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ftmac.c

Last change on this file was 2, checked in by jglee, 11 years ago
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1	/***************************************************************************/
2	/* */
3	/* ftmac.c */
4	/* */
5	/* Mac FOND support. Written by just@letterror.com. */
6	/* Heavily modified by mpsuzuki, George Williams, and Sean McBride. */
7	/* */
8	/* This file is for Mac OS X only; see builds/mac/ftoldmac.c for */
9	/* classic platforms built by MPW. */
10	/* */
11	/* Copyright 1996-2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, */
12	/* 2009 by */
13	/* Just van Rossum, David Turner, Robert Wilhelm, and Werner Lemberg. */
14	/* */
15	/* This file is part of the FreeType project, and may only be used, */
16	/* modified, and distributed under the terms of the FreeType project */
17	/* license, LICENSE.TXT. By continuing to use, modify, or distribute */
18	/* this file you indicate that you have read the license and */
19	/* understand and accept it fully. */
20	/* */
21	/***************************************************************************/
22
23
24	/*
25	Notes
26
27	Mac suitcase files can (and often do!) contain multiple fonts. To
28	support this I use the face_index argument of FT_(Open\|New)_Face()
29	functions, and pretend the suitcase file is a collection.
30
31	Warning: fbit and NFNT bitmap resources are not supported yet. In old
32	sfnt fonts, bitmap glyph data for each size is stored in each `NFNT'
33	resources instead of the `bdat' table in the sfnt resource. Therefore,
34	face->num_fixed_sizes is set to 0, because bitmap data in `NFNT'
35	resource is unavailable at present.
36
37	The Mac FOND support works roughly like this:
38
39	- Check whether the offered stream points to a Mac suitcase file. This
40	is done by checking the file type: it has to be 'FFIL' or 'tfil'. The
41	stream that gets passed to our init_face() routine is a stdio stream,
42	which isn't usable for us, since the FOND resources live in the
43	resource fork. So we just grab the stream->pathname field.
44
45	- Read the FOND resource into memory, then check whether there is a
46	TrueType font and/or(!) a Type 1 font available.
47
48	- If there is a Type 1 font available (as a separate `LWFN' file), read
49	its data into memory, massage it slightly so it becomes PFB data, wrap
50	it into a memory stream, load the Type 1 driver and delegate the rest
51	of the work to it by calling FT_Open_Face(). (XXX TODO: after this
52	has been done, the kerning data from the FOND resource should be
53	appended to the face: On the Mac there are usually no AFM files
54	available. However, this is tricky since we need to map Mac char
55	codes to ps glyph names to glyph ID's...)
56
57	- If there is a TrueType font (an `sfnt' resource), read it into memory,
58	wrap it into a memory stream, load the TrueType driver and delegate
59	the rest of the work to it, by calling FT_Open_Face().
60
61	- Some suitcase fonts (notably Onyx) might point the `LWFN' file to
62	itself, even though it doesn't contains `POST' resources. To handle
63	this special case without opening the file an extra time, we just
64	ignore errors from the `LWFN' and fallback to the `sfnt' if both are
65	available.
66	*/
67
68
69	#include <ft2build.h>
70	#include FT_FREETYPE_H
71	#include FT_TRUETYPE_TAGS_H
72	#include FT_INTERNAL_STREAM_H
73	#include "ftbase.h"
74
75	/* This is for Mac OS X. Without redefinition, OS_INLINE */
76	/* expands to `static inline' which doesn't survive the */
77	/* -ansi compilation flag of GCC. */
78	#if !HAVE_ANSI_OS_INLINE
79	#undef OS_INLINE
80	#define OS_INLINE static __inline__
81	#endif
82
