/* 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; }
/* check and skip .bz2 header - we don't support `transparent' compression */ static FT_Error ft_bzip2_check_header( FT_Stream stream ) { FT_Error error = FT_Err_Ok; FT_Byte head[4]; if ( FT_STREAM_SEEK( 0 ) || FT_STREAM_READ( head, 4 ) ) goto Exit; /* head[0] && head[1] are the magic numbers; */ /* head[2] is the version, and head[3] the blocksize */ if ( head[0] != 0x42 || head[1] != 0x5a || head[2] != 0x68 ) /* only support bzip2 (huffman) */ { error = FT_THROW( Invalid_File_Format ); goto Exit; } Exit: return error; }
static FT_Error tt_face_get_name(TT_Face face, FT_UShort nameid, FT_String **name) { FT_Memory memory = face->root.memory; FT_Error error = SFNT_Err_Ok; FT_String *result = NULL; FT_UShort n; TT_NameEntryRec *rec; FT_Int found_apple = -1; FT_Int found_apple_roman = -1; FT_Int found_apple_english = -1; FT_Int found_win = -1; FT_Int found_unicode = -1; FT_Bool is_english = 0; TT_NameEntry_ConvertFunc convert; FT_ASSERT(name); rec = face->name_table.names; for (n = 0; n < face->num_names; n++, rec++) { /* According to the OpenType 1.3 specification, only Microsoft or */ /* Apple platform IDs might be used in the `name' table. The */ /* `Unicode' platform is reserved for the `cmap' table, and the */ /* `ISO' one is deprecated. */ /* */ /* However, the Apple TrueType specification doesn't say the same */ /* thing and goes to suggest that all Unicode `name' table entries */ /* should be coded in UTF-16 (in big-endian format I suppose). */ /* */ if (rec->nameID == nameid && rec->stringLength > 0) { switch (rec->platformID) { case TT_PLATFORM_APPLE_UNICODE: case TT_PLATFORM_ISO: /* there is `languageID' to check there. We should use this */ /* field only as a last solution when nothing else is */ /* available. */ /* */ found_unicode = n; break; case TT_PLATFORM_MACINTOSH: /* This is a bit special because some fonts will use either */ /* an English language id, or a Roman encoding id, to indicate */ /* the English version of its font name. */ /* */ if (rec->languageID == TT_MAC_LANGID_ENGLISH) found_apple_english = n; else if (rec->encodingID == TT_MAC_ID_ROMAN) found_apple_roman = n; break; case TT_PLATFORM_MICROSOFT: /* we only take a non-English name when there is nothing */ /* else available in the font */ /* */ if (found_win == -1 || (rec->languageID & 0x3FF) == 0x009) { switch (rec->encodingID) { case TT_MS_ID_SYMBOL_CS: case TT_MS_ID_UNICODE_CS: case TT_MS_ID_UCS_4: is_english = FT_BOOL((rec->languageID & 0x3FF) == 0x009); found_win = n; break; default: ; } } break; default: ; } } } found_apple = found_apple_roman; if (found_apple_english >= 0) found_apple = found_apple_english; /* some fonts contain invalid Unicode or Macintosh formatted entries; */ /* we will thus favor names encoded in Windows formats if available */ /* (provided it is an English name) */ /* */ convert = NULL; if (found_win >= 0 && !(found_apple >= 0 && !is_english)) { rec = face->name_table.names + found_win; switch (rec->encodingID) { /* all Unicode strings are encoded using UTF-16BE */ case TT_MS_ID_UNICODE_CS: case TT_MS_ID_SYMBOL_CS: convert = tt_name_entry_ascii_from_utf16; break; case TT_MS_ID_UCS_4: /* Apparently, if this value is found in a name table entry, it is */ /* documented as `full Unicode repertoire'. Experience with the */ /* MsGothic font shipped with Windows Vista shows that this really */ /* means UTF-16 encoded names (UCS-4 values are only used within */ /* charmaps). */ convert = tt_name_entry_ascii_from_utf16; break; default: ; } } else if (found_apple >= 0) { rec = face->name_table.names + found_apple; convert = tt_name_entry_ascii_from_other; } else if (found_unicode >= 0) { rec = face->name_table.names + found_unicode; convert = tt_name_entry_ascii_from_utf16; } if (rec && convert) { if (rec->string == NULL) { FT_Stream stream = face->name_table.stream; if (FT_QNEW_ARRAY (rec->string, rec->stringLength) || FT_STREAM_SEEK(rec->stringOffset) || FT_STREAM_READ(rec->string, rec->stringLength)) { FT_FREE(rec->string); rec->stringLength = 0; result = NULL; goto Exit; } } result = convert(rec, memory); } Exit: *name = result; return error; }
static FT_Error load_format_25( TT_Face face, FT_Stream stream, FT_ULong post_limit ) { FT_Memory memory = stream->memory; FT_Error error; FT_Int num_glyphs; FT_Char* offset_table = NULL; FT_UNUSED( post_limit ); /* UNDOCUMENTED! This value appears only in the Apple TT specs. */ if ( FT_READ_USHORT( num_glyphs ) ) goto Exit; /* check the number of glyphs */ if ( num_glyphs > face->max_profile.numGlyphs || num_glyphs > 258 ) { error = FT_THROW( Invalid_File_Format ); goto Exit; } if ( FT_NEW_ARRAY( offset_table, num_glyphs ) || FT_STREAM_READ( offset_table, num_glyphs ) ) goto Fail; /* now check the offset table */ { FT_Int n; for ( n = 0; n < num_glyphs; n++ ) { FT_Long idx = (FT_Long)n + offset_table[n]; if ( idx < 0 || idx > num_glyphs ) { error = FT_THROW( Invalid_File_Format ); goto Fail; } } } /* OK, set table fields and exit successfully */ { TT_Post_25 table = &face->postscript_names.names.format_25; table->num_glyphs = (FT_UShort)num_glyphs; table->offsets = offset_table; } return FT_Err_Ok; Fail: FT_FREE( offset_table ); Exit: return error; }
static FT_Error load_format_20( TT_Face face, FT_Stream stream, FT_ULong post_limit ) { FT_Memory memory = stream->memory; FT_Error error; FT_Int num_glyphs; FT_UShort num_names; FT_UShort* glyph_indices = NULL; FT_Char** name_strings = NULL; if ( FT_READ_USHORT( num_glyphs ) ) goto Exit; /* UNDOCUMENTED! The number of glyphs in this table can be smaller */ /* than the value in the maxp table (cf. cyberbit.ttf). */ /* There already exist fonts which have more than 32768 glyph names */ /* in this table, so the test for this threshold has been dropped. */ if ( num_glyphs > face->max_profile.numGlyphs ) { error = FT_THROW( Invalid_File_Format ); goto Exit; } /* load the indices */ { FT_Int n; if ( FT_NEW_ARRAY ( glyph_indices, num_glyphs ) || FT_FRAME_ENTER( num_glyphs * 2L ) ) goto Fail; for ( n = 0; n < num_glyphs; n++ ) glyph_indices[n] = FT_GET_USHORT(); FT_FRAME_EXIT(); } /* compute number of names stored in table */ { FT_Int n; num_names = 0; for ( n = 0; n < num_glyphs; n++ ) { FT_Int idx; idx = glyph_indices[n]; if ( idx >= 258 ) { idx -= 257; if ( idx > num_names ) num_names = (FT_UShort)idx; } } } /* now load the name strings */ { FT_UShort n; if ( FT_NEW_ARRAY( name_strings, num_names ) ) goto Fail; for ( n = 0; n < num_names; n++ ) { FT_UInt len; if ( FT_STREAM_POS() >= post_limit ) break; else { FT_TRACE6(( "load_format_20: %d byte left in post table\n", post_limit - FT_STREAM_POS() )); if ( FT_READ_BYTE( len ) ) goto Fail1; } if ( len > post_limit || FT_STREAM_POS() > post_limit - len ) { FT_Int d = (FT_Int)post_limit - (FT_Int)FT_STREAM_POS(); FT_ERROR(( "load_format_20:" " exceeding string length (%d)," " truncating at end of post table (%d byte left)\n", len, d )); len = (FT_UInt)FT_MAX( 0, d ); } if ( FT_NEW_ARRAY( name_strings[n], len + 1 ) || FT_STREAM_READ( name_strings[n], len ) ) goto Fail1; name_strings[n][len] = '\0'; } if ( n < num_names ) { FT_ERROR(( "load_format_20:" " all entries in post table are already parsed," " using NULL names for gid %d - %d\n", n, num_names - 1 )); for ( ; n < num_names; n++ ) if ( FT_NEW_ARRAY( name_strings[n], 1 ) ) goto Fail1; else name_strings[n][0] = '\0'; } } /* all right, set table fields and exit successfully */ { TT_Post_20 table = &face->postscript_names.names.format_20; table->num_glyphs = (FT_UShort)num_glyphs; table->num_names = (FT_UShort)num_names; table->glyph_indices = glyph_indices; table->glyph_names = name_strings; } return FT_Err_Ok; Fail1: { FT_UShort n; for ( n = 0; n < num_names; n++ ) FT_FREE( name_strings[n] ); } Fail: FT_FREE( name_strings ); FT_FREE( glyph_indices ); Exit: return error; }
static FT_String* tt_face_get_name( TT_Face face, FT_UShort nameid ) { FT_Memory memory = face->root.memory; FT_String* result = NULL; FT_UShort n; TT_NameEntryRec* rec; FT_Int found_apple = -1; FT_Int found_win = -1; FT_Int found_unicode = -1; FT_Bool is_english = 0; TT_NameEntry_ConvertFunc convert; rec = face->name_table.names; for ( n = 0; n < face->num_names; n++, rec++ ) { /* According to the OpenType 1.3 specification, only Microsoft or */ /* Apple platform IDs might be used in the `name' table. The */ /* `Unicode' platform is reserved for the `cmap' table, and the */ /* `Iso' one is deprecated. */ /* */ /* However, the Apple TrueType specification doesn't say the same */ /* thing and goes to suggest that all Unicode `name' table entries */ /* should be coded in UTF-16 (in big-endian format I suppose). */ /* */ if ( rec->nameID == nameid && rec->stringLength > 0 ) { switch ( rec->platformID ) { case TT_PLATFORM_APPLE_UNICODE: case TT_PLATFORM_ISO: /* there is `languageID' to check there. We should use this */ /* field only as a last solution when nothing else is */ /* available. */ /* */ found_unicode = n; break; case TT_PLATFORM_MACINTOSH: if ( rec->languageID == TT_MAC_LANGID_ENGLISH ) found_apple = n; break; case TT_PLATFORM_MICROSOFT: /* we only take a non-English name when there is nothing */ /* else available in the font */ /* */ if ( found_win == -1 || ( rec->languageID & 0x3FF ) == 0x009 ) { switch ( rec->encodingID ) { case TT_MS_ID_SYMBOL_CS: case TT_MS_ID_UNICODE_CS: case TT_MS_ID_UCS_4: is_english = FT_BOOL( ( rec->languageID & 0x3FF ) == 0x009 ); found_win = n; break; default: ; } } break; default: ; } } } /* some fonts contain invalid Unicode or Macintosh formatted entries; */ /* we will thus favor names encoded in Windows formats if available */ /* (provided it is an English name) */ /* */ convert = NULL; if ( found_win >= 0 && !( found_apple >= 0 && !is_english ) ) { rec = face->name_table.names + found_win; switch ( rec->encodingID ) { case TT_MS_ID_UNICODE_CS: case TT_MS_ID_SYMBOL_CS: convert = tt_name_entry_ascii_from_utf16; break; case TT_MS_ID_UCS_4: convert = tt_name_entry_ascii_from_ucs4; break; default: ; } } else if ( found_apple >= 0 ) { rec = face->name_table.names + found_apple; convert = tt_name_entry_ascii_from_other; } else if ( found_unicode >= 0 ) { rec = face->name_table.names + found_unicode; convert = tt_name_entry_ascii_from_utf16; } if ( rec && convert ) { if ( rec->string == NULL ) { FT_Error error = SFNT_Err_Ok; FT_Stream stream = face->name_table.stream; FT_UNUSED( error ); if ( FT_QNEW_ARRAY ( rec->string, rec->stringLength ) || FT_STREAM_SEEK( rec->stringOffset ) || FT_STREAM_READ( rec->string, rec->stringLength ) ) { FT_FREE( rec->string ); rec->stringLength = 0; result = NULL; goto Exit; } } result = convert( rec, memory ); } Exit: return result; }
t42_parser_init( T42_Parser parser, FT_Stream stream, FT_Memory memory, PSAux_Service psaux ) { FT_Error error = FT_Err_Ok; FT_Long size; psaux->ps_parser_funcs->init( &parser->root, 0, 0, memory ); parser->stream = stream; parser->base_len = 0; parser->base_dict = 0; parser->in_memory = 0; /*******************************************************************/ /* */ /* Here a short summary of what is going on: */ /* */ /* When creating a new Type 42 parser, we try to locate and load */ /* the base dictionary, loading the whole font into memory. */ /* */ /* When `loading' the base dictionary, we only set up pointers */ /* in the case of a memory-based stream. Otherwise, we allocate */ /* and load the base dictionary in it. */ /* */ /* parser->in_memory is set if we have a memory stream. */ /* */ if ( FT_STREAM_SEEK( 0L ) || FT_FRAME_ENTER( 17 ) ) goto Exit; if ( ft_memcmp( stream->cursor, "%!PS-TrueTypeFont", 17 ) != 0 ) { FT_TRACE2(( " not a Type42 font\n" )); error = FT_THROW( Unknown_File_Format ); } FT_FRAME_EXIT(); if ( error || FT_STREAM_SEEK( 0 ) ) goto Exit; size = stream->size; /* now, try to load `size' bytes of the `base' dictionary we */ /* found previously */ /* if it is a memory-based resource, set up pointers */ if ( !stream->read ) { parser->base_dict = (FT_Byte*)stream->base + stream->pos; parser->base_len = size; parser->in_memory = 1; /* check that the `size' field is valid */ if ( FT_STREAM_SKIP( size ) ) goto Exit; } else { /* read segment in memory */ if ( FT_ALLOC( parser->base_dict, size ) || FT_STREAM_READ( parser->base_dict, size ) ) goto Exit; parser->base_len = size; } parser->root.base = parser->base_dict; parser->root.cursor = parser->base_dict; parser->root.limit = parser->root.cursor + parser->base_len; Exit: if ( error && !parser->in_memory ) FT_FREE( parser->base_dict ); return error; }
