|
5172
|
1 |
/***************************************************************************/
|
|
|
2 |
/* */
|
|
|
3 |
/* ttcmap.c */
|
|
|
4 |
/* */
|
|
|
5 |
/* TrueType character mapping table (cmap) support (body). */
|
|
|
6 |
/* */
|
|
|
7 |
/* Copyright 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 by */
|
|
|
8 |
/* David Turner, Robert Wilhelm, and Werner Lemberg. */
|
|
|
9 |
/* */
|
|
|
10 |
/* This file is part of the FreeType project, and may only be used, */
|
|
|
11 |
/* modified, and distributed under the terms of the FreeType project */
|
|
|
12 |
/* license, LICENSE.TXT. By continuing to use, modify, or distribute */
|
|
|
13 |
/* this file you indicate that you have read the license and */
|
|
|
14 |
/* understand and accept it fully. */
|
|
|
15 |
/* */
|
|
|
16 |
/***************************************************************************/
|
|
|
17 |
|
|
|
18 |
|
|
|
19 |
#include <ft2build.h>
|
|
|
20 |
#include FT_INTERNAL_DEBUG_H
|
|
|
21 |
|
|
|
22 |
#include "sferrors.h" /* must come before FT_INTERNAL_VALIDATE_H */
|
|
|
23 |
|
|
|
24 |
#include FT_INTERNAL_VALIDATE_H
|
|
|
25 |
#include FT_INTERNAL_STREAM_H
|
|
|
26 |
#include "ttload.h"
|
|
|
27 |
#include "ttcmap.h"
|
|
|
28 |
#include "sfntpic.h"
|
|
|
29 |
|
|
|
30 |
|
|
|
31 |
/*************************************************************************/
|
|
|
32 |
/* */
|
|
|
33 |
/* The macro FT_COMPONENT is used in trace mode. It is an implicit */
|
|
|
34 |
/* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */
|
|
|
35 |
/* messages during execution. */
|
|
|
36 |
/* */
|
|
|
37 |
#undef FT_COMPONENT
|
|
|
38 |
#define FT_COMPONENT trace_ttcmap
|
|
|
39 |
|
|
|
40 |
|
|
|
41 |
#define TT_PEEK_SHORT FT_PEEK_SHORT
|
|
|
42 |
#define TT_PEEK_USHORT FT_PEEK_USHORT
|
|
|
43 |
#define TT_PEEK_UINT24 FT_PEEK_UOFF3
|
|
|
44 |
#define TT_PEEK_LONG FT_PEEK_LONG
|
|
|
45 |
#define TT_PEEK_ULONG FT_PEEK_ULONG
|
|
|
46 |
|
|
|
47 |
#define TT_NEXT_SHORT FT_NEXT_SHORT
|
|
|
48 |
#define TT_NEXT_USHORT FT_NEXT_USHORT
|
|
|
49 |
#define TT_NEXT_UINT24 FT_NEXT_UOFF3
|
|
|
50 |
#define TT_NEXT_LONG FT_NEXT_LONG
|
|
|
51 |
#define TT_NEXT_ULONG FT_NEXT_ULONG
|
|
|
52 |
|
|
|
53 |
|
|
|
54 |
FT_CALLBACK_DEF( FT_Error )
|
|
|
55 |
tt_cmap_init( TT_CMap cmap,
|
|
|
56 |
FT_Byte* table )
|
|
|
57 |
{
|
|
|
58 |
cmap->data = table;
|
|
|
59 |
return SFNT_Err_Ok;
|
|
|
60 |
}
|
|
|
61 |
|
|
|
62 |
|
|
|
63 |
/*************************************************************************/
|
|
|
64 |
/*************************************************************************/
|
|
|
65 |
/***** *****/
|
|
|
66 |
/***** FORMAT 0 *****/
|
|
|
67 |
/***** *****/
|
|
|
68 |
/*************************************************************************/
|
|
|
69 |
/*************************************************************************/
|
|
|
70 |
|
|
|
71 |
/*************************************************************************/
|
|
|
72 |
/* */
|
|
|
73 |
/* TABLE OVERVIEW */
|
|
|
74 |
/* -------------- */
|
|
|
75 |
/* */
|
|
|
76 |
/* NAME OFFSET TYPE DESCRIPTION */
|
|
|
77 |
/* */
|
|
|
78 |
/* format 0 USHORT must be 0 */
|
|
|
79 |
/* length 2 USHORT table length in bytes */
|
|
|
80 |
/* language 4 USHORT Mac language code */
|
|
|
81 |
/* glyph_ids 6 BYTE[256] array of glyph indices */
|
|
|
82 |
/* 262 */
|
|
|
83 |
/* */
|
|
|
84 |
|
|
|
85 |
#ifdef TT_CONFIG_CMAP_FORMAT_0
|
|
|
86 |
|
|
|
87 |
FT_CALLBACK_DEF( FT_Error )
|
|
|
88 |
tt_cmap0_validate( FT_Byte* table,
|
|
|
89 |
FT_Validator valid )
|
|
|
90 |
{
|
|
|
91 |
FT_Byte* p = table + 2;
|
|
|
92 |
FT_UInt length = TT_NEXT_USHORT( p );
|
|
|
93 |
|
|
|
94 |
|
|
|
95 |
if ( table + length > valid->limit || length < 262 )
|
|
|
96 |
FT_INVALID_TOO_SHORT;
|
|
|
97 |
|
|
|
98 |
/* check glyph indices whenever necessary */
|
|
|
99 |
if ( valid->level >= FT_VALIDATE_TIGHT )
|
|
|
100 |
{
|
|
|
101 |
FT_UInt n, idx;
|
|
|
102 |
|
|
|
103 |
|
|
|
104 |
p = table + 6;
|
|
|
105 |
for ( n = 0; n < 256; n++ )
|
|
|
106 |
{
|
|
|
107 |
idx = *p++;
|
|
|
108 |
if ( idx >= TT_VALID_GLYPH_COUNT( valid ) )
|
|
|
109 |
FT_INVALID_GLYPH_ID;
|
|
|
110 |
}
|
|
|
111 |
}
|
|
|
112 |
|
|
|
113 |
return SFNT_Err_Ok;
|
|
|
114 |
}
|
|
|
115 |
|
|
|
116 |
|
|
|
117 |
FT_CALLBACK_DEF( FT_UInt )
|
|
|
118 |
tt_cmap0_char_index( TT_CMap cmap,
|
|
|
119 |
FT_UInt32 char_code )
|
|
|
120 |
{
|
|
|
121 |
FT_Byte* table = cmap->data;
|
|
|
122 |
|
|
|
123 |
|
|
|
124 |
return char_code < 256 ? table[6 + char_code] : 0;
|
|
|
125 |
}
|
|
|
126 |
|
|
|
127 |
|
|
|
128 |
FT_CALLBACK_DEF( FT_UInt32 )
|
|
|
129 |
tt_cmap0_char_next( TT_CMap cmap,
|
|
|
130 |
FT_UInt32 *pchar_code )
|
|
|
131 |
{
|
|
|
132 |
FT_Byte* table = cmap->data;
|
|
|
133 |
FT_UInt32 charcode = *pchar_code;
|
|
|
134 |
FT_UInt32 result = 0;
|
|
|
135 |
FT_UInt gindex = 0;
|
|
|
136 |
|
|
|
137 |
|
|
|
138 |
table += 6; /* go to glyph IDs */
|
|
|
139 |
while ( ++charcode < 256 )
|
|
|
140 |
{
|
|
|
141 |
gindex = table[charcode];
|
|
|
142 |
if ( gindex != 0 )
|
|
|
143 |
{
|
|
|
144 |
result = charcode;
|
|
|
145 |
break;
|
|
|
146 |
}
|
|
|
147 |
}
|
|
|
148 |
|
|
|
149 |
*pchar_code = result;
|
|
|
150 |
return gindex;
|
|
|
151 |
}
|
|
|
152 |
|
|
|
153 |
|
|
|
154 |
FT_CALLBACK_DEF( FT_Error )
|
|
|
155 |
tt_cmap0_get_info( TT_CMap cmap,
|
|
|
156 |
TT_CMapInfo *cmap_info )
|
|
|
157 |
{
|
|
|
158 |
FT_Byte* p = cmap->data + 4;
|
|
|
159 |
|
|
|
160 |
|
|
|
161 |
cmap_info->format = 0;
|
|
|
162 |
cmap_info->language = (FT_ULong)TT_PEEK_USHORT( p );
|
|
|
163 |
|
|
|
164 |
return SFNT_Err_Ok;
|
|
|
165 |
}
|
|
|
166 |
|
|
|
167 |
|
|
|
168 |
FT_DEFINE_TT_CMAP(tt_cmap0_class_rec,
|
|
|
169 |
sizeof ( TT_CMapRec ),
|
|
|
170 |
|
|
|
171 |
(FT_CMap_InitFunc) tt_cmap_init,
|
|
|
172 |
(FT_CMap_DoneFunc) NULL,
|
|
|
173 |
(FT_CMap_CharIndexFunc)tt_cmap0_char_index,
|
|
|
174 |
(FT_CMap_CharNextFunc) tt_cmap0_char_next,
|
|
|
175 |
|
|
|
176 |
NULL, NULL, NULL, NULL, NULL
|
|
|
177 |
,
|
|
|
178 |
0,
|
|
|
179 |
(TT_CMap_ValidateFunc) tt_cmap0_validate,
|
|
|
180 |
(TT_CMap_Info_GetFunc) tt_cmap0_get_info
|
|
|
181 |
)
|
|
|
182 |
|
|
|
183 |
#endif /* TT_CONFIG_CMAP_FORMAT_0 */
|
|
|
184 |
|
|
|
185 |
|
|
|
186 |
/*************************************************************************/
|
|
|
187 |
/*************************************************************************/
|
|
|
188 |
/***** *****/
|
|
|
189 |
/***** FORMAT 2 *****/
|
|
|
190 |
/***** *****/
|
|
|
191 |
/***** This is used for certain CJK encodings that encode text in a *****/
|
|
|
192 |
/***** mixed 8/16 bits encoding along the following lines: *****/
|
|
|
193 |
/***** *****/
|
|
|
194 |
/***** * Certain byte values correspond to an 8-bit character code *****/
|
|
|
195 |
/***** (typically in the range 0..127 for ASCII compatibility). *****/
|
|
|
196 |
/***** *****/
|
|
|
197 |
/***** * Certain byte values signal the first byte of a 2-byte *****/
|
|
|
198 |
/***** character code (but these values are also valid as the *****/
|
|
|
199 |
/***** second byte of a 2-byte character). *****/
|
|
|
200 |
/***** *****/
|
|
|
201 |
/***** The following charmap lookup and iteration functions all *****/
|
|
|
202 |
/***** assume that the value "charcode" correspond to following: *****/
|
|
|
203 |
/***** *****/
|
|
|
204 |
/***** - For one byte characters, "charcode" is simply the *****/
|
|
|
205 |
/***** character code. *****/
|
|
|
206 |
/***** *****/
|
|
|
207 |
/***** - For two byte characters, "charcode" is the 2-byte *****/
|
|
|
208 |
/***** character code in big endian format. More exactly: *****/
|
|
|
209 |
/***** *****/
|
|
|
210 |
/***** (charcode >> 8) is the first byte value *****/
|
|
|
211 |
/***** (charcode & 0xFF) is the second byte value *****/
|
|
|
212 |
/***** *****/
|
|
|
213 |
/***** Note that not all values of "charcode" are valid according *****/
|
|
|
214 |
/***** to these rules, and the function moderately check the *****/
|
|
|
215 |
/***** arguments. *****/
|
|
|
216 |
/***** *****/
|
|
|
217 |
/*************************************************************************/
|
|
|
218 |
/*************************************************************************/
|
|
|
219 |
|
|
|
220 |
/*************************************************************************/
|
|
|
221 |
/* */
|
|
|
222 |
/* TABLE OVERVIEW */
|
|
|
223 |
/* -------------- */
|
|
|
224 |
/* */
|
|
|
225 |
/* NAME OFFSET TYPE DESCRIPTION */
|
|
|
226 |
/* */
|
|
|
227 |
/* format 0 USHORT must be 2 */
|
|
|
228 |
/* length 2 USHORT table length in bytes */
|
|
|
229 |
/* language 4 USHORT Mac language code */
|
|
|
230 |
/* keys 6 USHORT[256] sub-header keys */
|
|
|
231 |
/* subs 518 SUBHEAD[NSUBS] sub-headers array */
|
|
|
232 |
/* glyph_ids 518+NSUB*8 USHORT[] glyph ID array */
|
|
|
233 |
/* */
|
|
|
234 |
/* The `keys' table is used to map charcode high-bytes to sub-headers. */
|
|
|
235 |
/* The value of `NSUBS' is the number of sub-headers defined in the */
|
|
|
236 |
/* table and is computed by finding the maximum of the `keys' table. */
|
|
|
237 |
/* */
|
|
|
238 |
/* Note that for any n, `keys[n]' is a byte offset within the `subs' */
|
|
|
239 |
/* table, i.e., it is the corresponding sub-header index multiplied */
|
|
|
240 |
/* by 8. */
|
|
|
241 |
/* */
|
|
|
242 |
/* Each sub-header has the following format: */
|
|
|
243 |
/* */
|
|
|
244 |
/* NAME OFFSET TYPE DESCRIPTION */
|
|
|
245 |
/* */
|
|
|
246 |
/* first 0 USHORT first valid low-byte */
|
|
|
247 |
/* count 2 USHORT number of valid low-bytes */
|
|
|
248 |
/* delta 4 SHORT see below */
|
|
|
249 |
/* offset 6 USHORT see below */
|
|
|
250 |
/* */
|
|
|
251 |
/* A sub-header defines, for each high-byte, the range of valid */
|
|
|
252 |
/* low-bytes within the charmap. Note that the range defined by `first' */
|
|
|
253 |
/* and `count' must be completely included in the interval [0..255] */
|
|
|
254 |
/* according to the specification. */
|
|
|
255 |
/* */
|
|
|
256 |
/* If a character code is contained within a given sub-header, then */
|
|
|
257 |
/* mapping it to a glyph index is done as follows: */
|
|
|
258 |
/* */
|
|
|
259 |
/* * The value of `offset' is read. This is a _byte_ distance from the */
|
|
|
260 |
/* location of the `offset' field itself into a slice of the */
|
|
|
261 |
/* `glyph_ids' table. Let's call it `slice' (it is a USHORT[] too). */
|
|
|
262 |
/* */
|
|
|
263 |
/* * The value `slice[char.lo - first]' is read. If it is 0, there is */
|
|
|
264 |
/* no glyph for the charcode. Otherwise, the value of `delta' is */
|
|
|
265 |
/* added to it (modulo 65536) to form a new glyph index. */
|
|
|
266 |
/* */
|
|
|
267 |
/* It is up to the validation routine to check that all offsets fall */
|
|
|
268 |
/* within the glyph IDs table (and not within the `subs' table itself or */
|
|
|
269 |
/* outside of the CMap). */
|
|
|
270 |
/* */
|
|
|
271 |
|
|
|
272 |
#ifdef TT_CONFIG_CMAP_FORMAT_2
|
|
|
273 |
|
|
|
274 |
FT_CALLBACK_DEF( FT_Error )
|
|
|
275 |
tt_cmap2_validate( FT_Byte* table,
|
|
|
276 |
FT_Validator valid )
|
|
|
277 |
{
|
|
|
278 |
FT_Byte* p = table + 2; /* skip format */
|
|
|
279 |
FT_UInt length = TT_PEEK_USHORT( p );
|
|
|
280 |
FT_UInt n, max_subs;
|
|
|
281 |
FT_Byte* keys; /* keys table */
|
|
|
282 |
FT_Byte* subs; /* sub-headers */
|
|
|
283 |
FT_Byte* glyph_ids; /* glyph ID array */
|
|
|
284 |
|
|
|
285 |
|
|
|
286 |
if ( table + length > valid->limit || length < 6 + 512 )
|
|
|
287 |
FT_INVALID_TOO_SHORT;
|
|
|
288 |
|
|
|
289 |
keys = table + 6;
|
|
|
290 |
|
|
|
291 |
/* parse keys to compute sub-headers count */
|
|
|
292 |
p = keys;
|
|
|
293 |
max_subs = 0;
|
|
|
294 |
for ( n = 0; n < 256; n++ )
|
|
|
295 |
{
|
|
|
296 |
FT_UInt idx = TT_NEXT_USHORT( p );
|
|
|
297 |
|
|
|
298 |
|
|
|
299 |
/* value must be multiple of 8 */
|
|
|
300 |
if ( valid->level >= FT_VALIDATE_PARANOID && ( idx & 7 ) != 0 )
|
|
|
301 |
FT_INVALID_DATA;
|
|
|
302 |
|
|
|
303 |
idx >>= 3;
|
|
|
304 |
|
|
|
305 |
if ( idx > max_subs )
|
|
|
306 |
max_subs = idx;
|
|
|
307 |
}
|
|
|
308 |
|
|
|
309 |
FT_ASSERT( p == table + 518 );
|
|
|
310 |
|
|
|
311 |
subs = p;
|
|
|
312 |
glyph_ids = subs + (max_subs + 1) * 8;
|
|
|
313 |
if ( glyph_ids > valid->limit )
|
|
|
314 |
FT_INVALID_TOO_SHORT;
|
|
|
315 |
|
|
|
316 |
/* parse sub-headers */
|
|
|
317 |
for ( n = 0; n <= max_subs; n++ )
|
|
|
318 |
{
|
|
|
319 |
FT_UInt first_code, code_count, offset;
|
|
|
320 |
FT_Int delta;
|
|
|
321 |
FT_Byte* ids;
|
|
|
322 |
|
|
|
323 |
|
|
|
324 |
first_code = TT_NEXT_USHORT( p );
|
|
|
325 |
code_count = TT_NEXT_USHORT( p );
|
|
|
326 |
delta = TT_NEXT_SHORT( p );
|
|
|
327 |
offset = TT_NEXT_USHORT( p );
|
|
|
328 |
|
|
|
329 |
/* many Dynalab fonts have empty sub-headers */
|
|
|
330 |
if ( code_count == 0 )
|
|
|
331 |
continue;
|
|
|
332 |
|
|
|
333 |
/* check range within 0..255 */
|
|
|
334 |
if ( valid->level >= FT_VALIDATE_PARANOID )
|
|
|
335 |
{
|
|
|
336 |
if ( first_code >= 256 || first_code + code_count > 256 )
|
|
|
337 |
FT_INVALID_DATA;
|
|
|
338 |
}
|
|
|
339 |
|
|
|
340 |
/* check offset */
|
|
|
341 |
if ( offset != 0 )
|
|
|
342 |
{
|
|
|
343 |
ids = p - 2 + offset;
|
|
|
344 |
if ( ids < glyph_ids || ids + code_count*2 > table + length )
|
|
|
345 |
FT_INVALID_OFFSET;
|
|
|
346 |
|
|
|
347 |
/* check glyph IDs */
|
|
|
348 |
if ( valid->level >= FT_VALIDATE_TIGHT )
|
|
|
349 |
{
|
|
|
350 |
FT_Byte* limit = p + code_count * 2;
|
|
|
351 |
FT_UInt idx;
|
|
|
352 |
|
|
|
353 |
|
|
|
354 |
for ( ; p < limit; )
|
|
|
355 |
{
|
|
|
356 |
idx = TT_NEXT_USHORT( p );
|
|
|
357 |
if ( idx != 0 )
|
|
|
358 |
{
|
|
|
359 |
idx = ( idx + delta ) & 0xFFFFU;
|
|
|
360 |
if ( idx >= TT_VALID_GLYPH_COUNT( valid ) )
|
|
|
361 |
FT_INVALID_GLYPH_ID;
|
|
|
362 |
}
|
|
|
363 |
}
|
|
|
364 |
}
|
|
|
365 |
}
|
|
|
366 |
}
|
|
|
367 |
|
|
|
368 |
return SFNT_Err_Ok;
|
|
|
369 |
}
|
|
|
370 |
|
|
|
371 |
|
|
|
372 |
/* return sub header corresponding to a given character code */
|
|
|
373 |
/* NULL on invalid charcode */
|
|
|
374 |
static FT_Byte*
|
|
|
375 |
tt_cmap2_get_subheader( FT_Byte* table,
|
|
|
376 |
FT_UInt32 char_code )
|
|
|
377 |
{
|
|
|
378 |
FT_Byte* result = NULL;
|
|
|
379 |
|
|
|
380 |
|
|
|
381 |
if ( char_code < 0x10000UL )
|
|
|
382 |
{
|
|
|
383 |
FT_UInt char_lo = (FT_UInt)( char_code & 0xFF );
|
|
|
384 |
FT_UInt char_hi = (FT_UInt)( char_code >> 8 );
|
|
|
385 |
FT_Byte* p = table + 6; /* keys table */
|
|
|
386 |
FT_Byte* subs = table + 518; /* subheaders table */
|
|
|
387 |
FT_Byte* sub;
|
|
|
388 |
|
|
|
389 |
|
|
|
390 |
if ( char_hi == 0 )
|
|
|
391 |
{
|
|
|
392 |
/* an 8-bit character code -- we use subHeader 0 in this case */
