2 * Support for sfnt-housed fonts for Halibut
4 * sfnt-housed fonts include TrueType, OpenType, sfnt-housed Type 1
5 * fonts and a couple of bitmap formats.
7 * The various tables that can appear in sfnt-housed fonts are defined
8 * in several places. These include:
10 * The OpenType Specification:
11 * <http://partners.adobe.com/public/developer/opentype/index_spec.html>
13 * The TrueType Reference Manual:
14 * <http://developer.apple.com/textfonts/TTRefMan/>
24 typedef struct sfnt_decode_Tag sfnt_decode
;
25 struct sfnt_decode_Tag
{
26 void (*decoder
)(void *src
, void *dest
);
32 static void decode_uint8(void *src
, void *dest
) {
33 *(unsigned int *)dest
= *(unsigned char *)src
;
35 #define d_uint8 decode_uint8, 1
39 static void decode_int8(void *src
, void *dest
) {
40 *(int *)dest
= *(signed char *)src
;
42 #define d_int8 decode_int8, 1
45 static void decode_uint16(void *src
, void *dest
) {
46 unsigned char *cp
= src
;
47 *(unsigned int *)dest
= (cp
[0] << 8) + cp
[1];
49 #define d_uint16 decode_uint16, 2
51 static void decode_int16(void *src
, void *dest
) {
52 signed char *cp
= src
;
53 unsigned char *ucp
= src
;
54 *(int *)dest
= (cp
[0] << 8) + ucp
[1];
56 #define d_int16 decode_int16, 2
58 static void decode_uint32(void *src
, void *dest
) {
59 unsigned char *cp
= src
;
60 *(unsigned int *)dest
=
61 (cp
[0] << 24) + (cp
[1] << 16) + (cp
[2] << 8) + cp
[3];
63 #define d_uint32 decode_uint32, 4
65 static void decode_int32(void *src
, void *dest
) {
66 signed char *cp
= src
;
67 unsigned char *ucp
= src
;
68 *(int *)dest
= (cp
[0] << 24) + (ucp
[1] << 16) + (ucp
[2] << 8) + ucp
[3];
70 #define d_int32 decode_int32, 4
72 static void decode_skip(void *src
, void *dest
) {
77 #define d_skip(n) decode_skip, (n), 0
79 static void decode_end(void *src
, void *dest
) {
84 #define d_end decode_end, 0, 0
86 static void *decode(sfnt_decode
*dec
, void *src
, void *end
, void *dest
) {
87 while (dec
->decoder
!= decode_end
) {
88 if ((char *)src
+ dec
->src_len
> (char *)end
) return NULL
;
89 dec
->decoder(src
, (char *)dest
+ dec
->dest_offset
);
90 src
= (char *)src
+ dec
->src_len
;
96 static void *decoden(sfnt_decode
*dec
, void *src
, void *end
, void *dest
,
97 size_t size
, size_t n
) {
99 src
= decode(dec
, src
, end
, dest
);
100 dest
= (char *)dest
+ size
;
105 /* Decoding specs for simple data types */
106 sfnt_decode uint16_decode
[] = { { d_uint16
, 0 }, { d_end
} };
107 sfnt_decode int16_decode
[] = { { d_int16
, 0 }, { d_end
} };
108 sfnt_decode uint32_decode
[] = { { d_uint32
, 0 }, { d_end
} };
110 /* Offset subdirectory -- the start of the file */
111 typedef struct offsubdir_Tag offsubdir
;
112 struct offsubdir_Tag
{
113 unsigned scaler_type
;
116 sfnt_decode offsubdir_decode
[] = {
117 { d_uint32
, offsetof(offsubdir
, scaler_type
) },
118 { d_uint16
, offsetof(offsubdir
, numTables
) },
123 #define sfnt_00010000 0x00010000
124 #define TAG_cmap 0x636d6170
125 #define TAG_glyf 0x676c7966
126 #define TAG_head 0x68656164
127 #define TAG_hhea 0x68686561
