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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4. The directory name has changed: no version number in the expanded directory now.
author Franz Glasner <fzglas.hg@dom66.de>
date Mon, 15 Sep 2025 11:43:07 +0200
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1:1d09e1dec1d9 2:b50eed0cc0ef
1 /*
2 * Copyright © 2012,2013 Mozilla Foundation.
3 * Copyright © 2012,2013 Google, Inc.
4 *
5 * This is part of HarfBuzz, a text shaping library.
6 *
7 * Permission is hereby granted, without written agreement and without
8 * license or royalty fees, to use, copy, modify, and distribute this
9 * software and its documentation for any purpose, provided that the
10 * above copyright notice and the following two paragraphs appear in
11 * all copies of this software.
12 *
13 * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
14 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
15 * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
16 * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
17 * DAMAGE.
18 *
19 * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
20 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
21 * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
22 * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
23 * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
24 *
25 * Mozilla Author(s): Jonathan Kew
26 * Google Author(s): Behdad Esfahbod
27 */
28
29 #include "hb.hh"
30
31 #ifdef HAVE_CORETEXT
32
33 #include "hb-shaper-impl.hh"
34
35 #include "hb-coretext.h"
36 #include "hb-aat-layout.hh"
37
38
39 /**
40 * SECTION:hb-coretext
41 * @title: hb-coretext
42 * @short_description: CoreText integration
43 * @include: hb-coretext.h
44 *
45 * Functions for using HarfBuzz with the CoreText fonts.
46 **/
47
48 /* https://developer.apple.com/documentation/coretext/1508745-ctfontcreatewithgraphicsfont */
49 #define HB_CORETEXT_DEFAULT_FONT_SIZE 12.f
50
51 static void
52 release_table_data (void *user_data)
53 {
54 CFDataRef cf_data = reinterpret_cast<CFDataRef> (user_data);
55 CFRelease(cf_data);
56 }
57
58 static hb_blob_t *
59 _hb_cg_reference_table (hb_face_t *face HB_UNUSED, hb_tag_t tag, void *user_data)
60 {
61 CGFontRef cg_font = reinterpret_cast<CGFontRef> (user_data);
62 CFDataRef cf_data = CGFontCopyTableForTag (cg_font, tag);
63 if (unlikely (!cf_data))
64 return nullptr;
65
66 const char *data = reinterpret_cast<const char*> (CFDataGetBytePtr (cf_data));
67 const size_t length = CFDataGetLength (cf_data);
68 if (!data || !length)
69 {
70 CFRelease (cf_data);
71 return nullptr;
72 }
73
74 return hb_blob_create (data, length, HB_MEMORY_MODE_READONLY,
75 reinterpret_cast<void *> (const_cast<__CFData *> (cf_data)),
76 release_table_data);
77 }
78
79 static void
80 _hb_cg_font_release (void *data)
81 {
82 CGFontRelease ((CGFontRef) data);
83 }
84
85
86 static CTFontDescriptorRef
87 get_last_resort_font_desc ()
88 {
89 // TODO Handle allocation failures?
90 CTFontDescriptorRef last_resort = CTFontDescriptorCreateWithNameAndSize (CFSTR("LastResort"), 0);
91 CFArrayRef cascade_list = CFArrayCreate (kCFAllocatorDefault,
92 (const void **) &last_resort,
93 1,
94 &kCFTypeArrayCallBacks);
95 CFRelease (last_resort);
96 CFDictionaryRef attributes = CFDictionaryCreate (kCFAllocatorDefault,
97 (const void **) &kCTFontCascadeListAttribute,
98 (const void **) &cascade_list,
99 1,
100 &kCFTypeDictionaryKeyCallBacks,
101 &kCFTypeDictionaryValueCallBacks);
102 CFRelease (cascade_list);
103
104 CTFontDescriptorRef font_desc = CTFontDescriptorCreateWithAttributes (attributes);
105 CFRelease (attributes);
106 return font_desc;
107 }
108
109 static void
110 release_data (void *info, const void *data, size_t size)
111 {
112 assert (hb_blob_get_length ((hb_blob_t *) info) == size &&
113 hb_blob_get_data ((hb_blob_t *) info, nullptr) == data);
114
115 hb_blob_destroy ((hb_blob_t *) info);
116 }
117
118 static CGFontRef
119 create_cg_font (hb_face_t *face)
120 {
121 CGFontRef cg_font = nullptr;
122 if (face->destroy == _hb_cg_font_release)
123 {
124 cg_font = CGFontRetain ((CGFontRef) face->user_data);
125 }
126 else
127 {
128 hb_blob_t *blob = hb_face_reference_blob (face);
129 unsigned int blob_length;
130 const char *blob_data = hb_blob_get_data (blob, &blob_length);
131 if (unlikely (!blob_length))
132 DEBUG_MSG (CORETEXT, face, "Face has empty blob");
133
134 CGDataProviderRef provider = CGDataProviderCreateWithData (blob, blob_data, blob_length, &release_data);
135 if (likely (provider))
136 {
137 cg_font = CGFontCreateWithDataProvider (provider);
138 if (unlikely (!cg_font))
139 DEBUG_MSG (CORETEXT, face, "Face CGFontCreateWithDataProvider() failed");
140 CGDataProviderRelease (provider);
141 }
142 }
143 return cg_font;
144 }
145
146 static CTFontRef
147 create_ct_font (CGFontRef cg_font, CGFloat font_size)
148 {
149 CTFontRef ct_font = nullptr;
150
151 /* CoreText does not enable trak table usage / tracking when creating a CTFont
152 * using CTFontCreateWithGraphicsFont. The only way of enabling tracking seems
153 * to be through the CTFontCreateUIFontForLanguage call. */
154 CFStringRef cg_postscript_name = CGFontCopyPostScriptName (cg_font);