|
|
|
393 |
/* to test whether the character code is in the charmap */
|
|
|
394 |
/* */
|
|
|
395 |
sub = subs; /* jump to first sub-header */
|
|
|
396 |
|
|
|
397 |
/* check that the sub-header for this byte is 0, which */
|
|
|
398 |
/* indicates that it is really a valid one-byte value */
|
|
|
399 |
/* Otherwise, return 0 */
|
|
|
400 |
/* */
|
|
|
401 |
p += char_lo * 2;
|
|
|
402 |
if ( TT_PEEK_USHORT( p ) != 0 )
|
|
|
403 |
goto Exit;
|
|
|
404 |
}
|
|
|
405 |
else
|
|
|
406 |
{
|
|
|
407 |
/* a 16-bit character code */
|
|
|
408 |
|
|
|
409 |
/* jump to key entry */
|
|
|
410 |
p += char_hi * 2;
|
|
|
411 |
/* jump to sub-header */
|
|
|
412 |
sub = subs + ( FT_PAD_FLOOR( TT_PEEK_USHORT( p ), 8 ) );
|
|
|
413 |
|
|
|
414 |
/* check that the high byte isn't a valid one-byte value */
|
|
|
415 |
if ( sub == subs )
|
|
|
416 |
goto Exit;
|
|
|
417 |
}
|
|
|
418 |
result = sub;
|
|
|
419 |
}
|
|
|
420 |
Exit:
|
|
|
421 |
return result;
|
|
|
422 |
}
|
|
|
423 |
|
|
|
424 |
|
|
|
425 |
FT_CALLBACK_DEF( FT_UInt )
|
|
|
426 |
tt_cmap2_char_index( TT_CMap cmap,
|
|
|
427 |
FT_UInt32 char_code )
|
|
|
428 |
{
|
|
|
429 |
FT_Byte* table = cmap->data;
|
|
|
430 |
FT_UInt result = 0;
|
|
|
431 |
FT_Byte* subheader;
|
|
|
432 |
|
|
|
433 |
|
|
|
434 |
subheader = tt_cmap2_get_subheader( table, char_code );
|
|
|
435 |
if ( subheader )
|
|
|
436 |
{
|
|
|
437 |
FT_Byte* p = subheader;
|
|
|
438 |
FT_UInt idx = (FT_UInt)(char_code & 0xFF);
|
|
|
439 |
FT_UInt start, count;
|
|
|
440 |
FT_Int delta;
|
|
|
441 |
FT_UInt offset;
|
|
|
442 |
|
|
|
443 |
|
|
|
444 |
start = TT_NEXT_USHORT( p );
|
|
|
445 |
count = TT_NEXT_USHORT( p );
|
|
|
446 |
delta = TT_NEXT_SHORT ( p );
|
|
|
447 |
offset = TT_PEEK_USHORT( p );
|
|
|
448 |
|
|
|
449 |
idx -= start;
|
|
|
450 |
if ( idx < count && offset != 0 )
|
|
|
451 |
{
|
|
|
452 |
p += offset + 2 * idx;
|
|
|
453 |
idx = TT_PEEK_USHORT( p );
|
|
|
454 |
|
|
|
455 |
if ( idx != 0 )
|
|
|
456 |
result = (FT_UInt)( idx + delta ) & 0xFFFFU;
|
|
|
457 |
}
|
|
|
458 |
}
|
|
|
459 |
return result;
|
|
|
460 |
}
|
|
|
461 |
|
|
|
462 |
|
|
|
463 |
FT_CALLBACK_DEF( FT_UInt32 )
|
|
|
464 |
tt_cmap2_char_next( TT_CMap cmap,
|
|
|
465 |
FT_UInt32 *pcharcode )
|
|
|
466 |
{
|
|
|
467 |
FT_Byte* table = cmap->data;
|
|
|
468 |
FT_UInt gindex = 0;
|
|
|
469 |
FT_UInt32 result = 0;
|
|
|
470 |
FT_UInt32 charcode = *pcharcode + 1;
|
|
|
471 |
FT_Byte* subheader;
|
|
|
472 |
|
|
|
473 |
|
|
|
474 |
while ( charcode < 0x10000UL )
|
|
|
475 |
{
|
|
|
476 |
subheader = tt_cmap2_get_subheader( table, charcode );
|
|
|
477 |
if ( subheader )
|
|
|
478 |
{
|
|
|
479 |
FT_Byte* p = subheader;
|
|
|
480 |
FT_UInt start = TT_NEXT_USHORT( p );
|
|
|
481 |
FT_UInt count = TT_NEXT_USHORT( p );
|
|
|
482 |
FT_Int delta = TT_NEXT_SHORT ( p );
|
|
|
483 |
FT_UInt offset = TT_PEEK_USHORT( p );
|
|
|
484 |
FT_UInt char_lo = (FT_UInt)( charcode & 0xFF );
|
|
|
485 |
FT_UInt pos, idx;
|
|
|
486 |
|
|
|
487 |
|
|
|
488 |
if ( offset == 0 )
|
|
|
489 |
goto Next_SubHeader;
|
|
|
490 |
|
|
|
491 |
if ( char_lo < start )
|
|
|
492 |
{
|
|
|
493 |
char_lo = start;
|
|
|
494 |
pos = 0;
|
|
|
495 |
}
|
|
|
496 |
else
|
|
|
497 |
pos = (FT_UInt)( char_lo - start );
|
|
|
498 |
|
|
|
499 |
p += offset + pos * 2;
|
|
|
500 |
charcode = FT_PAD_FLOOR( charcode, 256 ) + char_lo;
|
|
|
501 |
|
|
|
502 |
for ( ; pos < count; pos++, charcode++ )
|
|
|
503 |
{
|
|
|
504 |
idx = TT_NEXT_USHORT( p );
|
|
|
505 |
|
|
|
506 |
if ( idx != 0 )
|
|
|
507 |
{
|
|
|
508 |
gindex = ( idx + delta ) & 0xFFFFU;
|
|
|
509 |
if ( gindex != 0 )
|
|
|
510 |
{
|
|
|
511 |
result = charcode;
|
|
|
512 |
goto Exit;
|
|
|
513 |
}
|
|
|
514 |
}
|
|
|
515 |
}
|
|
|
516 |
}
|
|
|
517 |
|
|
|
518 |
/* jump to next sub-header, i.e. higher byte value */
|
|
|
519 |
Next_SubHeader:
|
|
|
520 |
charcode = FT_PAD_FLOOR( charcode, 256 ) + 256;
|
|
|
521 |
}
|
|
|
522 |
|
|
|
523 |
Exit:
|
|
|
524 |
*pcharcode = result;
|
|
|
525 |
|
|
|
526 |
return gindex;
|
|
|
527 |
}
|
|
|
528 |
|
|
|
529 |
|
|
|
530 |
FT_CALLBACK_DEF( FT_Error )
|
|
|
531 |
tt_cmap2_get_info( TT_CMap cmap,
|
|
|
532 |
TT_CMapInfo *cmap_info )
|
|
|
533 |
{
|
|
|
534 |
FT_Byte* p = cmap->data + 4;
|
|
|
535 |
|
|
|
536 |
|
|
|
537 |
cmap_info->format = 2;
|
|
|
538 |
cmap_info->language = (FT_ULong)TT_PEEK_USHORT( p );
|
|
|
539 |
|
|
|
540 |
return SFNT_Err_Ok;
|
|
|
541 |
}
|
|
|
542 |
|
|
|
543 |
|
|
|
544 |
FT_DEFINE_TT_CMAP(tt_cmap2_class_rec,
|
|
|
545 |
sizeof ( TT_CMapRec ),
|
|
|
546 |
|
|
|
547 |
(FT_CMap_InitFunc) tt_cmap_init,
|
|
|
548 |
(FT_CMap_DoneFunc) NULL,
|
|
|
549 |
(FT_CMap_CharIndexFunc)tt_cmap2_char_index,
|
|
|
550 |
(FT_CMap_CharNextFunc) tt_cmap2_char_next,
|
|
|
551 |
|
|
|
552 |
NULL, NULL, NULL, NULL, NULL
|
|
|
553 |
,
|
|
|
554 |
2,
|
|
|
555 |
(TT_CMap_ValidateFunc) tt_cmap2_validate,
|
|
|
556 |
(TT_CMap_Info_GetFunc) tt_cmap2_get_info
|
|
|
557 |
)
|
|
|
558 |
|
|
|
559 |
#endif /* TT_CONFIG_CMAP_FORMAT_2 */
|
|
|
560 |
|
|
|
561 |
|
|
|
562 |
/*************************************************************************/
|
|
|
563 |
/*************************************************************************/
|
|
|
564 |
/***** *****/
|
|
|
565 |
/***** FORMAT 4 *****/
|
|
|
566 |
/***** *****/
|
|
|
567 |
/*************************************************************************/
|
|
|
568 |
/*************************************************************************/
|
|
|
569 |
|
|
|
570 |
/*************************************************************************/
|
|
|
571 |
/* */
|
|
|
572 |
/* TABLE OVERVIEW */
|
|
|
573 |
/* -------------- */
|
|
|
574 |
/* */
|
|
|
575 |
/* NAME OFFSET TYPE DESCRIPTION */
|
|
|
576 |
/* */
|
|
|
577 |
/* format 0 USHORT must be 4 */
|
|
|
578 |
/* length 2 USHORT table length */
|
|
|
579 |
/* in bytes */
|
|
|
580 |
/* language 4 USHORT Mac language code */
|
|
|
581 |
/* */
|
|
|
582 |
/* segCountX2 6 USHORT 2*NUM_SEGS */
|
|
|
583 |
/* searchRange 8 USHORT 2*(1 << LOG_SEGS) */
|
|
|
584 |
/* entrySelector 10 USHORT LOG_SEGS */
|
|
|
585 |
/* rangeShift 12 USHORT segCountX2 - */
|
|
|
586 |
/* searchRange */
|
|
|
587 |
/* */
|
|
|
588 |
/* endCount 14 USHORT[NUM_SEGS] end charcode for */
|
|
|
589 |
/* each segment; last */
|
|
|
590 |
/* is 0xFFFF */
|
|
|
591 |
/* */
|
|
|
592 |
/* pad 14+NUM_SEGS*2 USHORT padding */
|
|
|
593 |
/* */
|
|
|
594 |
/* startCount 16+NUM_SEGS*2 USHORT[NUM_SEGS] first charcode for */
|
|
|
595 |
/* each segment */
|
|
|
596 |
/* */
|
|
|
597 |
/* idDelta 16+NUM_SEGS*4 SHORT[NUM_SEGS] delta for each */
|
|
|
598 |
/* segment */
|
|
|
599 |
/* idOffset 16+NUM_SEGS*6 SHORT[NUM_SEGS] range offset for */
|
|
|
600 |
/* each segment; can be */
|
|
|
601 |
/* zero */
|
|
|
602 |
/* */
|
|
|
603 |
/* glyphIds 16+NUM_SEGS*8 USHORT[] array of glyph ID */
|
|
|
604 |
/* ranges */
|
|
|
605 |
/* */
|
|
|
606 |
/* Character codes are modelled by a series of ordered (increasing) */
|
|
|
607 |
/* intervals called segments. Each segment has start and end codes, */
|
|
|
608 |
/* provided by the `startCount' and `endCount' arrays. Segments must */
|
|
|
609 |
/* not overlap, and the last segment should always contain the value */
|
|
|
610 |
/* 0xFFFF for `endCount'. */
|
|
|
611 |
/* */
|
|
|
612 |
/* The fields `searchRange', `entrySelector' and `rangeShift' are better */
|
|
|
613 |
/* ignored (they are traces of over-engineering in the TrueType */
|
|
|
614 |
/* specification). */
|
|
|
615 |
/* */
|
|
|
616 |
/* Each segment also has a signed `delta', as well as an optional offset */
|
|
|
617 |
/* within the `glyphIds' table. */
|
|
|
618 |
/* */
|
|
|
619 |
/* If a segment's idOffset is 0, the glyph index corresponding to any */
|
|
|
620 |
/* charcode within the segment is obtained by adding the value of */
|
|
|
621 |
/* `idDelta' directly to the charcode, modulo 65536. */
|
|
|
622 |
/* */
|
|
|
623 |
/* Otherwise, a glyph index is taken from the glyph IDs sub-array for */
|
|
|
624 |
/* the segment, and the value of `idDelta' is added to it. */
|
|
|
625 |
/* */
|
|
|
626 |
/* */
|
|
|
627 |
/* Finally, note that a lot of fonts contain an invalid last segment, */
|
|
|
628 |
/* where `start' and `end' are correctly set to 0xFFFF but both `delta' */
|
|
|
629 |
/* and `offset' are incorrect (e.g., `opens___.ttf' which comes with */
|
|
|
630 |
/* OpenOffice.org). We need special code to deal with them correctly. */
|
|
|
631 |
/* */
|
|
|
632 |
|
|
|
633 |
#ifdef TT_CONFIG_CMAP_FORMAT_4
|
|
|
634 |
|
|
|
635 |
typedef struct TT_CMap4Rec_
|
|
|
636 |
{
|
|
|
637 |
TT_CMapRec cmap;
|
|
|
638 |
FT_UInt32 cur_charcode; /* current charcode */
|
|
|
639 |
FT_UInt cur_gindex; /* current glyph index */
|
|
|
640 |
|
|
|
641 |
FT_UInt num_ranges;
|
|
|
642 |
FT_UInt cur_range;
|
|
|
643 |
FT_UInt cur_start;
|
|
|
644 |
FT_UInt cur_end;
|
|
|
645 |
FT_Int cur_delta;
|
|
|
646 |
FT_Byte* cur_values;
|
|
|
647 |
|
|
|
648 |
} TT_CMap4Rec, *TT_CMap4;
|
|
|
649 |
|
|
|
650 |
|
|
|
651 |
FT_CALLBACK_DEF( FT_Error )
|
|
|
652 |
tt_cmap4_init( TT_CMap4 cmap,
|
|
|
653 |
FT_Byte* table )
|
|
|
654 |
{
|
|
|
655 |
FT_Byte* p;
|
|
|
656 |
|
|
|
657 |
|
|
|
658 |
cmap->cmap.data = table;
|
|
|
659 |
|
|
|
660 |
p = table + 6;
|
|
|
661 |
cmap->num_ranges = FT_PEEK_USHORT( p ) >> 1;
|
|
|
662 |
cmap->cur_charcode = (FT_UInt32)0xFFFFFFFFUL;
|
|
|
663 |
cmap->cur_gindex = 0;
|
|
|
664 |
|
|
|
665 |
return SFNT_Err_Ok;
|
|
|
666 |
}
|
|
|
667 |
|
|
|
668 |
|
|
|
669 |
static FT_Int
|
|
|
670 |
tt_cmap4_set_range( TT_CMap4 cmap,
|
|
|
671 |
FT_UInt range_index )
|
|
|
672 |
{
|
|
|
673 |
FT_Byte* table = cmap->cmap.data;
|
|
|
674 |
FT_Byte* p;
|
|
|
675 |
FT_UInt num_ranges = cmap->num_ranges;
|
|
|
676 |
|
|
|
677 |
|
|
|
678 |
while ( range_index < num_ranges )
|
|
|
679 |
{
|
|
|
680 |
FT_UInt offset;
|
|
|
681 |
|
|
|
682 |
|
|
|
683 |
p = table + 14 + range_index * 2;
|
|
|
684 |
cmap->cur_end = FT_PEEK_USHORT( p );
|
|
|
685 |
|
|
|
686 |
p += 2 + num_ranges * 2;
|
|
|
687 |
cmap->cur_start = FT_PEEK_USHORT( p );
|
|
|
688 |
|
|
|
689 |
p += num_ranges * 2;
|
|
|
690 |
cmap->cur_delta = FT_PEEK_SHORT( p );
|
|
|
691 |
|
|
|
692 |
p += num_ranges * 2;
|
|
|
693 |
offset = FT_PEEK_USHORT( p );
|
|
|
694 |
|
|
|
695 |
/* some fonts have an incorrect last segment; */
|
|
|
696 |
/* we have to catch it */
|
|
|
697 |
if ( range_index >= num_ranges - 1 &&
|
|
|
698 |
cmap->cur_start == 0xFFFFU &&
|
|
|
699 |
cmap->cur_end == 0xFFFFU )
|
|
|
700 |
{
|
|
|
701 |
TT_Face face = (TT_Face)cmap->cmap.cmap.charmap.face;
|
|
|
702 |
FT_Byte* limit = face->cmap_table + face->cmap_size;
|
|
|
703 |
|
|
|
704 |
|
|
|
705 |
if ( offset && p + offset + 2 > limit )
|
|
|
706 |
{
|
|
|
707 |
cmap->cur_delta = 1;
|
|
|
708 |
offset = 0;
|
|
|
709 |
}
|
|
|
710 |
}
|
|
|
711 |
|
|
|
712 |
if ( offset != 0xFFFFU )
|
|
|
713 |
{
|
|
|
714 |
cmap->cur_values = offset ? p + offset : NULL;
|
|
|
715 |
cmap->cur_range = range_index;
|
|
|
716 |
return 0;
|
|
|
717 |
}
|
|
|
718 |
|
|
|
719 |
/* we skip empty segments */
|
|
|
720 |
range_index++;
|
|
|
721 |
}
|
|
|
722 |
|
|
|
723 |
return -1;
|
|
|
724 |
}
|
|
|
725 |
|
|
|
726 |
|
|
|
727 |
/* search the index of the charcode next to cmap->cur_charcode; */
|
|
|
728 |
/* caller should call tt_cmap4_set_range with proper range */
|
|
|
729 |
/* before calling this function */
|
|
|
730 |
/* */
|
|
|
731 |
static void
|
|
|
732 |
tt_cmap4_next( TT_CMap4 cmap )
|
|
|
733 |
{
|
|
|
734 |
FT_UInt charcode;
|
|
|
735 |
|
|
|
736 |
|
|
|
737 |
if ( cmap->cur_charcode >= 0xFFFFUL )
|
|
|
738 |
goto Fail;
|
|
|
739 |
|
|
|
740 |
charcode = (FT_UInt)cmap->cur_charcode + 1;
|
|
|
741 |
|
|
|
742 |
if ( charcode < cmap->cur_start )
|
|
|
743 |
charcode = cmap->cur_start;
|
|
|
744 |
|
|
|
745 |
for ( ;; )
|
|
|
746 |
{
|
|
|
747 |
FT_Byte* values = cmap->cur_values;
|
|
|
748 |
FT_UInt end = cmap->cur_end;
|
|
|
749 |
FT_Int delta = cmap->cur_delta;
|
|
|
750 |
|
|
|
751 |
|
|
|
752 |
if ( charcode <= end )
|
|
|
753 |
{
|
|
|
754 |
if ( values )
|
|
|
755 |
{
|
|
|
756 |
FT_Byte* p = values + 2 * ( charcode - cmap->cur_start );
|
|
|
757 |
|
|
|
758 |
|
|
|
759 |
do
|
|
|
760 |
{
|
|
|
761 |
FT_UInt gindex = FT_NEXT_USHORT( p );
|
|
|
762 |
|
|
|
763 |
|
|
|
764 |
if ( gindex != 0 )
|
|
|
765 |
{
|
|
|
766 |
gindex = (FT_UInt)( ( gindex + delta ) & 0xFFFFU );
|
|
|
767 |
if ( gindex != 0 )
|
|
|
768 |
{
|
|
|
769 |
cmap->cur_charcode = charcode;
|
|
|
770 |
cmap->cur_gindex = gindex;
|
|
|
771 |
return;
|
|
|
772 |
}
|
|
|
773 |
}
|
|
|
774 |
} while ( ++charcode <= end );
|
|
|
775 |
}
|
|
|
776 |
else
|
|
|
777 |
{
|
|
|
778 |
do
|
|
|
779 |
{
|
|
|
780 |
FT_UInt gindex = (FT_UInt)( ( charcode + delta ) & 0xFFFFU );
|
|
|
781 |
|
|
|
782 |
|
|
|
783 |
if ( gindex != 0 )
|
|
|
784 |
{
|
|
|
785 |
cmap->cur_charcode = charcode;
|
|
|
786 |
cmap->cur_gindex = gindex;
|
|
|
787 |
return;
|
|
|
788 |
}
|
|
|
789 |
} while ( ++charcode <= end );
|
|
|
790 |
}
|
|
|
791 |
}
|
|
|
792 |
|
|
|
793 |
/* we need to find another range */
|
|
|
794 |
if ( tt_cmap4_set_range( cmap, cmap->cur_range + 1 ) < 0 )
|
|
|
795 |
break;
|
|
|
796 |
|
|
|
797 |
if ( charcode < cmap->cur_start )
|
|
|
798 |
charcode = cmap->cur_start;
|
|
|
799 |
}
|
|
|
800 |
|
|
|
801 |
Fail:
|
|
|
802 |
cmap->cur_charcode = (FT_UInt32)0xFFFFFFFFUL;
|
|
|
803 |
cmap->cur_gindex = 0;
|
|
|
804 |
}
|
|
|
805 |
|
|
|
806 |
|
|
|
807 |
FT_CALLBACK_DEF( FT_Error )
|
|
|
808 |
tt_cmap4_validate( FT_Byte* table,
|
|
|
809 |
FT_Validator valid )
|
|
|
810 |
{
|
|
|
811 |
FT_Byte* p = table + 2; /* skip format */
|
|
|
812 |
FT_UInt length = TT_NEXT_USHORT( p );
|
|
|
813 |
FT_Byte *ends, *starts, *offsets, *deltas, *glyph_ids;
|
|
|
814 |
FT_UInt num_segs;
|
|
|
815 |
FT_Error error = SFNT_Err_Ok;
|
|
|
816 |
|
|
|
817 |
|
|
|
818 |
if ( length < 16 )
|
|
|
819 |
FT_INVALID_TOO_SHORT;
|
|
|
820 |
|
|
|
821 |
/* in certain fonts, the `length' field is invalid and goes */
|
|
|
822 |
/* out of bound. We try to correct this here... */
|
|
|
823 |
if ( table + length > valid->limit )
|
|
|
824 |
{
|
|
|
825 |
if ( valid->level >= FT_VALIDATE_TIGHT )
|
|
|
826 |
FT_INVALID_TOO_SHORT;
|
|
|
827 |
|
|
|
828 |
length = (FT_UInt)( valid->limit - table );
|
|
|
829 |
}
|
|
|
830 |
|
|
|
831 |
p = table + 6;
|
|
|
832 |
num_segs = TT_NEXT_USHORT( p ); /* read segCountX2 */
|
|
|
833 |
|
|
|
834 |
if ( valid->level >= FT_VALIDATE_PARANOID )
|
|
|
835 |
{
|
|
|
836 |
/* check that we have an even value here */
|
|
|
837 |
if ( num_segs & 1 )
|
|
|
838 |
FT_INVALID_DATA;
|
|
|
839 |
}
|
|
|
840 |
|
|
|
841 |
num_segs /= 2;
|
|
|
842 |
|
|
|
843 |
if ( length < 16 + num_segs * 2 * 4 )
|
|