cid_parser_new( CID_Parser* parser, FT_Stream stream, FT_Memory memory, PSAux_Service psaux ) { FT_Error error; FT_ULong base_offset, offset, ps_len; FT_Byte *cur, *limit; FT_Byte *arg1, *arg2; FT_ZERO( parser ); psaux->ps_parser_funcs->init( &parser->root, 0, 0, memory ); parser->stream = stream; base_offset = FT_STREAM_POS(); /* first of all, check the font format in the header */ if ( FT_FRAME_ENTER( 31 ) ) goto Exit; if ( ft_strncmp( (char *)stream->cursor, "%!PS-Adobe-3.0 Resource-CIDFont", 31 ) ) { FT_TRACE2(( " not a CID-keyed font\n" )); error = FT_THROW( Unknown_File_Format ); } FT_FRAME_EXIT(); if ( error ) goto Exit; Again: /* now, read the rest of the file until we find */ /* `StartData' or `/sfnts' */ { /* * The algorithm is as follows (omitting the case with less than 256 * bytes to fill for simplicity). * * 1. Fill the buffer with 256 + STARTDATA_LEN bytes. * * 2. Search for the STARTDATA and SFNTS strings at positions * buffer[0], buffer[1], ..., * buffer[255 + STARTDATA_LEN - SFNTS_LEN]. * * 3. Move the last STARTDATA_LEN bytes to buffer[0]. * * 4. Fill the buffer with 256 bytes, starting at STARTDATA_LEN. * * 5. Repeat with step 2. * */ FT_Byte buffer[256 + STARTDATA_LEN + 1]; /* values for the first loop */ FT_ULong read_len = 256 + STARTDATA_LEN; FT_ULong read_offset = 0; FT_Byte* p = buffer; for ( offset = FT_STREAM_POS(); ; offset += 256 ) { FT_ULong stream_len; stream_len = stream->size - FT_STREAM_POS(); read_len = FT_MIN( read_len, stream_len ); if ( FT_STREAM_READ( p, read_len ) ) goto Exit; /* ensure that we do not compare with data beyond the buffer */ p[read_len] = '\0'; limit = p + read_len - SFNTS_LEN; for ( p = buffer; p < limit; p++ ) { if ( p[0] == 'S' && ft_strncmp( (char*)p, STARTDATA, STARTDATA_LEN ) == 0 ) { /* save offset of binary data after `StartData' */ offset += (FT_ULong)( p - buffer ) + STARTDATA_LEN + 1; goto Found; } else if ( p[1] == 's' && ft_strncmp( (char*)p, SFNTS, SFNTS_LEN ) == 0 ) { offset += (FT_ULong)( p - buffer ) + SFNTS_LEN + 1; goto Found; } } if ( read_offset + read_len < STARTDATA_LEN ) { FT_TRACE2(( "cid_parser_new: no `StartData' keyword found\n" )); error = FT_THROW( Invalid_File_Format ); goto Exit; } FT_MEM_MOVE( buffer, buffer + read_offset + read_len - STARTDATA_LEN, STARTDATA_LEN ); /* values for the next loop */ read_len = 256; read_offset = STARTDATA_LEN; p = buffer + read_offset; } } Found: /* We have found the start of the binary data or the `/sfnts' token. */ /* Now rewind and extract the frame corresponding to this PostScript */ /* section. */ ps_len = offset - base_offset; if ( FT_STREAM_SEEK( base_offset ) || FT_FRAME_EXTRACT( ps_len, parser->postscript ) ) goto Exit; parser->data_offset = offset; parser->postscript_len = ps_len; parser->root.base = parser->postscript; parser->root.cursor = parser->postscript; parser->root.limit = parser->root.cursor + ps_len; parser->num_dict = -1; /* Finally, we check whether `StartData' or `/sfnts' was real -- */ /* it could be in a comment or string. We also get the arguments */ /* of `StartData' to find out whether the data is represented in */ /* binary or hex format. */ arg1 = parser->root.cursor; cid_parser_skip_PS_token( parser ); cid_parser_skip_spaces ( parser ); arg2 = parser->root.cursor; cid_parser_skip_PS_token( parser ); cid_parser_skip_spaces ( parser ); limit = parser->root.limit; cur = parser->root.cursor; while ( cur <= limit - SFNTS_LEN ) { if ( parser->root.error ) { error = parser->root.error; goto Exit; } if ( cur[0] == 'S' && cur <= limit - STARTDATA_LEN && ft_strncmp( (char*)cur, STARTDATA, STARTDATA_LEN ) == 0 ) { if ( ft_strncmp( (char*)arg1, "(Hex)", 5 ) == 0 ) { FT_Long tmp = ft_strtol( (const char *)arg2, NULL, 10 ); if ( tmp < 0 ) { FT_ERROR(( "cid_parser_new: invalid length of hex data\n" )); error = FT_THROW( Invalid_File_Format ); } else parser->binary_length = (FT_ULong)tmp; } goto Exit; } else if ( cur[1] == 's' && ft_strncmp( (char*)cur, SFNTS, SFNTS_LEN ) == 0 ) { FT_TRACE2(( "cid_parser_new: cannot handle Type 11 fonts\n" )); error = FT_THROW( Unknown_File_Format ); goto Exit; } cid_parser_skip_PS_token( parser ); cid_parser_skip_spaces ( parser ); arg1 = arg2; arg2 = cur; cur = parser->root.cursor; } /* we haven't found the correct `StartData'; go back and continue */ /* searching */ FT_FRAME_RELEASE( parser->postscript ); if ( !FT_STREAM_SEEK( offset ) ) goto Again; Exit: return error; }
T1_Get_Private_Dict( T1_Parser parser, PSAux_Service psaux ) { FT_Stream stream = parser->stream; FT_Memory memory = parser->root.memory; FT_Error error = FT_Err_Ok; FT_ULong size; if ( parser->in_pfb ) { /* in the case of the PFB format, the private dictionary can be */ /* made of several segments. We thus first read the number of */ /* segments to compute the total size of the private dictionary */ /* then re-read them into memory. */ FT_Long start_pos = FT_STREAM_POS(); FT_UShort tag; parser->private_len = 0; for (;;) { error = read_pfb_tag( stream, &tag, &size ); if ( error ) goto Fail; if ( tag != 0x8002U ) break; parser->private_len += size; if ( FT_STREAM_SKIP( size ) ) goto Fail; } /* Check that we have a private dictionary there */ /* and allocate private dictionary buffer */ if ( parser->private_len == 0 ) { FT_ERROR(( "T1_Get_Private_Dict:" " invalid private dictionary section\n" )); error = FT_THROW( Invalid_File_Format ); goto Fail; } if ( FT_STREAM_SEEK( start_pos ) || FT_ALLOC( parser->private_dict, parser->private_len ) ) goto Fail; parser->private_len = 0; for (;;) { error = read_pfb_tag( stream, &tag, &size ); if ( error || tag != 0x8002U ) { error = FT_Err_Ok; break; } if ( FT_STREAM_READ( parser->private_dict + parser->private_len, size ) ) goto Fail; parser->private_len += size; } } else { /* We have already `loaded' the whole PFA font file into memory; */ /* if this is a memory resource, allocate a new block to hold */ /* the private dict. Otherwise, simply overwrite into the base */ /* dictionary block in the heap. */ /* first of all, look at the `eexec' keyword */ FT_Byte* cur = parser->base_dict; FT_Byte* limit = cur + parser->base_len; FT_Byte c; Again: for (;;) { c = cur[0]; if ( c == 'e' && cur + 9 < limit ) /* 9 = 5 letters for `eexec' + */ /* whitespace + 4 chars */ { if ( cur[1] == 'e' && cur[2] == 'x' && cur[3] == 'e' && cur[4] == 