155 if (CFStringHasPrefix (cg_postscript_name, CFSTR (".SFNSText")) ||
156 CFStringHasPrefix (cg_postscript_name, CFSTR (".SFNSDisplay")))
157 {
158 #if !(defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE) && MAC_OS_X_VERSION_MIN_REQUIRED < 1080
159 # define kCTFontUIFontSystem kCTFontSystemFontType
160 # define kCTFontUIFontEmphasizedSystem kCTFontEmphasizedSystemFontType
161 #endif
162 CTFontUIFontType font_type = kCTFontUIFontSystem;
163 if (CFStringHasSuffix (cg_postscript_name, CFSTR ("-Bold")))
164 font_type = kCTFontUIFontEmphasizedSystem;
165
166 ct_font = CTFontCreateUIFontForLanguage (font_type, font_size, nullptr);
167 CFStringRef ct_result_name = CTFontCopyPostScriptName(ct_font);
168 if (CFStringCompare (ct_result_name, cg_postscript_name, 0) != kCFCompareEqualTo)
169 {
170 CFRelease(ct_font);
171 ct_font = nullptr;
172 }
173 CFRelease (ct_result_name);
174 }
175 CFRelease (cg_postscript_name);
176
177 if (!ct_font)
178 ct_font = CTFontCreateWithGraphicsFont (cg_font, font_size, nullptr, nullptr);
179
180 if (unlikely (!ct_font)) {
181 DEBUG_MSG (CORETEXT, cg_font, "Font CTFontCreateWithGraphicsFont() failed");
182 return nullptr;
183 }
184
185 /* crbug.com/576941 and crbug.com/625902 and the investigation in the latter
186 * bug indicate that the cascade list reconfiguration occasionally causes
187 * crashes in CoreText on OS X 10.9, thus let's skip this step on older
188 * operating system versions. Except for the emoji font, where _not_
189 * reconfiguring the cascade list causes CoreText crashes. For details, see
190 * crbug.com/549610 */
191 // 0x00070000 stands for "kCTVersionNumber10_10", see CoreText.h
192 #pragma GCC diagnostic push
193 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
194 if (&CTGetCoreTextVersion != nullptr && CTGetCoreTextVersion() < 0x00070000) {
195 #pragma GCC diagnostic pop
196 CFStringRef fontName = CTFontCopyPostScriptName (ct_font);
197 bool isEmojiFont = CFStringCompare (fontName, CFSTR("AppleColorEmoji"), 0) == kCFCompareEqualTo;
198 CFRelease (fontName);
199 if (!isEmojiFont)
200 return ct_font;
201 }
202
203 CFURLRef original_url = nullptr;
204 #if !(defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE) && MAC_OS_X_VERSION_MIN_REQUIRED < 1060
205 ATSFontRef atsFont;
206 FSRef fsref;
207 OSStatus status;
208 atsFont = CTFontGetPlatformFont (ct_font, NULL);
209 status = ATSFontGetFileReference (atsFont, &fsref);
210 if (status == noErr)
211 original_url = CFURLCreateFromFSRef (NULL, &fsref);
212 #else
213 original_url = (CFURLRef) CTFontCopyAttribute (ct_font, kCTFontURLAttribute);
214 #endif
215
216 /* Create font copy with cascade list that has LastResort first; this speeds up CoreText
217 * font fallback which we don't need anyway. */
218 {
219 CTFontDescriptorRef last_resort_font_desc = get_last_resort_font_desc ();
220 CTFontRef new_ct_font = CTFontCreateCopyWithAttributes (ct_font, 0.0, nullptr, last_resort_font_desc);
221 CFRelease (last_resort_font_desc);
222 if (new_ct_font)
223 {
224 /* The CTFontCreateCopyWithAttributes call fails to stay on the same font
225 * when reconfiguring the cascade list and may switch to a different font
226 * when there are fonts that go by the same name, since the descriptor is
227 * just name and size.
228 *
229 * Avoid reconfiguring the cascade lists if the new font is outside the
230 * system locations that we cannot access from the sandboxed renderer
231 * process in Blink. This can be detected by the new file URL location
232 * that the newly found font points to. */
233 CFURLRef new_url = nullptr;
234 #if !(defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE) && MAC_OS_X_VERSION_MIN_REQUIRED < 1060
235 atsFont = CTFontGetPlatformFont (new_ct_font, NULL);
236 status = ATSFontGetFileReference (atsFont, &fsref);
237 if (status == noErr)
238 new_url = CFURLCreateFromFSRef (NULL, &fsref);
239 #else
240 new_url = (CFURLRef) CTFontCopyAttribute (new_ct_font, kCTFontURLAttribute);
241 #endif
242 // Keep reconfigured font if URL cannot be retrieved (seems to be the case
243 // on Mac OS 10.12 Sierra), speculative fix for crbug.com/625606
244 if (!original_url || !new_url || CFEqual (original_url, new_url)) {
245 CFRelease (ct_font);
246 ct_font = new_ct_font;
247 } else {
248 CFRelease (new_ct_font);
249 DEBUG_MSG (CORETEXT, ct_font, "Discarding reconfigured CTFont, location changed.");
250 }
251 if (new_url)
252 CFRelease (new_url);
253 }
254 else
255 DEBUG_MSG (CORETEXT, ct_font, "Font copy with empty cascade list failed");
256 }
257
258 if (original_url)
259 CFRelease (original_url);
260 return ct_font;
261 }
262
263 hb_coretext_face_data_t *
264 _hb_coretext_shaper_face_data_create (hb_face_t *face)
265 {
266 CGFontRef cg_font = create_cg_font (face);
267
268 if (unlikely (!cg_font))
269 {
270 DEBUG_MSG (CORETEXT, face, "CGFont creation failed..");
271 return nullptr;
272 }
273
274 return (hb_coretext_face_data_t *) cg_font;
275 }
276
277 void
278 _hb_coretext_shaper_face_data_destroy (hb_coretext_face_data_t *data)
279 {
280 CFRelease ((CGFontRef) data);
281 }
282
283 /**
284 * hb_coretext_face_create:
285 * @cg_font: The CGFontRef to work upon
286 *
287 * Creates an #hb_face_t face object from the specified
288 * CGFontRef.
