/***************************************************************************/ | |
/* */ | |
/* cffload.c */ | |
/* */ | |
/* OpenType and CFF data/program tables loader (body). */ | |
/* */ | |
/* Copyright 1996-2015 by */ | |
/* David Turner, Robert Wilhelm, and Werner Lemberg. */ | |
/* */ | |
/* This file is part of the FreeType project, and may only be used, */ | |
/* modified, and distributed under the terms of the FreeType project */ | |
/* license, LICENSE.TXT. By continuing to use, modify, or distribute */ | |
/* this file you indicate that you have read the license and */ | |
/* understand and accept it fully. */ | |
/* */ | |
/***************************************************************************/ | |
#include <ft2build.h> | |
#include FT_INTERNAL_DEBUG_H | |
#include FT_INTERNAL_OBJECTS_H | |
#include FT_INTERNAL_STREAM_H | |
#include FT_TRUETYPE_TAGS_H | |
#include FT_TYPE1_TABLES_H | |
#include "cffload.h" | |
#include "cffparse.h" | |
#include "cfferrs.h" | |
#if 1 | |
static const FT_UShort cff_isoadobe_charset[229] = | |
{ | |
0, 1, 2, 3, 4, 5, 6, 7, | |
8, 9, 10, 11, 12, 13, 14, 15, | |
16, 17, 18, 19, 20, 21, 22, 23, | |
24, 25, 26, 27, 28, 29, 30, 31, | |
32, 33, 34, 35, 36, 37, 38, 39, | |
40, 41, 42, 43, 44, 45, 46, 47, | |
48, 49, 50, 51, 52, 53, 54, 55, | |
56, 57, 58, 59, 60, 61, 62, 63, | |
64, 65, 66, 67, 68, 69, 70, 71, | |
72, 73, 74, 75, 76, 77, 78, 79, | |
80, 81, 82, 83, 84, 85, 86, 87, | |
88, 89, 90, 91, 92, 93, 94, 95, | |
96, 97, 98, 99, 100, 101, 102, 103, | |
104, 105, 106, 107, 108, 109, 110, 111, | |
112, 113, 114, 115, 116, 117, 118, 119, | |
120, 121, 122, 123, 124, 125, 126, 127, | |
128, 129, 130, 131, 132, 133, 134, 135, | |
136, 137, 138, 139, 140, 141, 142, 143, | |
144, 145, 146, 147, 148, 149, 150, 151, | |
152, 153, 154, 155, 156, 157, 158, 159, | |
160, 161, 162, 163, 164, 165, 166, 167, | |
168, 169, 170, 171, 172, 173, 174, 175, | |
176, 177, 178, 179, 180, 181, 182, 183, | |
184, 185, 186, 187, 188, 189, 190, 191, | |
192, 193, 194, 195, 196, 197, 198, 199, | |
200, 201, 202, 203, 204, 205, 206, 207, | |
208, 209, 210, 211, 212, 213, 214, 215, | |
216, 217, 218, 219, 220, 221, 222, 223, | |
224, 225, 226, 227, 228 | |
}; | |
static const FT_UShort cff_expert_charset[166] = | |
{ | |
0, 1, 229, 230, 231, 232, 233, 234, | |
235, 236, 237, 238, 13, 14, 15, 99, | |
239, 240, 241, 242, 243, 244, 245, 246, | |
247, 248, 27, 28, 249, 250, 251, 252, | |
253, 254, 255, 256, 257, 258, 259, 260, | |
261, 262, 263, 264, 265, 266, 109, 110, | |
267, 268, 269, 270, 271, 272, 273, 274, | |
275, 276, 277, 278, 279, 280, 281, 282, | |
283, 284, 285, 286, 287, 288, 289, 290, | |
291, 292, 293, 294, 295, 296, 297, 298, | |
299, 300, 301, 302, 303, 304, 305, 306, | |
307, 308, 309, 310, 311, 312, 313, 314, | |
315, 316, 317, 318, 158, 155, 163, 319, | |
320, 321, 322, 323, 324, 325, 326, 150, | |
164, 169, 327, 328, 329, 330, 331, 332, | |
333, 334, 335, 336, 337, 338, 339, 340, | |
341, 342, 343, 344, 345, 346, 347, 348, | |
349, 350, 351, 352, 353, 354, 355, 356, | |
357, 358, 359, 360, 361, 362, 363, 364, | |
365, 366, 367, 368, 369, 370, 371, 372, | |
373, 374, 375, 376, 377, 378 | |
}; | |
static const FT_UShort cff_expertsubset_charset[87] = | |
{ | |
0, 1, 231, 232, 235, 236, 237, 238, | |
13, 14, 15, 99, 239, 240, 241, 242, | |
243, 244, 245, 246, 247, 248, 27, 28, | |
249, 250, 251, 253, 254, 255, 256, 257, | |
258, 259, 260, 261, 262, 263, 264, 265, | |
266, 109, 110, 267, 268, 269, 270, 272, | |
300, 301, 302, 305, 314, 315, 158, 155, | |
163, 320, 321, 322, 323, 324, 325, 326, | |
150, 164, 169, 327, 328, 329, 330, 331, | |
332, 333, 334, 335, 336, 337, 338, 339, | |
340, 341, 342, 343, 344, 345, 346 | |
}; | |
static const FT_UShort cff_standard_encoding[256] = | |
{ | |
0, 0, 0, 0, 0, 0, 0, 0, | |
0, 0, 0, 0, 0, 0, 0, 0, | |
0, 0, 0, 0, 0, 0, 0, 0, | |
0, 0, 0, 0, 0, 0, 0, 0, | |
1, 2, 3, 4, 5, 6, 7, 8, | |
9, 10, 11, 12, 13, 14, 15, 16, | |
17, 18, 19, 20, 21, 22, 23, 24, | |
25, 26, 27, 28, 29, 30, 31, 32, | |
33, 34, 35, 36, 37, 38, 39, 40, | |
41, 42, 43, 44, 45, 46, 47, 48, | |
49, 50, 51, 52, 53, 54, 55, 56, | |
57, 58, 59, 60, 61, 62, 63, 64, | |
65, 66, 67, 68, 69, 70, 71, 72, | |
73, 74, 75, 76, 77, 78, 79, 80, | |
81, 82, 83, 84, 85, 86, 87, 88, | |
89, 90, 91, 92, 93, 94, 95, 0, | |
0, 0, 0, 0, 0, 0, 0, 0, | |
0, 0, 0, 0, 0, 0, 0, 0, | |
0, 0, 0, 0, 0, 0, 0, 0, | |
0, 0, 0, 0, 0, 0, 0, 0, | |
0, 96, 97, 98, 99, 100, 101, 102, | |
103, 104, 105, 106, 107, 108, 109, 110, | |
0, 111, 112, 113, 114, 0, 115, 116, | |
117, 118, 119, 120, 121, 122, 0, 123, | |
0, 124, 125, 126, 127, 128, 129, 130, | |
131, 0, 132, 133, 0, 134, 135, 136, | |
137, 0, 0, 0, 0, 0, 0, 0, | |
0, 0, 0, 0, 0, 0, 0, 0, | |
0, 138, 0, 139, 0, 0, 0, 0, | |
140, 141, 142, 143, 0, 0, 0, 0, | |
0, 144, 0, 0, 0, 145, 0, 0, | |
146, 147, 148, 149, 0, 0, 0, 0 | |
}; | |
static const FT_UShort cff_expert_encoding[256] = | |
{ | |
0, 0, 0, 0, 0, 0, 0, 0, | |
0, 0, 0, 0, 0, 0, 0, 0, | |
0, 0, 0, 0, 0, 0, 0, 0, | |
