1 /***************************************************************************/
5 /* Type 1 font loader (body). */
7 /* Copyright 1996-2014 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 #ifdef FT_CONFIG_OPTION_INCREMENTAL
75 #define IS_INCREMENTAL (FT_Bool)( face->root.internal->incremental_interface != 0 )
77 #define IS_INCREMENTAL 0
81 /*************************************************************************/
83 /* The macro FT_COMPONENT is used in trace mode. It is an implicit */
84 /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */
85 /* messages during execution. */
88 #define FT_COMPONENT trace_t1load
91 #ifndef T1_CONFIG_OPTION_NO_MM_SUPPORT
94 /*************************************************************************/
95 /*************************************************************************/
97 /***** MULTIPLE MASTERS SUPPORT *****/
99 /*************************************************************************/
100 /*************************************************************************/
103 t1_allocate_blend( T1_Face face,
108 FT_Memory memory = face->root.memory;
109 FT_Error error = FT_Err_Ok;
115 if ( FT_NEW( blend ) )
118 blend->num_default_design_vector = 0;
123 /* allocate design data if needed */
124 if ( num_designs > 0 )
126 if ( blend->num_designs == 0 )
131 /* allocate the blend `private' and `font_info' dictionaries */
132 if ( FT_NEW_ARRAY( blend->font_infos[1], num_designs ) ||
133 FT_NEW_ARRAY( blend->privates [1], num_designs ) ||
134 FT_NEW_ARRAY( blend->bboxes [1], num_designs ) ||
135 FT_NEW_ARRAY( blend->weight_vector, num_designs * 2 ) )
138 blend->default_weight_vector = blend->weight_vector + num_designs;
140 blend->font_infos[0] = &face->type1.font_info;
141 blend->privates [0] = &face->type1.private_dict;
142 blend->bboxes [0] = &face->type1.font_bbox;
144 for ( nn = 2; nn <= num_designs; nn++ )
146 blend->font_infos[nn] = blend->font_infos[nn - 1] + 1;
147 blend->privates [nn] = blend->privates [nn - 1] + 1;
148 blend->bboxes [nn] = blend->bboxes [nn - 1] + 1;
151 blend->num_designs = num_designs;
153 else if ( blend->num_designs != num_designs )
157 /* allocate axis data if needed */
160 if ( blend->num_axis != 0 && blend->num_axis != num_axis )
163 blend->num_axis = num_axis;
166 /* allocate the blend design pos table if needed */
167 num_designs = blend->num_designs;
168 num_axis = blend->num_axis;
169 if ( num_designs && num_axis && blend->design_pos[0] == 0 )
174 if ( FT_NEW_ARRAY( blend->design_pos[0], num_designs * num_axis ) )
177 for ( n = 1; n < num_designs; n++ )
178 blend->design_pos[n] = blend->design_pos[0] + num_axis * n;
185 error = FT_THROW( Invalid_File_Format );
190 FT_LOCAL_DEF( FT_Error )
191 T1_Get_Multi_Master( T1_Face face,
192 FT_Multi_Master* master )
194 PS_Blend blend = face->blend;
199 error = FT_THROW( Invalid_Argument );
203 master->num_axis = blend->num_axis;
204 master->num_designs = blend->num_designs;
206 for ( n = 0; n < blend->num_axis; n++ )
208 FT_MM_Axis* axis = master->axis + n;
209 PS_DesignMap map = blend->design_map + n;
212 axis->name = blend->axis_names[n];
213 axis->minimum = map->design_points[0];
214 axis->maximum = map->design_points[map->num_points - 1];
224 /*************************************************************************/
226 /* Given a normalized (blend) coordinate, figure out the design */
227 /* coordinate appropriate for that value. */
229 FT_LOCAL_DEF( FT_Fixed )
230 mm_axis_unmap( PS_DesignMap axismap,
236 if ( ncv <= axismap->blend_points[0] )
237 return INT_TO_FIXED( axismap->design_points[0] );
239 for ( j = 1; j < axismap->num_points; ++j )
241 if ( ncv <= axismap->blend_points[j] )
242 return INT_TO_FIXED( axismap->design_points[j - 1] ) +
243 ( axismap->design_points[j] - axismap->design_points[j - 1] ) *
244 FT_DivFix( ncv - axismap->blend_points[j - 1],
245 axismap->blend_points[j] -
246 axismap->blend_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 = ~0U; /* 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 = ~0U; /* Does not apply */
337 mmvar->axis[i].tag = ~0U; /* 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 = FT_ERR( Invalid_Argument );