289 *
290 * Return value: the new #hb_face_t face object
291 *
292 * Since: 0.9.10
293 */
294 hb_face_t *
295 hb_coretext_face_create (CGFontRef cg_font)
296 {
297 return hb_face_create_for_tables (_hb_cg_reference_table, CGFontRetain (cg_font), _hb_cg_font_release);
298 }
299
300 /**
301 * hb_coretext_face_get_cg_font:
302 * @face: The #hb_face_t to work upon
303 *
304 * Fetches the CGFontRef associated with an #hb_face_t
305 * face object
306 *
307 * Return value: the CGFontRef found
308 *
309 * Since: 0.9.10
310 */
311 CGFontRef
312 hb_coretext_face_get_cg_font (hb_face_t *face)
313 {
314 return (CGFontRef) (const void *) face->data.coretext;
315 }
316
317
318 hb_coretext_font_data_t *
319 _hb_coretext_shaper_font_data_create (hb_font_t *font)
320 {
321 hb_face_t *face = font->face;
322 const hb_coretext_face_data_t *face_data = face->data.coretext;
323 if (unlikely (!face_data)) return nullptr;
324 CGFontRef cg_font = (CGFontRef) (const void *) face->data.coretext;
325
326 CGFloat font_size = (CGFloat) (font->ptem <= 0.f ? HB_CORETEXT_DEFAULT_FONT_SIZE : font->ptem);
327 CTFontRef ct_font = create_ct_font (cg_font, font_size);
328
329 if (unlikely (!ct_font))
330 {
331 DEBUG_MSG (CORETEXT, font, "CGFont creation failed..");
332 return nullptr;
333 }
334
335 if (font->num_coords)
336 {
337 CFMutableDictionaryRef variations =
338 CFDictionaryCreateMutable (kCFAllocatorDefault,
339 font->num_coords,
340 &kCFTypeDictionaryKeyCallBacks,
341 &kCFTypeDictionaryValueCallBacks);
342
343 for (unsigned i = 0; i < font->num_coords; i++)
344 {
345 if (font->coords[i] == 0.) continue;
346
347 hb_ot_var_axis_info_t info;
348 unsigned int c = 1;
349 hb_ot_var_get_axis_infos (font->face, i, &c, &info);
350 float v = hb_clamp (font->design_coords[i], info.min_value, info.max_value);
351
352 CFNumberRef tag_number = CFNumberCreate (kCFAllocatorDefault, kCFNumberIntType, &info.tag);
353 CFNumberRef value_number = CFNumberCreate (kCFAllocatorDefault, kCFNumberFloatType, &v);
354 CFDictionarySetValue (variations, tag_number, value_number);
355 CFRelease (tag_number);
356 CFRelease (value_number);
357 }
358
359 CFDictionaryRef attributes =
360 CFDictionaryCreate (kCFAllocatorDefault,
361 (const void **) &kCTFontVariationAttribute,
362 (const void **) &variations,
363 1,
364 &kCFTypeDictionaryKeyCallBacks,
365 &kCFTypeDictionaryValueCallBacks);
366
367 CTFontDescriptorRef varDesc = CTFontDescriptorCreateWithAttributes (attributes);
368 CTFontRef new_ct_font = CTFontCreateCopyWithAttributes (ct_font, 0, nullptr, varDesc);
369
370 CFRelease (ct_font);
371 CFRelease (attributes);
372 CFRelease (variations);
373 ct_font = new_ct_font;
374 }
375
376 return (hb_coretext_font_data_t *) ct_font;
377 }
378
379 void
380 _hb_coretext_shaper_font_data_destroy (hb_coretext_font_data_t *data)
381 {
382 CFRelease ((CTFontRef) data);
383 }
384
385 /**
386 * hb_coretext_font_create:
387 * @ct_font: The CTFontRef to work upon
388 *
389 * Creates an #hb_font_t font object from the specified
390 * CTFontRef.
391 *
392 * Return value: the new #hb_font_t font object
393 *
394 * Since: 1.7.2
395 **/
396 hb_font_t *
397 hb_coretext_font_create (CTFontRef ct_font)
398 {
399 CGFontRef cg_font = CTFontCopyGraphicsFont (ct_font, nullptr);
400 hb_face_t *face = hb_coretext_face_create (cg_font);
401 CFRelease (cg_font);
402 hb_font_t *font = hb_font_create (face);
403 hb_face_destroy (face);
404
405 if (unlikely (hb_object_is_immutable (font)))
406 return font;
407
408 hb_font_set_ptem (font, CTFontGetSize (ct_font));
409
410 /* Let there be dragons here... */
411 font->data.coretext.cmpexch (nullptr, (hb_coretext_font_data_t *) CFRetain (ct_font));
412
413 return font;
414 }
415
416 /**
417 * hb_coretext_font_get_ct_font:
418 * @font: #hb_font_t to work upon
419 *
420 * Fetches the CTFontRef associated with the specified
421 * #hb_font_t font object.
422 *
423 * Return value: the CTFontRef found
424 *
425 * Since: 0.9.10
426 */
427 CTFontRef
428 hb_coretext_font_get_ct_font (hb_font_t *font)
429 {
430 CTFontRef ct_font = (CTFontRef) (const void *) font->data.coretext;
431 return ct_font ? (CTFontRef) ct_font : nullptr;
432 }
433
434
435 /*
436 * shaper
437 */
438
439 struct feature_record_t {
440 unsigned int feature;
441 unsigned int setting;
442 };
443
444 struct active_feature_t {
445 feature_record_t rec;
446 unsigned int order;
447
448 HB_INTERNAL static int cmp (const void *pa, const void *pb) {
449 const active_feature_t *a = (const active_feature_t *) pa;
450 const active_feature_t *b = (const active_feature_t *) pb;
451 return a->rec.feature < b->rec.feature ? -1 : a->rec.feature > b->rec.feature ? 1 :
452 a->order < b->order ? -1 : a->order > b->order ? 1 :
453 a->rec.setting < b->rec.setting ? -1 : a->rec.setting > b->rec.setting ? 1 :
454 0;
455 }
456 bool operator== (const active_feature_t& f) const {
457 return cmp (this, &f) == 0;
458 }
459 };
460
461 struct feature_event_t {
462 unsigned int index;
463 bool start;
464 active_feature_t feature;
465
466 HB_INTERNAL static int cmp (const void *pa, const void *pb) {
467 const feature_event_t *a = (const feature_event_t *) pa;
468 const feature_event_t *b = (const feature_event_t *) pb;
469 return a->index < b->index ? -1 : a->index > b->index ? 1 :
470 a->start < b->start ? -1 : a->start > b->start ? 1 :
471 active_feature_t::cmp (&a->feature, &b->feature);
472 }
473 };
474
475 struct range_record_t {
476 CTFontRef font;
477 unsigned int index_first; /* == start */
478 unsigned int index_last; /* == end - 1 */
479 };
480
481
482 hb_bool_t
483 _hb_coretext_shape (hb_shape_plan_t *shape_plan,
484 hb_font_t *font,
485 hb_buffer_t *buffer,
486 const hb_feature_t *features,
487 unsigned int num_features)
488 {
489 hb_face_t *face = font->face;
490 CGFontRef cg_font = (CGFontRef) (const void *) face->data.coretext;
491 CTFontRef ct_font = (CTFontRef) (const void *) font->data.coretext;
492
493 CGFloat ct_font_size = CTFontGetSize (ct_font);
494 CGFloat x_mult = (CGFloat) font->x_scale / ct_font_size;
495 CGFloat y_mult = (CGFloat) font->y_scale / ct_font_size;
496
497 /* Attach marks to their bases, to match the 'ot' shaper.