'c' ) break; } cur++; if ( cur >= limit ) { FT_ERROR(( "T1_Get_Private_Dict:" " could not find `eexec' keyword\n" )); error = FT_THROW( Invalid_File_Format ); goto Exit; } } /* check whether `eexec' was real -- it could be in a comment */ /* or string (as e.g. in u003043t.gsf from ghostscript) */ parser->root.cursor = parser->base_dict; /* set limit to `eexec' + whitespace + 4 characters */ parser->root.limit = cur + 10; cur = parser->root.cursor; limit = parser->root.limit; while ( cur < limit ) { if ( *cur == 'e' && ft_strncmp( (char*)cur, "eexec", 5 ) == 0 ) goto Found; T1_Skip_PS_Token( parser ); if ( parser->root.error ) break; T1_Skip_Spaces ( parser ); cur = parser->root.cursor; } /* we haven't found the correct `eexec'; go back and continue */ /* searching */ cur = limit; limit = parser->base_dict + parser->base_len; goto Again; /* now determine where to write the _encrypted_ binary private */ /* dictionary. We overwrite the base dictionary for disk-based */ /* resources and allocate a new block otherwise */ Found: parser->root.limit = parser->base_dict + parser->base_len; T1_Skip_PS_Token( parser ); cur = parser->root.cursor; limit = parser->root.limit; /* according to the Type1 spec, the first cipher byte must not be */ /* an ASCII whitespace character code (blank, tab, carriage return */ /* or line feed). We have seen Type 1 fonts with two line feed */ /* characters... So skip now all whitespace character codes. */ /* SumatraPDF: stop at \r if it's not used for EOL - cf. https://code.google.com/p/sumatrapdf/issues/detail?id=2408 */ c = !memchr(cur, '\n', limit - cur) || memchr(cur, '\n', limit - cur) > memchr(cur, '\r', limit - cur); while ( cur < limit && ( *cur == ' ' || *cur == '\t' || ( c && *cur == '\r' ) || *cur == '\n' ) ) ++cur; if ( cur >= limit ) { FT_ERROR(( "T1_Get_Private_Dict:" " `eexec' not properly terminated\n" )); error = FT_THROW( Invalid_File_Format ); goto Exit; } size = (FT_ULong)( parser->base_len - ( cur - parser->base_dict ) ); if ( parser->in_memory ) { /* note that we allocate one more byte to put a terminating `0' */ if ( FT_ALLOC( parser->private_dict, size + 1 ) ) goto Fail; parser->private_len = size; } else { parser->single_block = 1; parser->private_dict = parser->base_dict; parser->private_len = size; parser->base_dict = 0; parser->base_len = 0; } /* now determine whether the private dictionary is encoded in binary */ /* or hexadecimal ASCII format -- decode it accordingly */ /* we need to access the next 4 bytes (after the final whitespace */ /* following the `eexec' keyword); if they all are hexadecimal */ /* digits, then we have a case of ASCII storage */ if ( cur + 3 < limit && ft_isxdigit( cur[0] ) && ft_isxdigit( cur[1] ) && ft_isxdigit( cur[2] ) && ft_isxdigit( cur[3] ) ) { /* ASCII hexadecimal encoding */ FT_Long len; parser->root.cursor = cur; (void)psaux->ps_parser_funcs->to_bytes( &parser->root, parser->private_dict, parser->private_len, &len, 0 ); parser->private_len = len; /* put a safeguard */ parser->private_dict[len] = '\0'; } else /* binary encoding -- copy the private dict */ FT_MEM_MOVE( parser->private_dict, cur, size ); } /* we now decrypt the encoded binary private dictionary */ psaux->t1_decrypt( parser->private_dict, parser->private_len, 55665U ); if ( parser->private_len < 4 ) { FT_ERROR(( "T1_Get_Private_Dict:" " invalid private dictionary section\n" )); error = FT_THROW( Invalid_File_Format ); goto Fail; } /* replace the four random bytes at the beginning with whitespace */ parser->private_dict[0] = ' '; parser->private_dict[1] = ' '; parser->private_dict[2] = ' '; parser->private_dict[3] = ' '; parser->root.base = parser->private_dict; parser->root.cursor = parser->private_dict; parser->root.limit = parser->root.cursor + parser->private_len; Fail: Exit: return error; }
cid_parser_new( CID_Parser* parser, FT_Stream stream, FT_Memory memory, PSAux_Service psaux ) { FT_Error error; FT_ULong base_offset, offset, ps_len; FT_Byte buffer[256 + 10]; FT_Int buff_len; FT_Byte *cur, *limit; FT_Byte *arg1, *arg2; FT_MEM_ZERO( parser, sizeof ( *parser ) ); psaux->ps_parser_funcs->init( &parser->root, 0, 0, memory ); parser->stream = stream; base_offset = FT_STREAM_POS(); /* first of all, check the font format in the header */ if ( FT_FRAME_ENTER( 31 ) ) goto Exit; if ( ft_strncmp( (char *)stream->cursor, "%!PS-Adobe-3.0 Resource-CIDFont", 31 ) ) { FT_TRACE2(( "[not a valid CID-keyed font]\n" )); error = CID_Err_Unknown_File_Format; } FT_FRAME_EXIT(); if ( error ) goto Exit; Again: /* now, read the rest of the file until we find a `StartData' */ buff_len = 256; for (;;) { FT_Byte* p; FT_ULong top_position; /* fill input buffer */ limit = buffer + 256; buff_len -= 256; if ( buff_len > 0 ) FT_MEM_MOVE( buffer, limit, buff_len ); p = buffer + buff_len; if ( FT_STREAM_READ( p, 256 + 10 - buff_len ) ) goto Exit; top_position = FT_STREAM_POS() - buff_len; buff_len = 256 + 10; /* look for `StartData' */ for ( p = buffer; p < limit; p++ ) { if ( p[0] == 'S' && ft_strncmp( (char*)p, "StartData", 9 ) == 0 ) { /* save offset of binary data after `StartData' */ offset = (FT_ULong)( top_position - ( limit - p ) + 10 ); goto Found; } } } Found: /* we have found the start of the binary data. We will now */ /* rewind and extract the frame corresponding to the PostScript */ /* section */ ps_len = offset - base_offset; if ( FT_STREAM_SEEK( base_offset ) || FT_FRAME_EXTRACT( ps_len, parser->postscript ) ) goto Exit; parser->data_offset = offset; parser->postscript_len = ps_len; parser->root.base = parser->postscript; parser->root.cursor = parser->postscript; parser->root.limit = parser->root.cursor + ps_len; parser->num_dict = -1; /* Finally, we check whether `StartData' was real -- it could be */ /* in a comment or string. We also get its arguments to find out */ /* whether the data is represented in binary or hex format. */ arg1 = parser->root.cursor; cid_parser_skip_PS_token( parser ); cid_parser_skip_spaces ( parser ); arg2 = parser->root.cursor; cid_parser_skip_PS_token( parser ); cid_parser_skip_spaces ( parser ); limit = parser->root.limit; cur = parser->root.cursor; while ( cur < limit ) { if ( parser->root.error ) break; if ( *cur == 'S' && ft_strncmp( (char*)cur, "StartData", 9 ) == 0 ) { if ( ft_strncmp( (char*)arg1, "(Hex)", 5 ) == 0 ) parser->binary_length = ft_atol( (const char *)arg2 ); limit = parser->root.limit; cur = parser->root.cursor; goto Exit; } cid_parser_skip_PS_token( parser ); cid_parser_skip_spaces ( parser ); arg1 = arg2; arg2 = cur; cur = parser->root.cursor; } /* we haven't found the correct `StartData'; go back and continue */ /* searching */ FT_FRAME_RELEASE( parser->postscript ); if ( !FT_STREAM_SEEK( offset ) ) goto Again; Exit: return error; }