377 if ( blend && blend->num_axis == num_coords )
379 /* recompute the weight vector from the blend coordinates */
380 for ( n = 0; n < blend->num_designs; n++ )
382 FT_Fixed result = 0x10000L; /* 1.0 fixed */
385 for ( m = 0; m < blend->num_axis; m++ )
390 /* get current blend axis position */
394 if ( 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 = FT_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 = FT_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] = NULL;
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] = NULL;
537 blend->font_infos[n] = NULL;
538 blend->bboxes [n] = NULL;
541 /* release weight vectors */
542 FT_FREE( blend->weight_vector );
543 blend->default_weight_vector = NULL;
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 = FT_Err_Ok;
575 /* take an array of objects */
576 T1_ToTokenArray( &loader->parser, axis_tokens,
577 T1_MAX_MM_AXIS, &num_axis );
580 error = FT_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 = FT_THROW( 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 = FT_THROW( Invalid_File_Format );
618 if ( FT_ALLOC( blend->axis_names[n], (FT_Long)( 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 = FT_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 = FT_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 = FT_THROW( 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 = FT_THROW( 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 = FT_THROW( 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 = FT_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 = FT_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 = FT_THROW( 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 = FT_THROW( 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 = FT_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 = FT_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 = FT_THROW( 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 = FT_THROW( 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;
1009 if ( field->type == T1_FIELD_TYPE_INTEGER_ARRAY ||
1010 field->type == T1_FIELD_TYPE_FIXED_ARRAY )
1011 error = T1_Load_Field_Table( &loader->parser, field,
1012 objects, max_objects, 0 );
1014 error = T1_Load_Field( &loader->parser, field,
1015 objects, max_objects, 0 );
1019 FT_TRACE1(( "t1_load_keyword: ignoring keyword `%s'"
1020 " which is not valid at this point\n"
1021 " (probably due to missing keywords)\n",
1032 parse_private( T1_Face face,
1037 loader->keywords_encountered |= T1_PRIVATE;
1042 read_binary_data( T1_Parser parser,
1045 FT_Bool incremental )
1048 FT_Byte* limit = parser->root.limit;
1051 /* the binary data has one of the following formats */
1053 /* `size' [white*] RD white ....... ND */
1054 /* `size' [white*] -| white ....... |- */
1057 T1_Skip_Spaces( parser );
1059 cur = parser->root.cursor;
1061 if ( cur < limit && ft_isdigit( *cur ) )
1063 FT_Long s = T1_ToInt( parser );
1066 T1_Skip_PS_Token( parser ); /* `RD' or `-|' or something else */
1068 /* there is only one whitespace char after the */
1069 /* `RD' or `-|' token */
1070 *base = parser->root.cursor + 1;
1072 if ( s >= 0 && s < limit - *base )
1074 parser->root.cursor += s + 1;
1076 return !parser->root.error;
1082 FT_ERROR(( "read_binary_data: invalid size field\n" ));
1083 parser->root.error = FT_THROW( Invalid_File_Format );
1090 /* We now define the routines to handle the `/Encoding', `/Subrs', */
1091 /* and `/CharStrings' dictionaries. */
1094 t1_parse_font_matrix( T1_Face face,
1097 T1_Parser parser = &loader->parser;
1098 FT_Matrix* matrix = &face->type1.font_matrix;
1099 FT_Vector* offset = &face->type1.font_offset;
1100 FT_Face root = (FT_Face)&face->root;
1102 FT_Fixed temp_scale;
1106 result = T1_ToFixedArray( parser, 6, temp, 3 );
1110 parser->root.error = FT_THROW( Invalid_File_Format );
1114 temp_scale = FT_ABS( temp[3] );
1116 if ( temp_scale == 0 )
1118 FT_ERROR(( "t1_parse_font_matrix: invalid font matrix\n" ));
1119 parser->root.error = FT_THROW( Invalid_File_Format );
1123 /* Set Units per EM based on FontMatrix values. We set the value to */
1124 /* 1000 / temp_scale, because temp_scale was already multiplied by */
1125 /* 1000 (in t1_tofixed, from psobjs.c). */