498 * Adapted from a very old version of hb-ot-shape:hb_form_clusters().
499 * Note that this only makes us be closer to the 'ot' shaper,
500 * but by no means the same. For example, if there's
501 * B1 M1 B2 M2, and B1-B2 form a ligature, M2's cluster will
502 * continue pointing to B2 even though B2 was merged into B1's
503 * cluster... */
504 if (buffer->cluster_level == HB_BUFFER_CLUSTER_LEVEL_MONOTONE_GRAPHEMES)
505 {
506 hb_unicode_funcs_t *unicode = buffer->unicode;
507 unsigned int count = buffer->len;
508 hb_glyph_info_t *info = buffer->info;
509 for (unsigned int i = 1; i < count; i++)
510 if (HB_UNICODE_GENERAL_CATEGORY_IS_MARK (unicode->general_category (info[i].codepoint)))
511 buffer->merge_clusters (i - 1, i + 1);
512 }
513
514 hb_vector_t<feature_record_t> feature_records;
515 hb_vector_t<range_record_t> range_records;
516
517 /*
518 * Set up features.
519 * (copied + modified from code from hb-uniscribe.cc)
520 */
521 if (num_features)
522 {
523 /* Sort features by start/end events. */
524 hb_vector_t<feature_event_t> feature_events;
525 for (unsigned int i = 0; i < num_features; i++)
526 {
527 active_feature_t feature;
528
529 #if MAC_OS_X_VERSION_MIN_REQUIRED < 101000
530 const hb_aat_feature_mapping_t * mapping = hb_aat_layout_find_feature_mapping (features[i].tag);
531 if (!mapping)
532 continue;
533
534 feature.rec.feature = mapping->aatFeatureType;
535 feature.rec.setting = features[i].value ? mapping->selectorToEnable : mapping->selectorToDisable;
536 #else
537 feature.rec.feature = features[i].tag;
538 feature.rec.setting = features[i].value;
539 #endif
540 feature.order = i;
541
542 feature_event_t *event;
543
544 event = feature_events.push ();
545 event->index = features[i].start;
546 event->start = true;
547 event->feature = feature;
548
549 event = feature_events.push ();
550 event->index = features[i].end;
551 event->start = false;
552 event->feature = feature;
553 }
554 feature_events.qsort ();
555 /* Add a strategic final event. */
556 {
557 active_feature_t feature;
558 feature.rec.feature = HB_TAG_NONE;
559 feature.rec.setting = 0;
560 feature.order = num_features + 1;
561
562 feature_event_t *event = feature_events.push ();
563 event->index = 0; /* This value does magic. */
564 event->start = false;
565 event->feature = feature;
566 }
567
568 /* Scan events and save features for each range. */
569 hb_vector_t<active_feature_t> active_features;
570 unsigned int last_index = 0;
571 for (unsigned int i = 0; i < feature_events.length; i++)
572 {
573 feature_event_t *event = &feature_events[i];
574
575 if (event->index != last_index)
576 {
577 /* Save a snapshot of active features and the range. */
578 range_record_t *range = range_records.push ();
579
580 if (active_features.length)
581 {
582 CFMutableArrayRef features_array = CFArrayCreateMutable(kCFAllocatorDefault, 0, &kCFTypeArrayCallBacks);
583
584 /* TODO sort and resolve conflicting features? */
585 /* active_features.qsort (); */
586 for (unsigned int j = 0; j < active_features.length; j++)
587 {
588 #if MAC_OS_X_VERSION_MIN_REQUIRED < 101000
589 CFStringRef keys[] = {
590 kCTFontFeatureTypeIdentifierKey,
591 kCTFontFeatureSelectorIdentifierKey
592 };
593 CFNumberRef values[] = {
594 CFNumberCreate (kCFAllocatorDefault, kCFNumberIntType, &active_features[j].rec.feature),
595 CFNumberCreate (kCFAllocatorDefault, kCFNumberIntType, &active_features[j].rec.setting)
596 };
597 #else
598 char tag[5] = {HB_UNTAG (active_features[j].rec.feature)};
599 CFTypeRef keys[] = {
600 kCTFontOpenTypeFeatureTag,
601 kCTFontOpenTypeFeatureValue
602 };
603 CFTypeRef values[] = {
604 CFStringCreateWithCString (kCFAllocatorDefault, tag, kCFStringEncodingASCII),
605 CFNumberCreate (kCFAllocatorDefault, kCFNumberIntType, &active_features[j].rec.setting)
606 };
607 #endif
608 static_assert ((ARRAY_LENGTH_CONST (keys) == ARRAY_LENGTH_CONST (values)), "");
609 CFDictionaryRef dict = CFDictionaryCreate (kCFAllocatorDefault,
610 (const void **) keys,
611 (const void **) values,
612 ARRAY_LENGTH (keys),
613 &kCFTypeDictionaryKeyCallBacks,
614 &kCFTypeDictionaryValueCallBacks);
615 for (unsigned int i = 0; i < ARRAY_LENGTH (values); i++)
616 CFRelease (values[i]);
617
618 CFArrayAppendValue (features_array, dict);
619 CFRelease (dict);
620
621 }
622
623 CFDictionaryRef attributes = CFDictionaryCreate (kCFAllocatorDefault,
624 (const void **) &kCTFontFeatureSettingsAttribute,
625 (const void **) &features_array,
626 1,
627 &kCFTypeDictionaryKeyCallBacks,
628 &kCFTypeDictionaryValueCallBacks);
629 CFRelease (features_array);
630
