1 /***************************************************************************/
5 /* Type 1 font loader (body). */
7 /* Copyright 1996-2012 by */
8 /* David Turner, Robert Wilhelm, and Werner Lemberg. */
10 /* This file is part of the FreeType project, and may only be used, */
11 /* modified, and distributed under the terms of the FreeType project */
12 /* license, LICENSE.TXT. By continuing to use, modify, or distribute */
13 /* this file you indicate that you have read the license and */
14 /* understand and accept it fully. */
16 /***************************************************************************/
19 /*************************************************************************/
21 /* This is the new and improved Type 1 data loader for FreeType 2. The */
22 /* old loader has several problems: it is slow, complex, difficult to */
23 /* maintain, and contains incredible hacks to make it accept some */
24 /* ill-formed Type 1 fonts without hiccup-ing. Moreover, about 5% of */
25 /* the Type 1 fonts on my machine still aren't loaded correctly by it. */
27 /* This version is much simpler, much faster and also easier to read and */
28 /* maintain by a great order of magnitude. The idea behind it is to */
29 /* _not_ try to read the Type 1 token stream with a state machine (i.e. */
30 /* a Postscript-like interpreter) but rather to perform simple pattern */
33 /* Indeed, nearly all data definitions follow a simple pattern like */
35 /* ... /Field <data> ... */
37 /* where <data> can be a number, a boolean, a string, or an array of */
38 /* numbers. There are a few exceptions, namely the encoding, font name, */
39 /* charstrings, and subrs; they are handled with a special pattern */
40 /* matching routine. */
42 /* All other common cases are handled very simply. The matching rules */
43 /* are defined in the file `t1tokens.h' through the use of several */
44 /* macros calls PARSE_XXX. This file is included twice here; the first */
45 /* time to generate parsing callback functions, the second time to */
46 /* generate a table of keywords (with pointers to the associated */
47 /* callback functions). */
49 /* The function `parse_dict' simply scans *linearly* a given dictionary */
50 /* (either the top-level or private one) and calls the appropriate */
51 /* callback when it encounters an immediate keyword. */
53 /* This is by far the fastest way one can find to parse and read all */
56 /* This led to tremendous code size reduction. Note that later, the */
57 /* glyph loader will also be _greatly_ simplified, and the automatic */
58 /* hinter will replace the clumsy `t1hinter'. */
60 /*************************************************************************/
64 #include FT_INTERNAL_DEBUG_H
65 #include FT_CONFIG_CONFIG_H
66 #include FT_MULTIPLE_MASTERS_H
67 #include FT_INTERNAL_TYPE1_TYPES_H
68 #include FT_INTERNAL_CALC_H
74 /*************************************************************************/
76 /* The macro FT_COMPONENT is used in trace mode. It is an implicit */
77 /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */
78 /* messages during execution. */
81 #define FT_COMPONENT trace_t1load
84 #ifndef T1_CONFIG_OPTION_NO_MM_SUPPORT
87 /*************************************************************************/
88 /*************************************************************************/
90 /***** MULTIPLE MASTERS SUPPORT *****/
92 /*************************************************************************/
93 /*************************************************************************/
96 t1_allocate_blend( T1_Face face,
101 FT_Memory memory = face->root.memory;
102 FT_Error error = T1_Err_Ok;
108 if ( FT_NEW( blend ) )
111 blend->num_default_design_vector = 0;
116 /* allocate design data if needed */
117 if ( num_designs > 0 )
119 if ( blend->num_designs == 0 )
124 /* allocate the blend `private' and `font_info' dictionaries */
125 if ( FT_NEW_ARRAY( blend->font_infos[1], num_designs ) ||
126 FT_NEW_ARRAY( blend->privates[1], num_designs ) ||
127 FT_NEW_ARRAY( blend->bboxes[1], num_designs ) ||
128 FT_NEW_ARRAY( blend->weight_vector, num_designs * 2 ) )
131 blend->default_weight_vector = blend->weight_vector + num_designs;
133 blend->font_infos[0] = &face->type1.font_info;
134 blend->privates [0] = &face->type1.private_dict;
135 blend->bboxes [0] = &face->type1.font_bbox;
137 for ( nn = 2; nn <= num_designs; nn++ )
139 blend->privates[nn] = blend->privates [nn - 1] + 1;
140 blend->font_infos[nn] = blend->font_infos[nn - 1] + 1;
141 blend->bboxes[nn] = blend->bboxes [nn - 1] + 1;
144 blend->num_designs = num_designs;
146 else if ( blend->num_designs != num_designs )
150 /* allocate axis data if needed */
153 if ( blend->num_axis != 0 && blend->num_axis != num_axis )
156 blend->num_axis = num_axis;
159 /* allocate the blend design pos table if needed */
160 num_designs = blend->num_designs;
161 num_axis = blend->num_axis;
162 if ( num_designs && num_axis && blend->design_pos[0] == 0 )
167 if ( FT_NEW_ARRAY( blend->design_pos[0], num_designs * num_axis ) )
170 for ( n = 1; n < num_designs; n++ )
171 blend->design_pos[n] = blend->design_pos[0] + num_axis * n;
178 error = T1_Err_Invalid_File_Format;
183 FT_LOCAL_DEF( FT_Error )
184 T1_Get_Multi_Master( T1_Face face,
185 FT_Multi_Master* master )
187 PS_Blend blend = face->blend;
192 error = T1_Err_Invalid_Argument;
196 master->num_axis = blend->num_axis;
197 master->num_designs = blend->num_designs;
199 for ( n = 0; n < blend->num_axis; n++ )
201 FT_MM_Axis* axis = master->axis + n;
202 PS_DesignMap map = blend->design_map + n;
205 axis->name = blend->axis_names[n];
206 axis->minimum = map->design_points[0];
207 axis->maximum = map->design_points[map->num_points - 1];
217 /*************************************************************************/
219 /* Given a normalized (blend) coordinate, figure out the design */
220 /* coordinate appropriate for that value. */
222 FT_LOCAL_DEF( FT_Fixed )
223 mm_axis_unmap( PS_DesignMap axismap,