83	/* `configure' checks the availability of `ResourceIndex' strictly */
84	/* and sets HAVE_TYPE_RESOURCE_INDEX 1 or 0 always. If it is */
85	/* not set (e.g., a build without `configure'), the availability */
86	/* is guessed from the SDK version. */
87	#ifndef HAVE_TYPE_RESOURCE_INDEX
88	#if !defined( MAC_OS_X_VERSION_10_5 ) \|\| \
89	( MAC_OS_X_VERSION_MAX_ALLOWED < MAC_OS_X_VERSION_10_5 )
90	#define HAVE_TYPE_RESOURCE_INDEX 0
91	#else
92	#define HAVE_TYPE_RESOURCE_INDEX 1
93	#endif
94	#endif /* !HAVE_TYPE_RESOURCE_INDEX */
95
96	#if ( HAVE_TYPE_RESOURCE_INDEX == 0 )
97	typedef short ResourceIndex;
98	#endif
99
100	#include <CoreServices/CoreServices.h>
101	#include <ApplicationServices/ApplicationServices.h>
102	#include <sys/syslimits.h> /* PATH_MAX */
103
104	/* Don't want warnings about our own use of deprecated functions. */
105	#define FT_DEPRECATED_ATTRIBUTE
106
107	#include FT_MAC_H
108
109	#ifndef kATSOptionFlagsUnRestrictedScope /* since Mac OS X 10.1 */
110	#define kATSOptionFlagsUnRestrictedScope kATSOptionFlagsDefault
111	#endif
112
113
114	/* Set PREFER_LWFN to 1 if LWFN (Type 1) is preferred over
115	TrueType in case both are available (this is not common,
116	but it is possible). */
117	#ifndef PREFER_LWFN
118	#define PREFER_LWFN 1
119	#endif
120
121
122	/* This function is deprecated because FSSpec is deprecated in Mac OS X */
123	FT_EXPORT_DEF( FT_Error )
124	FT_GetFile_From_Mac_Name( const char* fontName,
125	FSSpec* pathSpec,
126	FT_Long* face_index )
127	{
128	FT_UNUSED( fontName );
129	FT_UNUSED( pathSpec );
130	FT_UNUSED( face_index );
131
132	return FT_Err_Unimplemented_Feature;
133	}
134
135
136	/* Private function. */
137	/* The FSSpec type has been discouraged for a long time, */
138	/* unfortunately an FSRef replacement API for */
139	/* ATSFontGetFileSpecification() is only available in */
140	/* Mac OS X 10.5 and later. */
141	static OSStatus
142	FT_ATSFontGetFileReference( ATSFontRef ats_font_id,
143	FSRef* ats_font_ref )
144	{
145	#if defined( MAC_OS_X_VERSION_10_5 ) && \
146	( MAC_OS_X_VERSION_MIN_REQUIRED >= MAC_OS_X_VERSION_10_5 )
147
148	OSStatus err;
149
150	err = ATSFontGetFileReference( ats_font_id, ats_font_ref );
151
152	return err;
153	#elif __LP64__ /* No 64bit Carbon API on legacy platforms */
154	FT_UNUSED( ats_font_id );
155	FT_UNUSED( ats_font_ref );
156
157
158	return fnfErr;
159	#else /* 32bit Carbon API on legacy platforms */
160	OSStatus err;
161	FSSpec spec;
162
163
164	err = ATSFontGetFileSpecification( ats_font_id, &spec );
165	if ( noErr == err )
166	err = FSpMakeFSRef( &spec, ats_font_ref );
167
168	return err;
169	#endif
170	}
171
172
173	static FT_Error
174	FT_GetFileRef_From_Mac_ATS_Name( const char* fontName,
175	FSRef* ats_font_ref,
176	FT_Long* face_index )
177	{
178	CFStringRef cf_fontName;
179	ATSFontRef ats_font_id;
180
181
182	*face_index = 0;
183
184	cf_fontName = CFStringCreateWithCString( NULL, fontName,
185	kCFStringEncodingMacRoman );
186	ats_font_id = ATSFontFindFromName( cf_fontName,
187	kATSOptionFlagsUnRestrictedScope );
188	CFRelease( cf_fontName );
189
190	if ( ats_font_id == 0 \|\| ats_font_id == 0xFFFFFFFFUL )
191	return FT_Err_Unknown_File_Format;
192
193	if ( noErr != FT_ATSFontGetFileReference( ats_font_id, ats_font_ref ) )
194	return FT_Err_Unknown_File_Format;
195
196	/* face_index calculation by searching preceding fontIDs */
197	/* with same FSRef */
198	{
199	ATSFontRef id2 = ats_font_id - 1;
200	FSRef ref2;
201
202
203	while ( id2 > 0 )
204	{
205	if ( noErr != FT_ATSFontGetFileReference( id2, &ref2 ) )
206	break;
207	if ( noErr != FSCompareFSRefs( ats_font_ref, &ref2 ) )
208	break;
209
210	id2 --;
211	}
212	*face_index = ats_font_id - ( id2 + 1 );
213	}
214
215	return FT_Err_Ok;
216	}
217
218