631 CTFontDescriptorRef font_desc = CTFontDescriptorCreateWithAttributes (attributes);
632 CFRelease (attributes);
633
634 range->font = CTFontCreateCopyWithAttributes (ct_font, 0.0, nullptr, font_desc);
635 CFRelease (font_desc);
636 }
637 else
638 {
639 range->font = nullptr;
640 }
641
642 range->index_first = last_index;
643 range->index_last = event->index - 1;
644
645 last_index = event->index;
646 }
647
648 if (event->start)
649 {
650 active_features.push (event->feature);
651 } else {
652 active_feature_t *feature = active_features.lsearch (event->feature);
653 if (feature)
654 active_features.remove_ordered (feature - active_features.arrayZ);
655 }
656 }
657 }
658
659 unsigned int scratch_size;
660 hb_buffer_t::scratch_buffer_t *scratch = buffer->get_scratch_buffer (&scratch_size);
661
662 #define ALLOCATE_ARRAY(Type, name, len, on_no_room) \
663 Type *name = (Type *) scratch; \
664 do { \
665 unsigned int _consumed = DIV_CEIL ((len) * sizeof (Type), sizeof (*scratch)); \
666 if (unlikely (_consumed > scratch_size)) \
667 { \
668 on_no_room; \
669 assert (0); \
670 } \
671 scratch += _consumed; \
672 scratch_size -= _consumed; \
673 } while (0)
674
675 ALLOCATE_ARRAY (UniChar, pchars, buffer->len * 2, ((void)nullptr) /*nothing*/);
676 unsigned int chars_len = 0;
677 for (unsigned int i = 0; i < buffer->len; i++) {
678 hb_codepoint_t c = buffer->info[i].codepoint;
679 if (likely (c <= 0xFFFFu))
680 pchars[chars_len++] = c;
681 else if (unlikely (c > 0x10FFFFu))
682 pchars[chars_len++] = 0xFFFDu;
683 else {
684 pchars[chars_len++] = 0xD800u + ((c - 0x10000u) >> 10);
685 pchars[chars_len++] = 0xDC00u + ((c - 0x10000u) & ((1u << 10) - 1));
686 }
687 }
688
689 ALLOCATE_ARRAY (unsigned int, log_clusters, chars_len, ((void)nullptr) /*nothing*/);
690 chars_len = 0;
691 for (unsigned int i = 0; i < buffer->len; i++)
692 {
693 hb_codepoint_t c = buffer->info[i].codepoint;
694 unsigned int cluster = buffer->info[i].cluster;
695 log_clusters[chars_len++] = cluster;
696 if (hb_in_range (c, 0x10000u, 0x10FFFFu))
697 log_clusters[chars_len++] = cluster; /* Surrogates. */
698 }
699
700 #define FAIL(...) \
701 HB_STMT_START { \
702 DEBUG_MSG (CORETEXT, nullptr, __VA_ARGS__); \
703 ret = false; \
704 goto fail; \
705 } HB_STMT_END
706
707 bool ret = true;
708 CFStringRef string_ref = nullptr;
709 CTLineRef line = nullptr;
710
711 if (false)
712 {
713 resize_and_retry:
714 DEBUG_MSG (CORETEXT, buffer, "Buffer resize");
715 /* string_ref uses the scratch-buffer for backing store, and line references
716 * string_ref (via attr_string). We must release those before resizing buffer. */
717 assert (string_ref);
718 assert (line);
719 CFRelease (string_ref);
720 CFRelease (line);
721 string_ref = nullptr;
722 line = nullptr;
723
724 /* Get previous start-of-scratch-area, that we use later for readjusting
725 * our existing scratch arrays. */
726 unsigned int old_scratch_used;
727 hb_buffer_t::scratch_buffer_t *old_scratch;
728 old_scratch = buffer->get_scratch_buffer (&old_scratch_used);
729 old_scratch_used = scratch - old_scratch;
730
731 if (unlikely (!buffer->ensure (buffer->allocated * 2)))
732 FAIL ("Buffer resize failed");
733
734 /* Adjust scratch, pchars, and log_cluster arrays. This is ugly, but really the
735 * cleanest way to do without completely restructuring the rest of this shaper. */
736 scratch = buffer->get_scratch_buffer (&scratch_size);
737 pchars = reinterpret_cast<UniChar *> (((char *) scratch + ((char *) pchars - (char *) old_scratch)));
738 log_clusters = reinterpret_cast<unsigned int *> (((char *) scratch + ((char *) log_clusters - (char *) old_scratch)));
739 scratch += old_scratch_used;
740 scratch_size -= old_scratch_used;
741 }
742 {
743 string_ref = CFStringCreateWithCharactersNoCopy (nullptr,
744 pchars, chars_len,
745 kCFAllocatorNull);
746 if (unlikely (!string_ref))
747 FAIL ("CFStringCreateWithCharactersNoCopy failed");
748
749 /* Create an attributed string, populate it, and create a line from it, then release attributed string. */
750 {
751 CFMutableAttributedStringRef attr_string = CFAttributedStringCreateMutable (kCFAllocatorDefault,
752 chars_len);
753 if (unlikely (!attr_string))
754 FAIL ("CFAttributedStringCreateMutable failed");
755 CFAttributedStringReplaceString (attr_string, CFRangeMake (0, 0), string_ref);
756 if (HB_DIRECTION_IS_VERTICAL (buffer->props.direction))
757 {
758 CFAttributedStringSetAttribute (attr_string, CFRangeMake (0, chars_len),
759 kCTVerticalFormsAttributeName, kCFBooleanTrue);
760 }
761
762 if (buffer->props.language)
763 {
764 /* What's the iOS equivalent of this check?
765 * The symbols was introduced in iOS 7.0.