229 if ( ncv <= axismap->blend_points[0] )
230 return INT_TO_FIXED( axismap->design_points[0] );
232 for ( j = 1; j < axismap->num_points; ++j )
234 if ( ncv <= axismap->blend_points[j] )
236 FT_Fixed t = FT_MulDiv( ncv - axismap->blend_points[j - 1],
238 axismap->blend_points[j] -
239 axismap->blend_points[j - 1] );
241 return INT_TO_FIXED( axismap->design_points[j - 1] ) +
243 axismap->design_points[j] -
244 axismap->design_points[j - 1],
249 return INT_TO_FIXED( axismap->design_points[axismap->num_points - 1] );
253 /*************************************************************************/
255 /* Given a vector of weights, one for each design, figure out the */
256 /* normalized axis coordinates which gave rise to those weights. */
259 mm_weights_unmap( FT_Fixed* weights,
260 FT_Fixed* axiscoords,
263 FT_ASSERT( axis_count <= T1_MAX_MM_AXIS );
265 if ( axis_count == 1 )
266 axiscoords[0] = weights[1];
268 else if ( axis_count == 2 )
270 axiscoords[0] = weights[3] + weights[1];
271 axiscoords[1] = weights[3] + weights[2];
274 else if ( axis_count == 3 )
276 axiscoords[0] = weights[7] + weights[5] + weights[3] + weights[1];
277 axiscoords[1] = weights[7] + weights[6] + weights[3] + weights[2];
278 axiscoords[2] = weights[7] + weights[6] + weights[5] + weights[4];
283 axiscoords[0] = weights[15] + weights[13] + weights[11] + weights[9] +
284 weights[7] + weights[5] + weights[3] + weights[1];
285 axiscoords[1] = weights[15] + weights[14] + weights[11] + weights[10] +
286 weights[7] + weights[6] + weights[3] + weights[2];
287 axiscoords[2] = weights[15] + weights[14] + weights[13] + weights[12] +
288 weights[7] + weights[6] + weights[5] + weights[4];
289 axiscoords[3] = weights[15] + weights[14] + weights[13] + weights[12] +
290 weights[11] + weights[10] + weights[9] + weights[8];
295 /*************************************************************************/
297 /* Just a wrapper around T1_Get_Multi_Master to support the different */
298 /* arguments needed by the GX var distortable fonts. */
300 FT_LOCAL_DEF( FT_Error )
301 T1_Get_MM_Var( T1_Face face,
304 FT_Memory memory = face->root.memory;
305 FT_MM_Var *mmvar = NULL;
306 FT_Multi_Master mmaster;
309 FT_Fixed axiscoords[T1_MAX_MM_AXIS];
310 PS_Blend blend = face->blend;
313 error = T1_Get_Multi_Master( face, &mmaster );
316 if ( FT_ALLOC( mmvar,
317 sizeof ( FT_MM_Var ) +
318 mmaster.num_axis * sizeof ( FT_Var_Axis ) ) )
321 mmvar->num_axis = mmaster.num_axis;
322 mmvar->num_designs = mmaster.num_designs;
323 mmvar->num_namedstyles = (FT_UInt)-1; /* Does not apply */
324 mmvar->axis = (FT_Var_Axis*)&mmvar[1];
325 /* Point to axes after MM_Var struct */
326 mmvar->namedstyle = NULL;
328 for ( i = 0 ; i < mmaster.num_axis; ++i )
330 mmvar->axis[i].name = mmaster.axis[i].name;
331 mmvar->axis[i].minimum = INT_TO_FIXED( mmaster.axis[i].minimum);
332 mmvar->axis[i].maximum = INT_TO_FIXED( mmaster.axis[i].maximum);
333 mmvar->axis[i].def = ( mmvar->axis[i].minimum +
334 mmvar->axis[i].maximum ) / 2;
335 /* Does not apply. But this value is in range */
336 mmvar->axis[i].strid = (FT_UInt)-1; /* Does not apply */
337 mmvar->axis[i].tag = (FT_ULong)-1; /* Does not apply */
339 if ( ft_strcmp( mmvar->axis[i].name, "Weight" ) == 0 )
340 mmvar->axis[i].tag = FT_MAKE_TAG( 'w', 'g', 'h', 't' );
341 else if ( ft_strcmp( mmvar->axis[i].name, "Width" ) == 0 )
342 mmvar->axis[i].tag = FT_MAKE_TAG( 'w', 'd', 't', 'h' );
343 else if ( ft_strcmp( mmvar->axis[i].name, "OpticalSize" ) == 0 )
344 mmvar->axis[i].tag = FT_MAKE_TAG( 'o', 'p', 's', 'z' );
347 if ( blend->num_designs == ( 1U << blend->num_axis ) )
349 mm_weights_unmap( blend->default_weight_vector,
353 for ( i = 0; i < mmaster.num_axis; ++i )
354 mmvar->axis[i].def = mm_axis_unmap( &blend->design_map[i],
365 FT_LOCAL_DEF( FT_Error )
366 T1_Set_MM_Blend( T1_Face face,
370 PS_Blend blend = face->blend;
375 error = T1_Err_Invalid_Argument;
377 if ( blend && blend->num_axis == num_coords )
379 /* recompute the weight vector from the blend coordinates */
382 for ( n = 0; n < blend->num_designs; n++ )
384 FT_Fixed result = 0x10000L; /* 1.0 fixed */
387 for ( m = 0; m < blend->num_axis; m++ )
392 /* get current blend axis position */
394 if ( factor < 0 ) factor = 0;
395 if ( factor > 0x10000L ) factor = 0x10000L;
397 if ( ( n & ( 1 << m ) ) == 0 )
398 factor = 0x10000L - factor;
400 result = FT_MulFix( result, factor );
402 blend->weight_vector[n] = result;
412 FT_LOCAL_DEF( FT_Error )
413 T1_Set_MM_Design( T1_Face face,
417 PS_Blend blend = face->blend;
422 error = T1_Err_Invalid_Argument;
423 if ( blend && blend->num_axis == num_coords )
425 /* compute the blend coordinates through the blend design map */
426 FT_Fixed final_blends[T1_MAX_MM_DESIGNS];
429 for ( n = 0; n < blend->num_axis; n++ )
431 FT_Long design = coords[n];
433 PS_DesignMap map = blend->design_map + n;
434 FT_Long* designs = map->design_points;
435 FT_Fixed* blends = map->blend_points;
436 FT_Int before = -1, after = -1;
439 for ( p = 0; p < (FT_UInt)map->num_points; p++ )
441 FT_Long p_design = designs[p];
445 if ( design == p_design )
447 the_blend = blends[p];
451 if ( design < p_design )
460 /* now interpolate if necessary */
462 the_blend = blends[0];
464 else if ( after < 0 )
465 the_blend = blends[map->num_points - 1];
468 the_blend = FT_MulDiv( design - designs[before],
469 blends [after] - blends [before],
470 designs[after] - designs[before] );
473 final_blends[n] = the_blend;
476 error = T1_Set_MM_Blend( face, num_coords, final_blends );
483 /*************************************************************************/
485 /* Just a wrapper around T1_Set_MM_Design to support the different */
486 /* arguments needed by the GX var distortable fonts. */
488 FT_LOCAL_DEF( FT_Error )
489 T1_Set_Var_Design( T1_Face face,
493 FT_Long lcoords[4]; /* maximum axis count is 4 */
498 error = T1_Err_Invalid_Argument;
499 if ( num_coords <= 4 && num_coords > 0 )
501 for ( i = 0; i < num_coords; ++i )