219	FT_EXPORT_DEF( FT_Error )
220	FT_GetFilePath_From_Mac_ATS_Name( const char* fontName,
221	UInt8* path,
222	UInt32 maxPathSize,
223	FT_Long* face_index )
224	{
225	FSRef ref;
226	FT_Error err;
227
228
229	err = FT_GetFileRef_From_Mac_ATS_Name( fontName, &ref, face_index );
230	if ( FT_Err_Ok != err )
231	return err;
232
233	if ( noErr != FSRefMakePath( &ref, path, maxPathSize ) )
234	return FT_Err_Unknown_File_Format;
235
236	return FT_Err_Ok;
237	}
238
239
240	/* This function is deprecated because FSSpec is deprecated in Mac OS X */
241	FT_EXPORT_DEF( FT_Error )
242	FT_GetFile_From_Mac_ATS_Name( const char* fontName,
243	FSSpec* pathSpec,
244	FT_Long* face_index )
245	{
246	#if ( __LP64__ ) \|\| ( defined( MAC_OS_X_VERSION_10_5 ) && \
247	( MAC_OS_X_VERSION_MIN_REQUIRED >= MAC_OS_X_VERSION_10_5 ) )
248	FT_UNUSED( fontName );
249	FT_UNUSED( pathSpec );
250	FT_UNUSED( face_index );
251
252	return FT_Err_Unimplemented_Feature;
253	#else
254	FSRef ref;
255	FT_Error err;
256
257
258	err = FT_GetFileRef_From_Mac_ATS_Name( fontName, &ref, face_index );
259	if ( FT_Err_Ok != err )
260	return err;
261
262	if ( noErr != FSGetCatalogInfo( &ref, kFSCatInfoNone, NULL, NULL,
263	pathSpec, NULL ) )
264	return FT_Err_Unknown_File_Format;
265
266	return FT_Err_Ok;
267	#endif
268	}
269
270
271	static OSErr
272	FT_FSPathMakeRes( const UInt8* pathname,
273	ResFileRefNum* res )
274	{
275	OSErr err;
276	FSRef ref;
277
278
279	if ( noErr != FSPathMakeRef( pathname, &ref, FALSE ) )
280	return FT_Err_Cannot_Open_Resource;
281
282	/* at present, no support for dfont format */
283	err = FSOpenResourceFile( &ref, 0, NULL, fsRdPerm, res );
284	if ( noErr == err )
285	return err;
286
287	/* fallback to original resource-fork font */
288	*res = FSOpenResFile( &ref, fsRdPerm );
289	err = ResError();
290
291	return err;
292	}
293
294
295	/* Return the file type for given pathname */
296	static OSType
297	get_file_type_from_path( const UInt8* pathname )
298	{
299	FSRef ref;
300	FSCatalogInfo info;
301
302
303	if ( noErr != FSPathMakeRef( pathname, &ref, FALSE ) )
304	return ( OSType ) 0;
305
306	if ( noErr != FSGetCatalogInfo( &ref, kFSCatInfoFinderInfo, &info,
307	NULL, NULL, NULL ) )
308	return ( OSType ) 0;
309
310	return ((FInfo *)(info.finderInfo))->fdType;
311	}
312
313
314	/* Given a PostScript font name, create the Macintosh LWFN file name. */
315	static void
316	create_lwfn_name( char* ps_name,
317	Str255 lwfn_file_name )
318	{
319	int max = 5, count = 0;
320	FT_Byte* p = lwfn_file_name;
321	FT_Byte* q = (FT_Byte*)ps_name;
322
323
324	lwfn_file_name[0] = 0;
325
326	while ( *q )
327	{
328	if ( ft_isupper( *q ) )
329	{
330	if ( count )
331	max = 3;
332	count = 0;
333	}
334	if ( count < max && ( ft_isalnum( q ) \|\| q == '_' ) )
335	{
336	++p = q;
337	lwfn_file_name[0]++;
338	count++;
339	}
340	q++;
341	}
342	}
343
344
345	static short
346	count_faces_sfnt( char* fond_data )
347	{
348	/* The count is 1 greater than the value in the FOND. */
349	/* Isn't that cute? :-) */
350
351	return EndianS16_BtoN( ( (short)( fond_data +
352	sizeof ( FamRec ) ) ) ) + 1;
353	}
354
355
356	static short
357	count_faces_scalable( char* fond_data )
358	{
359	AsscEntry* assoc;
360	FamRec* fond;
361	short i, face, face_all;
362
363
364	fond = (FamRec*)fond_data;
365	face_all = EndianS16_BtoN( ( (short )( fond_data +
366	sizeof ( FamRec ) ) ) ) + 1;
367	assoc = (AsscEntry*)( fond_data + sizeof ( FamRec ) + 2 );
368	face = 0;
369
370	for ( i = 0; i < face_all; i++ )
371	{
372	if ( 0 == EndianS16_BtoN( assoc[i].fontSize ) )
373	face++;
374	}
375	return face;
376	}
377
378
379	/* Look inside the FOND data, answer whether there should be an SFNT
380	resource, and answer the name of a possible LWFN Type 1 file.
