--- a/misc/libfreetype/src/type1/t1load.c Thu Jul 25 23:16:06 2013 +0200
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,2237 +0,0 @@
-/***************************************************************************/
-/* */
-/* 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 */