128 #define TAG_hmtx 0x686d7478
129 #define TAG_loca 0x6c6f6361
130 #define TAG_name 0x6e616d65
131 #define TAG_post 0x706f7374
132 #define sfnt_true 0x74727565
134 /* Table directory */
135 typedef struct tabledir_Tag tabledir
;
136 struct tabledir_Tag
{
142 sfnt_decode tabledir_decode
[] = {
143 { d_uint32
, offsetof(tabledir
, tag
) },
144 { d_uint32
, offsetof(tabledir
, checkSum
) },
145 { d_uint32
, offsetof(tabledir
, offset
) },
146 { d_uint32
, offsetof(tabledir
, length
) },
150 /* Character to Glyph ('cmap') table */
151 typedef struct t_cmap_Tag t_cmap
;
155 sfnt_decode t_cmap_decode
[] = {
157 { d_uint16
, offsetof(t_cmap
, numTables
) },
160 typedef struct encodingrec_Tag encodingrec
;
161 struct encodingrec_Tag
{
166 sfnt_decode encodingrec_decode
[] = {
167 { d_uint16
, offsetof(encodingrec
, platformID
) },
168 { d_uint16
, offsetof(encodingrec
, encodingID
) },
169 { d_uint32
, offsetof(encodingrec
, offset
) },
172 typedef struct cmap4_Tag cmap4
;
177 sfnt_decode cmap4_decode
[] = {
178 { d_skip(2) }, /* format */
179 { d_uint16
, offsetof(cmap4
, length
) },
180 { d_skip(2) }, /* language */
181 { d_uint16
, offsetof(cmap4
, segCountX2
) },
182 { d_skip(6) }, /* searchRange, entrySelector, rangeShift */
186 /* Font Header ('head') table */
187 typedef struct t_head_Tag t_head
;
190 unsigned fontRevision
;
193 int xMin
, yMin
, xMax
, yMax
;
194 int indexToLocFormat
;
196 sfnt_decode t_head_decode
[] = {
197 { d_uint32
, offsetof(t_head
, version
) },
198 { d_uint32
, offsetof(t_head
, fontRevision
) },
199 { d_skip(8) }, /* checkSumAdjustment, magicNumber, flags */
200 { d_uint16
, offsetof(t_head
, flags
) },
201 { d_uint16
, offsetof(t_head
, unitsPerEm
) },
202 { d_skip(16) }, /* created, modified */
203 { d_int16
, offsetof(t_head
, xMin
) },
204 { d_int16
, offsetof(t_head
, yMin
) },
205 { d_int16
, offsetof(t_head
, xMax
) },
206 { d_int16
, offsetof(t_head
, yMax
) },
207 { d_skip(6) }, /* macStyle, lowestRecPPEM, fontDirectionHint */
208 { d_int16
, offsetof(t_head
, indexToLocFormat
) },
213 /* Horizontal Header ('hhea') table */
214 typedef struct t_hhea_Tag t_hhea
;
220 int metricDataFormat
;
221 unsigned numOfLongHorMetrics
;
223 sfnt_decode t_hhea_decode
[] = {
224 { d_uint32
, offsetof(t_hhea
, version
) },
225 { d_int16
, offsetof(t_hhea
, ascent
) },
226 { d_int16
, offsetof(t_hhea
, descent
) },
227 { d_int16
, offsetof(t_hhea
, lineGap
) },
229 { d_int16
, offsetof(t_hhea
, metricDataFormat
) },
230 { d_uint16
, offsetof(t_hhea
, numOfLongHorMetrics
) },
234 /* Horizontal Metrics ('hmtx') table */
235 sfnt_decode longhormetric_decode
[] = {
241 /* Naming ('name') table */
242 typedef struct t_name_Tag t_name
;
243 typedef struct namerecord_Tag namerecord
;
247 unsigned stringOffset
;
248 namerecord
*nameRecord
;
250 sfnt_decode t_name_decode
[] = {
251 { d_uint16
, offsetof(t_name
, format
) },
252 { d_uint16
, offsetof(t_name
, count
) },
253 { d_uint16
, offsetof(t_name
, stringOffset
) },
256 struct namerecord_Tag