|
844 |
FT_INVALID_TOO_SHORT;
|
|
|
845 |
|
|
|
846 |
/* check the search parameters - even though we never use them */
|
|
|
847 |
/* */
|
|
|
848 |
if ( valid->level >= FT_VALIDATE_PARANOID )
|
|
|
849 |
{
|
|
|
850 |
/* check the values of `searchRange', `entrySelector', `rangeShift' */
|
|
|
851 |
FT_UInt search_range = TT_NEXT_USHORT( p );
|
|
|
852 |
FT_UInt entry_selector = TT_NEXT_USHORT( p );
|
|
|
853 |
FT_UInt range_shift = TT_NEXT_USHORT( p );
|
|
|
854 |
|
|
|
855 |
|
|
|
856 |
if ( ( search_range | range_shift ) & 1 ) /* must be even values */
|
|
|
857 |
FT_INVALID_DATA;
|
|
|
858 |
|
|
|
859 |
search_range /= 2;
|
|
|
860 |
range_shift /= 2;
|
|
|
861 |
|
|
|
862 |
/* `search range' is the greatest power of 2 that is <= num_segs */
|
|
|
863 |
|
|
|
864 |
if ( search_range > num_segs ||
|
|
|
865 |
search_range * 2 < num_segs ||
|
|
|
866 |
search_range + range_shift != num_segs ||
|
|
|
867 |
search_range != ( 1U << entry_selector ) )
|
|
|
868 |
FT_INVALID_DATA;
|
|
|
869 |
}
|
|
|
870 |
|
|
|
871 |
ends = table + 14;
|
|
|
872 |
starts = table + 16 + num_segs * 2;
|
|
|
873 |
deltas = starts + num_segs * 2;
|
|
|
874 |
offsets = deltas + num_segs * 2;
|
|
|
875 |
glyph_ids = offsets + num_segs * 2;
|
|
|
876 |
|
|
|
877 |
/* check last segment; its end count value must be 0xFFFF */
|
|
|
878 |
if ( valid->level >= FT_VALIDATE_PARANOID )
|
|
|
879 |
{
|
|
|
880 |
p = ends + ( num_segs - 1 ) * 2;
|
|
|
881 |
if ( TT_PEEK_USHORT( p ) != 0xFFFFU )
|
|
|
882 |
FT_INVALID_DATA;
|
|
|
883 |
}
|
|
|
884 |
|
|
|
885 |
{
|
|
|
886 |
FT_UInt start, end, offset, n;
|
|
|
887 |
FT_UInt last_start = 0, last_end = 0;
|
|
|
888 |
FT_Int delta;
|
|
|
889 |
FT_Byte* p_start = starts;
|
|
|
890 |
FT_Byte* p_end = ends;
|
|
|
891 |
FT_Byte* p_delta = deltas;
|
|
|
892 |
FT_Byte* p_offset = offsets;
|
|
|
893 |
|
|
|
894 |
|
|
|
895 |
for ( n = 0; n < num_segs; n++ )
|
|
|
896 |
{
|
|
|
897 |
p = p_offset;
|
|
|
898 |
start = TT_NEXT_USHORT( p_start );
|
|
|
899 |
end = TT_NEXT_USHORT( p_end );
|
|
|
900 |
delta = TT_NEXT_SHORT( p_delta );
|
|
|
901 |
offset = TT_NEXT_USHORT( p_offset );
|
|
|
902 |
|
|
|
903 |
if ( start > end )
|
|
|
904 |
FT_INVALID_DATA;
|
|
|
905 |
|
|
|
906 |
/* this test should be performed at default validation level; */
|
|
|
907 |
/* unfortunately, some popular Asian fonts have overlapping */
|
|
|
908 |
/* ranges in their charmaps */
|
|
|
909 |
/* */
|
|
|
910 |
if ( start <= last_end && n > 0 )
|
|
|
911 |
{
|
|
|
912 |
if ( valid->level >= FT_VALIDATE_TIGHT )
|
|
|
913 |
FT_INVALID_DATA;
|
|
|
914 |
else
|
|
|
915 |
{
|
|
|
916 |
/* allow overlapping segments, provided their start points */
|
|
|
917 |
/* and end points, respectively, are in ascending order */
|
|
|
918 |
/* */
|
|
|
919 |
if ( last_start > start || last_end > end )
|
|
|
920 |
error |= TT_CMAP_FLAG_UNSORTED;
|
|
|
921 |
else
|
|
|
922 |
error |= TT_CMAP_FLAG_OVERLAPPING;
|
|
|
923 |
}
|
|
|
924 |
}
|
|
|
925 |
|
|
|
926 |
if ( offset && offset != 0xFFFFU )
|
|
|
927 |
{
|
|
|
928 |
p += offset; /* start of glyph ID array */
|
|
|
929 |
|
|
|
930 |
/* check that we point within the glyph IDs table only */
|
|
|
931 |
if ( valid->level >= FT_VALIDATE_TIGHT )
|
|
|
932 |
{
|
|
|
933 |
if ( p < glyph_ids ||
|
|
|
934 |
p + ( end - start + 1 ) * 2 > table + length )
|
|
|
935 |
FT_INVALID_DATA;
|
|
|
936 |
}
|
|
|
937 |
/* Some fonts handle the last segment incorrectly. In */
|
|
|
938 |
/* theory, 0xFFFF might point to an ordinary glyph -- */
|
|
|
939 |
/* a cmap 4 is versatile and could be used for any */
|
|
|
940 |
/* encoding, not only Unicode. However, reality shows */
|
|
|
941 |
/* that far too many fonts are sloppy and incorrectly */
|
|
|
942 |
/* set all fields but `start' and `end' for the last */
|
|
|
943 |
/* segment if it contains only a single character. */
|
|
|
944 |
/* */
|
|
|
945 |
/* We thus omit the test here, delaying it to the */
|
|
|
946 |
/* routines which actually access the cmap. */
|
|
|
947 |
else if ( n != num_segs - 1 ||
|
|
|
948 |
!( start == 0xFFFFU && end == 0xFFFFU ) )
|
|
|
949 |
{
|
|
|
950 |
if ( p < glyph_ids ||
|
|
|
951 |
p + ( end - start + 1 ) * 2 > valid->limit )
|
|
|
952 |
FT_INVALID_DATA;
|
|
|
953 |
}
|
|
|
954 |
|
|
|
955 |
/* check glyph indices within the segment range */
|
|
|
956 |
if ( valid->level >= FT_VALIDATE_TIGHT )
|
|
|
957 |
{
|
|
|
958 |
FT_UInt i, idx;
|
|
|
959 |
|
|
|
960 |
|
|
|
961 |
for ( i = start; i < end; i++ )
|
|
|
962 |
{
|
|
|
963 |
idx = FT_NEXT_USHORT( p );
|
|
|
964 |
if ( idx != 0 )
|
|
|
965 |
{
|
|
|
966 |
idx = (FT_UInt)( idx + delta ) & 0xFFFFU;
|
|
|
967 |
|
|
|
968 |
if ( idx >= TT_VALID_GLYPH_COUNT( valid ) )
|
|
|
969 |
FT_INVALID_GLYPH_ID;
|
|
|
970 |
}
|
|
|
971 |
}
|
|
|
972 |
}
|
|
|
973 |
}
|
|
|
974 |
else if ( offset == 0xFFFFU )
|
|
|
975 |
{
|
|
|
976 |
/* some fonts (erroneously?) use a range offset of 0xFFFF */
|
|
|
977 |
/* to mean missing glyph in cmap table */
|
|
|
978 |
/* */
|
|
|
979 |
if ( valid->level >= FT_VALIDATE_PARANOID ||
|
|
|
980 |
n != num_segs - 1 ||
|
|
|
981 |
!( start == 0xFFFFU && end == 0xFFFFU ) )
|
|
|
982 |
FT_INVALID_DATA;
|
|
|
983 |
}
|
|
|
984 |
|
|
|
985 |
last_start = start;
|
|
|
986 |
last_end = end;
|
|
|
987 |
}
|
|
|
988 |
}
|
|
|
989 |
|
|
|
990 |
return error;
|
|
|
991 |
}
|
|
|
992 |
|
|
|
993 |
|
|
|
994 |
static FT_UInt
|
|
|
995 |
tt_cmap4_char_map_linear( TT_CMap cmap,
|
|
|
996 |
FT_UInt32* pcharcode,
|
|
|
997 |
FT_Bool next )
|
|
|
998 |
{
|
|
|
999 |
FT_UInt num_segs2, start, end, offset;
|
|
|
1000 |
FT_Int delta;
|
|
|
1001 |
FT_UInt i, num_segs;
|
|
|
1002 |
FT_UInt32 charcode = *pcharcode;
|
|
|
1003 |
FT_UInt gindex = 0;
|
|
|
1004 |
FT_Byte* p;
|
|
|
1005 |
|
|
|
1006 |
|
|
|
1007 |
p = cmap->data + 6;
|
|
|
1008 |
num_segs2 = FT_PAD_FLOOR( TT_PEEK_USHORT( p ), 2 );
|
|
|
1009 |
|
|
|
1010 |
num_segs = num_segs2 >> 1;
|
|
|
1011 |
|
|
|
1012 |
if ( !num_segs )
|
|
|
1013 |
return 0;
|
|
|
1014 |
|
|
|
1015 |
if ( next )
|
|
|
1016 |
charcode++;
|
|
|
1017 |
|
|
|
1018 |
/* linear search */
|
|
|
1019 |
for ( ; charcode <= 0xFFFFU; charcode++ )
|
|
|
1020 |
{
|
|
|
1021 |
FT_Byte* q;
|
|
|
1022 |
|
|
|
1023 |
|
|
|
1024 |
p = cmap->data + 14; /* ends table */
|
|
|
1025 |
q = cmap->data + 16 + num_segs2; /* starts table */
|
|
|
1026 |
|
|
|
1027 |
for ( i = 0; i < num_segs; i++ )
|
|
|
1028 |
{
|
|
|
1029 |
end = TT_NEXT_USHORT( p );
|
|
|
1030 |
start = TT_NEXT_USHORT( q );
|
|
|
1031 |
|
|
|
1032 |
if ( charcode >= start && charcode <= end )
|
|
|
1033 |
{
|
|
|
1034 |
p = q - 2 + num_segs2;
|
|
|
1035 |
delta = TT_PEEK_SHORT( p );
|
|
|
1036 |
p += num_segs2;
|
|
|
1037 |
offset = TT_PEEK_USHORT( p );
|
|
|
1038 |
|
|
|
1039 |
/* some fonts have an incorrect last segment; */
|
|
|
1040 |
/* we have to catch it */
|
|
|
1041 |
if ( i >= num_segs - 1 &&
|
|
|
1042 |
start == 0xFFFFU && end == 0xFFFFU )
|
|
|
1043 |
{
|
|
|
1044 |
TT_Face face = (TT_Face)cmap->cmap.charmap.face;
|
|
|
1045 |
FT_Byte* limit = face->cmap_table + face->cmap_size;
|
|
|
1046 |
|
|
|
1047 |
|
|
|
1048 |
if ( offset && p + offset + 2 > limit )
|
|
|
1049 |
{
|
|
|
1050 |
delta = 1;
|
|
|
1051 |
offset = 0;
|
|
|
1052 |
}
|
|
|
1053 |
}
|
|
|
1054 |
|
|
|
1055 |
if ( offset == 0xFFFFU )
|
|
|
1056 |
continue;
|
|
|
1057 |
|
|
|
1058 |
if ( offset )
|
|
|
1059 |
{
|
|
|
1060 |
p += offset + ( charcode - start ) * 2;
|
|
|
1061 |
gindex = TT_PEEK_USHORT( p );
|
|
|
1062 |
if ( gindex != 0 )
|
|
|
1063 |
gindex = (FT_UInt)( gindex + delta ) & 0xFFFFU;
|
|
|
1064 |
}
|
|
|
1065 |
else
|
|
|
1066 |
gindex = (FT_UInt)( charcode + delta ) & 0xFFFFU;
|
|
|
1067 |
|
|
|
1068 |
break;
|
|
|
1069 |
}
|
|
|
1070 |
}
|
|
|
1071 |
|
|
|
1072 |
if ( !next || gindex )
|
|
|
1073 |
break;
|
|
|
1074 |
}
|
|
|
1075 |
|
|
|
1076 |
if ( next && gindex )
|
|
|
1077 |
*pcharcode = charcode;
|
|
|
1078 |
|
|
|
1079 |
return gindex;
|
|
|
1080 |
}
|
|
|
1081 |
|
|
|
1082 |
|
|
|
1083 |
static FT_UInt
|
|
|
1084 |
tt_cmap4_char_map_binary( TT_CMap cmap,
|
|
|
1085 |
FT_UInt32* pcharcode,
|
|
|
1086 |
FT_Bool next )
|
|
|
1087 |
{
|
|
|
1088 |
FT_UInt num_segs2, start, end, offset;
|
|
|
1089 |
FT_Int delta;
|
|
|
1090 |
FT_UInt max, min, mid, num_segs;
|
|
|
1091 |
FT_UInt charcode = (FT_UInt)*pcharcode;
|
|
|
1092 |
FT_UInt gindex = 0;
|
|
|
1093 |
FT_Byte* p;
|
|
|
1094 |
|
|
|
1095 |
|
|
|
1096 |
p = cmap->data + 6;
|
|
|
1097 |
num_segs2 = FT_PAD_FLOOR( TT_PEEK_USHORT( p ), 2 );
|
|
|
1098 |
|
|
|
1099 |
if ( !num_segs2 )
|
|
|
1100 |
return 0;
|
|
|
1101 |
|
|
|
1102 |
num_segs = num_segs2 >> 1;
|
|
|
1103 |
|
|
|
1104 |
/* make compiler happy */
|
|
|
1105 |
mid = num_segs;
|
|
|
1106 |
end = 0xFFFFU;
|
|
|
1107 |
|
|
|
1108 |
if ( next )
|
|
|
1109 |
charcode++;
|
|
|
1110 |
|
|
|
1111 |
min = 0;
|
|
|
1112 |
max = num_segs;
|
|
|
1113 |
|
|
|
1114 |
/* binary search */
|
|
|
1115 |
while ( min < max )
|
|
|
1116 |
{
|
|
|
1117 |
mid = ( min + max ) >> 1;
|
|
|
1118 |
p = cmap->data + 14 + mid * 2;
|
|
|
1119 |
end = TT_PEEK_USHORT( p );
|
|
|
1120 |
p += 2 + num_segs2;
|
|
|
1121 |
start = TT_PEEK_USHORT( p );
|
|
|
1122 |
|
|
|
1123 |
if ( charcode < start )
|
|
|
1124 |
max = mid;
|
|
|
1125 |
else if ( charcode > end )
|
|
|
1126 |
min = mid + 1;
|
|
|
1127 |
else
|
|
|
1128 |
{
|
|
|
1129 |
p += num_segs2;
|
|
|
1130 |
delta = TT_PEEK_SHORT( p );
|
|
|
1131 |
p += num_segs2;
|
|
|
1132 |
offset = TT_PEEK_USHORT( p );
|
|
|
1133 |
|
|
|
1134 |
/* some fonts have an incorrect last segment; */
|
|
|
1135 |
/* we have to catch it */
|
|
|
1136 |
if ( mid >= num_segs - 1 &&
|
|
|
1137 |
start == 0xFFFFU && end == 0xFFFFU )
|
|
|
1138 |
{
|
|
|
1139 |
TT_Face face = (TT_Face)cmap->cmap.charmap.face;
|
|
|
1140 |
FT_Byte* limit = face->cmap_table + face->cmap_size;
|
|
|
1141 |
|
|
|
1142 |
|
|
|
1143 |
if ( offset && p + offset + 2 > limit )
|
|
|
1144 |
{
|
|
|
1145 |
delta = 1;
|
|
|
1146 |
offset = 0;
|
|
|
1147 |
}
|
|
|
1148 |
}
|
|
|
1149 |
|
|
|
1150 |
/* search the first segment containing `charcode' */
|
|
|
1151 |
if ( cmap->flags & TT_CMAP_FLAG_OVERLAPPING )
|
|
|
1152 |
{
|
|
|
1153 |
FT_UInt i;
|
|
|
1154 |
|
|
|
1155 |
|
|
|
1156 |
/* call the current segment `max' */
|
|
|
1157 |
max = mid;
|
|
|
1158 |
|
|
|
1159 |
if ( offset == 0xFFFFU )
|
|
|
1160 |
mid = max + 1;
|
|
|
1161 |
|
|
|
1162 |
/* search in segments before the current segment */
|
|
|
1163 |
for ( i = max ; i > 0; i-- )
|
|
|
1164 |
{
|
|
|
1165 |
FT_UInt prev_end;
|
|
|
1166 |
FT_Byte* old_p;
|
|
|
1167 |
|
|
|
1168 |
|
|
|
1169 |
old_p = p;
|
|
|
1170 |
p = cmap->data + 14 + ( i - 1 ) * 2;
|
|
|
1171 |
prev_end = TT_PEEK_USHORT( p );
|
|
|
1172 |
|
|
|
1173 |
if ( charcode > prev_end )
|
|
|
1174 |
{
|
|
|
1175 |
p = old_p;
|
|
|
1176 |
break;
|
|
|
1177 |
}
|
|
|
1178 |
|
|
|
1179 |
end = prev_end;
|
|
|
1180 |
p += 2 + num_segs2;
|
|
|
1181 |
start = TT_PEEK_USHORT( p );
|
|
|
1182 |
p += num_segs2;
|
|
|
1183 |
delta = TT_PEEK_SHORT( p );
|
|
|
1184 |
p += num_segs2;
|
|
|
1185 |
offset = TT_PEEK_USHORT( p );
|
|
|
1186 |
|
|
|
1187 |
if ( offset != 0xFFFFU )
|
|
|
1188 |
mid = i - 1;
|
|
|
1189 |
}
|
|
|
1190 |
|
|
|
1191 |
/* no luck */
|
|
|
1192 |
if ( mid == max + 1 )
|
|
|
1193 |
{
|
|
|
1194 |
if ( i != max )
|
|
|
1195 |
{
|
|
|
1196 |
p = cmap->data + 14 + max * 2;
|
|
|
1197 |
end = TT_PEEK_USHORT( p );
|
|
|
1198 |
p += 2 + num_segs2;
|
|
|
1199 |
start = TT_PEEK_USHORT( p );
|
|
|
1200 |
p += num_segs2;
|
|
|
1201 |
delta = TT_PEEK_SHORT( p );
|
|
|
1202 |
p += num_segs2;
|
|
|
1203 |
offset = TT_PEEK_USHORT( p );
|
|
|
1204 |
}
|
|
|
1205 |
|
|
|
1206 |
mid = max;
|
|
|
1207 |
|
|
|
1208 |
/* search in segments after the current segment */
|
|
|
1209 |
for ( i = max + 1; i < num_segs; i++ )
|
|
|
1210 |
{
|
|
|
1211 |
FT_UInt next_end, next_start;
|
|
|
1212 |
|
|
|
1213 |
|
|
|
1214 |
p = cmap->data + 14 + i * 2;
|
|
|
1215 |
next_end = TT_PEEK_USHORT( p );
|
|
|
1216 |
p += 2 + num_segs2;
|
|
|
1217 |
next_start = TT_PEEK_USHORT( p );
|
|
|
1218 |
|
|
|
1219 |
if ( charcode < next_start )
|
|
|
1220 |
break;
|
|
|
1221 |
|
|
|
1222 |
end = next_end;
|
|
|
1223 |
start = next_start;
|
|
|
1224 |
p += num_segs2;
|
|
|
1225 |
delta = TT_PEEK_SHORT( p );
|
|
|
1226 |
p += num_segs2;
|
|
|
1227 |
offset = TT_PEEK_USHORT( p );
|
|
|
1228 |
|
|
|
1229 |
if ( offset != 0xFFFFU )
|
|
|
1230 |
mid = i;
|
|
|
1231 |
}
|
|
|
1232 |
i--;
|
|
|
1233 |
|
|
|
1234 |
/* still no luck */
|
|
|
1235 |
if ( mid == max )
|
|
|
1236 |
{
|
|
|
1237 |
mid = i;
|
|
|
1238 |
|
|
|
1239 |
break;
|
|
|
1240 |
}
|
|
|
1241 |
}
|
|
|
1242 |
|
|
|
1243 |
/* end, start, delta, and offset are for the i'th segment */
|
|
|
1244 |
if ( mid != i )
|
|
|
1245 |
{
|
|
|
1246 |
p = cmap->data + 14 + mid * 2;
|
|
|
1247 |
end = TT_PEEK_USHORT( p );
|
|
|
1248 |
p += 2 + num_segs2;
|
|
|
1249 |
start = TT_PEEK_USHORT( p );
|
|
|
1250 |
p += num_segs2;
|
|
|
1251 |
delta = TT_PEEK_SHORT( p );
|
|
|
1252 |
p += num_segs2;
|
|
|
1253 |
offset = TT_PEEK_USHORT( p );
|
|
|
1254 |
}
|
|
|
1255 |
}
|
|
|
1256 |
else
|
|
|
1257 |
{
|
|
|
1258 |
if ( offset == 0xFFFFU )
|
|
|
1259 |
break;
|
|
|
1260 |
}
|
|
|
1261 |
|
|
|
1262 |
if ( offset )
|
|
|
1263 |
{
|
|
|
1264 |
p += offset + ( charcode - start ) * 2;
|
|
|
1265 |
gindex = TT_PEEK_USHORT( p );
|
|
|
1266 |
if ( gindex != 0 )
|
|
|
1267 |
gindex = (FT_UInt)( gindex + delta ) & 0xFFFFU;
|
|
|
1268 |
}
|
|
|
1269 |
else
|
|
|
1270 |
gindex = (FT_UInt)( charcode + delta ) & 0xFFFFU;
|
|
|
1271 |
|
|
|
1272 |
break;
|
|
|
1273 |
}
|
|
|
1274 |
}
|
|
|
1275 |
|
|
|
1276 |
if ( next )
|
|
|
1277 |
{
|
|
|
1278 |
TT_CMap4 cmap4 = (TT_CMap4)cmap;
|
|
|
1279 |
|
|
|
1280 |
|
|
|
1281 |
/* if `charcode' is not in any segment, then `mid' is */
|
|
|
1282 |
/* the segment nearest to `charcode' */
|
|
|
1283 |
/* */
|
|
|
1284 |
|
|
|
1285 |
if ( charcode > end )
|
|
|
1286 |
{
|
|
|
1287 |
mid++;
|
|
|
1288 |
if ( mid == num_segs )
|
|
|
1289 |
return 0;
|
|
|
1290 |
}
|
|
|
1291 |
|
|
|
1292 |
if ( tt_cmap4_set_range( cmap4, mid ) )
|
|
|
1293 |
{
|
|
|
1294 |
if ( gindex )
|
|
|
1295 |
*pcharcode = charcode;
|
|
|
1296 |
}
|
|
|
1297 |
else
|
|
|
1298 |
{
|
|
|
1299 |
cmap4->cur_charcode = charcode;
|
|
|
1300 |
|
|
|
1301 |
if ( gindex )
|
|
|
1302 |
cmap4->cur_gindex = gindex;
|
|
|
1303 |
else
|
|
|
1304 |
{
|
|
|
1305 |
cmap4->cur_charcode = charcode;
|
|
|
1306 |
tt_cmap4_next( cmap4 );
|
|
|
1307 |
gindex = cmap4->cur_gindex;
|
|
|
1308 |
}
|
|
|
1309 |
|
|
|
1310 |
if ( gindex )
|
|
|
1311 |
*pcharcode = cmap4->cur_charcode;
|
|
|
1312 |
}
|
|
|
1313 |
}
|
|
|
1314 |
|
|
|
1315 |
return gindex;
|
|
|
1316 |
}
|
|
|
1317 |
|
|
|
1318 |
|
