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src/java.desktop/share/native/libfreetype/src/type1/t1load.c
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@@ -1,65 +1,65 @@
-/***************************************************************************/
-/* */
-/* t1load.c */
-/* */
-/* Type 1 font loader (body). */
-/* */
-/* Copyright 1996-2018 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. */
-/* */
-/***************************************************************************/
+/****************************************************************************
+ *
+ * t1load.c
+ *
+ * Type 1 font loader (body).
+ *
+ * Copyright (C) 1996-2019 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'. */
- /* */
- /*************************************************************************/
+ /**************************************************************************
+ *
+ * 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
@@ -71,24 +71,24 @@
#include "t1load.h"
#include "t1errors.h"
#ifdef FT_CONFIG_OPTION_INCREMENTAL
-#define IS_INCREMENTAL (FT_Bool)( face->root.internal->incremental_interface != 0 )
+#define IS_INCREMENTAL FT_BOOL( face->root.internal->incremental_interface )
#else
#define IS_INCREMENTAL 0
#endif
- /*************************************************************************/
- /* */
- /* 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. */
- /* */
+ /**************************************************************************
+ *
+ * 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
+#define FT_COMPONENT t1load
#ifndef T1_CONFIG_OPTION_NO_MM_SUPPORT
@@ -220,15 +220,15 @@
return error;
}
- /*************************************************************************/
- /* */
- /* Given a normalized (blend) coordinate, figure out the design */
- /* coordinate appropriate for that value. */
- /* */
+ /**************************************************************************
+ *
+ * Given a normalized (blend) coordinate, figure out the design
+ * coordinate appropriate for that value.
+ */
static FT_Fixed
mm_axis_unmap( PS_DesignMap axismap,
FT_Fixed ncv )
{
int j;
@@ -249,15 +249,15 @@
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. */
- /* */
+ /**************************************************************************
+ *
+ * Given a vector of weights, one for each design, figure out the
+ * normalized axis coordinates which gave rise to those weights.
+ */
static void
mm_weights_unmap( FT_Fixed* weights,
FT_Fixed* axiscoords,
FT_UInt axis_count )
{
@@ -291,15 +291,15 @@
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. */
- /* */
+ /**************************************************************************
+ *
+ * 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;
@@ -346,20 +346,17 @@
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;
@@ -385,28 +382,35 @@
/* recompute the weight vector from the blend coordinates */
for ( n = 0; n < blend->num_designs; n++ )
{
FT_Fixed result = 0x10000L; /* 1.0 fixed */
+ FT_Fixed factor;
for ( m = 0; m < blend->num_axis; m++ )
{
- FT_Fixed factor;
-
-
- /* get current blend axis position; */
/* use a default value if we don't have a coordinate */
- factor = m < num_coords ? coords[m] : 0x8000;
- if ( factor < 0 )
- factor = 0;
- if ( factor > 0x10000L )
- factor = 0x10000L;
+ if ( m >= num_coords )
+ {
+ result >>= 1;
+ continue;
+ }
+ /* get current blend axis position */
+ factor = coords[m];
if ( ( n & ( 1 << m ) ) == 0 )
factor = 0x10000L - factor;
+ if ( factor <= 0 )
+ {
+ result = 0;
+ break;
+ }
+ else if ( factor >= 0x10000L )
+ continue;
+
result = FT_MulFix( result, factor );
}
if ( blend->weight_vector[n] != result )
{
@@ -475,10 +479,79 @@