1127 root->units_per_EM = (FT_UShort)FT_DivFix( 1000, temp_scale );
1129 /* we need to scale the values by 1.0/temp_scale */
1130 if ( temp_scale != 0x10000L )
1132 temp[0] = FT_DivFix( temp[0], temp_scale );
1133 temp[1] = FT_DivFix( temp[1], temp_scale );
1134 temp[2] = FT_DivFix( temp[2], temp_scale );
1135 temp[4] = FT_DivFix( temp[4], temp_scale );
1136 temp[5] = FT_DivFix( temp[5], temp_scale );
1137 temp[3] = temp[3] < 0 ? -0x10000L : 0x10000L;
1140 matrix->xx = temp[0];
1141 matrix->yx = temp[1];
1142 matrix->xy = temp[2];
1143 matrix->yy = temp[3];
1145 /* note that the offsets must be expressed in integer font units */
1146 offset->x = temp[4] >> 16;
1147 offset->y = temp[5] >> 16;
1152 parse_encoding( T1_Face face,
1155 T1_Parser parser = &loader->parser;
1157 FT_Byte* limit = parser->root.limit;
1159 PSAux_Service psaux = (PSAux_Service)face->psaux;
1162 T1_Skip_Spaces( parser );
1163 cur = parser->root.cursor;
1166 FT_ERROR(( "parse_encoding: out of bounds\n" ));
1167 parser->root.error = FT_THROW( Invalid_File_Format );
1171 /* if we have a number or `[', the encoding is an array, */
1172 /* and we must load it now */
1173 if ( ft_isdigit( *cur ) || *cur == '[' )
1175 T1_Encoding encode = &face->type1.encoding;
1177 PS_Table char_table = &loader->encoding_table;
1178 FT_Memory memory = parser->root.memory;
1180 FT_Bool only_immediates = 0;
1183 /* read the number of entries in the encoding; should be 256 */
1187 only_immediates = 1;
1188 parser->root.cursor++;
1191 count = (FT_Int)T1_ToInt( parser );
1193 T1_Skip_Spaces( parser );
1194 if ( parser->root.cursor >= limit )
1197 /* we use a T1_Table to store our charnames */
1198 loader->num_chars = encode->num_chars = count;
1199 if ( FT_NEW_ARRAY( encode->char_index, count ) ||
1200 FT_NEW_ARRAY( encode->char_name, count ) ||
1201 FT_SET_ERROR( psaux->ps_table_funcs->init(
1202 char_table, count, memory ) ) )
1204 parser->root.error = error;
1208 /* We need to `zero' out encoding_table.elements */
1209 for ( n = 0; n < count; n++ )
1211 char* notdef = (char *)".notdef";
1214 (void)T1_Add_Table( char_table, n, notdef, 8 );
1217 /* Now we need to read records of the form */
1219 /* ... charcode /charname ... */
1221 /* for each entry in our table. */
1223 /* We simply look for a number followed by an immediate */
1224 /* name. Note that this ignores correctly the sequence */
1225 /* that is often seen in type1 fonts: */
1227 /* 0 1 255 { 1 index exch /.notdef put } for dup */
1229 /* used to clean the encoding array before anything else. */
1231 /* Alternatively, if the array is directly given as */
1233 /* /Encoding [ ... ] */
1235 /* we only read immediates. */
1238 T1_Skip_Spaces( parser );
1240 while ( parser->root.cursor < limit )
1242 cur = parser->root.cursor;
1244 /* we stop when we encounter a `def' or `]' */
1245 if ( *cur == 'd' && cur + 3 < limit )
1247 if ( cur[1] == 'e' &&
1249 IS_PS_DELIM( cur[3] ) )
1251 FT_TRACE6(( "encoding end\n" ));
1258 FT_TRACE6(( "encoding end\n" ));
1263 /* check whether we've found an entry */
1264 if ( ft_isdigit( *cur ) || only_immediates )
1269 if ( only_immediates )
1273 charcode = (FT_Int)T1_ToInt( parser );
1274 T1_Skip_Spaces( parser );
1276 /* protect against invalid charcode */
1277 if ( cur == parser->root.cursor )
1279 parser->root.error = FT_THROW( Unknown_File_Format );
1284 cur = parser->root.cursor;
1286 if ( cur + 2 < limit && *cur == '/' && n < count )
1293 parser->root.cursor = cur;
1294 T1_Skip_PS_Token( parser );
1295 if ( parser->root.cursor >= limit )
1297 if ( parser->root.error )
1300 len = parser->root.cursor - cur;
1302 parser->root.error = T1_Add_Table( char_table, charcode,
1304 if ( parser->root.error )
1306 char_table->elements[charcode][len] = '\0';
1310 else if ( only_immediates )
1312 /* Since the current position is not updated for */
1313 /* immediates-only mode we would get an infinite loop if */
1314 /* we don't do anything here. */
1316 /* This encoding array is not valid according to the type1 */
1317 /* specification (it might be an encoding for a CID type1 */
1318 /* font, however), so we conclude that this font is NOT a */