|
|
1319 |
FT_CALLBACK_DEF( FT_UInt )
|
|
|
1320 |
tt_cmap4_char_index( TT_CMap cmap,
|
|
|
1321 |
FT_UInt32 char_code )
|
|
|
1322 |
{
|
|
|
1323 |
if ( char_code >= 0x10000UL )
|
|
|
1324 |
return 0;
|
|
|
1325 |
|
|
|
1326 |
if ( cmap->flags & TT_CMAP_FLAG_UNSORTED )
|
|
|
1327 |
return tt_cmap4_char_map_linear( cmap, &char_code, 0 );
|
|
|
1328 |
else
|
|
|
1329 |
return tt_cmap4_char_map_binary( cmap, &char_code, 0 );
|
|
|
1330 |
}
|
|
|
1331 |
|
|
|
1332 |
|
|
|
1333 |
FT_CALLBACK_DEF( FT_UInt32 )
|
|
|
1334 |
tt_cmap4_char_next( TT_CMap cmap,
|
|
|
1335 |
FT_UInt32 *pchar_code )
|
|
|
1336 |
{
|
|
|
1337 |
FT_UInt gindex;
|
|
|
1338 |
|
|
|
1339 |
|
|
|
1340 |
if ( *pchar_code >= 0xFFFFU )
|
|
|
1341 |
return 0;
|
|
|
1342 |
|
|
|
1343 |
if ( cmap->flags & TT_CMAP_FLAG_UNSORTED )
|
|
|
1344 |
gindex = tt_cmap4_char_map_linear( cmap, pchar_code, 1 );
|
|
|
1345 |
else
|
|
|
1346 |
{
|
|
|
1347 |
TT_CMap4 cmap4 = (TT_CMap4)cmap;
|
|
|
1348 |
|
|
|
1349 |
|
|
|
1350 |
/* no need to search */
|
|
|
1351 |
if ( *pchar_code == cmap4->cur_charcode )
|
|
|
1352 |
{
|
|
|
1353 |
tt_cmap4_next( cmap4 );
|
|
|
1354 |
gindex = cmap4->cur_gindex;
|
|
|
1355 |
if ( gindex )
|
|
|
1356 |
*pchar_code = cmap4->cur_charcode;
|
|
|
1357 |
}
|
|
|
1358 |
else
|
|
|
1359 |
gindex = tt_cmap4_char_map_binary( cmap, pchar_code, 1 );
|
|
|
1360 |
}
|
|
|
1361 |
|
|
|
1362 |
return gindex;
|
|
|
1363 |
}
|
|
|
1364 |
|
|
|
1365 |
|
|
|
1366 |
FT_CALLBACK_DEF( FT_Error )
|
|
|
1367 |
tt_cmap4_get_info( TT_CMap cmap,
|
|
|
1368 |
TT_CMapInfo *cmap_info )
|
|
|
1369 |
{
|
|
|
1370 |
FT_Byte* p = cmap->data + 4;
|
|
|
1371 |
|
|
|
1372 |
|
|
|
1373 |
cmap_info->format = 4;
|
|
|
1374 |
cmap_info->language = (FT_ULong)TT_PEEK_USHORT( p );
|
|
|
1375 |
|
|
|
1376 |
return SFNT_Err_Ok;
|
|
|
1377 |
}
|
|
|
1378 |
|
|
|
1379 |
|
|
|
1380 |
FT_DEFINE_TT_CMAP(tt_cmap4_class_rec,
|
|
|
1381 |
sizeof ( TT_CMap4Rec ),
|
|
|
1382 |
(FT_CMap_InitFunc) tt_cmap4_init,
|
|
|
1383 |
(FT_CMap_DoneFunc) NULL,
|
|
|
1384 |
(FT_CMap_CharIndexFunc)tt_cmap4_char_index,
|
|
|
1385 |
(FT_CMap_CharNextFunc) tt_cmap4_char_next,
|
|
|
1386 |
|
|
|
1387 |
NULL, NULL, NULL, NULL, NULL
|
|
|
1388 |
,
|
|
|
1389 |
4,
|
|
|
1390 |
(TT_CMap_ValidateFunc) tt_cmap4_validate,
|
|
|
1391 |
(TT_CMap_Info_GetFunc) tt_cmap4_get_info
|
|
|
1392 |
)
|
|
|
1393 |
|
|
|
1394 |
#endif /* TT_CONFIG_CMAP_FORMAT_4 */
|
|
|
1395 |
|
|
|
1396 |
|
|
|
1397 |
/*************************************************************************/
|
|
|
1398 |
/*************************************************************************/
|
|
|
1399 |
/***** *****/
|
|
|
1400 |
/***** FORMAT 6 *****/
|
|
|
1401 |
/***** *****/
|
|
|
1402 |
/*************************************************************************/
|
|
|
1403 |
/*************************************************************************/
|
|
|
1404 |
|
|
|
1405 |
/*************************************************************************/
|
|
|
1406 |
/* */
|
|
|
1407 |
/* TABLE OVERVIEW */
|
|
|
1408 |
/* -------------- */
|
|
|
1409 |
/* */
|
|
|
1410 |
/* NAME OFFSET TYPE DESCRIPTION */
|
|
|
1411 |
/* */
|
|
|
1412 |
/* format 0 USHORT must be 4 */
|
|
|
1413 |
/* length 2 USHORT table length in bytes */
|
|
|
1414 |
/* language 4 USHORT Mac language code */
|
|
|
1415 |
/* */
|
|
|
1416 |
/* first 6 USHORT first segment code */
|
|
|
1417 |
/* count 8 USHORT segment size in chars */
|
|
|
1418 |
/* glyphIds 10 USHORT[count] glyph IDs */
|
|
|
1419 |
/* */
|
|
|
1420 |
/* A very simplified segment mapping. */
|
|
|
1421 |
/* */
|
|
|
1422 |
|
|
|
1423 |
#ifdef TT_CONFIG_CMAP_FORMAT_6
|
|
|
1424 |
|
|
|
1425 |
FT_CALLBACK_DEF( FT_Error )
|
|
|
1426 |
tt_cmap6_validate( FT_Byte* table,
|
|
|
1427 |
FT_Validator valid )
|
|
|
1428 |
{
|
|
|
1429 |
FT_Byte* p;
|
|
|
1430 |
FT_UInt length, count;
|
|
|
1431 |
|
|
|
1432 |
|
|
|
1433 |
if ( table + 10 > valid->limit )
|
|
|
1434 |
FT_INVALID_TOO_SHORT;
|
|
|
1435 |
|
|
|
1436 |
p = table + 2;
|
|
|
1437 |
length = TT_NEXT_USHORT( p );
|
|
|
1438 |
|
|
|
1439 |
p = table + 8; /* skip language and start index */
|
|
|
1440 |
count = TT_NEXT_USHORT( p );
|
|
|
1441 |
|
|
|
1442 |
if ( table + length > valid->limit || length < 10 + count * 2 )
|
|
|
1443 |
FT_INVALID_TOO_SHORT;
|
|
|
1444 |
|
|
|
1445 |
/* check glyph indices */
|
|
|
1446 |
if ( valid->level >= FT_VALIDATE_TIGHT )
|
|
|
1447 |
{
|
|
|
1448 |
FT_UInt gindex;
|
|
|
1449 |
|
|
|
1450 |
|
|
|
1451 |
for ( ; count > 0; count-- )
|
|
|
1452 |
{
|
|
|
1453 |
gindex = TT_NEXT_USHORT( p );
|
|
|
1454 |
if ( gindex >= TT_VALID_GLYPH_COUNT( valid ) )
|
|
|
1455 |
FT_INVALID_GLYPH_ID;
|
|
|
1456 |
}
|
|
|
1457 |
}
|
|
|
1458 |
|
|
|
1459 |
return SFNT_Err_Ok;
|
|
|
1460 |
}
|
|
|
1461 |
|
|
|
1462 |
|
|
|
1463 |
FT_CALLBACK_DEF( FT_UInt )
|
|
|
1464 |
tt_cmap6_char_index( TT_CMap cmap,
|
|
|
1465 |
FT_UInt32 char_code )
|
|
|
1466 |
{
|
|
|
1467 |
FT_Byte* table = cmap->data;
|
|
|
1468 |
FT_UInt result = 0;
|
|
|
1469 |
FT_Byte* p = table + 6;
|
|
|
1470 |
FT_UInt start = TT_NEXT_USHORT( p );
|
|
|
1471 |
FT_UInt count = TT_NEXT_USHORT( p );
|
|
|
1472 |
FT_UInt idx = (FT_UInt)( char_code - start );
|
|
|
1473 |
|
|
|
1474 |
|
|
|
1475 |
if ( idx < count )
|
|
|
1476 |
{
|
|
|
1477 |
p += 2 * idx;
|
|
|
1478 |
result = TT_PEEK_USHORT( p );
|
|
|
1479 |
}
|
|
|
1480 |
return result;
|
|
|
1481 |
}
|
|
|
1482 |
|
|
|
1483 |
|
|
|
1484 |
FT_CALLBACK_DEF( FT_UInt32 )
|
|
|
1485 |
tt_cmap6_char_next( TT_CMap cmap,
|
|
|
1486 |
FT_UInt32 *pchar_code )
|
|
|
1487 |
{
|
|
|
1488 |
FT_Byte* table = cmap->data;
|
|
|
1489 |
FT_UInt32 result = 0;
|
|
|
1490 |
FT_UInt32 char_code = *pchar_code + 1;
|
|
|
1491 |
FT_UInt gindex = 0;
|
|
|
1492 |
|
|
|
1493 |
FT_Byte* p = table + 6;
|
|
|
1494 |
FT_UInt start = TT_NEXT_USHORT( p );
|
|
|
1495 |
FT_UInt count = TT_NEXT_USHORT( p );
|
|
|
1496 |
FT_UInt idx;
|
|
|
1497 |
|
|
|
1498 |
|
|
|
1499 |
if ( char_code >= 0x10000UL )
|
|
|
1500 |
goto Exit;
|
|
|
1501 |
|
|
|
1502 |
if ( char_code < start )
|
|
|
1503 |
char_code = start;
|
|
|
1504 |
|
|
|
1505 |
idx = (FT_UInt)( char_code - start );
|
|
|
1506 |
p += 2 * idx;
|
|
|
1507 |
|
|
|
1508 |
for ( ; idx < count; idx++ )
|
|
|
1509 |
{
|
|
|
1510 |
gindex = TT_NEXT_USHORT( p );
|
|
|
1511 |
if ( gindex != 0 )
|
|
|
1512 |
{
|
|
|
1513 |
result = char_code;
|
|
|
1514 |
break;
|
|
|
1515 |
}
|
|
|
1516 |
char_code++;
|
|
|
1517 |
}
|
|
|
1518 |
|
|
|
1519 |
Exit:
|
|
|
1520 |
*pchar_code = result;
|
|
|
1521 |
return gindex;
|
|
|
1522 |
}
|
|
|
1523 |
|
|
|
1524 |
|
|
|
1525 |
FT_CALLBACK_DEF( FT_Error )
|
|
|
1526 |
tt_cmap6_get_info( TT_CMap cmap,
|
|
|
1527 |
TT_CMapInfo *cmap_info )
|
|
|
1528 |
{
|
|
|
1529 |
FT_Byte* p = cmap->data + 4;
|
|
|
1530 |
|
|
|
1531 |
|
|
|
1532 |
cmap_info->format = 6;
|
|
|
1533 |
cmap_info->language = (FT_ULong)TT_PEEK_USHORT( p );
|
|
|
1534 |
|
|
|
1535 |
return SFNT_Err_Ok;
|
|
|
1536 |
}
|
|
|
1537 |
|
|
|
1538 |
|
|
|
1539 |
FT_DEFINE_TT_CMAP(tt_cmap6_class_rec,
|
|
|
1540 |
sizeof ( TT_CMapRec ),
|
|
|
1541 |
|
|
|
1542 |
(FT_CMap_InitFunc) tt_cmap_init,
|
|
|
1543 |
(FT_CMap_DoneFunc) NULL,
|
|
|
1544 |
(FT_CMap_CharIndexFunc)tt_cmap6_char_index,
|
|
|
1545 |
(FT_CMap_CharNextFunc) tt_cmap6_char_next,
|
|
|
1546 |
|
|
|
1547 |
NULL, NULL, NULL, NULL, NULL
|
|
|
1548 |
,
|
|
|
1549 |
6,
|
|
|
1550 |
(TT_CMap_ValidateFunc) tt_cmap6_validate,
|
|
|
1551 |
(TT_CMap_Info_GetFunc) tt_cmap6_get_info
|
|
|
1552 |
)
|
|
|
1553 |
|
|
|
1554 |
#endif /* TT_CONFIG_CMAP_FORMAT_6 */
|
|
|
1555 |
|
|
|
1556 |
|
|
|
1557 |
/*************************************************************************/
|
|
|
1558 |
/*************************************************************************/
|
|
|
1559 |
/***** *****/
|
|
|
1560 |
/***** FORMAT 8 *****/
|
|
|
1561 |
/***** *****/
|
|
|
1562 |
/***** It is hard to completely understand what the OpenType spec *****/
|
|
|
1563 |
/***** says about this format, but here is my conclusion. *****/
|
|
|
1564 |
/***** *****/
|
|
|
1565 |
/***** The purpose of this format is to easily map UTF-16 text to *****/
|
|
|
1566 |
/***** glyph indices. Basically, the `char_code' must be in one of *****/
|
|
|
1567 |
/***** the following formats: *****/
|
|
|
1568 |
/***** *****/
|
|
|
1569 |
/***** - A 16-bit value that isn't part of the Unicode Surrogates *****/
|
|
|
1570 |
/***** Area (i.e. U+D800-U+DFFF). *****/
|
|
|
1571 |
/***** *****/
|
|
|
1572 |
/***** - A 32-bit value, made of two surrogate values, i.e.. if *****/
|
|
|
1573 |
/***** `char_code = (char_hi << 16) | char_lo', then both *****/
|
|
|
1574 |
/***** `char_hi' and `char_lo' must be in the Surrogates Area. *****/
|
|
|
1575 |
/***** Area. *****/
|
|
|
1576 |
/***** *****/
|
|
|
1577 |
/***** The `is32' table embedded in the charmap indicates whether a *****/
|
|
|
1578 |
/***** given 16-bit value is in the surrogates area or not. *****/
|
|
|
1579 |
/***** *****/
|
|
|
1580 |
/***** So, for any given `char_code', we can assert the following: *****/
|
|
|
1581 |
/***** *****/
|
|
|
1582 |
/***** If `char_hi == 0' then we must have `is32[char_lo] == 0'. *****/
|
|
|
1583 |
/***** *****/
|
|
|
1584 |
/***** If `char_hi != 0' then we must have both *****/
|
|
|
1585 |
/***** `is32[char_hi] != 0' and `is32[char_lo] != 0'. *****/
|
|
|
1586 |
/***** *****/
|
|
|
1587 |
/*************************************************************************/
|
|
|
1588 |
/*************************************************************************/
|
|
|
1589 |
|
|
|
1590 |
/*************************************************************************/
|
|
|
1591 |
/* */
|
|
|
1592 |
/* TABLE OVERVIEW */
|
|
|
1593 |
/* -------------- */
|
|
|
1594 |
/* */
|
|
|
1595 |
/* NAME OFFSET TYPE DESCRIPTION */
|
|
|
1596 |
/* */
|
|
|
1597 |
/* format 0 USHORT must be 8 */
|
|
|
1598 |
/* reserved 2 USHORT reserved */
|
|
|
1599 |
/* length 4 ULONG length in bytes */
|
|
|
1600 |
/* language 8 ULONG Mac language code */
|
|
|
1601 |
/* is32 12 BYTE[8192] 32-bitness bitmap */
|
|
|
1602 |
/* count 8204 ULONG number of groups */
|
|
|
1603 |
/* */
|
|
|
1604 |
/* This header is followed by `count' groups of the following format: */
|
|
|
1605 |
/* */
|
|
|
1606 |
/* start 0 ULONG first charcode */
|
|
|
1607 |
/* end 4 ULONG last charcode */
|
|
|
1608 |
/* startId 8 ULONG start glyph ID for the group */
|
|
|
1609 |
/* */
|
|
|
1610 |
|
|
|
1611 |
#ifdef TT_CONFIG_CMAP_FORMAT_8
|
|
|
1612 |
|
|
|
1613 |
FT_CALLBACK_DEF( FT_Error )
|
|
|
1614 |
tt_cmap8_validate( FT_Byte* table,
|
|
|
1615 |
FT_Validator valid )
|
|
|
1616 |
{
|
|
|
1617 |
FT_Byte* p = table + 4;
|
|
|
1618 |
FT_Byte* is32;
|
|
|
1619 |
FT_UInt32 length;
|
|
|
1620 |
FT_UInt32 num_groups;
|
|
|
1621 |
|
|
|
1622 |
|
|
|
1623 |
if ( table + 16 + 8192 > valid->limit )
|
|
|
1624 |
FT_INVALID_TOO_SHORT;
|
|
|
1625 |
|
|
|
1626 |
length = TT_NEXT_ULONG( p );
|
|
|
1627 |
if ( length > (FT_UInt32)( valid->limit - table ) || length < 8192 + 16 )
|
|
|
1628 |
FT_INVALID_TOO_SHORT;
|
|
|
1629 |
|
|
|
1630 |
is32 = table + 12;
|
|
|
1631 |
p = is32 + 8192; /* skip `is32' array */
|
|
|
1632 |
num_groups = TT_NEXT_ULONG( p );
|
|
|
1633 |
|
|
|
1634 |
if ( p + num_groups * 12 > valid->limit )
|
|
|
1635 |
FT_INVALID_TOO_SHORT;
|
|
|
1636 |
|
|
|
1637 |
/* check groups, they must be in increasing order */
|
|
|
1638 |
{
|
|
|
1639 |
FT_UInt32 n, start, end, start_id, count, last = 0;
|
|
|
1640 |
|
|
|
1641 |
|
|
|
1642 |
for ( n = 0; n < num_groups; n++ )
|
|
|
1643 |
{
|
|
|
1644 |
FT_UInt hi, lo;
|
|
|
1645 |
|
|
|
1646 |
|
|
|
1647 |
start = TT_NEXT_ULONG( p );
|
|
|
1648 |
end = TT_NEXT_ULONG( p );
|
|
|
1649 |
start_id = TT_NEXT_ULONG( p );
|
|
|
1650 |
|
|
|
1651 |
if ( start > end )
|
|
|
1652 |
FT_INVALID_DATA;
|
|
|
1653 |
|
|
|
1654 |
if ( n > 0 && start <= last )
|
|
|
1655 |
FT_INVALID_DATA;
|
|
|
1656 |
|
|
|
1657 |
if ( valid->level >= FT_VALIDATE_TIGHT )
|
|
|
1658 |
{
|
|
|
1659 |
if ( start_id + end - start >= TT_VALID_GLYPH_COUNT( valid ) )
|
|
|
1660 |
FT_INVALID_GLYPH_ID;
|
|
|
1661 |
|
|
|
1662 |
count = (FT_UInt32)( end - start + 1 );
|
|
|
1663 |
|
|
|
1664 |
if ( start & ~0xFFFFU )
|
|
|
1665 |
{
|
|
|
1666 |
/* start_hi != 0; check that is32[i] is 1 for each i in */
|
|
|
1667 |
/* the `hi' and `lo' of the range [start..end] */
|
|
|
1668 |
for ( ; count > 0; count--, start++ )
|
|
|
1669 |
{
|
|
|
1670 |
hi = (FT_UInt)( start >> 16 );
|
|
|
1671 |
lo = (FT_UInt)( start & 0xFFFFU );
|
|
|
1672 |
|
|
|
1673 |
if ( (is32[hi >> 3] & ( 0x80 >> ( hi & 7 ) ) ) == 0 )
|
|
|
1674 |
FT_INVALID_DATA;
|
|
|
1675 |
|
|
|
1676 |
if ( (is32[lo >> 3] & ( 0x80 >> ( lo & 7 ) ) ) == 0 )
|
|
|
1677 |
FT_INVALID_DATA;
|
|
|
1678 |
}
|
|
|
1679 |
}
|
|
|
1680 |
else
|
|
|
1681 |
{
|
|
|
1682 |
/* start_hi == 0; check that is32[i] is 0 for each i in */
|
|
|
1683 |
/* the range [start..end] */
|
|
|
1684 |
|
|
|
1685 |
/* end_hi cannot be != 0! */
|
|
|
1686 |
if ( end & ~0xFFFFU )
|
|
|
1687 |
FT_INVALID_DATA;
|
|
|
1688 |
|
|
|
1689 |
for ( ; count > 0; count--, start++ )
|
|
|
1690 |
{
|
|
|
1691 |
lo = (FT_UInt)( start & 0xFFFFU );
|
|
|
1692 |
|
|
|
1693 |
if ( (is32[lo >> 3] & ( 0x80 >> ( lo & 7 ) ) ) != 0 )
|
|
|
1694 |
FT_INVALID_DATA;
|
|
|
1695 |
}
|
|
|
1696 |
}
|
|
|
1697 |
}
|
|
|
1698 |
|
|
|
1699 |
last = end;
|
|
|
1700 |
}
|
|
|
1701 |
}
|
|
|
1702 |
|
|
|
1703 |
return SFNT_Err_Ok;
|
|
|
1704 |
}
|
|
|
1705 |
|
|
|
1706 |
|
|
|
1707 |
FT_CALLBACK_DEF( FT_UInt )
|
|
|
1708 |
tt_cmap8_char_index( TT_CMap cmap,
|
|
|
1709 |
FT_UInt32 char_code )
|
|
|
1710 |
{
|
|
|
1711 |
FT_Byte* table = cmap->data;
|
|
|
1712 |
FT_UInt result = 0;
|
|
|
1713 |
FT_Byte* p = table + 8204;
|
|
|
1714 |
FT_UInt32 num_groups = TT_NEXT_ULONG( p );
|
|
|
1715 |
FT_UInt32 start, end, start_id;
|
|
|
1716 |
|
|
|
1717 |
|
|
|
1718 |
for ( ; num_groups > 0; num_groups-- )
|
|
|
1719 |
{
|
|
|
1720 |
start = TT_NEXT_ULONG( p );
|
|
|
1721 |
end = TT_NEXT_ULONG( p );
|
|
|
1722 |
start_id = TT_NEXT_ULONG( p );
|
|
|
1723 |
|
|
|
1724 |
if ( char_code < start )
|
|
|
1725 |
break;
|
|
|
1726 |
|
|
|
1727 |
if ( char_code <= end )
|
|
|
1728 |
{
|
|
|
1729 |
result = (FT_UInt)( start_id + char_code - start );
|
|
|
1730 |
break;
|
|
|
1731 |
}
|
|
|
1732 |
}
|
|
|
1733 |
return result;
|
|
|
1734 |
}
|
|
|
1735 |
|
|
|
1736 |
|
|
|
1737 |
FT_CALLBACK_DEF( FT_UInt32 )
|
|
|
1738 |
tt_cmap8_char_next( TT_CMap cmap,
|
|
|
1739 |
FT_UInt32 *pchar_code )
|
|
|
1740 |
{
|
|
|
1741 |
FT_UInt32 result = 0;
|
|
|
1742 |
FT_UInt32 char_code = *pchar_code + 1;
|
|
|
1743 |
FT_UInt gindex = 0;
|
|
|
1744 |
FT_Byte* table = cmap->data;
|
|
|
1745 |
FT_Byte* p = table + 8204;