381
382	Thanks to Paul Miller (paulm@profoundeffects.com) for the fix
383	to load a face OTHER than the first one in the FOND!
384	*/
385
386
387	static void
388	parse_fond( char* fond_data,
389	short* have_sfnt,
390	ResID* sfnt_id,
391	Str255 lwfn_file_name,
392	short face_index )
393	{
394	AsscEntry* assoc;
395	AsscEntry* base_assoc;
396	FamRec* fond;
397
398
399	*sfnt_id = 0;
400	*have_sfnt = 0;
401	lwfn_file_name[0] = 0;
402
403	fond = (FamRec*)fond_data;
404	assoc = (AsscEntry*)( fond_data + sizeof ( FamRec ) + 2 );
405	base_assoc = assoc;
406
407	/* the maximum faces in a FOND is 48, size of StyleTable.indexes[] */
408	if ( 47 < face_index )
409	return;
410
411	/* Let's do a little range checking before we get too excited here */
412	if ( face_index < count_faces_sfnt( fond_data ) )
413	{
414	assoc += face_index; /* add on the face_index! */
415
416	/* if the face at this index is not scalable,
417	fall back to the first one (old behavior) */
418	if ( EndianS16_BtoN( assoc->fontSize ) == 0 )
419	{
420	*have_sfnt = 1;
421	*sfnt_id = EndianS16_BtoN( assoc->fontID );
422	}
423	else if ( base_assoc->fontSize == 0 )
424	{
425	*have_sfnt = 1;
426	*sfnt_id = EndianS16_BtoN( base_assoc->fontID );
427	}
428	}
429
430	if ( EndianS32_BtoN( fond->ffStylOff ) )
431	{
432	unsigned char* p = (unsigned char*)fond_data;
433	StyleTable* style;
434	unsigned short string_count;
435	char ps_name[256];
436	unsigned char* names[64];
437	int i;
438
439
440	p += EndianS32_BtoN( fond->ffStylOff );
441	style = (StyleTable*)p;
442	p += sizeof ( StyleTable );
443	string_count = EndianS16_BtoN( (short)(p) );
444	p += sizeof ( short );
445
446	for ( i = 0; i < string_count && i < 64; i++ )
447	{
448	names[i] = p;
449	p += names[i][0];
450	p++;
451	}
452
453	{
454	size_t ps_name_len = (size_t)names[0][0];
455
456
457	if ( ps_name_len != 0 )
458	{
459	ft_memcpy(ps_name, names[0] + 1, ps_name_len);
460	ps_name[ps_name_len] = 0;
461	}
462	if ( style->indexes[face_index] > 1 &&
463	style->indexes[face_index] <= FT_MIN( string_count, 64 ) )
464	{
465	unsigned char* suffixes = names[style->indexes[face_index] - 1];
466
467
468	for ( i = 1; i <= suffixes[0]; i++ )
469	{
470	unsigned char* s;
471	size_t j = suffixes[i] - 1;
472
473
474	if ( j < string_count && ( s = names[j] ) != NULL )
475	{
476	size_t s_len = (size_t)s[0];
477
478
479	if ( s_len != 0 && ps_name_len + s_len < sizeof ( ps_name ) )
480	{
481	ft_memcpy( ps_name + ps_name_len, s + 1, s_len );
482	ps_name_len += s_len;
483	ps_name[ps_name_len] = 0;
484	}
485	}
486	}
487	}
488	}
489
490	create_lwfn_name( ps_name, lwfn_file_name );
491	}
492	}
493
494
495	static FT_Error
496	lookup_lwfn_by_fond( const UInt8* path_fond,
497	ConstStr255Param base_lwfn,
498	UInt8* path_lwfn,
499	size_t path_size )
500	{
501	FSRef ref, par_ref;
502	size_t dirname_len;
503
504
505	/* Pathname for FSRef can be in various formats: HFS, HFS+, and POSIX. */
506	/* We should not extract parent directory by string manipulation. */
507
508	if ( noErr != FSPathMakeRef( path_fond, &ref, FALSE ) )
509	return FT_Err_Invalid_Argument;
510
511	if ( noErr != FSGetCatalogInfo( &ref, kFSCatInfoNone,
512	NULL, NULL, NULL, &par_ref ) )
513	return FT_Err_Invalid_Argument;
514
515	if ( noErr != FSRefMakePath( &par_ref, path_lwfn, path_size ) )
516	return FT_Err_Invalid_Argument;
517
518	if ( ft_strlen( (char *)path_lwfn ) + 1 + base_lwfn[0] > path_size )
519	return FT_Err_Invalid_Argument;
520
521	/* now we have absolute dirname in path_lwfn */
