--- /dev/null
+/***************************************************************************/
+/* */
+/* t1load.c */
+/* */
+/* Type 1 font loader (body). */
+/* */
+/* Copyright 1996-2001, 2002 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 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 <ft2build.h>
+#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"
+
+
+
+ /*************************************************************************/
+ /* */
+ /* 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 = 0;
+
+
+ blend = face->blend;
+ if ( !blend )
+ {
+ if ( FT_NEW( 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 ( 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 = -1;
+ 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 = 0;
+ }
+ 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_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;
+ 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 = 0;
+ 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 || 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 = 0;
+ 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 || 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_TokenRec 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_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 || 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 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 ( 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++ )
+ {
+ 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_Parser parser = &loader->parser;
+ PS_Blend blend = face->blend;
+ T1_TokenRec 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_TYPE_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_Parser 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_FieldRec 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;
+ 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_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;
+
+ 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 int
+ is_space( FT_Byte c )
+ {
+ return ( c == ' ' || c == '\t' || c == '\r' || c == '\n' );
+ }
+
+
+ static int
+ is_name_char( FT_Byte c )
+ {
+ /* Note: PostScript allows any non-delimiting, non-whitespace */
+ /* in a name (PS Ref Manual, 3rd Ed, p31) */
+ /* PostScript delimiters include (,),<,>,[,],{,},/ and % */
+
+ return ( c != '(' &&
+ c != ')' &&
+ c != '<' &&
+ c != '>' &&
+ c != '[' &&
+ c != ']' &&
+ c != '{' &&
+ c != '}' &&
+ c != '/' &&
+ c != '%' &&
+ ! is_space( c )
+ );
+ }
+
+
+ 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 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_Parser parser = &loader->parser;
+ FT_Error error;
+ FT_Memory memory = parser->root.memory;
+ FT_PtrDist len;
+ FT_Byte* cur;
+ FT_Byte* cur2;
+ FT_Byte* limit;
+
+
+ if ( face->type1.font_name )
+ /* with synthetic fonts, it's possible we get here twice */
+ return;
+
+ 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_name_char( *cur2 ) )
+ cur2++;
+
+ len = cur2 - cur;
+ if ( len > 0 )
+ {
+ if ( FT_ALLOC( face->type1.font_name, len + 1 ) )
+ {
+ parser->root.error = error;
+ return;
+ }
+
+ FT_MEM_COPY( face->type1.font_name, cur, len );
+ face->type1.font_name[len] = '\0';
+ }
+ parser->root.cursor = cur2;
+ }
+
+
+#if 0
+ static void
+ parse_font_bbox( T1_Face face,
+ T1_Loader loader )
+ {
+ T1_Parser 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] );
+ }
+#endif
+
+
+ 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;
+
+
+ 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_Parser parser = &loader->parser;
+ FT_Byte* cur = parser->root.cursor;
+ FT_Byte* limit = parser->root.limit;
+
+ PSAux_Service psaux = (PSAux_Service)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;
+
+
+ if ( encode->char_index )
+ /* with synthetic fonts, it's possible we get here twice */
+ return;
+
+ /* read the number of entries in the encoding, should be 256 */
+ count = (FT_Int)T1_ToInt( parser );
+ if ( parser->root.error )
+ 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 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 = (FT_Int)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_PtrDist len;
+
+
+ while ( cur2 < limit && is_name_char( *cur2 ) )
+ cur2++;
+
+ len = 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_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
+ {
+ 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_Parser parser = &loader->parser;
+ PS_Table table = &loader->subrs;
+ FT_Memory memory = parser->root.memory;
+ FT_Error error;
+ FT_Int n;
+
+ PSAux_Service psaux = (PSAux_Service)face->psaux;
+
+
+ if ( loader->num_subrs )
+ /* with synthetic fonts, it's possible we get here twice */
+ return;
+
+ if ( parser->root.cursor + 2 > parser->root.limit &&
+ parser->root.cursor[0] == '[' &&
+ parser->root.cursor[1] == ']' )
+ {
+ /* empty array */
+ return;
+ }
+
+ loader->num_subrs = (FT_Int)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_Long idx, 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 ( ft_strncmp( (char*)parser->root.cursor, "dup", 3 ) != 0 )
+ break;
+
+ 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_Spaces( parser );
+ T1_Skip_Alpha( parser ); /* `NP' or `I' or `noaccess' */
+ T1_Skip_Spaces( parser );
+
+ if ( ft_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 )
+ {
+ FT_Byte* temp;
+
+
+ /* 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, idx,
+ temp + face->type1.private_dict.lenIV, size );
+ FT_FREE( temp );
+ }
+ else
+ error = T1_Add_Table( table, idx, base, size );
+ if ( error )
+ goto Fail;
+ }
+ return;
+
+ Fail:
+ parser->root.error = error;
+ }
+
+
+ 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;
+ 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 = (FT_Int)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_Long 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_PtrDist len;
+
+
+ while ( cur2 < limit && is_name_char( *cur2 ) )
+ cur2++;
+ len = 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 ( ft_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 )
+ {
+ FT_Byte* temp;
+
+
+ /* 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++;
+ if ( n >= loader->num_glyphs )
+ break;
+ }
+ }
+
+ loader->num_glyphs = n;
+
+ /* if /.notdef is found but does not occupy index 0, do our magic. */
+ if ( ft_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_FieldRec t1_keywords[] =
+ {
+
+#include "t1tokens.h"
+
+ /* now add the special functions... */
+ T1_FIELD_CALLBACK( "FontName", parse_font_name )
+#if 0
+ T1_FIELD_CALLBACK( "FontBBox", parse_font_bbox )
+#endif
+ 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_LOCATION_CID_INFO, T1_FIELD_TYPE_NONE, 0, 0, 0, 0, 0 }
+ };
+
+
+ static FT_Error
+ parse_dict( T1_Face face,
+ T1_Loader loader,
+ FT_Byte* base,
+ FT_Long size )
+ {
+ T1_Parser 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 &&
+ ft_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' &&
+ ft_strncmp( (char*)cur, "known", 5 ) )
+ cur++;
+
+ if ( cur < limit )
+ {
+ T1_TokenRec 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_TYPE_ARRAY )
+ cur2 = parser->root.cursor;
+ }
+ cur = cur2;
+ }
+ /* look for immediates */
+ else if ( *cur == '/' && cur + 2 < limit )
+ {
+ FT_Byte* cur2;
+ FT_PtrDist len;
+
+
+ cur++;
+ cur2 = cur;
+ while ( cur2 < limit && is_name_char( *cur2 ) )
+ cur2++;
+
+ len = 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_strlen( (const char*)name ) )
+ {
+ FT_PtrDist 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 );
+
+ 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;
+ }
+
+
+ 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;
+ FT_Error error;
+
+ PSAux_Service psaux = (PSAux_Service)face->psaux;
+
+
+ t1_init_loader( &loader, face );
+
+ /* default lenIV */
+ type1->private_dict.lenIV = 4;
+
+ /* default blue fuzz, we put it there since 0 is a valid value */
+ type1->private_dict.blue_fuzz = 1;
+
+ 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;
+ }
+
+#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 */
+ /* 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 ( 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;
+ }
+ 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 */
git://git.jankratochvil.net / reactos.git / blobdiff