1320 parser->root.error = FT_THROW( Unknown_File_Format );
1326 T1_Skip_PS_Token( parser );
1327 if ( parser->root.error )
1331 T1_Skip_Spaces( parser );
1334 face->type1.encoding_type = T1_ENCODING_TYPE_ARRAY;
1335 parser->root.cursor = cur;
1338 /* Otherwise, we should have either `StandardEncoding', */
1339 /* `ExpertEncoding', or `ISOLatin1Encoding' */
1342 if ( cur + 17 < limit &&
1343 ft_strncmp( (const char*)cur, "StandardEncoding", 16 ) == 0 )
1344 face->type1.encoding_type = T1_ENCODING_TYPE_STANDARD;
1346 else if ( cur + 15 < limit &&
1347 ft_strncmp( (const char*)cur, "ExpertEncoding", 14 ) == 0 )
1348 face->type1.encoding_type = T1_ENCODING_TYPE_EXPERT;
1350 else if ( cur + 18 < limit &&
1351 ft_strncmp( (const char*)cur, "ISOLatin1Encoding", 17 ) == 0 )
1352 face->type1.encoding_type = T1_ENCODING_TYPE_ISOLATIN1;
1355 parser->root.error = FT_ERR( Ignore );
1361 parse_subrs( T1_Face face,
1364 T1_Parser parser = &loader->parser;
1365 PS_Table table = &loader->subrs;
1366 FT_Memory memory = parser->root.memory;
1370 PSAux_Service psaux = (PSAux_Service)face->psaux;
1373 T1_Skip_Spaces( parser );
1375 /* test for empty array */
1376 if ( parser->root.cursor < parser->root.limit &&
1377 *parser->root.cursor == '[' )
1379 T1_Skip_PS_Token( parser );
1380 T1_Skip_Spaces ( parser );
1381 if ( parser->root.cursor >= parser->root.limit ||
1382 *parser->root.cursor != ']' )
1383 parser->root.error = FT_THROW( Invalid_File_Format );
1387 num_subrs = (FT_Int)T1_ToInt( parser );
1389 /* position the parser right before the `dup' of the first subr */
1390 T1_Skip_PS_Token( parser ); /* `array' */
1391 if ( parser->root.error )
1393 T1_Skip_Spaces( parser );
1395 /* initialize subrs array -- with synthetic fonts it is possible */
1396 /* we get here twice */
1397 if ( !loader->num_subrs )
1399 error = psaux->ps_table_funcs->init( table, num_subrs, memory );
1404 /* the format is simple: */
1406 /* `index' + binary data */
1414 /* If we are out of data, or if the next token isn't `dup', */
1416 if ( parser->root.cursor + 4 >= parser->root.limit ||
1417 ft_strncmp( (char*)parser->root.cursor, "dup", 3 ) != 0 )
1420 T1_Skip_PS_Token( parser ); /* `dup' */
1422 idx = T1_ToInt( parser );
1424 if ( !read_binary_data( parser, &size, &base, IS_INCREMENTAL ) )
1427 /* The binary string is followed by one token, e.g. `NP' */
1428 /* (bound to `noaccess put') or by two separate tokens: */
1429 /* `noaccess' & `put'. We position the parser right */
1430 /* before the next `dup', if any. */
1431 T1_Skip_PS_Token( parser ); /* `NP' or `|' or `noaccess' */
1432 if ( parser->root.error )
1434 T1_Skip_Spaces ( parser );
1436 if ( parser->root.cursor + 4 < parser->root.limit &&
1437 ft_strncmp( (char*)parser->root.cursor, "put", 3 ) == 0 )
1439 T1_Skip_PS_Token( parser ); /* skip `put' */
1440 T1_Skip_Spaces ( parser );
1443 /* with synthetic fonts it is possible we get here twice */
1444 if ( loader->num_subrs )
1447 /* some fonts use a value of -1 for lenIV to indicate that */
1448 /* the charstrings are unencoded */
1450 /* thanks to Tom Kacvinsky for pointing this out */
1452 if ( face->type1.private_dict.lenIV >= 0 )
1457 /* some fonts define empty subr records -- this is not totally */
1458 /* compliant to the specification (which says they should at */
1459 /* least contain a `return'), but we support them anyway */
1460 if ( size < face->type1.private_dict.lenIV )
1462 error = FT_THROW( Invalid_File_Format );
1466 /* t1_decrypt() shouldn't write to base -- make temporary copy */
1467 if ( FT_ALLOC( temp, size ) )
1469 FT_MEM_COPY( temp, base, size );
1470 psaux->t1_decrypt( temp, size, 4330 );
1471 size -= face->type1.private_dict.lenIV;
1472 error = T1_Add_Table( table, (FT_Int)idx,
1473 temp + face->type1.private_dict.lenIV, size );
1477 error = T1_Add_Table( table, (FT_Int)idx, base, size );
1482 if ( !loader->num_subrs )
1483 loader->num_subrs = num_subrs;
1488 parser->root.error = error;
1492 #define TABLE_EXTEND 5
1496 parse_charstrings( T1_Face face,
1499 T1_Parser parser = &loader->parser;
1500 PS_Table code_table = &loader->charstrings;
1501 PS_Table name_table = &loader->glyph_names;
1502 PS_Table swap_table = &loader->swap_table;