|
|
|
1746 |
FT_UInt32 num_groups = TT_NEXT_ULONG( p );
|
|
|
1747 |
FT_UInt32 start, end, start_id;
|
|
|
1748 |
|
|
|
1749 |
|
|
|
1750 |
p = table + 8208;
|
|
|
1751 |
|
|
|
1752 |
for ( ; num_groups > 0; num_groups-- )
|
|
|
1753 |
{
|
|
|
1754 |
start = TT_NEXT_ULONG( p );
|
|
|
1755 |
end = TT_NEXT_ULONG( p );
|
|
|
1756 |
start_id = TT_NEXT_ULONG( p );
|
|
|
1757 |
|
|
|
1758 |
if ( char_code < start )
|
|
|
1759 |
char_code = start;
|
|
|
1760 |
|
|
|
1761 |
if ( char_code <= end )
|
|
|
1762 |
{
|
|
|
1763 |
gindex = (FT_UInt)( char_code - start + start_id );
|
|
|
1764 |
if ( gindex != 0 )
|
|
|
1765 |
{
|
|
|
1766 |
result = char_code;
|
|
|
1767 |
goto Exit;
|
|
|
1768 |
}
|
|
|
1769 |
}
|
|
|
1770 |
}
|
|
|
1771 |
|
|
|
1772 |
Exit:
|
|
|
1773 |
*pchar_code = result;
|
|
|
1774 |
return gindex;
|
|
|
1775 |
}
|
|
|
1776 |
|
|
|
1777 |
|
|
|
1778 |
FT_CALLBACK_DEF( FT_Error )
|
|
|
1779 |
tt_cmap8_get_info( TT_CMap cmap,
|
|
|
1780 |
TT_CMapInfo *cmap_info )
|
|
|
1781 |
{
|
|
|
1782 |
FT_Byte* p = cmap->data + 8;
|
|
|
1783 |
|
|
|
1784 |
|
|
|
1785 |
cmap_info->format = 8;
|
|
|
1786 |
cmap_info->language = (FT_ULong)TT_PEEK_ULONG( p );
|
|
|
1787 |
|
|
|
1788 |
return SFNT_Err_Ok;
|
|
|
1789 |
}
|
|
|
1790 |
|
|
|
1791 |
|
|
|
1792 |
FT_DEFINE_TT_CMAP(tt_cmap8_class_rec,
|
|
|
1793 |
sizeof ( TT_CMapRec ),
|
|
|
1794 |
|
|
|
1795 |
(FT_CMap_InitFunc) tt_cmap_init,
|
|
|
1796 |
(FT_CMap_DoneFunc) NULL,
|
|
|
1797 |
(FT_CMap_CharIndexFunc)tt_cmap8_char_index,
|
|
|
1798 |
(FT_CMap_CharNextFunc) tt_cmap8_char_next,
|
|
|
1799 |
|
|
|
1800 |
NULL, NULL, NULL, NULL, NULL
|
|
|
1801 |
,
|
|
|
1802 |
8,
|
|
|
1803 |
(TT_CMap_ValidateFunc) tt_cmap8_validate,
|
|
|
1804 |
(TT_CMap_Info_GetFunc) tt_cmap8_get_info
|
|
|
1805 |
)
|
|
|
1806 |
|
|
|
1807 |
#endif /* TT_CONFIG_CMAP_FORMAT_8 */
|
|
|
1808 |
|
|
|
1809 |
|
|
|
1810 |
/*************************************************************************/
|
|
|
1811 |
/*************************************************************************/
|
|
|
1812 |
/***** *****/
|
|
|
1813 |
/***** FORMAT 10 *****/
|
|
|
1814 |
/***** *****/
|
|
|
1815 |
/*************************************************************************/
|
|
|
1816 |
/*************************************************************************/
|
|
|
1817 |
|
|
|
1818 |
/*************************************************************************/
|
|
|
1819 |
/* */
|
|
|
1820 |
/* TABLE OVERVIEW */
|
|
|
1821 |
/* -------------- */
|
|
|
1822 |
/* */
|
|
|
1823 |
/* NAME OFFSET TYPE DESCRIPTION */
|
|
|
1824 |
/* */
|
|
|
1825 |
/* format 0 USHORT must be 10 */
|
|
|
1826 |
/* reserved 2 USHORT reserved */
|
|
|
1827 |
/* length 4 ULONG length in bytes */
|
|
|
1828 |
/* language 8 ULONG Mac language code */
|
|
|
1829 |
/* */
|
|
|
1830 |
/* start 12 ULONG first char in range */
|
|
|
1831 |
/* count 16 ULONG number of chars in range */
|
|
|
1832 |
/* glyphIds 20 USHORT[count] glyph indices covered */
|
|
|
1833 |
/* */
|
|
|
1834 |
|
|
|
1835 |
#ifdef TT_CONFIG_CMAP_FORMAT_10
|
|
|
1836 |
|
|
|
1837 |
FT_CALLBACK_DEF( FT_Error )
|
|
|
1838 |
tt_cmap10_validate( FT_Byte* table,
|
|
|
1839 |
FT_Validator valid )
|
|
|
1840 |
{
|
|
|
1841 |
FT_Byte* p = table + 4;
|
|
|
1842 |
FT_ULong length, count;
|
|
|
1843 |
|
|
|
1844 |
|
|
|
1845 |
if ( table + 20 > valid->limit )
|
|
|
1846 |
FT_INVALID_TOO_SHORT;
|
|
|
1847 |
|
|
|
1848 |
length = TT_NEXT_ULONG( p );
|
|
|
1849 |
p = table + 16;
|
|
|
1850 |
count = TT_NEXT_ULONG( p );
|
|
|
1851 |
|
|
|
1852 |
if ( length > (FT_ULong)( valid->limit - table ) ||
|
|
|
1853 |
length < 20 + count * 2 )
|
|
|
1854 |
FT_INVALID_TOO_SHORT;
|
|
|
1855 |
|
|
|
1856 |
/* check glyph indices */
|
|
|
1857 |
if ( valid->level >= FT_VALIDATE_TIGHT )
|
|
|
1858 |
{
|
|
|
1859 |
FT_UInt gindex;
|
|
|
1860 |
|
|
|
1861 |
|
|
|
1862 |
for ( ; count > 0; count-- )
|
|
|
1863 |
{
|
|
|
1864 |
gindex = TT_NEXT_USHORT( p );
|
|
|
1865 |
if ( gindex >= TT_VALID_GLYPH_COUNT( valid ) )
|
|
|
1866 |
FT_INVALID_GLYPH_ID;
|
|
|
1867 |
}
|
|
|
1868 |
}
|
|
|
1869 |
|
|
|
1870 |
return SFNT_Err_Ok;
|
|
|
1871 |
}
|
|
|
1872 |
|
|
|
1873 |
|
|
|
1874 |
FT_CALLBACK_DEF( FT_UInt )
|
|
|
1875 |
tt_cmap10_char_index( TT_CMap cmap,
|
|
|
1876 |
FT_UInt32 char_code )
|
|
|
1877 |
{
|
|
|
1878 |
FT_Byte* table = cmap->data;
|
|
|
1879 |
FT_UInt result = 0;
|
|
|
1880 |
FT_Byte* p = table + 12;
|
|
|
1881 |
FT_UInt32 start = TT_NEXT_ULONG( p );
|
|
|
1882 |
FT_UInt32 count = TT_NEXT_ULONG( p );
|
|
|
1883 |
FT_UInt32 idx = (FT_ULong)( char_code - start );
|
|
|
1884 |
|
|
|
1885 |
|
|
|
1886 |
if ( idx < count )
|
|
|
1887 |
{
|
|
|
1888 |
p += 2 * idx;
|
|
|
1889 |
result = TT_PEEK_USHORT( p );
|
|
|
1890 |
}
|
|
|
1891 |
return result;
|
|
|
1892 |
}
|
|
|
1893 |
|
|
|
1894 |
|
|
|
1895 |
FT_CALLBACK_DEF( FT_UInt32 )
|
|
|
1896 |
tt_cmap10_char_next( TT_CMap cmap,
|
|
|
1897 |
FT_UInt32 *pchar_code )
|
|
|
1898 |
{
|
|
|
1899 |
FT_Byte* table = cmap->data;
|
|
|
1900 |
FT_UInt32 char_code = *pchar_code + 1;
|
|
|
1901 |
FT_UInt gindex = 0;
|
|
|
1902 |
FT_Byte* p = table + 12;
|
|
|
1903 |
FT_UInt32 start = TT_NEXT_ULONG( p );
|
|
|
1904 |
FT_UInt32 count = TT_NEXT_ULONG( p );
|
|
|
1905 |
FT_UInt32 idx;
|
|
|
1906 |
|
|
|
1907 |
|
|
|
1908 |
if ( char_code < start )
|
|
|
1909 |
char_code = start;
|
|
|
1910 |
|
|
|
1911 |
idx = (FT_UInt32)( char_code - start );
|
|
|
1912 |
p += 2 * idx;
|
|
|
1913 |
|
|
|
1914 |
for ( ; idx < count; idx++ )
|
|
|
1915 |
{
|
|
|
1916 |
gindex = TT_NEXT_USHORT( p );
|
|
|
1917 |
if ( gindex != 0 )
|
|
|
1918 |
break;
|
|
|
1919 |
char_code++;
|
|
|
1920 |
}
|
|
|
1921 |
|
|
|
1922 |
*pchar_code = char_code;
|
|
|
1923 |
return gindex;
|
|
|
1924 |
}
|
|
|
1925 |
|
|
|
1926 |
|
|
|
1927 |
FT_CALLBACK_DEF( FT_Error )
|
|
|
1928 |
tt_cmap10_get_info( TT_CMap cmap,
|
|
|
1929 |
TT_CMapInfo *cmap_info )
|
|
|
1930 |
{
|
|
|
1931 |
FT_Byte* p = cmap->data + 8;
|
|
|
1932 |
|
|
|
1933 |
|
|
|
1934 |
cmap_info->format = 10;
|
|
|
1935 |
cmap_info->language = (FT_ULong)TT_PEEK_ULONG( p );
|
|
|
1936 |
|
|
|
1937 |
return SFNT_Err_Ok;
|
|
|
1938 |
}
|
|
|
1939 |
|
|
|
1940 |
|
|
|
1941 |
FT_DEFINE_TT_CMAP(tt_cmap10_class_rec,
|
|
|
1942 |
sizeof ( TT_CMapRec ),
|
|
|
1943 |
|
|
|
1944 |
(FT_CMap_InitFunc) tt_cmap_init,
|
|
|
1945 |
(FT_CMap_DoneFunc) NULL,
|
|
|
1946 |
(FT_CMap_CharIndexFunc)tt_cmap10_char_index,
|
|
|
1947 |
(FT_CMap_CharNextFunc) tt_cmap10_char_next,
|
|
|
1948 |
|
|
|
1949 |
NULL, NULL, NULL, NULL, NULL
|
|
|
1950 |
,
|
|
|
1951 |
10,
|
|
|
1952 |
(TT_CMap_ValidateFunc) tt_cmap10_validate,
|
|
|
1953 |
(TT_CMap_Info_GetFunc) tt_cmap10_get_info
|
|
|
1954 |
)
|
|
|
1955 |
|
|
|
1956 |
#endif /* TT_CONFIG_CMAP_FORMAT_10 */
|
|
|
1957 |
|
|
|
1958 |
|
|
|
1959 |
/*************************************************************************/
|
|
|
1960 |
/*************************************************************************/
|
|
|
1961 |
/***** *****/
|
|
|
1962 |
/***** FORMAT 12 *****/
|
|
|
1963 |
/***** *****/
|
|
|
1964 |
/*************************************************************************/
|
|
|
1965 |
/*************************************************************************/
|
|
|
1966 |
|
|
|
1967 |
/*************************************************************************/
|
|
|
1968 |
/* */
|
|
|
1969 |
/* TABLE OVERVIEW */
|
|
|
1970 |
/* -------------- */
|
|
|
1971 |
/* */
|
|
|
1972 |
/* NAME OFFSET TYPE DESCRIPTION */
|
|
|
1973 |
/* */
|
|
|
1974 |
/* format 0 USHORT must be 12 */
|
|
|
1975 |
/* reserved 2 USHORT reserved */
|
|
|
1976 |
/* length 4 ULONG length in bytes */
|
|
|
1977 |
/* language 8 ULONG Mac language code */
|
|
|
1978 |
/* count 12 ULONG number of groups */
|
|
|
1979 |
/* 16 */
|
|
|
1980 |
/* */
|
|
|
1981 |
/* This header is followed by `count' groups of the following format: */
|
|
|
1982 |
/* */
|
|
|
1983 |
/* start 0 ULONG first charcode */
|
|
|
1984 |
/* end 4 ULONG last charcode */
|
|
|
1985 |
/* startId 8 ULONG start glyph ID for the group */
|
|
|
1986 |
/* */
|
|
|
1987 |
|
|
|
1988 |
#ifdef TT_CONFIG_CMAP_FORMAT_12
|
|
|
1989 |
|
|
|
1990 |
typedef struct TT_CMap12Rec_
|
|
|
1991 |
{
|
|
|
1992 |
TT_CMapRec cmap;
|
|
|
1993 |
FT_Bool valid;
|
|
|
1994 |
FT_ULong cur_charcode;
|
|
|
1995 |
FT_UInt cur_gindex;
|
|
|
1996 |
FT_ULong cur_group;
|
|
|
1997 |
FT_ULong num_groups;
|
|
|
1998 |
|
|
|
1999 |
} TT_CMap12Rec, *TT_CMap12;
|
|
|
2000 |
|
|
|
2001 |
|
|
|
2002 |
FT_CALLBACK_DEF( FT_Error )
|
|
|
2003 |
tt_cmap12_init( TT_CMap12 cmap,
|
|
|
2004 |
FT_Byte* table )
|
|
|
2005 |
{
|
|
|
2006 |
cmap->cmap.data = table;
|
|
|
2007 |
|
|
|
2008 |
table += 12;
|
|
|
2009 |
cmap->num_groups = FT_PEEK_ULONG( table );
|
|
|
2010 |
|
|
|
2011 |
cmap->valid = 0;
|
|
|
2012 |
|
|
|
2013 |
return SFNT_Err_Ok;
|
|
|
2014 |
}
|
|
|
2015 |
|
|
|
2016 |
|
|
|
2017 |
FT_CALLBACK_DEF( FT_Error )
|
|
|
2018 |
tt_cmap12_validate( FT_Byte* table,
|
|
|
2019 |
FT_Validator valid )
|
|
|
2020 |
{
|
|
|
2021 |
FT_Byte* p;
|
|
|
2022 |
FT_ULong length;
|
|
|
2023 |
FT_ULong num_groups;
|
|
|
2024 |
|
|
|
2025 |
|
|
|
2026 |
if ( table + 16 > valid->limit )
|
|
|
2027 |
FT_INVALID_TOO_SHORT;
|
|
|
2028 |
|
|
|
2029 |
p = table + 4;
|
|
|
2030 |
length = TT_NEXT_ULONG( p );
|
|
|
2031 |
|
|
|
2032 |
p = table + 12;
|
|
|
2033 |
num_groups = TT_NEXT_ULONG( p );
|
|
|
2034 |
|
|
|
2035 |
if ( length > (FT_ULong)( valid->limit - table ) ||
|
|
|
2036 |
length < 16 + 12 * num_groups )
|
|
|
2037 |
FT_INVALID_TOO_SHORT;
|
|
|
2038 |
|
|
|
2039 |
/* check groups, they must be in increasing order */
|
|
|
2040 |
{
|
|
|
2041 |
FT_ULong n, start, end, start_id, last = 0;
|
|
|
2042 |
|
|
|
2043 |
|
|
|
2044 |
for ( n = 0; n < num_groups; n++ )
|
|
|
2045 |
{
|
|
|
2046 |
start = TT_NEXT_ULONG( p );
|
|
|
2047 |
end = TT_NEXT_ULONG( p );
|
|
|
2048 |
start_id = TT_NEXT_ULONG( p );
|
|
|
2049 |
|
|
|
2050 |
if ( start > end )
|
|
|
2051 |
FT_INVALID_DATA;
|
|
|
2052 |
|
|
|
2053 |
if ( n > 0 && start <= last )
|
|
|
2054 |
FT_INVALID_DATA;
|
|
|
2055 |
|
|
|
2056 |
if ( valid->level >= FT_VALIDATE_TIGHT )
|
|
|
2057 |
{
|
|
|
2058 |
if ( start_id + end - start >= TT_VALID_GLYPH_COUNT( valid ) )
|
|
|
2059 |
FT_INVALID_GLYPH_ID;
|
|
|
2060 |
}
|
|
|
2061 |
|
|
|
2062 |
last = end;
|
|
|
2063 |
}
|
|
|
2064 |
}
|
|
|
2065 |
|
|
|
2066 |
return SFNT_Err_Ok;
|
|
|
2067 |
}
|
|
|
2068 |
|
|
|
2069 |
|
|
|
2070 |
/* search the index of the charcode next to cmap->cur_charcode */
|
|
|
2071 |
/* cmap->cur_group should be set up properly by caller */
|
|
|
2072 |
/* */
|
|
|
2073 |
static void
|
|
|
2074 |
tt_cmap12_next( TT_CMap12 cmap )
|
|
|
2075 |
{
|
|
|
2076 |
FT_Byte* p;
|
|
|
2077 |
FT_ULong start, end, start_id, char_code;
|
|
|
2078 |
FT_ULong n;
|
|
|
2079 |
FT_UInt gindex;
|
|
|
2080 |
|
|
|
2081 |
|
|
|
2082 |
if ( cmap->cur_charcode >= 0xFFFFFFFFUL )
|
|
|
2083 |
goto Fail;
|
|
|
2084 |
|
|
|
2085 |
char_code = cmap->cur_charcode + 1;
|
|
|
2086 |
|
|
|
2087 |
n = cmap->cur_group;
|
|
|
2088 |
|
|
|
2089 |
for ( n = cmap->cur_group; n < cmap->num_groups; n++ )
|
|
|
2090 |
{
|
|
|
2091 |
p = cmap->cmap.data + 16 + 12 * n;
|
|
|
2092 |
start = TT_NEXT_ULONG( p );
|
|
|
2093 |
end = TT_NEXT_ULONG( p );
|
|
|
2094 |
start_id = TT_PEEK_ULONG( p );
|
|
|
2095 |
|
|
|
2096 |
if ( char_code < start )
|
|
|
2097 |
char_code = start;
|
|
|
2098 |
|
|
|
2099 |
for ( ; char_code <= end; char_code++ )
|
|
|
2100 |
{
|
|
|
2101 |
gindex = (FT_UInt)( start_id + char_code - start );
|
|
|
2102 |
|
|
|
2103 |
if ( gindex )
|
|
|
2104 |
{
|
|
|
2105 |
cmap->cur_charcode = char_code;;
|
|
|
2106 |
cmap->cur_gindex = gindex;
|
|
|
2107 |
cmap->cur_group = n;
|
|
|
2108 |
|
|
|
2109 |
return;
|
|
|
2110 |
}
|
|
|
2111 |
}
|
|
|
2112 |
}
|
|
|
2113 |
|
|
|
2114 |
Fail:
|
|
|
2115 |
cmap->valid = 0;
|
|
|
2116 |
}
|
|
|
2117 |
|
|
|
2118 |
|
|
|
2119 |
static FT_UInt
|
|
|
2120 |
tt_cmap12_char_map_binary( TT_CMap cmap,
|
|
|
2121 |
FT_UInt32* pchar_code,
|
|
|
2122 |
FT_Bool next )
|
|
|
2123 |
{
|
|
|
2124 |
FT_UInt gindex = 0;
|
|
|
2125 |
FT_Byte* p = cmap->data + 12;
|
|
|
2126 |
FT_UInt32 num_groups = TT_PEEK_ULONG( p );
|
|
|
2127 |
FT_UInt32 char_code = *pchar_code;
|
|
|
2128 |
FT_UInt32 start, end, start_id;
|
|
|
2129 |
FT_UInt32 max, min, mid;
|
|
|
2130 |
|
|
|
2131 |
|
|
|
2132 |
if ( !num_groups )
|
|
|
2133 |
return 0;
|
|
|
2134 |
|
|
|
2135 |
/* make compiler happy */
|
|
|
2136 |
mid = num_groups;
|
|
|
2137 |
end = 0xFFFFFFFFUL;
|
|
|
2138 |
|
|
|
2139 |
if ( next )
|
|
|
2140 |
char_code++;
|
|
|
2141 |
|
|
|
2142 |
min = 0;
|
|
|
2143 |
max = num_groups;
|
|
|
2144 |
|
|
|
2145 |
/* binary search */
|
|
|
2146 |
while ( min < max )
|
|
|
2147 |
{
|
|
|
2148 |
mid = ( min + max ) >> 1;
|
|
|
2149 |
p = cmap->data + 16 + 12 * mid;
|
|
|
2150 |
|
|
|
2151 |
start = TT_NEXT_ULONG( p );
|
|
|
2152 |
end = TT_NEXT_ULONG( p );
|
|
|
2153 |
|
|
|
2154 |
if ( char_code < start )
|
|
|
2155 |
max = mid;
|
|
|
2156 |
else if ( char_code > end )
|
|
|
2157 |
min = mid + 1;
|
|
|
2158 |
else
|
|
|
2159 |
{
|
|
|
2160 |
start_id = TT_PEEK_ULONG( p );
|
|
|
2161 |
gindex = (FT_UInt)( start_id + char_code - start );
|
|
|
2162 |
|
|
|
2163 |
break;
|
|
|
2164 |
}
|
|
|
2165 |
}
|
|
|
2166 |
|
|
|
2167 |
if ( next )
|
|
|
2168 |
{
|
|
|
2169 |
TT_CMap12 cmap12 = (TT_CMap12)cmap;
|
|
|
2170 |
|
|
|
2171 |
|
|
|
2172 |
/* if `char_code' is not in any group, then `mid' is */
|
|
|
2173 |
/* the group nearest to `char_code' */
|
|
|
2174 |
/* */
|
|
|
2175 |
|
|
|
2176 |
if ( char_code > end )
|
|
|
2177 |
{
|
|
|
2178 |
mid++;
|
|
|
2179 |
if ( mid == num_groups )
|
|
|
2180 |
return 0;
|
|
|
2181 |
}
|
|
|
2182 |
|
|
|
2183 |
cmap12->valid = 1;
|
|
|
2184 |
cmap12->cur_charcode = char_code;
|
|
|
2185 |
cmap12->cur_group = mid;
|
|
|
2186 |
|
|
|
2187 |
if ( !gindex )
|
|
|
2188 |
{
|
|
|
2189 |
tt_cmap12_next( cmap12 );
|
|
|
2190 |
|
|
|
2191 |
if ( cmap12->valid )
|
|
|
2192 |
gindex = cmap12->cur_gindex;
|
|
|
2193 |
}
|
|
|
2194 |
else
|
|
|
2195 |
cmap12->cur_gindex = gindex;
|
|
|
2196 |
|
|
|
2197 |
if ( gindex )
|
|
|
2198 |
*pchar_code = cmap12->cur_charcode;
|
|
|
2199 |
}
|
|
|
2200 |
|
|
|
2201 |
return gindex;
|
|
|
2202 |
}
|
|
|
2203 |
|
|
|
2204 |
|
|
|
2205 |
FT_CALLBACK_DEF( FT_UInt )
|
|
|
2206 |
tt_cmap12_char_index( TT_CMap cmap,
|
|
|
2207 |
FT_UInt32 char_code )
|
|
|
2208 |
{
|
|
|
2209 |
return tt_cmap12_char_map_binary( cmap, &char_code, 0 );
|
|
|
2210 |
}
|
|
|
2211 |
|
|
|
2212 |
|
|
|
2213 |
FT_CALLBACK_DEF( FT_UInt32 )
|
|
|
2214 |
tt_cmap12_char_next( TT_CMap cmap,
|
|
|
2215 |
FT_UInt32 *pchar_code )
|
|
|
2216 |
{
|
|
|
2217 |