502 lcoords[i] = FIXED_TO_INT( coords[i] );
503 error = T1_Set_MM_Design( face, num_coords, lcoords );
511 T1_Done_Blend( T1_Face face )
513 FT_Memory memory = face->root.memory;
514 PS_Blend blend = face->blend;
519 FT_UInt num_designs = blend->num_designs;
520 FT_UInt num_axis = blend->num_axis;
524 /* release design pos table */
525 FT_FREE( blend->design_pos[0] );
526 for ( n = 1; n < num_designs; n++ )
527 blend->design_pos[n] = 0;
529 /* release blend `private' and `font info' dictionaries */
530 FT_FREE( blend->privates[1] );
531 FT_FREE( blend->font_infos[1] );
532 FT_FREE( blend->bboxes[1] );
534 for ( n = 0; n < num_designs; n++ )
536 blend->privates [n] = 0;
537 blend->font_infos[n] = 0;
538 blend->bboxes [n] = 0;
541 /* release weight vectors */
542 FT_FREE( blend->weight_vector );
543 blend->default_weight_vector = 0;
545 /* release axis names */
546 for ( n = 0; n < num_axis; n++ )
547 FT_FREE( blend->axis_names[n] );
549 /* release design map */
550 for ( n = 0; n < num_axis; n++ )
552 PS_DesignMap dmap = blend->design_map + n;
555 FT_FREE( dmap->design_points );
556 dmap->num_points = 0;
559 FT_FREE( face->blend );
565 parse_blend_axis_types( T1_Face face,
568 T1_TokenRec axis_tokens[T1_MAX_MM_AXIS];
570 FT_Error error = T1_Err_Ok;
575 /* take an array of objects */
576 T1_ToTokenArray( &loader->parser, axis_tokens,
577 T1_MAX_MM_AXIS, &num_axis );
580 error = T1_Err_Ignore;
583 if ( num_axis == 0 || num_axis > T1_MAX_MM_AXIS )
585 FT_ERROR(( "parse_blend_axis_types: incorrect number of axes: %d\n",
587 error = T1_Err_Invalid_File_Format;
591 /* allocate blend if necessary */
592 error = t1_allocate_blend( face, 0, (FT_UInt)num_axis );
597 memory = face->root.memory;
599 /* each token is an immediate containing the name of the axis */
600 for ( n = 0; n < num_axis; n++ )
602 T1_Token token = axis_tokens + n;
607 /* skip first slash, if any */
608 if ( token->start[0] == '/' )
611 len = token->limit - token->start;
614 error = T1_Err_Invalid_File_Format;
618 if ( FT_ALLOC( blend->axis_names[n], len + 1 ) )
621 name = (FT_Byte*)blend->axis_names[n];
622 FT_MEM_COPY( name, token->start, len );
627 loader->parser.root.error = error;
632 parse_blend_design_positions( T1_Face face,
635 T1_TokenRec design_tokens[T1_MAX_MM_DESIGNS];
638 T1_Parser parser = &loader->parser;
640 FT_Error error = T1_Err_Ok;
644 /* get the array of design tokens -- compute number of designs */
645 T1_ToTokenArray( parser, design_tokens,
646 T1_MAX_MM_DESIGNS, &num_designs );
647 if ( num_designs < 0 )
649 error = T1_Err_Ignore;
652 if ( num_designs == 0 || num_designs > T1_MAX_MM_DESIGNS )
654 FT_ERROR(( "parse_blend_design_positions:"
655 " incorrect number of designs: %d\n",
657 error = T1_Err_Invalid_File_Format;
662 FT_Byte* old_cursor = parser->root.cursor;
663 FT_Byte* old_limit = parser->root.limit;
668 num_axis = 0; /* make compiler happy */
670 for ( n = 0; n < num_designs; n++ )
672 T1_TokenRec axis_tokens[T1_MAX_MM_AXIS];
677 /* read axis/coordinates tokens */
678 token = design_tokens + n;
679 parser->root.cursor = token->start;
680 parser->root.limit = token->limit;
681 T1_ToTokenArray( parser, axis_tokens, T1_MAX_MM_AXIS, &n_axis );
685 if ( n_axis <= 0 || n_axis > T1_MAX_MM_AXIS )
687 FT_ERROR(( "parse_blend_design_positions:"
688 " invalid number of axes: %d\n",
690 error = T1_Err_Invalid_File_Format;
695 error = t1_allocate_blend( face, num_designs, num_axis );
700 else if ( n_axis != num_axis )
702 FT_ERROR(( "parse_blend_design_positions: incorrect table\n" ));
703 error = T1_Err_Invalid_File_Format;
707 /* now read each axis token into the design position */
708 for ( axis = 0; axis < n_axis; axis++ )
710 T1_Token token2 = axis_tokens + axis;
713 parser->root.cursor = token2->start;
714 parser->root.limit = token2->limit;
715 blend->design_pos[n][axis] = T1_ToFixed( parser, 0 );
719 loader->parser.root.cursor = old_cursor;
720 loader->parser.root.limit = old_limit;
724 loader->parser.root.error = error;
729 parse_blend_design_map( T1_Face face,
732 FT_Error error = T1_Err_Ok;
733 T1_Parser parser = &loader->parser;
735 T1_TokenRec axis_tokens[T1_MAX_MM_AXIS];
739 FT_Memory memory = face->root.memory;
742 T1_ToTokenArray( parser, axis_tokens,
743 T1_MAX_MM_AXIS, &num_axis );
746 error = T1_Err_Ignore;
749 if ( num_axis == 0 || num_axis > T1_MAX_MM_AXIS )
751 FT_ERROR(( "parse_blend_design_map: incorrect number of axes: %d\n",
753 error = T1_Err_Invalid_File_Format;
757 old_cursor = parser->root.cursor;
758 old_limit = parser->root.limit;
760 error = t1_allocate_blend( face, 0, num_axis );
765 /* now read each axis design map */
766 for ( n = 0; n < num_axis; n++ )
768 PS_DesignMap map = blend->design_map + n;
770 T1_TokenRec point_tokens[T1_MAX_MM_MAP_POINTS];
771 FT_Int p, num_points;
774 axis_token = axis_tokens + n;
776 parser->root.cursor = axis_token->start;
777 parser->root.limit = axis_token->limit;
778 T1_ToTokenArray( parser, point_tokens,
779 T1_MAX_MM_MAP_POINTS, &num_points );
781 if ( num_points <= 0 || num_points > T1_MAX_MM_MAP_POINTS )
783 FT_ERROR(( "parse_blend_design_map: incorrect table\n" ));
784 error = T1_Err_Invalid_File_Format;
788 /* allocate design map data */
789 if ( FT_NEW_ARRAY( map->design_points, num_points * 2 ) )
791 map->blend_points = map->design_points + num_points;
792 map->num_points = (FT_Byte)num_points;
794 for ( p = 0; p < num_points; p++ )
796 T1_Token point_token;
799 point_token = point_tokens + p;
801 /* don't include delimiting brackets */
802 parser->root.cursor = point_token->start + 1;
803 parser->root.limit = point_token->limit - 1;
805 map->design_points[p] = T1_ToInt( parser );
806 map->blend_points [p] = T1_ToFixed( parser, 0 );
810 parser->root.cursor = old_cursor;
811 parser->root.limit = old_limit;
814 parser->root.error = error;
819 parse_weight_vector( T1_Face face,
822 T1_TokenRec design_tokens[T1_MAX_MM_DESIGNS];
824 FT_Error error = T1_Err_Ok;
825 T1_Parser parser = &loader->parser;
826 PS_Blend blend = face->blend;