0, 0, 0, 0, 0, 0, 0, 0, | |
1, 229, 230, 0, 231, 232, 233, 234, | |
235, 236, 237, 238, 13, 14, 15, 99, | |
239, 240, 241, 242, 243, 244, 245, 246, | |
247, 248, 27, 28, 249, 250, 251, 252, | |
0, 253, 254, 255, 256, 257, 0, 0, | |
0, 258, 0, 0, 259, 260, 261, 262, | |
0, 0, 263, 264, 265, 0, 266, 109, | |
110, 267, 268, 269, 0, 270, 271, 272, | |
273, 274, 275, 276, 277, 278, 279, 280, | |
281, 282, 283, 284, 285, 286, 287, 288, | |
289, 290, 291, 292, 293, 294, 295, 296, | |
297, 298, 299, 300, 301, 302, 303, 0, | |
0, 0, 0, 0, 0, 0, 0, 0, | |
0, 0, 0, 0, 0, 0, 0, 0, | |
0, 0, 0, 0, 0, 0, 0, 0, | |
0, 0, 0, 0, 0, 0, 0, 0, | |
0, 304, 305, 306, 0, 0, 307, 308, | |
309, 310, 311, 0, 312, 0, 0, 312, | |
0, 0, 314, 315, 0, 0, 316, 317, | |
318, 0, 0, 0, 158, 155, 163, 319, | |
320, 321, 322, 323, 324, 325, 0, 0, | |
326, 150, 164, 169, 327, 328, 329, 330, | |
331, 332, 333, 334, 335, 336, 337, 338, | |
339, 340, 341, 342, 343, 344, 345, 346, | |
347, 348, 349, 350, 351, 352, 353, 354, | |
355, 356, 357, 358, 359, 360, 361, 362, | |
363, 364, 365, 366, 367, 368, 369, 370, | |
371, 372, 373, 374, 375, 376, 377, 378 | |
}; | |
#endif /* 1 */ | |
FT_LOCAL_DEF( FT_UShort ) | |
cff_get_standard_encoding( FT_UInt charcode ) | |
{ | |
return (FT_UShort)( charcode < 256 ? cff_standard_encoding[charcode] | |
: 0 ); | |
} | |
/*************************************************************************/ | |
/* */ | |
/* The macro FT_COMPONENT is used in trace mode. It is an implicit */ | |
/* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */ | |
/* messages during execution. */ | |
/* */ | |
#undef FT_COMPONENT | |
#define FT_COMPONENT trace_cffload | |
/* read an offset from the index's stream current position */ | |
static FT_ULong | |
cff_index_read_offset( CFF_Index idx, | |
FT_Error *errorp ) | |
{ | |
FT_Error error; | |
FT_Stream stream = idx->stream; | |
FT_Byte tmp[4]; | |
FT_ULong result = 0; | |
if ( !FT_STREAM_READ( tmp, idx->off_size ) ) | |
{ | |
FT_Int nn; | |
for ( nn = 0; nn < idx->off_size; nn++ ) | |
result = ( result << 8 ) | tmp[nn]; | |
} | |
*errorp = error; | |
return result; | |
} | |
static FT_Error | |
cff_index_init( CFF_Index idx, | |
FT_Stream stream, | |
FT_Bool load ) | |
{ | |
FT_Error error; | |
FT_Memory memory = stream->memory; | |
FT_UShort count; | |
FT_MEM_ZERO( idx, sizeof ( *idx ) ); | |
idx->stream = stream; | |
idx->start = FT_STREAM_POS(); | |
if ( !FT_READ_USHORT( count ) && | |
count > 0 ) | |
{ | |
FT_Byte offsize; | |
FT_ULong size; | |
/* there is at least one element; read the offset size, */ | |
/* then access the offset table to compute the index's total size */ | |
if ( FT_READ_BYTE( offsize ) ) | |
goto Exit; | |
if ( offsize < 1 || offsize > 4 ) | |
{ | |
error = FT_THROW( Invalid_Table ); | |
goto Exit; | |
} | |
idx->count = count; | |
idx->off_size = offsize; | |
size = (FT_ULong)( count + 1 ) * offsize; | |
idx->data_offset = idx->start + 3 + size; | |
if ( FT_STREAM_SKIP( size - offsize ) ) | |
goto Exit; | |
size = cff_index_read_offset( idx, &error ); | |
if ( error ) | |
goto Exit; | |
if ( size == 0 ) | |
{ | |
error = FT_THROW( Invalid_Table ); | |
goto Exit; | |
} | |
idx->data_size = --size; | |
if ( load ) | |
{ | |
/* load the data */ | |
if ( FT_FRAME_EXTRACT( size, idx->bytes ) ) | |
goto Exit; | |
} | |
else | |
{ | |
/* skip the data */ | |
if ( FT_STREAM_SKIP( size ) ) | |
goto Exit; | |
} | |
} | |
Exit: | |
if ( error ) | |
FT_FREE( idx->offsets ); | |
return error; | |
} | |
static void | |
cff_index_done( CFF_Index idx ) | |
{ | |
if ( idx->stream ) | |
{ | |
FT_Stream stream = idx->stream; | |
FT_Memory memory = stream->memory; | |
if ( idx->bytes ) | |
FT_FRAME_RELEASE( idx->bytes ); | |
FT_FREE( idx->offsets ); | |
FT_MEM_ZERO( idx, sizeof ( *idx ) ); | |
} | |
} | |
static FT_Error | |
cff_index_load_offsets( CFF_Index idx ) | |
{ | |
FT_Error error = FT_Err_Ok; | |
FT_Stream stream = idx->stream; | |
FT_Memory memory = stream->memory; | |
if ( idx->count > 0 && idx->offsets == NULL ) | |
{ | |
FT_Byte offsize = idx->off_size; | |
FT_ULong data_size; | |
FT_Byte* p; | |
FT_Byte* p_end; | |
FT_ULong* poff; | |
data_size = (FT_ULong)( idx->count + 1 ) * offsize; | |
if ( FT_NEW_ARRAY( idx->offsets, idx->count + 1 ) || | |
FT_STREAM_SEEK( idx->start + 3 ) || | |
FT_FRAME_ENTER( data_size ) ) | |
goto Exit; | |
poff = idx->offsets; | |
p = (FT_Byte*)stream->cursor; | |
p_end = p + data_size; | |
switch ( offsize ) | |
{ | |
case 1: | |
for ( ; p < p_end; p++, poff++ ) | |
poff[0] = p[0]; | |
break; | |
case 2: | |
for ( ; p < p_end; p += 2, poff++ ) | |
poff[0] = FT_PEEK_USHORT( p ); | |
break; | |
case 3: | |
for ( ; p < p_end; p += 3, poff++ ) | |
poff[0] = FT_PEEK_UOFF3( p ); | |
break; | |
default: | |
for ( ; p < p_end; p += 4, poff++ ) | |
poff[0] = FT_PEEK_ULONG( p ); | |
} | |
FT_FRAME_EXIT(); | |
} | |
Exit: | |
if ( error ) | |
FT_FREE( idx->offsets ); | |
return error; | |
} | |
/* Allocate a table containing pointers to an index's elements. */ | |
/* The `pool' argument makes this function convert the index */ | |