522	ft_strcat( (char *)path_lwfn, "/" );
523	dirname_len = ft_strlen( (char *)path_lwfn );
524	ft_strcat( (char )path_lwfn, (char )base_lwfn + 1 );
525	path_lwfn[dirname_len + base_lwfn[0]] = '\0';
526
527	if ( noErr != FSPathMakeRef( path_lwfn, &ref, FALSE ) )
528	return FT_Err_Cannot_Open_Resource;
529
530	if ( noErr != FSGetCatalogInfo( &ref, kFSCatInfoNone,
531	NULL, NULL, NULL, NULL ) )
532	return FT_Err_Cannot_Open_Resource;
533
534	return FT_Err_Ok;
535	}
536
537
538	static short
539	count_faces( Handle fond,
540	const UInt8* pathname )
541	{
542	ResID sfnt_id;
543	short have_sfnt, have_lwfn;
544	Str255 lwfn_file_name;
545	UInt8 buff[PATH_MAX];
546	FT_Error err;
547	short num_faces;
548
549
550	have_sfnt = have_lwfn = 0;
551
552	parse_fond( *fond, &have_sfnt, &sfnt_id, lwfn_file_name, 0 );
553
554	if ( lwfn_file_name[0] )
555	{
556	err = lookup_lwfn_by_fond( pathname, lwfn_file_name,
557	buff, sizeof ( buff ) );
558	if ( FT_Err_Ok == err )
559	have_lwfn = 1;
560	}
561
562	if ( have_lwfn && ( !have_sfnt \|\| PREFER_LWFN ) )
563	num_faces = 1;
564	else
565	num_faces = count_faces_scalable( *fond );
566
567	return num_faces;
568	}
569
570
571	/* Read Type 1 data from the POST resources inside the LWFN file,
572	return a PFB buffer. This is somewhat convoluted because the FT2
573	PFB parser wants the ASCII header as one chunk, and the LWFN
574	chunks are often not organized that way, so we glue chunks
575	of the same type together. */
576	static FT_Error
577	read_lwfn( FT_Memory memory,
578	ResFileRefNum res,
579	FT_Byte** pfb_data,
580	FT_ULong* size )
581	{
582	FT_Error error = FT_Err_Ok;
583	ResID res_id;
584	unsigned char buffer, p, *size_p = NULL;
585	FT_ULong total_size = 0;
586	FT_ULong old_total_size = 0;
587	FT_ULong post_size, pfb_chunk_size;
588	Handle post_data;
589	char code, last_code;
590
591
592	UseResFile( res );
593
594	/* First pass: load all POST resources, and determine the size of */
595	/* the output buffer. */
596	res_id = 501;
597	last_code = -1;
598
599	for (;;)
600	{
601	post_data = Get1Resource( TTAG_POST, res_id++ );
602	if ( post_data == NULL )
603	break; /* we are done */
604
605	code = (*post_data)[0];
606
607	if ( code != last_code )
608	{
609	if ( code == 5 )
610	total_size += 2; /* just the end code */
611	else
612	total_size += 6; /* code + 4 bytes chunk length */
613	}
614
615	total_size += GetHandleSize( post_data ) - 2;
616	last_code = code;
617
618	/* detect integer overflows */
619	if ( total_size < old_total_size )
620	{
621	error = FT_Err_Array_Too_Large;
622	goto Error;
623	}
624
625	old_total_size = total_size;
626	}
627
628	if ( FT_ALLOC( buffer, (FT_Long)total_size ) )
629	goto Error;
630
631	/* Second pass: append all POST data to the buffer, add PFB fields. */
632	/* Glue all consecutive chunks of the same type together. */
633	p = buffer;
634	res_id = 501;
635	last_code = -1;
636	pfb_chunk_size = 0;
637
638	for (;;)
639	{
640	post_data = Get1Resource( TTAG_POST, res_id++ );
641	if ( post_data == NULL )
642	break; /* we are done */
643
644	post_size = (FT_ULong)GetHandleSize( post_data ) - 2;
645	code = (*post_data)[0];
646
647	if ( code != last_code )
648	{
649	if ( last_code != -1 )
650	{
651	/* we are done adding a chunk, fill in the size field */
652	if ( size_p != NULL )
653	{
654	*size_p++ = (FT_Byte)( pfb_chunk_size & 0xFF );
655	*size_p++ = (FT_Byte)( ( pfb_chunk_size >> 8 ) & 0xFF );
656	*size_p++ = (FT_Byte)( ( pfb_chunk_size >> 16 ) & 0xFF );