833 T1_ToTokenArray( parser, design_tokens,
834 T1_MAX_MM_DESIGNS, &num_designs );
835 if ( num_designs < 0 )
837 error = T1_Err_Ignore;
840 if ( num_designs == 0 || num_designs > T1_MAX_MM_DESIGNS )
842 FT_ERROR(( "parse_weight_vector:"
843 " incorrect number of designs: %d\n",
845 error = T1_Err_Invalid_File_Format;
849 if ( !blend || !blend->num_designs )
851 error = t1_allocate_blend( face, num_designs, 0 );
856 else if ( blend->num_designs != (FT_UInt)num_designs )
858 FT_ERROR(( "parse_weight_vector:"
859 " /BlendDesignPosition and /WeightVector have\n"
861 " different number of elements\n" ));
862 error = T1_Err_Invalid_File_Format;
866 old_cursor = parser->root.cursor;
867 old_limit = parser->root.limit;
869 for ( n = 0; n < num_designs; n++ )
871 token = design_tokens + n;
872 parser->root.cursor = token->start;
873 parser->root.limit = token->limit;
875 blend->default_weight_vector[n] =
876 blend->weight_vector[n] = T1_ToFixed( parser, 0 );
879 parser->root.cursor = old_cursor;
880 parser->root.limit = old_limit;
883 parser->root.error = error;
887 /* e.g., /BuildCharArray [0 0 0 0 0 0 0 0] def */
888 /* we're only interested in the number of array elements */
890 parse_buildchar( T1_Face face,
893 face->len_buildchar = T1_ToFixedArray( &loader->parser, 0, NULL, 0 );
899 #endif /* !T1_CONFIG_OPTION_NO_MM_SUPPORT */
904 /*************************************************************************/
905 /*************************************************************************/
907 /***** TYPE 1 SYMBOL PARSING *****/
909 /*************************************************************************/
910 /*************************************************************************/
913 t1_load_keyword( T1_Face face,
915 const T1_Field field )
921 PS_Blend blend = face->blend;
924 if ( blend && blend->num_designs == 0 )
927 /* if the keyword has a dedicated callback, call it */
928 if ( field->type == T1_FIELD_TYPE_CALLBACK )
930 field->reader( (FT_Face)face, loader );
931 error = loader->parser.root.error;
935 /* now, the keyword is either a simple field, or a table of fields; */
936 /* we are now going to take care of it */
937 switch ( field->location )
939 case T1_FIELD_LOCATION_FONT_INFO:
940 dummy_object = &face->type1.font_info;
941 objects = &dummy_object;
946 objects = (void**)blend->font_infos;
947 max_objects = blend->num_designs;
951 case T1_FIELD_LOCATION_FONT_EXTRA:
952 dummy_object = &face->type1.font_extra;
953 objects = &dummy_object;
957 case T1_FIELD_LOCATION_PRIVATE:
958 dummy_object = &face->type1.private_dict;
959 objects = &dummy_object;
964 objects = (void**)blend->privates;
965 max_objects = blend->num_designs;
969 case T1_FIELD_LOCATION_BBOX:
970 dummy_object = &face->type1.font_bbox;
971 objects = &dummy_object;
976 objects = (void**)blend->bboxes;
977 max_objects = blend->num_designs;
981 case T1_FIELD_LOCATION_LOADER:
982 dummy_object = loader;
983 objects = &dummy_object;
987 case T1_FIELD_LOCATION_FACE:
989 objects = &dummy_object;
993 #ifndef T1_CONFIG_OPTION_NO_MM_SUPPORT
994 case T1_FIELD_LOCATION_BLEND:
995 dummy_object = face->blend;
996 objects = &dummy_object;
1002 dummy_object = &face->type1;
1003 objects = &dummy_object;
1007 if ( field->type == T1_FIELD_TYPE_INTEGER_ARRAY ||
1008 field->type == T1_FIELD_TYPE_FIXED_ARRAY )
1009 error = T1_Load_Field_Table( &loader->parser, field,
1010 objects, max_objects, 0 );
1012 error = T1_Load_Field( &loader->parser, field,
1013 objects, max_objects, 0 );
1021 parse_private( T1_Face face,
1026 loader->keywords_encountered |= T1_PRIVATE;
1031 read_binary_data( T1_Parser parser,
1036 FT_Byte* limit = parser->root.limit;
1039 /* the binary data has one of the following formats */
1041 /* `size' [white*] RD white ....... ND */
1042 /* `size' [white*] -| white ....... |- */
1045 T1_Skip_Spaces( parser );
1047 cur = parser->root.cursor;
1049 if ( cur < limit && ft_isdigit( *cur ) )
1051 FT_Long s = T1_ToInt( parser );
1054 T1_Skip_PS_Token( parser ); /* `RD' or `-|' or something else */
1056 /* there is only one whitespace char after the */
1057 /* `RD' or `-|' token */
1058 *base = parser->root.cursor + 1;
1060 if ( s >= 0 && s < limit - *base )
1062 parser->root.cursor += s + 1;
1064 return !parser->root.error;
1068 FT_ERROR(( "read_binary_data: invalid size field\n" ));
1069 parser->root.error = T1_Err_Invalid_File_Format;
1074 /* We now define the routines to handle the `/Encoding', `/Subrs', */
1075 /* and `/CharStrings' dictionaries. */
1078 t1_parse_font_matrix( T1_Face face,
1081 T1_Parser parser = &loader->parser;
1082 FT_Matrix* matrix = &face->type1.font_matrix;
1083 FT_Vector* offset = &face->type1.font_offset;
1084 FT_Face root = (FT_Face)&face->root;
1086 FT_Fixed temp_scale;
1090 result = T1_ToFixedArray( parser, 6, temp, 3 );
1094 parser->root.error = T1_Err_Invalid_File_Format;
1098 temp_scale = FT_ABS( temp[3] );
1100 if ( temp_scale == 0 )
1102 FT_ERROR(( "t1_parse_font_matrix: invalid font matrix\n" ));
1103 parser->root.error = T1_Err_Invalid_File_Format;
1107 /* Set Units per EM based on FontMatrix values. We set the value to */
1108 /* 1000 / temp_scale, because temp_scale was already multiplied by */
1109 /* 1000 (in t1_tofixed, from psobjs.c). */
1111 root->units_per_EM = (FT_UShort)( FT_DivFix( 1000 * 0x10000L,
1112 temp_scale ) >> 16 );
1114 /* we need to scale the values by 1.0/temp_scale */
1115 if ( temp_scale != 0x10000L )
1117 temp[0] = FT_DivFix( temp[0], temp_scale );
1118 temp[1] = FT_DivFix( temp[1], temp_scale );
1119 temp[2] = FT_DivFix( temp[2], temp_scale );
1120 temp[4] = FT_DivFix( temp[4], temp_scale );
1121 temp[5] = FT_DivFix( temp[5], temp_scale );
1122 temp[3] = temp[3] < 0 ? -0x10000L : 0x10000L;
1125 matrix->xx = temp[0];
1126 matrix->yx = temp[1];
1127 matrix->xy = temp[2];
1128 matrix->yy = temp[3];
1130 /* note that the offsets must be expressed in integer font units */
1131 offset->x = temp[4] >> 16;
1132 offset->y = temp[5] >> 16;
1137 parse_encoding( T1_Face face,
