2729eafc |
1 | /* |
2 | * Support for sfnt-housed fonts for Halibut |
3 | * |
4 | * sfnt-housed fonts include TrueType, OpenType, sfnt-housed Type 1 |
5 | * fonts and a couple of bitmap formats. |
6 | * |
7 | * The various tables that can appear in sfnt-housed fonts are defined |
8 | * in several places. These include: |
9 | * |
10 | * The OpenType Specification: |
11 | * <http://partners.adobe.com/public/developer/opentype/index_spec.html> |
12 | * |
13 | * The TrueType Reference Manual: |
14 | * <http://developer.apple.com/textfonts/TTRefMan/> |
1a61f569 |
15 | * |
16 | * Microsoft typography specifications: |
17 | * <http://www.microsoft.com/typography/SpecificationsOverview.mspx> |
2729eafc |
18 | */ |
19 | |
20 | #include <assert.h> |
21 | #include <stddef.h> |
22 | #include <stdio.h> |
23 | #include <stdlib.h> |
24 | #include "halibut.h" |
25 | #include "paper.h" |
26 | |
27 | typedef struct sfnt_decode_Tag sfnt_decode; |
28 | struct sfnt_decode_Tag { |
29 | void (*decoder)(void *src, void *dest); |
30 | size_t src_len; |
31 | size_t dest_offset; |
32 | }; |
33 | |
18e7663a |
34 | #if 0 /* unused */ |
2729eafc |
35 | static void decode_uint8(void *src, void *dest) { |
36 | *(unsigned int *)dest = *(unsigned char *)src; |
37 | } |
38 | #define d_uint8 decode_uint8, 1 |
18e7663a |
39 | #endif |
2729eafc |
40 | |
18e7663a |
41 | #if 0 /* unused */ |
2729eafc |
42 | static void decode_int8(void *src, void *dest) { |
43 | *(int *)dest = *(signed char *)src; |
44 | } |
45 | #define d_int8 decode_int8, 1 |
18e7663a |
46 | #endif |
2729eafc |
47 | |
48 | static void decode_uint16(void *src, void *dest) { |
49 | unsigned char *cp = src; |
50 | *(unsigned int *)dest = (cp[0] << 8) + cp[1]; |
51 | } |
52 | #define d_uint16 decode_uint16, 2 |
53 | |
54 | static void decode_int16(void *src, void *dest) { |
55 | signed char *cp = src; |
56 | unsigned char *ucp = src; |
57 | *(int *)dest = (cp[0] << 8) + ucp[1]; |
58 | } |
59 | #define d_int16 decode_int16, 2 |
60 | |
61 | static void decode_uint32(void *src, void *dest) { |
62 | unsigned char *cp = src; |
63 | *(unsigned int *)dest = |
64 | (cp[0] << 24) + (cp[1] << 16) + (cp[2] << 8) + cp[3]; |
65 | } |
66 | #define d_uint32 decode_uint32, 4 |
67 | |
68 | static void decode_int32(void *src, void *dest) { |
69 | signed char *cp = src; |
70 | unsigned char *ucp = src; |
71 | *(int *)dest = (cp[0] << 24) + (ucp[1] << 16) + (ucp[2] << 8) + ucp[3]; |
72 | } |
73 | #define d_int32 decode_int32, 4 |
74 | |
75 | static void decode_skip(void *src, void *dest) { |
18e7663a |
76 | IGNORE(src); |
77 | IGNORE(dest); |
2729eafc |
78 | /* do nothing */ |
79 | } |
80 | #define d_skip(n) decode_skip, (n), 0 |
81 | |
82 | static void decode_end(void *src, void *dest) { |
18e7663a |
83 | IGNORE(src); |
84 | IGNORE(dest); |
2729eafc |
85 | /* never called */ |
86 | } |
87 | #define d_end decode_end, 0, 0 |
88 | |
89 | static void *decode(sfnt_decode *dec, void *src, void *end, void *dest) { |
90 | while (dec->decoder != decode_end) { |
91 | if ((char *)src + dec->src_len > (char *)end) return NULL; |
92 | dec->decoder(src, (char *)dest + dec->dest_offset); |
93 | src = (char *)src + dec->src_len; |
94 | dec++; |
95 | } |
96 | return src; |
97 | } |
98 | |
99 | static void *decoden(sfnt_decode *dec, void *src, void *end, void *dest, |
100 | size_t size, size_t n) { |
101 | while (n-- && src) { |
102 | src = decode(dec, src, end, dest); |
103 | dest = (char *)dest + size; |
104 | } |
105 | return src; |
106 | } |
107 | |
108 | /* Decoding specs for simple data types */ |
109 | sfnt_decode uint16_decode[] = { { d_uint16, 0 }, { d_end } }; |
110 | sfnt_decode int16_decode[] = { { d_int16, 0 }, { d_end } }; |
111 | sfnt_decode uint32_decode[] = { { d_uint32, 0 }, { d_end } }; |
112 | |
113 | /* Offset subdirectory -- the start of the file */ |
114 | typedef struct offsubdir_Tag offsubdir; |
115 | struct offsubdir_Tag { |
116 | unsigned scaler_type; |
117 | unsigned numTables; |
118 | }; |
119 | sfnt_decode offsubdir_decode[] = { |
120 | { d_uint32, offsetof(offsubdir, scaler_type) }, |
121 | { d_uint16, offsetof(offsubdir, numTables) }, |
122 | { d_skip(6) }, |
123 | { d_end } |
124 | }; |
125 | |
126 | #define sfnt_00010000 0x00010000 |
39d3d900 |
127 | #define TAG_OS_2 0x4f532f32 |
2729eafc |
128 | #define TAG_cmap 0x636d6170 |
129 | #define TAG_glyf 0x676c7966 |
130 | #define TAG_head 0x68656164 |
131 | #define TAG_hhea 0x68686561 |
132 | #define TAG_hmtx 0x686d7478 |
1a61f569 |
133 | #define TAG_kern 0x6b65726e |
2729eafc |
134 | #define TAG_loca 0x6c6f6361 |
135 | #define TAG_name 0x6e616d65 |
136 | #define TAG_post 0x706f7374 |
137 | #define sfnt_true 0x74727565 |
138 | |
139 | /* Table directory */ |
