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 #ifdef FT_CONFIG_OPTION_INCREMENTAL
75 #define IS_INCREMENTAL ( 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 = T1_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 = T1_Err_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 = T1_Err_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 = ~0; /* 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 = ~0; /* Does not apply */
337 mmvar->axis[i].tag = ~0; /* 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 */
396 if ( factor > 0x10000L )
399 if ( ( n & ( 1 << m ) ) == 0 )
400 factor = 0x10000L - factor;
402 result = FT_MulFix( result, factor );
404 blend->weight_vector[n] = result;
414 FT_LOCAL_DEF( FT_Error )
415 T1_Set_MM_Design( T1_Face face,
419 PS_Blend blend = face->blend;
424 error = T1_Err_Invalid_Argument;
425 if ( blend && blend->num_axis == num_coords )
427 /* compute the blend coordinates through the blend design map */
428 FT_Fixed final_blends[T1_MAX_MM_DESIGNS];
431 for ( n = 0; n < blend->num_axis; n++ )
433 FT_Long design = coords[n];
435 PS_DesignMap map = blend->design_map + n;
436 FT_Long* designs = map->design_points;
437 FT_Fixed* blends = map->blend_points;
438 FT_Int before = -1, after = -1;
441 for ( p = 0; p < (FT_UInt)map->num_points; p++ )
443 FT_Long p_design = designs[p];
447 if ( design == p_design )
449 the_blend = blends[p];
453 if ( design < p_design )
462 /* now interpolate if necessary */
464 the_blend = blends[0];
466 else if ( after < 0 )
467 the_blend = blends[map->num_points - 1];
470 the_blend = FT_MulDiv( design - designs[before],
471 blends [after] - blends [before],
472 designs[after] - designs[before] );
475 final_blends[n] = the_blend;
478 error = T1_Set_MM_Blend( face, num_coords, final_blends );
485 /*************************************************************************/
487 /* Just a wrapper around T1_Set_MM_Design to support the different */
488 /* arguments needed by the GX var distortable fonts. */
490 FT_LOCAL_DEF( FT_Error )
491 T1_Set_Var_Design( T1_Face face,
495 FT_Long lcoords[4]; /* maximum axis count is 4 */
500 error = T1_Err_Invalid_Argument;
501 if ( num_coords <= 4 && num_coords > 0 )
503 for ( i = 0; i < num_coords; ++i )
504 lcoords[i] = FIXED_TO_INT( coords[i] );
505 error = T1_Set_MM_Design( face, num_coords, lcoords );
513 T1_Done_Blend( T1_Face face )
515 FT_Memory memory = face->root.memory;
516 PS_Blend blend = face->blend;
521 FT_UInt num_designs = blend->num_designs;
522 FT_UInt num_axis = blend->num_axis;
526 /* release design pos table */
527 FT_FREE( blend->design_pos[0] );
528 for ( n = 1; n < num_designs; n++ )
529 blend->design_pos[n] = NULL;
531 /* release blend `private' and `font info' dictionaries */
532 FT_FREE( blend->privates[1] );
533 FT_FREE( blend->font_infos[1] );
534 FT_FREE( blend->bboxes[1] );
536 for ( n = 0; n < num_designs; n++ )
538 blend->privates [n] = NULL;
539 blend->font_infos[n] = NULL;
540 blend->bboxes [n] = NULL;
543 /* release weight vectors */
544 FT_FREE( blend->weight_vector );
545 blend->default_weight_vector = NULL;
547 /* release axis names */
548 for ( n = 0; n < num_axis; n++ )
549 FT_FREE( blend->axis_names[n] );
551 /* release design map */
552 for ( n = 0; n < num_axis; n++ )
554 PS_DesignMap dmap = blend->design_map + n;
557 FT_FREE( dmap->design_points );
558 dmap->num_points = 0;
561 FT_FREE( face->blend );
567 parse_blend_axis_types( T1_Face face,
570 T1_TokenRec axis_tokens[T1_MAX_MM_AXIS];
572 FT_Error error = T1_Err_Ok;
577 /* take an array of objects */
578 T1_ToTokenArray( &loader->parser, axis_tokens,
579 T1_MAX_MM_AXIS, &num_axis );
582 error = T1_Err_Ignore;
585 if ( num_axis == 0 || num_axis > T1_MAX_MM_AXIS )
587 FT_ERROR(( "parse_blend_axis_types: incorrect number of axes: %d\n",
589 error = T1_Err_Invalid_File_Format;
593 /* allocate blend if necessary */
594 error = t1_allocate_blend( face, 0, (FT_UInt)num_axis );
599 memory = face->root.memory;
601 /* each token is an immediate containing the name of the axis */
602 for ( n = 0; n < num_axis; n++ )
604 T1_Token token = axis_tokens + n;
609 /* skip first slash, if any */
610 if ( token->start[0] == '/' )
613 len = token->limit - token->start;
616 error = T1_Err_Invalid_File_Format;
620 if ( FT_ALLOC( blend->axis_names[n], (FT_Long)( len + 1 ) ) )
623 name = (FT_Byte*)blend->axis_names[n];
624 FT_MEM_COPY( name, token->start, len );
629 loader->parser.root.error = error;
634 parse_blend_design_positions( T1_Face face,
637 T1_TokenRec design_tokens[T1_MAX_MM_DESIGNS];
640 T1_Parser parser = &loader->parser;
642 FT_Error error = T1_Err_Ok;
646 /* get the array of design tokens -- compute number of designs */
647 T1_ToTokenArray( parser, design_tokens,
648 T1_MAX_MM_DESIGNS, &num_designs );
649 if ( num_designs < 0 )