/* entries to C-style strings (this is, NULL-terminated). */ | |
static FT_Error | |
cff_index_get_pointers( CFF_Index idx, | |
FT_Byte*** table, | |
FT_Byte** pool ) | |
{ | |
FT_Error error = FT_Err_Ok; | |
FT_Memory memory = idx->stream->memory; | |
FT_Byte** t = NULL; | |
FT_Byte* new_bytes = NULL; | |
*table = NULL; | |
if ( idx->offsets == NULL ) | |
{ | |
error = cff_index_load_offsets( idx ); | |
if ( error ) | |
goto Exit; | |
} | |
if ( idx->count > 0 && | |
!FT_NEW_ARRAY( t, idx->count + 1 ) && | |
( !pool || !FT_ALLOC( new_bytes, | |
idx->data_size + idx->count ) ) ) | |
{ | |
FT_ULong n, cur_offset; | |
FT_ULong extra = 0; | |
FT_Byte* org_bytes = idx->bytes; | |
/* at this point, `idx->offsets' can't be NULL */ | |
cur_offset = idx->offsets[0] - 1; | |
/* sanity check */ | |
if ( cur_offset != 0 ) | |
{ | |
FT_TRACE0(( "cff_index_get_pointers:" | |
" invalid first offset value %d set to zero\n", | |
cur_offset )); | |
cur_offset = 0; | |
} | |
if ( !pool ) | |
t[0] = org_bytes + cur_offset; | |
else | |
t[0] = new_bytes + cur_offset; | |
for ( n = 1; n <= idx->count; n++ ) | |
{ | |
FT_ULong next_offset = idx->offsets[n] - 1; | |
/* two sanity checks for invalid offset tables */ | |
if ( next_offset < cur_offset ) | |
next_offset = cur_offset; | |
else if ( next_offset > idx->data_size ) | |
next_offset = idx->data_size; | |
if ( !pool ) | |
t[n] = org_bytes + next_offset; | |
else | |
{ | |
t[n] = new_bytes + next_offset + extra; | |
if ( next_offset != cur_offset ) | |
{ | |
FT_MEM_COPY( t[n - 1], org_bytes + cur_offset, t[n] - t[n - 1] ); | |
t[n][0] = '\0'; | |
t[n] += 1; | |
extra++; | |
} | |
} | |
cur_offset = next_offset; | |
} | |
*table = t; | |
if ( pool ) | |
*pool = new_bytes; | |
} | |
Exit: | |
return error; | |
} | |
FT_LOCAL_DEF( FT_Error ) | |
cff_index_access_element( CFF_Index idx, | |
FT_UInt element, | |
FT_Byte** pbytes, | |
FT_ULong* pbyte_len ) | |
{ | |
FT_Error error = FT_Err_Ok; | |
if ( idx && idx->count > element ) | |
{ | |
/* compute start and end offsets */ | |
FT_Stream stream = idx->stream; | |
FT_ULong off1, off2 = 0; | |
/* load offsets from file or the offset table */ | |
if ( !idx->offsets ) | |
{ | |
FT_ULong pos = element * idx->off_size; | |
if ( FT_STREAM_SEEK( idx->start + 3 + pos ) ) | |
goto Exit; | |
off1 = cff_index_read_offset( idx, &error ); | |
if ( error ) | |
goto Exit; | |
if ( off1 != 0 ) | |
{ | |
do | |
{ | |
element++; | |
off2 = cff_index_read_offset( idx, &error ); | |
} | |
while ( off2 == 0 && element < idx->count ); | |
} | |
} | |
else /* use offsets table */ | |
{ | |
off1 = idx->offsets[element]; | |
if ( off1 ) | |
{ | |
do | |
{ | |
element++; | |
off2 = idx->offsets[element]; | |
} while ( off2 == 0 && element < idx->count ); | |
} | |
} | |
/* XXX: should check off2 does not exceed the end of this entry; */ | |
/* at present, only truncate off2 at the end of this stream */ | |
if ( off2 > stream->size + 1 || | |
idx->data_offset > stream->size - off2 + 1 ) | |
{ | |
FT_ERROR(( "cff_index_access_element:" | |
" offset to next entry (%d)" | |
" exceeds the end of stream (%d)\n", | |
off2, stream->size - idx->data_offset + 1 )); | |
off2 = stream->size - idx->data_offset + 1; | |
} | |
/* access element */ | |
if ( off1 && off2 > off1 ) | |
{ | |
*pbyte_len = off2 - off1; | |
if ( idx->bytes ) | |
{ | |
/* this index was completely loaded in memory, that's easy */ | |
*pbytes = idx->bytes + off1 - 1; | |
} | |
else | |
{ | |
/* this index is still on disk/file, access it through a frame */ | |
if ( FT_STREAM_SEEK( idx->data_offset + off1 - 1 ) || | |
FT_FRAME_EXTRACT( off2 - off1, *pbytes ) ) | |
goto Exit; | |
} | |
} | |
else | |
{ | |
/* empty index element */ | |
*pbytes = 0; | |
*pbyte_len = 0; | |
} | |
} | |
else | |
error = FT_THROW( Invalid_Argument ); | |
Exit: | |
return error; | |
} | |
FT_LOCAL_DEF( void ) | |
cff_index_forget_element( CFF_Index idx, | |
FT_Byte** pbytes ) | |
{ | |
if ( idx->bytes == 0 ) | |
{ | |
FT_Stream stream = idx->stream; | |
FT_FRAME_RELEASE( *pbytes ); | |
} | |
} | |
/* get an entry from Name INDEX */ | |
FT_LOCAL_DEF( FT_String* ) | |
cff_index_get_name( CFF_Font font, | |
FT_UInt element ) | |
{ | |
CFF_Index idx = &font->name_index; | |
FT_Memory memory = idx->stream->memory; | |
FT_Byte* bytes; | |
FT_ULong byte_len; | |
FT_Error error; | |
FT_String* name = 0; | |
error = cff_index_access_element( idx, element, &bytes, &byte_len ); | |
if ( error ) | |
goto Exit; | |
if ( !FT_ALLOC( name, byte_len + 1 ) ) | |
{ | |
FT_MEM_COPY( name, bytes, byte_len ); | |
name[byte_len] = 0; | |
} | |
cff_index_forget_element( idx, &bytes ); | |
Exit: | |
return name; | |
} | |
/* get an entry from String INDEX */ | |
FT_LOCAL_DEF( FT_String* ) | |
cff_index_get_string( CFF_Font font, | |
FT_UInt element ) | |
{ | |
return ( element < font->num_strings ) | |
? (FT_String*)font->strings[element] | |
: NULL; | |
} | |
FT_LOCAL_DEF( FT_String* ) | |
cff_index_get_sid_string( CFF_Font font, | |
FT_UInt sid ) | |