140 | typedef struct tabledir_Tag tabledir; |
141 | struct tabledir_Tag { |
142 | unsigned tag; |
143 | unsigned checkSum; |
144 | unsigned offset; |
145 | unsigned length; |
146 | }; |
147 | sfnt_decode tabledir_decode[] = { |
148 | { d_uint32, offsetof(tabledir, tag) }, |
149 | { d_uint32, offsetof(tabledir, checkSum) }, |
150 | { d_uint32, offsetof(tabledir, offset) }, |
151 | { d_uint32, offsetof(tabledir, length) }, |
152 | { d_end } |
153 | }; |
154 | |
39d3d900 |
155 | /* OS/2 and Windows compatibility table */ |
156 | typedef struct t_OS_2_Tag t_OS_2; |
157 | struct t_OS_2_Tag { |
158 | unsigned version; |
159 | int sTypoAscender, sTypoDescender; |
160 | int sxHeight, sCapHeight; |
161 | }; |
162 | sfnt_decode t_OS_2_v0_decode[] = { |
163 | { d_uint16, offsetof(t_OS_2, version) }, |
164 | { d_skip(66) }, /* xAvgCharWidth, usWeightClass, usWidthClass, fsType, */ |
165 | /* ySubscriptXSize, ySubscriptYSize, ySubscriptXOffset, */ |
166 | /* ySubscriptYOffset, ySuperscriptXSize, ySuperscriptYSize, */ |
167 | /* ySuperscriptXOffset, ySupercriptYOffset, sFamilyClass, panose, */ |
168 | /* ulUnicodeRange1, ulUnicodeRange2, ulUnicodeRange3, ulUnicodeRange4, */ |
169 | /* achVendID, fsSelection, usFirstCharIndex, usLastCharIndex */ |
170 | { d_end } |
171 | }; |
172 | sfnt_decode t_OS_2_v1_decode[] = { |
173 | { d_uint16, offsetof(t_OS_2, version) }, |
174 | { d_skip(66) }, /* xAvgCharWidth, usWeightClass, usWidthClass, fsType, */ |
175 | /* ySubscriptXSize, ySubscriptYSize, ySubscriptXOffset, */ |
176 | /* ySubscriptYOffset, ySuperscriptXSize, ySuperscriptYSize, */ |
177 | /* ySuperscriptXOffset, ySupercriptYOffset, sFamilyClass, panose, */ |
178 | /* ulUnicodeRange1, ulUnicodeRange2, ulUnicodeRange3, ulUnicodeRange4, */ |
179 | /* achVendID, fsSelection, usFirstCharIndex, usLastCharIndex */ |
180 | { d_int16, offsetof(t_OS_2, sTypoAscender) }, |
181 | { d_int16, offsetof(t_OS_2, sTypoDescender) }, |
182 | { d_skip(14) }, /* sTypoLineGap, usWinAscent, usWinDescent, */ |
183 | /* ulCodePageRange1, ulCodePageRange2 */ |
184 | { d_end } |
185 | }; |
186 | sfnt_decode t_OS_2_v2_decode[] = { |
187 | { d_uint16, offsetof(t_OS_2, version) }, |
188 | { d_skip(66) }, /* xAvgCharWidth, usWeightClass, usWidthClass, fsType, */ |
189 | /* ySubscriptXSize, ySubscriptYSize, ySubscriptXOffset, */ |
190 | /* ySubscriptYOffset, ySuperscriptXSize, ySuperscriptYSize, */ |
191 | /* ySuperscriptXOffset, ySupercriptYOffset, sFamilyClass, panose, */ |
192 | /* ulUnicodeRange1, ulUnicodeRange2, ulUnicodeRange3, ulUnicodeRange4, */ |
193 | /* achVendID, fsSelection, usFirstCharIndex, usLastCharIndex */ |
194 | { d_int16, offsetof(t_OS_2, sTypoAscender) }, |
195 | { d_int16, offsetof(t_OS_2, sTypoDescender) }, |
196 | { d_skip(14) }, /* sTypoLineGap, usWinAscent, usWinDescent, */ |
197 | /* ulCodePageRange1, ulCodePageRange2 */ |
198 | { d_int16, offsetof(t_OS_2, sxHeight) }, |
199 | { d_int16, offsetof(t_OS_2, sCapHeight) }, |
200 | { d_skip(6) }, /* usDefaultChar, usBreakChar, usMaxContext */ |
201 | { d_end } |
202 | }; |
203 | |
2729eafc |
204 | /* Character to Glyph ('cmap') table */ |
205 | typedef struct t_cmap_Tag t_cmap; |
206 | struct t_cmap_Tag { |
207 | unsigned numTables; |
208 | }; |
209 | sfnt_decode t_cmap_decode[] = { |
210 | { d_skip(2) }, |
211 | { d_uint16, offsetof(t_cmap, numTables) }, |
212 | { d_end } |
213 | }; |
214 | typedef struct encodingrec_Tag encodingrec; |
215 | struct encodingrec_Tag { |
216 | unsigned platformID; |
217 | unsigned encodingID; |
218 | unsigned offset; |
219 | }; |
220 | sfnt_decode encodingrec_decode[] = { |
221 | { d_uint16, offsetof(encodingrec, platformID) }, |
222 | { d_uint16, offsetof(encodingrec, encodingID) }, |
223 | { d_uint32, offsetof(encodingrec, offset) }, |
224 | { d_end } |
225 | }; |
226 | typedef struct cmap4_Tag cmap4; |
227 | struct cmap4_Tag { |
228 | unsigned length; |
229 | unsigned segCountX2; |
230 | }; |
231 | sfnt_decode cmap4_decode[] = { |
232 | { d_skip(2) }, /* format */ |
233 | { d_uint16, offsetof(cmap4, length) }, |
234 | { d_skip(2) }, /* language */ |
235 | { d_uint16, offsetof(cmap4, segCountX2) }, |
236 | { d_skip(6) }, /* searchRange, entrySelector, rangeShift */ |
237 | { d_end } |
238 | }; |
239 | |
240 | /* Font Header ('head') table */ |
241 | typedef struct t_head_Tag t_head; |
242 | struct t_head_Tag { |
243 | unsigned version; |
244 | unsigned fontRevision; |
245 | unsigned flags; |
246 | unsigned unitsPerEm; |
247 | int xMin, yMin, xMax, yMax; |
248 | int indexToLocFormat; |
249 | }; |
250 | sfnt_decode t_head_decode[] = { |
251 | { d_uint32, offsetof(t_head, version) }, |
252 | { d_uint32, offsetof(t_head, fontRevision) }, |
