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Diffstat (limited to 'nx-X11/extras/freetype2/src/cff/cffload.c')
-rw-r--r--nx-X11/extras/freetype2/src/cff/cffload.c2313
1 files changed, 2313 insertions, 0 deletions
diff --git a/nx-X11/extras/freetype2/src/cff/cffload.c b/nx-X11/extras/freetype2/src/cff/cffload.c
new file mode 100644
index 000000000..350e01f3f
--- /dev/null
+++ b/nx-X11/extras/freetype2/src/cff/cffload.c
@@ -0,0 +1,2313 @@
+/***************************************************************************/
+/* */
+/* cffload.c */
+/* */
+/* OpenType and CFF data/program tables loader (body). */
+/* */
+/* Copyright 1996-2001, 2002, 2003, 2004 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_SERVICE_POSTSCRIPT_CMAPS_H
+#include FT_TRUETYPE_TAGS_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
+
+
+ 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 a CFF offset from memory */
+ static FT_ULong
+ cff_get_offset( FT_Byte* p,
+ FT_Byte off_size )
+ {
+ FT_ULong result;
+
+
+ for ( result = 0; off_size > 0; off_size-- )
+ {
+ result <<= 8;
+ result |= *p++;
+ }
+
+ return result;
+ }
+
+
+ static FT_Error
+ cff_new_index( 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;
+ if ( !FT_READ_USHORT( count ) &&
+ count > 0 )
+ {
+ FT_Byte* p;
+ FT_Byte offsize;
+ FT_ULong data_size;
+ FT_ULong* poff;
+
+
+ /* 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;
+
+ idx->stream = stream;
+ idx->count = count;
+ idx->off_size = offsize;
+ data_size = (FT_ULong)( count + 1 ) * offsize;
+
+ if ( FT_NEW_ARRAY( idx->offsets, count + 1 ) ||
+ FT_FRAME_ENTER( data_size ) )
+ goto Exit;
+
+ poff = idx->offsets;
+ p = (FT_Byte*)stream->cursor;
+
+ for ( ; (FT_Short)count >= 0; count-- )
+ {
+ poff[0] = cff_get_offset( p, offsize );
+ poff++;
+ p += offsize;
+ }
+
+ FT_FRAME_EXIT();
+
+ idx->data_offset = FT_STREAM_POS();
+ data_size = poff[-1] - 1;
+
+ if ( load )
+ {
+ /* load the data */
+ if ( FT_FRAME_EXTRACT( data_size, idx->bytes ) )
+ goto Exit;
+ }
+ else
+ {
+ /* skip the data */
+ if ( FT_STREAM_SKIP( data_size ) )
+ goto Exit;
+ }
+ }
+
+ Exit:
+ if ( error )
+ FT_FREE( idx->offsets );
+
+ return error;
+ }
+
+
+ static void
+ cff_done_index( 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 ) );
+ }
+ }
+
+
+ /* allocate a table containing pointers to an index's elements */
+ static FT_Error
+ cff_index_get_pointers( CFF_Index idx,
+ FT_Byte*** table )
+ {
+ FT_Error error = CFF_Err_Ok;
+ FT_Memory memory = idx->stream->memory;
+ FT_ULong n, offset, old_offset;
+ FT_Byte** t;
+
+
+ *table = 0;
+
+ if ( idx->count > 0 && !FT_NEW_ARRAY( t, idx->count + 1 ) )
+ {
+ old_offset = 1;
+ for ( n = 0; n <= idx->count; n++ )
+ {
+ offset = idx->offsets[n];
+ if ( !offset )
+ offset = old_offset;
+
+ t[n] = idx->bytes + offset - 1;
+
+ old_offset = offset;
+ }
+ *table = t;
+ }
+
+ 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 = CFF_Err_Ok;
+
+
+ if ( idx && idx->count > element )
+ {
+ /* compute start and end offsets */
+ FT_ULong off1, off2 = 0;
+
+
+ off1 = idx->offsets[element];
+ if ( off1 )
+ {
+ do
+ {
+ element++;
+ off2 = idx->offsets[element];
+
+ } while ( off2 == 0 && element < idx->count );
+
+ if ( !off2 )
+ off1 = 0;
+ }
+
+ /* access element */
+ if ( 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 */
+ FT_Stream stream = idx->stream;
+
+
+ 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 = CFF_Err_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 );
+ }
+ }
+
+
+ FT_LOCAL_DEF( FT_String* )
+ cff_index_get_name( CFF_Index idx,
+ FT_UInt element )
+ {
+ 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;
+ }
+
+
+ FT_LOCAL_DEF( FT_String* )
+ cff_index_get_sid_string( CFF_Index idx,
+ FT_UInt sid,
+ FT_Service_PsCMaps psnames )
+ {
+ /* value 0xFFFFU indicates a missing dictionary entry */
+ if ( sid == 0xFFFFU )
+ return 0;
+
+ /* if it is not a standard string, return it */
+ if ( sid > 390 )