{
264 sfnt_decode namerecord_decode
[] = {
265 { d_uint16
, offsetof(namerecord
, platformID
) },
266 { d_uint16
, offsetof(namerecord
, encodingID
) },
267 { d_uint16
, offsetof(namerecord
, languageID
) },
268 { d_uint16
, offsetof(namerecord
, nameID
) },
269 { d_uint16
, offsetof(namerecord
, length
) },
270 { d_uint16
, offsetof(namerecord
, offset
) },
274 /* PostScript compatibility ('post') table */
275 typedef struct t_post_Tag t_post
;
279 int underlinePosition
;
280 int underlineThickness
;
281 unsigned isFixedPitch
;
282 unsigned minMemType42
;
283 unsigned maxMemType42
;
285 sfnt_decode t_post_decode
[] = {
286 { d_uint32
, offsetof(t_post
, format
) },
287 { d_int32
, offsetof(t_post
, italicAngle
) },
288 { d_int16
, offsetof(t_post
, underlinePosition
) },
289 { d_int16
, offsetof(t_post
, underlineThickness
) },
290 { d_uint32
, offsetof(t_post
, isFixedPitch
) },
291 { d_uint32
, offsetof(t_post
, minMemType42
) },
292 { d_uint32
, offsetof(t_post
, maxMemType42
) },
293 { d_skip(8) }, /* minMemType1, maxMemType1 */
299 unsigned short index
;
302 typedef struct sfnt_Tag sfnt
;
311 glyph
*glyphsbyindex
;
312 unsigned short *glyphsbyname
;
313 unsigned minmem
, maxmem
;
316 static int sfnt_findtable(sfnt
*sf
, unsigned tag
,
317 void **startp
, void **endp
) {
320 for (i
= 0; i
< sf
->osd
.numTables
; i
++) {
321 if (sf
->td
[i
].tag
== tag
) {
322 *startp
= (char *)sf
->data
+ sf
->td
[i
].offset
;
323 *endp
= (char *)*startp
+ sf
->td
[i
].length
;
330 static char *sfnt_psname(font_info
*fi
) {
331 sfnt
*sf
= fi
->fontfile
;
338 if (!sfnt_findtable(sf
, TAG_name
, &ptr
, &end
))
340 ptr
= decode(t_name_decode
, ptr
, end
, &name
);
341 name
.nameRecord
= snewn(name
.count
, namerecord
);
342 ptr
= decoden(namerecord_decode
, ptr
, sf
->end
, name
.nameRecord
,
343 sizeof(*name
.nameRecord
), name
.count
);
344 for (i
= 0; i
< name
.count
; i
++) {
345 nr
= name
.nameRecord
+ i
;
346 if (nr
->nameID
== 6) {
347 /* PostScript name, but can we make sense of it? */
348 if (nr
->platformID
== 1 && nr
->encodingID
== 0) {
349 /* Mac Roman, which is ASCII for our purposes */
350 psname
= snewn(nr
->length
+ 1, char);
351 memcpy(psname
, (char *)ptr
+ nr
->offset
, nr
->length
);
352 psname
[nr
->length
] = 0;
353 sfree(name
.nameRecord
);
361 static unsigned short *cmp_glyphsbyindex
;
362 static int glyphsbyname_cmp(void const *a
, void const *b
) {
363 glyph ga
= cmp_glyphsbyindex
[*(unsigned short *)a
];
364 glyph gb
= cmp_glyphsbyindex
[*(unsigned short *)b
];
365 if (ga
< gb
) return -1;
366 if (ga
> gb
) return 1;
369 static int glyphsbyname_cmp_search(void const *a
, void const *b
) {
370 glyph ga
= *(glyph
*)a
;
371 glyph gb
= cmp_glyphsbyindex
[*(unsigned short *)b
];
372 if (ga
< gb
) return -1;
373 if (ga
> gb
) return 1;
378 * Extract data from the 'post' table (mostly glyph mappings)
380 * TODO: cope better with duplicated glyph names (usually .notdef)
381 * TODO: when presented with format 3.0, try to use 'CFF' if present.