253 | { d_skip(8) }, /* checkSumAdjustment, magicNumber, flags */ |
254 | { d_uint16, offsetof(t_head, flags) }, |
255 | { d_uint16, offsetof(t_head, unitsPerEm) }, |
256 | { d_skip(16) }, /* created, modified */ |
257 | { d_int16, offsetof(t_head, xMin) }, |
258 | { d_int16, offsetof(t_head, yMin) }, |
259 | { d_int16, offsetof(t_head, xMax) }, |
260 | { d_int16, offsetof(t_head, yMax) }, |
261 | { d_skip(6) }, /* macStyle, lowestRecPPEM, fontDirectionHint */ |
262 | { d_int16, offsetof(t_head, indexToLocFormat) }, |
263 | { d_skip(2) }, |
264 | { d_end } |
265 | }; |
266 | |
267 | /* Horizontal Header ('hhea') table */ |
268 | typedef struct t_hhea_Tag t_hhea; |
269 | struct t_hhea_Tag { |
270 | unsigned version; |
271 | int ascent; |
272 | int descent; |
273 | int lineGap; |
274 | int metricDataFormat; |
275 | unsigned numOfLongHorMetrics; |
276 | }; |
277 | sfnt_decode t_hhea_decode[] = { |
278 | { d_uint32, offsetof(t_hhea, version) }, |
279 | { d_int16, offsetof(t_hhea, ascent) }, |
280 | { d_int16, offsetof(t_hhea, descent) }, |
281 | { d_int16, offsetof(t_hhea, lineGap) }, |
282 | { d_skip(22) }, |
283 | { d_int16, offsetof(t_hhea, metricDataFormat) }, |
284 | { d_uint16, offsetof(t_hhea, numOfLongHorMetrics) }, |
285 | { d_end } |
286 | }; |
287 | |
288 | /* Horizontal Metrics ('hmtx') table */ |
289 | sfnt_decode longhormetric_decode[] = { |
290 | { d_uint16, 0 }, |
291 | { d_skip(2) }, |
292 | { d_end } |
293 | }; |
294 | |
1a61f569 |
295 | /* Kerning ('kern') table */ |
296 | typedef struct t_kern_Tag t_kern; |
297 | struct t_kern_Tag { |
298 | unsigned version; |
299 | unsigned nTables; |
300 | }; |
301 | sfnt_decode t_kern_v0_decode[] = { |
302 | { d_uint16, offsetof(t_kern, version) }, |
303 | { d_uint16, offsetof(t_kern, nTables) }, |
304 | { d_end } |
305 | }; |
306 | typedef struct kern_v0_subhdr_Tag kern_v0_subhdr; |
307 | struct kern_v0_subhdr_Tag { |
308 | unsigned version; |
309 | unsigned length; |
310 | unsigned coverage; |
311 | }; |
312 | sfnt_decode kern_v0_subhdr_decode[] = { |
313 | { d_uint16, offsetof(kern_v0_subhdr, version) }, |
314 | { d_uint16, offsetof(kern_v0_subhdr, length) }, |
315 | { d_uint16, offsetof(kern_v0_subhdr, coverage) }, |
316 | { d_end } |
317 | }; |
318 | #define KERN_V0_HORIZ 0x0001 |
319 | #define KERN_V0_MINIMUM 0x0002 |
320 | #define KERN_V0_CROSSSTREAM 0x0004 |
321 | #define KERN_V0_OVERRIDE 0x0008 |
322 | #define KERN_V0_FORMAT 0xff00 |
323 | #define KERN_V0_FORMAT_0 0x0000 |
324 | sfnt_decode t_kern_v1_decode[] = { |
325 | { d_uint32, offsetof(t_kern, version) }, |
326 | { d_uint32, offsetof(t_kern, nTables) }, |
327 | { d_end } |
328 | }; |
329 | typedef struct kern_v1_subhdr_Tag kern_v1_subhdr; |
330 | struct kern_v1_subhdr_Tag { |
331 | unsigned length; |
332 | unsigned coverage; |
333 | }; |
334 | sfnt_decode kern_v1_subhdr_decode[] = { |
335 | { d_uint32, offsetof(kern_v1_subhdr, length) }, |
336 | { d_uint16, offsetof(kern_v1_subhdr, coverage) }, |
337 | { d_skip(2) }, /* tupleIndex */ |
338 | { d_end } |
339 | }; |
340 | #define KERN_V1_VERTICAL 0x8000 |
341 | #define KERN_V1_CROSSSTREAM 0x4000 |
342 | #define KERN_V1_VARIATION 0x2000 |
343 | #define KERN_V1_FORMAT 0x00ff |
344 | #define KERN_V1_FORMAT_0 0x0000 |
345 | typedef struct kern_f0_Tag kern_f0; |
346 | struct kern_f0_Tag { |
347 | unsigned nPairs; |
348 | }; |
349 | sfnt_decode kern_f0_decode[] = { |
350 | { d_uint16, offsetof(kern_f0, nPairs) }, |
351 | { d_skip(6) }, /* searchRange, entrySelector, rangeShift */ |
352 | { d_end } |
353 | }; |
354 | typedef struct kern_f0_pair_Tag kern_f0_pair; |
355 | struct kern_f0_pair_Tag { |
356 | unsigned left; |
357 | unsigned right; |
358 | int value; |
359 | }; |
360 | sfnt_decode kern_f0_pair_decode[] = { |
361 | { d_uint16, offsetof(kern_f0_pair, left) }, |
362 | { d_uint16, offsetof(kern_f0_pair, right) }, |
363 | { d_int16, offsetof(kern_f0_pair, value) }, |
364 | { d_end } |
365 | }; |
366 | |
2729eafc |
367 | /* Naming ('name') table */ |
368 | typedef struct t_name_Tag t_name; |
369 | typedef struct namerecord_Tag namerecord; |
370 | struct t_name_Tag { |
371 | unsigned format; |
372 | unsigned count; |
373 | unsigned stringOffset; |
374 | namerecord *nameRecord; |
375 | }; |
376 | sfnt_decode t_name_decode[] = { |
377 | { d_uint16, offsetof(t_name, format) }, |
378 | { d_uint16, offsetof(t_name, count) }, |
379 | { d_uint16, offsetof(t_name, stringOffset) }, |
380 | { d_end } |
381 | }; |
382 | struct namerecord_Tag { |
383 | unsigned platformID; |
384 | unsigned encodingID; |
385 | unsigned languageID; |
386 | unsigned nameID; |
387 | unsigned length; |
388 | unsigned offset; |
389 | }; |
390 | sfnt_decode namerecord_decode[] = { |
391 | { d_uint16, offsetof(namerecord, platformID) }, |