+ return cff_index_get_name( idx, sid - 391 );
+
+ /* CID-keyed CFF fonts don't have glyph names */
+ if ( !psnames )
+ return 0;
+
+ /* that's a standard string, fetch a copy from the PSName module */
+ {
+ FT_String* name = 0;
+ const char* adobe_name = psnames->adobe_std_strings( sid );
+ FT_UInt len;
+
+
+ if ( adobe_name )
+ {
+ FT_Memory memory = idx->stream->memory;
+ FT_Error error;
+
+
+ len = (FT_UInt)ft_strlen( adobe_name );
+ if ( !FT_ALLOC( name, len + 1 ) )
+ {
+ FT_MEM_COPY( name, adobe_name, len );
+ name[len] = 0;
+ }
+
+ FT_UNUSED( error );
+ }
+
+ return name;
+ }
+ }
+
+
+ /*************************************************************************/
+ /*************************************************************************/
+ /*** ***/
+ /*** 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;
+
+ 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 = CFF_Err_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 cache */
+ if ( (FT_UInt)( glyph_index - fdselect->cache_first ) <
+ fdselect->cache_count )
+ {
+ fd = fdselect->cache_fd;
+ break;
+ }
+
+ /* then, lookup 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 void
+ cff_charset_done( CFF_Charset charset,
+ FT_Stream stream )
+ {
+ FT_Memory memory = stream->memory;
+
+
+ FT_FREE( charset->sids );
+ FT_FREE( charset->cids );
+ 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 = CFF_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;
+ }
+
+ /* 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 = CFF_Err_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 = CFF_Err_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 = CFF_Err_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 = CFF_Err_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 = CFF_Err_Invalid_File_Format;
+ goto Exit;
+ }
+ }
+
+ /* we have to invert the `sids' array for subsetted CID-keyed fonts */
+ if ( invert )
+ {
+ FT_UInt i;
+ FT_UShort max_cid = 0;
+
+
+ for ( i = 0; i < num_glyphs; i++ )
+ if ( charset->sids[i] > max_cid )
+ max_cid = charset->sids[i];
+ max_cid++;
+
+ if ( FT_NEW_ARRAY( charset->cids, max_cid ) )
+ goto Exit;
+ FT_MEM_ZERO( charset->cids, sizeof ( FT_UShort ) * max_cid );
+
+ for ( i = 0; i < num_glyphs; i++ )
+ charset->cids[charset->sids[i]] = i;
+ }
+
+ 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 = CFF_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 = CFF_Err_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 = CFF_Err_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
+ {
+ FT_UInt i;
+
+
+ /* 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;
+
+ for ( j = 0; j < 256; j++ )
+ {
+ /* If j is encoded, find the GID for it. */
+ if ( encoding->sids[j] )
+ {
+ for ( i = 1; i < num_glyphs; i++ )
+ /* We matched, so break. */
+ if ( charset->sids[i] == encoding->sids[j] )
+ break;
+
+ /* i will be equal to num_glyphs if we exited the above */
+ /* loop without a match. In this case, we also have to */
+ /* fix the code to SID mapping. */
+ if ( i == num_glyphs )
+ {
+ encoding->codes[j] = 0;
+ encoding->sids [j] = 0;
+ }
+ else
+ {
+ encoding->codes[j] = (FT_UShort)i;
+
+ /* update encoding count */
+ if ( encoding->count < j + 1 )
+ encoding->count = j + 1;
+ }
+ }
+ }
+ break;
+
+ default:
+ FT_ERROR(( "cff_encoding_load: invalid table format!\n" ));
+ error = CFF_Err_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_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 );
+
+ /* 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 ) ||
+ 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 );
+
+ if ( FT_STREAM_SEEK( base_offset + font->font_dict.private_offset ) ||
+ FT_FRAME_ENTER( font->font_dict.private_size ) )
+ goto Exit;
+
+ error = cff_parser_run( &parser,
+ (FT_Byte*)stream->cursor,
+ (FT_Byte*)stream->limit );
+ FT_FRAME_EXIT();
+ if ( error )
+ goto Exit;
+ }
+