1140 T1_Parser parser = &loader->parser;
1142 FT_Byte* limit = parser->root.limit;
1144 PSAux_Service psaux = (PSAux_Service)face->psaux;
1147 T1_Skip_Spaces( parser );
1148 cur = parser->root.cursor;
1151 FT_ERROR(( "parse_encoding: out of bounds\n" ));
1152 parser->root.error = T1_Err_Invalid_File_Format;
1156 /* if we have a number or `[', the encoding is an array, */
1157 /* and we must load it now */
1158 if ( ft_isdigit( *cur ) || *cur == '[' )
1160 T1_Encoding encode = &face->type1.encoding;
1162 PS_Table char_table = &loader->encoding_table;
1163 FT_Memory memory = parser->root.memory;
1165 FT_Bool only_immediates = 0;
1168 /* read the number of entries in the encoding; should be 256 */
1172 only_immediates = 1;
1173 parser->root.cursor++;
1176 count = (FT_Int)T1_ToInt( parser );
1178 T1_Skip_Spaces( parser );
1179 if ( parser->root.cursor >= limit )
1182 /* we use a T1_Table to store our charnames */
1183 loader->num_chars = encode->num_chars = count;
1184 if ( FT_NEW_ARRAY( encode->char_index, count ) ||
1185 FT_NEW_ARRAY( encode->char_name, count ) ||
1186 FT_SET_ERROR( psaux->ps_table_funcs->init(
1187 char_table, count, memory ) ) )
1189 parser->root.error = error;
1193 /* We need to `zero' out encoding_table.elements */
1194 for ( n = 0; n < count; n++ )
1196 char* notdef = (char *)".notdef";
1199 T1_Add_Table( char_table, n, notdef, 8 );
1202 /* Now we need to read records of the form */
1204 /* ... charcode /charname ... */
1206 /* for each entry in our table. */
1208 /* We simply look for a number followed by an immediate */
1209 /* name. Note that this ignores correctly the sequence */
1210 /* that is often seen in type1 fonts: */
1212 /* 0 1 255 { 1 index exch /.notdef put } for dup */
1214 /* used to clean the encoding array before anything else. */
1216 /* Alternatively, if the array is directly given as */
1218 /* /Encoding [ ... ] */
1220 /* we only read immediates. */
1223 T1_Skip_Spaces( parser );
1225 while ( parser->root.cursor < limit )
1227 cur = parser->root.cursor;
1229 /* we stop when we encounter a `def' or `]' */
1230 if ( *cur == 'd' && cur + 3 < limit )
1232 if ( cur[1] == 'e' &&
1234 IS_PS_DELIM( cur[3] ) )
1236 FT_TRACE6(( "encoding end\n" ));
1243 FT_TRACE6(( "encoding end\n" ));
1248 /* check whether we've found an entry */
1249 if ( ft_isdigit( *cur ) || only_immediates )
1254 if ( only_immediates )
1258 charcode = (FT_Int)T1_ToInt( parser );
1259 T1_Skip_Spaces( parser );
1262 cur = parser->root.cursor;
1264 if ( *cur == '/' && cur + 2 < limit && n < count )
1271 parser->root.cursor = cur;
1272 T1_Skip_PS_Token( parser );
1273 if ( parser->root.error )
1276 len = parser->root.cursor - cur;
1278 parser->root.error = T1_Add_Table( char_table, charcode,
1280 if ( parser->root.error )
1282 char_table->elements[charcode][len] = '\0';
1286 else if ( only_immediates )
1288 /* Since the current position is not updated for */
1289 /* immediates-only mode we would get an infinite loop if */
1290 /* we don't do anything here. */
1292 /* This encoding array is not valid according to the type1 */
1293 /* specification (it might be an encoding for a CID type1 */
1294 /* font, however), so we conclude that this font is NOT a */
1296 parser->root.error = FT_Err_Unknown_File_Format;
1302 T1_Skip_PS_Token( parser );
1303 if ( parser->root.error )
1307 T1_Skip_Spaces( parser );
1310 face->type1.encoding_type = T1_ENCODING_TYPE_ARRAY;
1311 parser->root.cursor = cur;
1314 /* Otherwise, we should have either `StandardEncoding', */
1315 /* `ExpertEncoding', or `ISOLatin1Encoding' */
1318 if ( cur + 17 < limit &&
1319 ft_strncmp( (const char*)cur, "StandardEncoding", 16 ) == 0 )
1320 face->type1.encoding_type = T1_ENCODING_TYPE_STANDARD;
1322 else if ( cur + 15 < limit &&
1323 ft_strncmp( (const char*)cur, "ExpertEncoding", 14 ) == 0 )
1324 face->type1.encoding_type = T1_ENCODING_TYPE_EXPERT;
1326 else if ( cur + 18 < limit &&
1327 ft_strncmp( (const char*)cur, "ISOLatin1Encoding", 17 ) == 0 )
1328 face->type1.encoding_type = T1_ENCODING_TYPE_ISOLATIN1;
1331 parser->root.error = T1_Err_Ignore;
1337 parse_subrs( T1_Face face,
1340 T1_Parser parser = &loader->parser;
1341 PS_Table table = &loader->subrs;
1342 FT_Memory memory = parser->root.memory;
1346 PSAux_Service psaux = (PSAux_Service)face->psaux;
1349 T1_Skip_Spaces( parser );
1351 /* test for empty array */
1352 if ( parser->root.cursor < parser->root.limit &&
1353 *parser->root.cursor == '[' )
1355 T1_Skip_PS_Token( parser );
1356 T1_Skip_Spaces ( parser );
1357 if ( parser->root.cursor >= parser->root.limit ||
1358 *parser->root.cursor != ']' )
1359 parser->root.error = T1_Err_Invalid_File_Format;
1363 num_subrs = (FT_Int)T1_ToInt( parser );
1365 /* position the parser right before the `dup' of the first subr */
1366 T1_Skip_PS_Token( parser ); /* `array' */
1367 if ( parser->root.error )
1369 T1_Skip_Spaces( parser );
1371 /* initialize subrs array -- with synthetic fonts it is possible */
1372 /* we get here twice */
1373 if ( !loader->num_subrs )
1375 error = psaux->ps_table_funcs->init( table, num_subrs, memory );
1380 /* the format is simple: */
1382 /* `index' + binary data */
1390 /* If the next token isn't `dup' we are done. */
1391 if ( parser->root.cursor + 4 < parser->root.limit &&
1392 ft_strncmp( (char*)parser->root.cursor, "dup", 3 ) != 0 )
1395 T1_Skip_PS_Token( parser ); /* `dup' */
1397 idx = T1_ToInt( parser );
1399 if ( !read_binary_data( parser, &size, &base ) )
1402 /* The binary string is followed by one token, e.g. `NP' */
1403 /* (bound to `noaccess put') or by two separate tokens: */
1404 /* `noaccess' & `put'. We position the parser right */
1405 /* before the next `dup', if any. */
1406 T1_Skip_PS_Token( parser ); /* `NP' or `|' or `noaccess' */
1407 if ( parser->root.error )
1409 T1_Skip_Spaces ( parser );
1411 if ( parser->root.cursor + 4 < parser->root.limit &&
1412 ft_strncmp( (char*)parser->root.cursor, "put", 3 ) == 0 )
1414 T1_Skip_PS_Token( parser ); /* skip `put' */