383 static void sfnt_mapglyphs(font_info
*fi
) {
384 sfnt
*sf
= fi
->fontfile
;
390 unsigned nextras
, i
, g
;
392 sf
->glyphsbyname
= sf
->glyphsbyindex
= NULL
;
393 if (!sfnt_findtable(sf
, TAG_post
, &ptr
, &end
))
395 ptr
= decode(t_post_decode
, ptr
, end
, &post
);
397 sf
->minmem
= post
.minMemType42
;
398 sf
->maxmem
= post
.maxMemType42
;
399 fi
->italicangle
= post
.italicAngle
/ 65536.0;
400 if (ptr
== NULL
) abort();
401 switch (post
.format
) {
404 sf
->glyphsbyindex
= (glyph
*)tt_std_glyphs
;
407 if ((char *)ptr
+ 2 > (char *)end
) return;
408 decode_uint16(ptr
, &sf
->nglyphs
);
409 ptr
= (char *)ptr
+ 2;
410 if ((char *)ptr
+ 2*sf
->nglyphs
> (char *)end
) return;
412 for (sptr
= (unsigned char *)ptr
+ 2*sf
->nglyphs
;
413 sptr
< (unsigned char *)end
;
416 extraglyphs
= snewn(nextras
, glyph
);
418 for (sptr
= (unsigned char *)ptr
+ 2*sf
->nglyphs
;
419 sptr
< (unsigned char *)end
;
421 memcpy(tmp
, sptr
+ 1, *sptr
);
424 extraglyphs
[i
++] = glyph_intern(tmp
);
426 sf
->glyphsbyindex
= snewn(sf
->nglyphs
, glyph
);
427 for (i
= 0; i
< sf
->nglyphs
; i
++) {
428 decode_uint16((char *)ptr
+ 2*i
, &g
);
430 sf
->glyphsbyindex
[i
] = tt_std_glyphs
[g
];
431 else if (g
< 258 + nextras
)
432 sf
->glyphsbyindex
[i
] = extraglyphs
[g
- 258];
434 sf
->glyphsbyindex
[i
] = NOGLYPH
;
441 /* Construct glyphsbyname */
442 sf
->glyphsbyname
= snewn(sf
->nglyphs
, unsigned short);
443 for (i
= 0; i
< sf
->nglyphs
; i
++)
444 sf
->glyphsbyname
[i
] = i
;
445 cmp_glyphsbyindex
= sf
->glyphsbyindex
;
446 qsort(sf
->glyphsbyname
, sf
->nglyphs
, sizeof(*sf
->glyphsbyname
),
450 static glyph
sfnt_indextoglyph(sfnt
*sf
, unsigned short idx
) {
451 return sf
->glyphsbyindex
[idx
];
454 static unsigned short sfnt_glyphtoindex(sfnt
*sf
, glyph g
) {
455 cmp_glyphsbyindex
= sf
->glyphsbyindex
;
456 return *(unsigned short *)bsearch(&g
, sf
->glyphsbyname
, sf
->nglyphs
,
457 sizeof(*sf
->glyphsbyname
),
458 glyphsbyname_cmp_search
);
462 * Get data from 'hhea' and 'hmtx' tables
464 void sfnt_getmetrics(font_info
*fi
) {
465 sfnt
*sf
= fi
->fontfile
;
471 if (!sfnt_findtable(sf
, TAG_hhea
, &ptr
, &end
))
473 if (decode(t_hhea_decode
, ptr
, end
, &hhea
) == NULL
)
475 if ((hhea
.version
& 0xffff0000) != 0x00010000)
477 fi
->ascent
= hhea
.ascent
;
478 fi
->descent
= hhea
.descent
;
479 if (hhea
.metricDataFormat
!= 0)
481 if (!sfnt_findtable(sf
, TAG_hmtx
, &ptr
, &end
))
483 hmtx
= snewn(hhea
.numOfLongHorMetrics
, unsigned);
484 if (decoden(longhormetric_decode
, ptr
, end
, hmtx
, sizeof(*hmtx
),
485 hhea
.numOfLongHorMetrics
) == NULL
)
487 for (i
= 0; i
< sf
->nglyphs
; i
++) {
488 glyph_width
*w