651 error = T1_Err_Ignore;
654 if ( num_designs == 0 || num_designs > T1_MAX_MM_DESIGNS )
656 FT_ERROR(( "parse_blend_design_positions:"
657 " incorrect number of designs: %d\n",
659 error = T1_Err_Invalid_File_Format;
664 FT_Byte* old_cursor = parser->root.cursor;
665 FT_Byte* old_limit = parser->root.limit;
670 num_axis = 0; /* make compiler happy */
672 for ( n = 0; n < num_designs; n++ )
674 T1_TokenRec axis_tokens[T1_MAX_MM_AXIS];
679 /* read axis/coordinates tokens */
680 token = design_tokens + n;
681 parser->root.cursor = token->start;
682 parser->root.limit = token->limit;
683 T1_ToTokenArray( parser, axis_tokens, T1_MAX_MM_AXIS, &n_axis );
687 if ( n_axis <= 0 || n_axis > T1_MAX_MM_AXIS )
689 FT_ERROR(( "parse_blend_design_positions:"
690 " invalid number of axes: %d\n",
692 error = T1_Err_Invalid_File_Format;
697 error = t1_allocate_blend( face, num_designs, num_axis );
702 else if ( n_axis != num_axis )
704 FT_ERROR(( "parse_blend_design_positions: incorrect table\n" ));
705 error = T1_Err_Invalid_File_Format;
709 /* now read each axis token into the design position */
710 for ( axis = 0; axis < n_axis; axis++ )
712 T1_Token token2 = axis_tokens + axis;
715 parser->root.cursor = token2->start;
716 parser->root.limit = token2->limit;
717 blend->design_pos[n][axis] = T1_ToFixed( parser, 0 );
721 loader->parser.root.cursor = old_cursor;
722 loader->parser.root.limit = old_limit;
726 loader->parser.root.error = error;
731 parse_blend_design_map( T1_Face face,
734 FT_Error error = T1_Err_Ok;
735 T1_Parser parser = &loader->parser;
737 T1_TokenRec axis_tokens[T1_MAX_MM_AXIS];
741 FT_Memory memory = face->root.memory;
744 T1_ToTokenArray( parser, axis_tokens,
745 T1_MAX_MM_AXIS, &num_axis );
748 error = T1_Err_Ignore;
751 if ( num_axis == 0 || num_axis > T1_MAX_MM_AXIS )
753 FT_ERROR(( "parse_blend_design_map: incorrect number of axes: %d\n",
755 error = T1_Err_Invalid_File_Format;
759 old_cursor = parser->root.cursor;
760 old_limit = parser->root.limit;
762 error = t1_allocate_blend( face, 0, num_axis );
767 /* now read each axis design map */
768 for ( n = 0; n < num_axis; n++ )
770 PS_DesignMap map = blend->design_map + n;
772 T1_TokenRec point_tokens[T1_MAX_MM_MAP_POINTS];
773 FT_Int p, num_points;
776 axis_token = axis_tokens + n;
778 parser->root.cursor = axis_token->start;
779 parser->root.limit = axis_token->limit;
780 T1_ToTokenArray( parser, point_tokens,
781 T1_MAX_MM_MAP_POINTS, &num_points );
783 if ( num_points <= 0 || num_points > T1_MAX_MM_MAP_POINTS )
785 FT_ERROR(( "parse_blend_design_map: incorrect table\n" ));
786 error = T1_Err_Invalid_File_Format;
790 /* allocate design map data */
791 if ( FT_NEW_ARRAY( map->design_points, num_points * 2 ) )
793 map->blend_points = map->design_points + num_points;
794 map->num_points = (FT_Byte)num_points;
796 for ( p = 0; p < num_points; p++ )
798 T1_Token point_token;
801 point_token = point_tokens + p;
803 /* don't include delimiting brackets */
804 parser->root.cursor = point_token->start + 1;
805 parser->root.limit = point_token->limit - 1;
807 map->design_points[p] = T1_ToInt( parser );
808 map->blend_points [p] = T1_ToFixed( parser, 0 );
812 parser->root.cursor = old_cursor;
813 parser->root.limit = old_limit;
816 parser->root.error = error;
821 parse_weight_vector( T1_Face face,
824 T1_TokenRec design_tokens[T1_MAX_MM_DESIGNS];
826 FT_Error error = T1_Err_Ok;
827 T1_Parser parser = &loader->parser;
828 PS_Blend blend = face->blend;
835 T1_ToTokenArray( parser, design_tokens,
836 T1_MAX_MM_DESIGNS, &num_designs );
837 if ( num_designs < 0 )
839 error = T1_Err_Ignore;
842 if ( num_designs == 0 || num_designs > T1_MAX_MM_DESIGNS )
844 FT_ERROR(( "parse_weight_vector:"
845 " incorrect number of designs: %d\n",
847 error = T1_Err_Invalid_File_Format;
851 if ( !blend || !blend->num_designs )
853 error = t1_allocate_blend( face, num_designs, 0 );
858 else if ( blend->num_designs != (FT_UInt)num_designs )
860 FT_ERROR(( "parse_weight_vector:"
861 " /BlendDesignPosition and /WeightVector have\n"
863 " different number of elements\n" ));
864 error = T1_Err_Invalid_File_Format;
868 old_cursor = parser->root.cursor;
869 old_limit = parser->root.limit;
871 for ( n = 0; n < num_designs; n++ )
873 token = design_tokens + n;
874 parser->root.cursor = token->start;
875 parser->root.limit = token->limit;
877 blend->default_weight_vector[n] =
878 blend->weight_vector[n] = T1_ToFixed( parser, 0 );
881 parser->root.cursor = old_cursor;
882 parser->root.limit = old_limit;
885 parser->root.error = error;
889 /* e.g., /BuildCharArray [0 0 0 0 0 0 0 0] def */
890 /* we're only interested in the number of array elements */
892 parse_buildchar( T1_Face face,
895 face->len_buildchar = T1_ToFixedArray( &loader->parser, 0, NULL, 0 );
901 #endif /* !T1_CONFIG_OPTION_NO_MM_SUPPORT */
