diff -r 92af50454cf2 -r 8054d9d775fd misc/libfreetype/src/type42/t42parse.c --- a/misc/libfreetype/src/type42/t42parse.c Fri Oct 11 11:55:31 2013 +0200 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,1187 +0,0 @@ -/***************************************************************************/ -/* */ -/* t42parse.c */ -/* */ -/* Type 42 font parser (body). */ -/* */ -/* Copyright 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 by */ -/* Roberto Alameda. */ -/* */ -/* 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 "t42parse.h" -#include "t42error.h" -#include FT_INTERNAL_DEBUG_H -#include FT_INTERNAL_STREAM_H -#include FT_INTERNAL_POSTSCRIPT_AUX_H - - - /*************************************************************************/ - /* */ - /* 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_t42 - - - static void - t42_parse_font_matrix( T42_Face face, - T42_Loader loader ); - static void - t42_parse_encoding( T42_Face face, - T42_Loader loader ); - - static void - t42_parse_charstrings( T42_Face face, - T42_Loader loader ); - - static void - t42_parse_sfnts( T42_Face face, - T42_Loader loader ); - - - /* as Type42 fonts have no Private dict, */ - /* we set the last argument of T1_FIELD_XXX to 0 */ - static const - T1_FieldRec t42_keywords[] = - { - -#undef FT_STRUCTURE -#define FT_STRUCTURE T1_FontInfo -#undef T1CODE -#define T1CODE T1_FIELD_LOCATION_FONT_INFO - - T1_FIELD_STRING( "version", version, 0 ) - T1_FIELD_STRING( "Notice", notice, 0 ) - T1_FIELD_STRING( "FullName", full_name, 0 ) - T1_FIELD_STRING( "FamilyName", family_name, 0 ) - T1_FIELD_STRING( "Weight", weight, 0 ) - T1_FIELD_NUM ( "ItalicAngle", italic_angle, 0 ) - T1_FIELD_BOOL ( "isFixedPitch", is_fixed_pitch, 0 ) - T1_FIELD_NUM ( "UnderlinePosition", underline_position, 0 ) - T1_FIELD_NUM ( "UnderlineThickness", underline_thickness, 0 ) - -#undef FT_STRUCTURE -#define FT_STRUCTURE PS_FontExtraRec -#undef T1CODE -#define T1CODE T1_FIELD_LOCATION_FONT_EXTRA - - T1_FIELD_NUM ( "FSType", fs_type, 0 ) - -#undef FT_STRUCTURE -#define FT_STRUCTURE T1_FontRec -#undef T1CODE -#define T1CODE T1_FIELD_LOCATION_FONT_DICT - - T1_FIELD_KEY ( "FontName", font_name, 0 ) - T1_FIELD_NUM ( "PaintType", paint_type, 0 ) - T1_FIELD_NUM ( "FontType", font_type, 0 ) - T1_FIELD_FIXED( "StrokeWidth", stroke_width, 0 ) - -#undef FT_STRUCTURE -#define FT_STRUCTURE FT_BBox -#undef T1CODE -#define T1CODE T1_FIELD_LOCATION_BBOX - - T1_FIELD_BBOX("FontBBox", xMin, 0 ) - - T1_FIELD_CALLBACK( "FontMatrix", t42_parse_font_matrix, 0 ) - T1_FIELD_CALLBACK( "Encoding", t42_parse_encoding, 0 ) - T1_FIELD_CALLBACK( "CharStrings", t42_parse_charstrings, 0 ) - T1_FIELD_CALLBACK( "sfnts", t42_parse_sfnts, 0 ) - - { 0, T1_FIELD_LOCATION_CID_INFO, T1_FIELD_TYPE_NONE, 0, 0, 0, 0, 0, 0 } - }; - - -#define T1_Add_Table( p, i, o, l ) (p)->funcs.add( (p), i, o, l ) -#define T1_Done_Table( p ) \ - do \ - { \ - if ( (p)->funcs.done ) \ - (p)->funcs.done( p ); \ - } while ( 0 ) -#define T1_Release_Table( p ) \ - do \ - { \ - if ( (p)->funcs.release ) \ - (p)->funcs.release( p ); \ - } while ( 0 ) - -#define T1_Skip_Spaces( p ) (p)->root.funcs.skip_spaces( &(p)->root ) -#define T1_Skip_PS_Token( p ) (p)->root.funcs.skip_PS_token( &(p)->root ) - -#define T1_ToInt( p ) \ - (p)->root.funcs.to_int( &(p)->root ) -#define T1_ToBytes( p, b, m, n, d ) \ - (p)->root.funcs.to_bytes( &(p)->root, b, m, n, d ) - -#define T1_ToFixedArray( p, m, f, t ) \ - (p)->root.funcs.to_fixed_array( &(p)->root, m, f, t ) -#define T1_ToToken( p, t ) \ - (p)->root.funcs.to_token( &(p)->root, t ) - -#define T1_Load_Field( p, f, o, m, pf ) \ - (p)->root.funcs.load_field( &(p)->root, f, o, m, pf ) -#define T1_Load_Field_Table( p, f, o, m, pf ) \ - (p)->root.funcs.load_field_table( &(p)->root, f, o, m, pf ) - - - /********************* Parsing Functions ******************/ - - FT_LOCAL_DEF( FT_Error ) - t42_parser_init( T42_Parser parser, - FT_Stream stream, - FT_Memory memory, - PSAux_Service psaux ) - { - FT_Error error = T42_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 = T42_Err_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; - } - - - FT_LOCAL_DEF( void ) - t42_parser_done( T42_Parser parser ) - { - FT_Memory memory = parser->root.memory; - - - /* free the base dictionary only when we have a disk stream */ - if ( !parser->in_memory ) - FT_FREE( parser->base_dict ); - - parser->root.funcs.done( &parser->root ); - } - - - static int - t42_is_space( FT_Byte c ) - { - return ( c == ' ' || c == '\t' || - c == '\r' || c == '\n' || c == '\f' || - c == '\0' ); - } - - - static void - t42_parse_font_matrix( T42_Face face, - T42_Loader loader ) - { - T42_Parser parser = &loader->parser; - FT_Matrix* matrix = &face->type1.font_matrix; - FT_Vector* offset = &face->type1.font_offset; - FT_Face root = (FT_Face)&face->root; - FT_Fixed temp[6]; - FT_Fixed temp_scale; - - - (void)T1_ToFixedArray( parser, 6, temp, 3 ); - - temp_scale = FT_ABS( temp[3] ); - - /* Set Units per EM based on FontMatrix values. We set the value to */ - /* 1000 / temp_scale, because temp_scale was already multiplied by */ - /* 1000 (in t1_tofixed, from psobjs.c). */ - - root->units_per_EM = (FT_UShort)( FT_DivFix( 1000 * 0x10000L, - temp_scale ) >> 16 ); - - /* we need to scale the values by 1.0/temp_scale */ - if ( temp_scale != 0x10000L ) - { - temp[0] = FT_DivFix( temp[0], temp_scale ); - temp[1] = FT_DivFix( temp[1], temp_scale ); - temp[2] = FT_DivFix( temp[2], temp_scale ); - temp[4] = FT_DivFix( temp[4], temp_scale ); - temp[5] = FT_DivFix( temp[5], temp_scale ); - temp[3] = 0x10000L; - } - - matrix->xx = temp[0]; - matrix->yx = temp[1]; - matrix->xy = temp[2]; - matrix->yy = temp[3]; - - /* note that the offsets must be expressed in integer font units */ - offset->x = temp[4] >> 16; - offset->y = temp[5] >> 16; - } - - - static void - t42_parse_encoding( T42_Face face, - T42_Loader loader ) - { - T42_Parser parser = &loader->parser; - FT_Byte* cur; - FT_Byte* limit = parser->root.limit; - - PSAux_Service psaux = (PSAux_Service)face->psaux; - - - T1_Skip_Spaces( parser ); - cur = parser->root.cursor; - if ( cur >= limit ) - { - FT_ERROR(( "t42_parse_encoding: out of bounds\n" )); - parser->root.error = T42_Err_Invalid_File_Format; - return; - } - - /* if we have a number or `[', the encoding is an array, */ - /* and we must load it now */ - if ( ft_isdigit( *cur ) || *cur == '[' ) - { - T1_Encoding encode = &face->type1.encoding; - FT_UInt count, n; - PS_Table char_table = &loader->encoding_table; - FT_Memory memory = parser->root.memory; - FT_Error error; - FT_Bool only_immediates = 0; - - - /* read the number of entries in the encoding; should be 256 */ - if ( *cur == '[' ) - { - count = 256; - only_immediates = 1; - parser->root.cursor++; - } - else - count = (FT_UInt)T1_ToInt( parser ); - - T1_Skip_Spaces( parser ); - if ( parser->root.cursor >= limit ) - return; - - /* we use a T1_Table to store our charnames */ - loader->num_chars = encode->num_chars = count; - if ( FT_NEW_ARRAY( encode->char_index, count ) || - FT_NEW_ARRAY( encode->char_name, count ) || - FT_SET_ERROR( psaux->ps_table_funcs->init( - char_table, count, memory ) ) ) - { - parser->root.error = error; - return; - } - - /* We need to `zero' out encoding_table.elements */ - for ( n = 0; n < count; n++ ) - { - char* notdef = (char *)".notdef"; - - - T1_Add_Table( char_table, n, notdef, 8 ); - } - - /* Now we need to read records of the form */ - /* */ - /* ... charcode /charname ... */ - /* */ - /* for each entry in our table. */ - /* */ - /* We simply look for a number followed by an immediate */ - /* name. Note that this ignores correctly the sequence */ - /* that is often seen in type42 fonts: */ - /* */ - /* 0 1 255 { 1 index exch /.notdef put } for dup */ - /* */ - /* used to clean the encoding array before anything else. */ - /* */ - /* Alternatively, if the array is directly given as */ - /* */ - /* /Encoding [ ... ] */ - /* */ - /* we only read immediates. */ - - n = 0; - T1_Skip_Spaces( parser ); - - while ( parser->root.cursor < limit ) - { - cur = parser->root.cursor; - - /* we stop when we encounter `def' or `]' */ - if ( *cur == 'd' && cur + 3 < limit ) - { - if ( cur[1] == 'e' && - cur[2] == 'f' && - t42_is_space( cur[3] ) ) - { - FT_TRACE6(( "encoding end\n" )); - cur += 3; - break; - } - } - if ( *cur == ']' ) - { - FT_TRACE6(( "encoding end\n" )); - cur++; - break; - } - - /* check whether we have found an entry */ - if ( ft_isdigit( *cur ) || only_immediates ) - { - FT_Int charcode; - - - if ( only_immediates ) - charcode = n; - else - { - charcode = (FT_Int)T1_ToInt( parser ); - T1_Skip_Spaces( parser ); - } - - cur = parser->root.cursor; - - if ( *cur == '/' && cur + 2 < limit && n < count ) - { - FT_PtrDist len; - - - cur++; - - parser->root.cursor = cur; - T1_Skip_PS_Token( parser ); - if ( parser->root.error ) - return; - - len = parser->root.cursor - cur; - - parser->root.error = T1_Add_Table( char_table, charcode, - cur, len + 1 ); - if ( parser->root.error ) - return; - char_table->elements[charcode][len] = '\0'; - - n++; - } - } - else - { - T1_Skip_PS_Token( parser ); - if ( parser->root.error ) - return; - } - - T1_Skip_Spaces( parser ); - } - - face->type1.encoding_type = T1_ENCODING_TYPE_ARRAY; - parser->root.cursor = cur; - } - - /* Otherwise, we should have either `StandardEncoding', */ - /* `ExpertEncoding', or `ISOLatin1Encoding' */ - else - { - if ( cur + 17 < limit && - ft_strncmp( (const char*)cur, "StandardEncoding", 16 ) == 0 ) - face->type1.encoding_type = T1_ENCODING_TYPE_STANDARD; - - else if ( cur + 15 < limit && - ft_strncmp( (const char*)cur, "ExpertEncoding", 14 ) == 0 ) - face->type1.encoding_type = T1_ENCODING_TYPE_EXPERT; - - else if ( cur + 18 < limit && - ft_strncmp( (const char*)cur, "ISOLatin1Encoding", 17 ) == 0 ) - face->type1.encoding_type = T1_ENCODING_TYPE_ISOLATIN1; - - else - { - FT_ERROR(( "t42_parse_encoding: invalid token\n" )); - parser->root.error = T42_Err_Invalid_File_Format; - } - } - } - - - typedef enum T42_Load_Status_ - { - BEFORE_START, - BEFORE_TABLE_DIR, - OTHER_TABLES - - } T42_Load_Status; - - - static void - t42_parse_sfnts( T42_Face face, - T42_Loader loader ) - { - T42_Parser parser = &loader->parser; - FT_Memory memory = parser->root.memory; - FT_Byte* cur; - FT_Byte* limit = parser->root.limit; - FT_Error error; - FT_Int num_tables = 0; - FT_ULong count, ttf_size = 0; - - FT_Long n, string_size, old_string_size, real_size; - FT_Byte* string_buf = NULL; - FT_Bool allocated = 0; - - T42_Load_Status status; - - - /* The