X-Git-Url: https://git.octo.it/?p=rrdtool.git;a=blobdiff_plain;f=libraries%2Ffreetype-2.0.5%2Ft1load.c;fp=libraries%2Ffreetype-2.0.5%2Ft1load.c;h=0000000000000000000000000000000000000000;hp=ce6607ff3ad6bdcb12522a789ddb5fd7085ec38a;hb=bab0189ee9d56aca8bea909275317ab4e0be09ee;hpb=b837c0527f117b54845242ee7626df6d88394444 diff --git a/libraries/freetype-2.0.5/t1load.c b/libraries/freetype-2.0.5/t1load.c deleted file mode 100644 index ce6607f..0000000 --- a/libraries/freetype-2.0.5/t1load.c +++ /dev/null @@ -1,1733 +0,0 @@ -/***************************************************************************/ -/* */ -/* t1load.c */ -/* */ -/* Type 1 font loader (body). */ -/* */ -/* Copyright 1996-2001 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 ... */ - /* */ - /* where 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 to generate a table of keywords (with */ - /* pointers to the associated callback). */ - /* */ - /* 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 -#include FT_INTERNAL_DEBUG_H -#include FT_CONFIG_CONFIG_H -#include FT_MULTIPLE_MASTERS_H -#include FT_INTERNAL_TYPE1_TYPES_H - -#include "t1load.h" - -#include "t1errors.h" - -#include /* for strncmp(), strcmp() */ -#include /* for isalnum() */ - - - /*************************************************************************/ - /* */ - /* 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 ) - { - T1_Blend* blend; - FT_Memory memory = face->root.memory; - FT_Error error = 0; - - - blend = face->blend; - if ( !blend ) - { - if ( ALLOC( blend, sizeof ( *blend ) ) ) - goto Exit; - - 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 ( ALLOC_ARRAY( blend->font_infos[1], num_designs, T1_FontInfo ) || - ALLOC_ARRAY( blend->privates[1], num_designs, T1_Private ) || - ALLOC_ARRAY( blend->weight_vector, num_designs * 2, FT_Fixed ) ) - 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; - - 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->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 ( ALLOC_ARRAY( blend->design_pos[0], - num_designs * num_axis, FT_Fixed ) ) - 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 = -1; - goto Exit; - } - - - FT_LOCAL_DEF FT_Error - T1_Get_Multi_Master( T1_Face face, - FT_Multi_Master* master ) - { - T1_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; - T1_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 = 0; - } - return error; - } - - - FT_LOCAL_DEF FT_Error - T1_Set_MM_Blend( T1_Face face, - FT_UInt num_coords, - FT_Fixed* coords ) - { - T1_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 ) - { - T1_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; - T1_DesignMap* map = blend->design_map + n; - FT_Fixed* 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_Fixed 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 needed */ - 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; - } - - - FT_LOCAL_DEF void - T1_Done_Blend( T1_Face face ) - { - FT_Memory memory = face->root.memory; - T1_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 */ - FREE( blend->design_pos[0] ); - for ( n = 1; n < num_designs; n++ ) - blend->design_pos[n] = 0; - - /* release blend `private' and `font info' dictionaries */ - FREE( blend->privates[1] ); - FREE( blend->font_infos[1] ); - - for ( n = 0; n < num_designs; n++ ) - { - blend->privates [n] = 0; - blend->font_infos[n] = 0; - } - - /* release weight vectors */ - FREE( blend->weight_vector ); - blend->default_weight_vector = 0; - - /* release axis names */ - for ( n = 0; n < num_axis; n++ ) - FREE( blend->axis_names[n] ); - - /* release design map */ - for ( n = 0; n < num_axis; n++ ) - { - T1_DesignMap* dmap = blend->design_map + n; - - - FREE( dmap->design_points ); - dmap->num_points = 0; - } - - FREE( face->blend ); - } - } - - - static void - parse_blend_axis_types( T1_Face face, - T1_Loader* loader ) - { - T1_Token axis_tokens[ T1_MAX_MM_AXIS ]; - FT_Int n, num_axis; - FT_Error error = 0; - T1_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 || 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_Int len; - - /* skip first slash, if any */ - if (token->start[0] == '/') - token->start++; - - len = (FT_Int)( token->limit - token->start ); - if ( len <= 0 ) - { - error = T1_Err_Invalid_File_Format; - goto Exit; - } - - if ( ALLOC( blend->axis_names[n], len + 1 ) ) - goto Exit; - - name = (FT_Byte*)blend->axis_names[n]; - 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_Token design_tokens[ T1_MAX_MM_DESIGNS ]; - FT_Int num_designs; - FT_Int num_axis; - T1_ParserRec* parser = &loader->parser; - - FT_Error error = 0; - T1_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 || num_designs > T1_MAX_MM_DESIGNS ) - { - FT_ERROR(( "parse_blend_design_positions:" )); - FT_ERROR(( " 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_UInt n; - - - blend = face->blend; - num_axis = 0; /* make compiler happy */ - - for ( n = 0; n < (FT_UInt)num_designs; n++ ) - { - T1_Token axis_tokens[ T1_MAX_MM_DESIGNS ]; - T1_Token* token; - FT_Int axis, n_axis; - - - /* read axis/coordinates tokens */ - token = design_tokens + n; - parser->root.cursor = token->start - 1; - parser->root.limit = token->limit + 1; - T1_ToTokenArray( parser, axis_tokens, T1_MAX_MM_AXIS, &n_axis ); - - if ( n == 0 ) - { - 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 = 0; - T1_ParserRec* parser = &loader->parser; - T1_Blend* blend; - T1_Token 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 || 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++ ) - { - T1_DesignMap* map = blend->design_map + n; - T1_Token* token; - FT_Int p, num_points; - - - token = axis_tokens + n; - parser->root.cursor = token->start; - parser->root.limit = token->limit; - - /* count the number of map points */ - { - FT_Byte* ptr = token->start; - FT_Byte* limit = token->limit; - - - num_points = 0; - for ( ; ptr < limit; ptr++ ) - if ( ptr[0] == '[' ) - 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 ( ALLOC_ARRAY( map->design_points, num_points * 2, FT_Fixed ) ) - goto Exit; - map->blend_points = map->design_points + num_points; - map->num_points = (FT_Byte)num_points; - - for ( p = 0; p < num_points; p++ ) - { - 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 ) - { - FT_Error error = 0; - T1_ParserRec* parser = &loader->parser; - T1_Blend* blend = face->blend; - T1_Token master; - FT_UInt n; - FT_Byte* old_cursor; - FT_Byte* old_limit; - - - if ( !blend || blend->num_designs == 0 ) - { - FT_ERROR(( "parse_weight_vector: too early!\n" )); - error = T1_Err_Invalid_File_Format; - goto Exit; - } - - T1_ToToken( parser, &master ); - if ( master.type != t1_token_array ) - { - FT_ERROR(( "parse_weight_vector: incorrect format!\n" )); - error = T1_Err_Invalid_File_Format; - goto Exit; - } - - old_cursor = parser->root.cursor; - old_limit = parser->root.limit; - - parser->root.cursor = master.start; - parser->root.limit = master.limit; - - for ( n = 0; n < blend->num_designs; n++ ) - { - 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; - } - - - /* the keyword `/shareddict' appears in some multiple master fonts */ - /* with a lot of Postscript garbage behind it (that's completely out */ - /* of spec!); we detect it and terminate the parsing */ - /* */ - static void - parse_shared_dict( T1_Face face, - T1_Loader* loader ) - { - T1_ParserRec* parser = &loader->parser; - - FT_UNUSED( face ); - - - parser->root.cursor = parser->root.limit; - parser->root.error = 0; - } - -#endif /* T1_CONFIG_OPTION_NO_MM_SUPPORT */ - - - /*************************************************************************/ - /*************************************************************************/ - /***** *****/ - /***** TYPE 1 SYMBOL PARSING *****/ - /***** *****/ - /*************************************************************************/ - /*************************************************************************/ - - - /*************************************************************************/ - /* */ - /* First