657	*size_p++ = (FT_Byte)( ( pfb_chunk_size >> 24 ) & 0xFF );
658	}
659	pfb_chunk_size = 0;
660	}
661
662	*p++ = 0x80;
663	if ( code == 5 )
664	p++ = 0x03; / the end */
665	else if ( code == 2 )
666	p++ = 0x02; / binary segment */
667	else
668	p++ = 0x01; / ASCII segment */
669
670	if ( code != 5 )
671	{
672	size_p = p; /* save for later */
673	p += 4; /* make space for size field */
674	}
675	}
676
677	ft_memcpy( p, *post_data + 2, post_size );
678	pfb_chunk_size += post_size;
679	p += post_size;
680	last_code = code;
681	}
682
683	*pfb_data = buffer;
684	*size = total_size;
685
686	Error:
687	CloseResFile( res );
688	return error;
689	}
690
691
692	/* Create a new FT_Face from a file path to an LWFN file. */
693	static FT_Error
694	FT_New_Face_From_LWFN( FT_Library library,
695	const UInt8* pathname,
696	FT_Long face_index,
697	FT_Face* aface )
698	{
699	FT_Byte* pfb_data;
700	FT_ULong pfb_size;
701	FT_Error error;
702	ResFileRefNum res;
703
704
705	if ( noErr != FT_FSPathMakeRes( pathname, &res ) )
706	return FT_Err_Cannot_Open_Resource;
707
708	pfb_data = NULL;
709	pfb_size = 0;
710	error = read_lwfn( library->memory, res, &pfb_data, &pfb_size );
711	CloseResFile( res ); /* PFB is already loaded, useless anymore */
712	if ( error )
713	return error;
714
715	return open_face_from_buffer( library,
716	pfb_data,
717	pfb_size,
718	face_index,
719	"type1",
720	aface );
721	}
722
723
724	/* Create a new FT_Face from an SFNT resource, specified by res ID. */
725	static FT_Error
726	FT_New_Face_From_SFNT( FT_Library library,
727	ResID sfnt_id,
728	FT_Long face_index,
729	FT_Face* aface )
730	{
731	Handle sfnt = NULL;
732	FT_Byte* sfnt_data;
733	size_t sfnt_size;
734	FT_Error error = FT_Err_Ok;
735	FT_Memory memory = library->memory;
736	int is_cff, is_sfnt_ps;
737
738
739	sfnt = GetResource( TTAG_sfnt, sfnt_id );
740	if ( sfnt == NULL )
741	return FT_Err_Invalid_Handle;
742
743	sfnt_size = (FT_ULong)GetHandleSize( sfnt );
744	if ( FT_ALLOC( sfnt_data, (FT_Long)sfnt_size ) )
745	{
746	ReleaseResource( sfnt );
747	return error;
748	}
749
750	ft_memcpy( sfnt_data, *sfnt, sfnt_size );
751	ReleaseResource( sfnt );
752
753	is_cff = sfnt_size > 4 && !ft_memcmp( sfnt_data, "OTTO", 4 );
754	is_sfnt_ps = sfnt_size > 4 && !ft_memcmp( sfnt_data, "typ1", 4 );
755
756	if ( is_sfnt_ps )
757	{
758	FT_Stream stream;
759
760
761	if ( FT_NEW( stream ) )
762	goto Try_OpenType;
763
764	FT_Stream_OpenMemory( stream, sfnt_data, sfnt_size );
765	if ( !open_face_PS_from_sfnt_stream( library,
766	stream,
767	face_index,
768	0, NULL,
769	aface ) )
770	{
771	FT_Stream_Close( stream );
772	FT_FREE( stream );
773	FT_FREE( sfnt_data );
774	goto Exit;
775	}
776
777	FT_FREE( stream );
778	}
779	Try_OpenType:
780	error = open_face_from_buffer( library,
781	sfnt_data,
782	sfnt_size,
783	face_index,
784	is_cff ? "cff" : "truetype",
785	aface );
786	Exit:
787	return error;
788	}
789
790
791	/* Create a new FT_Face from a file path to a suitcase file. */
792	static FT_Error
793	FT_New_Face_From_Suitcase( FT_Library library,
794	const UInt8* pathname,
795	FT_Long face_index,
796	FT_Face* aface )
797	{
798	FT_Error error = FT_Err_Cannot_Open_Resource;
799	ResFileRefNum res_ref;
800	ResourceIndex res_index;
801	Handle fond;
802	short num_faces_in_res, num_faces_in_fond;
803
804
805	if ( noErr != FT_FSPathMakeRes( pathname, &res_ref ) )
806	return FT_Err_Cannot_Open_Resource;
807
808	UseResFile( res_ref );
809	if ( ResError() )
810	return FT_Err_Cannot_Open_Resource;
811
812	num_faces_in_res = 0;
