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Diffstat (limited to 'src/freetype2/sfnt/ttcmap.c')
-rw-r--r--src/freetype2/sfnt/ttcmap.c1437
1 files changed, 1294 insertions, 143 deletions
diff --git a/src/freetype2/sfnt/ttcmap.c b/src/freetype2/sfnt/ttcmap.c
index 854d567..26ea83c 100644
--- a/src/freetype2/sfnt/ttcmap.c
+++ b/src/freetype2/sfnt/ttcmap.c
@@ -4,7 +4,7 @@
/* */
/* TrueType character mapping table (cmap) support (body). */
/* */
-/* Copyright 2002, 2003, 2004, 2005, 2006, 2007 by */
+/* Copyright 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 by */
/* David Turner, Robert Wilhelm, and Werner Lemberg. */
/* */
/* This file is part of the FreeType project, and may only be used, */
@@ -25,6 +25,7 @@
#include FT_INTERNAL_STREAM_H
#include "ttload.h"
#include "ttcmap.h"
+#include "sfntpic.h"
/*************************************************************************/
@@ -39,11 +40,13 @@
#define TT_PEEK_SHORT FT_PEEK_SHORT
#define TT_PEEK_USHORT FT_PEEK_USHORT
+#define TT_PEEK_UINT24 FT_PEEK_UOFF3
#define TT_PEEK_LONG FT_PEEK_LONG
#define TT_PEEK_ULONG FT_PEEK_ULONG
#define TT_NEXT_SHORT FT_NEXT_SHORT
#define TT_NEXT_USHORT FT_NEXT_USHORT
+#define TT_NEXT_UINT24 FT_NEXT_UOFF3
#define TT_NEXT_LONG FT_NEXT_LONG
#define TT_NEXT_ULONG FT_NEXT_ULONG
@@ -122,7 +125,7 @@
}
- FT_CALLBACK_DEF( FT_UInt )
+ FT_CALLBACK_DEF( FT_UInt32 )
tt_cmap0_char_next( TT_CMap cmap,
FT_UInt32 *pchar_code )
{
@@ -132,7 +135,7 @@
FT_UInt gindex = 0;
- table += 6; /* go to glyph ids */
+ table += 6; /* go to glyph IDs */
while ( ++charcode < 256 )
{
gindex = table[charcode];
@@ -155,28 +158,27 @@
FT_Byte* p = cmap->data + 4;
- cmap_info->format = 0;
+ cmap_info->format = 0;
cmap_info->language = (FT_ULong)TT_PEEK_USHORT( p );
return SFNT_Err_Ok;
}
- FT_CALLBACK_TABLE_DEF
- const TT_CMap_ClassRec tt_cmap0_class_rec =
- {
- {
+ FT_DEFINE_TT_CMAP(tt_cmap0_class_rec,
sizeof ( TT_CMapRec ),
(FT_CMap_InitFunc) tt_cmap_init,
(FT_CMap_DoneFunc) NULL,
(FT_CMap_CharIndexFunc)tt_cmap0_char_index,
- (FT_CMap_CharNextFunc) tt_cmap0_char_next
- },
+ (FT_CMap_CharNextFunc) tt_cmap0_char_next,
+
+ NULL, NULL, NULL, NULL, NULL
+ ,
0,
(TT_CMap_ValidateFunc) tt_cmap0_validate,
(TT_CMap_Info_GetFunc) tt_cmap0_get_info
- };
+ )
#endif /* TT_CONFIG_CMAP_FORMAT_0 */
@@ -227,7 +229,7 @@
/* language 4 USHORT Mac language code */
/* keys 6 USHORT[256] sub-header keys */
/* subs 518 SUBHEAD[NSUBS] sub-headers array */
- /* glyph_ids 518+NSUB*8 USHORT[] glyph id array */
+ /* glyph_ids 518+NSUB*8 USHORT[] glyph ID array */
/* */
/* The `keys' table is used to map charcode high-bytes to sub-headers. */
/* The value of `NSUBS' is the number of sub-headers defined in the */
@@ -256,14 +258,14 @@
/* */
/* * The value of `offset' is read. This is a _byte_ distance from the */
/* location of the `offset' field itself into a slice of the */
- /* `glyph_ids' table. Let's call it `slice' (it's a USHORT[] too). */
+ /* `glyph_ids' table. Let's call it `slice' (it is a USHORT[] too). */
/* */
/* * The value `slice[char.lo - first]' is read. If it is 0, there is */
/* no glyph for the charcode. Otherwise, the value of `delta' is */
/* added to it (modulo 65536) to form a new glyph index. */
/* */
/* It is up to the validation routine to check that all offsets fall */
- /* within the glyph ids table (and not within the `subs' table itself or */
+ /* within the glyph IDs table (and not within the `subs' table itself or */
/* outside of the CMap). */
/* */
@@ -278,7 +280,7 @@
FT_UInt n, max_subs;
FT_Byte* keys; /* keys table */
FT_Byte* subs; /* sub-headers */
- FT_Byte* glyph_ids; /* glyph id array */
+ FT_Byte* glyph_ids; /* glyph ID array */
if ( table + length > valid->limit || length < 6 + 512 )
@@ -324,6 +326,10 @@
delta = TT_NEXT_SHORT( p );
offset = TT_NEXT_USHORT( p );
+ /* many Dynalab fonts have empty sub-headers */
+ if ( code_count == 0 )
+ continue;
+
/* check range within 0..255 */
if ( valid->level >= FT_VALIDATE_PARANOID )
{
@@ -338,7 +344,7 @@
if ( ids < glyph_ids || ids + code_count*2 > table + length )
FT_INVALID_OFFSET;
- /* check glyph ids */
+ /* check glyph IDs */
if ( valid->level >= FT_VALIDATE_TIGHT )
{
FT_Byte* limit = p + code_count * 2;
@@ -389,7 +395,7 @@
sub = subs; /* jump to first sub-header */
/* check that the sub-header for this byte is 0, which */
- /* indicates that it's really a valid one-byte value */
+ /* indicates that it is really a valid one-byte value */
/* Otherwise, return 0 */
/* */
p += char_lo * 2;
@@ -454,7 +460,7 @@
}
- FT_CALLBACK_DEF( FT_UInt )
+ FT_CALLBACK_DEF( FT_UInt32 )
tt_cmap2_char_next( TT_CMap cmap,
FT_UInt32 *pcharcode )
{
@@ -528,28 +534,27 @@
FT_Byte* p = cmap->data + 4;
- cmap_info->format = 2;
+ cmap_info->format = 2;
cmap_info->language = (FT_ULong)TT_PEEK_USHORT( p );
return SFNT_Err_Ok;
}
- FT_CALLBACK_TABLE_DEF
- const TT_CMap_ClassRec tt_cmap2_class_rec =
- {
- {
+ FT_DEFINE_TT_CMAP(tt_cmap2_class_rec,
sizeof ( TT_CMapRec ),
(FT_CMap_InitFunc) tt_cmap_init,
(FT_CMap_DoneFunc) NULL,
(FT_CMap_CharIndexFunc)tt_cmap2_char_index,
- (FT_CMap_CharNextFunc) tt_cmap2_char_next
- },
+ (FT_CMap_CharNextFunc) tt_cmap2_char_next,
+
+ NULL, NULL, NULL, NULL, NULL
+ ,
2,
(TT_CMap_ValidateFunc) tt_cmap2_validate,
(TT_CMap_Info_GetFunc) tt_cmap2_get_info
- };
+ )
#endif /* TT_CONFIG_CMAP_FORMAT_2 */
@@ -595,14 +600,14 @@
/* each segment; can be */
/* zero */
/* */
- /* glyphIds 16+NUM_SEGS*8 USHORT[] array of glyph id */
+ /* glyphIds 16+NUM_SEGS*8 USHORT[] array of glyph ID */
/* ranges */
/* */
/* Character codes are modelled by a series of ordered (increasing) */
/* intervals called segments. Each segment has start and end codes, */
/* provided by the `startCount' and `endCount' arrays. Segments must */
- /* not be overlapping and the last segment should always contain the */