1503 FT_Memory memory = parser->root.memory;
1506 PSAux_Service psaux = (PSAux_Service)face->psaux;
1509 FT_Byte* limit = parser->root.limit;
1510 FT_Int n, num_glyphs;
1511 FT_UInt notdef_index = 0;
1512 FT_Byte notdef_found = 0;
1515 num_glyphs = (FT_Int)T1_ToInt( parser );
1516 if ( num_glyphs < 0 )
1518 error = FT_THROW( Invalid_File_Format );
1522 /* some fonts like Optima-Oblique not only define the /CharStrings */
1523 /* array but access it also */
1524 if ( num_glyphs == 0 || parser->root.error )
1527 /* initialize tables, leaving space for addition of .notdef, */
1528 /* if necessary, and a few other glyphs to handle buggy */
1529 /* fonts which have more glyphs than specified. */
1531 /* for some non-standard fonts like `Optima' which provides */
1532 /* different outlines depending on the resolution it is */
1533 /* possible to get here twice */
1534 if ( !loader->num_glyphs )
1536 error = psaux->ps_table_funcs->init(
1537 code_table, num_glyphs + 1 + TABLE_EXTEND, memory );
1541 error = psaux->ps_table_funcs->init(
1542 name_table, num_glyphs + 1 + TABLE_EXTEND, memory );
1546 /* Initialize table for swapping index notdef_index and */
1547 /* index 0 names and codes (if necessary). */
1549 error = psaux->ps_table_funcs->init( swap_table, 4, memory );
1562 /* the format is simple: */
1563 /* `/glyphname' + binary data */
1565 T1_Skip_Spaces( parser );
1567 cur = parser->root.cursor;
1571 /* we stop when we find a `def' or `end' keyword */
1572 if ( cur + 3 < limit && IS_PS_DELIM( cur[3] ) )
1574 if ( cur[0] == 'd' &&
1578 /* There are fonts which have this: */
1580 /* /CharStrings 118 dict def */
1582 /* CharStrings begin */
1585 /* To catch this we ignore `def' if */
1586 /* no charstring has actually been */
1592 if ( cur[0] == 'e' &&
1598 T1_Skip_PS_Token( parser );
1599 if ( parser->root.cursor >= limit )
1601 error = FT_THROW( Invalid_File_Format );
1604 if ( parser->root.error )
1612 if ( cur + 2 >= limit )
1614 error = FT_THROW( Invalid_File_Format );
1618 cur++; /* skip `/' */
1619 len = parser->root.cursor - cur;
1621 if ( !read_binary_data( parser, &size, &base, IS_INCREMENTAL ) )
1624 /* for some non-standard fonts like `Optima' which provides */
1625 /* different outlines depending on the resolution it is */
1626 /* possible to get here twice */
1627 if ( loader->num_glyphs )
1630 error = T1_Add_Table( name_table, n, cur, len + 1 );
1634 /* add a trailing zero to the name table */
1635 name_table->elements[n][len] = '\0';
1637 /* record index of /.notdef */
1639 ft_strcmp( ".notdef",
1640 (const char*)(name_table->elements[n]) ) == 0 )
1646 if ( face->type1.private_dict.lenIV >= 0 &&
1647 n < num_glyphs + TABLE_EXTEND )
1652 if ( size <= face->type1.private_dict.lenIV )
1654 error = FT_THROW( Invalid_File_Format );
1658 /* t1_decrypt() shouldn't write to base -- make temporary copy */
1659 if ( FT_ALLOC( temp, size ) )
1661 FT_MEM_COPY( temp, base, size );
1662 psaux->t1_decrypt( temp, size, 4330 );
1663 size -= face->type1.private_dict.lenIV;
1664 error = T1_Add_Table( code_table, n,
1665 temp + face->type1.private_dict.lenIV, size );
1669 error = T1_Add_Table( code_table, n, base, size );
1677 loader->num_glyphs = n;
1679 /* if /.notdef is found but does not occupy index 0, do our magic. */
1680 if ( notdef_found &&
1681 ft_strcmp( ".notdef", (const char*)name_table->elements[0] ) )
1683 /* Swap glyph in index 0 with /.notdef glyph. First, add index 0 */
1684 /* name and code entries to swap_table. Then place notdef_index */
1685 /* name and code entries into swap_table. Then swap name and code */
1686 /* entries at indices notdef_index and 0 using values stored in */
1690 error = T1_Add_Table( swap_table, 0,
1691 name_table->elements[0],
1692 name_table->lengths [0] );
1697 error = T1_Add_Table( swap_table, 1,
1698 code_table->elements[0],
1699 code_table->lengths [0] );
1703 /* Index notdef_index name */
1704 error = T1_Add_Table( swap_table, 2,
1705 name_table->elements[notdef_index],
1706 name_table->lengths [notdef_index] );
1710 /* Index notdef_index code */
1711 error = T1_Add_Table( swap_table, 3,
1712 code_table->elements[notdef_index],