392 | { d_uint16, offsetof(namerecord, encodingID) }, |
393 | { d_uint16, offsetof(namerecord, languageID) }, |
394 | { d_uint16, offsetof(namerecord, nameID) }, |
395 | { d_uint16, offsetof(namerecord, length) }, |
396 | { d_uint16, offsetof(namerecord, offset) }, |
397 | { d_end } |
398 | }; |
399 | |
400 | /* PostScript compatibility ('post') table */ |
401 | typedef struct t_post_Tag t_post; |
402 | struct t_post_Tag { |
403 | unsigned format; |
47d88706 |
404 | int italicAngle; |
2729eafc |
405 | int underlinePosition; |
406 | int underlineThickness; |
407 | unsigned isFixedPitch; |
408 | unsigned minMemType42; |
409 | unsigned maxMemType42; |
410 | }; |
411 | sfnt_decode t_post_decode[] = { |
412 | { d_uint32, offsetof(t_post, format) }, |
47d88706 |
413 | { d_int32, offsetof(t_post, italicAngle) }, |
2729eafc |
414 | { d_int16, offsetof(t_post, underlinePosition) }, |
415 | { d_int16, offsetof(t_post, underlineThickness) }, |
416 | { d_uint32, offsetof(t_post, isFixedPitch) }, |
417 | { d_uint32, offsetof(t_post, minMemType42) }, |
418 | { d_uint32, offsetof(t_post, maxMemType42) }, |
419 | { d_skip(8) }, /* minMemType1, maxMemType1 */ |
420 | { d_end } |
421 | }; |
422 | |
423 | typedef struct { |
424 | glyph name; |
425 | unsigned short index; |
426 | } glyphmap; |
427 | |
2729eafc |
428 | struct sfnt_Tag { |
429 | void *data; |
430 | size_t len; |
431 | void *end; |
d41ae9ad |
432 | filepos pos; |
2729eafc |
433 | offsubdir osd; |
434 | tabledir *td; |
435 | t_head head; |
436 | unsigned nglyphs; |
437 | glyph *glyphsbyindex; |
438 | unsigned short *glyphsbyname; |
439 | unsigned minmem, maxmem; |
440 | }; |
441 | |
442 | static int sfnt_findtable(sfnt *sf, unsigned tag, |
443 | void **startp, void **endp) { |
444 | size_t i; |
445 | |
446 | for (i = 0; i < sf->osd.numTables; i++) { |
447 | if (sf->td[i].tag == tag) { |
448 | *startp = (char *)sf->data + sf->td[i].offset; |
449 | *endp = (char *)*startp + sf->td[i].length; |
450 | return TRUE; |
451 | } |
452 | } |
453 | return FALSE; |
454 | } |
455 | |
456 | static char *sfnt_psname(font_info *fi) { |
457 | sfnt *sf = fi->fontfile; |
458 | t_name name; |
459 | void *ptr, *end; |
460 | size_t i; |
461 | char *psname; |
462 | namerecord *nr; |
463 | |
d41ae9ad |
464 | if (!sfnt_findtable(sf, TAG_name, &ptr, &end)) { |
465 | error(err_sfntnotable, &sf->pos, "name"); |
466 | return NULL; |
467 | } |
2729eafc |
468 | ptr = decode(t_name_decode, ptr, end, &name); |
469 | name.nameRecord = snewn(name.count, namerecord); |
470 | ptr = decoden(namerecord_decode, ptr, sf->end, name.nameRecord, |
471 | sizeof(*name.nameRecord), name.count); |
472 | for (i = 0; i < name.count; i++) { |
473 | nr = name.nameRecord + i; |
474 | if (nr->nameID == 6) { |
475 | /* PostScript name, but can we make sense of it? */ |
476 | if (nr->platformID == 1 && nr->encodingID == 0) { |
477 | /* Mac Roman, which is ASCII for our purposes */ |
478 | psname = snewn(nr->length + 1, char); |
479 | memcpy(psname, (char *)ptr + nr->offset, nr->length); |
480 | psname[nr->length] = 0; |
481 | sfree(name.nameRecord); |
482 | return psname; |
483 | } |
484 | } |
485 | } |
d41ae9ad |
486 | error(err_sfntnopsname, &sf->pos); |
2729eafc |
487 | return NULL; |
488 | } |
489 | |
47d88706 |
490 | static unsigned short *cmp_glyphsbyindex; |
491 | static int glyphsbyname_cmp(void const *a, void const *b) { |
492 | glyph ga = cmp_glyphsbyindex[*(unsigned short *)a]; |
493 | glyph gb = cmp_glyphsbyindex[*(unsigned short *)b]; |
494 | if (ga < gb) return -1; |
495 | if (ga > gb) return 1; |
496 | return 0; |
497 | } |
498 | static int glyphsbyname_cmp_search(void const *a, void const *b) { |
499 | glyph ga = *(glyph *)a; |
500 | glyph gb = cmp_glyphsbyindex[*(unsigned short *)b]; |
501 | if (ga < gb) return -1; |
502 | if (ga > gb) return 1; |
503 | return 0; |
504 | } |
505 | |
2729eafc |
506 | /* |
507 | * Extract data from the 'post' table (mostly glyph mappings) |
508 | * |
509 | * TODO: cope better with duplicated glyph names (usually .notdef) |
510 | * TODO: when presented with format 3.0, try to use 'CFF' if present. |
511 | */ |
47d88706 |
512 | static void sfnt_mapglyphs(font_info *fi) { |
513 | sfnt *sf = fi->fontfile; |
2729eafc |
514 | t_post post; |
515 | void *ptr, *end; |
18e7663a |
516 | unsigned char *sptr; |
517 | char tmp[256]; |
2729eafc |
518 | glyph *extraglyphs; |
519 | unsigned nextras, i, g; |
520 | |
521 | sf->glyphsbyname = sf->glyphsbyindex = NULL; |
d41ae9ad |
522 | if (!sfnt_findtable(sf, TAG_post, &ptr, &end)) { |
523 | error(err_sfntnotable, &sf->pos, "post"); |
524 | return; |
525 | } |
2729eafc |
526 | ptr = decode(t_post_decode, ptr, end, &post); |