- /* `0xFFFF' endCount. */
+ /* not overlap, and the last segment should always contain the value */
+ /* 0xFFFF for `endCount'. */
/* */
/* The fields `searchRange', `entrySelector' and `rangeShift' are better */
/* ignored (they are traces of over-engineering in the TrueType */
@@ -615,14 +620,14 @@
/* charcode within the segment is obtained by adding the value of */
/* `idDelta' directly to the charcode, modulo 65536. */
/* */
- /* Otherwise, a glyph index is taken from the glyph ids sub-array for */
+ /* Otherwise, a glyph index is taken from the glyph IDs sub-array for */
/* the segment, and the value of `idDelta' is added to it. */
/* */
/* */
- /* Finally, note that certain fonts contain invalid charmaps that */
- /* contain end=0xFFFF, start=0xFFFF, delta=0x0001, offset=0xFFFF at the */
- /* of their charmaps (e.g. opens___.ttf which comes with OpenOffice.org) */
- /* we need special code to deal with them correctly... */
+ /* Finally, note that a lot of fonts contain an invalid last segment, */
+ /* where `start' and `end' are correctly set to 0xFFFF but both `delta' */
+ /* and `offset' are incorrect (e.g., `opens___.ttf' which comes with */
+ /* OpenOffice.org). We need special code to deal with them correctly. */
/* */
#ifdef TT_CONFIG_CMAP_FORMAT_4
@@ -654,7 +659,7 @@
p = table + 6;
cmap->num_ranges = FT_PEEK_USHORT( p ) >> 1;
- cmap->cur_charcode = 0xFFFFFFFFUL;
+ cmap->cur_charcode = (FT_UInt32)0xFFFFFFFFUL;
cmap->cur_gindex = 0;
return SFNT_Err_Ok;
@@ -687,6 +692,23 @@
p += num_ranges * 2;
offset = FT_PEEK_USHORT( p );
+ /* some fonts have an incorrect last segment; */
+ /* we have to catch it */
+ if ( range_index >= num_ranges - 1 &&
+ cmap->cur_start == 0xFFFFU &&
+ cmap->cur_end == 0xFFFFU )
+ {
+ TT_Face face = (TT_Face)cmap->cmap.cmap.charmap.face;
+ FT_Byte* limit = face->cmap_table + face->cmap_size;
+
+
+ if ( offset && p + offset + 2 > limit )
+ {
+ cmap->cur_delta = 1;
+ offset = 0;
+ }
+ }
+
if ( offset != 0xFFFFU )
{
cmap->cur_values = offset ? p + offset : NULL;
@@ -715,7 +737,7 @@
if ( cmap->cur_charcode >= 0xFFFFUL )
goto Fail;
- charcode = cmap->cur_charcode + 1;
+ charcode = (FT_UInt)cmap->cur_charcode + 1;
if ( charcode < cmap->cur_start )
charcode = cmap->cur_start;
@@ -777,7 +799,7 @@
}
Fail:
- cmap->cur_charcode = 0xFFFFFFFFUL;
+ cmap->cur_charcode = (FT_UInt32)0xFFFFFFFFUL;
cmap->cur_gindex = 0;
}
@@ -825,7 +847,7 @@
/* */
if ( valid->level >= FT_VALIDATE_PARANOID )
{
- /* check the values of 'searchRange', 'entrySelector', 'rangeShift' */
+ /* check the values of `searchRange', `entrySelector', `rangeShift' */
FT_UInt search_range = TT_NEXT_USHORT( p );
FT_UInt entry_selector = TT_NEXT_USHORT( p );
FT_UInt range_shift = TT_NEXT_USHORT( p );
@@ -852,7 +874,7 @@
offsets = deltas + num_segs * 2;
glyph_ids = offsets + num_segs * 2;
- /* check last segment, its end count must be FFFF */
+ /* check last segment; its end count value must be 0xFFFF */
if ( valid->level >= FT_VALIDATE_PARANOID )
{
p = ends + ( num_segs - 1 ) * 2;
@@ -861,9 +883,9 @@
}
{
- FT_UInt start, end, offset, n;
- FT_UInt last_start = 0, last_end = 0;
- FT_Int delta;
+ FT_UInt start, end, offset, n;
+ FT_UInt last_start = 0, last_end = 0;
+ FT_Int delta;
FT_Byte* p_start = starts;
FT_Byte* p_end = ends;
FT_Byte* p_delta = deltas;
@@ -881,10 +903,10 @@
if ( start > end )
FT_INVALID_DATA;
- /* this test should be performed at default validation level; */
- /* unfortunately, some popular Asian fonts present overlapping */
- /* ranges in their charmaps */
- /* */
+ /* this test should be performed at default validation level; */
+ /* unfortunately, some popular Asian fonts have overlapping */
+ /* ranges in their charmaps */
+ /* */
if ( start <= last_end && n > 0 )
{
if ( valid->level >= FT_VALIDATE_TIGHT )
@@ -892,7 +914,7 @@
else
{
/* allow overlapping segments, provided their start points */
- /* and end points, respectively, are in ascending order. */
+ /* and end points, respectively, are in ascending order */
/* */
if ( last_start > start || last_end > end )
error |= TT_CMAP_FLAG_UNSORTED;
@@ -903,16 +925,27 @@
if ( offset && offset != 0xFFFFU )
{
- p += offset; /* start of glyph id array */
+ p += offset; /* start of glyph ID array */
- /* check that we point within the glyph ids table only */
+ /* check that we point within the glyph IDs table only */
if ( valid->level >= FT_VALIDATE_TIGHT )
{
if ( p < glyph_ids ||
p + ( end - start + 1 ) * 2 > table + length )
FT_INVALID_DATA;
}
- else
+ /* Some fonts handle the last segment incorrectly. In */
+ /* theory, 0xFFFF might point to an ordinary glyph -- */
+ /* a cmap 4 is versatile and could be used for any */
+ /* encoding, not only Unicode. However, reality shows */
+ /* that far too many fonts are sloppy and incorrectly */
+ /* set all fields but `start' and `end' for the last */
+ /* segment if it contains only a single character. */
+ /* */
+ /* We thus omit the test here, delaying it to the */
+ /* routines which actually access the cmap. */
+ else if ( n != num_segs - 1 ||
+ !( start == 0xFFFFU && end == 0xFFFFU ) )
{
if ( p < glyph_ids ||
p + ( end - start + 1 ) * 2 > valid->limit )
@@ -940,12 +973,12 @@
}
else if ( offset == 0xFFFFU )
{
- /* Some fonts (erroneously?) use a range offset of 0xFFFF */
+ /* some fonts (erroneously?) use a range offset of 0xFFFF */
/* to mean missing glyph in cmap table */
/* */
- if ( valid->level >= FT_VALIDATE_PARANOID ||
- n != num_segs - 1 ||
- !( start == 0xFFFFU && end == 0xFFFFU && delta == 0x1U ) )
+ if ( valid->level >= FT_VALIDATE_PARANOID ||
+ n != num_segs - 1 ||
+ !( start == 0xFFFFU && end == 0xFFFFU ) )
FT_INVALID_DATA;
}
@@ -959,9 +992,9 @@
static FT_UInt
- tt_cmap4_char_map_linear( TT_CMap cmap,
- FT_UInt* pcharcode,
- FT_Bool next )
+ tt_cmap4_char_map_linear( TT_CMap cmap,
