Edit
kc3-lang/freetype/src/type1/t1load.c
Johnson Y. Yan
- src/type1/t1load.c
-
/***************************************************************************/ /* */ /* t1load.c */ /* */ /* Type 1 font loader (body). */ /* */ /* Copyright 1996-2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, */ /* 2010 by */ /* David Turner, Robert Wilhelm, and Werner Lemberg. */ /* */ /* This file is part of the FreeType project, and may only be used, */ /* modified, and distributed under the terms of the FreeType project */ /* license, LICENSE.TXT. By continuing to use, modify, or distribute */ /* this file you indicate that you have read the license and */ /* understand and accept it fully. */ /* */ /***************************************************************************/ /*************************************************************************/ /* */ /* This is the new and improved Type 1 data loader for FreeType 2. The */ /* old loader has several problems: it is slow, complex, difficult to */ /* maintain, and contains incredible hacks to make it accept some */ /* ill-formed Type 1 fonts without hiccup-ing. Moreover, about 5% of */ /* the Type 1 fonts on my machine still aren't loaded correctly by it. */ /* */ /* This version is much simpler, much faster and also easier to read and */ /* maintain by a great order of magnitude. The idea behind it is to */ /* _not_ try to read the Type 1 token stream with a state machine (i.e. */ /* a Postscript-like interpreter) but rather to perform simple pattern */ /* matching. */ /* */ /* Indeed, nearly all data definitions follow a simple pattern like */ /* */ /* ... /Field <data> ... */ /* */ /* where <data> can be a number, a boolean, a string, or an array of */ /* numbers. There are a few exceptions, namely the encoding, font name, */ /* charstrings, and subrs; they are handled with a special pattern */ /* matching routine. */ /* */ /* All other common cases are handled very simply. The matching rules */ /* are defined in the file `t1tokens.h' through the use of several */ /* macros calls PARSE_XXX. This file is included twice here; the first */ /* time to generate parsing callback functions, the second time to */ /* generate a table of keywords (with pointers to the associated */ /* callback functions). */ /* */ /* The function `parse_dict' simply scans *linearly* a given dictionary */ /* (either the top-level or private one) and calls the appropriate */ /* callback when it encounters an immediate keyword. */ /* */ /* This is by far the fastest way one can find to parse and read all */ /* data. */ /* */ /* This led to tremendous code size reduction. Note that later, the */ /* glyph loader will also be _greatly_ simplified, and the automatic */ /* hinter will replace the clumsy `t1hinter'. */ /* */ /*************************************************************************/ #include <ft2build.h> #include FT_INTERNAL_DEBUG_H #include FT_CONFIG_CONFIG_H #include FT_MULTIPLE_MASTERS_H #include FT_INTERNAL_TYPE1_TYPES_H #include FT_INTERNAL_CALC_H #include "t1load.h" #include "t1errors.h" /*************************************************************************/ /* */ /* The macro FT_COMPONENT is used in trace mode. It is an implicit */ /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */ /* messages during execution. */ /* */ #undef FT_COMPONENT #define FT_COMPONENT trace_t1load #ifndef T1_CONFIG_OPTION_NO_MM_SUPPORT /*************************************************************************/ /*************************************************************************/ /***** *****/ /***** MULTIPLE MASTERS SUPPORT *****/ /***** *****/ /*************************************************************************/ /*************************************************************************/ static FT_Error t1_allocate_blend( T1_Face face, FT_UInt num_designs, FT_UInt num_axis ) { PS_Blend blend; FT_Memory memory = face->root.memory; FT_Error error = T1_Err_Ok; blend = face->blend; if ( !blend ) { if ( FT_NEW( blend ) ) goto Exit; blend->num_default_design_vector = 0; face->blend = blend; } /* allocate design data if needed */ if ( num_designs > 0 ) { if ( blend->num_designs == 0 ) { FT_UInt nn; /* allocate the blend `private' and `font_info' dictionaries */ if ( FT_NEW_ARRAY( blend->font_infos[1], num_designs ) || FT_NEW_ARRAY( blend->privates[1], num_designs ) || FT_NEW_ARRAY( blend->bboxes[1], num_designs ) || FT_NEW_ARRAY( blend->weight_vector, num_designs * 2 ) ) goto Exit; blend->default_weight_vector = blend->weight_vector + num_designs; blend->font_infos[0] = &face->type1.font_info; blend->privates [0] = &face->type1.private_dict; blend->bboxes [0] = &face->type1.font_bbox; for ( nn = 2; nn <= num_designs; nn++ ) { blend->privates[nn] = blend->privates [nn - 1] + 1; blend->font_infos[nn] = blend->font_infos[nn - 1] + 1; blend->bboxes[nn] = blend->bboxes [nn - 1] + 1; } blend->num_designs = num_designs; } else if ( blend->num_designs != num_designs ) goto Fail; } /* allocate axis data if needed */ if ( num_axis > 0 ) { if ( blend->num_axis != 0 && blend->num_axis != num_axis ) goto Fail; blend->num_axis = num_axis; } /* allocate the blend design pos table if needed */ num_designs = blend->num_designs; num_axis = blend->num_axis; if ( num_designs && num_axis && blend->design_pos[0] == 0 ) { FT_UInt n; if ( FT_NEW_ARRAY( blend->design_pos[0], num_designs * num_axis ) ) goto Exit; for ( n = 1; n < num_designs; n++ ) blend->design_pos[n] = blend->design_pos[0] + num_axis * n; } Exit: return error; Fail: error = T1_Err_Invalid_File_Format; goto Exit; } FT_LOCAL_DEF( FT_Error ) T1_Get_Multi_Master( T1_Face face, FT_Multi_Master* master ) { PS_Blend blend = face->blend; FT_UInt n; FT_Error error; error = T1_Err_Invalid_Argument; if ( blend ) { master->num_axis = blend->num_axis; master->num_designs = blend->num_designs; for ( n = 0; n < blend->num_axis; n++ ) { FT_MM_Axis* axis = master->axis + n; PS_DesignMap map = blend->design_map + n; axis->name = blend->axis_names[n]; axis->minimum = map->design_points[0]; axis->maximum = map->design_points[map->num_points - 1]; } error = T1_Err_Ok; } return error; } /*************************************************************************/ /* */ /* Given a normalized (blend) coordinate, figure out the design */ /* coordinate appropriate for that value. */ /* */ FT_LOCAL_DEF( FT_Fixed ) mm_axis_unmap( PS_DesignMap axismap, FT_Fixed ncv ) { int j; if ( ncv <= axismap->blend_points[0] ) return INT_TO_FIXED( axismap->design_points[0] ); for ( j = 1; j < axismap->num_points; ++j ) { if ( ncv <= axismap->blend_points[j] ) { FT_Fixed t = FT_MulDiv( ncv - axismap->blend_points[j - 1], 0x10000L, axismap->blend_points[j] - axismap->blend_points[j - 1] ); return INT_TO_FIXED( axismap->design_points[j - 1] ) + FT_MulDiv( t, axismap->design_points[j] - axismap->design_points[j - 1], 1L ); } } return INT_TO_FIXED( axismap->design_points[axismap->num_points - 1] ); } /*************************************************************************/ /* */ /* Given a vector of weights, one for each design, figure out the */ /* normalized axis coordinates which gave rise to those weights. */ /* */ FT_LOCAL_DEF( void ) mm_weights_unmap( FT_Fixed* weights, FT_Fixed* axiscoords, FT_UInt axis_count ) { FT_ASSERT( axis_count <= T1_MAX_MM_AXIS ); if ( axis_count == 1 ) axiscoords[0] = weights[1]; else if ( axis_count == 2 ) { axiscoords[0] = weights[3] + weights[1]; axiscoords[1] = weights[3] + weights[2]; } else if ( axis_count == 3 ) { axiscoords[0] = weights[7] + weights[5] + weights[3] + weights[1]; axiscoords[1] = weights[7] + weights[6] + weights[3] + weights[2]; axiscoords[2] = weights[7] + weights[6] + weights[5] + weights[4]; } else { axiscoords[0] = weights[15] + weights[13] + weights[11] + weights[9] + weights[7] + weights[5] + weights[3] + weights[1]; axiscoords[1] = weights[15] + weights[14] + weights[11] + weights[10] + weights[7] + weights[6] + weights[3] + weights[2]; axiscoords[2] = weights[15] + weights[14] + weights[13] + weights[12] + weights[7] + weights[6] + weights[5] + weights[4]; axiscoords[3] = weights[15] + weights[14] + weights[13] + weights[12] + weights[11] + weights[10] + weights[9] + weights[8]; } } /*************************************************************************/ /* */ /* Just a wrapper around T1_Get_Multi_Master to support the different */ /* arguments needed by the GX var distortable fonts. */ /* */ FT_LOCAL_DEF( FT_Error ) T1_Get_MM_Var( T1_Face face, FT_MM_Var* *master ) { FT_Memory memory = face->root.memory; FT_MM_Var *mmvar; FT_Multi_Master mmaster; FT_Error error; FT_UInt i; FT_Fixed axiscoords[T1_MAX_MM_AXIS]; PS_Blend blend = face->blend; error = T1_Get_Multi_Master( face, &mmaster ); if ( error ) goto Exit; if ( FT_ALLOC( mmvar, sizeof ( FT_MM_Var ) + mmaster.num_axis * sizeof ( FT_Var_Axis ) ) ) goto Exit; mmvar->num_axis = mmaster.num_axis; mmvar->num_designs = mmaster.num_designs; mmvar->num_namedstyles = (FT_UInt)-1; /* Does not apply */ mmvar->axis = (FT_Var_Axis*)&mmvar[1]; /* Point to axes after MM_Var struct */ mmvar->namedstyle = NULL; for ( i = 0 ; i < mmaster.num_axis; ++i ) { mmvar->axis[i].name = mmaster.axis[i].name; mmvar->axis[i].minimum = INT_TO_FIXED( mmaster.axis[i].minimum); mmvar->axis[i].maximum = INT_TO_FIXED( mmaster.axis[i].maximum); mmvar->axis[i].def = ( mmvar->axis[i].minimum + mmvar->axis[i].maximum ) / 2; /* Does not apply. But this value is in range */ mmvar->axis[i].strid = (FT_UInt)-1; /* Does not apply */ mmvar->axis[i].tag = (FT_ULong)-1; /* Does not apply */ if ( ft_strcmp( mmvar->axis[i].name, "Weight" ) == 0 ) mmvar->axis[i].tag = FT_MAKE_TAG( 'w', 'g', 'h', 't' ); else if ( ft_strcmp( mmvar->axis[i].name, "Width" ) == 0 ) mmvar->axis[i].tag = FT_MAKE_TAG( 'w', 'd', 't', 'h' ); else if ( ft_strcmp( mmvar->axis[i].name, "OpticalSize" ) == 0 ) mmvar->axis[i].tag = FT_MAKE_TAG( 'o', 'p', 's', 'z' ); } if ( blend->num_designs == ( 1U << blend->num_axis ) ) { mm_weights_unmap( blend->default_weight_vector, axiscoords, blend->num_axis ); for ( i = 0; i < mmaster.num_axis; ++i ) mmvar->axis[i].def = mm_axis_unmap( &blend->design_map[i], axiscoords[i] ); } *master = mmvar; Exit: return error; } FT_LOCAL_DEF( FT_Error ) T1_Set_MM_Blend( T1_Face face, FT_UInt num_coords, FT_Fixed* coords ) { PS_Blend blend = face->blend; FT_Error error; FT_UInt n, m; error = T1_Err_Invalid_Argument; if ( blend && blend->num_axis == num_coords ) { /* recompute the weight vector from the blend coordinates */ error = T1_Err_Ok; for ( n = 0; n < blend->num_designs; n++ ) { FT_Fixed result = 0x10000L; /* 1.0 fixed */ for ( m = 0; m < blend->num_axis; m++ ) { FT_Fixed factor; /* get current blend axis position */ factor = coords[m]; if ( factor < 0 ) factor = 0; if ( factor > 0x10000L ) factor = 0x10000L; if ( ( n & ( 1 << m ) ) == 0 ) factor = 0x10000L - factor; result = FT_MulFix( result, factor ); } blend->weight_vector[n] = result; } error = T1_Err_Ok; } return error; } FT_LOCAL_DEF( FT_Error ) T1_Set_MM_Design( T1_Face face, FT_UInt num_coords, FT_Long* coords ) { PS_Blend blend = face->blend; FT_Error error; FT_UInt n, p; error = T1_Err_Invalid_Argument; if ( blend && blend->num_axis == num_coords ) { /* compute the blend coordinates through the blend design map */ FT_Fixed final_blends[T1_MAX_MM_DESIGNS]; for ( n = 0; n < blend->num_axis; n++ ) { FT_Long design = coords[n]; FT_Fixed the_blend; PS_DesignMap map = blend->design_map + n; FT_Long* designs = map->design_points; FT_Fixed* blends = map->blend_points; FT_Int before = -1, after = -1; for ( p = 0; p < (FT_UInt)map->num_points; p++ ) { FT_Long p_design = designs[p]; /* exact match? */ if ( design == p_design ) { the_blend = blends[p]; goto Found; } if ( design < p_design ) { after = p; break; } before = p; } /* now interpolate if necessary */ if ( before < 0 ) the_blend = blends[0]; else if ( after < 0 ) the_blend = blends[map->num_points - 1]; else the_blend = FT_MulDiv( design - designs[before], blends [after] - blends [before], designs[after] - designs[before] ); Found: final_blends[n] = the_blend; } error = T1_Set_MM_Blend( face, num_coords, final_blends ); } return error; } /*************************************************************************/ /* */ /* Just a wrapper around T1_Set_MM_Design to support the different */ /* arguments needed by the GX var distortable fonts. */ /* */ FT_LOCAL_DEF( FT_Error ) T1_Set_Var_Design( T1_Face face, FT_UInt num_coords, FT_Fixed* coords ) { FT_Long lcoords[4]; /* maximum axis count is 4 */ FT_UInt i; FT_Error error; error = T1_Err_Invalid_Argument; if ( num_coords <= 4 && num_coords > 0 ) { for ( i = 0; i < num_coords; ++i ) lcoords[i] = FIXED_TO_INT( coords[i] ); error = T1_Set_MM_Design( face, num_coords, lcoords ); } return error; } FT_LOCAL_DEF( void ) T1_Done_Blend( T1_Face face ) { FT_Memory memory = face->root.memory; PS_Blend blend = face->blend; if ( blend ) { FT_UInt num_designs = blend->num_designs; FT_UInt num_axis = blend->num_axis; FT_UInt n; /* release design pos table */ FT_FREE( blend->design_pos[0] ); for ( n = 1; n < num_designs; n++ ) blend->design_pos[n] = 0; /* release blend `private' and `font info' dictionaries */ FT_FREE( blend->privates[1] ); FT_FREE( blend->font_infos[1] ); FT_FREE( blend->bboxes[1] ); for ( n = 0; n < num_designs; n++ ) { blend->privates [n] = 0; blend->font_infos[n] = 0; blend->bboxes [n] = 0; } /* release weight vectors */ FT_FREE( blend->weight_vector ); blend->default_weight_vector = 0; /* release axis names */ for ( n = 0; n < num_axis; n++ ) FT_FREE( blend->axis_names[n] ); /* release design map */ for ( n = 0; n < num_axis; n++ ) { PS_DesignMap dmap = blend->design_map + n; FT_FREE( dmap->design_points ); dmap->num_points = 0; } FT_FREE( face->blend ); } } static void parse_blend_axis_types( T1_Face face, T1_Loader loader ) { T1_TokenRec axis_tokens[T1_MAX_MM_AXIS]; FT_Int n, num_axis; FT_Error error = T1_Err_Ok; PS_Blend blend; FT_Memory memory; /* take an array of objects */ T1_ToTokenArray( &loader->parser, axis_tokens, T1_MAX_MM_AXIS, &num_axis ); if ( num_axis < 0 ) { error = T1_Err_Ignore; goto Exit; } if ( num_axis == 0 || num_axis > T1_MAX_MM_AXIS ) { FT_ERROR(( "parse_blend_axis_types: incorrect number of axes: %d\n", num_axis )); error = T1_Err_Invalid_File_Format; goto Exit; } /* allocate blend if necessary */ error = t1_allocate_blend( face, 0, (FT_UInt)num_axis ); if ( error ) goto Exit; blend = face->blend; memory = face->root.memory; /* each token is an immediate containing the name of the axis */ for ( n = 0; n < num_axis; n++ ) { T1_Token token = axis_tokens + n; FT_Byte* name; FT_PtrDist len; /* skip first slash, if any */ if ( token->start[0] == '/' ) token->start++; len = token->limit - token->start; if ( len == 0 ) { error = T1_Err_Invalid_File_Format; goto Exit; } if ( FT_ALLOC( blend->axis_names[n], len + 1 ) ) goto Exit; name = (FT_Byte*)blend->axis_names[n]; FT_MEM_COPY( name, token->start, len ); name[len] = 0; } Exit: loader->parser.root.error = error; } static void parse_blend_design_positions( T1_Face face, T1_Loader loader ) { T1_TokenRec design_tokens[T1_MAX_MM_DESIGNS]; FT_Int num_designs; FT_Int num_axis; T1_Parser parser = &loader->parser; FT_Error error = T1_Err_Ok; PS_Blend blend; /* get the array of design tokens -- compute number of designs */ T1_ToTokenArray( parser, design_tokens, T1_MAX_MM_DESIGNS, &num_designs ); if ( num_designs < 0 ) { error = T1_Err_Ignore; goto Exit; } if ( num_designs == 0 || num_designs > T1_MAX_MM_DESIGNS ) { FT_ERROR(( "parse_blend_design_positions:" " incorrect number of designs: %d\n", num_designs )); error = T1_Err_Invalid_File_Format; goto Exit; } { FT_Byte* old_cursor = parser->root.cursor; FT_Byte* old_limit = parser->root.limit; FT_Int n; blend = face->blend; num_axis = 0; /* make compiler happy */ for ( n = 0; n < num_designs; n++ ) { T1_TokenRec axis_tokens[T1_MAX_MM_AXIS]; T1_Token token; FT_Int axis, n_axis; /* read axis/coordinates tokens */ token = design_tokens + n; parser->root.cursor = token->start; parser->root.limit = token->limit; T1_ToTokenArray( parser, axis_tokens, T1_MAX_MM_AXIS, &n_axis ); if ( n == 0 ) { if ( n_axis <= 0 || n_axis > T1_MAX_MM_AXIS ) { FT_ERROR(( "parse_blend_design_positions:" " invalid number of axes: %d\n", n_axis )); error = T1_Err_Invalid_File_Format; goto Exit; } num_axis = n_axis; error = t1_allocate_blend( face, num_designs, num_axis ); if ( error ) goto Exit; blend = face->blend; } else if ( n_axis != num_axis ) { FT_ERROR(( "parse_blend_design_positions: incorrect table\n" )); error = T1_Err_Invalid_File_Format; goto Exit; } /* now read each axis token into the design position */ for ( axis = 0; axis < n_axis; axis++ ) { T1_Token token2 = axis_tokens + axis; parser->root.cursor = token2->start; parser->root.limit = token2->limit; blend->design_pos[n][axis] = T1_ToFixed( parser, 0 ); } } loader->parser.root.cursor = old_cursor; loader->parser.root.limit = old_limit; } Exit: loader->parser.root.error = error; } static void parse_blend_design_map( T1_Face face, T1_Loader loader ) { FT_Error error = T1_Err_Ok; T1_Parser parser = &loader->parser; PS_Blend blend; T1_TokenRec axis_tokens[T1_MAX_MM_AXIS]; FT_Int n, num_axis; FT_Byte* old_cursor; FT_Byte* old_limit; FT_Memory memory = face->root.memory; T1_ToTokenArray( parser, axis_tokens, T1_MAX_MM_AXIS, &num_axis ); if ( num_axis < 0 ) { error = T1_Err_Ignore; goto Exit; } if ( num_axis == 0 || num_axis > T1_MAX_MM_AXIS ) { FT_ERROR(( "parse_blend_design_map: incorrect number of axes: %d\n", num_axis )); error = T1_Err_Invalid_File_Format; goto Exit; } old_cursor = parser->root.cursor; old_limit = parser->root.limit; error = t1_allocate_blend( face, 0, num_axis ); if ( error ) goto Exit; blend = face->blend; /* now read each axis design map */ for ( n = 0; n < num_axis; n++ ) { PS_DesignMap map = blend->design_map + n; T1_Token axis_token; T1_TokenRec point_tokens[T1_MAX_MM_MAP_POINTS]; FT_Int p, num_points; axis_token = axis_tokens + n; parser->root.cursor = axis_token->start; parser->root.limit = axis_token->limit; T1_ToTokenArray( parser, point_tokens, T1_MAX_MM_MAP_POINTS, &num_points ); if ( num_points <= 0 || num_points > T1_MAX_MM_MAP_POINTS ) { FT_ERROR(( "parse_blend_design_map: incorrect table\n" )); error = T1_Err_Invalid_File_Format; goto Exit; } /* allocate design map data */ if ( FT_NEW_ARRAY( map->design_points, num_points * 2 ) ) goto Exit; map->blend_points = map->design_points + num_points; map->num_points = (FT_Byte)num_points; for ( p = 0; p < num_points; p++ ) { T1_Token point_token; point_token = point_tokens + p; /* don't