cid_parser_new( CID_Parser* parser, FT_Stream stream, FT_Memory memory, PSAux_Service psaux ) { FT_Error error; FT_ULong base_offset, offset, ps_len; FT_Byte *cur, *limit; FT_Byte *arg1, *arg2; FT_MEM_ZERO( parser, sizeof ( *parser ) ); psaux->ps_parser_funcs->init( &parser->root, 0, 0, memory ); parser->stream = stream; base_offset = FT_STREAM_POS(); /* first of all, check the font format in the header */ if ( FT_FRAME_ENTER( 31 ) ) goto Exit; if ( ft_strncmp( (char *)stream->cursor, "%!PS-Adobe-3.0 Resource-CIDFont", 31 ) ) { FT_TRACE2(( " not a CID-keyed font\n" )); error = FT_THROW( Unknown_File_Format ); } FT_FRAME_EXIT(); if ( error ) goto Exit; Again: /* now, read the rest of the file until we find */ /* `StartData' or `/sfnts' */ { FT_Byte buffer[256 + 10]; FT_ULong read_len = 256 + 10; FT_Byte* p = buffer; for ( offset = FT_STREAM_POS(); ; offset += 256 ) { FT_ULong stream_len; stream_len = stream->size - FT_STREAM_POS(); if ( stream_len == 0 ) { FT_TRACE2(( "cid_parser_new: no `StartData' keyword found\n" )); error = FT_THROW( Invalid_File_Format ); goto Exit; } read_len = FT_MIN( read_len, stream_len ); if ( FT_STREAM_READ( p, read_len ) ) goto Exit; if ( read_len < 256 ) p[read_len] = '\0'; limit = p + read_len - 10; for ( p = buffer; p < limit; p++ ) { if ( p[0] == 'S' && ft_strncmp( (char*)p, "StartData", 9 ) == 0 ) { /* save offset of binary data after `StartData' */ offset += (FT_ULong)( p - buffer + 10 ); goto Found; } else if ( p[1] == 's' && ft_strncmp( (char*)p, "/sfnts", 6 ) == 0 ) { offset += (FT_ULong)( p - buffer + 7 ); goto Found; } } FT_MEM_MOVE( buffer, p, 10 ); read_len = 256; p = buffer + 10; } } Found: /* We have found the start of the binary data or the `/sfnts' token. */ /* Now rewind and extract the frame corresponding to this PostScript */ /* section. */ ps_len = offset - base_offset; if ( FT_STREAM_SEEK( base_offset ) || FT_FRAME_EXTRACT( ps_len, parser->postscript ) ) goto Exit; parser->data_offset = offset; parser->postscript_len = ps_len; parser->root.base = parser->postscript; parser->root.cursor = parser->postscript; parser->root.limit = parser->root.cursor + ps_len; parser->num_dict = -1; /* Finally, we check whether `StartData' or `/sfnts' was real -- */ /* it could be in a comment or string. We also get the arguments */ /* of `StartData' to find out whether the data is represented in */ /* binary or hex format. */ arg1 = parser->root.cursor; cid_parser_skip_PS_token( parser ); cid_parser_skip_spaces ( parser ); arg2 = parser->root.cursor; cid_parser_skip_PS_token( parser ); cid_parser_skip_spaces ( parser ); limit = parser->root.limit; cur = parser->root.cursor; while ( cur < limit ) { if ( parser->root.error ) { error = parser->root.error; goto Exit; } if ( cur[0] == 'S' && ft_strncmp( (char*)cur, "StartData", 9 ) == 0 ) { if ( ft_strncmp( (char*)arg1, "(Hex)", 5 ) == 0 ) { FT_Long tmp = ft_atol( (const char *)arg2 ); if ( tmp < 0 ) { FT_ERROR(( "cid_parser_new: invalid length of hex data\n" )); error = FT_THROW( Invalid_File_Format ); } else parser->binary_length = (FT_ULong)tmp; } goto Exit; } else if ( cur[1] == 's' && ft_strncmp( (char*)cur, "/sfnts", 6 ) == 0 ) { FT_TRACE2(( "cid_parser_new: cannot handle Type 11 fonts\n" )); error = FT_THROW( Unknown_File_Format ); goto Exit; } cid_parser_skip_PS_token( parser ); cid_parser_skip_spaces ( parser ); arg1 = arg2; arg2 = cur; cur = parser->root.cursor; } /* we haven't found the correct `StartData'; go back and continue */ /* searching */ FT_FRAME_RELEASE( parser->postscript ); if ( !FT_STREAM_SEEK( offset ) ) goto Again; Exit: return error; }
static FT_Error load_format_20( TT_Face face, FT_Stream stream ) { FT_Memory memory = stream->memory; FT_Error error; FT_Int num_glyphs; FT_UShort num_names; FT_UShort* glyph_indices = 0; FT_Char** name_strings = 0; if ( FT_READ_USHORT( num_glyphs ) ) goto Exit; /* UNDOCUMENTED! The number of glyphs in this table can be smaller */ /* than the value in the maxp table (cf. cyberbit.ttf). */ /* There already exist fonts which have more than 32768 glyph names */ /* in this table, so the test for this threshold has been dropped. */ if ( num_glyphs > face->root.num_glyphs ) { error = SFNT_Err_Invalid_File_Format; goto Exit; } /* load the indices */ { FT_Int n; if ( FT_NEW_ARRAY ( glyph_indices, num_glyphs ) || FT_FRAME_ENTER( num_glyphs * 2L ) ) goto Fail; for ( n = 0; n < num_glyphs; n++ ) glyph_indices[n] = FT_GET_USHORT(); FT_FRAME_EXIT(); } /* compute number of names stored in table */ { FT_Int n; num_names = 0; for ( n = 0; n < num_glyphs; n++ ) { FT_Int idx; idx = glyph_indices[n]; if ( idx >= 258 ) { idx -= 257; if ( idx > num_names ) num_names = (FT_UShort)idx; } } } /* now load the name strings */ { FT_UShort n; if ( FT_NEW_ARRAY( name_strings, num_names ) ) goto Fail; for ( n = 0; n < num_names; n++ ) { FT_UInt len; if ( FT_READ_BYTE ( len ) || FT_NEW_ARRAY( name_strings[n], len + 1 ) || FT_STREAM_READ ( name_strings[n], len ) ) goto Fail1; name_strings[n][len] = '\0'; } } /* all right, set table fields and exit successfuly */ { TT_Post_20 table = &face->postscript_names.names.format_20; table->num_glyphs = (FT_UShort)num_glyphs; table->num_names = (FT_UShort)num_names; table->glyph_indices = glyph_indices; table->glyph_names = name_strings; } return SFNT_Err_Ok; Fail1: { FT_UShort n; for ( n = 0; n < num_names; n++ ) FT_FREE( name_strings[n] ); } Fail: FT_FREE( name_strings ); FT_FREE( glyph_indices ); Exit: return error; }