+ FT_UInt32* pcharcode,
+ FT_Bool next )
{
FT_UInt num_segs2, start, end, offset;
FT_Int delta;
@@ -1003,6 +1036,22 @@
p += num_segs2;
offset = TT_PEEK_USHORT( p );
+ /* some fonts have an incorrect last segment; */
+ /* we have to catch it */
+ if ( i >= num_segs - 1 &&
+ start == 0xFFFFU && end == 0xFFFFU )
+ {
+ TT_Face face = (TT_Face)cmap->cmap.charmap.face;
+ FT_Byte* limit = face->cmap_table + face->cmap_size;
+
+
+ if ( offset && p + offset + 2 > limit )
+ {
+ delta = 1;
+ offset = 0;
+ }
+ }
+
if ( offset == 0xFFFFU )
continue;
@@ -1032,14 +1081,14 @@
static FT_UInt
- tt_cmap4_char_map_binary( TT_CMap cmap,
- FT_UInt* pcharcode,
- FT_Bool next )
+ tt_cmap4_char_map_binary( TT_CMap cmap,
+ FT_UInt32* pcharcode,
+ FT_Bool next )
{
FT_UInt num_segs2, start, end, offset;
FT_Int delta;
FT_UInt max, min, mid, num_segs;
- FT_UInt charcode = *pcharcode;
+ FT_UInt charcode = (FT_UInt)*pcharcode;
FT_UInt gindex = 0;
FT_Byte* p;
@@ -1082,6 +1131,22 @@
p += num_segs2;
offset = TT_PEEK_USHORT( p );
+ /* some fonts have an incorrect last segment; */
+ /* we have to catch it */
+ if ( mid >= num_segs - 1 &&
+ start == 0xFFFFU && end == 0xFFFFU )
+ {
+ TT_Face face = (TT_Face)cmap->cmap.charmap.face;
+ FT_Byte* limit = face->cmap_table + face->cmap_size;
+
+
+ if ( offset && p + offset + 2 > limit )
+ {
+ delta = 1;
+ offset = 0;
+ }
+ }
+
/* search the first segment containing `charcode' */
if ( cmap->flags & TT_CMAP_FLAG_OVERLAPPING )
{
@@ -1265,7 +1330,7 @@
}
- FT_CALLBACK_DEF( FT_UInt )
+ FT_CALLBACK_DEF( FT_UInt32 )
tt_cmap4_char_next( TT_CMap cmap,
FT_UInt32 *pchar_code )
{
@@ -1305,27 +1370,26 @@
FT_Byte* p = cmap->data + 4;
- cmap_info->format = 4;
+ cmap_info->format = 4;
cmap_info->language = (FT_ULong)TT_PEEK_USHORT( p );
return SFNT_Err_Ok;
}
- FT_CALLBACK_TABLE_DEF
- const TT_CMap_ClassRec tt_cmap4_class_rec =
- {
- {
+ FT_DEFINE_TT_CMAP(tt_cmap4_class_rec,
sizeof ( TT_CMap4Rec ),
(FT_CMap_InitFunc) tt_cmap4_init,
(FT_CMap_DoneFunc) NULL,
(FT_CMap_CharIndexFunc)tt_cmap4_char_index,
- (FT_CMap_CharNextFunc) tt_cmap4_char_next
- },
+ (FT_CMap_CharNextFunc) tt_cmap4_char_next,
+
+ NULL, NULL, NULL, NULL, NULL
+ ,
4,
(TT_CMap_ValidateFunc) tt_cmap4_validate,
(TT_CMap_Info_GetFunc) tt_cmap4_get_info
- };
+ )
#endif /* TT_CONFIG_CMAP_FORMAT_4 */
@@ -1351,7 +1415,7 @@
/* */
/* first 6 USHORT first segment code */
/* count 8 USHORT segment size in chars */
- /* glyphIds 10 USHORT[count] glyph ids */
+ /* glyphIds 10 USHORT[count] glyph IDs */
/* */
/* A very simplified segment mapping. */
/* */
@@ -1417,7 +1481,7 @@
}
- FT_CALLBACK_DEF( FT_UInt )
+ FT_CALLBACK_DEF( FT_UInt32 )
tt_cmap6_char_next( TT_CMap cmap,
FT_UInt32 *pchar_code )
{
@@ -1465,28 +1529,27 @@
FT_Byte* p = cmap->data + 4;
- cmap_info->format = 6;
+ cmap_info->format = 6;
cmap_info->language = (FT_ULong)TT_PEEK_USHORT( p );
return SFNT_Err_Ok;
}
- FT_CALLBACK_TABLE_DEF
- const TT_CMap_ClassRec tt_cmap6_class_rec =
- {
- {
+ FT_DEFINE_TT_CMAP(tt_cmap6_class_rec,
sizeof ( TT_CMapRec ),
(FT_CMap_InitFunc) tt_cmap_init,
(FT_CMap_DoneFunc) NULL,
(FT_CMap_CharIndexFunc)tt_cmap6_char_index,
- (FT_CMap_CharNextFunc) tt_cmap6_char_next
- },
+ (FT_CMap_CharNextFunc) tt_cmap6_char_next,
+
+ NULL, NULL, NULL, NULL, NULL
+ ,
6,
(TT_CMap_ValidateFunc) tt_cmap6_validate,
(TT_CMap_Info_GetFunc) tt_cmap6_get_info
- };
+ )
#endif /* TT_CONFIG_CMAP_FORMAT_6 */
@@ -1496,7 +1559,7 @@
/***** *****/
/***** FORMAT 8 *****/
/***** *****/
- /***** It's hard to completely understand what the OpenType spec *****/
+ /***** It is hard to completely understand what the OpenType spec *****/
/***** says about this format, but here is my conclusion. *****/
/***** *****/
/***** The purpose of this format is to easily map UTF-16 text to *****/
@@ -1511,7 +1574,7 @@
/***** `char_hi' and `char_lo' must be in the Surrogates Area. *****/
/***** Area. *****/
/***** *****/
- /***** The 'is32' table embedded in the charmap indicates whether a *****/
+ /***** The `is32' table embedded in the charmap indicates whether a *****/
/***** given 16-bit value is in the surrogates area or not. *****/
/***** *****/
/***** So, for any given `char_code', we can assert the following: *****/
@@ -1538,11 +1601,11 @@
/* is32 12 BYTE[8192] 32-bitness bitmap */
/* count 8204 ULONG number of groups */
/* */
- /* This header is followed by 'count' groups of the following format: */
+ /* This header is followed by `count' groups of the following format: */
/* */
/* start 0 ULONG first charcode */
/* end 4 ULONG last charcode */
- /* startId 8 ULONG start glyph id for the group */
+ /* startId 8 ULONG start glyph ID for the group */
/* */
#ifdef TT_CONFIG_CMAP_FORMAT_8
@@ -1561,7 +1624,7 @@
FT_INVALID_TOO_SHORT;
length = TT_NEXT_ULONG( p );
- if ( table + length > valid->limit || length < 8208 )
+ if ( length > (FT_UInt32)( valid->limit - table ) || length < 8192 + 16 )
FT_INVALID_TOO_SHORT;
is32 = table + 12;
@@ -1671,7 +1734,7 @@
}
- FT_CALLBACK_DEF( FT_UInt )
+ FT_CALLBACK_DEF( FT_UInt32 )
tt_cmap8_char_next( TT_CMap cmap,
FT_UInt32 *pchar_code )
{
@@ -1719,28 +1782,27 @@
FT_Byte* p = cmap->data + 8;
- cmap_info->format = 8;
+ cmap_info->format = 8;
cmap_info->language = (FT_ULong)TT_PEEK_ULONG( p );
return SFNT_Err_Ok;
}
- FT_CALLBACK_TABLE_DEF
- const TT_CMap_ClassRec tt_cmap8_class_rec =
- {
- {
+ FT_DEFINE_TT_CMAP(tt_cmap8_class_rec,
sizeof ( TT_CMapRec ),
(FT_CMap_InitFunc) tt_cmap_init,
(FT_CMap_DoneFunc) NULL,
(FT_CMap_CharIndexFunc)tt_cmap8_char_index,
- (FT_CMap_CharNextFunc) tt_cmap8_char_next
- },
+ (FT_CMap_CharNextFunc) tt_cmap8_char_next,
+
+ NULL, NULL, NULL, NULL, NULL
+ ,
8,
(TT_CMap_ValidateFunc) tt_cmap8_validate,
(TT_CMap_Info_GetFunc) tt_cmap8_get_info
- };
+ )
#endif /* TT_CONFIG_CMAP_FORMAT_8 */
@@ -1787,7 +1849,8 @@
p = table + 16;