{ | |
/* value 0xFFFFU indicates a missing dictionary entry */ | |
if ( sid == 0xFFFFU ) | |
return NULL; | |
/* if it is not a standard string, return it */ | |
if ( sid > 390 ) | |
return cff_index_get_string( font, sid - 391 ); | |
/* CID-keyed CFF fonts don't have glyph names */ | |
if ( !font->psnames ) | |
return NULL; | |
/* this is a standard string */ | |
return (FT_String *)font->psnames->adobe_std_strings( sid ); | |
} | |
/*************************************************************************/ | |
/*************************************************************************/ | |
/*** ***/ | |
/*** FD Select table support ***/ | |
/*** ***/ | |
/*************************************************************************/ | |
/*************************************************************************/ | |
static void | |
CFF_Done_FD_Select( CFF_FDSelect fdselect, | |
FT_Stream stream ) | |
{ | |
if ( fdselect->data ) | |
FT_FRAME_RELEASE( fdselect->data ); | |
fdselect->data_size = 0; | |
fdselect->format = 0; | |
fdselect->range_count = 0; | |
} | |
static FT_Error | |
CFF_Load_FD_Select( CFF_FDSelect fdselect, | |
FT_UInt num_glyphs, | |
FT_Stream stream, | |
FT_ULong offset ) | |
{ | |
FT_Error error; | |
FT_Byte format; | |
FT_UInt num_ranges; | |
/* read format */ | |
if ( FT_STREAM_SEEK( offset ) || FT_READ_BYTE( format ) ) | |
goto Exit; | |
fdselect->format = format; | |
fdselect->cache_count = 0; /* clear cache */ | |
switch ( format ) | |
{ | |
case 0: /* format 0, that's simple */ | |
fdselect->data_size = num_glyphs; | |
goto Load_Data; | |
case 3: /* format 3, a tad more complex */ | |
if ( FT_READ_USHORT( num_ranges ) ) | |
goto Exit; | |
if ( !num_ranges ) | |
{ | |
FT_TRACE0(( "CFF_Load_FD_Select: empty FDSelect array\n" )); | |
error = FT_THROW( Invalid_File_Format ); | |
goto Exit; | |
} | |
fdselect->data_size = num_ranges * 3 + 2; | |
Load_Data: | |
if ( FT_FRAME_EXTRACT( fdselect->data_size, fdselect->data ) ) | |
goto Exit; | |
break; | |
default: /* hmm... that's wrong */ | |
error = FT_THROW( Invalid_File_Format ); | |
} | |
Exit: | |
return error; | |
} | |
FT_LOCAL_DEF( FT_Byte ) | |
cff_fd_select_get( CFF_FDSelect fdselect, | |
FT_UInt glyph_index ) | |
{ | |
FT_Byte fd = 0; | |
switch ( fdselect->format ) | |
{ | |
case 0: | |
fd = fdselect->data[glyph_index]; | |
break; | |
case 3: | |
/* first, compare to the cache */ | |
if ( (FT_UInt)( glyph_index - fdselect->cache_first ) < | |
fdselect->cache_count ) | |
{ | |
fd = fdselect->cache_fd; | |
break; | |
} | |
/* then, look up the ranges array */ | |
{ | |
FT_Byte* p = fdselect->data; | |
FT_Byte* p_limit = p + fdselect->data_size; | |
FT_Byte fd2; | |
FT_UInt first, limit; | |
first = FT_NEXT_USHORT( p ); | |
do | |
{ | |
if ( glyph_index < first ) | |
break; | |
fd2 = *p++; | |
limit = FT_NEXT_USHORT( p ); | |
if ( glyph_index < limit ) | |
{ | |
fd = fd2; | |
/* update cache */ | |
fdselect->cache_first = first; | |
fdselect->cache_count = limit - first; | |
fdselect->cache_fd = fd2; | |
break; | |
} | |
first = limit; | |
} while ( p < p_limit ); | |
} | |
break; | |
default: | |
; | |
} | |
return fd; | |
} | |
/*************************************************************************/ | |
/*************************************************************************/ | |
/*** ***/ | |
/*** CFF font support ***/ | |
/*** ***/ | |
/*************************************************************************/ | |
/*************************************************************************/ | |
static FT_Error | |
cff_charset_compute_cids( CFF_Charset charset, | |
FT_UInt num_glyphs, | |
FT_Memory memory ) | |
{ | |
FT_Error error = FT_Err_Ok; | |
FT_UInt i; | |
FT_Long j; | |
FT_UShort max_cid = 0; | |
if ( charset->max_cid > 0 ) | |
goto Exit; | |
for ( i = 0; i < num_glyphs; i++ ) | |
{ | |
if ( charset->sids[i] > max_cid ) | |
max_cid = charset->sids[i]; | |
} | |
if ( FT_NEW_ARRAY( charset->cids, (FT_ULong)max_cid + 1 ) ) | |
goto Exit; | |
/* When multiple GIDs map to the same CID, we choose the lowest */ | |
/* GID. This is not described in any spec, but it matches the */ | |
/* behaviour of recent Acroread versions. */ | |
for ( j = (FT_Long)num_glyphs - 1; j >= 0 ; j-- ) | |
charset->cids[charset->sids[j]] = (FT_UShort)j; | |
charset->max_cid = max_cid; | |
charset->num_glyphs = num_glyphs; | |
Exit: | |
return error; | |
} | |
FT_LOCAL_DEF( FT_UInt ) | |
cff_charset_cid_to_gindex( CFF_Charset charset, | |
FT_UInt cid ) | |
{ | |
FT_UInt result = 0; | |
if ( cid <= charset->max_cid ) | |
result = charset->cids[cid]; | |
return result; | |
} | |
static void | |
cff_charset_free_cids( CFF_Charset charset, | |
FT_Memory memory ) | |
{ | |
FT_FREE( charset->cids ); | |
charset->max_cid = 0; | |
} | |
static void | |
cff_charset_done( CFF_Charset charset, | |
FT_Stream stream ) | |
{ | |
FT_Memory memory = stream->memory; | |
cff_charset_free_cids( charset, memory ); | |
FT_FREE( charset->sids ); | |
charset->format = 0; | |
charset->offset = 0; | |
} | |