906 /*************************************************************************/
907 /*************************************************************************/
909 /***** TYPE 1 SYMBOL PARSING *****/
911 /*************************************************************************/
912 /*************************************************************************/
915 t1_load_keyword( T1_Face face,
917 const T1_Field field )
923 PS_Blend blend = face->blend;
926 if ( blend && blend->num_designs == 0 )
929 /* if the keyword has a dedicated callback, call it */
930 if ( field->type == T1_FIELD_TYPE_CALLBACK )
932 field->reader( (FT_Face)face, loader );
933 error = loader->parser.root.error;
937 /* now, the keyword is either a simple field, or a table of fields; */
938 /* we are now going to take care of it */
939 switch ( field->location )
941 case T1_FIELD_LOCATION_FONT_INFO:
942 dummy_object = &face->type1.font_info;
943 objects = &dummy_object;
948 objects = (void**)blend->font_infos;
949 max_objects = blend->num_designs;
953 case T1_FIELD_LOCATION_FONT_EXTRA:
954 dummy_object = &face->type1.font_extra;
955 objects = &dummy_object;
959 case T1_FIELD_LOCATION_PRIVATE:
960 dummy_object = &face->type1.private_dict;
961 objects = &dummy_object;
966 objects = (void**)blend->privates;
967 max_objects = blend->num_designs;
971 case T1_FIELD_LOCATION_BBOX:
972 dummy_object = &face->type1.font_bbox;
973 objects = &dummy_object;
978 objects = (void**)blend->bboxes;
979 max_objects = blend->num_designs;
983 case T1_FIELD_LOCATION_LOADER:
984 dummy_object = loader;
985 objects = &dummy_object;
989 case T1_FIELD_LOCATION_FACE:
991 objects = &dummy_object;
995 #ifndef T1_CONFIG_OPTION_NO_MM_SUPPORT
996 case T1_FIELD_LOCATION_BLEND:
997 dummy_object = face->blend;
998 objects = &dummy_object;
1004 dummy_object = &face->type1;
1005 objects = &dummy_object;
1011 if ( field->type == T1_FIELD_TYPE_INTEGER_ARRAY ||
1012 field->type == T1_FIELD_TYPE_FIXED_ARRAY )
1013 error = T1_Load_Field_Table( &loader->parser, field,
1014 objects, max_objects, 0 );
1016 error = T1_Load_Field( &loader->parser, field,
1017 objects, max_objects, 0 );
1021 FT_TRACE1(( "t1_load_keyword: ignoring keyword `%s'"
1022 " which is not valid at this point\n"
1023 " (probably due to missing keywords)\n",
1034 parse_private( T1_Face face,
1039 loader->keywords_encountered |= T1_PRIVATE;
1044 read_binary_data( T1_Parser parser,
1047 FT_Bool incremental )
1050 FT_Byte* limit = parser->root.limit;
1053 /* the binary data has one of the following formats */
1055 /* `size' [white*] RD white ....... ND */
1056 /* `size' [white*] -| white ....... |- */
1059 T1_Skip_Spaces( parser );
1061 cur = parser->root.cursor;
1063 if ( cur < limit && ft_isdigit( *cur ) )
1065 FT_Long s = T1_ToInt( parser );
1068 T1_Skip_PS_Token( parser ); /* `RD' or `-|' or something else */
1070 /* there is only one whitespace char after the */
1071 /* `RD' or `-|' token */
1072 *base = parser->root.cursor + 1;
1074 if ( s >= 0 && s < limit - *base )
1076 parser->root.cursor += s + 1;
1078 return !parser->root.error;
1084 FT_ERROR(( "read_binary_data: invalid size field\n" ));
1085 parser->root.error = T1_Err_Invalid_File_Format;
1092 /* We now define the routines to handle the `/Encoding', `/Subrs', */
1093 /* and `/CharStrings' dictionaries. */
1096 t1_parse_font_matrix( T1_Face face,
1099 T1_Parser parser = &loader->parser;
1100 FT_Matrix* matrix = &face->type1.font_matrix;
1101 FT_Vector* offset = &face->type1.font_offset;
1102 FT_Face root = (FT_Face)&face->root;
1104 FT_Fixed temp_scale;
1108 result = T1_ToFixedArray( parser, 6, temp, 3 );
1112 parser->root.error = T1_Err_Invalid_File_Format;
1116 temp_scale = FT_ABS( temp[3] );
1118 if ( temp_scale == 0 )
1120 FT_ERROR(( "t1_parse_font_matrix: invalid font matrix\n" ));
1121 parser->root.error = T1_Err_Invalid_File_Format;
1125 /* Set Units per EM based on FontMatrix values. We set the value to */
1126 /* 1000 / temp_scale, because temp_scale was already multiplied by */
1127 /* 1000 (in t1_tofixed, from psobjs.c). */
1129 root->units_per_EM = (FT_UShort)FT_DivFix( 1000, temp_scale );
1131 /* we need to scale the values by 1.0/temp_scale */
1132 if ( temp_scale != 0x10000L )
1134 temp[0] = FT_DivFix( temp[0], temp_scale );
1135 temp[1] = FT_DivFix( temp[1], temp_scale );
1136 temp[2] = FT_DivFix( temp[2], temp_scale );
1137 temp[4] = FT_DivFix( temp[4], temp_scale );
1138 temp[5] = FT_DivFix( temp[5], temp_scale );
1139 temp[3] = temp[3] < 0 ? -0x10000L : 0x10000L;
1142 matrix->xx = temp[0];
1143 matrix->yx = temp[1];
1144 matrix->xy = temp[2];
1145 matrix->yy = temp[3];
1147 /* note that the offsets must be expressed in integer font units */
1148 offset->x = temp[4] >> 16;
1149 offset->y = temp[5] >> 16;
1154 parse_encoding( T1_Face face,