= snew(glyph_width
);
489 w
->glyph
= sfnt_indextoglyph(sf
, i
);
490 j
= i
< hhea
.numOfLongHorMetrics ? i
: hhea
.numOfLongHorMetrics
- 1;
491 w
->width
= hmtx
[j
] * UNITS_PER_PT
/ sf
->head
.unitsPerEm
;
492 add234(fi
->widths
, w
);
497 * Get mapping data from 'cmap' table
499 * We look for either a (0, 3), or (3, 1) table, both of these being
500 * versions of UCS-2. We only handle format 4 of this table, since
501 * that seems to be the only one in use.
503 void sfnt_getmap(font_info
*fi
) {
504 sfnt
*sf
= fi
->fontfile
;
507 void *base
, *ptr
, *end
;
512 for (i
= 0; i
< lenof(fi
->bmp
); i
++)
514 if (!sfnt_findtable(sf
, TAG_cmap
, &ptr
, &end
))
517 ptr
= decode(t_cmap_decode
, ptr
, end
, &cmap
);
518 if (ptr
== NULL
) abort();
519 esd
= snewn(cmap
.numTables
, encodingrec
);
520 ptr
= decoden(encodingrec_decode
, ptr
, end
, esd
, sizeof(*esd
),
522 if (ptr
== NULL
) abort();
523 for (i
= 0; i
< cmap
.numTables
; i
++) {
524 if (!decode(uint16_decode
, (char *)base
+ esd
[i
].offset
, end
, &format
))
526 if ((esd
[i
].platformID
== 0 && esd
[i
].encodingID
== 3) ||
527 (esd
[i
].platformID
== 3 && esd
[i
].encodingID
== 1)) {
529 if (!decode(uint16_decode
, (char *)base
+ esd
[i
].offset
, end
,
533 unsigned *data
, *endCode
, *startCode
, *idDelta
, *idRangeOffset
;
534 unsigned *glyphIndexArray
;
535 unsigned segcount
, nword
, nglyphindex
, j
;
538 ptr
= decode(cmap4_decode
, (char *)base
+ esd
[i
].offset
, end
,
541 segcount
= cmap4
.segCountX2
/ 2;
542 nword
= cmap4
.length
/ 2 - 7;
543 data
= snewn(nword
, unsigned);
544 if (!decoden(uint16_decode
, ptr
, (char *)ptr
+ nword
* 2,
545 data
, sizeof(*data
), nword
)) abort();
547 startCode
= data
+ segcount
+ 1;
548 idDelta
= startCode
+ segcount
;
549 idRangeOffset
= idDelta
+ segcount
;
550 glyphIndexArray
= idRangeOffset
+ segcount
;
551 nglyphindex
= nword
- segcount
* 4 - 1;
553 for (j
= 0; j
< segcount
; j
++) {
556 if (idRangeOffset
[j
] == 0) {
557 for (k
= startCode
[j
]; k
<= endCode
[j
]; k
++) {
558 idx
= (k
+ idDelta
[j
]) & 0xffff;
560 if (idx
> sf
->nglyphs
) abort();
561 fi
->bmp
[k
] = sfnt_indextoglyph(sf
, idx
);
565 unsigned startidx
= idRangeOffset
[j
]/2 - segcount
+ j
;
566 for (k
= startCode
[j
]; k
<= endCode
[j
]; k
++) {
567 idx
= glyphIndexArray
[startidx
+ k
- startCode
[j
]];
569 idx
= (idx
+ idDelta
[j
]) & 0xffff;
570 if (idx
> sf
->nglyphs
) abort();
571 fi
->bmp
[k
] = sfnt_indextoglyph(sf
, idx
);
583 void read_sfnt_file(input
*in
) {
584 sfnt
*sf
= snew(sfnt
);
586 FILE *fp
= in
->currfp
;
587 font_info
*fi
= snew(font_info
);
592 fi
->widths
= newtree234(width_cmp
);
593 fi
->kerns
= newtree234(kern_cmp
);