d41ae9ad |
527 | if (ptr == NULL) { |
528 | error(err_sfntbadtable, &sf->pos, "post"); |
529 | return; |
530 | } |
47d88706 |
531 | |
2729eafc |
532 | sf->minmem = post.minMemType42; |
533 | sf->maxmem = post.maxMemType42; |
47d88706 |
534 | fi->italicangle = post.italicAngle / 65536.0; |
2729eafc |
535 | switch (post.format) { |
536 | case 0x00010000: |
537 | sf->nglyphs = 258; |
538 | sf->glyphsbyindex = (glyph *)tt_std_glyphs; |
539 | break; |
540 | case 0x00020000: |
18e7663a |
541 | if ((char *)ptr + 2 > (char *)end) return; |
2729eafc |
542 | decode_uint16(ptr, &sf->nglyphs); |
543 | ptr = (char *)ptr + 2; |
18e7663a |
544 | if ((char *)ptr + 2*sf->nglyphs > (char *)end) return; |
2729eafc |
545 | nextras = 0; |
18e7663a |
546 | for (sptr = (unsigned char *)ptr + 2*sf->nglyphs; |
547 | sptr < (unsigned char *)end; |
548 | sptr += *sptr+1) |
2729eafc |
549 | nextras++; |
550 | extraglyphs = snewn(nextras, glyph); |
551 | i = 0; |
18e7663a |
552 | for (sptr = (unsigned char *)ptr + 2*sf->nglyphs; |
553 | sptr < (unsigned char *)end; |
554 | sptr += *sptr+1) { |
2729eafc |
555 | memcpy(tmp, sptr + 1, *sptr); |
556 | tmp[*sptr] = 0; |
557 | assert(i < nextras); |
558 | extraglyphs[i++] = glyph_intern(tmp); |
559 | } |
560 | sf->glyphsbyindex = snewn(sf->nglyphs, glyph); |
561 | for (i = 0; i < sf->nglyphs; i++) { |
562 | decode_uint16((char *)ptr + 2*i, &g); |
563 | if (g <= 257) |
564 | sf->glyphsbyindex[i] = tt_std_glyphs[g]; |
565 | else if (g < 258 + nextras) |
566 | sf->glyphsbyindex[i] = extraglyphs[g - 258]; |
567 | else |
568 | sf->glyphsbyindex[i] = NOGLYPH; |
569 | } |
570 | sfree(extraglyphs); |
571 | break; |
572 | default: |
d41ae9ad |
573 | error(err_sfnttablevers, &sf->pos, "post"); |
574 | return; |
2729eafc |
575 | } |
47d88706 |
576 | /* Construct glyphsbyname */ |
577 | sf->glyphsbyname = snewn(sf->nglyphs, unsigned short); |
578 | for (i = 0; i < sf->nglyphs; i++) |
579 | sf->glyphsbyname[i] = i; |
580 | cmp_glyphsbyindex = sf->glyphsbyindex; |
581 | qsort(sf->glyphsbyname, sf->nglyphs, sizeof(*sf->glyphsbyname), |
582 | glyphsbyname_cmp); |
583 | } |
584 | |
e7d4c88f |
585 | glyph sfnt_indextoglyph(sfnt *sf, unsigned idx) { |
47d88706 |
586 | return sf->glyphsbyindex[idx]; |
587 | } |
588 | |
e7d4c88f |
589 | unsigned sfnt_nglyphs(sfnt *sf) { |
590 | return sf->nglyphs; |
591 | } |
592 | |
593 | unsigned sfnt_glyphtoindex(sfnt *sf, glyph g) { |
47d88706 |
594 | cmp_glyphsbyindex = sf->glyphsbyindex; |
595 | return *(unsigned short *)bsearch(&g, sf->glyphsbyname, sf->nglyphs, |
596 | sizeof(*sf->glyphsbyname), |
597 | glyphsbyname_cmp_search); |
2729eafc |
598 | } |
599 | |
600 | /* |
39d3d900 |
601 | * Get data from 'hhea', 'hmtx', and 'OS/2' tables |
2729eafc |
602 | */ |
603 | void sfnt_getmetrics(font_info *fi) { |
604 | sfnt *sf = fi->fontfile; |
605 | t_hhea hhea; |
39d3d900 |
606 | t_OS_2 OS_2; |
2729eafc |
607 | void *ptr, *end; |
608 | unsigned i, j; |
609 | unsigned *hmtx; |
610 | |
39d3d900 |
611 | /* First, the bounding box from the 'head' table. */ |
612 | fi->fontbbox[0] = sf->head.xMin * FUNITS_PER_PT / sf->head.unitsPerEm; |
613 | fi->fontbbox[1] = sf->head.yMin * FUNITS_PER_PT / sf->head.unitsPerEm; |
614 | fi->fontbbox[2] = sf->head.xMax * FUNITS_PER_PT / sf->head.unitsPerEm; |
615 | fi->fontbbox[3] = sf->head.yMax * FUNITS_PER_PT / sf->head.unitsPerEm; |
d41ae9ad |
616 | if (!sfnt_findtable(sf, TAG_hhea, &ptr, &end)) { |
617 | error(err_sfntnotable, &sf->pos, "hhea"); |
618 | return; |
619 | } |
620 | if (decode(t_hhea_decode, ptr, end, &hhea) == NULL) { |
621 | error(err_sfntbadtable, &sf->pos, "hhea"); |
622 | return; |
623 | } |
624 | if ((hhea.version & 0xffff0000) != 0x00010000) { |
625 | error(err_sfnttablevers, &sf->pos, "hhea"); |
626 | return; |
627 | } |
2729eafc |
628 | fi->ascent = hhea.ascent; |
629 | fi->descent = hhea.descent; |
d41ae9ad |
630 | if (hhea.metricDataFormat != 0) { |
631 | error(err_sfnttablevers, &sf->pos, "hmtx"); |
632 | return; |
633 | } |
634 | if (!sfnt_findtable(sf, TAG_hmtx, &ptr, &end)) { |
635 | error(err_sfntnotable, &sf->pos, "hmtx"); |
636 | return; |
637 | } |
2729eafc |
638 | hmtx = snewn(hhea.numOfLongHorMetrics, unsigned); |
639 | if (decoden(longhormetric_decode, ptr, end, hmtx, sizeof(*hmtx), |
d41ae9ad |
640 | hhea.numOfLongHorMetrics) == NULL) { |
641 | error(err_sfntbadtable, &sf->pos, "hmtx"); |
642 | return; |
643 | } |
2729eafc |
644 | for (i = 0; i < sf->nglyphs; i++) { |
645 | glyph_width *w = snew(glyph_width); |
47d88706 |
646 | w->glyph = sfnt_indextoglyph(sf, i); |
2729eafc |
647 | j = i < hhea.numOfLongHorMetrics ? i : hhea.numOfLongHorMetrics - 1; |
648 | w->width = hmtx[j] * UNITS_PER_PT / sf->head.unitsPerEm; |