1713 code_table->lengths [notdef_index] );
1717 error = T1_Add_Table( name_table, notdef_index,
1718 swap_table->elements[0],
1719 swap_table->lengths [0] );
1723 error = T1_Add_Table( code_table, notdef_index,
1724 swap_table->elements[1],
1725 swap_table->lengths [1] );
1729 error = T1_Add_Table( name_table, 0,
1730 swap_table->elements[2],
1731 swap_table->lengths [2] );
1735 error = T1_Add_Table( code_table, 0,
1736 swap_table->elements[3],
1737 swap_table->lengths [3] );
1742 else if ( !notdef_found )
1744 /* notdef_index is already 0, or /.notdef is undefined in */
1745 /* charstrings dictionary. Worry about /.notdef undefined. */
1746 /* We take index 0 and add it to the end of the table(s) */
1747 /* and add our own /.notdef glyph to index 0. */
1749 /* 0 333 hsbw endchar */
1750 FT_Byte notdef_glyph[] = { 0x8B, 0xF7, 0xE1, 0x0D, 0x0E };
1751 char* notdef_name = (char *)".notdef";
1754 error = T1_Add_Table( swap_table, 0,
1755 name_table->elements[0],
1756 name_table->lengths [0] );
1760 error = T1_Add_Table( swap_table, 1,
1761 code_table->elements[0],
1762 code_table->lengths [0] );
1766 error = T1_Add_Table( name_table, 0, notdef_name, 8 );
1770 error = T1_Add_Table( code_table, 0, notdef_glyph, 5 );
1775 error = T1_Add_Table( name_table, n,
1776 swap_table->elements[0],
1777 swap_table->lengths [0] );
1781 error = T1_Add_Table( code_table, n,
1782 swap_table->elements[1],
1783 swap_table->lengths [1] );
1787 /* we added a glyph. */
1788 loader->num_glyphs += 1;
1794 parser->root.error = error;
1798 /*************************************************************************/
1800 /* Define the token field static variables. This is a set of */
1801 /* T1_FieldRec variables. */
1803 /*************************************************************************/
1807 const T1_FieldRec t1_keywords[] =
1810 #include "t1tokens.h"
1812 /* now add the special functions... */
1813 T1_FIELD_CALLBACK( "FontMatrix", t1_parse_font_matrix,
1814 T1_FIELD_DICT_FONTDICT )
1815 T1_FIELD_CALLBACK( "Encoding", parse_encoding,
1816 T1_FIELD_DICT_FONTDICT )
1817 T1_FIELD_CALLBACK( "Subrs", parse_subrs,
1818 T1_FIELD_DICT_PRIVATE )
1819 T1_FIELD_CALLBACK( "CharStrings", parse_charstrings,
1820 T1_FIELD_DICT_PRIVATE )
1821 T1_FIELD_CALLBACK( "Private", parse_private,
1822 T1_FIELD_DICT_FONTDICT )
1824 #ifndef T1_CONFIG_OPTION_NO_MM_SUPPORT
1825 T1_FIELD_CALLBACK( "BlendDesignPositions", parse_blend_design_positions,
1826 T1_FIELD_DICT_FONTDICT )
1827 T1_FIELD_CALLBACK( "BlendDesignMap", parse_blend_design_map,
1828 T1_FIELD_DICT_FONTDICT )
1829 T1_FIELD_CALLBACK( "BlendAxisTypes", parse_blend_axis_types,
1830 T1_FIELD_DICT_FONTDICT )
1831 T1_FIELD_CALLBACK( "WeightVector", parse_weight_vector,
1832 T1_FIELD_DICT_FONTDICT )
1833 T1_FIELD_CALLBACK( "BuildCharArray", parse_buildchar,
1834 T1_FIELD_DICT_PRIVATE )
1837 { 0, T1_FIELD_LOCATION_CID_INFO, T1_FIELD_TYPE_NONE, 0, 0, 0, 0, 0, 0 }
1841 #define T1_FIELD_COUNT \
1842 ( sizeof ( t1_keywords ) / sizeof ( t1_keywords[0] ) )
1846 parse_dict( T1_Face face,
1851 T1_Parser parser = &loader->parser;
1852 FT_Byte *limit, *start_binary = NULL;
1853 FT_Bool have_integer = 0;
1856 parser->root.cursor = base;
1857 parser->root.limit = base + size;
1858 parser->root.error = FT_Err_Ok;
1860 limit = parser->root.limit;
1862 T1_Skip_Spaces( parser );
1864 while ( parser->root.cursor < limit )
1869 cur = parser->root.cursor;
1871 /* look for `eexec' */
1872 if ( IS_PS_TOKEN( cur, limit, "eexec" ) )
1875 /* look for `closefile' which ends the eexec section */
1876 else if ( IS_PS_TOKEN( cur, limit, "closefile" ) )
1879 /* in a synthetic font the base font starts after a */
1880 /* `FontDictionary' token that is placed after a Private dict */
1881 else if ( IS_PS_TOKEN( cur, limit, "FontDirectory" ) )
1883 if ( loader->keywords_encountered & T1_PRIVATE )
1884 loader->keywords_encountered |=
1885 T1_FONTDIR_AFTER_PRIVATE;
1886 parser->root.cursor += 13;
1889 /* check whether we have an integer */
1890 else if ( ft_isdigit( *cur ) )
1893 T1_Skip_PS_Token( parser );
1894 if ( parser->root.error )
1899 /* in valid Type 1 fonts we don't see `RD' or `-|' directly */
1900 /* since those tokens are handled by parse_subrs and */