1415 T1_Skip_Spaces ( parser );
1418 /* with synthetic fonts it is possible we get here twice */
1419 if ( loader->num_subrs )
1422 /* some fonts use a value of -1 for lenIV to indicate that */
1423 /* the charstrings are unencoded */
1425 /* thanks to Tom Kacvinsky for pointing this out */
1427 if ( face->type1.private_dict.lenIV >= 0 )
1432 /* some fonts define empty subr records -- this is not totally */
1433 /* compliant to the specification (which says they should at */
1434 /* least contain a `return'), but we support them anyway */
1435 if ( size < face->type1.private_dict.lenIV )
1437 error = T1_Err_Invalid_File_Format;
1441 /* t1_decrypt() shouldn't write to base -- make temporary copy */
1442 if ( FT_ALLOC( temp, size ) )
1444 FT_MEM_COPY( temp, base, size );
1445 psaux->t1_decrypt( temp, size, 4330 );
1446 size -= face->type1.private_dict.lenIV;
1447 error = T1_Add_Table( table, (FT_Int)idx,
1448 temp + face->type1.private_dict.lenIV, size );
1452 error = T1_Add_Table( table, (FT_Int)idx, base, size );
1457 if ( !loader->num_subrs )
1458 loader->num_subrs = num_subrs;
1463 parser->root.error = error;
1467 #define TABLE_EXTEND 5
1471 parse_charstrings( T1_Face face,
1474 T1_Parser parser = &loader->parser;
1475 PS_Table code_table = &loader->charstrings;
1476 PS_Table name_table = &loader->glyph_names;
1477 PS_Table swap_table = &loader->swap_table;
1478 FT_Memory memory = parser->root.memory;
1481 PSAux_Service psaux = (PSAux_Service)face->psaux;
1484 FT_Byte* limit = parser->root.limit;
1485 FT_Int n, num_glyphs;
1486 FT_UInt notdef_index = 0;
1487 FT_Byte notdef_found = 0;
1490 num_glyphs = (FT_Int)T1_ToInt( parser );
1491 /* some fonts like Optima-Oblique not only define the /CharStrings */
1492 /* array but access it also */
1493 if ( num_glyphs == 0 || parser->root.error )
1496 /* initialize tables, leaving space for addition of .notdef, */
1497 /* if necessary, and a few other glyphs to handle buggy */
1498 /* fonts which have more glyphs than specified. */
1500 /* for some non-standard fonts like `Optima' which provides */
1501 /* different outlines depending on the resolution it is */
1502 /* possible to get here twice */
1503 if ( !loader->num_glyphs )
1505 error = psaux->ps_table_funcs->init(
1506 code_table, num_glyphs + 1 + TABLE_EXTEND, memory );
1510 error = psaux->ps_table_funcs->init(
1511 name_table, num_glyphs + 1 + TABLE_EXTEND, memory );
1515 /* Initialize table for swapping index notdef_index and */
1516 /* index 0 names and codes (if necessary). */
1518 error = psaux->ps_table_funcs->init( swap_table, 4, memory );
1531 /* the format is simple: */
1532 /* `/glyphname' + binary data */
1534 T1_Skip_Spaces( parser );
1536 cur = parser->root.cursor;
1540 /* we stop when we find a `def' or `end' keyword */
1541 if ( cur + 3 < limit && IS_PS_DELIM( cur[3] ) )
1543 if ( cur[0] == 'd' &&
1547 /* There are fonts which have this: */
1549 /* /CharStrings 118 dict def */
1551 /* CharStrings begin */
1554 /* To catch this we ignore `def' if */
1555 /* no charstring has actually been */
1561 if ( cur[0] == 'e' &&
1567 T1_Skip_PS_Token( parser );
1568 if ( parser->root.error )
1576 if ( cur + 1 >= limit )
1578 error = T1_Err_Invalid_File_Format;
1582 cur++; /* skip `/' */
1583 len = parser->root.cursor - cur;
1585 if ( !read_binary_data( parser, &size, &base ) )
1588 /* for some non-standard fonts like `Optima' which provides */
1589 /* different outlines depending on the resolution it is */
1590 /* possible to get here twice */
1591 if ( loader->num_glyphs )
1594 error = T1_Add_Table( name_table, n, cur, len + 1 );
1598 /* add a trailing zero to the name table */
1599 name_table->elements[n][len] = '\0';
1601 /* record index of /.notdef */
1603 ft_strcmp( ".notdef",
1604 (const char*)(name_table->elements[n]) ) == 0 )
1610 if ( face->type1.private_dict.lenIV >= 0 &&
1611 n < num_glyphs + TABLE_EXTEND )
1616 if ( size <= face->type1.private_dict.lenIV )
1618 error = T1_Err_Invalid_File_Format;
1622 /* t1_decrypt() shouldn't write to base -- make temporary copy */
1623 if ( FT_ALLOC( temp, size ) )
1625 FT_MEM_COPY( temp, base, size );
1626 psaux->t1_decrypt( temp, size, 4330 );
1627 size -= face->type1.private_dict.lenIV;
1628 error = T1_Add_Table( code_table, n,
1629 temp + face->type1.private_dict.lenIV, size );
1633 error = T1_Add_Table( code_table, n, base, size );
1641 loader->num_glyphs = n;
1643 /* if /.notdef is found but does not occupy index 0, do our magic. */
1644 if ( notdef_found &&
1645 ft_strcmp( ".notdef", (const char*)name_table->elements[0] ) )
1647 /* Swap glyph in index 0 with /.notdef glyph. First, add index 0 */
1648 /* name and code entries to swap_table. Then place notdef_index */
1649 /* name and code entries into swap_table. Then swap name and code */
1650 /* entries at indices notdef_index and 0 using values stored in */
1654 error = T1_Add_Table( swap_table, 0,
1655 name_table->elements[0],
1656 name_table->lengths [0] );
1661 error = T1_Add_Table( swap_table, 1,
1662 code_table->elements[0],
1663 code_table->lengths [0] );
1667 /* Index notdef_index name */
1668 error = T1_Add_Table( swap_table, 2,
1669 name_table->elements[notdef_index],
1670 name_table->lengths [notdef_index] );
1674 /* Index notdef_index code */
1675 error = T1_Add_Table( swap_table, 3,
1676 code_table->elements[notdef_index],
1677 code_table->lengths [notdef_index] );
1681 error = T1_Add_Table( name_table, notdef_index,
1682 swap_table->elements[0],
1683 swap_table->lengths [0] );
1687 error = T1_Add_Table( code_table, notdef_index,
1688 swap_table->elements[1],
1689 swap_table->lengths [1] );
1693 error = T1_Add_Table( name_table, 0,
1694 swap_table->elements[2],
1695 swap_table->lengths [2] );
1699 error = T1_Add_Table( code_table, 0,
1700 swap_table->elements[3],
1701 swap_table->lengths [3] );
1706 else if ( !notdef_found )
1708 /* notdef_index is already 0, or /.notdef is undefined in */
1709 /* charstrings dictionary. Worry about /.notdef undefined. */