+ /* 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_new_index( &font->local_subrs_index, stream, 1 );
+ if ( error )
+ goto Exit;
+
+ font->num_local_subrs = font->local_subrs_index.count;
+ error = cff_index_get_pointers( &font->local_subrs_index,
+ &font->local_subrs );
+ if ( error )
+ goto Exit;
+ }
+
+ Exit:
+ return error;
+ }
+
+
+ static void
+ cff_subfont_done( FT_Memory memory,
+ CFF_SubFont subfont )
+ {
+ if ( subfont )
+ {
+ cff_done_index( &subfont->local_subrs_index );
+ FT_FREE( subfont->local_subrs );
+ }
+ }
+
+
+ FT_LOCAL_DEF( FT_Error )
+ cff_font_load( FT_Stream stream,
+ FT_Int face_index,
+ CFF_Font font )
+ {
+ 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;
+
+ FT_ZERO( font );
+
+ 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 = CFF_Err_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_new_index( &font->name_index, stream, 0 )) ||
+ FT_SET_ERROR( cff_new_index( &font->font_dict_index, stream, 0 )) ||
+ FT_SET_ERROR( cff_new_index( &font->string_index, stream, 0 )) ||
+ FT_SET_ERROR( cff_new_index( &font->global_subrs_index, stream, 1 )) )
+ goto Exit;
+
+ /* well, we don't really forget the `disabled' fonts... */
+ font->num_faces = font->name_index.count;
+ if ( face_index >= (FT_Int)font->num_faces )
+ {
+ FT_ERROR(( "cff_font_load: incorrect face index = %d\n",
+ face_index ));
+ error = CFF_Err_Invalid_Argument;
+ }
+
+ /* in case of a font format check, simply exit now */
+ if ( face_index < 0 )
+ goto Exit;
+
+ /* now, parse the top-level font dictionary */
+ error = cff_subfont_load( &font->top_font,
+ &font->font_dict_index,
+ face_index,
+ stream,
+ base_offset );
+ if ( error )
+ goto Exit;
+
+ if ( FT_STREAM_SEEK( base_offset + dict->charstrings_offset ) )
+ goto Exit;
+
+ error = cff_new_index( &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;
+ 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_new_index( &fd_index, stream, 0 );
+ if ( error )
+ goto Exit;
+
+ if ( fd_index.count > CFF_MAX_CID_FONTS )
+ {
+ FT_ERROR(( "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;
+
+ /* setup pointer table */
+ for ( idx = 0; idx < fd_index.count; idx++ )
+ font->subfonts[idx] = sub + idx;
+
+ /* now load each sub font independently */
+ for ( idx = 0; idx < fd_index.count; idx++ )
+ {
+ sub = font->subfonts[idx];
+ error = cff_subfont_load( sub, &fd_index, idx,
+ stream, base_offset );
+ 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_done_index( &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 = CFF_Err_Unknown_File_Format;
+ goto Exit;
+ }
+
+ /* explicit the global subrs */
+ font->num_global_subrs = font->global_subrs_index.count;
+ font->num_glyphs = font->charstrings_index.count;
+
+ error = cff_index_get_pointers( &font->global_subrs_index,
+ &font->global_subrs ) ;
+
+ if ( error )
+ goto Exit;
+
+ /* read the Charset and Encoding tables if available */
+ if ( font->num_glyphs > 0 )
+ {
+ FT_Bool invert;
+
+
+ invert = dict->cid_registry != 0xFFFFU &&
+ font->charstrings_index.count != dict->cid_count;
+ 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;
+ }
+ else
+ /* CID-keyed fonts only need CIDs */
+ FT_FREE( font->charset.sids );
+ }
+
+ /* get the font name (/CIDFontName for CID-keyed fonts, */
+ /* /FontName otherwise) */
+ font->font_name = cff_index_get_name( &font->name_index, face_index );
+
+ Exit:
+ return error;
+ }
+
+
+ FT_LOCAL_DEF( void )
+ cff_font_done( CFF_Font font )
+ {
+ FT_Memory memory = font->memory;
+ FT_UInt idx;
+
+
+ cff_done_index( &font->global_subrs_index );
+ cff_done_index( &font->string_index );
+ cff_done_index( &font->font_dict_index );
+ cff_done_index( &font->name_index );
+ cff_done_index( &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] );
+
+ FT_FREE( font->subfonts );
+ }
+
+ 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->global_subrs );
+ FT_FREE( font->font_name );
+ }
+
+
+/* END */
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-12 03:01:53 +0000