1901 /* parse_charstrings */
1902 else if ( *cur == 'R' && cur + 6 < limit && *(cur + 1) == 'D' &&
1909 parser->root.cursor = start_binary;
1910 if ( !read_binary_data( parser, &s, &b, IS_INCREMENTAL ) )
1911 return FT_THROW( Invalid_File_Format );
1915 else if ( *cur == '-' && cur + 6 < limit && *(cur + 1) == '|' &&
1922 parser->root.cursor = start_binary;
1923 if ( !read_binary_data( parser, &s, &b, IS_INCREMENTAL ) )
1924 return FT_THROW( Invalid_File_Format );
1928 /* look for immediates */
1929 else if ( *cur == '/' && cur + 2 < limit )
1936 parser->root.cursor = cur;
1937 T1_Skip_PS_Token( parser );
1938 if ( parser->root.error )
1941 len = parser->root.cursor - cur;
1943 if ( len > 0 && len < 22 && parser->root.cursor < limit )
1945 /* now compare the immediate name to the keyword table */
1946 T1_Field keyword = (T1_Field)t1_keywords;
1954 name = (FT_Byte*)keyword->ident;
1958 if ( cur[0] == name[0] &&
1959 len == (FT_PtrDist)ft_strlen( (const char *)name ) &&
1960 ft_memcmp( cur, name, len ) == 0 )
1962 /* We found it -- run the parsing callback! */
1963 /* We record every instance of every field */
1964 /* (until we reach the base font of a */
1965 /* synthetic font) to deal adequately with */
1966 /* multiple master fonts; this is also */
1967 /* necessary because later PostScript */
1968 /* definitions override earlier ones. */
1970 /* Once we encounter `FontDirectory' after */
1971 /* `/Private', we know that this is a synthetic */
1972 /* font; except for `/CharStrings' we are not */
1973 /* interested in anything that follows this */
1974 /* `FontDirectory'. */
1976 /* MM fonts have more than one /Private token at */
1977 /* the top level; let's hope that all the junk */
1978 /* that follows the first /Private token is not */
1979 /* interesting to us. */
1981 /* According to Adobe Tech Note #5175 (CID-Keyed */
1982 /* Font Installation for ATM Software) a `begin' */
1983 /* must be followed by exactly one `end', and */
1984 /* `begin' -- `end' pairs must be accurately */
1985 /* paired. We could use this to distinguish */
1986 /* between the global Private and the Private */
1987 /* dict that is a member of the Blend dict. */
1989 const FT_UInt dict =
1990 ( loader->keywords_encountered & T1_PRIVATE )
1991 ? T1_FIELD_DICT_PRIVATE
1992 : T1_FIELD_DICT_FONTDICT;
1994 if ( !( dict & keyword->dict ) )
1996 FT_TRACE1(( "parse_dict: found `%s' but ignoring it"
1997 " since it is in the wrong dictionary\n",
2002 if ( !( loader->keywords_encountered &
2003 T1_FONTDIR_AFTER_PRIVATE ) ||
2004 ft_strcmp( (const char*)name, "CharStrings" ) == 0 )
2006 parser->root.error = t1_load_keyword( face,
2009 if ( parser->root.error != FT_Err_Ok )
2011 if ( FT_ERR_EQ( parser->root.error, Ignore ) )
2012 parser->root.error = FT_Err_Ok;
2014 return parser->root.error;
2028 T1_Skip_PS_Token( parser );
2029 if ( parser->root.error )
2034 T1_Skip_Spaces( parser );
2038 return parser->root.error;
2043 t1_init_loader( T1_Loader loader,
2048 FT_MEM_ZERO( loader, sizeof ( *loader ) );
2049 loader->num_glyphs = 0;
2050 loader->num_chars = 0;
2052 /* initialize the tables -- simply set their `init' field to 0 */
2053 loader->encoding_table.init = 0;
2054 loader->charstrings.init = 0;
2055 loader->glyph_names.init = 0;
2056 loader->subrs.init = 0;
2057 loader->swap_table.init = 0;
2058 loader->fontdata = 0;
2059 loader->keywords_encountered = 0;
2064 t1_done_loader( T1_Loader loader )
2066 T1_Parser parser = &loader->parser;
2069 /* finalize tables */
2070 T1_Release_Table( &loader->encoding_table );
2071 T1_Release_Table( &loader->charstrings );
2072 T1_Release_Table( &loader->glyph_names );
2073 T1_Release_Table( &loader->swap_table );
2074 T1_Release_Table( &loader->subrs );
2076 /* finalize parser */
2077 T1_Finalize_Parser( parser );
2081 FT_LOCAL_DEF( FT_Error )
2082 T1_Open_Face( T1_Face face )
2084 T1_LoaderRec loader;
2086 T1_Font type1 = &face->type1;
2087 PS_Private priv = &type1->private_dict;
2090 PSAux_Service psaux = (PSAux_Service)face->psaux;
2093 t1_init_loader( &loader, face );
2095 /* default values */
2098 face->len_buildchar = 0;
2100 priv->blue_shift = 7;
2101 priv->blue_fuzz = 1;