649 | add234(fi->widths, w); |
650 | } |
39d3d900 |
651 | /* Now see if the 'OS/2' table has any useful metrics */ |
652 | if (!sfnt_findtable(sf, TAG_OS_2, &ptr, &end)) |
653 | return; |
654 | if (decode(uint16_decode, ptr, end, &OS_2.version) == NULL) |
d41ae9ad |
655 | goto bados2; |
39d3d900 |
656 | if (OS_2.version >= 2) { |
657 | if (decode(t_OS_2_v2_decode, ptr, end, &OS_2) == NULL) |
d41ae9ad |
658 | goto bados2; |
39d3d900 |
659 | fi->xheight = OS_2.sxHeight * FUNITS_PER_PT / sf->head.unitsPerEm; |
660 | fi->capheight = OS_2.sCapHeight * FUNITS_PER_PT / sf->head.unitsPerEm; |
661 | } else if (OS_2.version == 1) { |
662 | if (decode(t_OS_2_v1_decode, ptr, end, &OS_2) == NULL) |
d41ae9ad |
663 | goto bados2; |
39d3d900 |
664 | } else |
665 | return; |
666 | fi->ascent = OS_2.sTypoAscender * FUNITS_PER_PT / sf->head.unitsPerEm; |
667 | fi->descent = OS_2.sTypoDescender * FUNITS_PER_PT / sf->head.unitsPerEm; |
d41ae9ad |
668 | return; |
669 | bados2: |
670 | error(err_sfntbadtable, &sf->pos, "OS/2"); |
2729eafc |
671 | } |
672 | |
673 | /* |
1a61f569 |
674 | * Get kerning data from a 'kern' table |
675 | * |
676 | * 'kern' tables have two gratuitously different header formats, one |
677 | * used by Apple and one by Microsoft. Happily, the kerning tables |
678 | * themselves use the same formats. Halibut only supports simple kern |
679 | * pairs for horizontal kerning of horizontal text, and ignores |
680 | * everything else. |
681 | */ |
682 | static void sfnt_getkern(font_info *fi) { |
683 | sfnt *sf = fi->fontfile; |
684 | t_kern kern; |
685 | unsigned version, i, j; |
686 | void *ptr, *end; |
687 | |
688 | if (!sfnt_findtable(sf, TAG_kern, &ptr, &end)) |
689 | return; |
690 | if (!decode(uint16_decode, ptr, end, &version)) |
d41ae9ad |
691 | goto bad; |
1a61f569 |
692 | if (version == 0) |
693 | ptr = decode(t_kern_v0_decode, ptr, end, &kern); |
694 | else if (version == 1) |
695 | ptr = decode(t_kern_v1_decode, ptr, end, &kern); |
696 | else return; |
d41ae9ad |
697 | if (ptr == NULL) goto bad; |
1a61f569 |
698 | for (i = 0; i < kern.nTables; i++) { |
699 | kern_f0 f0; |
700 | kern_pair *kerns; |
701 | if (version == 0) { |
702 | kern_v0_subhdr sub; |
703 | ptr = decode(kern_v0_subhdr_decode, ptr, end, &sub); |
d41ae9ad |
704 | if (ptr == NULL) goto bad; |
1a61f569 |
705 | if (sub.version != 0 || |
706 | (sub.coverage & (KERN_V0_HORIZ | KERN_V0_MINIMUM | |
707 | KERN_V0_CROSSSTREAM | KERN_V0_FORMAT)) != |
708 | (KERN_V0_HORIZ | KERN_V0_FORMAT_0)) { |
709 | ptr = (char *)ptr + sub.length - 6; |
710 | continue; |
711 | } |
712 | } else { |
713 | kern_v1_subhdr sub; |
714 | ptr = decode(kern_v1_subhdr_decode, ptr, end, &sub); |
d41ae9ad |
715 | if (ptr == NULL) goto bad; |
1a61f569 |
716 | if ((sub.coverage & (KERN_V1_VERTICAL | KERN_V1_CROSSSTREAM | |
717 | KERN_V1_VARIATION | KERN_V1_FORMAT)) != |
718 | KERN_V0_FORMAT_0) { |
719 | ptr = (char *)ptr + sub.length - 8; |
720 | continue; |
721 | } |
722 | } |
723 | ptr = decode(kern_f0_decode, ptr, end, &f0); |
d41ae9ad |
724 | if (ptr == NULL) goto bad; |
1a61f569 |
725 | kerns = snewn(f0.nPairs, kern_pair); |
726 | for (j = 0; j < f0.nPairs; j++) { |
727 | kern_f0_pair p; |
728 | kern_pair *kp = kerns + j; |
729 | ptr = decode(kern_f0_pair_decode, ptr, end, &p); |
d41ae9ad |
730 | if (ptr == NULL) goto bad; |
731 | if (p.left >= sf->nglyphs || p.right >= sf->nglyphs) goto bad; |
1a61f569 |
732 | kp->left = sfnt_indextoglyph(sf, p.left); |
733 | kp->right = sfnt_indextoglyph(sf, p.right); |
734 | kp->kern = p.value * UNITS_PER_PT / (int)sf->head.unitsPerEm; |
735 | add234(fi->kerns, kp); |
736 | } |
737 | } |
d41ae9ad |
738 | return; |
739 | bad: |
740 | error(err_sfntbadtable, &sf->pos, "kern"); |
741 | return; |
1a61f569 |
742 | } |
743 | |
744 | /* |
2729eafc |
745 | * Get mapping data from 'cmap' table |
746 | * |
d274495f |
747 | * We look for either a (0, 3), or (3, 1) table, both of these being |
748 | * versions of UCS-2. We only handle format 4 of this table, since |
749 | * that seems to be the only one in use. |
2729eafc |
750 | */ |
751 | void sfnt_getmap(font_info *fi) { |
752 | sfnt *sf = fi->fontfile; |
753 | t_cmap cmap; |
754 | encodingrec *esd; |
755 | void *base, *ptr, *end; |
756 | unsigned i; |
757 | unsigned format; |
758 | |
759 | |
760 | for (i = 0; i < lenof(fi->bmp); i++) |
761 | fi->bmp[i] = 0xFFFF; |
d41ae9ad |
762 | if (!sfnt_findtable(sf, TAG_cmap, &ptr, &end)) { |
763 | error(err_sfntnotable, &sf->pos, "cmap"); |
764 | } |
2729eafc |
765 | base = ptr; |
766 | ptr = decode(t_cmap_decode, ptr, end, &cmap); |
d41ae9ad |
767 | if (ptr == NULL) goto bad; |
2729eafc |
768 | esd = snewn(cmap.numTables, encodingrec); |