of all, define the token field static variables. This is a set */ - /* of T1_Field variables used later. */ - /* */ - /*************************************************************************/ - - - static FT_Error - t1_load_keyword( T1_Face face, - T1_Loader* loader, - T1_Field* field ) - { - FT_Error error; - void* dummy_object; - void** objects; - FT_UInt max_objects; - T1_Blend* blend = face->blend; - - - /* if the keyword has a dedicated callback, call it */ - if ( field->type == t1_field_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_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_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; - - default: - dummy_object = &face->type1; - objects = &dummy_object; - max_objects = 0; - } - - if ( field->type == t1_field_integer_array || - field->type == t1_field_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 int - is_space( FT_Byte c ) - { - return ( c == ' ' || c == '\t' || c == '\r' || c == '\n' ); - } - - - static int - is_alpha( FT_Byte c ) - { - /* Note: we must accept "+" as a valid character, as it is used in */ - /* embedded type1 fonts in PDF documents. */ - /* */ - return ( isalnum( c ) || c == '.' || c == '_' || c == '-' || c == '+' ); - } - - - static int - read_binary_data( T1_ParserRec* parser, - FT_Int* size, - FT_Byte** base ) - { - FT_Byte* cur; - FT_Byte* limit = parser->root.limit; - - - /* the binary data has the following format */ - /* */ - /* `size' [white*] RD white ....... ND */ - /* */ - - T1_Skip_Spaces( parser ); - cur = parser->root.cursor; - - if ( cur < limit && (FT_Byte)( *cur - '0' ) < 10 ) - { - *size = T1_ToInt( parser ); - - T1_Skip_Spaces( parser ); - T1_Skip_Alpha ( parser ); /* `RD' or `-|' or something else */ - - /* there is only one whitespace char after the */ - /* `RD' or `-|' token */ - *base = parser->root.cursor + 1; - - parser->root.cursor += *size + 1; - return 1; - } - - FT_ERROR(( "read_binary_data: invalid size field\n" )); - parser->root.error = T1_Err_Invalid_File_Format; - return 0; - } - - - /* we will now define the routines used to handle */ - /* the `/Encoding', `/Subrs', and `/CharStrings' */ - /* dictionaries */ - - static void - parse_font_name( T1_Face face, - T1_Loader* loader ) - { - T1_ParserRec* parser = &loader->parser; - FT_Error error; - FT_Memory memory = parser->root.memory; - FT_Int len; - FT_Byte* cur; - FT_Byte* cur2; - FT_Byte* limit; - - - T1_Skip_Spaces( parser ); - - cur = parser->root.cursor; - limit = parser->root.limit; - - if ( cur >= limit - 1 || *cur != '/' ) - return; - - cur++; - cur2 = cur; - while ( cur2 < limit && is_alpha( *cur2 ) ) - cur2++; - - len = (FT_Int)( cur2 - cur ); - if ( len > 0 ) - { - if ( ALLOC( face->type1.font_name, len + 1 ) ) - { - parser->root.error = error; - return; - } - - MEM_Copy( face->type1.font_name, cur, len ); - face->type1.font_name[len] = '\0'; - } - parser->root.cursor = cur2; - } - - - static void - parse_font_bbox( T1_Face face, - T1_Loader* loader ) - { - T1_ParserRec* parser = &loader->parser; - FT_Fixed temp[4]; - FT_BBox* bbox = &face->type1.font_bbox; - - - (void)T1_ToFixedArray( parser, 4, temp, 0 ); - bbox->xMin = FT_RoundFix( temp[0] ); - bbox->yMin = FT_RoundFix( temp[1] ); - bbox->xMax = FT_RoundFix( temp[2] ); - bbox->yMax = FT_RoundFix( temp[3] ); - } - - - static void - parse_font_matrix( T1_Face face, - T1_Loader* loader ) - { - T1_ParserRec* 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; - - - if ( matrix->xx || matrix->yx ) - /* with synthetic fonts, it's possible we get here twice */ - return; - - (void)T1_ToFixedArray( parser, 6, temp, 3 ); - - temp_scale = ABS( temp[3] ); - - /* Set Units per EM based on FontMatrix values. We set the value to */ - /* 1000 / temp_scale, because temp_scale was already multiplied by */ - /* 1000 (in t1_tofixed, from psobjs.c). */ - - root->units_per_EM = (FT_UShort)( FT_DivFix( 1000 * 0x10000L, - temp_scale ) >> 16 ); - - /* we need to scale the values by 1.0/temp_scale */ - if ( temp_scale != 0x10000L ) - { - temp[0] = FT_DivFix( temp[0], temp_scale ); - temp[1] = FT_DivFix( temp[1], temp_scale ); - temp[2] = FT_DivFix( temp[2], temp_scale ); - temp[4] = FT_DivFix( temp[4], temp_scale ); - temp[5] = FT_DivFix( temp[5], temp_scale ); - temp[3] = 0x10000L; - } - - matrix->xx = temp[0]; - matrix->yx = temp[1]; - matrix->xy = temp[2]; - matrix->yy = temp[3]; - - /* note that the offsets must be expressed in integer font units */ - offset->x = temp[4] >> 16; - offset->y = temp[5] >> 16; - } - - - static void - parse_encoding( T1_Face face, - T1_Loader* loader ) - { - T1_ParserRec* parser = &loader->parser; - FT_Byte* cur = parser->root.cursor; - FT_Byte* limit = parser->root.limit; - - PSAux_Interface* psaux = (PSAux_Interface*)face->psaux; - - - /* skip whitespace */ - while ( is_space( *cur ) ) - { - cur++; - 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, then the encoding is an array, */ - /* and we must load it now */ - if ( (FT_Byte)( *cur - '0' ) < 10 ) - { - 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; - - - /* read the number of entries in the encoding, should be 256 */ - count = T1_ToInt( parser ); - if ( parser->root.error ) - return; - - /* we use a T1_Table to store our charnames */ - encode->num_chars = count; - if ( ALLOC_ARRAY( encode->char_index, count, FT_Short ) || - ALLOC_ARRAY( encode->char_name, count, FT_String* ) || - ( error = psaux->ps_table_funcs->init( - char_table, count, memory ) ) != 0 ) - { - 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 will need to read a record 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. */ - /* */ - /* We stop when we encounter a `def'. */ - - cur = parser->root.cursor; - limit = parser->root.limit; - n = 0; - - for ( ; cur < limit; ) - { - FT_Byte c; - - - c = *cur; - - /* we stop when we encounter a `def' */ - if ( c == 'd' && cur + 3 < limit ) - { - if ( cur[1] == 'e' && - cur[2] == 'f' && - is_space(cur[-1]) && - is_space(cur[3]) ) - { - FT_TRACE6(( "encoding end\n" )); - break; - } - } - - /* otherwise, we must find a number before anything else */ - if ( (FT_Byte)( c - '0' ) < 10 ) - { - FT_Int charcode; - - - parser->root.cursor = cur; - charcode = T1_ToInt( parser ); - cur = parser->root.cursor; - - /* skip whitespace */ - while ( cur < limit && is_space( *cur ) ) - cur++; - - if ( cur < limit && *cur == '/' ) - { - /* bingo, we have an immediate name -- it must be a */ - /* character name */ - FT_Byte* cur2 = cur + 1; - FT_Int len; - - - while ( cur2 < limit && is_alpha( *cur2 ) ) - cur2++; - - len = (FT_Int)( cur2 - cur - 1 ); - - parser->root.error = T1_Add_Table( char_table, charcode, - cur + 1, len + 1 ); - char_table->elements[charcode][len] = '\0'; - if ( parser->root.error ) - return; - - cur = cur2; - } - } - else - cur++; - } - - face->type1.encoding_type = t1_encoding_array; - parser->root.cursor = cur; - } - /* Otherwise, we should have either `StandardEncoding' or */ - /* `ExpertEncoding' */ - else - { - if ( cur + 17 < limit && - strncmp( (const char*)cur, "StandardEncoding", 16 ) == 0 ) - face->type1.encoding_type = t1_encoding_standard; - - else if ( cur + 15 < limit && - strncmp( (const char*)cur, "ExpertEncoding", 14 ) == 0 ) - face->type1.encoding_type = t1_encoding_expert; - - else - { - FT_ERROR(( "parse_encoding: invalid token!\n" )); - parser->root.error = T1_Err_Invalid_File_Format; - } - } - } - - - static void - parse_subrs( T1_Face face, - T1_Loader* loader ) - { - T1_ParserRec* parser = &loader->parser; - PS_Table* table = &loader->subrs; - FT_Memory memory = parser->root.memory; - FT_Error error; - FT_Int n; - - PSAux_Interface* psaux = (PSAux_Interface*)face->psaux; - - - loader->num_subrs = T1_ToInt( parser ); - if ( parser->root.error ) - return; - - /* position the parser right before the `dup' of the first subr */ - T1_Skip_Spaces( parser ); - T1_Skip_Alpha( parser ); /* `array' */ - T1_Skip_Spaces( parser ); - - /* initialize subrs array */ - error = psaux->ps_table_funcs->init( table, loader->num_subrs, memory ); - if ( error ) - goto Fail; - - /* the format is simple: */ - /* */ - /* `index' + binary data */ - /* */ - - for ( n = 0; n < loader->num_subrs; n++ ) - { - FT_Int index, size; - FT_Byte* base; - - - /* If the next token isn't `dup', we are also done. This */ - /* happens when there are `holes' in the Subrs array. */ - if ( strncmp( (char*)parser->root.cursor, "dup", 3 ) != 0 ) - break; - - index = 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_Spaces( parser ); - T1_Skip_Alpha( parser ); /* `NP' or `I' or `noaccess' */ - T1_Skip_Spaces( parser ); - - if ( strncmp( (char*)parser->root.cursor, "put", 3 ) == 0 ) - { - T1_Skip_Alpha( parser ); /* skip `put' */ - T1_Skip_Spaces( parser ); - } - - /* 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 ) - { - psaux->t1_decrypt( base, size, 4330 ); - size -= face->type1.private_dict.lenIV; - base += face->type1.private_dict.lenIV; - } - - error = T1_Add_Table( table, index, base, size ); - if ( error ) - goto Fail; - } - return; - - Fail: - parser->root.error = error; - } - - - static void - parse_charstrings( T1_Face face, - T1_Loader* loader ) - { - T1_ParserRec* 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_Interface* psaux = (PSAux_Interface*)face->psaux; - - FT_Byte* cur; - FT_Byte* limit = parser->root.limit; - FT_Int n; - FT_UInt notdef_index = 0; - FT_Byte notdef_found = 0; - - - if ( loader->num_glyphs ) - /* with synthetic fonts, it's possible we get here twice */ - return; - - loader->num_glyphs = T1_ToInt( parser ); - if ( parser->root.error ) - return; - - /* initialize tables (leaving room for addition of .notdef, */ - /* if necessary). */ - - error = psaux->ps_table_funcs->init( code_table, - loader->num_glyphs + 1, - memory ); - if ( error ) - goto Fail; - - error = psaux->ps_table_funcs->init( name_table, - loader->num_glyphs + 1, - 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_Int size; - FT_Byte* base; - - - /* the format is simple: */ - /* `/glyphname' + binary data */ - /* */ - /* note that we stop when we find a `def' */ - /* */ - T1_Skip_Spaces( parser ); - - cur = parser->root.cursor; - if ( cur >= limit ) - break; - - /* we stop when we find a `def' or `end' keyword */ - if ( *cur == 'd' && - cur + 3 < limit && - cur[1] == 'e' && - cur[2] == 'f' ) - break; - - if ( *cur == 'e' && - cur + 3 < limit && - cur[1] == 'n' && - cur[2] == 'd' ) - break; - - if ( *cur != '/' ) - T1_Skip_Alpha( parser ); - else - { - FT_Byte* cur2 = cur + 1; - FT_Int len; - - - while ( cur2 < limit && is_alpha( *cur2 ) ) - cur2++; - len = (FT_Int)( cur2 - cur - 1 ); - - error = T1_Add_Table( name_table, n, cur + 1, 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 ( strcmp( (const char*)".notdef", - (const char*)(name_table->elements[n]) ) == 0 ) - { - notdef_index = n; - notdef_found = 1; - } - - parser->root.cursor = cur2; - if ( !read_binary_data( parser, &size, &base ) ) - return; - - if ( face->type1.private_dict.lenIV >= 0 ) - { - psaux->t1_decrypt( base, size, 4330 ); - size -= face->type1.private_dict.lenIV; - base += face->type1.private_dict.lenIV; - } - - error = T1_Add_Table( code_table, n, base, size ); - if ( error ) - goto Fail; - - n++; - if ( n >= loader->num_glyphs ) - break; - } - } - - loader->num_glyphs = n; - - /* if /.notdef is found but does not occupy index 0, do our magic. */ - if ( strcmp( (const char*)".notdef", - (const char*)name_table->elements[0] ) && - notdef_found ) - { - /* 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 = n + 1; - - } - - - return; - - Fail: - parser->root.error = error; - } - - - static - const T1_Field t1_keywords[] = - { - -#include "t1tokens.h" - - /* now add the special functions... */ - T1_FIELD_CALLBACK( "FontName", parse_font_name ) - T1_FIELD_CALLBACK( "FontBBox", parse_font_bbox ) - T1_FIELD_CALLBACK( "FontMatrix", parse_font_matrix ) - T1_FIELD_CALLBACK( "Encoding", parse_encoding ) - T1_FIELD_CALLBACK( "Subrs", parse_subrs ) - T1_FIELD_CALLBACK( "CharStrings", parse_charstrings ) - -#ifndef T1_CONFIG_OPTION_NO_MM_SUPPORT - T1_FIELD_CALLBACK( "BlendDesignPositions", parse_blend_design_positions ) - T1_FIELD_CALLBACK( "BlendDesignMap", parse_blend_design_map ) - T1_FIELD_CALLBACK( "BlendAxisTypes", parse_blend_axis_types ) - T1_FIELD_CALLBACK( "WeightVector", parse_weight_vector ) - T1_FIELD_CALLBACK( "shareddict", parse_shared_dict ) -#endif - - { 0, t1_field_cid_info, t1_field_none, 0, 0, 0, 0, 0 } - }; - - - static FT_Error - parse_dict( T1_Face face, - T1_Loader* loader, - FT_Byte* base, - FT_Long size ) - { - T1_ParserRec* parser = &loader->parser; - - - parser->root.cursor = base; - parser->root.limit = base + size; - parser->root.error = 0; - - { - FT_Byte* cur = base; - FT_Byte* limit = cur + size; - - - for ( ; cur < limit; cur++ ) - { - /* look for `FontDirectory', which causes problems on some fonts */ - if ( *cur == 'F' && cur + 25 < limit && - strncmp( (char*)cur, "FontDirectory", 13 ) == 0 ) - { - FT_Byte* cur2; - - - /* skip the `FontDirectory' keyword */ - cur += 13; - cur2 = cur; - - /* lookup the `known' keyword */ - while ( cur < limit && *cur != 'k' && - strncmp( (char*)cur, "known", 5 ) ) - cur++; - - if ( cur < limit ) - { - T1_Token token; - - - /* skip the `known' keyword and the token following it */ - cur += 5; - loader->parser.root.cursor = cur; - T1_ToToken( &loader->parser, &token ); - - /* if the last token was an array, skip it! */ - if ( token.type == t1_token_array ) - cur2 = parser->root.cursor; - } - cur = cur2; - } - /* look for immediates */ - else if ( *cur == '/' && cur + 2 < limit ) - { - FT_Byte* cur2; - FT_Int len; - - - cur++; - cur2 = cur; - while ( cur2 < limit && is_alpha( *cur2 ) ) - cur2++; - - len = (FT_Int)( cur2 - cur ); - if ( len > 0 && len < 22 ) - { - { - /* 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_Int)strlen( (const char*)name ) ) - { - FT_Int n; - - - for ( n = 1; n < len; n++ ) - if ( cur[n] != name[n] ) - break; - - if ( n >= len ) - { - /* we found it -- run the parsing callback! */ - parser->root.cursor = cur2; - T1_Skip_Spaces( parser ); - parser->root.error = t1_load_keyword( face, - loader, - keyword ); - if ( parser->root.error ) - return parser->root.error; - - cur = parser->root.cursor; - break; - } - } - keyword++; - } - } - } - } - } - } - return parser->root.error; - } - - - static void - t1_init_loader( T1_Loader* loader, - T1_Face face ) - { - FT_UNUSED( face ); - - MEM_Set( loader, 0, 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; - } - - - static void - t1_done_loader( T1_Loader* loader ) - { - T1_ParserRec* 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_Loader loader; - T1_ParserRec* parser; - T1_Font* type1 = &face->type1; - FT_Error error; - - PSAux_Interface* psaux = (PSAux_Interface*)face->psaux; - - - t1_init_loader( &loader, face ); - - /* default lenIV */ - type1->private_dict.lenIV = 4; - - 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; - - /* 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; - } - - 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_array ) - { - FT_Int charcode, index, 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 */ - /* a the name to type1.encoding.char_name */ - - min_char = +32000; - max_char = -32000; - - 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 ( index = 0; index < type1->num_glyphs; index++ ) - { - glyph_name = (FT_Byte*)type1->glyph_names[index]; - if ( strcmp( (const char*)char_name, - (const char*)glyph_name ) == 0 ) - { - type1->encoding.char_index[charcode] = (FT_UShort)index; - type1->encoding.char_name [charcode] = (char*)glyph_name; - - /* Change min/max encoded char only if glyph name is */ - /* not /.notdef */ - if ( strcmp( (const char*)".notdef", - (const char*)glyph_name ) != 0 ) - { - if (charcode < min_char) min_char = charcode; - if (charcode > max_char) max_char = charcode; - } - 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 */