1157 T1_Parser parser = &loader->parser;
1159 FT_Byte* limit = parser->root.limit;
1161 PSAux_Service psaux = (PSAux_Service)face->psaux;
1164 T1_Skip_Spaces( parser );
1165 cur = parser->root.cursor;
1168 FT_ERROR(( "parse_encoding: out of bounds\n" ));
1169 parser->root.error = T1_Err_Invalid_File_Format;
1173 /* if we have a number or `[', the encoding is an array, */
1174 /* and we must load it now */
1175 if ( ft_isdigit( *cur ) || *cur == '[' )
1177 T1_Encoding encode = &face->type1.encoding;
1179 PS_Table char_table = &loader->encoding_table;
1180 FT_Memory memory = parser->root.memory;
1182 FT_Bool only_immediates = 0;
1185 /* read the number of entries in the encoding; should be 256 */
1189 only_immediates = 1;
1190 parser->root.cursor++;
1193 count = (FT_Int)T1_ToInt( parser );
1195 T1_Skip_Spaces( parser );
1196 if ( parser->root.cursor >= limit )
1199 /* we use a T1_Table to store our charnames */
1200 loader->num_chars = encode->num_chars = count;
1201 if ( FT_NEW_ARRAY( encode->char_index, count ) ||
1202 FT_NEW_ARRAY( encode->char_name, count ) ||
1203 FT_SET_ERROR( psaux->ps_table_funcs->init(
1204 char_table, count, memory ) ) )
1206 parser->root.error = error;
1210 /* We need to `zero' out encoding_table.elements */
1211 for ( n = 0; n < count; n++ )
1213 char* notdef = (char *)".notdef";
1216 T1_Add_Table( char_table, n, notdef, 8 );
1219 /* Now we need to read records of the form */
1221 /* ... charcode /charname ... */
1223 /* for each entry in our table. */
1225 /* We simply look for a number followed by an immediate */
1226 /* name. Note that this ignores correctly the sequence */
1227 /* that is often seen in type1 fonts: */
1229 /* 0 1 255 { 1 index exch /.notdef put } for dup */
1231 /* used to clean the encoding array before anything else. */
1233 /* Alternatively, if the array is directly given as */
1235 /* /Encoding [ ... ] */
1237 /* we only read immediates. */
1240 T1_Skip_Spaces( parser );
1242 while ( parser->root.cursor < limit )
1244 cur = parser->root.cursor;
1246 /* we stop when we encounter a `def' or `]' */
1247 if ( *cur == 'd' && cur + 3 < limit )
1249 if ( cur[1] == 'e' &&
1251 IS_PS_DELIM( cur[3] ) )
1253 FT_TRACE6(( "encoding end\n" ));
1260 FT_TRACE6(( "encoding end\n" ));
1265 /* check whether we've found an entry */
1266 if ( ft_isdigit( *cur ) || only_immediates )
1271 if ( only_immediates )
1275 charcode = (FT_Int)T1_ToInt( parser );
1276 T1_Skip_Spaces( parser );
1279 cur = parser->root.cursor;
1281 if ( cur + 2 < limit && *cur == '/' && n < count )
1288 parser->root.cursor = cur;
1289 T1_Skip_PS_Token( parser );
1290 if ( parser->root.cursor >= limit )
1292 if ( parser->root.error )
1295 len = parser->root.cursor - cur;
1297 parser->root.error = T1_Add_Table( char_table, charcode,
1299 if ( parser->root.error )
1301 char_table->elements[charcode][len] = '\0';
1305 else if ( only_immediates )
1307 /* Since the current position is not updated for */
1308 /* immediates-only mode we would get an infinite loop if */
1309 /* we don't do anything here. */
1311 /* This encoding array is not valid according to the type1 */
1312 /* specification (it might be an encoding for a CID type1 */
1313 /* font, however), so we conclude that this font is NOT a */
1315 parser->root.error = FT_Err_Unknown_File_Format;
1321 T1_Skip_PS_Token( parser );
1322 if ( parser->root.error )
1326 T1_Skip_Spaces( parser );
1329 face->type1.encoding_type = T1_ENCODING_TYPE_ARRAY;
1330 parser->root.cursor = cur;
1333 /* Otherwise, we should have either `StandardEncoding', */
1334 /* `ExpertEncoding', or `ISOLatin1Encoding' */
1337 if ( cur + 17 < limit &&
1338 ft_strncmp( (const char*)cur, "StandardEncoding", 16 ) == 0 )
1339 face->type1.encoding_type = T1_ENCODING_TYPE_STANDARD;
1341 else if ( cur + 15 < limit &&
1342 ft_strncmp( (const char*)cur, "ExpertEncoding", 14 ) == 0 )
1343 face->type1.encoding_type = T1_ENCODING_TYPE_EXPERT;
1345 else if ( cur + 18 < limit &&
1346 ft_strncmp( (const char*)cur, "ISOLatin1Encoding", 17 ) == 0 )
1347 face->type1.encoding_type = T1_ENCODING_TYPE_ISOLATIN1;
1350 parser->root.error = T1_Err_Ignore;
1356 parse_subrs( T1_Face face,
1359 T1_Parser parser = &loader->parser;
1360 PS_Table table = &loader->subrs;
1361 FT_Memory memory = parser->root.memory;
1365 PSAux_Service psaux = (PSAux_Service)face->psaux;
1368 T1_Skip_Spaces( parser );
1370 /* test for empty array */
1371 if ( parser->root.cursor < parser->root.limit &&
1372 *parser->root.cursor == '[' )
1374 T1_Skip_PS_Token( parser );
1375 T1_Skip_Spaces ( parser );
1376 if ( parser->root.cursor >= parser->root.limit ||
1377 *parser->root.cursor != ']' )
1378 parser->root.error = T1_Err_Invalid_File_Format;
1382 num_subrs = (FT_Int)T1_ToInt( parser );
1384 /* position the parser right before the `dup' of the first subr */