769 | ptr = decoden(encodingrec_decode, ptr, end, esd, sizeof(*esd), |
770 | cmap.numTables); |
d41ae9ad |
771 | if (ptr == NULL) goto bad; |
2729eafc |
772 | for (i = 0; i < cmap.numTables; i++) { |
773 | if (!decode(uint16_decode, (char *)base + esd[i].offset, end, &format)) |
d41ae9ad |
774 | goto bad; |
2729eafc |
775 | if ((esd[i].platformID == 0 && esd[i].encodingID == 3) || |
776 | (esd[i].platformID == 3 && esd[i].encodingID == 1)) { |
777 | /* UCS-2 encoding */ |
778 | if (!decode(uint16_decode, (char *)base + esd[i].offset, end, |
779 | &format)) |
d41ae9ad |
780 | goto bad; |
2729eafc |
781 | if (format == 4) { |
782 | unsigned *data, *endCode, *startCode, *idDelta, *idRangeOffset; |
783 | unsigned *glyphIndexArray; |
784 | unsigned segcount, nword, nglyphindex, j; |
785 | cmap4 cmap4; |
786 | |
787 | ptr = decode(cmap4_decode, (char *)base + esd[i].offset, end, |
788 | &cmap4); |
d41ae9ad |
789 | if (!ptr) goto bad; |
2729eafc |
790 | segcount = cmap4.segCountX2 / 2; |
791 | nword = cmap4.length / 2 - 7; |
792 | data = snewn(nword, unsigned); |
793 | if (!decoden(uint16_decode, ptr, (char *)ptr + nword * 2, |
d41ae9ad |
794 | data, sizeof(*data), nword)) goto bad; |
2729eafc |
795 | endCode = data; |
796 | startCode = data + segcount + 1; |
797 | idDelta = startCode + segcount; |
798 | idRangeOffset = idDelta + segcount; |
799 | glyphIndexArray = idRangeOffset + segcount; |
800 | nglyphindex = nword - segcount * 4 - 1; |
801 | |
802 | for (j = 0; j < segcount; j++) { |
803 | unsigned k, idx; |
804 | |
805 | if (idRangeOffset[j] == 0) { |
806 | for (k = startCode[j]; k <= endCode[j]; k++) { |
807 | idx = (k + idDelta[j]) & 0xffff; |
808 | if (idx != 0) { |
d41ae9ad |
809 | if (idx > sf->nglyphs) goto bad; |
47d88706 |
810 | fi->bmp[k] = sfnt_indextoglyph(sf, idx); |
2729eafc |
811 | } |
812 | } |
813 | } else { |
814 | unsigned startidx = idRangeOffset[j]/2 - segcount + j; |
815 | for (k = startCode[j]; k <= endCode[j]; k++) { |
816 | idx = glyphIndexArray[startidx + k - startCode[j]]; |
817 | if (idx != 0) { |
818 | idx = (idx + idDelta[j]) & 0xffff; |
d41ae9ad |
819 | if (idx > sf->nglyphs) goto bad; |
47d88706 |
820 | fi->bmp[k] = sfnt_indextoglyph(sf, idx); |
2729eafc |
821 | } |
822 | } |
823 | } |
824 | } |
2729eafc |
825 | sfree(data); |
d41ae9ad |
826 | return; |
2729eafc |
827 | } |
828 | } |
829 | } |
d41ae9ad |
830 | error(err_sfntnounicmap, &sf->pos); |
831 | return; |
832 | bad: |
833 | error(err_sfntbadtable, &sf->pos, "cmap"); |
2729eafc |
834 | } |
835 | |
836 | void read_sfnt_file(input *in) { |
837 | sfnt *sf = snew(sfnt); |
838 | size_t off = 0, got; |
839 | FILE *fp = in->currfp; |
840 | font_info *fi = snew(font_info); |
2729eafc |
841 | void *ptr, *end; |
842 | |
843 | fi->name = NULL; |
844 | fi->widths = newtree234(width_cmp); |
845 | fi->kerns = newtree234(kern_cmp); |
846 | fi->ligs = newtree234(lig_cmp); |
847 | fi->fontbbox[0] = fi->fontbbox[1] = fi->fontbbox[2] = fi->fontbbox[3] = 0; |
848 | fi->capheight = fi->xheight = fi->ascent = fi->descent = 0; |
849 | fi->stemh = fi->stemv = fi->italicangle = 0; |
850 | fi->fontfile = sf; |
851 | fi->filetype = TRUETYPE; |
852 | |
853 | sf->len = 32768; |
854 | sf->data = snewn(sf->len, unsigned char); |
855 | for (;;) { |
856 | got = fread((char *)sf->data + off, 1, sf->len - off, fp); |
857 | off += got; |
858 | if (off != sf->len) break; |
859 | sf->len *= 2; |
860 | sf->data = sresize(sf->data, sf->len, unsigned char); |
861 | } |
d41ae9ad |
862 | fclose(in->currfp); |
2729eafc |
863 | sf->len = off; |
864 | sf->data = sresize(sf->data, sf->len, unsigned char); |
865 | sf->end = (char *)sf->data + sf->len; |
d41ae9ad |
866 | sf->pos = in->pos; |
867 | sf->pos.line = 0; |
868 | sf->nglyphs = 0; |
869 | ptr = decode(offsubdir_decode, sf->data, sf->end, &sf->osd); |
870 | if (ptr == NULL) { |
871 | error(err_sfntbadhdr, &sf->pos); |
872 | return; |
873 | } |
2729eafc |
874 | sf->td = snewn(sf->osd.numTables, tabledir); |
d41ae9ad |
875 | ptr = decoden(tabledir_decode, ptr, sf->end, sf->td, sizeof(*sf->td), |
876 | sf->osd.numTables); |
877 | if (ptr == NULL) { |
878 | error(err_sfntbadhdr, &sf->pos); |
879 | return; |
880 | } |
881 | if (!sfnt_findtable(sf, TAG_head, &ptr, &end)) { |
882 | error(err_sfntnotable, &sf->pos, "head"); |
883 | return; |
884 | } |
885 | if (decode(t_head_decode, ptr, end, &sf->head) == NULL) { |
886 | error(err_sfntbadtable, &sf->pos, "head"); |
887 | return; |
888 | } |
889 | if ((sf->head.version & 0xffff0000) != 0x00010000) { |
890 | error(err_sfnttablevers, &sf->pos, "head"); |
891 | return; |
892 | } |
2729eafc |
893 | fi->name = sfnt_psname(fi); |
d41ae9ad |
894 | if (fi->name == NULL) return; |
47d88706 |
895 | sfnt_mapglyphs(fi); |
2729eafc |