static FT_Error | |
cff_charset_load( CFF_Charset charset, | |
FT_UInt num_glyphs, | |
FT_Stream stream, | |
FT_ULong base_offset, | |
FT_ULong offset, | |
FT_Bool invert ) | |
{ | |
FT_Memory memory = stream->memory; | |
FT_Error error = FT_Err_Ok; | |
FT_UShort glyph_sid; | |
/* If the the offset is greater than 2, we have to parse the */ | |
/* charset table. */ | |
if ( offset > 2 ) | |
{ | |
FT_UInt j; | |
charset->offset = base_offset + offset; | |
/* Get the format of the table. */ | |
if ( FT_STREAM_SEEK( charset->offset ) || | |
FT_READ_BYTE( charset->format ) ) | |
goto Exit; | |
/* Allocate memory for sids. */ | |
if ( FT_NEW_ARRAY( charset->sids, num_glyphs ) ) | |
goto Exit; | |
/* assign the .notdef glyph */ | |
charset->sids[0] = 0; | |
switch ( charset->format ) | |
{ | |
case 0: | |
if ( num_glyphs > 0 ) | |
{ | |
if ( FT_FRAME_ENTER( ( num_glyphs - 1 ) * 2 ) ) | |
goto Exit; | |
for ( j = 1; j < num_glyphs; j++ ) | |
charset->sids[j] = FT_GET_USHORT(); | |
FT_FRAME_EXIT(); | |
} | |
break; | |
case 1: | |
case 2: | |
{ | |
FT_UInt nleft; | |
FT_UInt i; | |
j = 1; | |
while ( j < num_glyphs ) | |
{ | |
/* Read the first glyph sid of the range. */ | |
if ( FT_READ_USHORT( glyph_sid ) ) | |
goto Exit; | |
/* Read the number of glyphs in the range. */ | |
if ( charset->format == 2 ) | |
{ | |
if ( FT_READ_USHORT( nleft ) ) | |
goto Exit; | |
} | |
else | |
{ | |
if ( FT_READ_BYTE( nleft ) ) | |
goto Exit; | |
} | |
/* try to rescue some of the SIDs if `nleft' is too large */ | |
if ( glyph_sid > 0xFFFFL - nleft ) | |
{ | |
FT_ERROR(( "cff_charset_load: invalid SID range trimmed" | |
" nleft=%d -> %d\n", nleft, 0xFFFFL - glyph_sid )); | |
nleft = ( FT_UInt )( 0xFFFFL - glyph_sid ); | |
} | |
/* Fill in the range of sids -- `nleft + 1' glyphs. */ | |
for ( i = 0; j < num_glyphs && i <= nleft; i++, j++, glyph_sid++ ) | |
charset->sids[j] = glyph_sid; | |
} | |
} | |
break; | |
default: | |
FT_ERROR(( "cff_charset_load: invalid table format\n" )); | |
error = FT_THROW( Invalid_File_Format ); | |
goto Exit; | |
} | |
} | |
else | |
{ | |
/* Parse default tables corresponding to offset == 0, 1, or 2. */ | |
/* CFF specification intimates the following: */ | |
/* */ | |
/* In order to use a predefined charset, the following must be */ | |
/* true: The charset constructed for the glyphs in the font's */ | |
/* charstrings dictionary must match the predefined charset in */ | |
/* the first num_glyphs. */ | |
charset->offset = offset; /* record charset type */ | |
switch ( (FT_UInt)offset ) | |
{ | |
case 0: | |
if ( num_glyphs > 229 ) | |
{ | |
FT_ERROR(( "cff_charset_load: implicit charset larger than\n" | |
"predefined charset (Adobe ISO-Latin)\n" )); | |
error = FT_THROW( Invalid_File_Format ); | |
goto Exit; | |
} | |
/* Allocate memory for sids. */ | |
if ( FT_NEW_ARRAY( charset->sids, num_glyphs ) ) | |
goto Exit; | |
/* Copy the predefined charset into the allocated memory. */ | |
FT_ARRAY_COPY( charset->sids, cff_isoadobe_charset, num_glyphs ); | |
break; | |
case 1: | |
if ( num_glyphs > 166 ) | |
{ | |
FT_ERROR(( "cff_charset_load: implicit charset larger than\n" | |
"predefined charset (Adobe Expert)\n" )); | |
error = FT_THROW( Invalid_File_Format ); | |
goto Exit; | |
} | |
/* Allocate memory for sids. */ | |
if ( FT_NEW_ARRAY( charset->sids, num_glyphs ) ) | |
goto Exit; | |
/* Copy the predefined charset into the allocated memory. */ | |
FT_ARRAY_COPY( charset->sids, cff_expert_charset, num_glyphs ); | |
break; | |
case 2: | |
if ( num_glyphs > 87 ) | |
{ | |
FT_ERROR(( "cff_charset_load: implicit charset larger than\n" | |
"predefined charset (Adobe Expert Subset)\n" )); | |
error = FT_THROW( Invalid_File_Format ); | |
goto Exit; | |
} | |
/* Allocate memory for sids. */ | |
if ( FT_NEW_ARRAY( charset->sids, num_glyphs ) ) | |
goto Exit; | |
/* Copy the predefined charset into the allocated memory. */ | |
FT_ARRAY_COPY( charset->sids, cff_expertsubset_charset, num_glyphs ); | |
break; | |
default: | |
error = FT_THROW( Invalid_File_Format ); | |
goto Exit; | |
} | |
} | |
/* we have to invert the `sids' array for subsetted CID-keyed fonts */ | |
if ( invert ) | |
error = cff_charset_compute_cids( charset, num_glyphs, memory ); | |
Exit: | |
/* Clean up if there was an error. */ | |
if ( error ) | |
{ | |
FT_FREE( charset->sids ); | |
FT_FREE( charset->cids ); | |
charset->format = 0; | |
charset->offset = 0; | |
charset->sids = 0; | |
} | |
return error; | |
} | |
static void | |
cff_encoding_done( CFF_Encoding encoding ) | |
{ | |
encoding->format = 0; | |
encoding->offset = 0; | |
encoding->count = 0; | |
} | |
static FT_Error | |
cff_encoding_load( CFF_Encoding encoding, | |
CFF_Charset charset, | |
FT_UInt num_glyphs, | |
FT_Stream stream, | |
FT_ULong base_offset, | |
FT_ULong offset ) | |
{ | |
FT_Error error = FT_Err_Ok; | |
FT_UInt count; | |
FT_UInt j; | |
FT_UShort glyph_sid; | |
FT_UInt glyph_code; | |
/* Check for charset->sids. If we do not have this, we fail. */ | |
if ( !charset->sids ) | |
{ | |