include delimiting brackets */ parser->root.cursor = point_token->start + 1; parser->root.limit = point_token->limit - 1; map->design_points[p] = T1_ToInt( parser ); map->blend_points [p] = T1_ToFixed( parser, 0 ); } } parser->root.cursor = old_cursor; parser->root.limit = old_limit; Exit: parser->root.error = error; } static void parse_weight_vector( T1_Face face, T1_Loader loader ) { T1_TokenRec design_tokens[T1_MAX_MM_DESIGNS]; FT_Int num_designs; FT_Error error = T1_Err_Ok; T1_Parser parser = &loader->parser; PS_Blend blend = face->blend; T1_Token token; FT_Int n; FT_Byte* old_cursor; FT_Byte* old_limit; T1_ToTokenArray( parser, design_tokens, T1_MAX_MM_DESIGNS, &num_designs ); if ( num_designs < 0 ) { error = T1_Err_Ignore; goto Exit; } if ( num_designs == 0 || num_designs > T1_MAX_MM_DESIGNS ) { FT_ERROR(( "parse_weight_vector:" " incorrect number of designs: %d\n", num_designs )); error = T1_Err_Invalid_File_Format; goto Exit; } if ( !blend || !blend->num_designs ) { error = t1_allocate_blend( face, num_designs, 0 ); if ( error ) goto Exit; blend = face->blend; } else if ( blend->num_designs != (FT_UInt)num_designs ) { FT_ERROR(( "parse_weight_vector:" " /BlendDesignPosition and /WeightVector have\n" " " " different number of elements\n" )); error = T1_Err_Invalid_File_Format; goto Exit; } old_cursor = parser->root.cursor; old_limit = parser->root.limit; for ( n = 0; n < num_designs; n++ ) { token = design_tokens + n; parser->root.cursor = token->start; parser->root.limit = token->limit; blend->default_weight_vector[n] = blend->weight_vector[n] = T1_ToFixed( parser, 0 ); } parser->root.cursor = old_cursor; parser->root.limit = old_limit; Exit: parser->root.error = error; } /* e.g., /BuildCharArray [0 0 0 0 0 0 0 0] def */ /* we're only interested in the number of array elements */ static void parse_buildchar( T1_Face face, T1_Loader loader ) { face->len_buildchar = T1_ToFixedArray( &loader->parser, 0, NULL, 0 ); return; } #endif /* T1_CONFIG_OPTION_NO_MM_SUPPORT */ /*************************************************************************/ /*************************************************************************/ /***** *****/ /***** TYPE 1 SYMBOL PARSING *****/ /***** *****/ /*************************************************************************/ /*************************************************************************/ static FT_Error t1_load_keyword( T1_Face face, T1_Loader loader, const T1_Field field ) { FT_Error error; void* dummy_object; void** objects; FT_UInt max_objects; PS_Blend blend = face->blend; /* if the keyword has a dedicated callback, call it */ if ( field->type == T1_FIELD_TYPE_CALLBACK ) { field->reader( (FT_Face)face, loader ); error = loader->parser.root.error; goto Exit; } /* now, the keyword is either a simple field, or a table of fields; */ /* we are now going to take care of it */ switch ( field->location ) { case T1_FIELD_LOCATION_FONT_INFO: dummy_object = &face->type1.font_info; objects = &dummy_object; max_objects = 0; if ( blend ) { objects = (void**)blend->font_infos; max_objects = blend->num_designs; } break; case T1_FIELD_LOCATION_FONT_EXTRA: dummy_object = &face->type1.font_extra; objects = &dummy_object; max_objects = 0; break; case T1_FIELD_LOCATION_PRIVATE: dummy_object = &face->type1.private_dict; objects = &dummy_object; max_objects = 0; if ( blend ) { objects = (void**)blend->privates; max_objects = blend->num_designs; } break; case T1_FIELD_LOCATION_BBOX: dummy_object = &face->type1.font_bbox; objects = &dummy_object; max_objects = 0; if ( blend ) { objects = (void**)blend->bboxes; max_objects = blend->num_designs; } break; case T1_FIELD_LOCATION_LOADER: dummy_object = loader; objects = &dummy_object; max_objects = 0; break; case T1_FIELD_LOCATION_FACE: dummy_object = face; objects = &dummy_object; max_objects = 0; break; #ifndef T1_CONFIG_OPTION_NO_MM_SUPPORT case T1_FIELD_LOCATION_BLEND: dummy_object = face->blend; objects = &dummy_object; max_objects = 0; break; #endif default: dummy_object = &face->type1; objects = &dummy_object; max_objects = 0; } if ( field->type == T1_FIELD_TYPE_INTEGER_ARRAY || field->type == T1_FIELD_TYPE_FIXED_ARRAY ) error = T1_Load_Field_Table( &loader->parser, field, objects, max_objects, 0 ); else error = T1_Load_Field( &loader->parser, field, objects, max_objects, 0 ); Exit: return error; } static void parse_private( T1_Face face, T1_Loader loader ) { FT_UNUSED( face ); loader->keywords_encountered |= T1_PRIVATE; } static int read_binary_data( T1_Parser parser, FT_Long* size, FT_Byte** base ) { FT_Byte* cur; FT_Byte* limit = parser->root.limit; /* the binary data has one of the following formats */ /* */ /* `size' [white*] RD white ....... ND */ /* `size' [white*] -| white ....... |- */ /* */ T1_Skip_Spaces( parser ); cur = parser->root.cursor; if ( cur < limit && ft_isdigit( *cur ) ) { FT_Long s = T1_ToInt( parser ); T1_Skip_PS_Token( parser ); /* `RD' or `-|' or something else */ /* there is only one whitespace char after the */ /* `RD' or `-|' token */ *base = parser->root.cursor + 1; if ( s >= 0 && s < limit - *base ) { parser->root.cursor += s + 1; *size = s; return !parser->root.error; } } FT_ERROR(( "read_binary_data: invalid size field\n" )); parser->root.error = T1_Err_Invalid_File_Format; return 0; } /* We now define the routines to handle the `/Encoding', `/Subrs', */ /* and `/CharStrings' dictionaries. */ static void parse_font_matrix( T1_Face face, T1_Loader loader ) { T1_Parser parser = &loader->parser; FT_Matrix* matrix = &face->type1.font_matrix; FT_Vector* offset = &face->type1.font_offset; FT_Face root = (FT_Face)&face->root; FT_Fixed temp[6]; FT_Fixed temp_scale; FT_Int result; result = T1_ToFixedArray( parser, 6, temp, 3 ); if ( result < 0 ) { parser->root.error = T1_Err_Invalid_File_Format; return; } temp_scale = FT_ABS( temp[3] ); if ( temp_scale == 0 ) { FT_ERROR(( "parse_font_matrix: invalid font matrix\n" )); parser->root.error = T1_Err_Invalid_File_Format; return; } /* Set Units per EM based on FontMatrix values. We set the value to */ /* 1000 / temp_scale, because temp_scale was already multiplied by */ /* 1000 (in t1_tofixed, from psobjs.c). */ root->units_per_EM = (FT_UShort)( FT_DivFix( 1000 * 0x10000L, temp_scale ) >> 16 ); /* we need to scale the values by 1.0/temp_scale */ if ( temp_scale != 0x10000L ) { temp[0] = FT_DivFix( temp[0], temp_scale ); temp[1] = FT_DivFix( temp[1], temp_scale ); temp[2] = FT_DivFix( temp[2], temp_scale ); temp[4] = FT_DivFix( temp[4], temp_scale ); temp[5] = FT_DivFix( temp[5], temp_scale ); temp[3] = temp[3] < 0 ? -0x10000L : 0x10000L; } matrix->xx = temp[0]; matrix->yx = temp[1]; matrix->xy = temp[2]; matrix->yy = temp[3]; /* note that the offsets must be expressed in integer font units */ offset->x = temp[4] >> 16; offset->y = temp[5] >> 16; } static void parse_encoding( T1_Face face, T1_Loader loader ) { T1_Parser parser = &loader->parser; FT_Byte* cur; FT_Byte* limit = parser->root.limit; PSAux_Service psaux = (PSAux_Service)face->psaux; T1_Skip_Spaces( parser ); cur = parser->root.cursor; if ( cur >= limit ) { FT_ERROR(( "parse_encoding: out of bounds\n" )); parser->root.error = T1_Err_Invalid_File_Format; return; } /* if we have a number or `[', the encoding is an array, */ /* and we must load it now */ if ( ft_isdigit( *cur ) || *cur == '[' ) { T1_Encoding encode = &face->type1.encoding; FT_Int count, n; PS_Table char_table = &loader->encoding_table; FT_Memory memory = parser->root.memory; FT_Error error; FT_Bool only_immediates = 0; /* read the number of entries in the encoding; should be 256 */ if ( *cur == '[' ) { count = 256; only_immediates = 1; parser->root.cursor++; } else count = (FT_Int)T1_ToInt( parser ); T1_Skip_Spaces( parser ); if ( parser->root.cursor >= limit ) return; /* we use a T1_Table to store our charnames */ loader->num_chars = encode->num_chars = count; if ( FT_NEW_ARRAY( encode->char_index, count ) || FT_NEW_ARRAY( encode->char_name, count ) || FT_SET_ERROR( psaux->ps_table_funcs->init( char_table, count, memory ) ) ) { parser->root.error = error; return; } /* We need to `zero' out encoding_table.elements */ for ( n = 0; n < count; n++ ) { char* notdef = (char *)".notdef"; T1_Add_Table( char_table, n, notdef, 8 ); } /* Now we need to read records of the form */ /* */ /* ... charcode /charname ... */ /* */ /* for each entry in our table. */ /* */ /* We simply look for a number followed by an immediate */ /* name. Note that this ignores correctly the sequence */ /* that is often seen in type1 fonts: */ /* */ /* 0 1 255 { 1 index exch /.notdef put } for dup */ /* */ /* used to clean the encoding array before anything else. */ /* */ /* Alternatively, if the array is directly given as */ /* */ /* /Encoding [ ... ] */ /* */ /* we only read immediates. */ n = 0; T1_Skip_Spaces( parser ); while ( parser->root.cursor < limit ) { cur = parser->root.cursor; /* we stop when we encounter a `def' or `]' */ if ( *cur == 'd' && cur + 3 < limit ) { if ( cur[1] == 'e' && cur[2] == 'f' && IS_PS_DELIM( cur[3] ) ) { FT_TRACE6(( "encoding end\n" )); cur += 3; break; } } if ( *cur == ']' ) { FT_TRACE6(( "encoding end\n" )); cur++; break; } /* check whether we've found an entry */ if ( ft_isdigit( *cur ) || only_immediates ) { FT_Int charcode; if ( only_immediates ) charcode = n; else { charcode = (FT_Int)T1_ToInt( parser ); T1_Skip_Spaces( parser ); } cur = parser->root.cursor; if ( *cur == '/' && cur + 2 < limit && n < count ) { FT_PtrDist len; cur++; parser->root.cursor = cur; T1_Skip_PS_Token( parser ); if ( parser->root.error ) return; len = parser->root.cursor - cur; parser->root.error = T1_Add_Table( char_table, charcode, cur, len + 1 ); if ( parser->root.error ) return; char_table->elements[charcode][len] = '\0'; n++; } else if ( only_immediates ) { /* Since the current position is not updated for */ /* immediates-only mode we would get an infinite loop if */ /* we don't do anything here. */ /* */ /* This encoding array is not valid according to the type1 */ /* specification (it might be an encoding for a CID type1 */ /* font, however), so we conclude that this font is NOT a */ /* type1 font. */ parser->root.error = FT_Err_Unknown_File_Format; return; } } else { T1_Skip_PS_Token( parser ); if ( parser->root.error ) return; } T1_Skip_Spaces( parser ); } face->type1.encoding_type = T1_ENCODING_TYPE_ARRAY; parser->root.cursor = cur; } /* Otherwise, we should have either `StandardEncoding', */ /* `ExpertEncoding', or `ISOLatin1Encoding' */ else { if ( cur + 17 < limit && ft_strncmp( (const char*)cur, "StandardEncoding", 16 ) == 0 ) face->type1.encoding_type = T1_ENCODING_TYPE_STANDARD; else if ( cur + 15 < limit && ft_strncmp( (const char*)cur, "ExpertEncoding", 14 ) == 0 ) face->type1.encoding_type = T1_ENCODING_TYPE_EXPERT; else if ( cur + 18 < limit && ft_strncmp( (const char*)cur, "ISOLatin1Encoding", 17 ) == 0 ) face->type1.encoding_type = T1_ENCODING_TYPE_ISOLATIN1; else parser->root.error = T1_Err_Ignore; } } static void parse_subrs( T1_Face face, T1_Loader loader ) { T1_Parser parser = &loader->parser; PS_Table table = &loader->subrs; FT_Memory memory = parser->root.memory; FT_Error error; FT_Int num_subrs; PSAux_Service psaux = (PSAux_Service)face->psaux; T1_Skip_Spaces( parser ); /* test for empty array */ if ( parser->root.cursor < parser->root.limit && *parser->root.cursor == '[' ) { T1_Skip_PS_Token( parser ); T1_Skip_Spaces ( parser ); if ( parser->root.cursor >= parser->root.limit || *parser->root.cursor != ']' ) parser->root.error = T1_Err_Invalid_File_Format; return; } num_subrs = (FT_Int)T1_ToInt( parser ); /* position the parser right before the `dup' of the first subr */ T1_Skip_PS_Token( parser ); /* `array' */ if ( parser->root.error ) return; T1_Skip_Spaces( parser ); /* initialize subrs array -- with synthetic fonts it is possible */ /* we get here twice */ if ( !loader->num_subrs ) { error = psaux->ps_table_funcs->init( table, num_subrs, memory ); if ( error ) goto Fail; } /* the format is simple: */ /* */ /* `index' + binary data */ /* */ for (;;) { FT_Long idx, size; FT_Byte* base; /* If the next token isn't `dup' we are done. */ if ( ft_strncmp( (char*)parser->root.cursor, "dup", 3 ) != 0 ) break; T1_Skip_PS_Token( parser ); /* `dup' */ idx = T1_ToInt( parser ); if ( !read_binary_data( parser, &size, &base ) ) return; /* The binary string is followed by one token, e.g. `NP' */ /* (bound