896 | sfnt_getmetrics(fi); |
1a61f569 |
897 | sfnt_getkern(fi); |
2729eafc |
898 | sfnt_getmap(fi); |
899 | fi->next = all_fonts; |
900 | all_fonts = fi; |
2729eafc |
901 | } |
902 | |
903 | static int sizecmp(const void *a, const void *b) { |
904 | if (*(size_t *)a < *(size_t *)b) return -1; |
905 | if (*(size_t *)a > *(size_t *)b) return 1; |
906 | return 0; |
907 | } |
908 | |
909 | /* |
910 | * The format for embedding TrueType fonts in Postscript is defined in |
911 | * Adobe Technical Note #5012: The Type 42 Font Format Specification. |
912 | * <http://partners.adobe.com/public/developer/en/font/5012.Type42_Spec.pdf> |
913 | */ |
914 | |
915 | void sfnt_writeps(font_info const *fi, FILE *ofp) { |
916 | unsigned i, j, lastbreak; |
917 | sfnt *sf = fi->fontfile; |
918 | size_t *breaks, glyfoff, glyflen; |
919 | void *glyfptr, *glyfend, *locaptr, *locaend; |
920 | unsigned *loca; |
c358bf5b |
921 | int cc = 0; |
2729eafc |
922 | |
923 | /* XXX Unclear that this is the correct format. */ |
924 | fprintf(ofp, "%%!PS-TrueTypeFont-%u-%u\n", sf->osd.scaler_type, |
925 | sf->head.fontRevision); |
926 | if (sf->minmem) |
927 | fprintf(ofp, "%%%%VMUsage: %u %u\n", sf->minmem, sf->maxmem); |
928 | fprintf(ofp, "9 dict dup begin\n"); |
929 | fprintf(ofp, "/FontType 42 def\n"); |
930 | fprintf(ofp, "/FontMatrix [1 0 0 1 0 0] def\n"); |
931 | fprintf(ofp, "/FontName /%s def\n", fi->name); |
932 | fprintf(ofp, "/Encoding StandardEncoding def\n"); |
933 | if ((sf->head.flags & 0x0003) == 0x0003) { |
934 | /* |
935 | * Sensible font with the origin in the right place, such that |
936 | * the bounding box is meaningful. |
937 | */ |
938 | fprintf(ofp, "/FontBBox [%g %g %g %g] readonly def\n", |
939 | (double)sf->head.xMin / sf->head.unitsPerEm, |
940 | (double)sf->head.yMin / sf->head.unitsPerEm, |
941 | (double)sf->head.xMax / sf->head.unitsPerEm, |
942 | (double)sf->head.yMax / sf->head.unitsPerEm); |
943 | } else { |
944 | /* Non-sensible font. */ |
b554f0ec |
945 | fprintf(ofp, "/FontBBox [0 0 0 0] readonly def\n"); |
2729eafc |
946 | } |
947 | fprintf(ofp, "/PaintType 0 def\n"); |
948 | fprintf(ofp, "/CharStrings %u dict dup begin\n", sf->nglyphs); |
a2bd2219 |
949 | fprintf(ofp, "0 1 %u{currentfile token pop exch def}bind for\n", |
950 | sf->nglyphs - 1); |
2729eafc |
951 | for (i = 0; i < sf->nglyphs; i++) |
c358bf5b |
952 | ps_token(ofp, &cc, "/%s", glyph_extern(sfnt_indextoglyph(sf, i))); |
953 | fprintf(ofp, "\nend readonly def\n"); |
2729eafc |
954 | fprintf(ofp, "/sfnts [<"); |
955 | breaks = snewn(sf->osd.numTables + sf->nglyphs, size_t); |
956 | for (i = 0; i < sf->osd.numTables; i++) { |
957 | breaks[i] = sf->td[i].offset; |
958 | } |
d41ae9ad |
959 | if (!sfnt_findtable(sf, TAG_glyf, &glyfptr, &glyfend)) { |
4691e240 |
960 | error(err_sfntnotable, &sf->pos, "glyf"); |
d41ae9ad |
961 | return; |
962 | } |
2729eafc |
963 | glyfoff = (char *)glyfptr - (char *)sf->data; |
964 | glyflen = (char *)glyfend - (char *)glyfptr; |
d41ae9ad |
965 | if (!sfnt_findtable(sf, TAG_loca, &locaptr, &locaend)) { |
4691e240 |
966 | error(err_sfntnotable, &sf->pos, "loca"); |
d41ae9ad |
967 | return; |
968 | } |
2729eafc |
969 | loca = snewn(sf->nglyphs, unsigned); |
970 | if (sf->head.indexToLocFormat == 0) { |
971 | if (!decoden(uint16_decode, locaptr, locaend, loca, sizeof(*loca), |
d41ae9ad |
972 | sf->nglyphs)) goto badloca; |
2729eafc |
973 | for (i = 0; i < sf->nglyphs; i++) loca[i] *= 2; |
974 | } else { |
975 | if (!decoden(uint32_decode, locaptr, locaend, loca, sizeof(*loca), |
d41ae9ad |
976 | sf->nglyphs)) goto badloca; |
2729eafc |
977 | } |
978 | for (i = 1; i < sf->nglyphs; i++) { |
d41ae9ad |
979 | if (loca[i] > glyflen) goto badloca; |
2729eafc |
980 | breaks[sf->osd.numTables + i - 1] = loca[i] + glyfoff; |
981 | } |
982 | breaks[sf->osd.numTables + sf->nglyphs - 1] = sf->len; |
983 | qsort(breaks, sf->osd.numTables + sf->nglyphs, sizeof(*breaks), sizecmp); |
984 | j = lastbreak = 0; |
985 | for (i = 0; i < sf->len; i++) { |
986 | if ((i - lastbreak) % 38 == 0) fprintf(ofp, "\n"); |
987 | if (i == breaks[j]) { |
988 | while (i == breaks[j]) j++; |
989 | lastbreak = i; |
990 | fprintf(ofp, "00><\n"); |
991 | } |
992 | fprintf(ofp, "%02x", *((unsigned char *)sf->data + i)); |
993 | } |
994 | fprintf(ofp, "00>] readonly def\n"); |
995 | sfree(breaks); |
996 | fprintf(ofp, "end /%s exch definefont\n", fi->name); |
d41ae9ad |
997 | return; |
998 | badloca: |
999 | error(err_sfntbadtable, &sf->pos, "loca"); |
2729eafc |
1000 | } |
dde3b989 |
1001 | |
dde3b989 |
1002 | void sfnt_data(font_info *fi, char **bufp, size_t *lenp) { |
1003 | sfnt *sf = fi->fontfile; |
1004 | *bufp = sf->data; |
1005 | *lenp = sf->len; |
1006 | } |