T1_Get_Private_Dict( T1_Parser parser, PSAux_Service psaux ) { FT_Stream stream = parser->stream; FT_Memory memory = parser->root.memory; FT_Error error = 0; FT_Long size; if ( parser->in_pfb ) { /* in the case of the PFB format, the private dictionary can be */ /* made of several segments. We thus first read the number of */ /* segments to compute the total size of the private dictionary */ /* then re-read them into memory. */ FT_Long start_pos = FT_STREAM_POS(); FT_UShort tag; parser->private_len = 0; for (;;) { error = read_pfb_tag( stream, &tag, &size ); if ( error ) goto Fail; if ( tag != 0x8002U ) break; parser->private_len += size; if ( FT_STREAM_SKIP( size ) ) goto Fail; } /* Check that we have a private dictionary there */ /* and allocate private dictionary buffer */ if ( parser->private_len == 0 ) { FT_ERROR(( "T1_Get_Private_Dict:" )); FT_ERROR(( " invalid private dictionary section\n" )); error = T1_Err_Invalid_File_Format; goto Fail; } if ( FT_STREAM_SEEK( start_pos ) || FT_ALLOC( parser->private_dict, parser->private_len ) ) goto Fail; parser->private_len = 0; for (;;) { error = read_pfb_tag( stream, &tag, &size ); if ( error || tag != 0x8002U ) { error = T1_Err_Ok; break; } if ( FT_STREAM_READ( parser->private_dict + parser->private_len, size ) ) goto Fail; parser->private_len += size; } } else { /* we have already `loaded' the whole PFA font file into memory; */ /* if this is a memory resource, allocate a new block to hold */ /* the private dict. Otherwise, simply overwrite into the base */ /* dictionary block in the heap. */ /* first of all, look at the `eexec' keyword */ FT_Byte* cur = parser->base_dict; FT_Byte* limit = cur + parser->base_len; FT_Byte c; for (;;) { c = cur[0]; if ( c == 'e' && cur + 9 < limit ) /* 9 = 5 letters for `eexec' + */ /* newline + 4 chars */ { if ( cur[1] == 'e' && cur[2] == 'x' && cur[3] == 'e' && cur[4] == 'c' ) { cur += 6; /* we skip the newling after the `eexec' */ /* XXX: Some fonts use DOS-linefeeds, i.e. \r\n; we need to */ /* skip the extra \n if we find it */ if ( cur[0] == '\n' ) cur++; break; } } cur++; if ( cur >= limit ) { FT_ERROR(( "T1_Get_Private_Dict:" )); FT_ERROR(( " could not find `eexec' keyword\n" )); error = T1_Err_Invalid_File_Format; goto Exit; } } /* now determine where to write the _encrypted_ binary private */ /* dictionary. We overwrite the base dictionary for disk-based */ /* resources and allocate a new block otherwise */ size = (FT_Long)( parser->base_len - ( cur - parser->base_dict ) ); if ( parser->in_memory ) { /* note that we allocate one more byte to put a terminating `0' */ if ( FT_ALLOC( parser->private_dict, size + 1 ) ) goto Fail; parser->private_len = size; } else { parser->single_block = 1; parser->private_dict = parser->base_dict; parser->private_len = size; parser->base_dict = 0; parser->base_len = 0; } /* now determine whether the private dictionary is encoded in binary */ /* or hexadecimal ASCII format -- decode it accordingly */ /* we need to access the next 4 bytes (after the final \r following */ /* the `eexec' keyword); if they all are hexadecimal digits, then */ /* we have a case of ASCII storage */ if ( ( hexa_value( cur[0] ) | hexa_value( cur[1] ) | hexa_value( cur[2] ) | hexa_value( cur[3] ) ) < 0 ) /* binary encoding -- `simply' copy the private dict */ FT_MEM_COPY( parser->private_dict, cur, size ); else { /* ASCII hexadecimal encoding */ FT_Byte* write; FT_Int count; write = parser->private_dict; count = 0; for ( ;cur < limit; cur++ ) { int hex1; /* check for newline */ if ( cur[0] == '\r' || cur[0] == '\n' ) continue; /* exit if we have a non-hexadecimal digit that isn't a newline */ hex1 = hexa_value( cur[0] ); if ( hex1 < 0 || cur + 1 >= limit ) break; /* otherwise, store byte */ *write++ = (FT_Byte)( ( hex1 << 4 ) | hexa_value( cur[1] ) ); count++; cur++; } /* put a safeguard */ parser->private_len = write - parser->private_dict; *write++ = 0; } } /* we now decrypt the encoded binary private dictionary */ psaux->t1_decrypt( parser->private_dict, parser->private_len, 55665U ); parser->root.base = parser->private_dict; parser->root.cursor = parser->private_dict; parser->root.limit = parser->root.cursor + parser->private_len; Fail: Exit: return error; }
/* check and skip .gz header - we don't support `transparent' compression */ static FT_Error ft_gzip_check_header( FT_Stream stream ) { FT_Error error; FT_Byte head[4]; if ( FT_STREAM_SEEK( 0 ) || FT_STREAM_READ( head, 4 ) ) goto Exit; /* head[0] && head[1] are the magic numbers; */ /* head[2] is the method, and head[3] the flags */ if ( head[0] != 0x1f || head[1] != 0x8b || head[2] != Z_DEFLATED || (head[3] & FT_GZIP_RESERVED) ) { error = Gzip_Err_Invalid_File_Format; goto Exit; } /* skip time, xflags and os code */ (void)FT_STREAM_SKIP( 6 ); /* skip the extra field */ if ( head[3] & FT_GZIP_EXTRA_FIELD ) { FT_UInt len; if ( FT_READ_USHORT_LE( len ) || FT_STREAM_SKIP( len ) ) goto Exit; } /* skip original file name */ if ( head[3] & FT_GZIP_ORIG_NAME ) for (;;) { FT_UInt c; if ( FT_READ_BYTE( c ) ) goto Exit; if ( c == 0 ) break; } /* skip .gz comment */ if ( head[3] & FT_GZIP_COMMENT ) for (;;) { FT_UInt c; if ( FT_READ_BYTE( c ) ) goto Exit; if ( c == 0 ) break; } /* skip CRC */ if ( head[3] & FT_GZIP_HEAD_CRC ) if ( FT_STREAM_SKIP( 2 ) ) goto Exit; Exit: return error; }
CID_New_Parser( CID_Parser* parser, FT_Stream stream, FT_Memory memory, PSAux_Service psaux ) { FT_Error error; FT_ULong base_offset, offset, ps_len; FT_Byte buffer[256 + 10]; FT_Int buff_len; FT_MEM_SET( parser, 0, sizeof ( *parser ) ); psaux->ps_parser_funcs->init( &parser->root, 0, 0, memory ); parser->stream = stream; base_offset = FT_STREAM_POS(); /* first of all, check the font format in the header */ if ( FT_FRAME_ENTER( 31 ) ) goto Exit; if ( ft_strncmp( (char *)stream->cursor, "%!PS-Adobe-3.0 Resource-CIDFont", 31 ) ) { FT_TRACE2(( "[not a valid CID-keyed font]\n" )); error = CID_Err_Unknown_File_Format; } FT_FRAME_EXIT(); if ( error ) goto Exit; /* now, read the rest of the file, until we find a `StartData' */ buff_len = 256; for (;;) { FT_Byte *p, *limit = buffer + 256; FT_ULong top_position; /* fill input buffer */ buff_len -= 256; if ( buff_len > 0 ) FT_MEM_MOVE( buffer, limit, buff_len ); p = buffer + buff_len; if ( FT_STREAM_READ( p, 256 + 10 - buff_len ) ) goto Exit; top_position = FT_STREAM_POS() - buff_len; buff_len = 256 + 10; /* look for `StartData' */ for ( p = buffer; p < limit; p++ ) { if ( p[0] == 'S' && ft_strncmp( (char*)p, "StartData", 9 ) == 0 ) { /* save offset of binary data after `StartData' */ offset = (FT_ULong)( top_position - ( limit - p ) + 10 ); goto Found; } } } Found: /* we have found the start of the binary data. We will now */ /* rewind and extract the frame of corresponding to the Postscript */ /* section */ ps_len = offset - base_offset; if ( FT_STREAM_SEEK( base_offset ) || FT_FRAME_EXTRACT( ps_len, parser->postscript ) ) goto Exit; parser->data_offset = offset; parser->postscript_len = ps_len; parser->root.base = parser->postscript; parser->root.cursor = parser->postscript; parser->root.limit = parser->root.cursor + ps_len; parser->num_dict = -1; Exit: return error; }