count = TT_NEXT_ULONG( p );
- if ( table + length > valid->limit || length < 20 + count * 2 )
+ if ( length > (FT_ULong)( valid->limit - table ) ||
+ length < 20 + count * 2 )
FT_INVALID_TOO_SHORT;
/* check glyph indices */
@@ -1829,7 +1892,7 @@
}
- FT_CALLBACK_DEF( FT_UInt )
+ FT_CALLBACK_DEF( FT_UInt32 )
tt_cmap10_char_next( TT_CMap cmap,
FT_UInt32 *pchar_code )
{
@@ -1868,28 +1931,27 @@
FT_Byte* p = cmap->data + 8;
- cmap_info->format = 10;
+ cmap_info->format = 10;
cmap_info->language = (FT_ULong)TT_PEEK_ULONG( p );
return SFNT_Err_Ok;
}
- FT_CALLBACK_TABLE_DEF
- const TT_CMap_ClassRec tt_cmap10_class_rec =
- {
- {
+ FT_DEFINE_TT_CMAP(tt_cmap10_class_rec,
sizeof ( TT_CMapRec ),
(FT_CMap_InitFunc) tt_cmap_init,
(FT_CMap_DoneFunc) NULL,
(FT_CMap_CharIndexFunc)tt_cmap10_char_index,
- (FT_CMap_CharNextFunc) tt_cmap10_char_next
- },
+ (FT_CMap_CharNextFunc) tt_cmap10_char_next,
+
+ NULL, NULL, NULL, NULL, NULL
+ ,
10,
(TT_CMap_ValidateFunc) tt_cmap10_validate,
(TT_CMap_Info_GetFunc) tt_cmap10_get_info
- };
+ )
#endif /* TT_CONFIG_CMAP_FORMAT_10 */
@@ -1920,7 +1982,7 @@
/* */
/* start 0 ULONG first charcode */
/* end 4 ULONG last charcode */
- /* startId 8 ULONG start glyph id for the group */
+ /* startId 8 ULONG start glyph ID for the group */
/* */
#ifdef TT_CONFIG_CMAP_FORMAT_12
@@ -1970,7 +2032,8 @@
p = table + 12;
num_groups = TT_NEXT_ULONG( p );
- if ( table + length > valid->limit || length < 16 + 12 * num_groups )
+ if ( length > (FT_ULong)( valid->limit - table ) ||
+ length < 16 + 12 * num_groups )
FT_INVALID_TOO_SHORT;
/* check groups, they must be in increasing order */
@@ -2147,7 +2210,7 @@
}
- FT_CALLBACK_DEF( FT_UInt )
+ FT_CALLBACK_DEF( FT_UInt32 )
tt_cmap12_char_next( TT_CMap cmap,
FT_UInt32 *pchar_code )
{
@@ -2165,8 +2228,10 @@
if ( cmap12->valid )
{
gindex = cmap12->cur_gindex;
+
+ /* XXX: check cur_charcode overflow is expected */
if ( gindex )
- *pchar_code = cmap12->cur_charcode;
+ *pchar_code = (FT_UInt32)cmap12->cur_charcode;
}
else
gindex = 0;
@@ -2174,7 +2239,8 @@
else
gindex = tt_cmap12_char_map_binary( cmap, pchar_code, 1 );
- return gindex;
+ /* XXX: check gindex overflow is expected */
+ return (FT_UInt32)gindex;
}
@@ -2185,66 +2251,1138 @@
FT_Byte* p = cmap->data + 8;
- cmap_info->format = 12;
+ cmap_info->format = 12;
cmap_info->language = (FT_ULong)TT_PEEK_ULONG( p );
return SFNT_Err_Ok;
}
- FT_CALLBACK_TABLE_DEF
- const TT_CMap_ClassRec tt_cmap12_class_rec =
- {
- {
+ FT_DEFINE_TT_CMAP(tt_cmap12_class_rec,
sizeof ( TT_CMap12Rec ),
(FT_CMap_InitFunc) tt_cmap12_init,
(FT_CMap_DoneFunc) NULL,
(FT_CMap_CharIndexFunc)tt_cmap12_char_index,
- (FT_CMap_CharNextFunc) tt_cmap12_char_next
- },
+ (FT_CMap_CharNextFunc) tt_cmap12_char_next,
+
+ NULL, NULL, NULL, NULL, NULL
+ ,
12,
(TT_CMap_ValidateFunc) tt_cmap12_validate,
(TT_CMap_Info_GetFunc) tt_cmap12_get_info
+ )
+
+#endif /* TT_CONFIG_CMAP_FORMAT_12 */
+
+
+ /*************************************************************************/
+ /*************************************************************************/
+ /***** *****/
+ /***** FORMAT 13 *****/
+ /***** *****/
+ /*************************************************************************/
+ /*************************************************************************/
+
+ /*************************************************************************/
+ /* */
+ /* TABLE OVERVIEW */
+ /* -------------- */
+ /* */
+ /* NAME OFFSET TYPE DESCRIPTION */
+ /* */
+ /* format 0 USHORT must be 13 */
+ /* reserved 2 USHORT reserved */
+ /* length 4 ULONG length in bytes */
+ /* language 8 ULONG Mac language code */
+ /* count 12 ULONG number of groups */
+ /* 16 */
+ /* */
+ /* This header is followed by `count' groups of the following format: */
+ /* */
+ /* start 0 ULONG first charcode */
+ /* end 4 ULONG last charcode */
+ /* glyphId 8 ULONG glyph ID for the whole group */
+ /* */
+
+#ifdef TT_CONFIG_CMAP_FORMAT_13
+
+ typedef struct TT_CMap13Rec_
+ {
+ TT_CMapRec cmap;
+ FT_Bool valid;
+ FT_ULong cur_charcode;
+ FT_UInt cur_gindex;
+ FT_ULong cur_group;
+ FT_ULong num_groups;
+
+ } TT_CMap13Rec, *TT_CMap13;
+
+
+ FT_CALLBACK_DEF( FT_Error )
+ tt_cmap13_init( TT_CMap13 cmap,
+ FT_Byte* table )
+ {
+ cmap->cmap.data = table;
+
+ table += 12;
+ cmap->num_groups = FT_PEEK_ULONG( table );
+
+ cmap->valid = 0;
+
+ return SFNT_Err_Ok;
+ }
+
+
+ FT_CALLBACK_DEF( FT_Error )
+ tt_cmap13_validate( FT_Byte* table,
+ FT_Validator valid )
+ {
+ FT_Byte* p;
+ FT_ULong length;
+ FT_ULong num_groups;
+
+
+ if ( table + 16 > valid->limit )
+ FT_INVALID_TOO_SHORT;
+
+ p = table + 4;
+ length = TT_NEXT_ULONG( p );
+
+ p = table + 12;
+ num_groups = TT_NEXT_ULONG( p );
+
+ if ( length > (FT_ULong)( valid->limit - table ) ||
+ length < 16 + 12 * num_groups )
+ FT_INVALID_TOO_SHORT;
+
+ /* check groups, they must be in increasing order */
+ {
+ FT_ULong n, start, end, glyph_id, last = 0;
+
+
+ for ( n = 0; n < num_groups; n++ )
+ {
+ start = TT_NEXT_ULONG( p );
+ end = TT_NEXT_ULONG( p );
+ glyph_id = TT_NEXT_ULONG( p );
+
+ if ( start > end )
+ FT_INVALID_DATA;
+
+ if ( n > 0 && start <= last )
+ FT_INVALID_DATA;
+
+ if ( valid->level >= FT_VALIDATE_TIGHT )
+ {
+ if ( glyph_id >= TT_VALID_GLYPH_COUNT( valid ) )
+ FT_INVALID_GLYPH_ID;
+ }
+
+ last = end;
+ }
+ }
+
+ return SFNT_Err_Ok;
+ }
+
+
+ /* search the index of the charcode next to cmap->cur_charcode */
+ /* cmap->cur_group should be set up properly by caller */
+ /* */
+ static void
+ tt_cmap13_next( TT_CMap13 cmap )
+ {
+ FT_Byte* p;
+ FT_ULong start, end, glyph_id, char_code;
+ FT_ULong n;
+ FT_UInt gindex;
+
+
+ if ( cmap->cur_charcode >= 0xFFFFFFFFUL )
+ goto Fail;
+
+ char_code = cmap->cur_charcode + 1;
+
+ n = cmap->cur_group;
+
+ for ( n = cmap->cur_group; n < cmap->num_groups; n++ )
+ {
+ p = cmap->cmap.data + 16 + 12 * n;