1710 /* We take index 0 and add it to the end of the table(s) */
1711 /* and add our own /.notdef glyph to index 0. */
1713 /* 0 333 hsbw endchar */
1714 FT_Byte notdef_glyph[] = { 0x8B, 0xF7, 0xE1, 0x0D, 0x0E };
1715 char* notdef_name = (char *)".notdef";
1718 error = T1_Add_Table( swap_table, 0,
1719 name_table->elements[0],
1720 name_table->lengths [0] );
1724 error = T1_Add_Table( swap_table, 1,
1725 code_table->elements[0],
1726 code_table->lengths [0] );
1730 error = T1_Add_Table( name_table, 0, notdef_name, 8 );
1734 error = T1_Add_Table( code_table, 0, notdef_glyph, 5 );
1739 error = T1_Add_Table( name_table, n,
1740 swap_table->elements[0],
1741 swap_table->lengths [0] );
1745 error = T1_Add_Table( code_table, n,
1746 swap_table->elements[1],
1747 swap_table->lengths [1] );
1751 /* we added a glyph. */
1752 loader->num_glyphs += 1;
1758 parser->root.error = error;
1762 /*************************************************************************/
1764 /* Define the token field static variables. This is a set of */
1765 /* T1_FieldRec variables. */
1767 /*************************************************************************/
1771 const T1_FieldRec t1_keywords[] =
1774 #include "t1tokens.h"
1776 /* now add the special functions... */
1777 T1_FIELD_CALLBACK( "FontMatrix", t1_parse_font_matrix,
1778 T1_FIELD_DICT_FONTDICT )
1779 T1_FIELD_CALLBACK( "Encoding", parse_encoding,
1780 T1_FIELD_DICT_FONTDICT )
1781 T1_FIELD_CALLBACK( "Subrs", parse_subrs,
1782 T1_FIELD_DICT_PRIVATE )
1783 T1_FIELD_CALLBACK( "CharStrings", parse_charstrings,
1784 T1_FIELD_DICT_PRIVATE )
1785 T1_FIELD_CALLBACK( "Private", parse_private,
1786 T1_FIELD_DICT_FONTDICT )
1788 #ifndef T1_CONFIG_OPTION_NO_MM_SUPPORT
1789 T1_FIELD_CALLBACK( "BlendDesignPositions", parse_blend_design_positions,
1790 T1_FIELD_DICT_FONTDICT )
1791 T1_FIELD_CALLBACK( "BlendDesignMap", parse_blend_design_map,
1792 T1_FIELD_DICT_FONTDICT )
1793 T1_FIELD_CALLBACK( "BlendAxisTypes", parse_blend_axis_types,
1794 T1_FIELD_DICT_FONTDICT )
1795 T1_FIELD_CALLBACK( "WeightVector", parse_weight_vector,
1796 T1_FIELD_DICT_FONTDICT )
1797 T1_FIELD_CALLBACK( "BuildCharArray", parse_buildchar,
1798 T1_FIELD_DICT_PRIVATE )
1801 { 0, T1_FIELD_LOCATION_CID_INFO, T1_FIELD_TYPE_NONE, 0, 0, 0, 0, 0, 0 }
1805 #define T1_FIELD_COUNT \
1806 ( sizeof ( t1_keywords ) / sizeof ( t1_keywords[0] ) )
1810 parse_dict( T1_Face face,
1815 T1_Parser parser = &loader->parser;
1816 FT_Byte *limit, *start_binary = NULL;
1817 FT_Bool have_integer = 0;
1820 parser->root.cursor = base;
1821 parser->root.limit = base + size;
1822 parser->root.error = T1_Err_Ok;
1824 limit = parser->root.limit;
1826 T1_Skip_Spaces( parser );
1828 while ( parser->root.cursor < limit )
1833 cur = parser->root.cursor;
1835 /* look for `eexec' */
1836 if ( IS_PS_TOKEN( cur, limit, "eexec" ) )
1839 /* look for `closefile' which ends the eexec section */
1840 else if ( IS_PS_TOKEN( cur, limit, "closefile" ) )
1843 /* in a synthetic font the base font starts after a */
1844 /* `FontDictionary' token that is placed after a Private dict */
1845 else if ( IS_PS_TOKEN( cur, limit, "FontDirectory" ) )
1847 if ( loader->keywords_encountered & T1_PRIVATE )
1848 loader->keywords_encountered |=
1849 T1_FONTDIR_AFTER_PRIVATE;
1850 parser->root.cursor += 13;
1853 /* check whether we have an integer */
1854 else if ( ft_isdigit( *cur ) )
1857 T1_Skip_PS_Token( parser );
1858 if ( parser->root.error )
1863 /* in valid Type 1 fonts we don't see `RD' or `-|' directly */
1864 /* since those tokens are handled by parse_subrs and */
1865 /* parse_charstrings */
1866 else if ( *cur == 'R' && cur + 6 < limit && *(cur + 1) == 'D' &&
1873 parser->root.cursor = start_binary;
1874 if ( !read_binary_data( parser, &s, &b ) )
1875 return T1_Err_Invalid_File_Format;
1879 else if ( *cur == '-' && cur + 6 < limit && *(cur + 1) == '|' &&
1886 parser->root.cursor = start_binary;
1887 if ( !read_binary_data( parser, &s, &b ) )
1888 return T1_Err_Invalid_File_Format;
1892 /* look for immediates */
1893 else if ( *cur == '/' && cur + 2 < limit )
1900 parser->root.cursor = cur;
1901 T1_Skip_PS_Token( parser );
1902 if ( parser->root.error )
1905 len = parser->root.cursor - cur;
1907 if ( len > 0 && len < 22 && parser->root.cursor < limit )
1909 /* now compare the immediate name to the keyword table */
1910 T1_Field keyword = (T1_Field)t1_keywords;
1918 name = (FT_Byte*)keyword->ident;
1922 if ( cur[0] == name[0] &&
1923 len == (FT_PtrDist)ft_strlen( (const char *)name ) &&
1924 ft_memcmp( cur, name, len ) == 0 )
1926 /* We found it -- run the parsing callback! */
1927 /* We record every instance of every field */
1928 /* (until we reach the base font of a */
1929 /* synthetic font) to deal adequately with */
1930 /* multiple master fonts; this is also */
1931 /* necessary because later PostScript */
1932 /* definitions override earlier ones. */
1934 /* Once we encounter `FontDirectory' after */
1935 /* `/Private', we know that this is a synthetic */
1936 /* font; except for `/CharStrings' we are not */
1937 /* interested in anything that follows this */
1938 /* `FontDirectory'. */
1940 /* MM fonts have more than one /Private token at */
1941 /* the top level; let's hope that all the junk */
1942 /* that follows the first /Private token is not */
1943 /* interesting to us. */
1945 /* According to Adobe Tech Note #5175 (CID-Keyed */
1946 /* Font Installation for ATM Software) a `begin' */
1947 /* must be followed by exactly one `end', and */
1948 /* `begin' -- `end' pairs must be accurately */
1949 /* paired. We could use this to distinguish */
1950 /* between the global Private and the Private */
1951 /* dict that is a member of the Blend dict. */
1953 const FT_UInt dict =
1954 ( loader->keywords_encountered & T1_PRIVATE )
1955 ? T1_FIELD_DICT_PRIVATE
1956 : T1_FIELD_DICT_FONTDICT;
1958 if ( !( dict & keyword->dict ) )
1960 FT_TRACE1(( "parse_dict: found %s but ignoring it "