to `noaccess put') or by two separate tokens: */ /* `noaccess' & `put'. We position the parser right */ /* before the next `dup', if any. */ T1_Skip_PS_Token( parser ); /* `NP' or `|' or `noaccess' */ if ( parser->root.error ) return; T1_Skip_Spaces ( parser ); if ( ft_strncmp( (char*)parser->root.cursor, "put", 3 ) == 0 ) { T1_Skip_PS_Token( parser ); /* skip `put' */ T1_Skip_Spaces ( parser ); } /* with synthetic fonts it is possible we get here twice */ if ( loader->num_subrs ) continue; /* some fonts use a value of -1 for lenIV to indicate that */ /* the charstrings are unencoded */ /* */ /* thanks to Tom Kacvinsky for pointing this out */ /* */ if ( face->type1.private_dict.lenIV >= 0 ) { FT_Byte* temp; /* some fonts define empty subr records -- this is not totally */ /* compliant to the specification (which says they should at */ /* least contain a `return'), but we support them anyway */ if ( size < face->type1.private_dict.lenIV ) { error = T1_Err_Invalid_File_Format; goto Fail; } /* t1_decrypt() shouldn't write to base -- make temporary copy */ if ( FT_ALLOC( temp, size ) ) goto Fail; FT_MEM_COPY( temp, base, size ); psaux->t1_decrypt( temp, size, 4330 ); size -= face->type1.private_dict.lenIV; error = T1_Add_Table( table, (FT_Int)idx, temp + face->type1.private_dict.lenIV, size ); FT_FREE( temp ); } else error = T1_Add_Table( table, (FT_Int)idx, base, size ); if ( error ) goto Fail; } if ( !loader->num_subrs ) loader->num_subrs = num_subrs; return; Fail: parser->root.error = error; } #define TABLE_EXTEND 5 static void parse_charstrings( T1_Face face, T1_Loader loader ) { T1_Parser parser = &loader->parser; PS_Table code_table = &loader->charstrings; PS_Table name_table = &loader->glyph_names; PS_Table swap_table = &loader->swap_table; FT_Memory memory = parser->root.memory; FT_Error error; PSAux_Service psaux = (PSAux_Service)face->psaux; FT_Byte* cur; FT_Byte* limit = parser->root.limit; FT_Int n, num_glyphs; FT_UInt notdef_index = 0; FT_Byte notdef_found = 0; num_glyphs = (FT_Int)T1_ToInt( parser ); /* some fonts like Optima-Oblique not only define the /CharStrings */ /* array but access it also */ if ( num_glyphs == 0 || parser->root.error ) return; /* initialize tables, leaving space for addition of .notdef, */ /* if necessary, and a few other glyphs to handle buggy */ /* fonts which have more glyphs than specified. */ /* for some non-standard fonts like `Optima' which provides */ /* different outlines depending on the resolution it is */ /* possible to get here twice */ if ( !loader->num_glyphs ) { error = psaux->ps_table_funcs->init( code_table, num_glyphs + 1 + TABLE_EXTEND, memory ); if ( error ) goto Fail; error = psaux->ps_table_funcs->init( name_table, num_glyphs + 1 + TABLE_EXTEND, memory ); if ( error ) goto Fail; /* Initialize table for swapping index notdef_index and */ /* index 0 names and codes (if necessary). */ error = psaux->ps_table_funcs->init( swap_table, 4, memory ); if ( error ) goto Fail; } n = 0; for (;;) { FT_Long size; FT_Byte* base; /* the format is simple: */ /* `/glyphname' + binary data */ T1_Skip_Spaces( parser ); cur = parser->root.cursor; if ( cur >= limit ) break; /* we stop when we find a `def' or `end' keyword */ if ( cur + 3 < limit && IS_PS_DELIM( cur[3] ) ) { if ( cur[0] == 'd' && cur[1] == 'e' && cur[2] == 'f' ) { /* There are fonts which have this: */ /* */ /* /CharStrings 118 dict def */ /* Private begin */ /* CharStrings begin */ /* ... */ /* */ /* To catch this we ignore `def' if */ /* no charstring has actually been */ /* seen. */ if ( n ) break; } if ( cur[0] == 'e' && cur[1] == 'n' && cur[2] == 'd' ) break; } T1_Skip_PS_Token( parser ); if ( parser->root.error ) return; if ( *cur == '/' ) { FT_PtrDist len; if ( cur + 1 >= limit ) { error = T1_Err_Invalid_File_Format; goto Fail; } cur++; /* skip `/' */ len = parser->root.cursor - cur; if ( !read_binary_data( parser, &size, &base ) ) return; /* for some non-standard fonts like `Optima' which provides */ /* different outlines depending on the resolution it is */ /* possible to get here twice */ if ( loader->num_glyphs ) continue; error = T1_Add_Table( name_table, n, cur, len + 1 ); if ( error ) goto Fail; /* add a trailing zero to the name table */ name_table->elements[n][len] = '\0'; /* record index of /.notdef */ if ( *cur == '.' && ft_strcmp( ".notdef", (const char*)(name_table->elements[n]) ) == 0 ) { notdef_index = n; notdef_found = 1; } if ( face->type1.private_dict.lenIV >= 0 && n < num_glyphs + TABLE_EXTEND ) { FT_Byte* temp; if ( size <= face->type1.private_dict.lenIV ) { error = T1_Err_Invalid_File_Format; goto Fail; } /* t1_decrypt() shouldn't write to base -- make temporary copy */ if ( FT_ALLOC( temp, size ) ) goto Fail; FT_MEM_COPY( temp, base, size ); psaux->t1_decrypt( temp, size, 4330 ); size -= face->type1.private_dict.lenIV; error = T1_Add_Table( code_table, n, temp + face->type1.private_dict.lenIV, size ); FT_FREE( temp ); } else error = T1_Add_Table( code_table, n, base, size ); if ( error ) goto Fail; n++; } } loader->num_glyphs = n; /* if /.notdef is found but does not occupy index 0, do our magic. */ if ( notdef_found && ft_strcmp( ".notdef", (const char*)name_table->elements[0] ) ) { /* Swap glyph in index 0 with /.notdef glyph. First, add index 0 */ /* name and code entries to swap_table. Then place notdef_index */ /* name and code entries into swap_table. Then swap name and code */ /* entries at indices notdef_index and 0 using values stored in */ /* swap_table. */ /* Index 0 name */ error = T1_Add_Table( swap_table, 0, name_table->elements[0], name_table->lengths [0] ); if ( error ) goto Fail; /* Index 0 code */ error = T1_Add_Table( swap_table, 1, code_table->elements[0], code_table->lengths [0] ); if ( error ) goto Fail; /* Index notdef_index name */ error = T1_Add_Table( swap_table, 2, name_table->elements[notdef_index], name_table->lengths [notdef_index] ); if ( error ) goto Fail; /* Index notdef_index code */ error = T1_Add_Table( swap_table, 3, code_table->elements[notdef_index], code_table->lengths [notdef_index] ); if ( error ) goto Fail; error = T1_Add_Table( name_table, notdef_index, swap_table->elements[0], swap_table->lengths [0] ); if ( error ) goto Fail; error = T1_Add_Table( code_table, notdef_index, swap_table->elements[1], swap_table->lengths [1] ); if ( error ) goto Fail; error = T1_Add_Table( name_table, 0, swap_table->elements[2], swap_table->lengths [2] ); if ( error ) goto Fail; error = T1_Add_Table( code_table, 0, swap_table->elements[3], swap_table->lengths [3] ); if ( error ) goto Fail; } else if ( !notdef_found ) { /* notdef_index is already 0, or /.notdef is undefined in */ /* charstrings dictionary. Worry about /.notdef undefined. */ /* We take index 0 and add it to the end of the table(s) */ /* and add our own /.notdef glyph to index 0. */ /* 0 333 hsbw endchar */ FT_Byte notdef_glyph[] = { 0x8B, 0xF7, 0xE1, 0x0D, 0x0E }; char* notdef_name = (char *)".notdef"; error = T1_Add_Table( swap_table, 0, name_table->elements[0], name_table->lengths [0] ); if ( error ) goto Fail; error = T1_Add_Table( swap_table, 1, code_table->elements[0], code_table->lengths [0] ); if ( error ) goto Fail; error = T1_Add_Table( name_table, 0, notdef_name, 8 ); if ( error ) goto Fail; error = T1_Add_Table( code_table, 0, notdef_glyph, 5 ); if ( error ) goto Fail; error = T1_Add_Table( name_table, n, swap_table->elements[0], swap_table->lengths [0] ); if ( error ) goto Fail; error = T1_Add_Table( code_table, n, swap_table->elements[1], swap_table->lengths [1] ); if ( error ) goto Fail; /* we added a glyph. */ loader->num_glyphs += 1; } return; Fail: parser->root.error = error; } /*************************************************************************/ /* */ /* Define the token field static variables. This is a set of */ /* T1_FieldRec variables. */ /* */ /*************************************************************************/ static const T1_FieldRec t1_keywords[] = { #include "t1tokens.h" /* now add the special functions... */ T1_FIELD_CALLBACK( "FontMatrix", parse_font_matrix, T1_FIELD_DICT_FONTDICT ) T1_FIELD_CALLBACK( "Encoding", parse_encoding, T1_FIELD_DICT_FONTDICT ) T1_FIELD_CALLBACK( "Subrs", parse_subrs, T1_FIELD_DICT_PRIVATE ) T1_FIELD_CALLBACK( "CharStrings", parse_charstrings, T1_FIELD_DICT_PRIVATE ) T1_FIELD_CALLBACK( "Private", parse_private, T1_FIELD_DICT_FONTDICT ) #ifndef T1_CONFIG_OPTION_NO_MM_SUPPORT T1_FIELD_CALLBACK( "BlendDesignPositions", parse_blend_design_positions, T1_FIELD_DICT_FONTDICT ) T1_FIELD_CALLBACK( "BlendDesignMap", parse_blend_design_map, T1_FIELD_DICT_FONTDICT ) T1_FIELD_CALLBACK( "BlendAxisTypes", parse_blend_axis_types, T1_FIELD_DICT_FONTDICT ) T1_FIELD_CALLBACK( "WeightVector", parse_weight_vector, T1_FIELD_DICT_FONTDICT ) T1_FIELD_CALLBACK( "BuildCharArray", parse_buildchar, T1_FIELD_DICT_PRIVATE ) #endif { 0, T1_FIELD_LOCATION_CID_INFO, T1_FIELD_TYPE_NONE, 0, 0, 0, 0, 0, 0 } }; #define T1_FIELD_COUNT \ ( sizeof ( t1_keywords ) / sizeof ( t1_keywords[0] ) ) static FT_Error parse_dict( T1_Face face, T1_Loader loader, FT_Byte* base, FT_Long size ) { T1_Parser parser = &loader->parser; FT_Byte *limit, *start_binary = NULL; FT_Bool have_integer = 0; parser->root.cursor = base; parser->root.limit = base + size; parser->root.error = T1_Err_Ok; limit = parser->root.limit; T1_Skip_Spaces( parser ); while ( parser->root.cursor < limit ) { FT_Byte* cur; cur = parser->root.cursor; /* look for `eexec' */ if ( IS_PS_TOKEN( cur, limit, "eexec" ) ) break; /* look for `closefile' which ends the eexec section */ else if ( IS_PS_TOKEN( cur, limit, "closefile" ) ) break; /* in a synthetic font the base font starts after a */ /* `FontDictionary' token that is placed after a Private dict */ else if ( IS_PS_TOKEN( cur, limit, "FontDirectory" ) ) { if ( loader->keywords_encountered & T1_PRIVATE ) loader->keywords_encountered |= T1_FONTDIR_AFTER_PRIVATE; parser->root.cursor += 13; } /* check whether we have an integer */ else if ( ft_isdigit( *cur ) ) { start_binary = cur; T1_Skip_PS_Token( parser ); if ( parser->root.error ) goto Exit; have_integer = 1; } /* in valid Type 1 fonts we don't see `RD' or `-|' directly */ /* since those tokens are handled by parse_subrs and */ /* parse_charstrings */ else if ( *cur == 'R' && cur + 6 < limit && *(cur + 1) == 'D' && have_integer ) { FT_Long s; FT_Byte* b; parser->root.cursor = start_binary; if ( !read_binary_data( parser, &s, &b ) ) return T1_Err_Invalid_File_Format; have_integer = 0; } else if ( *cur == '-' && cur + 6 < limit && *(cur + 1) == '|' && have_integer ) { FT_Long s; FT_Byte* b; parser->root.cursor = start_binary; if ( !read_binary_data( parser, &s, &b ) ) return T1_Err_Invalid_File_Format; have_integer = 0; } /* look for immediates */ else if ( *cur == '/' && cur + 2 < limit ) { FT_PtrDist len; cur++; parser->root.cursor = cur; T1_Skip_PS_Token( parser ); if ( parser->root.error ) goto Exit; len = parser->root.cursor - cur; if ( len > 0 && len < 22 && parser->root.cursor < limit ) { /* now compare the immediate name to the keyword table */ T1_Field keyword = (T1_Field)t1_keywords; for (;;) { FT_Byte* name; name = (FT_Byte*)keyword->ident; if ( !name ) break; if ( cur[0] == name[0] && len == (FT_PtrDist)ft_strlen( (const char *)name ) && ft_memcmp( cur, name, len ) == 0 ) { /* We found it -- run the parsing callback! */ /* We record every instance of every field */ /* (until we reach the base font of a */ /* synthetic font) to deal adequately with */ /* multiple master fonts; this is also */ /* necessary because later PostScript */ /* definitions override earlier ones. */ /* Once we encounter `FontDirectory' after */ /* `/Private', we know that this is a synthetic */ /* font; except for `/CharStrings' we are not */ /* interested in anything that follows this */ /* `FontDirectory'. */ /* MM fonts have more than one /Private token at */ /* the top level; let's hope that all the junk */ /* that follows the first /Private token is not */ /* interesting to us. */ /* According to Adobe Tech Note #5175 (CID-Keyed */ /* Font Installation for ATM Software) a `begin' */ /* must be followed by exactly one `end', and */ /* `begin' -- `end' pairs must be accurately */ /* paired. We could use this to distinguish */ /* between the global Private and the Private */ /* dict that is a member of the Blend dict. */ const FT_UInt dict = ( loader->keywords_encountered & T1_PRIVATE ) ? T1_FIELD_DICT_PRIVATE : T1_FIELD_DICT_FONTDICT; if ( !