+ start = TT_NEXT_ULONG( p );
+ end = TT_NEXT_ULONG( p );
+ glyph_id = TT_PEEK_ULONG( p );
+
+ if ( char_code < start )
+ char_code = start;
+
+ if ( char_code <= end )
+ {
+ gindex = (FT_UInt)glyph_id;
+
+ if ( gindex )
+ {
+ cmap->cur_charcode = char_code;;
+ cmap->cur_gindex = gindex;
+ cmap->cur_group = n;
+
+ return;
+ }
+ }
+ }
+
+ Fail:
+ cmap->valid = 0;
+ }
+
+
+ static FT_UInt
+ tt_cmap13_char_map_binary( TT_CMap cmap,
+ FT_UInt32* pchar_code,
+ FT_Bool next )
+ {
+ FT_UInt gindex = 0;
+ FT_Byte* p = cmap->data + 12;
+ FT_UInt32 num_groups = TT_PEEK_ULONG( p );
+ FT_UInt32 char_code = *pchar_code;
+ FT_UInt32 start, end;
+ FT_UInt32 max, min, mid;
+
+
+ if ( !num_groups )
+ return 0;
+
+ /* make compiler happy */
+ mid = num_groups;
+ end = 0xFFFFFFFFUL;
+
+ if ( next )
+ char_code++;
+
+ min = 0;
+ max = num_groups;
+
+ /* binary search */
+ while ( min < max )
+ {
+ mid = ( min + max ) >> 1;
+ p = cmap->data + 16 + 12 * mid;
+
+ start = TT_NEXT_ULONG( p );
+ end = TT_NEXT_ULONG( p );
+
+ if ( char_code < start )
+ max = mid;
+ else if ( char_code > end )
+ min = mid + 1;
+ else
+ {
+ gindex = (FT_UInt)TT_PEEK_ULONG( p );
+
+ break;
+ }
+ }
+
+ if ( next )
+ {
+ TT_CMap13 cmap13 = (TT_CMap13)cmap;
+
+
+ /* if `char_code' is not in any group, then `mid' is */
+ /* the group nearest to `char_code' */
+ /* */
+
+ if ( char_code > end )
+ {
+ mid++;
+ if ( mid == num_groups )
+ return 0;
+ }
+
+ cmap13->valid = 1;
+ cmap13->cur_charcode = char_code;
+ cmap13->cur_group = mid;
+
+ if ( !gindex )
+ {
+ tt_cmap13_next( cmap13 );
+
+ if ( cmap13->valid )
+ gindex = cmap13->cur_gindex;
+ }
+ else
+ cmap13->cur_gindex = gindex;
+
+ if ( gindex )
+ *pchar_code = cmap13->cur_charcode;
+ }
+
+ return gindex;
+ }
+
+
+ FT_CALLBACK_DEF( FT_UInt )
+ tt_cmap13_char_index( TT_CMap cmap,
+ FT_UInt32 char_code )
+ {
+ return tt_cmap13_char_map_binary( cmap, &char_code, 0 );
+ }
+
+
+ FT_CALLBACK_DEF( FT_UInt32 )
+ tt_cmap13_char_next( TT_CMap cmap,
+ FT_UInt32 *pchar_code )
+ {
+ TT_CMap13 cmap13 = (TT_CMap13)cmap;
+ FT_UInt gindex;
+
+
+ if ( cmap13->cur_charcode >= 0xFFFFFFFFUL )
+ return 0;
+
+ /* no need to search */
+ if ( cmap13->valid && cmap13->cur_charcode == *pchar_code )
+ {
+ tt_cmap13_next( cmap13 );
+ if ( cmap13->valid )
+ {
+ gindex = cmap13->cur_gindex;
+ if ( gindex )
+ *pchar_code = cmap13->cur_charcode;
+ }
+ else
+ gindex = 0;
+ }
+ else
+ gindex = tt_cmap13_char_map_binary( cmap, pchar_code, 1 );
+
+ return gindex;
+ }
+
+
+ FT_CALLBACK_DEF( FT_Error )
+ tt_cmap13_get_info( TT_CMap cmap,
+ TT_CMapInfo *cmap_info )
+ {
+ FT_Byte* p = cmap->data + 8;
+
+
+ cmap_info->format = 13;
+ cmap_info->language = (FT_ULong)TT_PEEK_ULONG( p );
+
+ return SFNT_Err_Ok;
+ }
+
+
+ FT_CALLBACK_TABLE_DEF
+ const TT_CMap_ClassRec tt_cmap13_class_rec =
+ {
+ {
+ sizeof ( TT_CMap13Rec ),
+
+ (FT_CMap_InitFunc) tt_cmap13_init,
+ (FT_CMap_DoneFunc) NULL,
+ (FT_CMap_CharIndexFunc)tt_cmap13_char_index,
+ (FT_CMap_CharNextFunc) tt_cmap13_char_next,
+
+ NULL, NULL, NULL, NULL, NULL
+ },
+ 13,
+ (TT_CMap_ValidateFunc) tt_cmap13_validate,
+ (TT_CMap_Info_GetFunc) tt_cmap13_get_info
};
+#endif /* TT_CONFIG_CMAP_FORMAT_13 */
-#endif /* TT_CONFIG_CMAP_FORMAT_12 */
+ /*************************************************************************/
+ /*************************************************************************/
+ /***** *****/
+ /***** FORMAT 14 *****/
+ /***** *****/
+ /*************************************************************************/
+ /*************************************************************************/
- static const TT_CMap_Class tt_cmap_classes[] =
+ /*************************************************************************/
+ /* */
+ /* TABLE OVERVIEW */
+ /* -------------- */
+ /* */
+ /* NAME OFFSET TYPE DESCRIPTION */
+ /* */
+ /* format 0 USHORT must be 14 */
+ /* length 2 ULONG table length in bytes */
+ /* numSelector 6 ULONG number of variation sel. records */
+ /* */
+ /* Followed by numSelector records, each of which looks like */
+ /* */
+ /* varSelector 0 UINT24 Unicode codepoint of sel. */
+ /* defaultOff 3 ULONG offset to a default UVS table */
+ /* describing any variants to be found in */
+ /* the normal Unicode subtable. */
+ /* nonDefOff 7 ULONG offset to a non-default UVS table */
+ /* describing any variants not in the */
+ /* standard cmap, with GIDs here */
+ /* (either offset may be 0 NULL) */
+ /* */
+ /* Selectors are sorted by code point. */
+ /* */
+ /* A default Unicode Variation Selector (UVS) subtable is just a list of */
+ /* ranges of code points which are to be found in the standard cmap. No */
+ /* glyph IDs (GIDs) here. */
+ /* */
+ /* numRanges 0 ULONG number of ranges following */
+ /* */
+ /* A range looks like */
+ /* */
+ /* uniStart 0 UINT24 code point of the first character in */
+ /* this range */
+ /* additionalCnt 3 UBYTE count of additional characters in this */
+ /* range (zero means a range of a single */
+ /* character) */
+ /* */
+ /* Ranges are sorted by `uniStart'. */
+ /* */
+ /* A non-default Unicode Variation Selector (UVS) subtable is a list of */
+ /* mappings from codepoint to GID. */
+ /* */
+ /* numMappings 0 ULONG number of mappings */
+ /* */
+ /* A range looks like */
+ /* */
+ /* uniStart 0 UINT24 code point of the first character in */
+ /* this range */
+ /* GID 3 USHORT and its GID */
+ /* */
+ /* Ranges are sorted by `uniStart'. */
+
+#ifdef TT_CONFIG_CMAP_FORMAT_14
+
+ typedef struct TT_CMap14Rec_
{
-#ifdef TT_CONFIG_CMAP_FORMAT_0
- &tt_cmap0_class_rec,
-#endif
+ TT_CMapRec cmap;
+ FT_ULong num_selectors;
-#ifdef TT_CONFIG_CMAP_FORMAT_2
- &tt_cmap2_class_rec,
-#endif
+ /* This array is used to store the results of various
+ * cmap 14 query functions. The data is overwritten
+ * on each call to these functions.