TT_CMap12 cmap12 = (TT_CMap12)cmap;
|
|
|
2218 |
FT_ULong gindex;
|
|
|
2219 |
|
|
|
2220 |
|
|
|
2221 |
if ( cmap12->cur_charcode >= 0xFFFFFFFFUL )
|
|
|
2222 |
return 0;
|
|
|
2223 |
|
|
|
2224 |
/* no need to search */
|
|
|
2225 |
if ( cmap12->valid && cmap12->cur_charcode == *pchar_code )
|
|
|
2226 |
{
|
|
|
2227 |
tt_cmap12_next( cmap12 );
|
|
|
2228 |
if ( cmap12->valid )
|
|
|
2229 |
{
|
|
|
2230 |
gindex = cmap12->cur_gindex;
|
|
|
2231 |
|
|
|
2232 |
/* XXX: check cur_charcode overflow is expected */
|
|
|
2233 |
if ( gindex )
|
|
|
2234 |
*pchar_code = (FT_UInt32)cmap12->cur_charcode;
|
|
|
2235 |
}
|
|
|
2236 |
else
|
|
|
2237 |
gindex = 0;
|
|
|
2238 |
}
|
|
|
2239 |
else
|
|
|
2240 |
gindex = tt_cmap12_char_map_binary( cmap, pchar_code, 1 );
|
|
|
2241 |
|
|
|
2242 |
/* XXX: check gindex overflow is expected */
|
|
|
2243 |
return (FT_UInt32)gindex;
|
|
|
2244 |
}
|
|
|
2245 |
|
|
|
2246 |
|
|
|
2247 |
FT_CALLBACK_DEF( FT_Error )
|
|
|
2248 |
tt_cmap12_get_info( TT_CMap cmap,
|
|
|
2249 |
TT_CMapInfo *cmap_info )
|
|
|
2250 |
{
|
|
|
2251 |
FT_Byte* p = cmap->data + 8;
|
|
|
2252 |
|
|
|
2253 |
|
|
|
2254 |
cmap_info->format = 12;
|
|
|
2255 |
cmap_info->language = (FT_ULong)TT_PEEK_ULONG( p );
|
|
|
2256 |
|
|
|
2257 |
return SFNT_Err_Ok;
|
|
|
2258 |
}
|
|
|
2259 |
|
|
|
2260 |
|
|
|
2261 |
FT_DEFINE_TT_CMAP(tt_cmap12_class_rec,
|
|
|
2262 |
sizeof ( TT_CMap12Rec ),
|
|
|
2263 |
|
|
|
2264 |
(FT_CMap_InitFunc) tt_cmap12_init,
|
|
|
2265 |
(FT_CMap_DoneFunc) NULL,
|
|
|
2266 |
(FT_CMap_CharIndexFunc)tt_cmap12_char_index,
|
|
|
2267 |
(FT_CMap_CharNextFunc) tt_cmap12_char_next,
|
|
|
2268 |
|
|
|
2269 |
NULL, NULL, NULL, NULL, NULL
|
|
|
2270 |
,
|
|
|
2271 |
12,
|
|
|
2272 |
(TT_CMap_ValidateFunc) tt_cmap12_validate,
|
|
|
2273 |
(TT_CMap_Info_GetFunc) tt_cmap12_get_info
|
|
|
2274 |
)
|
|
|
2275 |
|
|
|
2276 |
#endif /* TT_CONFIG_CMAP_FORMAT_12 */
|
|
|
2277 |
|
|
|
2278 |
|
|
|
2279 |
/*************************************************************************/
|
|
|
2280 |
/*************************************************************************/
|
|
|
2281 |
/***** *****/
|
|
|
2282 |
/***** FORMAT 13 *****/
|
|
|
2283 |
/***** *****/
|
|
|
2284 |
/*************************************************************************/
|
|
|
2285 |
/*************************************************************************/
|
|
|
2286 |
|
|
|
2287 |
/*************************************************************************/
|
|
|
2288 |
/* */
|
|
|
2289 |
/* TABLE OVERVIEW */
|
|
|
2290 |
/* -------------- */
|
|
|
2291 |
/* */
|
|
|
2292 |
/* NAME OFFSET TYPE DESCRIPTION */
|
|
|
2293 |
/* */
|
|
|
2294 |
/* format 0 USHORT must be 13 */
|
|
|
2295 |
/* reserved 2 USHORT reserved */
|
|
|
2296 |
/* length 4 ULONG length in bytes */
|
|
|
2297 |
/* language 8 ULONG Mac language code */
|
|
|
2298 |
/* count 12 ULONG number of groups */
|
|
|
2299 |
/* 16 */
|
|
|
2300 |
/* */
|
|
|
2301 |
/* This header is followed by `count' groups of the following format: */
|
|
|
2302 |
/* */
|
|
|
2303 |
/* start 0 ULONG first charcode */
|
|
|
2304 |
/* end 4 ULONG last charcode */
|
|
|
2305 |
/* glyphId 8 ULONG glyph ID for the whole group */
|
|
|
2306 |
/* */
|
|
|
2307 |
|
|
|
2308 |
#ifdef TT_CONFIG_CMAP_FORMAT_13
|
|
|
2309 |
|
|
|
2310 |
typedef struct TT_CMap13Rec_
|
|
|
2311 |
{
|
|
|
2312 |
TT_CMapRec cmap;
|
|
|
2313 |
FT_Bool valid;
|
|
|
2314 |
FT_ULong cur_charcode;
|
|
|
2315 |
FT_UInt cur_gindex;
|
|
|
2316 |
FT_ULong cur_group;
|
|
|
2317 |
FT_ULong num_groups;
|
|
|
2318 |
|
|
|
2319 |
} TT_CMap13Rec, *TT_CMap13;
|
|
|
2320 |
|
|
|
2321 |
|
|
|
2322 |
FT_CALLBACK_DEF( FT_Error )
|
|
|
2323 |
tt_cmap13_init( TT_CMap13 cmap,
|
|
|
2324 |
FT_Byte* table )
|
|
|
2325 |
{
|
|
|
2326 |
cmap->cmap.data = table;
|
|
|
2327 |
|
|
|
2328 |
table += 12;
|
|
|
2329 |
cmap->num_groups = FT_PEEK_ULONG( table );
|
|
|
2330 |
|
|
|
2331 |
cmap->valid = 0;
|
|
|
2332 |
|
|
|
2333 |
return SFNT_Err_Ok;
|
|
|
2334 |
}
|
|
|
2335 |
|
|
|
2336 |
|
|
|
2337 |
FT_CALLBACK_DEF( FT_Error )
|
|
|
2338 |
tt_cmap13_validate( FT_Byte* table,
|
|
|
2339 |
FT_Validator valid )
|
|
|
2340 |
{
|
|
|
2341 |
FT_Byte* p;
|
|
|
2342 |
FT_ULong length;
|
|
|
2343 |
FT_ULong num_groups;
|
|
|
2344 |
|
|
|
2345 |
|
|
|
2346 |
if ( table + 16 > valid->limit )
|
|
|
2347 |
FT_INVALID_TOO_SHORT;
|
|
|
2348 |
|
|
|
2349 |
p = table + 4;
|
|
|
2350 |
length = TT_NEXT_ULONG( p );
|
|
|
2351 |
|
|
|
2352 |
p = table + 12;
|
|
|
2353 |
num_groups = TT_NEXT_ULONG( p );
|
|
|
2354 |
|
|
|
2355 |
if ( length > (FT_ULong)( valid->limit - table ) ||
|
|
|
2356 |
length < 16 + 12 * num_groups )
|
|
|
2357 |
FT_INVALID_TOO_SHORT;
|
|
|
2358 |
|
|
|
2359 |
/* check groups, they must be in increasing order */
|
|
|
2360 |
{
|
|
|
2361 |
FT_ULong n, start, end, glyph_id, last = 0;
|
|
|
2362 |
|
|
|
2363 |
|
|
|
2364 |
for ( n = 0; n < num_groups; n++ )
|
|
|
2365 |
{
|
|
|
2366 |
start = TT_NEXT_ULONG( p );
|
|
|
2367 |
end = TT_NEXT_ULONG( p );
|
|
|
2368 |
glyph_id = TT_NEXT_ULONG( p );
|
|
|
2369 |
|
|
|
2370 |
if ( start > end )
|
|
|
2371 |
FT_INVALID_DATA;
|
|
|
2372 |
|
|
|
2373 |
if ( n > 0 && start <= last )
|
|
|
2374 |
FT_INVALID_DATA;
|
|
|
2375 |
|
|
|
2376 |
if ( valid->level >= FT_VALIDATE_TIGHT )
|
|
|
2377 |
{
|
|
|
2378 |
if ( glyph_id >= TT_VALID_GLYPH_COUNT( valid ) )
|
|
|
2379 |
FT_INVALID_GLYPH_ID;
|
|
|
2380 |
}
|
|
|
2381 |
|
|
|
2382 |
last = end;
|
|
|
2383 |
}
|
|
|
2384 |
}
|
|
|
2385 |
|
|
|
2386 |
return SFNT_Err_Ok;
|
|
|
2387 |
}
|
|
|
2388 |
|
|
|
2389 |
|
|
|
2390 |
/* search the index of the charcode next to cmap->cur_charcode */
|
|
|
2391 |
/* cmap->cur_group should be set up properly by caller */
|
|
|
2392 |
/* */
|
|
|
2393 |
static void
|
|
|
2394 |
tt_cmap13_next( TT_CMap13 cmap )
|
|
|
2395 |
{
|
|
|
2396 |
FT_Byte* p;
|
|
|
2397 |
FT_ULong start, end, glyph_id, char_code;
|
|
|
2398 |
FT_ULong n;
|
|
|
2399 |
FT_UInt gindex;
|
|
|
2400 |
|
|
|
2401 |
|
|
|
2402 |
if ( cmap->cur_charcode >= 0xFFFFFFFFUL )
|
|
|
2403 |
goto Fail;
|
|
|
2404 |
|
|
|
2405 |
char_code = cmap->cur_charcode + 1;
|
|
|
2406 |
|
|
|
2407 |
n = cmap->cur_group;
|
|
|
2408 |
|
|
|
2409 |
for ( n = cmap->cur_group; n < cmap->num_groups; n++ )
|
|
|
2410 |
{
|
|
|
2411 |
p = cmap->cmap.data + 16 + 12 * n;
|
|
|
2412 |
start = TT_NEXT_ULONG( p );
|
|
|
2413 |
end = TT_NEXT_ULONG( p );
|
|
|
2414 |
glyph_id = TT_PEEK_ULONG( p );
|
|
|
2415 |
|
|
|
2416 |
if ( char_code < start )
|
|
|
2417 |
char_code = start;
|
|
|
2418 |
|
|
|
2419 |
if ( char_code <= end )
|
|
|
2420 |
{
|
|
|
2421 |
gindex = (FT_UInt)glyph_id;
|
|
|
2422 |
|
|
|
2423 |
if ( gindex )
|
|
|
2424 |
{
|
|
|
2425 |
cmap->cur_charcode = char_code;;
|
|
|
2426 |
cmap->cur_gindex = gindex;
|
|
|
2427 |
cmap->cur_group = n;
|
|
|
2428 |
|
|
|
2429 |
return;
|
|
|
2430 |
}
|
|
|
2431 |
}
|
|
|
2432 |
}
|
|
|
2433 |
|
|
|
2434 |
Fail:
|
|
|
2435 |
cmap->valid = 0;
|
|
|
2436 |
}
|
|
|
2437 |
|
|
|
2438 |
|
|
|
2439 |
static FT_UInt
|
|
|
2440 |
tt_cmap13_char_map_binary( TT_CMap cmap,
|
|
|
2441 |
FT_UInt32* pchar_code,
|
|
|
2442 |
FT_Bool next )
|
|
|
2443 |
{
|
|
|
2444 |
FT_UInt gindex = 0;
|
|
|
2445 |
FT_Byte* p = cmap->data + 12;
|
|
|
2446 |
FT_UInt32 num_groups = TT_PEEK_ULONG( p );
|
|
|
2447 |
FT_UInt32 char_code = *pchar_code;
|
|
|
2448 |
FT_UInt32 start, end;
|
|
|
2449 |
FT_UInt32 max, min, mid;
|
|
|
2450 |
|
|
|
2451 |
|
|
|
2452 |
if ( !num_groups )
|
|
|
2453 |
return 0;
|
|
|
2454 |
|
|
|
2455 |
/* make compiler happy */
|
|
|
2456 |
mid = num_groups;
|
|
|
2457 |
end = 0xFFFFFFFFUL;
|
|
|
2458 |
|
|
|
2459 |
if ( next )
|
|
|
2460 |
char_code++;
|
|
|
2461 |
|
|
|
2462 |
min = 0;
|
|
|
2463 |
max = num_groups;
|
|
|
2464 |
|
|
|
2465 |
/* binary search */
|
|
|
2466 |
while ( min < max )
|
|
|
2467 |
{
|
|
|
2468 |
mid = ( min + max ) >> 1;
|
|
|
2469 |
p = cmap->data + 16 + 12 * mid;
|
|
|
2470 |
|
|
|
2471 |
start = TT_NEXT_ULONG( p );
|
|
|
2472 |
end = TT_NEXT_ULONG( p );
|
|
|
2473 |
|
|
|
2474 |
if ( char_code < start )
|
|
|
2475 |
max = mid;
|
|
|
2476 |
else if ( char_code > end )
|
|
|
2477 |
min = mid + 1;
|
|
|
2478 |
else
|
|
|
2479 |
{
|
|
|
2480 |
gindex = (FT_UInt)TT_PEEK_ULONG( p );
|
|
|
2481 |
|
|
|
2482 |
break;
|
|
|
2483 |
}
|
|
|
2484 |
}
|
|
|
2485 |
|
|
|
2486 |
if ( next )
|
|
|
2487 |
{
|
|
|
2488 |
TT_CMap13 cmap13 = (TT_CMap13)cmap;
|
|
|
2489 |
|
|
|
2490 |
|
|
|
2491 |
/* if `char_code' is not in any group, then `mid' is */
|
|
|
2492 |
/* the group nearest to `char_code' */
|
|
|
2493 |
/* */
|
|
|
2494 |
|
|
|
2495 |
if ( char_code > end )
|
|
|
2496 |
{
|
|
|
2497 |
mid++;
|
|
|
2498 |
if ( mid == num_groups )
|
|
|
2499 |
return 0;
|
|
|
2500 |
}
|
|
|
2501 |
|
|
|
2502 |
cmap13->valid = 1;
|
|
|
2503 |
cmap13->cur_charcode = char_code;
|
|
|
2504 |
cmap13->cur_group = mid;
|
|
|
2505 |
|
|
|
2506 |
if ( !gindex )
|
|
|
2507 |
{
|
|
|
2508 |
tt_cmap13_next( cmap13 );
|
|
|
2509 |
|
|
|
2510 |
if ( cmap13->valid )
|
|
|
2511 |
gindex = cmap13->cur_gindex;
|
|
|
2512 |
}
|
|
|
2513 |
else
|
|
|
2514 |
cmap13->cur_gindex = gindex;
|
|
|
2515 |
|
|
|
2516 |
if ( gindex )
|
|
|
2517 |
*pchar_code = cmap13->cur_charcode;
|
|
|
2518 |
}
|
|
|
2519 |
|
|
|
2520 |
return gindex;
|
|
|
2521 |
}
|
|
|
2522 |
|
|
|
2523 |
|
|
|
2524 |
FT_CALLBACK_DEF( FT_UInt )
|
|
|
2525 |
tt_cmap13_char_index( TT_CMap cmap,
|
|
|
2526 |
FT_UInt32 char_code )
|
|
|
2527 |
{
|
|
|
2528 |
return tt_cmap13_char_map_binary( cmap, &char_code, 0 );
|
|
|
2529 |
}
|
|
|
2530 |
|
|
|
2531 |
|
|
|
2532 |
FT_CALLBACK_DEF( FT_UInt32 )
|
|
|
2533 |
tt_cmap13_char_next( TT_CMap cmap,
|
|
|
2534 |
FT_UInt32 *pchar_code )
|
|
|
2535 |
{
|
|
|
2536 |
TT_CMap13 cmap13 = (TT_CMap13)cmap;
|
|
|
2537 |
FT_UInt gindex;
|
|
|
2538 |
|
|
|
2539 |
|
|
|
2540 |
if ( cmap13->cur_charcode >= 0xFFFFFFFFUL )
|
|
|
2541 |
return 0;
|
|
|
2542 |
|
|
|
2543 |
/* no need to search */
|
|
|
2544 |
if ( cmap13->valid && cmap13->cur_charcode == *pchar_code )
|
|
|
2545 |
{
|
|
|
2546 |
tt_cmap13_next( cmap13 );
|
|
|
2547 |
if ( cmap13->valid )
|
|
|
2548 |
{
|
|
|
2549 |
gindex = cmap13->cur_gindex;
|
|
|
2550 |
if ( gindex )
|
|
|
2551 |
*pchar_code = cmap13->cur_charcode;
|
|
|
2552 |
}
|
|
|
2553 |
else
|
|
|
2554 |
gindex = 0;
|
|
|
2555 |
}
|
|
|
2556 |
else
|
|
|
2557 |
gindex = tt_cmap13_char_map_binary( cmap, pchar_code, 1 );
|
|
|
2558 |
|
|
|
2559 |
return gindex;
|
|
|
2560 |
}
|
|
|
2561 |
|
|
|
2562 |
|
|
|
2563 |
FT_CALLBACK_DEF( FT_Error )
|
|
|
2564 |
tt_cmap13_get_info( TT_CMap cmap,
|
|
|
2565 |
TT_CMapInfo *cmap_info )
|
|
|
2566 |
{
|
|
|
2567 |
FT_Byte* p = cmap->data + 8;
|
|
|
2568 |
|
|
|
2569 |
|
|
|
2570 |
cmap_info->format = 13;
|
|
|
2571 |
cmap_info->language = (FT_ULong)TT_PEEK_ULONG( p );
|
|
|
2572 |
|
|
|
2573 |
return SFNT_Err_Ok;
|
|
|
2574 |
}
|
|
|
2575 |
|
|
|
2576 |
|
|
|
2577 |
FT_DEFINE_TT_CMAP(tt_cmap13_class_rec,
|
|
|
2578 |
sizeof ( TT_CMap13Rec ),
|
|
|
2579 |
|
|
|
2580 |
(FT_CMap_InitFunc) tt_cmap13_init,
|
|
|
2581 |
(FT_CMap_DoneFunc) NULL,
|
|
|
2582 |
(FT_CMap_CharIndexFunc)tt_cmap13_char_index,
|
|
|
2583 |
(FT_CMap_CharNextFunc) tt_cmap13_char_next,
|
|
|
2584 |
|
|
|
2585 |
NULL, NULL, NULL, NULL, NULL
|
|
|
2586 |
,
|
|
|
2587 |
13,
|
|
|
2588 |
(TT_CMap_ValidateFunc) tt_cmap13_validate,
|
|
|
2589 |
(TT_CMap_Info_GetFunc) tt_cmap13_get_info
|
|
|
2590 |
)
|
|
|
2591 |
|
|
|
2592 |
#endif /* TT_CONFIG_CMAP_FORMAT_13 */
|
|
|
2593 |
|
|
|
2594 |
|
|
|
2595 |
/*************************************************************************/
|
|
|
2596 |
/*************************************************************************/
|
|
|
2597 |
/***** *****/
|
|
|
2598 |
/***** FORMAT 14 *****/
|
|
|
2599 |
/***** *****/
|
|
|
2600 |
/*************************************************************************/
|
|
|
2601 |
/*************************************************************************/
|
|
|
2602 |
|
|
|
2603 |
/*************************************************************************/
|
|
|
2604 |
/* */
|
|
|
2605 |
/* TABLE OVERVIEW */
|
|
|
2606 |
/* -------------- */
|
|
|
2607 |
/* */
|
|
|
2608 |
/* NAME OFFSET TYPE DESCRIPTION */
|
|
|
2609 |
/* */
|
|
|
2610 |
/* format 0 USHORT must be 14 */
|
|
|
2611 |
/* length 2 ULONG table length in bytes */
|
|
|
2612 |
/* numSelector 6 ULONG number of variation sel. records */
|
|
|
2613 |
/* */
|
|
|
2614 |
/* Followed by numSelector records, each of which looks like */
|
|
|
2615 |
/* */
|
|
|
2616 |
/* varSelector 0 UINT24 Unicode codepoint of sel. */
|
|
|
2617 |
/* defaultOff 3 ULONG offset to a default UVS table */
|
|
|
2618 |
/* describing any variants to be found in */
|
|
|
2619 |
/* the normal Unicode subtable. */
|
|
|
2620 |
/* nonDefOff 7 ULONG offset to a non-default UVS table */
|
|
|
2621 |
/* describing any variants not in the */
|
|
|
2622 |
/* standard cmap, with GIDs here */
|
|
|
2623 |
/* (either offset may be 0 NULL) */
|
|
|
2624 |
/* */
|
|
|
2625 |
/* Selectors are sorted by code point. */
|
|
|
2626 |
/* */
|
|
|
2627 |
/* A default Unicode Variation Selector (UVS) subtable is just a list of */
|
|
|
2628 |
/* ranges of code points which are to be found in the standard cmap. No */
|
|
|
2629 |
/* glyph IDs (GIDs) here. */
|
|
|
2630 |
/* */
|
|
|
2631 |
/* numRanges 0 ULONG number of ranges following */
|
|
|
2632 |
/* */
|
|
|
2633 |
/* A range looks like */
|
|
|
2634 |
/* */
|
|
|
2635 |
/* uniStart 0 UINT24 code point of the first character in */
|
|
|
2636 |
/* this range */
|
|
|
2637 |
/* additionalCnt 3 UBYTE count of additional characters in this */
|
|
|
2638 |
/* range (zero means a range of a single */
|
|
|
2639 |
/* character) */
|
|
|
2640 |
/* */
|
|
|
2641 |
/* Ranges are sorted by `uniStart'. */
|
|
|
2642 |
/* */
|
|
|
2643 |
/* A non-default Unicode Variation Selector (UVS) subtable is a list of */
|
|
|
2644 |
/* mappings from codepoint to GID. */
|
|
|
2645 |
/* */
|
|
|
2646 |
/* numMappings 0 ULONG number of mappings */
|
|
|
2647 |
/* */
|
|
|
2648 |
/* A range looks like */
|
|
|
2649 |
/* */
|
|
|
2650 |
/* uniStart 0 UINT24 code point of the first character in */
|
|
|
2651 |
/* this range */
|
|
|
2652 |
/* GID 3 USHORT and its GID */
|
|
|
2653 |
/* */
|
|
|
2654 |
/* Ranges are sorted by `uniStart'. */
|
|
|
2655 |
|
|
|
2656 |
#ifdef TT_CONFIG_CMAP_FORMAT_14
|
|
|
2657 |
|
|
|
2658 |
typedef struct TT_CMap14Rec_
|
|
|
2659 |
{
|
|
|
2660 |
TT_CMapRec cmap;
|
|
|
2661 |
FT_ULong num_selectors;
|
|
|
2662 |
|
|
|
2663 |
/* This array is used to store the results of various
|
|
|
2664 |
* cmap 14 query functions. The data is overwritten
|
|
|
2665 |
* on each call to these functions.