format is */ - /* */ - /* /sfnts [ ... ] def */ - /* */ - /* or */ - /* */ - /* /sfnts [ */ - /* RD */ - /* RD */ - /* ... */ - /* ] def */ - /* */ - /* with exactly one space after the `RD' token. */ - - T1_Skip_Spaces( parser ); - - if ( parser->root.cursor >= limit || *parser->root.cursor++ != '[' ) - { - FT_ERROR(( "t42_parse_sfnts: can't find begin of sfnts vector\n" )); - error = T42_Err_Invalid_File_Format; - goto Fail; - } - - T1_Skip_Spaces( parser ); - status = BEFORE_START; - string_size = 0; - old_string_size = 0; - count = 0; - - while ( parser->root.cursor < limit ) - { - cur = parser->root.cursor; - - if ( *cur == ']' ) - { - parser->root.cursor++; - goto Exit; - } - - else if ( *cur == '<' ) - { - T1_Skip_PS_Token( parser ); - if ( parser->root.error ) - goto Exit; - - /* don't include delimiters */ - string_size = (FT_Long)( ( parser->root.cursor - cur - 2 + 1 ) / 2 ); - if ( FT_REALLOC( string_buf, old_string_size, string_size ) ) - goto Fail; - - allocated = 1; - - parser->root.cursor = cur; - (void)T1_ToBytes( parser, string_buf, string_size, &real_size, 1 ); - old_string_size = string_size; - string_size = real_size; - } - - else if ( ft_isdigit( *cur ) ) - { - if ( allocated ) - { - FT_ERROR(( "t42_parse_sfnts: " - "can't handle mixed binary and hex strings\n" )); - error = T42_Err_Invalid_File_Format; - goto Fail; - } - - string_size = T1_ToInt( parser ); - if ( string_size < 0 ) - { - FT_ERROR(( "t42_parse_sfnts: invalid string size\n" )); - error = T42_Err_Invalid_File_Format; - goto Fail; - } - - T1_Skip_PS_Token( parser ); /* `RD' */ - if ( parser->root.error ) - return; - - string_buf = parser->root.cursor + 1; /* one space after `RD' */ - - if ( limit - parser->root.cursor < string_size ) - { - FT_ERROR(( "t42_parse_sfnts: too many binary data\n" )); - error = T42_Err_Invalid_File_Format; - goto Fail; - } - else - parser->root.cursor += string_size + 1; - } - - if ( !string_buf ) - { - FT_ERROR(( "t42_parse_sfnts: invalid data in sfnts array\n" )); - error = T42_Err_Invalid_File_Format; - goto Fail; - } - - /* A string can have a trailing zero byte for padding. Ignore it. */ - if ( string_buf[string_size - 1] == 0 && ( string_size % 2 == 1 ) ) - string_size--; - - if ( !string_size ) - { - FT_ERROR(( "t42_parse_sfnts: invalid string\n" )); - error = T42_Err_Invalid_File_Format; - goto Fail; - } - - for ( n = 0; n < string_size; n++ ) - { - switch ( status ) - { - case BEFORE_START: - /* load offset table, 12 bytes */ - if ( count < 12 ) - { - face->ttf_data[count++] = string_buf[n]; - continue; - } - else - { - num_tables = 16 * face->ttf_data[4] + face->ttf_data[5]; - status = BEFORE_TABLE_DIR; - ttf_size = 12 + 16 * num_tables; - - if ( FT_REALLOC( face->ttf_data, 12, ttf_size ) ) - goto Fail; - } - /* fall through */ - - case BEFORE_TABLE_DIR: - /* the offset table is read; read the table directory */ - if ( count < ttf_size ) - { - face->ttf_data[count++] = string_buf[n]; - continue; - } - else - { - int i; - FT_ULong len; - - - for ( i = 0; i < num_tables; i++ ) - { - FT_Byte* p = face->ttf_data + 12 + 16 * i + 12; - - - len = FT_PEEK_ULONG( p ); - - /* Pad to a 4-byte boundary length */ - ttf_size += ( len + 3 ) & ~3; - } - - status = OTHER_TABLES; - face->ttf_size = ttf_size; - - /* there are no more than 256 tables, so no size check here */ - if ( FT_REALLOC( face->ttf_data, 12 + 16 * num_tables, - ttf_size + 1 ) ) - goto Fail; - } - /* fall through */ - - case OTHER_TABLES: - /* all other tables are just copied */ - if ( count >= ttf_size ) - { - FT_ERROR(( "t42_parse_sfnts: too many binary data\n" )); - error = T42_Err_Invalid_File_Format; - goto Fail; - } - face->ttf_data[count++] = string_buf[n]; - } - } - - T1_Skip_Spaces( parser ); - } - - /* if control reaches this point, the format was not valid */ - error = T42_Err_Invalid_File_Format; - - Fail: - parser->root.error = error; - - Exit: - if ( allocated ) - FT_FREE( string_buf ); - } - - - static void - t42_parse_charstrings( T42_Face face, - T42_Loader loader ) - { - T42_Parser parser = &loader->parser; - PS_Table code_table = &loader->charstrings; - PS_Table name_table = &loader->glyph_names; - PS_Table swap_table = &loader->swap_table; - FT_Memory memory = parser->root.memory; - FT_Error error; - - PSAux_Service psaux = (PSAux_Service)face->psaux; - - FT_Byte* cur; - FT_Byte* limit = parser->root.limit; - FT_UInt n; - FT_UInt notdef_index = 0; - FT_Byte notdef_found = 0; - - - T1_Skip_Spaces( parser ); - - if ( parser->root.cursor >= limit ) - { - FT_ERROR(( "t42_parse_charstrings: out of bounds\n" )); - error = T42_Err_Invalid_File_Format; - goto Fail; - } - - if ( ft_isdigit( *parser->root.cursor ) ) - { - loader->num_glyphs = (FT_UInt)T1_ToInt( parser ); - if ( parser->root.error ) - return; - } - else if ( *parser->root.cursor == '<' ) - { - /* We have `<< ... >>'. Count the number of `/' in the dictionary */ - /* to get its size. */ - FT_UInt count = 0; - - - T1_Skip_PS_Token( parser ); - if ( parser->root.error ) - return; - T1_Skip_Spaces( parser ); - cur = parser->root.cursor; - - while ( parser->root.cursor < limit ) - { - if ( *parser->root.cursor == '/' ) - count++; - else if ( *parser->root.cursor == '>' ) - { - loader->num_glyphs = count; - parser->root.cursor = cur; /* rewind */ - break; - } - T1_Skip_PS_Token( parser ); - if ( parser->root.error ) - return; - T1_Skip_Spaces( parser ); - } - } - else - { - FT_ERROR(( "t42_parse_charstrings: invalid token\n" )); - error = T42_Err_Invalid_File_Format; - goto Fail; - } - - if ( parser->root.cursor >= limit ) - { - FT_ERROR(( "t42_parse_charstrings: out of bounds\n" )); - error = T42_Err_Invalid_File_Format; - goto Fail; - } - - /* initialize tables */ - - error = psaux->ps_table_funcs->init( code_table, - loader->num_glyphs, - memory ); - if ( error ) - goto Fail; - - error = psaux->ps_table_funcs->init( name_table, - loader->num_glyphs, - memory ); - if ( error ) - goto Fail; - - /* Initialize table for swapping index notdef_index and */ - /* index 0 names and codes (if necessary). */ - - error = psaux->ps_table_funcs->init( swap_table, 4, memory ); - if ( error ) - goto Fail; - - n = 0; - - for (;;) - { - /* The format is simple: */ - /* `/glyphname' + index [+ def] */ - - T1_Skip_Spaces( parser ); - - cur = parser->root.cursor; - if ( cur >= limit ) - break; - - /* We stop when we find an `end' keyword or '>' */ - if ( *cur == 'e' && - cur + 3 < limit && - cur[1] == 'n' && - cur[2] == 'd' && - t42_is_space( cur[3] ) ) - break; - if ( *cur == '>' ) - break; - - T1_Skip_PS_Token( parser ); - if ( parser->root.error ) - return; - - if ( *cur == '/' ) - { - FT_PtrDist len; - - - if ( cur + 1 >= limit ) - { - FT_ERROR(( "t42_parse_charstrings: out of bounds\n" )); - error = T42_Err_Invalid_File_Format; - goto Fail; - } - - cur++; /* skip `/' */ - len = parser->root.cursor - cur; - - error = T1_Add_Table( name_table, n, cur, len + 1 ); - if ( error ) - goto Fail; - - /* add a trailing zero to the name table */ - name_table->elements[n][len] = '\0'; - - /* record