+ */
+ FT_UInt32 max_results;
+ FT_UInt32* results;
+ FT_Memory memory;
-#ifdef TT_CONFIG_CMAP_FORMAT_4
- &tt_cmap4_class_rec,
-#endif
+ } TT_CMap14Rec, *TT_CMap14;
-#ifdef TT_CONFIG_CMAP_FORMAT_6
- &tt_cmap6_class_rec,
-#endif
-#ifdef TT_CONFIG_CMAP_FORMAT_8
- &tt_cmap8_class_rec,
-#endif
+ FT_CALLBACK_DEF( void )
+ tt_cmap14_done( TT_CMap14 cmap )
+ {
+ FT_Memory memory = cmap->memory;
-#ifdef TT_CONFIG_CMAP_FORMAT_10
- &tt_cmap10_class_rec,
-#endif
-#ifdef TT_CONFIG_CMAP_FORMAT_12
- &tt_cmap12_class_rec,
-#endif
+ cmap->max_results = 0;
+ if ( memory != NULL && cmap->results != NULL )
+ FT_FREE( cmap->results );
+ }
+
+
+ static FT_Error
+ tt_cmap14_ensure( TT_CMap14 cmap,
+ FT_UInt32 num_results,
+ FT_Memory memory )
+ {
+ FT_UInt32 old_max = cmap->max_results;
+ FT_Error error = 0;
+
+
+ if ( num_results > cmap->max_results )
+ {
+ cmap->memory = memory;
+
+ if ( FT_QRENEW_ARRAY( cmap->results, old_max, num_results ) )
+ return error;
+
+ cmap->max_results = num_results;
+ }
+
+ return error;
+ }
+
+
+ FT_CALLBACK_DEF( FT_Error )
+ tt_cmap14_init( TT_CMap14 cmap,
+ FT_Byte* table )
+ {
+ cmap->cmap.data = table;
+
+ table += 6;
+ cmap->num_selectors = FT_PEEK_ULONG( table );
+ cmap->max_results = 0;
+ cmap->results = NULL;
+
+ return SFNT_Err_Ok;
+ }
+
+
+ FT_CALLBACK_DEF( FT_Error )
+ tt_cmap14_validate( FT_Byte* table,
+ FT_Validator valid )
+ {
+ FT_Byte* p = table + 2;
+ FT_ULong length = TT_NEXT_ULONG( p );
+ FT_ULong num_selectors = TT_NEXT_ULONG( p );
+
+
+ if ( length > (FT_ULong)( valid->limit - table ) ||
+ length < 10 + 11 * num_selectors )
+ FT_INVALID_TOO_SHORT;
+
+ /* check selectors, they must be in increasing order */
+ {
+ /* we start lastVarSel at 1 because a variant selector value of 0
+ * isn't valid.
+ */
+ FT_ULong n, lastVarSel = 1;
+
+
+ for ( n = 0; n < num_selectors; n++ )
+ {
+ FT_ULong varSel = TT_NEXT_UINT24( p );
+ FT_ULong defOff = TT_NEXT_ULONG( p );
+ FT_ULong nondefOff = TT_NEXT_ULONG( p );
+
+
+ if ( defOff >= length || nondefOff >= length )
+ FT_INVALID_TOO_SHORT;
+
+ if ( varSel < lastVarSel )
+ FT_INVALID_DATA;
+
+ lastVarSel = varSel + 1;
+
+ /* check the default table (these glyphs should be reached */
+ /* through the normal Unicode cmap, no GIDs, just check order) */
+ if ( defOff != 0 )
+ {
+ FT_Byte* defp = table + defOff;
+ FT_ULong numRanges = TT_NEXT_ULONG( defp );
+ FT_ULong i;
+ FT_ULong lastBase = 0;
+
+
+ if ( defp + numRanges * 4 > valid->limit )
+ FT_INVALID_TOO_SHORT;
+
+ for ( i = 0; i < numRanges; ++i )
+ {
+ FT_ULong base = TT_NEXT_UINT24( defp );
+ FT_ULong cnt = FT_NEXT_BYTE( defp );
+
+
+ if ( base + cnt >= 0x110000UL ) /* end of Unicode */
+ FT_INVALID_DATA;
+
+ if ( base < lastBase )
+ FT_INVALID_DATA;
+
+ lastBase = base + cnt + 1U;
+ }
+ }
+
+ /* and the non-default table (these glyphs are specified here) */
+ if ( nondefOff != 0 ) {
+ FT_Byte* ndp = table + nondefOff;
+ FT_ULong numMappings = TT_NEXT_ULONG( ndp );
+ FT_ULong i, lastUni = 0;
+
+
+ if ( numMappings * 4 > (FT_ULong)( valid->limit - ndp ) )
+ FT_INVALID_TOO_SHORT;
+
+ for ( i = 0; i < numMappings; ++i )
+ {
+ FT_ULong uni = TT_NEXT_UINT24( ndp );
+ FT_ULong gid = TT_NEXT_USHORT( ndp );
+
+
+ if ( uni >= 0x110000UL ) /* end of Unicode */
+ FT_INVALID_DATA;
+
+ if ( uni < lastUni )
+ FT_INVALID_DATA;
+
+ lastUni = uni + 1U;
+
+ if ( valid->level >= FT_VALIDATE_TIGHT &&
+ gid >= TT_VALID_GLYPH_COUNT( valid ) )
+ FT_INVALID_GLYPH_ID;
+ }
+ }
+ }
+ }
+
+ return SFNT_Err_Ok;
+ }
+
+
+ FT_CALLBACK_DEF( FT_UInt )
+ tt_cmap14_char_index( TT_CMap cmap,
+ FT_UInt32 char_code )
+ {
+ FT_UNUSED( cmap );
+ FT_UNUSED( char_code );
+
+ /* This can't happen */
+ return 0;
+ }
+
+
+ FT_CALLBACK_DEF( FT_UInt32 )
+ tt_cmap14_char_next( TT_CMap cmap,
+ FT_UInt32 *pchar_code )
+ {
+ FT_UNUSED( cmap );
+
+ /* This can't happen */
+ *pchar_code = 0;
+ return 0;
+ }
+
+
+ FT_CALLBACK_DEF( FT_Error )
+ tt_cmap14_get_info( TT_CMap cmap,
+ TT_CMapInfo *cmap_info )
+ {
+ FT_UNUSED( cmap );
+
+ cmap_info->format = 14;
+ /* subtable 14 does not define a language field */
+ cmap_info->language = 0xFFFFFFFFUL;
+
+ return SFNT_Err_Ok;
+ }
+
+
+ static FT_UInt
+ tt_cmap14_char_map_def_binary( FT_Byte *base,
+ FT_UInt32 char_code )
+ {
+ FT_UInt32 numRanges = TT_PEEK_ULONG( base );
+ FT_UInt32 max, min;
+
+
+ min = 0;
+ max = numRanges;
+
+ base += 4;
+
+ /* binary search */
+ while ( min < max )
+ {
+ FT_UInt32 mid = ( min + max ) >> 1;
+ FT_Byte* p = base + 4 * mid;
+ FT_ULong start = TT_NEXT_UINT24( p );
+ FT_UInt cnt = FT_NEXT_BYTE( p );
+
+
+ if ( char_code < start )
+ max = mid;
+ else if ( char_code > start+cnt )
+ min = mid + 1;
+ else
+ return TRUE;
+ }
+
+ return FALSE;
+ }
+
+
+ static FT_UInt
+ tt_cmap14_char_map_nondef_binary( FT_Byte *base,
+ FT_UInt32 char_code )
+ {
+ FT_UInt32 numMappings = TT_PEEK_ULONG( base );
+ FT_UInt32 max, min;
+
+
+ min = 0;
+ max = numMappings;
+
+ base += 4;
+
+ /* binary search */
+ while ( min < max )
+ {
+ FT_UInt32 mid = ( min + max ) >> 1;
+ FT_Byte* p = base + 5 * mid;
+ FT_UInt32 uni = (FT_UInt32)TT_NEXT_UINT24( p );
+
+
+ if ( char_code < uni )
+ max = mid;
+ else if ( char_code > uni )
+ min = mid + 1;
+ else
+ return TT_PEEK_USHORT( p );
+ }
+
+ return 0;
+ }
+
+
+ static FT_Byte*
+ tt_cmap14_find_variant( FT_Byte *base,
+ FT_UInt32 variantCode )
+ {
+ FT_UInt32 numVar = TT_PEEK_ULONG( base );
+ FT_UInt32 max, min;
+
+
+ min = 0;
+ max = numVar;