error = FT_THROW( Invalid_File_Format ); | |
goto Exit; | |
} | |
/* Zero out the code to gid/sid mappings. */ | |
for ( j = 0; j < 256; j++ ) | |
{ | |
encoding->sids [j] = 0; | |
encoding->codes[j] = 0; | |
} | |
/* Note: The encoding table in a CFF font is indexed by glyph index; */ | |
/* the first encoded glyph index is 1. Hence, we read the character */ | |
/* code (`glyph_code') at index j and make the assignment: */ | |
/* */ | |
/* encoding->codes[glyph_code] = j + 1 */ | |
/* */ | |
/* We also make the assignment: */ | |
/* */ | |
/* encoding->sids[glyph_code] = charset->sids[j + 1] */ | |
/* */ | |
/* This gives us both a code to GID and a code to SID mapping. */ | |
if ( offset > 1 ) | |
{ | |
encoding->offset = base_offset + offset; | |
/* we need to parse the table to determine its size */ | |
if ( FT_STREAM_SEEK( encoding->offset ) || | |
FT_READ_BYTE( encoding->format ) || | |
FT_READ_BYTE( count ) ) | |
goto Exit; | |
switch ( encoding->format & 0x7F ) | |
{ | |
case 0: | |
{ | |
FT_Byte* p; | |
/* By convention, GID 0 is always ".notdef" and is never */ | |
/* coded in the font. Hence, the number of codes found */ | |
/* in the table is `count+1'. */ | |
/* */ | |
encoding->count = count + 1; | |
if ( FT_FRAME_ENTER( count ) ) | |
goto Exit; | |
p = (FT_Byte*)stream->cursor; | |
for ( j = 1; j <= count; j++ ) | |
{ | |
glyph_code = *p++; | |
/* Make sure j is not too big. */ | |
if ( j < num_glyphs ) | |
{ | |
/* Assign code to GID mapping. */ | |
encoding->codes[glyph_code] = (FT_UShort)j; | |
/* Assign code to SID mapping. */ | |
encoding->sids[glyph_code] = charset->sids[j]; | |
} | |
} | |
FT_FRAME_EXIT(); | |
} | |
break; | |
case 1: | |
{ | |
FT_UInt nleft; | |
FT_UInt i = 1; | |
FT_UInt k; | |
encoding->count = 0; | |
/* Parse the Format1 ranges. */ | |
for ( j = 0; j < count; j++, i += nleft ) | |
{ | |
/* Read the first glyph code of the range. */ | |
if ( FT_READ_BYTE( glyph_code ) ) | |
goto Exit; | |
/* Read the number of codes in the range. */ | |
if ( FT_READ_BYTE( nleft ) ) | |
goto Exit; | |
/* Increment nleft, so we read `nleft + 1' codes/sids. */ | |
nleft++; | |
/* compute max number of character codes */ | |
if ( (FT_UInt)nleft > encoding->count ) | |
encoding->count = nleft; | |
/* Fill in the range of codes/sids. */ | |
for ( k = i; k < nleft + i; k++, glyph_code++ ) | |
{ | |
/* Make sure k is not too big. */ | |
if ( k < num_glyphs && glyph_code < 256 ) | |
{ | |
/* Assign code to GID mapping. */ | |
encoding->codes[glyph_code] = (FT_UShort)k; | |
/* Assign code to SID mapping. */ | |
encoding->sids[glyph_code] = charset->sids[k]; | |
} | |
} | |
} | |
/* simple check; one never knows what can be found in a font */ | |
if ( encoding->count > 256 ) | |
encoding->count = 256; | |
} | |
break; | |
default: | |
FT_ERROR(( "cff_encoding_load: invalid table format\n" )); | |
error = FT_THROW( Invalid_File_Format ); | |
goto Exit; | |
} | |
/* Parse supplemental encodings, if any. */ | |
if ( encoding->format & 0x80 ) | |
{ | |
FT_UInt gindex; | |
/* count supplements */ | |
if ( FT_READ_BYTE( count ) ) | |
goto Exit; | |
for ( j = 0; j < count; j++ ) | |
{ | |
/* Read supplemental glyph code. */ | |
if ( FT_READ_BYTE( glyph_code ) ) | |
goto Exit; | |
/* Read the SID associated with this glyph code. */ | |
if ( FT_READ_USHORT( glyph_sid ) ) | |
goto Exit; | |
/* Assign code to SID mapping. */ | |
encoding->sids[glyph_code] = glyph_sid; | |
/* First, look up GID which has been assigned to */ | |
/* SID glyph_sid. */ | |
for ( gindex = 0; gindex < num_glyphs; gindex++ ) | |
{ | |
if ( charset->sids[gindex] == glyph_sid ) | |
{ | |
encoding->codes[glyph_code] = (FT_UShort)gindex; | |
break; | |
} | |
} | |
} | |
} | |
} | |
else | |
{ | |
/* We take into account the fact a CFF font can use a predefined */ | |
/* encoding without containing all of the glyphs encoded by this */ | |
/* encoding (see the note at the end of section 12 in the CFF */ | |
/* specification). */ | |
switch ( (FT_UInt)offset ) | |
{ | |
case 0: | |
/* First, copy the code to SID mapping. */ | |
FT_ARRAY_COPY( encoding->sids, cff_standard_encoding, 256 ); | |
goto Populate; | |
case 1: | |
/* First, copy the code to SID mapping. */ | |
FT_ARRAY_COPY( encoding->sids, cff_expert_encoding, 256 ); | |
Populate: | |
/* Construct code to GID mapping from code to SID mapping */ | |
/* and charset. */ | |
encoding->count = 0; | |
error = cff_charset_compute_cids( charset, num_glyphs, | |
stream->memory ); | |
if ( error ) | |
goto Exit; | |
for ( j = 0; j < 256; j++ ) | |
{ | |
FT_UInt sid = encoding->sids[j]; | |
FT_UInt gid = 0; | |
if ( sid ) | |
gid = cff_charset_cid_to_gindex( charset, sid ); | |
if ( gid != 0 ) | |
{ | |
encoding->codes[j] = (FT_UShort)gid; | |
encoding->count = j + 1; | |
} | |
else | |
{ | |
encoding->codes[j] = 0; | |
encoding->sids [j] = 0; | |
} | |
} | |
break; | |
default: | |
FT_ERROR(( "cff_encoding_load: invalid table format\n" )); | |
error = FT_THROW( Invalid_File_Format ); | |
goto Exit; | |
} | |
} | |
Exit: | |