( dict & keyword->dict ) ) { FT_TRACE1(( "parse_dict: found %s but ignoring it " "since it is in the wrong dictionary\n", keyword->ident )); break; } if ( !( loader->keywords_encountered & T1_FONTDIR_AFTER_PRIVATE ) || ft_strcmp( (const char*)name, "CharStrings" ) == 0 ) { parser->root.error = t1_load_keyword( face, loader, keyword ); if ( parser->root.error != T1_Err_Ok ) { if ( FT_ERROR_BASE( parser->root.error ) == FT_Err_Ignore ) parser->root.error = T1_Err_Ok; else return parser->root.error; } } break; } keyword++; } } have_integer = 0; } else { T1_Skip_PS_Token( parser ); if ( parser->root.error ) goto Exit; have_integer = 0; } T1_Skip_Spaces( parser ); } Exit: return parser->root.error; } static void t1_init_loader( T1_Loader loader, T1_Face face ) { FT_UNUSED( face ); FT_MEM_ZERO( loader, sizeof ( *loader ) ); loader->num_glyphs = 0; loader->num_chars = 0; /* initialize the tables -- simply set their `init' field to 0 */ loader->encoding_table.init = 0; loader->charstrings.init = 0; loader->glyph_names.init = 0; loader->subrs.init = 0; loader->swap_table.init = 0; loader->fontdata = 0; loader->keywords_encountered = 0; } static void t1_done_loader( T1_Loader loader ) { T1_Parser parser = &loader->parser; /* finalize tables */ T1_Release_Table( &loader->encoding_table ); T1_Release_Table( &loader->charstrings ); T1_Release_Table( &loader->glyph_names ); T1_Release_Table( &loader->swap_table ); T1_Release_Table( &loader->subrs ); /* finalize parser */ T1_Finalize_Parser( parser ); } FT_LOCAL_DEF( FT_Error ) T1_Open_Face( T1_Face face ) { T1_LoaderRec loader; T1_Parser parser; T1_Font type1 = &face->type1; PS_Private priv = &type1->private_dict; FT_Error error; PSAux_Service psaux = (PSAux_Service)face->psaux; t1_init_loader( &loader, face ); /* default values */ face->ndv_idx = -1; face->cdv_idx = -1; face->len_buildchar = 0; priv->blue_shift = 7; priv->blue_fuzz = 1; priv->lenIV = 4; priv->expansion_factor = (FT_Fixed)( 0.06 * 0x10000L ); priv->blue_scale = (FT_Fixed)( 0.039625 * 0x10000L * 1000 ); parser = &loader.parser; error = T1_New_Parser( parser, face->root.stream, face->root.memory, psaux ); if ( error ) goto Exit; error = parse_dict( face, &loader, parser->base_dict, parser->base_len ); if ( error ) goto Exit; error = T1_Get_Private_Dict( parser, psaux ); if ( error ) goto Exit; error = parse_dict( face, &loader, parser->private_dict, parser->private_len ); if ( error ) goto Exit; /* ensure even-ness of `num_blue_values' */ priv->num_blue_values &= ~1; #ifndef T1_CONFIG_OPTION_NO_MM_SUPPORT if ( face->blend && face->blend->num_default_design_vector != 0 && face->blend->num_default_design_vector != face->blend->num_axis ) { /* we don't use it currently so just warn, reset, and ignore */ FT_ERROR(( "T1_Open_Face(): /DesignVector contains %u entries " "while there are %u axes.\n", face->blend->num_default_design_vector, face->blend->num_axis )); face->blend->num_default_design_vector = 0; } /* the following can happen for MM instances; we then treat the */ /* font as a normal PS font */ if ( face->blend && ( !face->blend->num_designs || !face->blend->num_axis ) ) T1_Done_Blend( face ); /* another safety check */ if ( face->blend ) { FT_UInt i; for ( i = 0; i < face->blend->num_axis; i++ ) if ( !face->blend->design_map[i].num_points ) { T1_Done_Blend( face ); break; } } if ( face->blend ) { if ( face->len_buildchar > 0 ) { FT_Memory memory = face->root.memory; if ( FT_NEW_ARRAY( face->buildchar, face->len_buildchar ) ) { FT_ERROR(( "T1_Open_Face: cannot allocate BuildCharArray\n" )); face->len_buildchar = 0; goto Exit; } } } #endif /* T1_CONFIG_OPTION_NO_MM_SUPPORT */ /* now, propagate the subrs, charstrings, and glyphnames tables */ /* to the Type1 data */ type1->num_glyphs = loader.num_glyphs; if ( loader.subrs.init ) { loader.subrs.init = 0; type1->num_subrs = loader.num_subrs; type1->subrs_block = loader.subrs.block; type1->subrs = loader.subrs.elements; type1->subrs_len = loader.subrs.lengths; } #ifdef FT_CONFIG_OPTION_INCREMENTAL if ( !face->root.internal->incremental_interface ) #endif if ( !loader.charstrings.init ) { FT_ERROR(( "T1_Open_Face: no `/CharStrings' array in face\n" )); error = T1_Err_Invalid_File_Format; } loader.charstrings.init = 0; type1->charstrings_block = loader.charstrings.block; type1->charstrings = loader.charstrings.elements; type1->charstrings_len = loader.charstrings.lengths; /* we copy the glyph names `block' and `elements' fields; */ /* the `lengths' field must be released later */ type1->glyph_names_block = loader.glyph_names.block; type1->glyph_names = (FT_String**)loader.glyph_names.elements; loader.glyph_names.block = 0; loader.glyph_names.elements = 0; /* we must now build type1.encoding when we have a custom array */ if ( type1->encoding_type == T1_ENCODING_TYPE_ARRAY ) { FT_Int charcode, idx, min_char, max_char; FT_Byte* char_name; FT_Byte* glyph_name; /* OK, we do the following: for each element in the encoding */ /* table, look up the index of the glyph having the same name */ /* the index is then stored in type1.encoding.char_index, and */ /* the name to type1.encoding.char_name */ min_char = 0; max_char = 0; charcode = 0; for ( ; charcode < loader.encoding_table.max_elems; charcode++ ) { type1->encoding.char_index[charcode] = 0; type1->encoding.char_name [charcode] = (char *)".notdef"; char_name = loader.encoding_table.elements[charcode]; if ( char_name ) for ( idx = 0; idx < type1->num_glyphs; idx++ ) { glyph_name = (FT_Byte*)type1->glyph_names[idx]; if ( ft_strcmp( (const char*)char_name, (const char*)glyph_name ) == 0 ) { type1->encoding.char_index[charcode] = (FT_UShort)idx; type1->encoding.char_name [charcode] = (char*)glyph_name; /* Change min/max encoded char only if glyph name is */ /* not /.notdef */ if ( ft_strcmp( (const char*)".notdef", (const char*)glyph_name ) != 0 ) { if ( charcode < min_char ) min_char = charcode; if ( charcode >= max_char ) max_char = charcode + 1; } break; } } } type1->encoding.code_first = min_char; type1->encoding.code_last = max_char; type1->encoding.num_chars = loader.num_chars; } Exit: t1_done_loader( &loader ); return error; } /* END */