T1_New_Parser( T1_Parser parser, FT_Stream stream, FT_Memory memory, PSAux_Service psaux ) { FT_Error error; FT_UShort tag; FT_ULong size; psaux->ps_parser_funcs->init( &parser->root, 0, 0, memory ); parser->stream = stream; parser->base_len = 0; parser->base_dict = 0; parser->private_len = 0; parser->private_dict = 0; parser->in_pfb = 0; parser->in_memory = 0; parser->single_block = 0; /* check the header format */ error = check_type1_format( stream, "%!PS-AdobeFont", 14 ); if ( error ) { if ( FT_ERR_NEQ( error, Unknown_File_Format ) ) goto Exit; error = check_type1_format( stream, "%!FontType", 10 ); if ( error ) { FT_TRACE2(( " not a Type 1 font\n" )); goto Exit; } } /******************************************************************/ /* */ /* Here a short summary of what is going on: */ /* */ /* When creating a new Type 1 parser, we try to locate and load */ /* the base dictionary if this is possible (i.e., for PFB */ /* files). Otherwise, we load the whole font into memory. */ /* */ /* When `loading' the base dictionary, we only setup pointers */ /* in the case of a memory-based stream. Otherwise, we */ /* allocate and load the base dictionary in it. */ /* */ /* parser->in_pfb is set if we are in a binary (`.pfb') font. */ /* parser->in_memory is set if we have a memory stream. */ /* */ /* try to compute the size of the base dictionary; */ /* look for a Postscript binary file tag, i.e., 0x8001 */ if ( FT_STREAM_SEEK( 0L ) ) goto Exit; error = read_pfb_tag( stream, &tag, &size ); if ( error ) goto Exit; if ( tag != 0x8001U ) { /* assume that this is a PFA file for now; an error will */ /* be produced later when more things are checked */ if ( FT_STREAM_SEEK( 0L ) ) goto Exit; size = stream->size; } else parser->in_pfb = 1; /* now, try to load `size' bytes of the `base' dictionary we */ /* found previously */ /* if it is a memory-based resource, set up pointers */ if ( !stream->read ) { parser->base_dict = (FT_Byte*)stream->base + stream->pos; parser->base_len = size; parser->in_memory = 1; /* check that the `size' field is valid */ if ( FT_STREAM_SKIP( size ) ) goto Exit; } else { /* read segment in memory -- this is clumsy, but so does the format */ if ( FT_ALLOC( parser->base_dict, size ) || FT_STREAM_READ( parser->base_dict, size ) ) goto Exit; parser->base_len = size; } parser->root.base = parser->base_dict; parser->root.cursor = parser->base_dict; parser->root.limit = parser->root.cursor + parser->base_len; Exit: if ( error && !parser->in_memory ) FT_FREE( parser->base_dict ); return error; }
static FT_Error PCF_Glyph_Load( FT_GlyphSlot slot, FT_Size size, FT_UInt glyph_index, FT_Int32 load_flags ) { PCF_Face face = (PCF_Face)FT_SIZE_FACE( size ); FT_Stream stream = face->root.stream; FT_Error error = PCF_Err_Ok; FT_Bitmap* bitmap = &slot->bitmap; PCF_Metric metric; int bytes; FT_UNUSED( load_flags ); FT_TRACE4(( "load_glyph %d ---", glyph_index )); if ( !face ) { error = PCF_Err_Invalid_Argument; goto Exit; } if ( glyph_index > 0 ) glyph_index--; metric = face->metrics + glyph_index; bitmap->rows = metric->ascent + metric->descent; bitmap->width = metric->rightSideBearing - metric->leftSideBearing; bitmap->num_grays = 1; bitmap->pixel_mode = FT_PIXEL_MODE_MONO; FT_TRACE6(( "BIT_ORDER %d ; BYTE_ORDER %d ; GLYPH_PAD %d\n", PCF_BIT_ORDER( face->bitmapsFormat ), PCF_BYTE_ORDER( face->bitmapsFormat ), PCF_GLYPH_PAD( face->bitmapsFormat ) )); switch ( PCF_GLYPH_PAD( face->bitmapsFormat ) ) { case 1: bitmap->pitch = ( bitmap->width + 7 ) >> 3; break; case 2: bitmap->pitch = ( ( bitmap->width + 15 ) >> 4 ) << 1; break; case 4: bitmap->pitch = ( ( bitmap->width + 31 ) >> 5 ) << 2; break; case 8: bitmap->pitch = ( ( bitmap->width + 63 ) >> 6 ) << 3; break; default: return PCF_Err_Invalid_File_Format; } /* XXX: to do: are there cases that need repadding the bitmap? */ bytes = bitmap->pitch * bitmap->rows; error = ft_glyphslot_alloc_bitmap( slot, bytes ); if ( error ) goto Exit; if ( FT_STREAM_SEEK( metric->bits ) || FT_STREAM_READ( bitmap->buffer, bytes ) ) goto Exit; if ( PCF_BIT_ORDER( face->bitmapsFormat ) != MSBFirst ) BitOrderInvert( bitmap->buffer, bytes ); if ( ( PCF_BYTE_ORDER( face->bitmapsFormat ) != PCF_BIT_ORDER( face->bitmapsFormat ) ) ) { switch ( PCF_SCAN_UNIT( face->bitmapsFormat ) ) { case 1: break; case 2: TwoByteSwap( bitmap->buffer, bytes ); break; case 4: FourByteSwap( bitmap->buffer, bytes ); break; } } slot->bitmap_left = metric->leftSideBearing; slot->bitmap_top = metric->ascent; slot->metrics.horiAdvance = metric->characterWidth << 6; slot->metrics.horiBearingX = metric->leftSideBearing << 6; slot->metrics.horiBearingY = metric->ascent << 6; slot->metrics.width = ( metric->rightSideBearing - metric->leftSideBearing ) << 6; slot->metrics.height = bitmap->rows << 6; slot->linearHoriAdvance = (FT_Fixed)bitmap->width << 16; slot->format = FT_GLYPH_FORMAT_BITMAP; FT_TRACE4(( " --- ok\n" )); Exit: return error; }