1385 T1_Skip_PS_Token( parser ); /* `array' */
1386 if ( parser->root.error )
1388 T1_Skip_Spaces( parser );
1390 /* initialize subrs array -- with synthetic fonts it is possible */
1391 /* we get here twice */
1392 if ( !loader->num_subrs )
1394 error = psaux->ps_table_funcs->init( table, num_subrs, memory );
1399 /* the format is simple: */
1401 /* `index' + binary data */
1409 /* If we are out of data, or if the next token isn't `dup', */
1411 if ( parser->root.cursor + 4 >= parser->root.limit ||
1412 ft_strncmp( (char*)parser->root.cursor, "dup", 3 ) != 0 )
1415 T1_Skip_PS_Token( parser ); /* `dup' */
1417 idx = T1_ToInt( parser );
1419 if ( !read_binary_data( parser, &size, &base, IS_INCREMENTAL ) )
1422 /* The binary string is followed by one token, e.g. `NP' */
1423 /* (bound to `noaccess put') or by two separate tokens: */
1424 /* `noaccess' & `put'. We position the parser right */
1425 /* before the next `dup', if any. */
1426 T1_Skip_PS_Token( parser ); /* `NP' or `|' or `noaccess' */
1427 if ( parser->root.error )
1429 T1_Skip_Spaces ( parser );
1431 if ( parser->root.cursor + 4 < parser->root.limit &&
1432 ft_strncmp( (char*)parser->root.cursor, "put", 3 ) == 0 )
1434 T1_Skip_PS_Token( parser ); /* skip `put' */
1435 T1_Skip_Spaces ( parser );
1438 /* with synthetic fonts it is possible we get here twice */
1439 if ( loader->num_subrs )
1442 /* some fonts use a value of -1 for lenIV to indicate that */
1443 /* the charstrings are unencoded */
1445 /* thanks to Tom Kacvinsky for pointing this out */
1447 if ( face->type1.private_dict.lenIV >= 0 )
1452 /* some fonts define empty subr records -- this is not totally */
1453 /* compliant to the specification (which says they should at */
1454 /* least contain a `return'), but we support them anyway */
1455 if ( size < face->type1.private_dict.lenIV )
1457 error = T1_Err_Invalid_File_Format;
1461 /* t1_decrypt() shouldn't write to base -- make temporary copy */
1462 if ( FT_ALLOC( temp, size ) )
1464 FT_MEM_COPY( temp, base, size );
1465 psaux->t1_decrypt( temp, size, 4330 );
1466 size -= face->type1.private_dict.lenIV;
1467 error = T1_Add_Table( table, (FT_Int)idx,
1468 temp + face->type1.private_dict.lenIV, size );
1472 error = T1_Add_Table( table, (FT_Int)idx, base, size );
1477 if ( !loader->num_subrs )
1478 loader->num_subrs = num_subrs;
1483 parser->root.error = error;
1487 #define TABLE_EXTEND 5
1491 parse_charstrings( T1_Face face,
1494 T1_Parser parser = &loader->parser;
1495 PS_Table code_table = &loader->charstrings;
1496 PS_Table name_table = &loader->glyph_names;
1497 PS_Table swap_table = &loader->swap_table;
1498 FT_Memory memory = parser->root.memory;
1501 PSAux_Service psaux = (PSAux_Service)face->psaux;
1504 FT_Byte* limit = parser->root.limit;
1505 FT_Int n, num_glyphs;
1506 FT_UInt notdef_index = 0;
1507 FT_Byte notdef_found = 0;
1510 num_glyphs = (FT_Int)T1_ToInt( parser );
1511 if ( num_glyphs < 0 )
1513 error = T1_Err_Invalid_File_Format;
1517 /* some fonts like Optima-Oblique not only define the /CharStrings */
1518 /* array but access it also */
1519 if ( num_glyphs == 0 || parser->root.error )
1522 /* initialize tables, leaving space for addition of .notdef, */
1523 /* if necessary, and a few other glyphs to handle buggy */
1524 /* fonts which have more glyphs than specified. */
1526 /* for some non-standard fonts like `Optima' which provides */
1527 /* different outlines depending on the resolution it is */
1528 /* possible to get here twice */
1529 if ( !loader->num_glyphs )
1531 error = psaux->ps_table_funcs->init(
1532 code_table, num_glyphs + 1 + TABLE_EXTEND, memory );
1536 error = psaux->ps_table_funcs->init(
1537 name_table, num_glyphs + 1 + TABLE_EXTEND, memory );
1541 /* Initialize table for swapping index notdef_index and */
1542 /* index 0 names and codes (if necessary). */
1544 error = psaux->ps_table_funcs->init( swap_table, 4, memory );
1557 /* the format is simple: */
1558 /* `/glyphname' + binary data */
1560 T1_Skip_Spaces( parser );
1562 cur = parser->root.cursor;
1566 /* we stop when we find a `def' or `end' keyword */
1567 if ( cur + 3 < limit && IS_PS_DELIM( cur[3] ) )
1569 if ( cur[0] == 'd' &&
1573 /* There are fonts which have this: */
1575 /* /CharStrings 118 dict def */
1577 /* CharStrings begin */
1580 /* To catch this we ignore `def' if */
1581 /* no charstring has actually been */
1587 if ( cur[0] == 'e' &&
1593 T1_Skip_PS_Token( parser );
1594 if ( parser->root.error )
1602 if ( cur + 1 >= limit )
1604 error = T1_Err_Invalid_File_Format;
1608 cur++; /* skip `/' */
1609 len = parser->root.cursor - cur;
1611 if ( !read_binary_data( parser, &size, &base, IS_INCREMENTAL ) )
1614 /* for some non-standard fonts like `Optima' which provides */
1615 /* different outlines depending on the resolution it is */