/* Clean up if there was an error. */ | |
return error; | |
} | |
static FT_Error | |
cff_subfont_load( CFF_SubFont font, | |
CFF_Index idx, | |
FT_UInt font_index, | |
FT_Stream stream, | |
FT_ULong base_offset, | |
FT_Library library ) | |
{ | |
FT_Error error; | |
CFF_ParserRec parser; | |
FT_Byte* dict = NULL; | |
FT_ULong dict_len; | |
CFF_FontRecDict top = &font->font_dict; | |
CFF_Private priv = &font->private_dict; | |
cff_parser_init( &parser, CFF_CODE_TOPDICT, &font->font_dict, library ); | |
/* set defaults */ | |
FT_MEM_ZERO( top, sizeof ( *top ) ); | |
top->underline_position = -( 100L << 16 ); | |
top->underline_thickness = 50L << 16; | |
top->charstring_type = 2; | |
top->font_matrix.xx = 0x10000L; | |
top->font_matrix.yy = 0x10000L; | |
top->cid_count = 8720; | |
/* we use the implementation specific SID value 0xFFFF to indicate */ | |
/* missing entries */ | |
top->version = 0xFFFFU; | |
top->notice = 0xFFFFU; | |
top->copyright = 0xFFFFU; | |
top->full_name = 0xFFFFU; | |
top->family_name = 0xFFFFU; | |
top->weight = 0xFFFFU; | |
top->embedded_postscript = 0xFFFFU; | |
top->cid_registry = 0xFFFFU; | |
top->cid_ordering = 0xFFFFU; | |
top->cid_font_name = 0xFFFFU; | |
error = cff_index_access_element( idx, font_index, &dict, &dict_len ); | |
if ( !error ) | |
{ | |
FT_TRACE4(( " top dictionary:\n" )); | |
error = cff_parser_run( &parser, dict, dict + dict_len ); | |
} | |
cff_index_forget_element( idx, &dict ); | |
if ( error ) | |
goto Exit; | |
/* if it is a CID font, we stop there */ | |
if ( top->cid_registry != 0xFFFFU ) | |
goto Exit; | |
/* parse the private dictionary, if any */ | |
if ( top->private_offset && top->private_size ) | |
{ | |
/* set defaults */ | |
FT_MEM_ZERO( priv, sizeof ( *priv ) ); | |
priv->blue_shift = 7; | |
priv->blue_fuzz = 1; | |
priv->lenIV = -1; | |
priv->expansion_factor = (FT_Fixed)( 0.06 * 0x10000L ); | |
priv->blue_scale = (FT_Fixed)( 0.039625 * 0x10000L * 1000 ); | |
cff_parser_init( &parser, CFF_CODE_PRIVATE, priv, library ); | |
if ( FT_STREAM_SEEK( base_offset + font->font_dict.private_offset ) || | |
FT_FRAME_ENTER( font->font_dict.private_size ) ) | |
goto Exit; | |
FT_TRACE4(( " private dictionary:\n" )); | |
error = cff_parser_run( &parser, | |
(FT_Byte*)stream->cursor, | |
(FT_Byte*)stream->limit ); | |
FT_FRAME_EXIT(); | |
if ( error ) | |
goto Exit; | |
/* ensure that `num_blue_values' is even */ | |
priv->num_blue_values &= ~1; | |
} | |
/* read the local subrs, if any */ | |
if ( priv->local_subrs_offset ) | |
{ | |
if ( FT_STREAM_SEEK( base_offset + top->private_offset + | |
priv->local_subrs_offset ) ) | |
goto Exit; | |
error = cff_index_init( &font->local_subrs_index, stream, 1 ); | |
if ( error ) | |
goto Exit; | |
error = cff_index_get_pointers( &font->local_subrs_index, | |
&font->local_subrs, NULL ); | |
if ( error ) | |
goto Exit; | |
} | |
Exit: | |
return error; | |
} | |
static void | |
cff_subfont_done( FT_Memory memory, | |
CFF_SubFont subfont ) | |
{ | |
if ( subfont ) | |
{ | |
cff_index_done( &subfont->local_subrs_index ); | |
FT_FREE( subfont->local_subrs ); | |
} | |
} | |
FT_LOCAL_DEF( FT_Error ) | |
cff_font_load( FT_Library library, | |
FT_Stream stream, | |
FT_Int face_index, | |
CFF_Font font, | |
FT_Bool pure_cff ) | |
{ | |
static const FT_Frame_Field cff_header_fields[] = | |
{ | |
#undef FT_STRUCTURE | |
#define FT_STRUCTURE CFF_FontRec | |
FT_FRAME_START( 4 ), | |
FT_FRAME_BYTE( version_major ), | |
FT_FRAME_BYTE( version_minor ), | |
FT_FRAME_BYTE( header_size ), | |
FT_FRAME_BYTE( absolute_offsize ), | |
FT_FRAME_END | |
}; | |
FT_Error error; | |
FT_Memory memory = stream->memory; | |
FT_ULong base_offset; | |
CFF_FontRecDict dict; | |
CFF_IndexRec string_index; | |
FT_UInt subfont_index; | |
FT_ZERO( font ); | |
FT_ZERO( &string_index ); | |
font->stream = stream; | |
font->memory = memory; | |
dict = &font->top_font.font_dict; | |
base_offset = FT_STREAM_POS(); | |
/* read CFF font header */ | |
if ( FT_STREAM_READ_FIELDS( cff_header_fields, font ) ) | |
goto Exit; | |
/* check format */ | |
if ( font->version_major != 1 || | |
font->header_size < 4 || | |
font->absolute_offsize > 4 ) | |
{ | |
FT_TRACE2(( " not a CFF font header\n" )); | |
error = FT_THROW( Unknown_File_Format ); | |
goto Exit; | |
} | |
/* skip the rest of the header */ | |
if ( FT_STREAM_SKIP( font->header_size - 4 ) ) | |
goto Exit; | |
/* read the name, top dict, string and global subrs index */ | |
if ( FT_SET_ERROR( cff_index_init( &font->name_index, | |
stream, 0 ) ) || | |
FT_SET_ERROR( cff_index_init( &font->font_dict_index, | |
stream, 0 ) ) || | |
FT_SET_ERROR( cff_index_init( &string_index, | |
stream, 1 ) ) || | |
FT_SET_ERROR( cff_index_init( &font->global_subrs_index, | |
stream, 1 ) ) || | |
FT_SET_ERROR( cff_index_get_pointers( &string_index, | |
&font->strings, | |
&font->string_pool ) ) ) | |
goto Exit; | |
font->num_strings = string_index.count; | |
if ( pure_cff ) | |
{ | |
/* well, we don't really forget the `disabled' fonts... */ | |
subfont_index = (FT_UInt)( face_index & 0xFFFF ); | |