813	for ( res_index = 1; ; ++res_index )
814	{
815	fond = Get1IndResource( TTAG_FOND, res_index );
816	if ( ResError() )
817	break;
818
819	num_faces_in_fond = count_faces( fond, pathname );
820	num_faces_in_res += num_faces_in_fond;
821
822	if ( 0 <= face_index && face_index < num_faces_in_fond && error )
823	error = FT_New_Face_From_FOND( library, fond, face_index, aface );
824
825	face_index -= num_faces_in_fond;
826	}
827
828	CloseResFile( res_ref );
829	if ( FT_Err_Ok == error && NULL != aface && NULL != *aface )
830	(*aface)->num_faces = num_faces_in_res;
831	return error;
832	}
833
834
835	/* documentation is in ftmac.h */
836
837	FT_EXPORT_DEF( FT_Error )
838	FT_New_Face_From_FOND( FT_Library library,
839	Handle fond,
840	FT_Long face_index,
841	FT_Face* aface )
842	{
843	short have_sfnt, have_lwfn = 0;
844	ResID sfnt_id, fond_id;
845	OSType fond_type;
846	Str255 fond_name;
847	Str255 lwfn_file_name;
848	UInt8 path_lwfn[PATH_MAX];
849	OSErr err;
850	FT_Error error = FT_Err_Ok;
851
852
853	GetResInfo( fond, &fond_id, &fond_type, fond_name );
854	if ( ResError() != noErr \|\| fond_type != TTAG_FOND )
855	return FT_Err_Invalid_File_Format;
856
857	parse_fond( *fond, &have_sfnt, &sfnt_id, lwfn_file_name, face_index );
858
859	if ( lwfn_file_name[0] )
860	{
861	ResFileRefNum res;
862
863
864	res = HomeResFile( fond );
865	if ( noErr != ResError() )
866	goto found_no_lwfn_file;
867
868	{
869	UInt8 path_fond[PATH_MAX];
870	FSRef ref;
871
872
873	err = FSGetForkCBInfo( res, kFSInvalidVolumeRefNum,
874	NULL, NULL, NULL, &ref, NULL );
875	if ( noErr != err )
876	goto found_no_lwfn_file;
877
878	err = FSRefMakePath( &ref, path_fond, sizeof ( path_fond ) );
879	if ( noErr != err )
880	goto found_no_lwfn_file;
881
882	error = lookup_lwfn_by_fond( path_fond, lwfn_file_name,
883	path_lwfn, sizeof ( path_lwfn ) );
884	if ( FT_Err_Ok == error )
885	have_lwfn = 1;
886	}
887	}
888
889	if ( have_lwfn && ( !have_sfnt \|\| PREFER_LWFN ) )
890	error = FT_New_Face_From_LWFN( library,
891	path_lwfn,
892	face_index,
893	aface );
894	else
895	error = FT_Err_Unknown_File_Format;
896
897	found_no_lwfn_file:
898	if ( have_sfnt && FT_Err_Ok != error )
899	error = FT_New_Face_From_SFNT( library,
900	sfnt_id,
901	face_index,
902	aface );
903
904	return error;
905	}
906
907
908	/* Common function to load a new FT_Face from a resource file. */
909	static FT_Error
910	FT_New_Face_From_Resource( FT_Library library,
911	const UInt8* pathname,
912	FT_Long face_index,
913	FT_Face* aface )
914	{
915	OSType file_type;
916	FT_Error error;
917
918
919	/* LWFN is a (very) specific file format, check for it explicitly */
920	file_type = get_file_type_from_path( pathname );
921	if ( file_type == TTAG_LWFN )
922	return FT_New_Face_From_LWFN( library, pathname, face_index, aface );
923
924	/* Otherwise the file type doesn't matter (there are more than */
925	/* `FFIL' and `tfil'). Just try opening it as a font suitcase; */
926	/* if it works, fine. */
927
928	error = FT_New_Face_From_Suitcase( library, pathname, face_index, aface );
929	if ( error == 0 )
930	return error;
931
932	/* let it fall through to normal loader (.ttf, .otf, etc.); */
933	/* we signal this by returning no error and no FT_Face */
934	*aface = NULL;
935	return 0;
936	}
937
938
939	/*************************************************************************/
940	/* */
941	/* <Function> */
942	/* FT_New_Face */
943	/* */
944	/* <Description> */
945	/* This is the Mac-specific implementation of FT_New_Face. In */