594 fi
->ligs
= newtree234(lig_cmp
);
595 fi
->fontbbox
[0] = fi
->fontbbox
[1] = fi
->fontbbox
[2] = fi
->fontbbox
[3] = 0;
596 fi
->capheight
= fi
->xheight
= fi
->ascent
= fi
->descent
= 0;
597 fi
->stemh
= fi
->stemv
= fi
->italicangle
= 0;
599 fi
->filetype
= TRUETYPE
;
602 sf
->data
= snewn(sf
->len
, unsigned char);
604 got
= fread((char *)sf
->data
+ off
, 1, sf
->len
- off
, fp
);
606 if (off
!= sf
->len
) break;
608 sf
->data
= sresize(sf
->data
, sf
->len
, unsigned char);
611 sf
->data
= sresize(sf
->data
, sf
->len
, unsigned char);
612 sf
->end
= (char *)sf
->data
+ sf
->len
;
613 decode(offsubdir_decode
, sf
->data
, sf
->end
, &sf
->osd
);
615 fprintf(stderr, "scaler type = 0x%x; numTables = %u\n",
616 sf->osd.scaler_type, sf->osd.numTables);
618 sf
->td
= snewn(sf
->osd
.numTables
, tabledir
);
619 decoden(tabledir_decode
, (char *)sf
->data
+ 12, sf
->end
,
620 sf
->td
, sizeof(*sf
->td
), sf
->osd
.numTables
);
622 for (i = 0; i < sf->osd.numTables; i++)
623 fprintf(stderr, "table tag = '%c%c%c%c'; offset = %#10x; length = %#10x\n",
624 sf->td[i].tag >> 24, sf->td[i].tag >> 16, sf->td[i].tag >> 8, sf->td[i].tag, sf->td[i].offset, sf->td[i].length);
626 if (!sfnt_findtable(sf
, TAG_head
, &ptr
, &end
))
628 if (decode(t_head_decode
, ptr
, end
, &sf
->head
) == NULL
)
630 if ((sf
->head
.version
& 0xffff0000) != 0x00010000)
632 fi
->name
= sfnt_psname(fi
);
636 fi
->next
= all_fonts
;
641 static int sizecmp(const void *a
, const void *b
) {
642 if (*(size_t *)a
< *(size_t *)b
) return -1;
643 if (*(size_t *)a
> *(size_t *)b
) return 1;
648 * The format for embedding TrueType fonts in Postscript is defined in
649 * Adobe Technical Note #5012: The Type 42 Font Format Specification.
650 * <http://partners.adobe.com/public/developer/en/font/5012.Type42_Spec.pdf>
653 void sfnt_writeps(font_info
const *fi
, FILE *ofp
) {
654 unsigned i
, j
, lastbreak
;
655 sfnt
*sf
= fi
->fontfile
;
656 size_t *breaks
, glyfoff
, glyflen
;
657 void *glyfptr
, *glyfend
, *locaptr
, *locaend
;
660 /* XXX Unclear that this is the correct format. */
661 fprintf(ofp
, "%%!PS-TrueTypeFont-%u-%u\n", sf
->osd
.scaler_type
,
662 sf
->head
.fontRevision
);
664 fprintf(ofp
, "%%%%VMUsage: %u %u\n", sf
->minmem
, sf
->maxmem
);
665 fprintf(ofp
, "9 dict dup begin\n");
666 fprintf(ofp
, "/FontType 42 def\n");
667 fprintf(ofp
, "/FontMatrix [1 0 0 1 0 0] def\n");
668 fprintf(ofp
, "/FontName /%s def\n", fi
->name
);
669 fprintf(ofp
, "/Encoding StandardEncoding def\n");
670 if ((sf
->head
.flags
& 0x0003) == 0x0003) {
672 * Sensible font with the origin in the right place, such that
673 * the bounding box is meaningful.