1616 /* possible to get here twice */
1617 if ( loader->num_glyphs )
1620 error = T1_Add_Table( name_table, n, cur, len + 1 );
1624 /* add a trailing zero to the name table */
1625 name_table->elements[n][len] = '\0';
1627 /* record index of /.notdef */
1629 ft_strcmp( ".notdef",
1630 (const char*)(name_table->elements[n]) ) == 0 )
1636 if ( face->type1.private_dict.lenIV >= 0 &&
1637 n < num_glyphs + TABLE_EXTEND )
1642 if ( size <= face->type1.private_dict.lenIV )
1644 error = T1_Err_Invalid_File_Format;
1648 /* t1_decrypt() shouldn't write to base -- make temporary copy */
1649 if ( FT_ALLOC( temp, size ) )
1651 FT_MEM_COPY( temp, base, size );
1652 psaux->t1_decrypt( temp, size, 4330 );
1653 size -= face->type1.private_dict.lenIV;
1654 error = T1_Add_Table( code_table, n,
1655 temp + face->type1.private_dict.lenIV, size );
1659 error = T1_Add_Table( code_table, n, base, size );
1667 loader->num_glyphs = n;
1669 /* if /.notdef is found but does not occupy index 0, do our magic. */
1670 if ( notdef_found &&
1671 ft_strcmp( ".notdef", (const char*)name_table->elements[0] ) )
1673 /* Swap glyph in index 0 with /.notdef glyph. First, add index 0 */
1674 /* name and code entries to swap_table. Then place notdef_index */
1675 /* name and code entries into swap_table. Then swap name and code */
1676 /* entries at indices notdef_index and 0 using values stored in */
1680 error = T1_Add_Table( swap_table, 0,
1681 name_table->elements[0],
1682 name_table->lengths [0] );
1687 error = T1_Add_Table( swap_table, 1,
1688 code_table->elements[0],
1689 code_table->lengths [0] );
1693 /* Index notdef_index name */
1694 error = T1_Add_Table( swap_table, 2,
1695 name_table->elements[notdef_index],
1696 name_table->lengths [notdef_index] );
1700 /* Index notdef_index code */
1701 error = T1_Add_Table( swap_table, 3,
1702 code_table->elements[notdef_index],
1703 code_table->lengths [notdef_index] );
1707 error = T1_Add_Table( name_table, notdef_index,
1708 swap_table->elements[0],
1709 swap_table->lengths [0] );
1713 error = T1_Add_Table( code_table, notdef_index,
1714 swap_table->elements[1],
1715 swap_table->lengths [1] );
1719 error = T1_Add_Table( name_table, 0,
1720 swap_table->elements[2],
1721 swap_table->lengths [2] );
1725 error = T1_Add_Table( code_table, 0,
1726 swap_table->elements[3],
1727 swap_table->lengths [3] );
1732 else if ( !notdef_found )
1734 /* notdef_index is already 0, or /.notdef is undefined in */
1735 /* charstrings dictionary. Worry about /.notdef undefined. */
1736 /* We take index 0 and add it to the end of the table(s) */
1737 /* and add our own /.notdef glyph to index 0. */
1739 /* 0 333 hsbw endchar */
1740 FT_Byte notdef_glyph[] = { 0x8B, 0xF7, 0xE1, 0x0D, 0x0E };
1741 char* notdef_name = (char *)".notdef";
1744 error = T1_Add_Table( swap_table, 0,
1745 name_table->elements[0],
1746 name_table->lengths [0] );
1750 error = T1_Add_Table( swap_table, 1,
1751 code_table->elements[0],
1752 code_table->lengths [0] );
1756 error = T1_Add_Table( name_table, 0, notdef_name, 8 );
1760 error = T1_Add_Table( code_table, 0, notdef_glyph, 5 );
1765 error = T1_Add_Table( name_table, n,
1766 swap_table->elements[0],
1767 swap_table->lengths [0] );
1771 error = T1_Add_Table( code_table, n,
1772 swap_table->elements[1],
1773 swap_table->lengths [1] );
1777 /* we added a glyph. */
1778 loader->num_glyphs += 1;
1784 parser->root.error = error;
1788 /*************************************************************************/
1790 /* Define the token field static variables. This is a set of */
1791 /* T1_FieldRec variables. */
1793 /*************************************************************************/
1797 const T1_FieldRec t1_keywords[] =
1800 #include "t1tokens.h"
1802 /* now add the special functions... */
1803 T1_FIELD_CALLBACK( "FontMatrix", t1_parse_font_matrix,
1804 T1_FIELD_DICT_FONTDICT )
1805 T1_FIELD_CALLBACK( "Encoding", parse_encoding,
1806 T1_FIELD_DICT_FONTDICT )
1807 T1_FIELD_CALLBACK( "Subrs", parse_subrs,
1808 T1_FIELD_DICT_PRIVATE )
1809 T1_FIELD_CALLBACK( "CharStrings", parse_charstrings,
1810 T1_FIELD_DICT_PRIVATE )
1811 T1_FIELD_CALLBACK( "Private", parse_private,
1812 T1_FIELD_DICT_FONTDICT )
1814 #ifndef T1_CONFIG_OPTION_NO_MM_SUPPORT
1815 T1_FIELD_CALLBACK( "BlendDesignPositions", parse_blend_design_positions,
1816 T1_FIELD_DICT_FONTDICT )
1817 T1_FIELD_CALLBACK( "BlendDesignMap", parse_blend_design_map,
1818 T1_FIELD_DICT_FONTDICT )
1819 T1_FIELD_CALLBACK( "BlendAxisTypes", parse_blend_axis_types,
1820 T1_FIELD_DICT_FONTDICT )
1821 T1_FIELD_CALLBACK( "WeightVector", parse_weight_vector,
1822 T1_FIELD_DICT_FONTDICT )
1823 T1_FIELD_CALLBACK( "BuildCharArray", parse_buildchar,
1824 T1_FIELD_DICT_PRIVATE )
1827 { 0, T1_FIELD_LOCATION_CID_INFO, T1_FIELD_TYPE_NONE, 0, 0, 0, 0, 0, 0 }
1831 #define T1_FIELD_COUNT \