766 * At any rate, our fallback is safe and works fine. */
767 #if !(defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE) && MAC_OS_X_VERSION_MIN_REQUIRED < 1090
768 # define kCTLanguageAttributeName CFSTR ("NSLanguage")
769 #endif
770 CFStringRef lang = CFStringCreateWithCStringNoCopy (kCFAllocatorDefault,
771 hb_language_to_string (buffer->props.language),
772 kCFStringEncodingUTF8,
773 kCFAllocatorNull);
774 if (unlikely (!lang))
775 {
776 CFRelease (attr_string);
777 FAIL ("CFStringCreateWithCStringNoCopy failed");
778 }
779 CFAttributedStringSetAttribute (attr_string, CFRangeMake (0, chars_len),
780 kCTLanguageAttributeName, lang);
781 CFRelease (lang);
782 }
783 CFAttributedStringSetAttribute (attr_string, CFRangeMake (0, chars_len),
784 kCTFontAttributeName, ct_font);
785
786 if (num_features && range_records.length)
787 {
788 unsigned int start = 0;
789 range_record_t *last_range = &range_records[0];
790 for (unsigned int k = 0; k < chars_len; k++)
791 {
792 range_record_t *range = last_range;
793 while (log_clusters[k] < range->index_first)
794 range--;
795 while (log_clusters[k] > range->index_last)
796 range++;
797 if (range != last_range)
798 {
799 if (last_range->font)
800 CFAttributedStringSetAttribute (attr_string, CFRangeMake (start, k - start),
801 kCTFontAttributeName, last_range->font);
802
803 start = k;
804 }
805
806 last_range = range;
807 }
808 if (start != chars_len && last_range->font)
809 CFAttributedStringSetAttribute (attr_string, CFRangeMake (start, chars_len - start),
810 kCTFontAttributeName, last_range->font);
811 }
812 /* Enable/disable kern if requested.
813 *
814 * Note: once kern is disabled, reenabling it doesn't currently seem to work in CoreText.
815 */
816 if (num_features)
817 {
818 unsigned int zeroint = 0;
819 CFNumberRef zero = CFNumberCreate (kCFAllocatorDefault, kCFNumberIntType, &zeroint);
820 for (unsigned int i = 0; i < num_features; i++)
821 {
822 const hb_feature_t &feature = features[i];
823 if (feature.tag == HB_TAG('k','e','r','n') &&
824 feature.start < chars_len && feature.start < feature.end)
825 {
826 CFRange feature_range = CFRangeMake (feature.start,
827 hb_min (feature.end, chars_len) - feature.start);
828 if (feature.value)
829 CFAttributedStringRemoveAttribute (attr_string, feature_range, kCTKernAttributeName);
830 else
831 CFAttributedStringSetAttribute (attr_string, feature_range, kCTKernAttributeName, zero);
832 }
833 }
834 CFRelease (zero);
835 }
836
837 int level = HB_DIRECTION_IS_FORWARD (buffer->props.direction) ? 0 : 1;
838 CFNumberRef level_number = CFNumberCreate (kCFAllocatorDefault, kCFNumberIntType, &level);
839 #if !(defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE) && MAC_OS_X_VERSION_MIN_REQUIRED < 1060
840 extern const CFStringRef kCTTypesetterOptionForcedEmbeddingLevel;
841 #endif
842 CFDictionaryRef options = CFDictionaryCreate (kCFAllocatorDefault,
843 (const void **) &kCTTypesetterOptionForcedEmbeddingLevel,
844 (const void **) &level_number,
845 1,
846 &kCFTypeDictionaryKeyCallBacks,
847 &kCFTypeDictionaryValueCallBacks);
848 CFRelease (level_number);
849 if (unlikely (!options))
850 {
851 CFRelease (attr_string);
852 FAIL ("CFDictionaryCreate failed");
853 }
854
855 CTTypesetterRef typesetter = CTTypesetterCreateWithAttributedStringAndOptions (attr_string, options);
856 CFRelease (options);
857 CFRelease (attr_string);
858 if (unlikely (!typesetter))
859 FAIL ("CTTypesetterCreateWithAttributedStringAndOptions failed");
860
861 line = CTTypesetterCreateLine (typesetter, CFRangeMake(0, 0));
862 CFRelease (typesetter);
863 if (unlikely (!line))
864 FAIL ("CTTypesetterCreateLine failed");
865 }
866
867 CFArrayRef glyph_runs = CTLineGetGlyphRuns (line);
868 unsigned int num_runs = CFArrayGetCount (glyph_runs);
869 DEBUG_MSG (CORETEXT, nullptr, "Num runs: %d", num_runs);
870
871 buffer->len = 0;
872 uint32_t status_or = 0;
873 CGFloat advances_so_far = 0;
874 /* For right-to-left runs, CoreText returns the glyphs positioned such that
875 * any trailing whitespace is to the left of (0,0). Adjust coordinate system
876 * to fix for that. Test with any RTL string with trailing spaces.
877 * https://crbug.com/469028
878 */
879 if (HB_DIRECTION_IS_BACKWARD (buffer->props.direction))
880 {
881 advances_so_far -= CTLineGetTrailingWhitespaceWidth (line);
882 if (HB_DIRECTION_IS_VERTICAL (buffer->props.direction))
883 advances_so_far = -advances_so_far;
884 }
885
886 const CFRange range_all = CFRangeMake (0, 0);
887
888 for (unsigned int i = 0; i < num_runs; i++)
889 {
890 CTRunRef run = static_cast<CTRunRef>(CFArrayGetValueAtIndex (glyph_runs, i));
891 CTRunStatus run_status = CTRunGetStatus (run);
892 status_or |= run_status;
893 DEBUG_MSG (CORETEXT, run, "CTRunStatus: %x", run_status);
894 CGFloat run_advance = CTRunGetTypographicBounds (run, range_all, nullptr, nullptr, nullptr);
895 if (HB_DIRECTION_IS_VERTICAL (buffer->props.direction))
896 run_advance = -run_advance;
897 DEBUG_MSG (CORETEXT, run, "Run advance: %g", (double) run_advance);
898
899 /* CoreText does automatic font fallback (AKA "cascading") for characters
900 * not supported by the requested font, and provides no way to turn it off,
901 * so we must detect if the returned run uses a font other than the requested
902 * one and fill in the buffer with .notdef glyphs instead of random glyph
903 * indices from a different font.