1961 "since it is in the wrong dictionary\n",
1966 if ( !( loader->keywords_encountered &
1967 T1_FONTDIR_AFTER_PRIVATE ) ||
1968 ft_strcmp( (const char*)name, "CharStrings" ) == 0 )
1970 parser->root.error = t1_load_keyword( face,
1973 if ( parser->root.error != T1_Err_Ok )
1975 if ( FT_ERROR_BASE( parser->root.error ) == FT_Err_Ignore )
1976 parser->root.error = T1_Err_Ok;
1978 return parser->root.error;
1992 T1_Skip_PS_Token( parser );
1993 if ( parser->root.error )
1998 T1_Skip_Spaces( parser );
2002 return parser->root.error;
2007 t1_init_loader( T1_Loader loader,
2012 FT_MEM_ZERO( loader, sizeof ( *loader ) );
2013 loader->num_glyphs = 0;
2014 loader->num_chars = 0;
2016 /* initialize the tables -- simply set their `init' field to 0 */
2017 loader->encoding_table.init = 0;
2018 loader->charstrings.init = 0;
2019 loader->glyph_names.init = 0;
2020 loader->subrs.init = 0;
2021 loader->swap_table.init = 0;
2022 loader->fontdata = 0;
2023 loader->keywords_encountered = 0;
2028 t1_done_loader( T1_Loader loader )
2030 T1_Parser parser = &loader->parser;
2033 /* finalize tables */
2034 T1_Release_Table( &loader->encoding_table );
2035 T1_Release_Table( &loader->charstrings );
2036 T1_Release_Table( &loader->glyph_names );
2037 T1_Release_Table( &loader->swap_table );
2038 T1_Release_Table( &loader->subrs );
2040 /* finalize parser */
2041 T1_Finalize_Parser( parser );
2045 FT_LOCAL_DEF( FT_Error )
2046 T1_Open_Face( T1_Face face )
2048 T1_LoaderRec loader;
2050 T1_Font type1 = &face->type1;
2051 PS_Private priv = &type1->private_dict;
2054 PSAux_Service psaux = (PSAux_Service)face->psaux;
2057 t1_init_loader( &loader, face );
2059 /* default values */
2062 face->len_buildchar = 0;
2064 priv->blue_shift = 7;
2065 priv->blue_fuzz = 1;
2067 priv->expansion_factor = (FT_Fixed)( 0.06 * 0x10000L );
2068 priv->blue_scale = (FT_Fixed)( 0.039625 * 0x10000L * 1000 );
2070 parser = &loader.parser;
2071 error = T1_New_Parser( parser,
2078 error = parse_dict( face, &loader,
2079 parser->base_dict, parser->base_len );
2083 error = T1_Get_Private_Dict( parser, psaux );
2087 error = parse_dict( face, &loader,
2088 parser->private_dict, parser->private_len );
2092 /* ensure even-ness of `num_blue_values' */
2093 priv->num_blue_values &= ~1;
2095 #ifndef T1_CONFIG_OPTION_NO_MM_SUPPORT
2098 face->blend->num_default_design_vector != 0 &&
2099 face->blend->num_default_design_vector != face->blend->num_axis )
2101 /* we don't use it currently so just warn, reset, and ignore */
2102 FT_ERROR(( "T1_Open_Face(): /DesignVector contains %u entries "
2103 "while there are %u axes.\n",
2104 face->blend->num_default_design_vector,
2105 face->blend->num_axis ));
2107 face->blend->num_default_design_vector = 0;
2110 /* the following can happen for MM instances; we then treat the */
2111 /* font as a normal PS font */
2113 ( !face->blend->num_designs || !face->blend->num_axis ) )
2114 T1_Done_Blend( face );
2116 /* another safety check */
2122 for ( i = 0; i < face->blend->num_axis; i++ )
2123 if ( !face->blend->design_map[i].num_points )
2125 T1_Done_Blend( face );
2132 if ( face->len_buildchar > 0 )
2134 FT_Memory memory = face->root.memory;
2137 if ( FT_NEW_ARRAY( face->buildchar, face->len_buildchar ) )
2139 FT_ERROR(( "T1_Open_Face: cannot allocate BuildCharArray\n" ));
2140 face->len_buildchar = 0;
2146 face->len_buildchar = 0;
2148 #endif /* !T1_CONFIG_OPTION_NO_MM_SUPPORT */
2150 /* now, propagate the subrs, charstrings, and glyphnames tables */
2151 /* to the Type1 data */
2152 type1->num_glyphs = loader.num_glyphs;
2154 if ( loader.subrs.init )
2156 loader.subrs.init = 0;
2157 type1->num_subrs = loader.num_subrs;
2158 type1->subrs_block = loader.subrs.block;
2159 type1->subrs = loader.subrs.elements;
2160 type1->subrs_len = loader.subrs.lengths;
2163 #ifdef FT_CONFIG_OPTION_INCREMENTAL
2164 if ( !face->root.internal->incremental_interface )
2166 if ( !loader.charstrings.init )
2168 FT_ERROR(( "T1_Open_Face: no `/CharStrings' array in face\n" ));
2169 error = T1_Err_Invalid_File_Format;
2172 loader.charstrings.init = 0;
2173 type1->charstrings_block = loader.charstrings.block;
2174 type1->charstrings = loader.charstrings.elements;
2175 type1->charstrings_len = loader.charstrings.lengths;
2177 /* we copy the glyph names `block' and `elements' fields; */
2178 /* the `lengths' field must be released later */
2179 type1->glyph_names_block = loader.glyph_names.block;
2180 type1->glyph_names = (FT_String**)loader.glyph_names.elements;
2181 loader.glyph_names.block = 0;
2182 loader.glyph_names.elements = 0;
2184 /* we must now build type1.encoding when we have a custom array */
2185 if ( type1->encoding_type == T1_ENCODING_TYPE_ARRAY )
2187 FT_Int charcode, idx, min_char, max_char;
2189 FT_Byte* glyph_name;
2192 /* OK, we do the following: for each element in the encoding */
2193 /* table, look up the index of the glyph having the same name */
2194 /* the index is then stored in type1.encoding.char_index, and */
2195 /* the name to type1.encoding.char_name */
2201 for ( ; charcode < loader.encoding_table.max_elems; charcode++ )
2203 type1->encoding.char_index[charcode] = 0;
2204 type1->encoding.char_name [charcode] = (char *)".notdef";
2206 char_name = loader.encoding_table.elements[charcode];
2208 for ( idx = 0; idx < type1->num_glyphs; idx++ )
2210 glyph_name = (FT_Byte*)type1->glyph_names[idx];
2211 if ( ft_strcmp( (const char*)char_name,
2212 (const char*)glyph_name ) == 0 )
2214 type1->encoding.char_index[charcode] = (FT_UShort)idx;
2215 type1->encoding.char_name [charcode] = (char*)glyph_name;
2217 /* Change min/max encoded char only if glyph name is */
2219 if ( ft_strcmp( (const char*)".notdef",
2220 (const char*)glyph_name ) != 0 )
2222 if ( charcode < min_char )
2223 min_char = charcode;
2224 if ( charcode >= max_char )
2225 max_char = charcode + 1;
2232 type1->encoding.code_first = min_char;
2233 type1->encoding.code_last = max_char;
2234 type1->encoding.num_chars = loader.num_chars;
2238 t1_done_loader( &loader );