946	/* addition to the standard FT_New_Face() functionality, it also */
947	/* accepts pathnames to Mac suitcase files. For further */
948	/* documentation see the original FT_New_Face() in freetype.h. */
949	/* */
950	FT_EXPORT_DEF( FT_Error )
951	FT_New_Face( FT_Library library,
952	const char* pathname,
953	FT_Long face_index,
954	FT_Face* aface )
955	{
956	FT_Open_Args args;
957	FT_Error error;
958
959
960	/* test for valid `library' and `aface' delayed to FT_Open_Face() */
961	if ( !pathname )
962	return FT_Err_Invalid_Argument;
963
964	error = FT_Err_Ok;
965	*aface = NULL;
966
967	/* try resourcefork based font: LWFN, FFIL */
968	error = FT_New_Face_From_Resource( library, (UInt8 *)pathname,
969	face_index, aface );
970	if ( error != 0 \|\| *aface != NULL )
971	return error;
972
973	/* let it fall through to normal loader (.ttf, .otf, etc.) */
974	args.flags = FT_OPEN_PATHNAME;
975	args.pathname = (char*)pathname;
976	return FT_Open_Face( library, &args, face_index, aface );
977	}
978
979
980	/*************************************************************************/
981	/* */
982	/* <Function> */
983	/* FT_New_Face_From_FSRef */
984	/* */
985	/* <Description> */
986	/* FT_New_Face_From_FSRef is identical to FT_New_Face except it */
987	/* accepts an FSRef instead of a path. */
988	/* */
989	/* This function is deprecated because Carbon data types (FSRef) */
990	/* are not cross-platform, and thus not suitable for the freetype API. */
991	FT_EXPORT_DEF( FT_Error )
992	FT_New_Face_From_FSRef( FT_Library library,
993	const FSRef* ref,
994	FT_Long face_index,
995	FT_Face* aface )
996	{
997	FT_Error error;
998	FT_Open_Args args;
999	OSErr err;
1000	UInt8 pathname[PATH_MAX];
1001
1002
1003	if ( !ref )
1004	return FT_Err_Invalid_Argument;
1005
1006	err = FSRefMakePath( ref, pathname, sizeof ( pathname ) );
1007	if ( err )
1008	error = FT_Err_Cannot_Open_Resource;
1009
1010	error = FT_New_Face_From_Resource( library, pathname, face_index, aface );
1011	if ( error != 0 \|\| *aface != NULL )
1012	return error;
1013
1014	/* fallback to datafork font */
1015	args.flags = FT_OPEN_PATHNAME;
1016	args.pathname = (char*)pathname;
1017	return FT_Open_Face( library, &args, face_index, aface );
1018	}
1019
1020
1021	/*************************************************************************/
1022	/* */
1023	/* <Function> */
1024	/* FT_New_Face_From_FSSpec */
1025	/* */
1026	/* <Description> */
1027	/* FT_New_Face_From_FSSpec is identical to FT_New_Face except it */
1028	/* accepts an FSSpec instead of a path. */
1029	/* */
1030	/* This function is deprecated because FSSpec is deprecated in Mac OS X */
1031	FT_EXPORT_DEF( FT_Error )
1032	FT_New_Face_From_FSSpec( FT_Library library,
1033	const FSSpec* spec,
1034	FT_Long face_index,
1035	FT_Face* aface )
1036	{
1037	#if ( __LP64__ ) \|\| ( defined( MAC_OS_X_VERSION_10_5 ) && \
1038	( MAC_OS_X_VERSION_MIN_REQUIRED >= MAC_OS_X_VERSION_10_5 ) )
1039	FT_UNUSED( library );
1040	FT_UNUSED( spec );
1041	FT_UNUSED( face_index );
1042	FT_UNUSED( aface );
1043
1044	return FT_Err_Unimplemented_Feature;
1045	#else
1046	FSRef ref;
1047
1048
1049	if ( !spec \|\| FSpMakeFSRef( spec, &ref ) != noErr )
1050	return FT_Err_Invalid_Argument;
1051	else
1052	return FT_New_Face_From_FSRef( library, &ref, face_index, aface );
1053	#endif
1054	}
1055
1056
1057	/* END */

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source: svn/trunk/zasc/freetype-2.3.9/ftmac.c

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