904 */
905 CFDictionaryRef attributes = CTRunGetAttributes (run);
906 CTFontRef run_ct_font = static_cast<CTFontRef>(CFDictionaryGetValue (attributes, kCTFontAttributeName));
907 if (!CFEqual (run_ct_font, ct_font))
908 {
909 /* The run doesn't use our main font instance. We have to figure out
910 * whether font fallback happened, or this is just CoreText giving us
911 * another CTFont using the same underlying CGFont. CoreText seems
912 * to do that in a variety of situations, one of which being vertical
913 * text, but also perhaps for caching reasons.
914 *
915 * First, see if it uses any of our subfonts created to set font features...
916 *
917 * Next, compare the CGFont to the one we used to create our fonts.
918 * Even this doesn't work all the time.
919 *
920 * Finally, we compare PS names, which I don't think are unique...
921 *
922 * Looks like if we really want to be sure here we have to modify the
923 * font to change the name table, similar to what we do in the uniscribe
924 * backend.
925 *
926 * However, even that wouldn't work if we were passed in the CGFont to
927 * construct a hb_face to begin with.
928 *
929 * See: https://github.com/harfbuzz/harfbuzz/pull/36
930 *
931 * Also see: https://bugs.chromium.org/p/chromium/issues/detail?id=597098
932 */
933 bool matched = false;
934 for (unsigned int i = 0; i < range_records.length; i++)
935 if (range_records[i].font && CFEqual (run_ct_font, range_records[i].font))
936 {
937 matched = true;
938 break;
939 }
940 if (!matched)
941 {
942 CGFontRef run_cg_font = CTFontCopyGraphicsFont (run_ct_font, nullptr);
943 if (run_cg_font)
944 {
945 matched = CFEqual (run_cg_font, cg_font);
946 CFRelease (run_cg_font);
947 }
948 }
949 if (!matched)
950 {
951 CFStringRef font_ps_name = CTFontCopyName (ct_font, kCTFontPostScriptNameKey);
952 CFStringRef run_ps_name = CTFontCopyName (run_ct_font, kCTFontPostScriptNameKey);
953 CFComparisonResult result = CFStringCompare (run_ps_name, font_ps_name, 0);
954 CFRelease (run_ps_name);
955 CFRelease (font_ps_name);
956 if (result == kCFCompareEqualTo)
957 matched = true;
958 }
959 if (!matched)
960 {
961 CFRange range = CTRunGetStringRange (run);
962 DEBUG_MSG (CORETEXT, run, "Run used fallback font: %ld..%ld",
963 range.location, range.location + range.length);
964 if (!buffer->ensure_inplace (buffer->len + range.length))
965 goto resize_and_retry;
966 hb_glyph_info_t *info = buffer->info + buffer->len;
967
968 hb_codepoint_t notdef = 0;
969 hb_direction_t dir = buffer->props.direction;
970 hb_position_t x_advance, y_advance, x_offset, y_offset;
971 hb_font_get_glyph_advance_for_direction (font, notdef, dir, &x_advance, &y_advance);
972 hb_font_get_glyph_origin_for_direction (font, notdef, dir, &x_offset, &y_offset);
973 hb_position_t advance = x_advance + y_advance;
974 x_offset = -x_offset;
975 y_offset = -y_offset;
976
977 unsigned int old_len = buffer->len;
978 for (CFIndex j = range.location; j < range.location + range.length; j++)
979 {
980 UniChar ch = CFStringGetCharacterAtIndex (string_ref, j);
981 if (hb_in_range<UniChar> (ch, 0xDC00u, 0xDFFFu) && range.location < j)
982 {
983 ch = CFStringGetCharacterAtIndex (string_ref, j - 1);
984 if (hb_in_range<UniChar> (ch, 0xD800u, 0xDBFFu))
985 /* This is the second of a surrogate pair. Don't need .notdef
986 * for this one. */
987 continue;
988 }
989 if (buffer->unicode->is_default_ignorable (ch))
990 continue;
991
992 info->codepoint = notdef;
993 info->cluster = log_clusters[j];
994
995 info->mask = advance;
996 info->var1.i32 = x_offset;
997 info->var2.i32 = y_offset;
998
999 info++;
1000 buffer->len++;
1001 }
1002 if (HB_DIRECTION_IS_BACKWARD (buffer->props.direction))
1003 buffer->reverse_range (old_len, buffer->len);
1004 advances_so_far += run_advance;
1005 continue;
1006 }
1007 }
1008
1009 unsigned int num_glyphs = CTRunGetGlyphCount (run);
1010 if (num_glyphs == 0)
1011 continue;
1012
1013 if (!buffer->ensure_inplace (buffer->len + num_glyphs))
1014 goto resize_and_retry;
1015
1016 hb_glyph_info_t *run_info = buffer->info + buffer->len;
1017
1018 /* Testing used to indicate that CTRunGetGlyphsPtr, etc (almost?) always
1019 * succeed, and so copying data to our own buffer will be rare. Reports
1020 * have it that this changed in OS X 10.10 Yosemite, and nullptr is returned
1021 * frequently. At any rate, we can test that codepath by setting USE_PTR
1022 * to false. */
1023
1024 #define USE_PTR true
1025
1026 #define SCRATCH_SAVE() \
1027 unsigned int scratch_size_saved = scratch_size; \
1028 hb_buffer_t::scratch_buffer_t *scratch_saved = scratch
1029
1030 #define SCRATCH_RESTORE() \
1031 scratch_size = scratch_size_saved; \
1032 scratch = scratch_saved
1033
1034 { /* Setup glyphs */
1035 SCRATCH_SAVE();
1036 const CGGlyph* glyphs = USE_PTR ? CTRunGetGlyphsPtr (run) : nullptr;
1037 if (!glyphs) {
1038 ALLOCATE_ARRAY (CGGlyph, glyph_buf, num_glyphs, goto resize_and_retry);
1039 CTRunGetGlyphs (run, range_all, glyph_buf);
1040 glyphs = glyph_buf;
1041 }
1042 const CFIndex* string_indices = USE_PTR ? CTRunGetStringIndicesPtr (run) : nullptr;
1043 if (!string_indices) {
1044 ALLOCATE_ARRAY (CFIndex, index_buf, num_glyphs, goto resize_and_retry);
1045 CTRunGetStringIndices (run, range_all, index_buf);
1046 string_indices = index_buf;
1047 }
1048 hb_glyph_info_t *info = run_info;
1049 for (unsigned int j = 0; j < num_glyphs; j++)
1050 {
1051 info->codepoint = glyphs[j];
1052 info->cluster = log_clusters[string_indices[j]];
1053 info++;
1054 }
1055 SCRATCH_RESTORE();
1056 }
1057 {
1058 /* Setup positions.
