbonEvents(interp);
	TkMacOSXInitMenus(interp);
	TkMacOSXUseAntialiasedText(interp, -1);
	TkMacOSXInitCGDrawing(interp, TRUE, 0);
	TkMacOSXInitKeyboard(interp);

	encoding = CFStringGetSystemEncoding();

	for (i = 0; scriptMap[i].strKey != NULL; i++) {
	    if (scriptMap[i].numKey == encoding) {
		encodingStr = scriptMap[i].strKey;
		break;
	    }
	}
	if (encodingStr == NULL) {
	    encodingStr = "macRoman";
	}

	TkMacOSXCarbonEncoding = Tcl_GetEncoding(NULL, encodingStr);
	if (TkMacOSXCarbonEncoding == NULL) {
	    TkMacOSXCarbonEncoding = Tcl_GetEncoding(NULL, NULL);
	}

	/*
	 * FIXME: Close stdin & stdout for remote debugging otherwise we
	 * will fight with gdb for stdin & stdout
	 */

	if (getenv("XCNOSTDIN") != NULL) {
	    close(0);
	    close(1);
	}

	/*
	 * If we don't have a TTY and stdin is a special character file of
	 * length 0, (e.g. /dev/null, which is what Finder sets when double
	 * clicking Wish) then use the Tk based console interpreter.
	 */

	if (!isatty(0)) {
	    struct stat st;

	    if (fstat(0, &st) || (S_ISCHR(st.st_mode) && st.st_blocks == 0)) {
		Tk_InitConsoleChannels(interp);
		Tcl_RegisterChannel(interp, Tcl_GetStdChannel(TCL_STDIN));
		Tcl_RegisterChannel(interp, Tcl_GetStdChannel(TCL_STDOUT));
		Tcl_RegisterChannel(interp, Tcl_GetStdChannel(TCL_STDERR));

		/*
		 * Only show the console if we don't have a startup script
		 * and tcl_interactive hasn't been set already.
		 */

		if (Tcl_GetStartupScript(NULL) == NULL) {
		    const char *intvar = Tcl_GetVar(interp,
			    "tcl_interactive", TCL_GLOBAL_ONLY);

		    if (intvar == NULL) {
			Tcl_SetVar(interp, "tcl_interactive", "1",
				TCL_GLOBAL_ONLY);
		    }
		}
		if (Tk_CreateConsoleWindow(interp) == TCL_ERROR) {
		    return TCL_ERROR;
		}
	    }
	}
    }

    if (tkLibPath[0] != '\0') {
	Tcl_SetVar(interp, "tk_library", tkLibPath, TCL_GLOBAL_ONLY);
    }

    if (scriptPath[0] != '\0') {
	Tcl_SetVar(interp, "auto_path", scriptPath,
		TCL_GLOBAL_ONLY|TCL_LIST_ELEMENT|TCL_APPEND_VALUE);
    }

    return TCL_OK;
}

/*
 *----------------------------------------------------------------------
 *
 * TkpGetAppName --
 *
 *	Retrieves the name of the current application from a platform
 *	specific location. For Unix, the application name is the tail
 *	of the path contained in the tcl variable argv0.
 *
 * Results:
 *	Returns the application name in the given Tcl_DString.
 *
 * Side effects:
 *	None.
 *
 *----------------------------------------------------------------------
 */

void
TkpGetAppName(
    Tcl_Interp *interp,
    Tcl_DString *namePtr)	/* A previously initialized Tcl_DString. */
{
    const char *p, *name;

    name = Tcl_GetVar(interp, "argv0", TCL_GLOBAL_ONLY);
    if ((name == NULL) || (*name == 0)) {
	name = "tk";
    } else {
	p = strrchr(name, '/');
	if (p != NULL) {
	    name = p+1;
	}
    }
    Tcl_DStringAppend(namePtr, name, -1);
}

/*
 *----------------------------------------------------------------------
 *
 * TkpDisplayWarning --
 *
 *	This routines is called from Tk_Main to display warning
 *	messages that occur during startup.
 *
 * Results:
 *	None.
 *
 * Side effects:
 *	Generates messages on stdout.
 *
 *----------------------------------------------------------------------
 */

void
TkpDisplayWarning(
    CONST char *msg,		/* Message to be displayed. */
    CONST char *title)		/* Title of warning. */
{
    Tcl_Channel errChannel = Tcl_GetStdChannel(TCL_STDERR);
    if (errChannel) {
	Tcl_WriteChars(errChannel, title, -1);
	Tcl_WriteChars(errChannel, ": ", 2);
	Tcl_WriteChars(errChannel, msg, -1);
	Tcl_WriteChars(errChannel, "\n", 1);
    }
}

/*
 *----------------------------------------------------------------------
 *
 * TkMacOSXDefaultStartupScript --
 *
 *
 *	On MacOS X, we look for a file in the Resources/Scripts
 *	directory called AppMain.tcl and if found, we set argv[1] to
 *	that, so that the rest of the code will find it, and add the
 *	Scripts folder to the auto_path. If we don't find the startup
 *	script, we just bag it, assuming the user is starting up some
 *	other way.
 *
 * Results:
 *	None.
 *
 * Side effects:
 *	Tcl_SetStartupScript() called when AppMain.tcl found.
 *
 *----------------------------------------------------------------------
 */

MODULE_SCOPE void
TkMacOSXDefaultStartupScript(void)
{
    CFBundleRef bundleRef;

    bundleRef = CFBundleGetMainBundle();

    if (bundleRef != NULL) {
	CFURLRef appMainURL;
	appMainURL = CFBundleCopyResourceURL(bundleRef,
		CFSTR("AppMain"),
		CFSTR("tcl"),
		CFSTR("Scripts"));

	if (appMainURL != NULL) {
	    CFURLRef scriptFldrURL;
	    char startupScript[PATH_MAX + 1];

	    if (CFURLGetFileSystemRepresentation (appMainURL, true,
		    (unsigned char*) startupScript, PATH_MAX)) {
		Tcl_SetStartupScript(Tcl_NewStringObj(startupScript, -1), NULL);
		scriptFldrURL = CFURLCreateCopyDeletingLastPathComponent(
			NULL, appMainURL);
		if (scriptFldrURL != NULL) {
		    CFURLGetFileSystemRepresentation(scriptFldrURL,
			    true, (unsigned char*) scriptPath, PATH_MAX);
		    CFRelease(scriptFldrURL);
		}
	    }
	    CFRelease(appMainURL);
	}
    }
}

/*
 *----------------------------------------------------------------------
 *
 * TkMacOSXGetNamedSymbol --
 *
 *
 *	Dynamically acquire address of a named symbol from a loaded
 *	dynamic library, so that we can use API that may not be
 *	available on all OS versions.
 *	If module is non-NULL and not the empty string, use twolevel
 *	namespace lookup.
 *
 * Results:
 *	Address of given symbol or NULL if unavailable.
 *
 * Side effects:
 *	None.
 *
 *----------------------------------------------------------------------
 */

MODULE_SCOPE void*
TkMacOSXGetNamedSymbol(
    const char* module,
    const char* symbol)
{
    NSSymbol nsSymbol = NULL;
    if (module && *module) {
	if(NSIsSymbolNameDefinedWithHint(symbol, module)) {
	    nsSymbol = NSLookupAndBindSymbolWithHint(symbol, module);
	}
    } else {
	if(NSIsSymbolNameDefined(symbol)) {
	    nsSymbol = NSLookupAndBindSymbol(symbol);
	}
    }
    if (nsSymbol) {
	return NSAddressOfSymbol(nsSymbol);
    } else {
	return NULL;
    }
}