static const char* get_sfnt_postscript_name( TT_Face face ) { FT_Int n, found_win, found_apple; const char* result = NULL; /* shouldn't happen, but just in case to avoid memory leaks */ if ( face->root.internal->postscript_name ) return face->root.internal->postscript_name; /* scan the name table to see whether we have a Postscript name here, */ /* either in Macintosh or Windows platform encodings */ found_win = -1; found_apple = -1; for ( n = 0; n < face->num_names; n++ ) { TT_NameEntryRec* name = face->name_table.names + n; if ( name->nameID == 6 && name->stringLength > 0 ) { if ( name->platformID == 3 && name->encodingID == 1 && name->languageID == 0x409 ) found_win = n; if ( name->platformID == 1 && name->encodingID == 0 && name->languageID == 0 ) found_apple = n; } } if ( found_win != -1 ) { FT_Memory memory = face->root.memory; TT_NameEntryRec* name = face->name_table.names + found_win; FT_UInt len = name->stringLength / 2; FT_Error error; if ( !FT_ALLOC( result, name->stringLength + 1 ) ) { FT_Stream stream = face->name_table.stream; FT_String* r = (FT_String*)result; FT_Byte* p = (FT_Byte*)name->string; if ( FT_STREAM_SEEK( name->stringOffset ) || FT_FRAME_ENTER( name->stringLength ) ) { FT_FREE( result ); name->stringLength = 0; name->stringOffset = 0; FT_FREE( name->string ); goto Exit; } p = (FT_Byte*)stream->cursor; for ( ; len > 0; len--, p += 2 ) { if ( p[0] == 0 && p[1] >= 32 && p[1] < 128 ) *r++ = p[1]; } *r = '\0'; FT_FRAME_EXIT(); } goto Exit; } if ( found_apple != -1 ) { FT_Memory memory = face->root.memory; TT_NameEntryRec* name = face->name_table.names + found_apple; FT_UInt len = name->stringLength; FT_Error error; if ( !FT_ALLOC( result, len + 1 ) ) { FT_Stream stream = face->name_table.stream; if ( FT_STREAM_SEEK( name->stringOffset ) || FT_STREAM_READ( result, len ) ) { name->stringOffset = 0; name->stringLength = 0; FT_FREE( name->string ); FT_FREE( result ); goto Exit; } ((char*)result)[len] = '\0'; } } Exit: face->root.internal->postscript_name = result; return result; }
TT_CharMap_Load( TT_Face face, TT_CMapTable cmap, FT_Stream stream ) { FT_Error error; FT_Memory memory; FT_UShort num_SH, num_Seg, i; FT_ULong j, n; FT_UShort u, l; TT_CMap0 cmap0; TT_CMap2 cmap2; TT_CMap4 cmap4; TT_CMap6 cmap6; TT_CMap8_12 cmap8_12; TT_CMap10 cmap10; TT_CMap2SubHeader cmap2sub; TT_CMap4Segment segments; TT_CMapGroup groups; if ( cmap->loaded ) return SFNT_Err_Ok; memory = stream->memory; if ( FT_STREAM_SEEK( cmap->offset ) ) return error; switch ( cmap->format ) { case 0: cmap0 = &cmap->c.cmap0; if ( FT_READ_USHORT( cmap0->language ) || FT_ALLOC( cmap0->glyphIdArray, 256L ) || FT_STREAM_READ( cmap0->glyphIdArray, 256L ) ) goto Fail; cmap->get_index = code_to_index0; cmap->get_next_char = code_to_next0; break; case 2: num_SH = 0; cmap2 = &cmap->c.cmap2; /* allocate subheader keys */ if ( FT_NEW_ARRAY( cmap2->subHeaderKeys, 256 ) || FT_FRAME_ENTER( 2L + 512L ) ) goto Fail; cmap2->language = FT_GET_USHORT(); for ( i = 0; i < 256; i++ ) { u = (FT_UShort)( FT_GET_USHORT() / 8 ); cmap2->subHeaderKeys[i] = u; if ( num_SH < u ) num_SH = u; } FT_FRAME_EXIT(); /* load subheaders */ cmap2->numGlyphId = l = (FT_UShort)( ( ( cmap->length - 2L * ( 256 + 3 ) - num_SH * 8L ) & 0xFFFFU ) / 2 ); if ( FT_NEW_ARRAY( cmap2->subHeaders, num_SH + 1 ) || FT_FRAME_ENTER( ( num_SH + 1 ) * 8L ) ) { FT_FREE( cmap2->subHeaderKeys ); goto Fail; } cmap2sub = cmap2->subHeaders; for ( i = 0; i <= num_SH; i++ ) { cmap2sub->firstCode = FT_GET_USHORT(); cmap2sub->entryCount = FT_GET_USHORT(); cmap2sub->idDelta = FT_GET_SHORT(); /* we apply the location offset immediately */ cmap2sub->idRangeOffset = (FT_UShort)( FT_GET_USHORT() - ( num_SH - i ) * 8 - 2 ); cmap2sub++; } FT_FRAME_EXIT(); /* load glyph IDs */ if ( FT_NEW_ARRAY( cmap2->glyphIdArray, l ) || FT_FRAME_ENTER( l * 2L ) ) { FT_FREE( cmap2->subHeaders ); FT_FREE( cmap2->subHeaderKeys ); goto Fail; } for ( i = 0; i < l; i++ ) cmap2->glyphIdArray[i] = FT_GET_USHORT(); FT_FRAME_EXIT(); cmap->get_index = code_to_index2; cmap->get_next_char = code_to_next2; break; case 4: cmap4 = &cmap->c.cmap4; /* load header */ if ( FT_FRAME_ENTER( 10L ) ) goto Fail; cmap4->language = FT_GET_USHORT(); cmap4->segCountX2 = FT_GET_USHORT(); cmap4->searchRange = FT_GET_USHORT(); cmap4->entrySelector = FT_GET_USHORT(); cmap4->rangeShift = FT_GET_USHORT(); num_Seg = (FT_UShort)( cmap4->segCountX2 / 2 ); FT_FRAME_EXIT(); /* load segments */ if ( FT_NEW_ARRAY( cmap4->segments, num_Seg ) || FT_FRAME_ENTER( ( num_Seg * 4 + 1 ) * 2L ) ) goto Fail; segments = cmap4->segments; for ( i = 0; i < num_Seg; i++ ) segments[i].endCount = FT_GET_USHORT(); (void)FT_GET_USHORT(); for ( i = 0; i < num_Seg; i++ ) segments[i].startCount = FT_GET_USHORT(); for ( i = 0; i < num_Seg; i++ ) segments[i].idDelta = FT_GET_SHORT(); for ( i = 0; i < num_Seg; i++ ) segments[i].idRangeOffset = FT_GET_USHORT(); FT_FRAME_EXIT(); cmap4->numGlyphId = l = (FT_UShort)( ( ( cmap->length - ( 16L + 8L * num_Seg ) ) & 0xFFFFU ) / 2 ); /* load IDs */ if ( FT_NEW_ARRAY( cmap4->glyphIdArray, l ) || FT_FRAME_ENTER( l * 2L ) ) { FT_FREE( cmap4->segments ); goto Fail; } for ( i = 0; i < l; i++ ) cmap4->glyphIdArray[i] = FT_GET_USHORT(); FT_FRAME_EXIT(); cmap4->last_segment = cmap4->segments; cmap->get_index = code_to_index4; cmap->get_next_char = code_to_next4; break; case 6: cmap6 = &cmap->c.cmap6; if ( FT_FRAME_ENTER( 6L ) ) goto Fail; cmap6->language = FT_GET_USHORT(); cmap6->firstCode = FT_GET_USHORT(); cmap6->entryCount = FT_GET_USHORT(); FT_FRAME_EXIT(); l = cmap6->entryCount; if ( FT_NEW_ARRAY( cmap6->glyphIdArray, l ) || FT_FRAME_ENTER( l * 2L ) ) goto Fail; for ( i = 0; i < l; i++ ) cmap6->glyphIdArray[i] = FT_GET_USHORT(); FT_FRAME_EXIT(); cmap->get_index = code_to_index6; cmap->get_next_char = code_to_next6; break; case 8: case 12: cmap8_12 = &cmap->c.cmap8_12; if ( FT_FRAME_ENTER( 8L ) ) goto Fail; cmap->length = FT_GET_ULONG(); cmap8_12->language = FT_GET_ULONG(); FT_FRAME_EXIT(); if ( cmap->format == 8 ) if ( FT_STREAM_SKIP( 8192L ) ) goto Fail; if ( FT_READ_ULONG( cmap8_12->nGroups ) ) goto Fail; n = cmap8_12->nGroups; if ( FT_NEW_ARRAY( cmap8_12->groups, n ) || FT_FRAME_ENTER( n * 3 * 4L ) ) goto Fail; groups = cmap8_12->groups; for ( j = 0; j < n; j++ ) { groups[j].startCharCode = FT_GET_ULONG(); groups[j].endCharCode = FT_GET_ULONG(); groups[j].startGlyphID = FT_GET_ULONG(); } FT_FRAME_EXIT(); cmap8_12->last_group = cmap8_12->groups; cmap->get_index = code_to_index8_12; cmap->get_next_char = code_to_next8_12; break; case 10: cmap10 = &cmap->c.cmap10; if ( FT_FRAME_ENTER( 16L ) ) goto Fail; cmap->length = FT_GET_ULONG(); cmap10->language = FT_GET_ULONG(); cmap10->startCharCode = FT_GET_ULONG(); cmap10->numChars = FT_GET_ULONG(); FT_FRAME_EXIT(); n = cmap10->numChars; if ( FT_NEW_ARRAY( cmap10->glyphs, n ) || FT_FRAME_ENTER( n * 2L ) ) goto Fail; for ( j = 0; j < n; j++ ) cmap10->glyphs[j] = FT_GET_USHORT(); FT_FRAME_EXIT(); cmap->get_index = code_to_index10; cmap->get_next_char = code_to_next10; break; default: /* corrupt character mapping table */ return SFNT_Err_Invalid_CharMap_Format; } return SFNT_Err_Ok; Fail: TT_CharMap_Free( face, cmap ); return error; }