1059 * Note that CoreText does not return advances for glyphs. As such,
1060 * for all but last glyph, we use the delta position to next glyph as
1061 * advance (in the advance direction only), and for last glyph we set
1062 * whatever is needed to make the whole run's advance add up. */
1063 SCRATCH_SAVE();
1064 const CGPoint* positions = USE_PTR ? CTRunGetPositionsPtr (run) : nullptr;
1065 if (!positions) {
1066 ALLOCATE_ARRAY (CGPoint, position_buf, num_glyphs, goto resize_and_retry);
1067 CTRunGetPositions (run, range_all, position_buf);
1068 positions = position_buf;
1069 }
1070 hb_glyph_info_t *info = run_info;
1071 if (HB_DIRECTION_IS_HORIZONTAL (buffer->props.direction))
1072 {
1073 hb_position_t x_offset = round ((positions[0].x - advances_so_far) * x_mult);
1074 for (unsigned int j = 0; j < num_glyphs; j++)
1075 {
1076 CGFloat advance;
1077 if (likely (j + 1 < num_glyphs))
1078 advance = positions[j + 1].x - positions[j].x;
1079 else /* last glyph */
1080 advance = run_advance - (positions[j].x - positions[0].x);
1081 /* int cast necessary to pass through negative values. */
1082 info->mask = (int) round (advance * x_mult);
1083 info->var1.i32 = x_offset;
1084 info->var2.i32 = round (positions[j].y * y_mult);
1085 info++;
1086 }
1087 }
1088 else
1089 {
1090 hb_position_t y_offset = round ((positions[0].y - advances_so_far) * y_mult);
1091 for (unsigned int j = 0; j < num_glyphs; j++)
1092 {
1093 CGFloat advance;
1094 if (likely (j + 1 < num_glyphs))
1095 advance = positions[j + 1].y - positions[j].y;
1096 else /* last glyph */
1097 advance = run_advance - (positions[j].y - positions[0].y);
1098 /* int cast necessary to pass through negative values. */
1099 info->mask = (int) round (advance * y_mult);
1100 info->var1.i32 = round (positions[j].x * x_mult);
1101 info->var2.i32 = y_offset;
1102 info++;
1103 }
1104 }
1105 SCRATCH_RESTORE();
1106 advances_so_far += run_advance;
1107 }
1108 #undef SCRATCH_RESTORE
1109 #undef SCRATCH_SAVE
1110 #undef USE_PTR
1111 #undef ALLOCATE_ARRAY
1112
1113 buffer->len += num_glyphs;
1114 }
1115
1116 buffer->clear_positions ();
1117
1118 unsigned int count = buffer->len;
1119 hb_glyph_info_t *info = buffer->info;
1120 hb_glyph_position_t *pos = buffer->pos;
1121 if (HB_DIRECTION_IS_HORIZONTAL (buffer->props.direction))
1122 for (unsigned int i = 0; i < count; i++)
1123 {
1124 pos->x_advance = info->mask;
1125 pos->x_offset = info->var1.i32;
1126 pos->y_offset = info->var2.i32;
1127
1128 info++; pos++;
1129 }
1130 else
1131 for (unsigned int i = 0; i < count; i++)
1132 {
1133 pos->y_advance = info->mask;
1134 pos->x_offset = info->var1.i32;
1135 pos->y_offset = info->var2.i32;
1136
1137 info++; pos++;
1138 }
1139
1140 /* Fix up clusters so that we never return out-of-order indices;
1141 * if core text has reordered glyphs, we'll merge them to the
1142 * beginning of the reordered cluster. CoreText is nice enough
1143 * to tell us whenever it has produced nonmonotonic results...
1144 * Note that we assume the input clusters were nonmonotonic to
1145 * begin with.
1146 *
1147 * This does *not* mean we'll form the same clusters as Uniscribe
1148 * or the native OT backend, only that the cluster indices will be
1149 * monotonic in the output buffer. */
1150 if (count > 1 && (status_or & kCTRunStatusNonMonotonic) &&
1151 buffer->cluster_level != HB_BUFFER_CLUSTER_LEVEL_CHARACTERS)
1152 {
1153 hb_glyph_info_t *info = buffer->info;
1154 if (HB_DIRECTION_IS_FORWARD (buffer->props.direction))
1155 {
1156 unsigned int cluster = info[count - 1].cluster;
1157 for (unsigned int i = count - 1; i > 0; i--)
1158 {
1159 cluster = hb_min (cluster, info[i - 1].cluster);
1160 info[i - 1].cluster = cluster;
1161 }
1162 }
1163 else
1164 {
1165 unsigned int cluster = info[0].cluster;
1166 for (unsigned int i = 1; i < count; i++)
1167 {
1168 cluster = hb_min (cluster, info[i].cluster);
1169 info[i].cluster = cluster;
1170 }
1171 }
1172 }
1173 }
1174
1175 /* TODO: Sometimes the above positioning code generates negative
1176 * advance values. Fix them up. Example, with NotoNastaliqUrdu
1177 * font and sequence ابهد. */
1178
1179 buffer->clear_glyph_flags ();
1180 buffer->unsafe_to_break ();
1181
1182 #undef FAIL
1183
1184 fail:
1185 if (string_ref)
1186 CFRelease (string_ref);
1187 if (line)
1188 CFRelease (line);
1189
1190 for (unsigned int i = 0; i < range_records.length; i++)
1191 if (range_records[i].font)
1192 CFRelease (range_records[i].font);
1193
1194 return ret;
1195 }
1196
1197
1198 #endif