+
+ base += 4;
+
+ /* binary search */
+ while ( min < max )
+ {
+ FT_UInt32 mid = ( min + max ) >> 1;
+ FT_Byte* p = base + 11 * mid;
+ FT_ULong varSel = TT_NEXT_UINT24( p );
+
+
+ if ( variantCode < varSel )
+ max = mid;
+ else if ( variantCode > varSel )
+ min = mid + 1;
+ else
+ return p;
+ }
+
+ return NULL;
+ }
+
+
+ FT_CALLBACK_DEF( FT_UInt )
+ tt_cmap14_char_var_index( TT_CMap cmap,
+ TT_CMap ucmap,
+ FT_UInt32 charcode,
+ FT_UInt32 variantSelector)
+ {
+ FT_Byte* p = tt_cmap14_find_variant( cmap->data + 6, variantSelector );
+ FT_ULong defOff;
+ FT_ULong nondefOff;
+
+
+ if ( !p )
+ return 0;
+
+ defOff = TT_NEXT_ULONG( p );
+ nondefOff = TT_PEEK_ULONG( p );
+
+ if ( defOff != 0 &&
+ tt_cmap14_char_map_def_binary( cmap->data + defOff, charcode ) )
+ {
+ /* This is the default variant of this charcode. GID not stored */
+ /* here; stored in the normal Unicode charmap instead. */
+ return ucmap->cmap.clazz->char_index( &ucmap->cmap, charcode );
+ }
+
+ if ( nondefOff != 0 )
+ return tt_cmap14_char_map_nondef_binary( cmap->data + nondefOff,
+ charcode );
+
+ return 0;
+ }
+
+
+ FT_CALLBACK_DEF( FT_Int )
+ tt_cmap14_char_var_isdefault( TT_CMap cmap,
+ FT_UInt32 charcode,
+ FT_UInt32 variantSelector )
+ {
+ FT_Byte* p = tt_cmap14_find_variant( cmap->data + 6, variantSelector );
+ FT_ULong defOff;
+ FT_ULong nondefOff;
+
+
+ if ( !p )
+ return -1;
+
+ defOff = TT_NEXT_ULONG( p );
+ nondefOff = TT_NEXT_ULONG( p );
+
+ if ( defOff != 0 &&
+ tt_cmap14_char_map_def_binary( cmap->data + defOff, charcode ) )
+ return 1;
+
+ if ( nondefOff != 0 &&
+ tt_cmap14_char_map_nondef_binary( cmap->data + nondefOff,
+ charcode ) != 0 )
+ return 0;
+
+ return -1;
+ }
+
+
+ FT_CALLBACK_DEF( FT_UInt32* )
+ tt_cmap14_variants( TT_CMap cmap,
+ FT_Memory memory )
+ {
+ TT_CMap14 cmap14 = (TT_CMap14)cmap;
+ FT_UInt32 count = cmap14->num_selectors;
+ FT_Byte* p = cmap->data + 10;
+ FT_UInt32* result;
+ FT_UInt32 i;
+
+
+ if ( tt_cmap14_ensure( cmap14, ( count + 1 ), memory ) )
+ return NULL;
+
+ result = cmap14->results;
+ for ( i = 0; i < count; ++i )
+ {
+ result[i] = (FT_UInt32)TT_NEXT_UINT24( p );
+ p += 8;
+ }
+ result[i] = 0;
+
+ return result;
+ }
+
+
+ FT_CALLBACK_DEF( FT_UInt32 * )
+ tt_cmap14_char_variants( TT_CMap cmap,
+ FT_Memory memory,
+ FT_UInt32 charCode )
+ {
+ TT_CMap14 cmap14 = (TT_CMap14) cmap;
+ FT_UInt32 count = cmap14->num_selectors;
+ FT_Byte* p = cmap->data + 10;
+ FT_UInt32* q;
+
+
+ if ( tt_cmap14_ensure( cmap14, ( count + 1 ), memory ) )
+ return NULL;
+
+ for ( q = cmap14->results; count > 0; --count )
+ {
+ FT_UInt32 varSel = TT_NEXT_UINT24( p );
+ FT_ULong defOff = TT_NEXT_ULONG( p );
+ FT_ULong nondefOff = TT_NEXT_ULONG( p );
+
+
+ if ( ( defOff != 0 &&
+ tt_cmap14_char_map_def_binary( cmap->data + defOff,
+ charCode ) ) ||
+ ( nondefOff != 0 &&
+ tt_cmap14_char_map_nondef_binary( cmap->data + nondefOff,
+ charCode ) != 0 ) )
+ {
+ q[0] = varSel;
+ q++;
+ }
+ }
+ q[0] = 0;
+
+ return cmap14->results;
+ }
+
+
+ static FT_UInt
+ tt_cmap14_def_char_count( FT_Byte *p )
+ {
+ FT_UInt32 numRanges = (FT_UInt32)TT_NEXT_ULONG( p );
+ FT_UInt tot = 0;
+
+
+ p += 3; /* point to the first `cnt' field */
+ for ( ; numRanges > 0; numRanges-- )
+ {
+ tot += 1 + p[0];
+ p += 4;
+ }
+
+ return tot;
+ }
+
+
+ static FT_UInt32*
+ tt_cmap14_get_def_chars( TT_CMap cmap,
+ FT_Byte* p,
+ FT_Memory memory )
+ {
+ TT_CMap14 cmap14 = (TT_CMap14) cmap;
+ FT_UInt32 numRanges;
+ FT_UInt cnt;
+ FT_UInt32* q;
+
+
+ cnt = tt_cmap14_def_char_count( p );
+ numRanges = (FT_UInt32)TT_NEXT_ULONG( p );
+
+ if ( tt_cmap14_ensure( cmap14, ( cnt + 1 ), memory ) )
+ return NULL;
+
+ for ( q = cmap14->results; numRanges > 0; --numRanges )
+ {
+ FT_UInt32 uni = (FT_UInt32)TT_NEXT_UINT24( p );
+
+
+ cnt = FT_NEXT_BYTE( p ) + 1;
+ do
+ {
+ q[0] = uni;
+ uni += 1;
+ q += 1;
+ } while ( --cnt != 0 );
+ }
+ q[0] = 0;
+
+ return cmap14->results;
+ }
+
+ static FT_UInt32*
+ tt_cmap14_get_nondef_chars( TT_CMap cmap,
+ FT_Byte *p,
+ FT_Memory memory )
+ {
+ TT_CMap14 cmap14 = (TT_CMap14) cmap;
+ FT_UInt32 numMappings;
+ FT_UInt i;
+ FT_UInt32 *ret;
+
+
+ numMappings = (FT_UInt32)TT_NEXT_ULONG( p );
+
+ if ( tt_cmap14_ensure( cmap14, ( numMappings + 1 ), memory ) )
+ return NULL;
+
+ ret = cmap14->results;
+ for ( i = 0; i < numMappings; ++i )
+ {
+ ret[i] = (FT_UInt32)TT_NEXT_UINT24( p );
+ p += 2;
+ }
+ ret[i] = 0;
+
+ return ret;
+ }
+
+
+ FT_CALLBACK_DEF( FT_UInt32 * )
+ tt_cmap14_variant_chars( TT_CMap cmap,
+ FT_Memory memory,
+ FT_UInt32 variantSelector )
+ {
+ FT_Byte *p = tt_cmap14_find_variant( cmap->data + 6,
+ variantSelector );
+ FT_UInt32 *ret;
+ FT_Int i;
+ FT_ULong defOff;
+ FT_ULong nondefOff;
+
+
+ if ( !p )
+ return NULL;
+
+ defOff = TT_NEXT_ULONG( p );
+ nondefOff = TT_NEXT_ULONG( p );
+
+ if ( defOff == 0 && nondefOff == 0 )
+ return NULL;
+
+ if ( defOff == 0 )
+ return tt_cmap14_get_nondef_chars( cmap, cmap->data + nondefOff,
+ memory );
+ else if ( nondefOff == 0 )
+ return tt_cmap14_get_def_chars( cmap, cmap->data + defOff,
+ memory );
+ else
+ {
+ /* Both a default and a non-default glyph set? That's probably not */
+ /* good font design, but the spec allows for it... */
+ TT_CMap14 cmap14 = (TT_CMap14) cmap;
+ FT_UInt32 numRanges;
+ FT_UInt32 numMappings;
+ FT_UInt32 duni;
+ FT_UInt32 dcnt;
+ FT_UInt32 nuni;
+ FT_Byte* dp;
+ FT_UInt di, ni, k;
+
+
+ p = cmap->data + nondefOff;
+ dp = cmap->data + defOff;