if ( face_index > 0 && subfont_index >= font->name_index.count ) | |
{ | |
FT_ERROR(( "cff_font_load:" | |
" invalid subfont index for pure CFF font (%d)\n", | |
subfont_index )); | |
error = FT_THROW( Invalid_Argument ); | |
goto Exit; | |
} | |
font->num_faces = font->name_index.count; | |
} | |
else | |
{ | |
subfont_index = 0; | |
if ( font->name_index.count > 1 ) | |
{ | |
FT_ERROR(( "cff_font_load:" | |
" invalid CFF font with multiple subfonts\n" | |
" " | |
" in SFNT wrapper\n" )); | |
error = FT_THROW( Invalid_File_Format ); | |
goto Exit; | |
} | |
} | |
/* in case of a font format check, simply exit now */ | |
if ( face_index < 0 ) | |
goto Exit; | |
/* now, parse the top-level font dictionary */ | |
FT_TRACE4(( "parsing top-level\n" )); | |
error = cff_subfont_load( &font->top_font, | |
&font->font_dict_index, | |
subfont_index, | |
stream, | |
base_offset, | |
library ); | |
if ( error ) | |
goto Exit; | |
if ( FT_STREAM_SEEK( base_offset + dict->charstrings_offset ) ) | |
goto Exit; | |
error = cff_index_init( &font->charstrings_index, stream, 0 ); | |
if ( error ) | |
goto Exit; | |
/* now, check for a CID font */ | |
if ( dict->cid_registry != 0xFFFFU ) | |
{ | |
CFF_IndexRec fd_index; | |
CFF_SubFont sub = NULL; | |
FT_UInt idx; | |
/* this is a CID-keyed font, we must now allocate a table of */ | |
/* sub-fonts, then load each of them separately */ | |
if ( FT_STREAM_SEEK( base_offset + dict->cid_fd_array_offset ) ) | |
goto Exit; | |
error = cff_index_init( &fd_index, stream, 0 ); | |
if ( error ) | |
goto Exit; | |
if ( fd_index.count > CFF_MAX_CID_FONTS ) | |
{ | |
FT_TRACE0(( "cff_font_load: FD array too large in CID font\n" )); | |
goto Fail_CID; | |
} | |
/* allocate & read each font dict independently */ | |
font->num_subfonts = fd_index.count; | |
if ( FT_NEW_ARRAY( sub, fd_index.count ) ) | |
goto Fail_CID; | |
/* set up pointer table */ | |
for ( idx = 0; idx < fd_index.count; idx++ ) | |
font->subfonts[idx] = sub + idx; | |
/* now load each subfont independently */ | |
for ( idx = 0; idx < fd_index.count; idx++ ) | |
{ | |
sub = font->subfonts[idx]; | |
FT_TRACE4(( "parsing subfont %u\n", idx )); | |
error = cff_subfont_load( sub, &fd_index, idx, | |
stream, base_offset, library ); | |
if ( error ) | |
goto Fail_CID; | |
} | |
/* now load the FD Select array */ | |
error = CFF_Load_FD_Select( &font->fd_select, | |
font->charstrings_index.count, | |
stream, | |
base_offset + dict->cid_fd_select_offset ); | |
Fail_CID: | |
cff_index_done( &fd_index ); | |
if ( error ) | |
goto Exit; | |
} | |
else | |
font->num_subfonts = 0; | |
/* read the charstrings index now */ | |
if ( dict->charstrings_offset == 0 ) | |
{ | |
FT_ERROR(( "cff_font_load: no charstrings offset\n" )); | |
error = FT_THROW( Invalid_File_Format ); | |
goto Exit; | |
} | |
font->num_glyphs = font->charstrings_index.count; | |
error = cff_index_get_pointers( &font->global_subrs_index, | |
&font->global_subrs, NULL ); | |
if ( error ) | |
goto Exit; | |
/* read the Charset and Encoding tables if available */ | |
if ( font->num_glyphs > 0 ) | |
{ | |
FT_Bool invert = FT_BOOL( dict->cid_registry != 0xFFFFU && pure_cff ); | |
error = cff_charset_load( &font->charset, font->num_glyphs, stream, | |
base_offset, dict->charset_offset, invert ); | |
if ( error ) | |
goto Exit; | |
/* CID-keyed CFFs don't have an encoding */ | |
if ( dict->cid_registry == 0xFFFFU ) | |
{ | |
error = cff_encoding_load( &font->encoding, | |
&font->charset, | |
font->num_glyphs, | |
stream, | |
base_offset, | |
dict->encoding_offset ); | |
if ( error ) | |
goto Exit; | |
} | |
} | |
/* get the font name (/CIDFontName for CID-keyed fonts, */ | |
/* /FontName otherwise) */ | |
font->font_name = cff_index_get_name( font, subfont_index ); | |
Exit: | |
cff_index_done( &string_index ); | |
return error; | |
} | |
FT_LOCAL_DEF( void ) | |
cff_font_done( CFF_Font font ) | |
{ | |
FT_Memory memory = font->memory; | |
FT_UInt idx; | |
cff_index_done( &font->global_subrs_index ); | |
cff_index_done( &font->font_dict_index ); | |
cff_index_done( &font->name_index ); | |
cff_index_done( &font->charstrings_index ); | |
/* release font dictionaries, but only if working with */ | |
/* a CID keyed CFF font */ | |
if ( font->num_subfonts > 0 ) | |
{ | |
for ( idx = 0; idx < font->num_subfonts; idx++ ) | |
cff_subfont_done( memory, font->subfonts[idx] ); | |
/* the subfonts array has been allocated as a single block */ | |
FT_FREE( font->subfonts[0] ); | |
} | |
cff_encoding_done( &font->encoding ); | |
cff_charset_done( &font->charset, font->stream ); | |
cff_subfont_done( memory, &font->top_font ); | |
CFF_Done_FD_Select( &font->fd_select, font->stream ); | |
FT_FREE( font->font_info ); | |
FT_FREE( font->font_name ); | |
FT_FREE( font->global_subrs ); | |
FT_FREE( font->strings ); | |
FT_FREE( font->string_pool ); | |
if ( font->cf2_instance.finalizer ) | |
{ | |
font->cf2_instance.finalizer( font->cf2_instance.data ); | |
FT_FREE( font->cf2_instance.data ); | |
} | |
} | |
/* END */ |