|
|
|
2666 |
*/
|
|
|
2667 |
FT_UInt32 max_results;
|
|
|
2668 |
FT_UInt32* results;
|
|
|
2669 |
FT_Memory memory;
|
|
|
2670 |
|
|
|
2671 |
} TT_CMap14Rec, *TT_CMap14;
|
|
|
2672 |
|
|
|
2673 |
|
|
|
2674 |
FT_CALLBACK_DEF( void )
|
|
|
2675 |
tt_cmap14_done( TT_CMap14 cmap )
|
|
|
2676 |
{
|
|
|
2677 |
FT_Memory memory = cmap->memory;
|
|
|
2678 |
|
|
|
2679 |
|
|
|
2680 |
cmap->max_results = 0;
|
|
|
2681 |
if ( memory != NULL && cmap->results != NULL )
|
|
|
2682 |
FT_FREE( cmap->results );
|
|
|
2683 |
}
|
|
|
2684 |
|
|
|
2685 |
|
|
|
2686 |
static FT_Error
|
|
|
2687 |
tt_cmap14_ensure( TT_CMap14 cmap,
|
|
|
2688 |
FT_UInt32 num_results,
|
|
|
2689 |
FT_Memory memory )
|
|
|
2690 |
{
|
|
|
2691 |
FT_UInt32 old_max = cmap->max_results;
|
|
|
2692 |
FT_Error error = SFNT_Err_Ok;
|
|
|
2693 |
|
|
|
2694 |
|
|
|
2695 |
if ( num_results > cmap->max_results )
|
|
|
2696 |
{
|
|
|
2697 |
cmap->memory = memory;
|
|
|
2698 |
|
|
|
2699 |
if ( FT_QRENEW_ARRAY( cmap->results, old_max, num_results ) )
|
|
|
2700 |
return error;
|
|
|
2701 |
|
|
|
2702 |
cmap->max_results = num_results;
|
|
|
2703 |
}
|
|
|
2704 |
|
|
|
2705 |
return error;
|
|
|
2706 |
}
|
|
|
2707 |
|
|
|
2708 |
|
|
|
2709 |
FT_CALLBACK_DEF( FT_Error )
|
|
|
2710 |
tt_cmap14_init( TT_CMap14 cmap,
|
|
|
2711 |
FT_Byte* table )
|
|
|
2712 |
{
|
|
|
2713 |
cmap->cmap.data = table;
|
|
|
2714 |
|
|
|
2715 |
table += 6;
|
|
|
2716 |
cmap->num_selectors = FT_PEEK_ULONG( table );
|
|
|
2717 |
cmap->max_results = 0;
|
|
|
2718 |
cmap->results = NULL;
|
|
|
2719 |
|
|
|
2720 |
return SFNT_Err_Ok;
|
|
|
2721 |
}
|
|
|
2722 |
|
|
|
2723 |
|
|
|
2724 |
FT_CALLBACK_DEF( FT_Error )
|
|
|
2725 |
tt_cmap14_validate( FT_Byte* table,
|
|
|
2726 |
FT_Validator valid )
|
|
|
2727 |
{
|
|
|
2728 |
FT_Byte* p = table + 2;
|
|
|
2729 |
FT_ULong length = TT_NEXT_ULONG( p );
|
|
|
2730 |
FT_ULong num_selectors = TT_NEXT_ULONG( p );
|
|
|
2731 |
|
|
|
2732 |
|
|
|
2733 |
if ( length > (FT_ULong)( valid->limit - table ) ||
|
|
|
2734 |
length < 10 + 11 * num_selectors )
|
|
|
2735 |
FT_INVALID_TOO_SHORT;
|
|
|
2736 |
|
|
|
2737 |
/* check selectors, they must be in increasing order */
|
|
|
2738 |
{
|
|
|
2739 |
/* we start lastVarSel at 1 because a variant selector value of 0
|
|
|
2740 |
* isn't valid.
|
|
|
2741 |
*/
|
|
|
2742 |
FT_ULong n, lastVarSel = 1;
|
|
|
2743 |
|
|
|
2744 |
|
|
|
2745 |
for ( n = 0; n < num_selectors; n++ )
|
|
|
2746 |
{
|
|
|
2747 |
FT_ULong varSel = TT_NEXT_UINT24( p );
|
|
|
2748 |
FT_ULong defOff = TT_NEXT_ULONG( p );
|
|
|
2749 |
FT_ULong nondefOff = TT_NEXT_ULONG( p );
|
|
|
2750 |
|
|
|
2751 |
|
|
|
2752 |
if ( defOff >= length || nondefOff >= length )
|
|
|
2753 |
FT_INVALID_TOO_SHORT;
|
|
|
2754 |
|
|
|
2755 |
if ( varSel < lastVarSel )
|
|
|
2756 |
FT_INVALID_DATA;
|
|
|
2757 |
|
|
|
2758 |
lastVarSel = varSel + 1;
|
|
|
2759 |
|
|
|
2760 |
/* check the default table (these glyphs should be reached */
|
|
|
2761 |
/* through the normal Unicode cmap, no GIDs, just check order) */
|
|
|
2762 |
if ( defOff != 0 )
|
|
|
2763 |
{
|
|
|
2764 |
FT_Byte* defp = table + defOff;
|
|
|
2765 |
FT_ULong numRanges = TT_NEXT_ULONG( defp );
|
|
|
2766 |
FT_ULong i;
|
|
|
2767 |
FT_ULong lastBase = 0;
|
|
|
2768 |
|
|
|
2769 |
|
|
|
2770 |
if ( defp + numRanges * 4 > valid->limit )
|
|
|
2771 |
FT_INVALID_TOO_SHORT;
|
|
|
2772 |
|
|
|
2773 |
for ( i = 0; i < numRanges; ++i )
|
|
|
2774 |
{
|
|
|
2775 |
FT_ULong base = TT_NEXT_UINT24( defp );
|
|
|
2776 |
FT_ULong cnt = FT_NEXT_BYTE( defp );
|
|
|
2777 |
|
|
|
2778 |
|
|
|
2779 |
if ( base + cnt >= 0x110000UL ) /* end of Unicode */
|
|
|
2780 |
FT_INVALID_DATA;
|
|
|
2781 |
|
|
|
2782 |
if ( base < lastBase )
|
|
|
2783 |
FT_INVALID_DATA;
|
|
|
2784 |
|
|
|
2785 |
lastBase = base + cnt + 1U;
|
|
|
2786 |
}
|
|
|
2787 |
}
|
|
|
2788 |
|
|
|
2789 |
/* and the non-default table (these glyphs are specified here) */
|
|
|
2790 |
if ( nondefOff != 0 )
|
|
|
2791 |
{
|
|
|
2792 |
FT_Byte* ndp = table + nondefOff;
|
|
|
2793 |
FT_ULong numMappings = TT_NEXT_ULONG( ndp );
|
|
|
2794 |
FT_ULong i, lastUni = 0;
|
|
|
2795 |
|
|
|
2796 |
|
|
|
2797 |
if ( numMappings * 4 > (FT_ULong)( valid->limit - ndp ) )
|
|
|
2798 |
FT_INVALID_TOO_SHORT;
|
|
|
2799 |
|
|
|
2800 |
for ( i = 0; i < numMappings; ++i )
|
|
|
2801 |
{
|
|
|
2802 |
FT_ULong uni = TT_NEXT_UINT24( ndp );
|
|
|
2803 |
FT_ULong gid = TT_NEXT_USHORT( ndp );
|
|
|
2804 |
|
|
|
2805 |
|
|
|
2806 |
if ( uni >= 0x110000UL ) /* end of Unicode */
|
|
|
2807 |
FT_INVALID_DATA;
|
|
|
2808 |
|
|
|
2809 |
if ( uni < lastUni )
|
|
|
2810 |
FT_INVALID_DATA;
|
|
|
2811 |
|
|
|
2812 |
lastUni = uni + 1U;
|
|
|
2813 |
|
|
|
2814 |
if ( valid->level >= FT_VALIDATE_TIGHT &&
|
|
|
2815 |
gid >= TT_VALID_GLYPH_COUNT( valid ) )
|
|
|
2816 |
FT_INVALID_GLYPH_ID;
|
|
|
2817 |
}
|
|
|
2818 |
}
|
|
|
2819 |
}
|
|
|
2820 |
}
|
|
|
2821 |
|
|
|
2822 |
return SFNT_Err_Ok;
|
|
|
2823 |
}
|
|
|
2824 |
|
|
|
2825 |
|
|
|
2826 |
FT_CALLBACK_DEF( FT_UInt )
|
|
|
2827 |
tt_cmap14_char_index( TT_CMap cmap,
|
|
|
2828 |
FT_UInt32 char_code )
|
|
|
2829 |
{
|
|
|
2830 |
FT_UNUSED( cmap );
|
|
|
2831 |
FT_UNUSED( char_code );
|
|
|
2832 |
|
|
|
2833 |
/* This can't happen */
|
|
|
2834 |
return 0;
|
|
|
2835 |
}
|
|
|
2836 |
|
|
|
2837 |
|
|
|
2838 |
FT_CALLBACK_DEF( FT_UInt32 )
|
|
|
2839 |
tt_cmap14_char_next( TT_CMap cmap,
|
|
|
2840 |
FT_UInt32 *pchar_code )
|
|
|
2841 |
{
|
|
|
2842 |
FT_UNUSED( cmap );
|
|
|
2843 |
|
|
|
2844 |
/* This can't happen */
|
|
|
2845 |
*pchar_code = 0;
|
|
|
2846 |
return 0;
|
|
|
2847 |
}
|
|
|
2848 |
|
|
|
2849 |
|
|
|
2850 |
FT_CALLBACK_DEF( FT_Error )
|
|
|
2851 |
tt_cmap14_get_info( TT_CMap cmap,
|
|
|
2852 |
TT_CMapInfo *cmap_info )
|
|
|
2853 |
{
|
|
|
2854 |
FT_UNUSED( cmap );
|
|
|
2855 |
|
|
|
2856 |
cmap_info->format = 14;
|
|
|
2857 |
/* subtable 14 does not define a language field */
|
|
|
2858 |
cmap_info->language = 0xFFFFFFFFUL;
|
|
|
2859 |
|
|
|
2860 |
return SFNT_Err_Ok;
|
|
|
2861 |
}
|
|
|
2862 |
|
|
|
2863 |
|
|
|
2864 |
static FT_UInt
|
|
|
2865 |
tt_cmap14_char_map_def_binary( FT_Byte *base,
|
|
|
2866 |
FT_UInt32 char_code )
|
|
|
2867 |
{
|
|
|
2868 |
FT_UInt32 numRanges = TT_PEEK_ULONG( base );
|
|
|
2869 |
FT_UInt32 max, min;
|
|
|
2870 |
|
|
|
2871 |
|
|
|
2872 |
min = 0;
|
|
|
2873 |
max = numRanges;
|
|
|
2874 |
|
|
|
2875 |
base += 4;
|
|
|
2876 |
|
|
|
2877 |
/* binary search */
|
|
|
2878 |
while ( min < max )
|
|
|
2879 |
{
|
|
|
2880 |
FT_UInt32 mid = ( min + max ) >> 1;
|
|
|
2881 |
FT_Byte* p = base + 4 * mid;
|
|
|
2882 |
FT_ULong start = TT_NEXT_UINT24( p );
|
|
|
2883 |
FT_UInt cnt = FT_NEXT_BYTE( p );
|
|
|
2884 |
|
|
|
2885 |
|
|
|
2886 |
if ( char_code < start )
|
|
|
2887 |
max = mid;
|
|
|
2888 |
else if ( char_code > start+cnt )
|
|
|
2889 |
min = mid + 1;
|
|
|
2890 |
else
|
|
|
2891 |
return TRUE;
|
|
|
2892 |
}
|
|
|
2893 |
|
|
|
2894 |
return FALSE;
|
|
|
2895 |
}
|
|
|
2896 |
|
|
|
2897 |
|
|
|
2898 |
static FT_UInt
|
|
|
2899 |
tt_cmap14_char_map_nondef_binary( FT_Byte *base,
|
|
|
2900 |
FT_UInt32 char_code )
|
|
|
2901 |
{
|
|
|
2902 |
FT_UInt32 numMappings = TT_PEEK_ULONG( base );
|
|
|
2903 |
FT_UInt32 max, min;
|
|
|
2904 |
|
|
|
2905 |
|
|
|
2906 |
min = 0;
|
|
|
2907 |
max = numMappings;
|
|
|
2908 |
|
|
|
2909 |
base += 4;
|
|
|
2910 |
|
|
|
2911 |
/* binary search */
|
|
|
2912 |
while ( min < max )
|
|
|
2913 |
{
|
|
|
2914 |
FT_UInt32 mid = ( min + max ) >> 1;
|
|
|
2915 |
FT_Byte* p = base + 5 * mid;
|
|
|
2916 |
FT_UInt32 uni = (FT_UInt32)TT_NEXT_UINT24( p );
|
|
|
2917 |
|
|
|
2918 |
|
|
|
2919 |
if ( char_code < uni )
|
|
|
2920 |
max = mid;
|
|
|
2921 |
else if ( char_code > uni )
|
|
|
2922 |
min = mid + 1;
|
|
|
2923 |
else
|
|
|
2924 |
return TT_PEEK_USHORT( p );
|
|
|
2925 |
}
|
|
|
2926 |
|
|
|
2927 |
return 0;
|
|
|
2928 |
}
|
|
|
2929 |
|
|
|
2930 |
|
|
|
2931 |
static FT_Byte*
|
|
|
2932 |
tt_cmap14_find_variant( FT_Byte *base,
|
|
|
2933 |
FT_UInt32 variantCode )
|
|
|
2934 |
{
|
|
|
2935 |
FT_UInt32 numVar = TT_PEEK_ULONG( base );
|
|
|
2936 |
FT_UInt32 max, min;
|
|
|
2937 |
|
|
|
2938 |
|
|
|
2939 |
min = 0;
|
|
|
2940 |
max = numVar;
|
|
|
2941 |
|
|
|
2942 |
base += 4;
|
|
|
2943 |
|
|
|
2944 |
/* binary search */
|
|
|
2945 |
while ( min < max )
|
|
|
2946 |
{
|
|
|
2947 |
FT_UInt32 mid = ( min + max ) >> 1;
|
|
|
2948 |
FT_Byte* p = base + 11 * mid;
|
|
|
2949 |
FT_ULong varSel = TT_NEXT_UINT24( p );
|
|
|
2950 |
|
|
|
2951 |
|
|
|
2952 |
if ( variantCode < varSel )
|
|
|
2953 |
max = mid;
|
|
|
2954 |
else if ( variantCode > varSel )
|
|
|
2955 |
min = mid + 1;
|
|
|
2956 |
else
|
|
|
2957 |
return p;
|
|
|
2958 |
}
|
|
|
2959 |
|
|
|
2960 |
return NULL;
|
|
|
2961 |
}
|
|
|
2962 |
|
|
|
2963 |
|
|
|
2964 |
FT_CALLBACK_DEF( FT_UInt )
|
|
|
2965 |
tt_cmap14_char_var_index( TT_CMap cmap,
|
|
|
2966 |
TT_CMap ucmap,
|
|
|
2967 |
FT_UInt32 charcode,
|
|
|
2968 |
FT_UInt32 variantSelector)
|
|
|
2969 |
{
|
|
|
2970 |
FT_Byte* p = tt_cmap14_find_variant( cmap->data + 6, variantSelector );
|
|
|
2971 |
FT_ULong defOff;
|
|
|
2972 |
FT_ULong nondefOff;
|
|
|
2973 |
|
|
|
2974 |
|
|
|
2975 |
if ( !p )
|
|
|
2976 |
return 0;
|
|
|
2977 |
|
|
|
2978 |
defOff = TT_NEXT_ULONG( p );
|
|
|
2979 |
nondefOff = TT_PEEK_ULONG( p );
|
|
|
2980 |
|
|
|
2981 |
if ( defOff != 0 &&
|
|
|
2982 |
tt_cmap14_char_map_def_binary( cmap->data + defOff, charcode ) )
|
|
|
2983 |
{
|
|
|
2984 |
/* This is the default variant of this charcode. GID not stored */
|
|
|
2985 |
/* here; stored in the normal Unicode charmap instead. */
|
|
|
2986 |
return ucmap->cmap.clazz->char_index( &ucmap->cmap, charcode );
|
|
|
2987 |
}
|
|
|
2988 |
|
|
|
2989 |
if ( nondefOff != 0 )
|
|
|
2990 |
return tt_cmap14_char_map_nondef_binary( cmap->data + nondefOff,
|
|
|
2991 |
charcode );
|
|
|
2992 |
|
|
|
2993 |
return 0;
|
|
|
2994 |
}
|
|
|
2995 |
|
|
|
2996 |
|
|
|
2997 |
FT_CALLBACK_DEF( FT_Int )
|
|
|
2998 |
tt_cmap14_char_var_isdefault( TT_CMap cmap,
|
|
|
2999 |
FT_UInt32 charcode,
|
|
|
3000 |
FT_UInt32 variantSelector )
|
|
|
3001 |
{
|
|
|
3002 |
FT_Byte* p = tt_cmap14_find_variant( cmap->data + 6, variantSelector );
|
|
|
3003 |
FT_ULong defOff;
|
|
|
3004 |
FT_ULong nondefOff;
|
|
|
3005 |
|
|
|
3006 |
|
|
|
3007 |
if ( !p )
|
|
|
3008 |
return -1;
|
|
|
3009 |
|
|
|
3010 |
defOff = TT_NEXT_ULONG( p );
|
|
|
3011 |
nondefOff = TT_NEXT_ULONG( p );
|
|
|
3012 |
|
|
|
3013 |
if ( defOff != 0 &&
|
|
|
3014 |
tt_cmap14_char_map_def_binary( cmap->data + defOff, charcode ) )
|
|
|
3015 |
return 1;
|
|
|
3016 |
|
|
|
3017 |
if ( nondefOff != 0 &&
|
|
|
3018 |
tt_cmap14_char_map_nondef_binary( cmap->data + nondefOff,
|
|
|
3019 |
charcode ) != 0 )
|
|
|
3020 |
return 0;
|
|
|
3021 |
|
|
|
3022 |
return -1;
|
|
|
3023 |
}
|
|
|
3024 |
|
|
|
3025 |
|
|
|
3026 |
FT_CALLBACK_DEF( FT_UInt32* )
|
|
|
3027 |
tt_cmap14_variants( TT_CMap cmap,
|
|
|
3028 |
FT_Memory memory )
|
|
|
3029 |
{
|
|
|
3030 |
TT_CMap14 cmap14 = (TT_CMap14)cmap;
|
|
|
3031 |
FT_UInt32 count = cmap14->num_selectors;
|
|
|
3032 |
FT_Byte* p = cmap->data + 10;
|
|
|
3033 |
FT_UInt32* result;
|
|
|
3034 |
FT_UInt32 i;
|
|
|
3035 |
|
|
|
3036 |
|
|
|
3037 |
if ( tt_cmap14_ensure( cmap14, ( count + 1 ), memory ) )
|
|
|
3038 |
return NULL;
|
|
|
3039 |
|
|
|
3040 |
result = cmap14->results;
|
|
|
3041 |
for ( i = 0; i < count; ++i )
|
|
|
3042 |
{
|
|
|
3043 |
result[i] = (FT_UInt32)TT_NEXT_UINT24( p );
|
|
|
3044 |
p += 8;
|
|
|
3045 |
}
|
|
|
3046 |
result[i] = 0;
|
|
|
3047 |
|
|
|
3048 |
return result;
|
|
|
3049 |
}
|
|
|
3050 |
|
|
|
3051 |
|
|
|
3052 |
FT_CALLBACK_DEF( FT_UInt32 * )
|
|
|
3053 |
tt_cmap14_char_variants( TT_CMap cmap,
|
|
|
3054 |
FT_Memory memory,
|
|
|
3055 |
FT_UInt32 charCode )
|
|
|
3056 |
{
|
|
|
3057 |
TT_CMap14 cmap14 = (TT_CMap14) cmap;
|
|
|
3058 |
FT_UInt32 count = cmap14->num_selectors;
|
|
|
3059 |
FT_Byte* p = cmap->data + 10;
|
|
|
3060 |
FT_UInt32* q;
|
|
|
3061 |
|
|
|
3062 |
|
|
|
3063 |
if ( tt_cmap14_ensure( cmap14, ( count + 1 ), memory ) )
|
|
|
3064 |
return NULL;
|
|
|
3065 |
|
|
|
3066 |
for ( q = cmap14->results; count > 0; --count )
|
|
|
3067 |
{
|
|
|
3068 |
FT_UInt32 varSel = TT_NEXT_UINT24( p );
|
|
|
3069 |
FT_ULong defOff = TT_NEXT_ULONG( p );
|
|
|
3070 |
FT_ULong nondefOff = TT_NEXT_ULONG( p );
|
|
|
3071 |
|
|
|
3072 |
|
|
|
3073 |
if ( ( defOff != 0 &&
|
|
|
3074 |
tt_cmap14_char_map_def_binary( cmap->data + defOff,
|
|
|
3075 |
charCode ) ) ||
|
|
|
3076 |
( nondefOff != 0 &&
|
|
|
3077 |
tt_cmap14_char_map_nondef_binary( cmap->data + nondefOff,
|
|
|
3078 |
charCode ) != 0 ) )
|
|
|
3079 |
{
|
|
|
3080 |
q[0] = varSel;
|
|
|
3081 |
q++;
|
|
|
3082 |
}
|
|
|
3083 |
}
|
|
|
3084 |
q[0] = 0;
|
|
|
3085 |
|
|
|
3086 |
return cmap14->results;
|
|
|
3087 |
}
|
|
|
3088 |
|
|
|
3089 |
|
|
|
3090 |
static FT_UInt
|
|
|
3091 |
tt_cmap14_def_char_count( FT_Byte *p )
|
|
|
3092 |
{
|
|
|
3093 |
FT_UInt32 numRanges = (FT_UInt32)TT_NEXT_ULONG( p );
|
|
|
3094 |
FT_UInt tot = 0;
|
|
|
3095 |
|
|
|
3096 |
|
|
|
3097 |
p += 3; /* point to the first `cnt' field */
|
|
|
3098 |
for ( ; numRanges > 0; numRanges-- )
|
|
|
3099 |
{
|
|
|
3100 |
tot += 1 + p[0];
|
|
|
3101 |
p += 4;
|
|
|
3102 |
}
|
|
|
3103 |
|
|
|
3104 |
return tot;
|
|
|
3105 |
}
|
|
|
3106 |
|
|
|
3107 |
|
|
|
3108 |
static FT_UInt32*
|
|
|
3109 |
tt_cmap14_get_def_chars( TT_CMap cmap,
|
|
|
3110 |
FT_Byte* p,
|
|
|
3111 |
FT_Memory memory )