+
+ numMappings = (FT_UInt32)TT_NEXT_ULONG( p );
+ dcnt = tt_cmap14_def_char_count( dp );
+ numRanges = (FT_UInt32)TT_NEXT_ULONG( dp );
+
+ if ( numMappings == 0 )
+ return tt_cmap14_get_def_chars( cmap, cmap->data + defOff,
+ memory );
+ if ( dcnt == 0 )
+ return tt_cmap14_get_nondef_chars( cmap, cmap->data + nondefOff,
+ memory );
+
+ if ( tt_cmap14_ensure( cmap14, ( dcnt + numMappings + 1 ), memory ) )
+ return NULL;
+
+ ret = cmap14->results;
+ duni = (FT_UInt32)TT_NEXT_UINT24( dp );
+ dcnt = FT_NEXT_BYTE( dp );
+ di = 1;
+ nuni = (FT_UInt32)TT_NEXT_UINT24( p );
+ p += 2;
+ ni = 1;
+ i = 0;
+
+ for ( ;; )
+ {
+ if ( nuni > duni + dcnt )
+ {
+ for ( k = 0; k <= dcnt; ++k )
+ ret[i++] = duni + k;
+
+ ++di;
+
+ if ( di > numRanges )
+ break;
+
+ duni = (FT_UInt32)TT_NEXT_UINT24( dp );
+ dcnt = FT_NEXT_BYTE( dp );
+ }
+ else
+ {
+ if ( nuni < duni )
+ ret[i++] = nuni;
+ /* If it is within the default range then ignore it -- */
+ /* that should not have happened */
+ ++ni;
+ if ( ni > numMappings )
+ break;
+
+ nuni = (FT_UInt32)TT_NEXT_UINT24( p );
+ p += 2;
+ }
+ }
+
+ if ( ni <= numMappings )
+ {
+ /* If we get here then we have run out of all default ranges. */
+ /* We have read one non-default mapping which we haven't stored */
+ /* and there may be others that need to be read. */
+ ret[i++] = nuni;
+ while ( ni < numMappings )
+ {
+ ret[i++] = (FT_UInt32)TT_NEXT_UINT24( p );
+ p += 2;
+ ++ni;
+ }
+ }
+ else if ( di <= numRanges )
+ {
+ /* If we get here then we have run out of all non-default */
+ /* mappings. We have read one default range which we haven't */
+ /* stored and there may be others that need to be read. */
+ for ( k = 0; k <= dcnt; ++k )
+ ret[i++] = duni + k;
+
+ while ( di < numRanges )
+ {
+ duni = (FT_UInt32)TT_NEXT_UINT24( dp );
+ dcnt = FT_NEXT_BYTE( dp );
+
+ for ( k = 0; k <= dcnt; ++k )
+ ret[i++] = duni + k;
+ ++di;
+ }
+ }
+
+ ret[i] = 0;
+
+ return ret;
+ }
+ }
+
+
+ FT_DEFINE_TT_CMAP(tt_cmap14_class_rec,
+ sizeof ( TT_CMap14Rec ),
+
+ (FT_CMap_InitFunc) tt_cmap14_init,
+ (FT_CMap_DoneFunc) tt_cmap14_done,
+ (FT_CMap_CharIndexFunc)tt_cmap14_char_index,
+ (FT_CMap_CharNextFunc) tt_cmap14_char_next,
+
+ /* Format 14 extension functions */
+ (FT_CMap_CharVarIndexFunc) tt_cmap14_char_var_index,
+ (FT_CMap_CharVarIsDefaultFunc)tt_cmap14_char_var_isdefault,
+ (FT_CMap_VariantListFunc) tt_cmap14_variants,
+ (FT_CMap_CharVariantListFunc) tt_cmap14_char_variants,
+ (FT_CMap_VariantCharListFunc) tt_cmap14_variant_chars
+ ,
+ 14,
+ (TT_CMap_ValidateFunc)tt_cmap14_validate,
+ (TT_CMap_Info_GetFunc)tt_cmap14_get_info
+ )
+
+#endif /* TT_CONFIG_CMAP_FORMAT_14 */
+
+
+#ifndef FT_CONFIG_OPTION_PIC
+
+ static const TT_CMap_Class tt_cmap_classes[] =
+ {
+#define TTCMAPCITEM(a) &a,
+#include "ttcmapc.h"
NULL,
};
+#else /*FT_CONFIG_OPTION_PIC*/
+
+ void FT_Destroy_Class_tt_cmap_classes(FT_Library library, TT_CMap_Class* clazz)
+ {
+ FT_Memory memory = library->memory;
+ if ( clazz )
+ FT_FREE( clazz );
+ }
+
+ FT_Error FT_Create_Class_tt_cmap_classes(FT_Library library, TT_CMap_Class** output_class)
+ {
+ TT_CMap_Class* clazz;
+ TT_CMap_ClassRec* recs;
+ FT_Error error;
+ FT_Memory memory = library->memory;
+ int i = 0;
+
+#define TTCMAPCITEM(a) i++;
+#include "ttcmapc.h"
+
+ /* allocate enough space for both the pointers +terminator and the class instances */
+ if ( FT_ALLOC( clazz, sizeof(*clazz)*(i+1)+sizeof(TT_CMap_ClassRec)*i ) )
+ return error;
+
+ /* the location of the class instances follows the array of pointers */
+ recs = (TT_CMap_ClassRec*) (((char*)clazz)+(sizeof(*clazz)*(i+1)));
+ i=0;
+
+#undef TTCMAPCITEM
+#define TTCMAPCITEM(a) \
+ FT_Init_Class_##a(&recs[i]); \
+ clazz[i] = &recs[i]; \
+ i++;
+#include "ttcmapc.h"
+
+ clazz[i] = NULL;
+
+ *output_class = clazz;
+ return FT_Err_Ok;
+ }
+
+#endif /*FT_CONFIG_OPTION_PIC*/
+
/* parse the `cmap' table and build the corresponding TT_CMap objects */
/* in the current face */
@@ -2256,6 +3394,8 @@
FT_Byte* limit = table + face->cmap_size;
FT_UInt volatile num_cmaps;
FT_Byte* volatile p = table;
+ FT_Library library = FT_FACE_LIBRARY(face);
+ FT_UNUSED(library);
if ( p + 4 > limit )
@@ -2265,7 +3405,8 @@
if ( TT_NEXT_USHORT( p ) != 0 )
{
p -= 2;
- FT_ERROR(( "tt_face_build_cmaps: unsupported `cmap' table format = %d\n",
+ FT_ERROR(( "tt_face_build_cmaps:"
+ " unsupported `cmap' table format = %d\n",
TT_PEEK_USHORT( p ) ));
return SFNT_Err_Invalid_Table;
}
@@ -2288,7 +3429,7 @@
{
FT_Byte* volatile cmap = table + offset;
volatile FT_UInt format = TT_PEEK_USHORT( cmap );
- const TT_CMap_Class* volatile pclazz = tt_cmap_classes;
+ const TT_CMap_Class* volatile pclazz = FT_TT_CMAP_CLASSES_GET;
TT_CMap_Class volatile clazz;
@@ -2318,6 +3459,10 @@
FT_CMap ttcmap;
+ /* It might make sense to store the single variation selector */
+ /* cmap somewhere special. But it would have to be in the */
+ /* public FT_FaceRec, and we can't change that. */
+
if ( !FT_CMap_New( (FT_CMap_Class)clazz,
cmap, &charmap, &ttcmap ) )
{
@@ -2328,12 +3473,18 @@
}
else
{
- FT_ERROR(( "tt_face_build_cmaps:" ));
- FT_ERROR(( " broken cmap sub-table ignored!\n" ));
+ FT_TRACE0(( "tt_face_build_cmaps:"
+ " broken cmap sub-table ignored\n" ));
}
break;
}
}
+
+ if ( *pclazz == NULL )
+ {
+ FT_TRACE0(( "tt_face_build_cmaps:"
+ " unsupported cmap sub-table ignored\n" ));
+ }
}
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-01 19:56:07 +0000