1832 ( sizeof ( t1_keywords ) / sizeof ( t1_keywords[0] ) )
1836 parse_dict( T1_Face face,
1841 T1_Parser parser = &loader->parser;
1842 FT_Byte *limit, *start_binary = NULL;
1843 FT_Bool have_integer = 0;
1846 parser->root.cursor = base;
1847 parser->root.limit = base + size;
1848 parser->root.error = T1_Err_Ok;
1850 limit = parser->root.limit;
1852 T1_Skip_Spaces( parser );
1854 while ( parser->root.cursor < limit )
1859 cur = parser->root.cursor;
1861 /* look for `eexec' */
1862 if ( IS_PS_TOKEN( cur, limit, "eexec" ) )
1865 /* look for `closefile' which ends the eexec section */
1866 else if ( IS_PS_TOKEN( cur, limit, "closefile" ) )
1869 /* in a synthetic font the base font starts after a */
1870 /* `FontDictionary' token that is placed after a Private dict */
1871 else if ( IS_PS_TOKEN( cur, limit, "FontDirectory" ) )
1873 if ( loader->keywords_encountered & T1_PRIVATE )
1874 loader->keywords_encountered |=
1875 T1_FONTDIR_AFTER_PRIVATE;
1876 parser->root.cursor += 13;
1879 /* check whether we have an integer */
1880 else if ( ft_isdigit( *cur ) )
1883 T1_Skip_PS_Token( parser );
1884 if ( parser->root.error )
1889 /* in valid Type 1 fonts we don't see `RD' or `-|' directly */
1890 /* since those tokens are handled by parse_subrs and */
1891 /* parse_charstrings */
1892 else if ( *cur == 'R' && cur + 6 < limit && *(cur + 1) == 'D' &&
1899 parser->root.cursor = start_binary;
1900 if ( !read_binary_data( parser, &s, &b, IS_INCREMENTAL ) )
1901 return T1_Err_Invalid_File_Format;
1905 else if ( *cur == '-' && cur + 6 < limit && *(cur + 1) == '|' &&
1912 parser->root.cursor = start_binary;
1913 if ( !read_binary_data( parser, &s, &b, IS_INCREMENTAL ) )
1914 return T1_Err_Invalid_File_Format;
1918 /* look for immediates */
1919 else if ( *cur == '/' && cur + 2 < limit )
1926 parser->root.cursor = cur;
1927 T1_Skip_PS_Token( parser );
1928 if ( parser->root.error )
1931 len = parser->root.cursor - cur;
1933 if ( len > 0 && len < 22 && parser->root.cursor < limit )
1935 /* now compare the immediate name to the keyword table */
1936 T1_Field keyword = (T1_Field)t1_keywords;
1944 name = (FT_Byte*)keyword->ident;
1948 if ( cur[0] == name[0] &&
1949 len == (FT_PtrDist)ft_strlen( (const char *)name ) &&
1950 ft_memcmp( cur, name, len ) == 0 )
1952 /* We found it -- run the parsing callback! */
1953 /* We record every instance of every field */
1954 /* (until we reach the base font of a */
1955 /* synthetic font) to deal adequately with */
1956 /* multiple master fonts; this is also */
1957 /* necessary because later PostScript */
1958 /* definitions override earlier ones. */
1960 /* Once we encounter `FontDirectory' after */
1961 /* `/Private', we know that this is a synthetic */
1962 /* font; except for `/CharStrings' we are not */
1963 /* interested in anything that follows this */
1964 /* `FontDirectory'. */
1966 /* MM fonts have more than one /Private token at */
1967 /* the top level; let's hope that all the junk */
1968 /* that follows the first /Private token is not */
1969 /* interesting to us. */
1971 /* According to Adobe Tech Note #5175 (CID-Keyed */
1972 /* Font Installation for ATM Software) a `begin' */
1973 /* must be followed by exactly one `end', and */
1974 /* `begin' -- `end' pairs must be accurately */
1975 /* paired. We could use this to distinguish */
1976 /* between the global Private and the Private */
1977 /* dict that is a member of the Blend dict. */
1979 const FT_UInt dict =
1980 ( loader->keywords_encountered & T1_PRIVATE )
1981 ? T1_FIELD_DICT_PRIVATE
1982 : T1_FIELD_DICT_FONTDICT;
1984 if ( !( dict & keyword->dict ) )
1986 FT_TRACE1(( "parse_dict: found `%s' but ignoring it"
1987 " since it is in the wrong dictionary\n",
1992 if ( !( loader->keywords_encountered &
1993 T1_FONTDIR_AFTER_PRIVATE ) ||
1994 ft_strcmp( (const char*)name, "CharStrings" ) == 0 )
1996 parser->root.error = t1_load_keyword( face,
1999 if ( parser->root.error != T1_Err_Ok )
2001 if ( FT_ERROR_BASE( parser->root.error ) == FT_Err_Ignore )
2002 parser->root.error = T1_Err_Ok;
2004 return parser->root.error;
2018 T1_Skip_PS_Token( parser );
2019 if ( parser->root.error )
2024 T1_Skip_Spaces( parser );
2028 return parser->root.error;
2033 t1_init_loader( T1_Loader loader,
2038 FT_MEM_ZERO( loader, sizeof ( *loader ) );
2039 loader->num_glyphs = 0;
2040 loader->num_chars = 0;
2042 /* initialize the tables -- simply set their `init' field to 0 */
2043 loader->encoding_table.init = 0;
2044 loader->charstrings.init = 0;
2045 loader->glyph_names.init = 0;
2046 loader->subrs.init = 0;
2047 loader->swap_table.init = 0;
2048 loader->fontdata = 0;
2049 loader->keywords_encountered = 0;
2054 t1_done_loader( T1_Loader loader )
2056 T1_Parser parser = &loader->parser;
2059 /* finalize tables */
2060 T1_Release_Table( &loader->encoding_table );