|
|
|
3112 |
{
|
|
|
3113 |
TT_CMap14 cmap14 = (TT_CMap14) cmap;
|
|
|
3114 |
FT_UInt32 numRanges;
|
|
|
3115 |
FT_UInt cnt;
|
|
|
3116 |
FT_UInt32* q;
|
|
|
3117 |
|
|
|
3118 |
|
|
|
3119 |
cnt = tt_cmap14_def_char_count( p );
|
|
|
3120 |
numRanges = (FT_UInt32)TT_NEXT_ULONG( p );
|
|
|
3121 |
|
|
|
3122 |
if ( tt_cmap14_ensure( cmap14, ( cnt + 1 ), memory ) )
|
|
|
3123 |
return NULL;
|
|
|
3124 |
|
|
|
3125 |
for ( q = cmap14->results; numRanges > 0; --numRanges )
|
|
|
3126 |
{
|
|
|
3127 |
FT_UInt32 uni = (FT_UInt32)TT_NEXT_UINT24( p );
|
|
|
3128 |
|
|
|
3129 |
|
|
|
3130 |
cnt = FT_NEXT_BYTE( p ) + 1;
|
|
|
3131 |
do
|
|
|
3132 |
{
|
|
|
3133 |
q[0] = uni;
|
|
|
3134 |
uni += 1;
|
|
|
3135 |
q += 1;
|
|
|
3136 |
} while ( --cnt != 0 );
|
|
|
3137 |
}
|
|
|
3138 |
q[0] = 0;
|
|
|
3139 |
|
|
|
3140 |
return cmap14->results;
|
|
|
3141 |
}
|
|
|
3142 |
|
|
|
3143 |
|
|
|
3144 |
static FT_UInt32*
|
|
|
3145 |
tt_cmap14_get_nondef_chars( TT_CMap cmap,
|
|
|
3146 |
FT_Byte *p,
|
|
|
3147 |
FT_Memory memory )
|
|
|
3148 |
{
|
|
|
3149 |
TT_CMap14 cmap14 = (TT_CMap14) cmap;
|
|
|
3150 |
FT_UInt32 numMappings;
|
|
|
3151 |
FT_UInt i;
|
|
|
3152 |
FT_UInt32 *ret;
|
|
|
3153 |
|
|
|
3154 |
|
|
|
3155 |
numMappings = (FT_UInt32)TT_NEXT_ULONG( p );
|
|
|
3156 |
|
|
|
3157 |
if ( tt_cmap14_ensure( cmap14, ( numMappings + 1 ), memory ) )
|
|
|
3158 |
return NULL;
|
|
|
3159 |
|
|
|
3160 |
ret = cmap14->results;
|
|
|
3161 |
for ( i = 0; i < numMappings; ++i )
|
|
|
3162 |
{
|
|
|
3163 |
ret[i] = (FT_UInt32)TT_NEXT_UINT24( p );
|
|
|
3164 |
p += 2;
|
|
|
3165 |
}
|
|
|
3166 |
ret[i] = 0;
|
|
|
3167 |
|
|
|
3168 |
return ret;
|
|
|
3169 |
}
|
|
|
3170 |
|
|
|
3171 |
|
|
|
3172 |
FT_CALLBACK_DEF( FT_UInt32 * )
|
|
|
3173 |
tt_cmap14_variant_chars( TT_CMap cmap,
|
|
|
3174 |
FT_Memory memory,
|
|
|
3175 |
FT_UInt32 variantSelector )
|
|
|
3176 |
{
|
|
|
3177 |
FT_Byte *p = tt_cmap14_find_variant( cmap->data + 6,
|
|
|
3178 |
variantSelector );
|
|
|
3179 |
FT_UInt32 *ret;
|
|
|
3180 |
FT_Int i;
|
|
|
3181 |
FT_ULong defOff;
|
|
|
3182 |
FT_ULong nondefOff;
|
|
|
3183 |
|
|
|
3184 |
|
|
|
3185 |
if ( !p )
|
|
|
3186 |
return NULL;
|
|
|
3187 |
|
|
|
3188 |
defOff = TT_NEXT_ULONG( p );
|
|
|
3189 |
nondefOff = TT_NEXT_ULONG( p );
|
|
|
3190 |
|
|
|
3191 |
if ( defOff == 0 && nondefOff == 0 )
|
|
|
3192 |
return NULL;
|
|
|
3193 |
|
|
|
3194 |
if ( defOff == 0 )
|
|
|
3195 |
return tt_cmap14_get_nondef_chars( cmap, cmap->data + nondefOff,
|
|
|
3196 |
memory );
|
|
|
3197 |
else if ( nondefOff == 0 )
|
|
|
3198 |
return tt_cmap14_get_def_chars( cmap, cmap->data + defOff,
|
|
|
3199 |
memory );
|
|
|
3200 |
else
|
|
|
3201 |
{
|
|
|
3202 |
/* Both a default and a non-default glyph set? That's probably not */
|
|
|
3203 |
/* good font design, but the spec allows for it... */
|
|
|
3204 |
TT_CMap14 cmap14 = (TT_CMap14) cmap;
|
|
|
3205 |
FT_UInt32 numRanges;
|
|
|
3206 |
FT_UInt32 numMappings;
|
|
|
3207 |
FT_UInt32 duni;
|
|
|
3208 |
FT_UInt32 dcnt;
|
|
|
3209 |
FT_UInt32 nuni;
|
|
|
3210 |
FT_Byte* dp;
|
|
|
3211 |
FT_UInt di, ni, k;
|
|
|
3212 |
|
|
|
3213 |
|
|
|
3214 |
p = cmap->data + nondefOff;
|
|
|
3215 |
dp = cmap->data + defOff;
|
|
|
3216 |
|
|
|
3217 |
numMappings = (FT_UInt32)TT_NEXT_ULONG( p );
|
|
|
3218 |
dcnt = tt_cmap14_def_char_count( dp );
|
|
|
3219 |
numRanges = (FT_UInt32)TT_NEXT_ULONG( dp );
|
|
|
3220 |
|
|
|
3221 |
if ( numMappings == 0 )
|
|
|
3222 |
return tt_cmap14_get_def_chars( cmap, cmap->data + defOff,
|
|
|
3223 |
memory );
|
|
|
3224 |
if ( dcnt == 0 )
|
|
|
3225 |
return tt_cmap14_get_nondef_chars( cmap, cmap->data + nondefOff,
|
|
|
3226 |
memory );
|
|
|
3227 |
|
|
|
3228 |
if ( tt_cmap14_ensure( cmap14, ( dcnt + numMappings + 1 ), memory ) )
|
|
|
3229 |
return NULL;
|
|
|
3230 |
|
|
|
3231 |
ret = cmap14->results;
|
|
|
3232 |
duni = (FT_UInt32)TT_NEXT_UINT24( dp );
|
|
|
3233 |
dcnt = FT_NEXT_BYTE( dp );
|
|
|
3234 |
di = 1;
|
|
|
3235 |
nuni = (FT_UInt32)TT_NEXT_UINT24( p );
|
|
|
3236 |
p += 2;
|
|
|
3237 |
ni = 1;
|
|
|
3238 |
i = 0;
|
|
|
3239 |
|
|
|
3240 |
for ( ;; )
|
|
|
3241 |
{
|
|
|
3242 |
if ( nuni > duni + dcnt )
|
|
|
3243 |
{
|
|
|
3244 |
for ( k = 0; k <= dcnt; ++k )
|
|
|
3245 |
ret[i++] = duni + k;
|
|
|
3246 |
|
|
|
3247 |
++di;
|
|
|
3248 |
|
|
|
3249 |
if ( di > numRanges )
|
|
|
3250 |
break;
|
|
|
3251 |
|
|
|
3252 |
duni = (FT_UInt32)TT_NEXT_UINT24( dp );
|
|
|
3253 |
dcnt = FT_NEXT_BYTE( dp );
|
|
|
3254 |
}
|
|
|
3255 |
else
|
|
|
3256 |
{
|
|
|
3257 |
if ( nuni < duni )
|
|
|
3258 |
ret[i++] = nuni;
|
|
|
3259 |
/* If it is within the default range then ignore it -- */
|
|
|
3260 |
/* that should not have happened */
|
|
|
3261 |
++ni;
|
|
|
3262 |
if ( ni > numMappings )
|
|
|
3263 |
break;
|
|
|
3264 |
|
|
|
3265 |
nuni = (FT_UInt32)TT_NEXT_UINT24( p );
|
|
|
3266 |
p += 2;
|
|
|
3267 |
}
|
|
|
3268 |
}
|
|
|
3269 |
|
|
|
3270 |
if ( ni <= numMappings )
|
|
|
3271 |
{
|
|
|
3272 |
/* If we get here then we have run out of all default ranges. */
|
|
|
3273 |
/* We have read one non-default mapping which we haven't stored */
|
|
|
3274 |
/* and there may be others that need to be read. */
|
|
|
3275 |
ret[i++] = nuni;
|
|
|
3276 |
while ( ni < numMappings )
|
|
|
3277 |
{
|
|
|
3278 |
ret[i++] = (FT_UInt32)TT_NEXT_UINT24( p );
|
|
|
3279 |
p += 2;
|
|
|
3280 |
++ni;
|
|
|
3281 |
}
|
|
|
3282 |
}
|
|
|
3283 |
else if ( di <= numRanges )
|
|
|
3284 |
{
|
|
|
3285 |
/* If we get here then we have run out of all non-default */
|
|
|
3286 |
/* mappings. We have read one default range which we haven't */
|
|
|
3287 |
/* stored and there may be others that need to be read. */
|
|
|
3288 |
for ( k = 0; k <= dcnt; ++k )
|
|
|
3289 |
ret[i++] = duni + k;
|
|
|
3290 |
|
|
|
3291 |
while ( di < numRanges )
|
|
|
3292 |
{
|
|
|
3293 |
duni = (FT_UInt32)TT_NEXT_UINT24( dp );
|
|
|
3294 |
dcnt = FT_NEXT_BYTE( dp );
|
|
|
3295 |
|
|
|
3296 |
for ( k = 0; k <= dcnt; ++k )
|
|
|
3297 |
ret[i++] = duni + k;
|
|
|
3298 |
++di;
|
|
|
3299 |
}
|
|
|
3300 |
}
|
|
|
3301 |
|
|
|
3302 |
ret[i] = 0;
|
|
|
3303 |
|
|
|
3304 |
return ret;
|
|
|
3305 |
}
|
|
|
3306 |
}
|
|
|
3307 |
|
|
|
3308 |
|
|
|
3309 |
FT_DEFINE_TT_CMAP(tt_cmap14_class_rec,
|
|
|
3310 |
sizeof ( TT_CMap14Rec ),
|
|
|
3311 |
|
|
|
3312 |
(FT_CMap_InitFunc) tt_cmap14_init,
|
|
|
3313 |
(FT_CMap_DoneFunc) tt_cmap14_done,
|
|
|
3314 |
(FT_CMap_CharIndexFunc)tt_cmap14_char_index,
|
|
|
3315 |
(FT_CMap_CharNextFunc) tt_cmap14_char_next,
|
|
|
3316 |
|
|
|
3317 |
/* Format 14 extension functions */
|
|
|
3318 |
(FT_CMap_CharVarIndexFunc) tt_cmap14_char_var_index,
|
|
|
3319 |
(FT_CMap_CharVarIsDefaultFunc)tt_cmap14_char_var_isdefault,
|
|
|
3320 |
(FT_CMap_VariantListFunc) tt_cmap14_variants,
|
|
|
3321 |
(FT_CMap_CharVariantListFunc) tt_cmap14_char_variants,
|
|
|
3322 |
(FT_CMap_VariantCharListFunc) tt_cmap14_variant_chars
|
|
|
3323 |
,
|
|
|
3324 |
14,
|
|
|
3325 |
(TT_CMap_ValidateFunc)tt_cmap14_validate,
|
|
|
3326 |
(TT_CMap_Info_GetFunc)tt_cmap14_get_info
|
|
|
3327 |
)
|
|
|
3328 |
|
|
|
3329 |
#endif /* TT_CONFIG_CMAP_FORMAT_14 */
|
|
|
3330 |
|
|
|
3331 |
|
|
|
3332 |
#ifndef FT_CONFIG_OPTION_PIC
|
|
|
3333 |
|
|
|
3334 |
static const TT_CMap_Class tt_cmap_classes[] =
|
|
|
3335 |
{
|
|
|
3336 |
#define TTCMAPCITEM(a) &a,
|
|
|
3337 |
#include "ttcmapc.h"
|
|
|
3338 |
NULL,
|
|
|
3339 |
};
|
|
|
3340 |
|
|
|
3341 |
#else /*FT_CONFIG_OPTION_PIC*/
|
|
|
3342 |
|
|
|
3343 |
void FT_Destroy_Class_tt_cmap_classes(FT_Library library, TT_CMap_Class* clazz)
|
|
|
3344 |
{
|
|
|
3345 |
FT_Memory memory = library->memory;
|
|
|
3346 |
if ( clazz )
|
|
|
3347 |
FT_FREE( clazz );
|
|
|
3348 |
}
|
|
|
3349 |
|
|
|
3350 |
FT_Error FT_Create_Class_tt_cmap_classes(FT_Library library, TT_CMap_Class** output_class)
|
|
|
3351 |
{
|
|
|
3352 |
TT_CMap_Class* clazz;
|
|
|
3353 |
TT_CMap_ClassRec* recs;
|
|
|
3354 |
FT_Error error;
|
|
|
3355 |
FT_Memory memory = library->memory;
|
|
|
3356 |
int i = 0;
|
|
|
3357 |
|
|
|
3358 |
#define TTCMAPCITEM(a) i++;
|
|
|
3359 |
#include "ttcmapc.h"
|
|
|
3360 |
|
|
|
3361 |
/* allocate enough space for both the pointers +terminator and the class instances */
|
|
|
3362 |
if ( FT_ALLOC( clazz, sizeof(*clazz)*(i+1)+sizeof(TT_CMap_ClassRec)*i ) )
|
|
|
3363 |
return error;
|
|
|
3364 |
|
|
|
3365 |
/* the location of the class instances follows the array of pointers */
|
|
|
3366 |
recs = (TT_CMap_ClassRec*) (((char*)clazz)+(sizeof(*clazz)*(i+1)));
|
|
|
3367 |
i=0;
|
|
|
3368 |
|
|
|
3369 |
#undef TTCMAPCITEM
|
|
|
3370 |
#define TTCMAPCITEM(a) \
|
|
|
3371 |
FT_Init_Class_##a(&recs[i]); \
|
|
|
3372 |
clazz[i] = &recs[i]; \
|
|
|
3373 |
i++;
|
|
|
3374 |
#include "ttcmapc.h"
|
|
|
3375 |
|
|
|
3376 |
clazz[i] = NULL;
|
|
|
3377 |
|
|
|
3378 |
*output_class = clazz;
|
|
|
3379 |
return SFNT_Err_Ok;
|
|
|
3380 |
}
|
|
|
3381 |
|
|
|
3382 |
#endif /*FT_CONFIG_OPTION_PIC*/
|
|
|
3383 |
|
|
|
3384 |
|
|
|
3385 |
/* parse the `cmap' table and build the corresponding TT_CMap objects */
|
|
|
3386 |
/* in the current face */
|
|
|
3387 |
/* */
|
|
|
3388 |
FT_LOCAL_DEF( FT_Error )
|
|
|
3389 |
tt_face_build_cmaps( TT_Face face )
|
|
|
3390 |
{
|
|
|
3391 |
FT_Byte* table = face->cmap_table;
|
|
|
3392 |
FT_Byte* limit = table + face->cmap_size;
|
|
|
3393 |
FT_UInt volatile num_cmaps;
|
|
|
3394 |
FT_Byte* volatile p = table;
|
|
|
3395 |
FT_Library library = FT_FACE_LIBRARY( face );
|
|
|
3396 |
|
|
|
3397 |
FT_UNUSED( library );
|
|
|
3398 |
|
|
|
3399 |
|
|
|
3400 |
if ( !p || p + 4 > limit )
|
|
|
3401 |
return SFNT_Err_Invalid_Table;
|
|
|
3402 |
|
|
|
3403 |
/* only recognize format 0 */
|
|
|
3404 |
if ( TT_NEXT_USHORT( p ) != 0 )
|
|
|
3405 |
{
|
|
|
3406 |
p -= 2;
|
|
|
3407 |
FT_ERROR(( "tt_face_build_cmaps:"
|
|
|
3408 |
" unsupported `cmap' table format = %d\n",
|
|
|
3409 |
TT_PEEK_USHORT( p ) ));
|
|
|
3410 |
return SFNT_Err_Invalid_Table;
|
|
|
3411 |
}
|
|
|
3412 |
|
|
|
3413 |
num_cmaps = TT_NEXT_USHORT( p );
|
|
|
3414 |
#ifdef FT_MAX_CHARMAP_CACHEABLE
|
|
|
3415 |
if ( num_cmaps > FT_MAX_CHARMAP_CACHEABLE )
|
|
|
3416 |
FT_ERROR(( "tt_face_build_cmaps: too many cmap subtables(%d) "
|
|
|
3417 |
"subtable#%d and later are loaded but cannot be searched\n",
|
|
|
3418 |
num_cmaps, FT_MAX_CHARMAP_CACHEABLE + 1 ));
|
|
|
3419 |
#endif
|
|
|
3420 |
|
|
|
3421 |
for ( ; num_cmaps > 0 && p + 8 <= limit; num_cmaps-- )
|
|
|
3422 |
{
|
|
|
3423 |
FT_CharMapRec charmap;
|
|
|
3424 |
FT_UInt32 offset;
|
|
|
3425 |
|
|
|
3426 |
|
|
|
3427 |
charmap.platform_id = TT_NEXT_USHORT( p );
|
|
|
3428 |
charmap.encoding_id = TT_NEXT_USHORT( p );
|
|
|
3429 |
charmap.face = FT_FACE( face );
|
|
|
3430 |
charmap.encoding = FT_ENCODING_NONE; /* will be filled later */
|
|
|
3431 |
offset = TT_NEXT_ULONG( p );
|
|
|
3432 |
|
|
|
3433 |
if ( offset && offset <= face->cmap_size - 2 )
|
|
|
3434 |
{
|
|
|
3435 |
FT_Byte* volatile cmap = table + offset;
|
|
|
3436 |
volatile FT_UInt format = TT_PEEK_USHORT( cmap );
|
|
|
3437 |
const TT_CMap_Class* volatile pclazz = FT_TT_CMAP_CLASSES_GET;
|
|
|
3438 |
TT_CMap_Class volatile clazz;
|
|
|
3439 |
|
|
|
3440 |
|
|
|
3441 |
for ( ; *pclazz; pclazz++ )
|
|
|
3442 |
{
|
|
|
3443 |
clazz = *pclazz;
|
|
|
3444 |
if ( clazz->format == format )
|
|
|
3445 |
{
|
|
|
3446 |
volatile TT_ValidatorRec valid;
|
|
|
3447 |
volatile FT_Error error = SFNT_Err_Ok;
|
|
|
3448 |
|
|
|
3449 |
|
|
|
3450 |
ft_validator_init( FT_VALIDATOR( &valid ), cmap, limit,
|
|
|
3451 |
FT_VALIDATE_DEFAULT );
|
|
|
3452 |
|
|
|
3453 |
valid.num_glyphs = (FT_UInt)face->max_profile.numGlyphs;
|
|
|
3454 |
|
|
|
3455 |
if ( ft_setjmp(
|
|
|
3456 |
*((ft_jmp_buf*)&FT_VALIDATOR( &valid )->jump_buffer) ) == 0 )
|
|
|
3457 |
{
|
|
|
3458 |
/* validate this cmap sub-table */
|
|
|
3459 |
error = clazz->validate( cmap, FT_VALIDATOR( &valid ) );
|
|
|
3460 |
}
|
|
|
3461 |
|
|
|
3462 |
if ( valid.validator.error == 0 )
|
|
|
3463 |
{
|
|
|
3464 |
FT_CMap ttcmap;
|
|
|
3465 |
|
|
|
3466 |
|
|
|
3467 |
/* It might make sense to store the single variation selector */
|
|
|
3468 |
/* cmap somewhere special. But it would have to be in the */
|
|
|
3469 |
/* public FT_FaceRec, and we can't change that. */
|
|
|
3470 |
|
|
|
3471 |
if ( !FT_CMap_New( (FT_CMap_Class)clazz,
|
|
|
3472 |
cmap, &charmap, &ttcmap ) )
|
|
|
3473 |
{
|
|
|
3474 |
/* it is simpler to directly set `flags' than adding */
|
|
|
3475 |
/* a parameter to FT_CMap_New */
|
|
|
3476 |
((TT_CMap)ttcmap)->flags = (FT_Int)error;
|
|
|
3477 |
}
|
|
|
3478 |
}
|
|
|
3479 |
else
|
|
|
3480 |
{
|
|
|
3481 |
FT_TRACE0(( "tt_face_build_cmaps:"
|
|
|
3482 |
" broken cmap sub-table ignored\n" ));
|
|
|
3483 |
}
|
|
|
3484 |
break;
|
|
|
3485 |
}
|
|
|
3486 |
}
|
|
|
3487 |
|
|
|
3488 |
if ( *pclazz == NULL )
|
|
|
3489 |
{
|
|
|
3490 |
FT_TRACE0(( "tt_face_build_cmaps:"
|
|
|
3491 |
" unsupported cmap sub-table ignored\n" ));
|
|
|
3492 |
}
|
|
|
3493 |
}
|
|
|
3494 |
}
|
|
|
3495 |
|
|
|
3496 |
return SFNT_Err_Ok;
|
|
|
3497 |
}
|
|
|
3498 |
|
|
|
3499 |
|
|
|
3500 |
FT_LOCAL( FT_Error )
|
|
|
3501 |
tt_get_cmap_info( FT_CharMap charmap,
|
|
|
3502 |
TT_CMapInfo *cmap_info )
|
|
|
3503 |
{
|
|
|
3504 |
FT_CMap cmap = (FT_CMap)charmap;
|
|
|
3505 |
TT_CMap_Class clazz = (TT_CMap_Class)cmap->clazz;
|
|
|
3506 |
|
|
|
3507 |
|
|
|
3508 |
return clazz->get_cmap_info( charmap, cmap_info );
|
|
|
3509 |
}
|
|
|
3510 |
|
|
|
3511 |
|
|
|
3512 |
/* END */
|