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Add separate parsing tables for CFF2 

Limit Top, Font and Private dicts to operators allowed by spec
Remove duplicate constants (CFFCODE vs CFF_CODE)
Allow more than 256 Font Dicts (subfonts) in CFF2
This commit is contained in:
Dave Arnold 2016-09-29 16:54:53 -07:00
parent dccfebc0f5
commit 4c39089a4d
6 changed files with 66 additions and 17 deletions
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2
src/cff/cf2font.c
View File

@ -417,7 +417,7 @@
font->lenNormalizedVector != lenNormalizedV ||
( lenNormalizedV &&
memcmp( normalizedV,
&font->lastNormalizedVector,
font->lastNormalizedVector,
lenNormalizedV * sizeof( *normalizedV ) ) != 0 ) )
{
font->lastVsindex = subFont->font_dict.vsindex;

16
src/cff/cffload.c
View File

@ -1469,7 +1469,8 @@
FT_UInt font_index,
FT_Stream stream,
FT_ULong base_offset,
FT_Library library )
FT_Library library,
FT_UInt code )
{
FT_Error error;
CFF_ParserRec parser;
@ -1480,7 +1481,7 @@
cff_parser_init( &parser,
CFF_CODE_TOPDICT,
code,
&font->font_dict,
library,
0,
@ -1552,7 +1553,7 @@
priv->blue_scale = (FT_Fixed)( 0.039625 * 0x10000L * 1000 );
cff_parser_init( &parser,
CFF_CODE_PRIVATE,
code == CFF2_CODE_FONTDICT ? CFF2_CODE_PRIVATE : CFF_CODE_PRIVATE,
priv,
library,
top->num_designs,
@ -1746,7 +1747,8 @@
subfont_index,
stream,
base_offset,
library );
library,
cff2 ? CFF2_CODE_TOPDICT : CFF_CODE_TOPDICT );
if ( error )
goto Exit;
@ -1775,7 +1777,8 @@
if ( error )
goto Exit;
if ( fd_index.count > CFF_MAX_CID_FONTS )
/* Font Dicts are not limited to 256 for CFF2 */
if ( !cff2 && fd_index.count > CFF_MAX_CID_FONTS )
{
FT_TRACE0(( "cff_font_load: FD array too large in CID font\n" ));
goto Fail_CID;
@ -1796,7 +1799,8 @@
sub = font->subfonts[idx];
FT_TRACE4(( "parsing subfont %u\n", idx ));
error = cff_subfont_load( sub, &fd_index, idx,
stream, base_offset, library );
stream, base_offset, library,
cff2 ? CFF2_CODE_FONTDICT : CFF_CODE_TOPDICT );
if ( error )
goto Fail_CID;
}

3
src/cff/cffparse.c
View File

@ -820,9 +820,6 @@
#define CFF_FIELD_BOOL( code, name, id ) \
CFF_FIELD( code, name, id, cff_kind_bool )
#define CFFCODE_TOPDICT 0x1000
#define CFFCODE_PRIVATE 0x2000
#ifndef FT_CONFIG_OPTION_PIC

7
src/cff/cffparse.h
View File

@ -30,8 +30,11 @@ FT_BEGIN_HEADER
#define CFF_MAX_STACK_DEPTH 193
#define CFF_CODE_TOPDICT 0x1000
#define CFF_CODE_PRIVATE 0x2000
#define CFF_CODE_TOPDICT 0x1000
#define CFF_CODE_PRIVATE 0x2000
#define CFF2_CODE_TOPDICT 0x3000
#define CFF2_CODE_FONTDICT 0x4000
#define CFF2_CODE_PRIVATE 0x5000
typedef struct CFF_ParserRec_