675 fprintf(ofp
, "/FontBBox [%g %g %g %g] readonly def\n",
676 (double)sf
->head
.xMin
/ sf
->head
.unitsPerEm
,
677 (double)sf
->head
.yMin
/ sf
->head
.unitsPerEm
,
678 (double)sf
->head
.xMax
/ sf
->head
.unitsPerEm
,
679 (double)sf
->head
.yMax
/ sf
->head
.unitsPerEm
);
681 /* Non-sensible font. */
682 fprintf(ofp
, "/FontBBox [0 0 0 0] readonly def");
684 fprintf(ofp
, "/PaintType 0 def\n");
685 fprintf(ofp
, "/CharStrings %u dict dup begin\n", sf
->nglyphs
);
686 fprintf(ofp
, "0 1 %u{currentfile token pop exch def}bind for\n",
688 for (i
= 0; i
< sf
->nglyphs
; i
++)
689 fprintf(ofp
, "/%s\n", glyph_extern(sfnt_indextoglyph(sf
, i
)));
690 fprintf(ofp
, "end readonly def\n");
691 fprintf(ofp
, "/sfnts [<");
692 breaks
= snewn(sf
->osd
.numTables
+ sf
->nglyphs
, size_t);
693 for (i
= 0; i
< sf
->osd
.numTables
; i
++) {
694 breaks
[i
] = sf
->td
[i
].offset
;
696 if (!sfnt_findtable(sf
, TAG_glyf
, &glyfptr
, &glyfend
))
698 glyfoff
= (char *)glyfptr
- (char *)sf
->data
;
699 glyflen
= (char *)glyfend
- (char *)glyfptr
;
700 if (!sfnt_findtable(sf
, TAG_loca
, &locaptr
, &locaend
))
702 loca
= snewn(sf
->nglyphs
, unsigned);
703 if (sf
->head
.indexToLocFormat
== 0) {
704 if (!decoden(uint16_decode
, locaptr
, locaend
, loca
, sizeof(*loca
),
705 sf
->nglyphs
)) abort();
706 for (i
= 0; i
< sf
->nglyphs
; i
++) loca
[i
] *= 2;
708 if (!decoden(uint32_decode
, locaptr
, locaend
, loca
, sizeof(*loca
),
709 sf
->nglyphs
)) abort();
711 for (i
= 1; i
< sf
->nglyphs
; i
++) {
712 if (loca
[i
] > glyflen
) abort();
713 breaks
[sf
->osd
.numTables
+ i
- 1] = loca
[i
] + glyfoff
;
715 breaks
[sf
->osd
.numTables
+ sf
->nglyphs
- 1] = sf
->len
;
716 qsort(breaks
, sf
->osd
.numTables
+ sf
->nglyphs
, sizeof(*breaks
), sizecmp
);
718 for (i
= 0; i
< sf
->len
; i
++) {
719 if ((i
- lastbreak
) % 38 == 0) fprintf(ofp
, "\n");
720 if (i
== breaks
[j
]) {
721 while (i
== breaks
[j
]) j
++;
723 fprintf(ofp
, "00><\n");
725 fprintf(ofp
, "%02x", *((unsigned char *)sf
->data
+ i
));
727 fprintf(ofp
, "00>] readonly def\n");
729 fprintf(ofp
, "end /%s exch definefont\n", fi
->name
);