2061 T1_Release_Table( &loader->charstrings );
2062 T1_Release_Table( &loader->glyph_names );
2063 T1_Release_Table( &loader->swap_table );
2064 T1_Release_Table( &loader->subrs );
2066 /* finalize parser */
2067 T1_Finalize_Parser( parser );
2071 FT_LOCAL_DEF( FT_Error )
2072 T1_Open_Face( T1_Face face )
2074 T1_LoaderRec loader;
2076 T1_Font type1 = &face->type1;
2077 PS_Private priv = &type1->private_dict;
2080 PSAux_Service psaux = (PSAux_Service)face->psaux;
2083 t1_init_loader( &loader, face );
2085 /* default values */
2088 face->len_buildchar = 0;
2090 priv->blue_shift = 7;
2091 priv->blue_fuzz = 1;
2093 priv->expansion_factor = (FT_Fixed)( 0.06 * 0x10000L );
2094 priv->blue_scale = (FT_Fixed)( 0.039625 * 0x10000L * 1000 );
2096 parser = &loader.parser;
2097 error = T1_New_Parser( parser,
2104 error = parse_dict( face, &loader,
2105 parser->base_dict, parser->base_len );
2109 error = T1_Get_Private_Dict( parser, psaux );
2113 error = parse_dict( face, &loader,
2114 parser->private_dict, parser->private_len );
2118 /* ensure even-ness of `num_blue_values' */
2119 priv->num_blue_values &= ~1;
2121 #ifndef T1_CONFIG_OPTION_NO_MM_SUPPORT
2124 face->blend->num_default_design_vector != 0 &&
2125 face->blend->num_default_design_vector != face->blend->num_axis )
2127 /* we don't use it currently so just warn, reset, and ignore */
2128 FT_ERROR(( "T1_Open_Face(): /DesignVector contains %u entries "
2129 "while there are %u axes.\n",
2130 face->blend->num_default_design_vector,
2131 face->blend->num_axis ));
2133 face->blend->num_default_design_vector = 0;
2136 /* the following can happen for MM instances; we then treat the */
2137 /* font as a normal PS font */
2139 ( !face->blend->num_designs || !face->blend->num_axis ) )
2140 T1_Done_Blend( face );
2142 /* another safety check */
2148 for ( i = 0; i < face->blend->num_axis; i++ )
2149 if ( !face->blend->design_map[i].num_points )
2151 T1_Done_Blend( face );
2158 if ( face->len_buildchar > 0 )
2160 FT_Memory memory = face->root.memory;
2163 if ( FT_NEW_ARRAY( face->buildchar, face->len_buildchar ) )
2165 FT_ERROR(( "T1_Open_Face: cannot allocate BuildCharArray\n" ));
2166 face->len_buildchar = 0;
2172 face->len_buildchar = 0;
2174 #endif /* !T1_CONFIG_OPTION_NO_MM_SUPPORT */
2176 /* now, propagate the subrs, charstrings, and glyphnames tables */
2177 /* to the Type1 data */
2178 type1->num_glyphs = loader.num_glyphs;
2180 if ( loader.subrs.init )
2182 loader.subrs.init = 0;
2183 type1->num_subrs = loader.num_subrs;
2184 type1->subrs_block = loader.subrs.block;
2185 type1->subrs = loader.subrs.elements;
2186 type1->subrs_len = loader.subrs.lengths;
2189 if ( !IS_INCREMENTAL )
2190 if ( !loader.charstrings.init )
2192 FT_ERROR(( "T1_Open_Face: no `/CharStrings' array in face\n" ));
2193 error = T1_Err_Invalid_File_Format;
2196 loader.charstrings.init = 0;
2197 type1->charstrings_block = loader.charstrings.block;
2198 type1->charstrings = loader.charstrings.elements;
2199 type1->charstrings_len = loader.charstrings.lengths;
2201 /* we copy the glyph names `block' and `elements' fields; */
2202 /* the `lengths' field must be released later */
2203 type1->glyph_names_block = loader.glyph_names.block;
2204 type1->glyph_names = (FT_String**)loader.glyph_names.elements;
2205 loader.glyph_names.block = 0;
2206 loader.glyph_names.elements = 0;
2208 /* we must now build type1.encoding when we have a custom array */
2209 if ( type1->encoding_type == T1_ENCODING_TYPE_ARRAY )
2211 FT_Int charcode, idx, min_char, max_char;
2213 FT_Byte* glyph_name;
2216 /* OK, we do the following: for each element in the encoding */
2217 /* table, look up the index of the glyph having the same name */
2218 /* the index is then stored in type1.encoding.char_index, and */
2219 /* the name to type1.encoding.char_name */
2225 for ( ; charcode < loader.encoding_table.max_elems; charcode++ )
2227 type1->encoding.char_index[charcode] = 0;
2228 type1->encoding.char_name [charcode] = (char *)".notdef";
2230 char_name = loader.encoding_table.elements[charcode];
2232 for ( idx = 0; idx < type1->num_glyphs; idx++ )
2234 glyph_name = (FT_Byte*)type1->glyph_names[idx];
2235 if ( ft_strcmp( (const char*)char_name,
2236 (const char*)glyph_name ) == 0 )
2238 type1->encoding.char_index[charcode] = (FT_UShort)idx;
2239 type1->encoding.char_name [charcode] = (char*)glyph_name;
2241 /* Change min/max encoded char only if glyph name is */
2243 if ( ft_strcmp( (const char*)".notdef",
2244 (const char*)glyph_name ) != 0 )
2246 if ( charcode < min_char )
2247 min_char = charcode;
2248 if ( charcode >= max_char )
2249 max_char = charcode + 1;
2256 type1->encoding.code_first = min_char;
2257 type1->encoding.code_last = max_char;
2258 type1->encoding.num_chars = loader.num_chars;
2262 t1_done_loader( &loader );