index of /.notdef */ - if ( *cur == '.' && - ft_strcmp( ".notdef", - (const char*)(name_table->elements[n]) ) == 0 ) - { - notdef_index = n; - notdef_found = 1; - } - - T1_Skip_Spaces( parser ); - - cur = parser->root.cursor; - - (void)T1_ToInt( parser ); - if ( parser->root.cursor >= limit ) - { - FT_ERROR(( "t42_parse_charstrings: out of bounds\n" )); - error = T42_Err_Invalid_File_Format; - goto Fail; - } - - len = parser->root.cursor - cur; - - error = T1_Add_Table( code_table, n, cur, len + 1 ); - if ( error ) - goto Fail; - - code_table->elements[n][len] = '\0'; - - n++; - if ( n >= loader->num_glyphs ) - break; - } - } - - loader->num_glyphs = n; - - if ( !notdef_found ) - { - FT_ERROR(( "t42_parse_charstrings: no /.notdef glyph\n" )); - error = T42_Err_Invalid_File_Format; - goto Fail; - } - - /* if /.notdef does not occupy index 0, do our magic. */ - if ( ft_strcmp( (const char*)".notdef", - (const char*)name_table->elements[0] ) ) - { - /* Swap glyph in index 0 with /.notdef glyph. First, add index 0 */ - /* name and code entries to swap_table. Then place notdef_index */ - /* name and code entries into swap_table. Then swap name and code */ - /* entries at indices notdef_index and 0 using values stored in */ - /* swap_table. */ - - /* Index 0 name */ - error = T1_Add_Table( swap_table, 0, - name_table->elements[0], - name_table->lengths [0] ); - if ( error ) - goto Fail; - - /* Index 0 code */ - error = T1_Add_Table( swap_table, 1, - code_table->elements[0], - code_table->lengths [0] ); - if ( error ) - goto Fail; - - /* Index notdef_index name */ - error = T1_Add_Table( swap_table, 2, - name_table->elements[notdef_index], - name_table->lengths [notdef_index] ); - if ( error ) - goto Fail; - - /* Index notdef_index code */ - error = T1_Add_Table( swap_table, 3, - code_table->elements[notdef_index], - code_table->lengths [notdef_index] ); - if ( error ) - goto Fail; - - error = T1_Add_Table( name_table, notdef_index, - swap_table->elements[0], - swap_table->lengths [0] ); - if ( error ) - goto Fail; - - error = T1_Add_Table( code_table, notdef_index, - swap_table->elements[1], - swap_table->lengths [1] ); - if ( error ) - goto Fail; - - error = T1_Add_Table( name_table, 0, - swap_table->elements[2], - swap_table->lengths [2] ); - if ( error ) - goto Fail; - - error = T1_Add_Table( code_table, 0, - swap_table->elements[3], - swap_table->lengths [3] ); - if ( error ) - goto Fail; - - } - - return; - - Fail: - parser->root.error = error; - } - - - static FT_Error - t42_load_keyword( T42_Face face, - T42_Loader loader, - T1_Field field ) - { - FT_Error error; - void* dummy_object; - void** objects; - FT_UInt max_objects = 0; - - - /* if the keyword has a dedicated callback, call it */ - if ( field->type == T1_FIELD_TYPE_CALLBACK ) - { - field->reader( (FT_Face)face, loader ); - error = loader->parser.root.error; - goto Exit; - } - - /* now the keyword is either a simple field or a table of fields; */ - /* we are now going to take care of it */ - - switch ( field->location ) - { - case T1_FIELD_LOCATION_FONT_INFO: - dummy_object = &face->type1.font_info; - break; - - case T1_FIELD_LOCATION_FONT_EXTRA: - dummy_object = &face->type1.font_extra; - break; - - case T1_FIELD_LOCATION_BBOX: - dummy_object = &face->type1.font_bbox; - break; - - default: - dummy_object = &face->type1; - } - - objects = &dummy_object; - - if ( field->type == T1_FIELD_TYPE_INTEGER_ARRAY || - field->type == T1_FIELD_TYPE_FIXED_ARRAY ) - error = T1_Load_Field_Table( &loader->parser, field, - objects, max_objects, 0 ); - else - error = T1_Load_Field( &loader->parser, field, - objects, max_objects, 0 ); - - Exit: - return error; - } - - - FT_LOCAL_DEF( FT_Error ) - t42_parse_dict( T42_Face face, - T42_Loader loader, - FT_Byte* base, - FT_Long size ) - { - T42_Parser parser = &loader->parser; - FT_Byte* limit; - FT_Int n_keywords = (FT_Int)( sizeof ( t42_keywords ) / - sizeof ( t42_keywords[0] ) ); - - - parser->root.cursor = base; - parser->root.limit = base + size; - parser->root.error = T42_Err_Ok; - - limit = parser->root.limit; - - T1_Skip_Spaces( parser ); - - while ( parser->root.cursor < limit ) - { - FT_Byte* cur; - - - cur = parser->root.cursor; - - /* look for `FontDirectory' which causes problems for some fonts */ - if ( *cur == 'F' && cur + 25 < limit && - ft_strncmp( (char*)cur, "FontDirectory", 13 ) == 0 ) - { - FT_Byte* cur2; - - - /* skip the `FontDirectory' keyword */ - T1_Skip_PS_Token( parser ); - T1_Skip_Spaces ( parser ); - cur = cur2 = parser->root.cursor; - - /* look up the `known' keyword */ - while ( cur < limit ) - { - if ( *cur == 'k' && cur + 5 < limit && - ft_strncmp( (char*)cur, "known", 5 ) == 0 ) - break; - - T1_Skip_PS_Token( parser ); - if ( parser->root.error ) - goto Exit; - T1_Skip_Spaces ( parser ); - cur = parser->root.cursor; - } - - if ( cur < limit ) - { - T1_TokenRec token; - - - /* skip the `known' keyword and the token following it */ - T1_Skip_PS_Token( parser ); - T1_ToToken( parser, &token ); - - /* if the last token was an array, skip it! */ - if ( token.type == T1_TOKEN_TYPE_ARRAY ) - cur2 = parser->root.cursor; - } - parser->root.cursor = cur2; - } - - /* look for immediates */ - else if ( *cur == '/' && cur + 2 < limit ) - { - FT_PtrDist len; - - - cur++; - - parser->root.cursor = cur; - T1_Skip_PS_Token( parser ); - if ( parser->root.error ) - goto Exit; - - len = parser->root.cursor - cur; - - if ( len > 0 && len < 22 && parser->root.cursor < limit ) - { - int i; - - - /* now compare the immediate name to the keyword table */ - - /* loop through all known keywords */ - for ( i = 0; i < n_keywords; i++ ) - { - T1_Field keyword = (T1_Field)&t42_keywords[i]; - FT_Byte *name = (FT_Byte*)keyword->ident; - - - if ( !name ) - continue; - - if ( cur[0] == name[0] && - len == (FT_PtrDist)ft_strlen( (const char *)name ) && - ft_memcmp( cur, name, len ) == 0 ) - { - /* we found it -- run the parsing callback! */ - parser->root.error = t42_load_keyword( face, - loader, - keyword ); - if ( parser->root.error ) - return parser->root.error; - break; - } - } - } - } - else - { - T1_Skip_PS_Token( parser ); - if ( parser->root.error ) - goto Exit; - } - - T1_Skip_Spaces( parser ); - } - - Exit: - return parser->root.error; - } - - - FT_LOCAL_DEF( void ) - t42_loader_init( T42_Loader loader, - T42_Face face ) - { - FT_UNUSED( face ); - - FT_MEM_ZERO( loader, sizeof ( *loader ) ); - loader->num_glyphs = 0; - loader->num_chars = 0; - - /* initialize the tables -- simply set their `init' field to 0 */ - loader->encoding_table.init = 0; - loader->charstrings.init = 0; - loader->glyph_names.init = 0; - } - - - FT_LOCAL_DEF( void ) - t42_loader_done( T42_Loader loader ) - { - T42_Parser parser = &loader->parser; - - - /* finalize tables */ - T1_Release_Table( &loader->encoding_table ); - T1_Release_Table( &loader->charstrings ); - T1_Release_Table( &loader->glyph_names ); - T1_Release_Table( &loader->swap_table ); - - /* finalize parser */ - t42_parser_done( parser ); - } - - -/* END */