2103 priv->expansion_factor = (FT_Fixed)( 0.06 * 0x10000L );
2104 priv->blue_scale = (FT_Fixed)( 0.039625 * 0x10000L * 1000 );
2106 parser = &loader.parser;
2107 error = T1_New_Parser( parser,
2114 error = parse_dict( face, &loader,
2115 parser->base_dict, parser->base_len );
2119 error = T1_Get_Private_Dict( parser, psaux );
2123 error = parse_dict( face, &loader,
2124 parser->private_dict, parser->private_len );
2128 /* ensure even-ness of `num_blue_values' */
2129 priv->num_blue_values &= ~1;
2131 #ifndef T1_CONFIG_OPTION_NO_MM_SUPPORT
2134 face->blend->num_default_design_vector != 0 &&
2135 face->blend->num_default_design_vector != face->blend->num_axis )
2137 /* we don't use it currently so just warn, reset, and ignore */
2138 FT_ERROR(( "T1_Open_Face(): /DesignVector contains %u entries "
2139 "while there are %u axes.\n",
2140 face->blend->num_default_design_vector,
2141 face->blend->num_axis ));
2143 face->blend->num_default_design_vector = 0;
2146 /* the following can happen for MM instances; we then treat the */
2147 /* font as a normal PS font */
2149 ( !face->blend->num_designs || !face->blend->num_axis ) )
2150 T1_Done_Blend( face );
2152 /* another safety check */
2158 for ( i = 0; i < face->blend->num_axis; i++ )
2159 if ( !face->blend->design_map[i].num_points )
2161 T1_Done_Blend( face );
2168 if ( face->len_buildchar > 0 )
2170 FT_Memory memory = face->root.memory;
2173 if ( FT_NEW_ARRAY( face->buildchar, face->len_buildchar ) )
2175 FT_ERROR(( "T1_Open_Face: cannot allocate BuildCharArray\n" ));
2176 face->len_buildchar = 0;
2182 face->len_buildchar = 0;
2184 #endif /* !T1_CONFIG_OPTION_NO_MM_SUPPORT */
2186 /* now, propagate the subrs, charstrings, and glyphnames tables */
2187 /* to the Type1 data */
2188 type1->num_glyphs = loader.num_glyphs;
2190 if ( loader.subrs.init )
2192 loader.subrs.init = 0;
2193 type1->num_subrs = loader.num_subrs;
2194 type1->subrs_block = loader.subrs.block;
2195 type1->subrs = loader.subrs.elements;
2196 type1->subrs_len = loader.subrs.lengths;
2199 if ( !IS_INCREMENTAL )
2200 if ( !loader.charstrings.init )
2202 FT_ERROR(( "T1_Open_Face: no `/CharStrings' array in face\n" ));
2203 error = FT_THROW( Invalid_File_Format );
2206 loader.charstrings.init = 0;
2207 type1->charstrings_block = loader.charstrings.block;
2208 type1->charstrings = loader.charstrings.elements;
2209 type1->charstrings_len = loader.charstrings.lengths;
2211 /* we copy the glyph names `block' and `elements' fields; */
2212 /* the `lengths' field must be released later */
2213 type1->glyph_names_block = loader.glyph_names.block;
2214 type1->glyph_names = (FT_String**)loader.glyph_names.elements;
2215 loader.glyph_names.block = 0;
2216 loader.glyph_names.elements = 0;
2218 /* we must now build type1.encoding when we have a custom array */
2219 if ( type1->encoding_type == T1_ENCODING_TYPE_ARRAY )
2221 FT_Int charcode, idx, min_char, max_char;
2222 FT_Byte* glyph_name;
2225 /* OK, we do the following: for each element in the encoding */
2226 /* table, look up the index of the glyph having the same name */
2227 /* the index is then stored in type1.encoding.char_index, and */
2228 /* the name to type1.encoding.char_name */
2234 for ( ; charcode < loader.encoding_table.max_elems; charcode++ )
2239 type1->encoding.char_index[charcode] = 0;
2240 type1->encoding.char_name [charcode] = (char *)".notdef";
2242 char_name = loader.encoding_table.elements[charcode];
2244 for ( idx = 0; idx < type1->num_glyphs; idx++ )
2246 glyph_name = (FT_Byte*)type1->glyph_names[idx];
2247 if ( ft_strcmp( (const char*)char_name,
2248 (const char*)glyph_name ) == 0 )
2250 type1->encoding.char_index[charcode] = (FT_UShort)idx;
2251 type1->encoding.char_name [charcode] = (char*)glyph_name;
2253 /* Change min/max encoded char only if glyph name is */
2255 if ( ft_strcmp( (const char*)".notdef",
2256 (const char*)glyph_name ) != 0 )
2258 if ( charcode < min_char )
2259 min_char = charcode;
2260 if ( charcode >= max_char )
2261 max_char = charcode + 1;
2268 type1->encoding.code_first = min_char;
2269 type1->encoding.code_last = max_char;
2270 type1->encoding.num_chars = loader.num_chars;
2274 t1_done_loader( &loader );