52
src/cff/cfftoken.h
View File

@ -20,7 +20,7 @@
#define FT_STRUCTURE CFF_FontRecDictRec
#undef CFFCODE
#define CFFCODE CFFCODE_TOPDICT
#define CFFCODE CFF_CODE_TOPDICT
CFF_FIELD_STRING ( 0, version, "Version" )
CFF_FIELD_STRING ( 1, notice, "Notice" )
@ -45,9 +45,6 @@
CFF_FIELD_NUM ( 16, encoding_offset, "Encoding" )
CFF_FIELD_NUM ( 17, charstrings_offset, "CharStrings" )
CFF_FIELD_CALLBACK( 18, private_dict, "Private" )
CFF_FIELD_NUM ( 22, vsindex, "vsindex" )
CFF_FIELD_NUM ( 24, vstore_offset, "vstore" )
CFF_FIELD_NUM ( 25, maxstack, "maxstack" )
CFF_FIELD_NUM ( 0x114, synthetic_base, "SyntheticBase" )
CFF_FIELD_STRING ( 0x115, embedded_postscript, "PostScript" )
@ -81,7 +78,7 @@
#undef FT_STRUCTURE
#define FT_STRUCTURE CFF_PrivateRec
#undef CFFCODE
#define CFFCODE CFFCODE_PRIVATE
#define CFFCODE CFF_CODE_PRIVATE
CFF_FIELD_DELTA ( 6, blue_values, 14, "BlueValues" )
CFF_FIELD_DELTA ( 7, other_blues, 10, "OtherBlues" )
@ -104,6 +101,51 @@
CFF_FIELD_NUM ( 20, default_width, "defaultWidthX" )
CFF_FIELD_NUM ( 21, nominal_width, "nominalWidthX" )
#undef FT_STRUCTURE
#define FT_STRUCTURE CFF_FontRecDictRec
#undef CFFCODE
#define CFFCODE CFF2_CODE_TOPDICT
CFF_FIELD_CALLBACK( 0x107, font_matrix, "FontMatrix" )
CFF_FIELD_NUM ( 17, charstrings_offset, "CharStrings" )
CFF_FIELD_NUM ( 0x124, cid_fd_array_offset, "FDArray" )
CFF_FIELD_NUM ( 0x125, cid_fd_select_offset, "FDSelect" )
CFF_FIELD_NUM ( 24, vstore_offset, "vstore" )
CFF_FIELD_NUM ( 25, maxstack, "maxstack" )
#undef FT_STRUCTURE
#define FT_STRUCTURE CFF_FontRecDictRec
#undef CFFCODE
#define CFFCODE CFF2_CODE_FONTDICT
CFF_FIELD_CALLBACK( 18, private_dict, "Private" )
CFF_FIELD_CALLBACK( 0x107, font_matrix, "FontMatrix" )
CFF_FIELD_STRING ( 0x126, cid_font_name, "FontName" )
#undef FT_STRUCTURE
#define FT_STRUCTURE CFF_PrivateRec
#undef CFFCODE
#define CFFCODE CFF2_CODE_PRIVATE
CFF_FIELD_DELTA ( 6, blue_values, 14, "BlueValues" )
CFF_FIELD_DELTA ( 7, other_blues, 10, "OtherBlues" )
CFF_FIELD_DELTA ( 8, family_blues, 14, "FamilyBlues" )
CFF_FIELD_DELTA ( 9, family_other_blues, 10, "FamilyOtherBlues" )
CFF_FIELD_FIXED_1000( 0x109, blue_scale, "BlueScale" )
CFF_FIELD_NUM ( 0x10A, blue_shift, "BlueShift" )
CFF_FIELD_NUM ( 0x10B, blue_fuzz, "BlueFuzz" )
CFF_FIELD_NUM ( 10, standard_width, "StdHW" )
CFF_FIELD_NUM ( 11, standard_height, "StdVW" )
CFF_FIELD_DELTA ( 0x10C, snap_widths, 13, "StemSnapH" )
CFF_FIELD_DELTA ( 0x10D, snap_heights, 13, "StemSnapV" )
CFF_FIELD_NUM ( 0x111, language_group, "LanguageGroup" )
CFF_FIELD_FIXED ( 0x112, expansion_factor, "ExpansionFactor" )
CFF_FIELD_NUM ( 22, vsindex, "vsindex" )
CFF_FIELD_BLEND ( 31, "blend" )
CFF_FIELD_NUM ( 19, local_subrs_offset, "Subrs" )
/* END */

3
src/cff/cfftypes.h
View File

@ -223,6 +223,9 @@ FT_BEGIN_HEADER
FT_Pos default_width;
FT_Pos nominal_width;
/* fields for CFF2 */
FT_UInt vsindex;
} CFF_PrivateRec, *CFF_Private;