return FT_Err_Ok;
}
FT_LOCAL_DEF( FT_Error )
+ T1_Set_MM_WeightVector( T1_Face face,
+ FT_UInt len,
+ FT_Fixed* weightvector )
+ {
+ PS_Blend blend = face->blend;
+ FT_UInt i, n;
+
+
+ if ( !blend )
+ return FT_THROW( Invalid_Argument );
+
+ if ( !len && !weightvector )
+ {
+ for ( i = 0; i < blend->num_designs; i++ )
+ blend->weight_vector[i] = blend->default_weight_vector[i];
+ }
+ else
+ {
+ if ( !weightvector )
+ return FT_THROW( Invalid_Argument );
+
+ n = len < blend->num_designs ? len : blend->num_designs;
+
+ for ( i = 0; i < n; i++ )
+ blend->weight_vector[i] = weightvector[i];
+
+ for ( ; i < blend->num_designs; i++ )
+ blend->weight_vector[i] = (FT_Fixed)0;
+
+ if ( len )
+ face->root.face_flags |= FT_FACE_FLAG_VARIATION;
+ else
+ face->root.face_flags &= ~FT_FACE_FLAG_VARIATION;
+ }
+
+ return FT_Err_Ok;
+ }
+
+
+ FT_LOCAL_DEF( FT_Error )
+ T1_Get_MM_WeightVector( T1_Face face,
+ FT_UInt* len,
+ FT_Fixed* weightvector )
+ {
+ PS_Blend blend = face->blend;
+ FT_UInt i;
+
+
+ if ( !blend )
+ return FT_THROW( Invalid_Argument );
+
+ if ( *len < blend->num_designs )
+ {
+ *len = blend->num_designs;
+ return FT_THROW( Invalid_Argument );
+ }
+
+ for ( i = 0; i < blend->num_designs; i++ )
+ weightvector[i] = blend->weight_vector[i];
+ for ( ; i < *len; i++ )
+ weightvector[i] = (FT_Fixed)0;
+
+ *len = blend->num_designs;
+
+ return FT_Err_Ok;
+ }
+
+
+ FT_LOCAL_DEF( FT_Error )
T1_Set_MM_Design( T1_Face face,
FT_UInt num_coords,
FT_Long* coords )
{
FT_Error error;
@@ -571,15 +644,15 @@
return T1_Set_MM_Blend( face, 0, NULL );
}
- /*************************************************************************/
- /* */
- /* Just a wrapper around T1_Set_MM_Design to support the different */
- /* arguments needed by the GX var distortable fonts. */
- /* */
+ /**************************************************************************
+ *
+ * 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 )
{
@@ -717,10 +790,12 @@
/* allocate blend if necessary */
error = t1_allocate_blend( face, 0, (FT_UInt)num_axis );
if ( error )
goto Exit;
+ FT_TRACE4(( " [" ));
+
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++ )
@@ -739,15 +814,17 @@
{
error = FT_THROW( Invalid_File_Format );
goto Exit;
}
+ FT_TRACE4(( " /%.*s", len, token->start ));
+
name = (FT_Byte*)blend->axis_names[n];
if ( name )
{
FT_TRACE0(( "parse_blend_axis_types:"
- " overwriting axis name `%s' with `%*.s'\n",
+ " overwriting axis name `%s' with `%.*s'\n",
name, len, token->start ));
FT_FREE( name );
}
if ( FT_ALLOC( blend->axis_names[n], len + 1 ) )
@@ -756,10 +833,12 @@
name = (FT_Byte*)blend->axis_names[n];
FT_MEM_COPY( name, token->start, len );
name[len] = '\0';
}
+ FT_TRACE4(( "]\n" ));
+
Exit:
loader->parser.root.error = error;
}
@@ -800,10 +879,12 @@
blend = face->blend;
num_axis = 0; /* make compiler happy */
+ FT_TRACE4(( " [" ));
+
for ( n = 0; n < num_designs; n++ )
{
T1_TokenRec axis_tokens[T1_MAX_MM_AXIS];
T1_Token token;
FT_Int axis, n_axis;
@@ -840,21 +921,26 @@
error = FT_THROW( Invalid_File_Format );
goto Exit;
}
/* now read each axis token into the design position */
+ FT_TRACE4(( " [" )) ;
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 );
+ FT_TRACE4(( " %f", (double)blend->design_pos[n][axis] / 65536 ));
}
+ FT_TRACE4(( "]" )) ;
}
+ FT_TRACE4(( "]\n" ));
+
loader->parser.root.cursor = old_cursor;
loader->parser.root.limit = old_limit;
}
Exit:
@@ -897,10 +983,12 @@
error = t1_allocate_blend( face, 0, (FT_UInt)num_axis );
if ( error )
goto Exit;
blend = face->blend;
+ FT_TRACE4(( " [" ));
+
/* now read each axis design map */
for ( n = 0; n < num_axis; n++ )
{
PS_DesignMap map = blend->design_map + n;
T1_Token axis_token;
@@ -913,10 +1001,12 @@
parser->root.cursor = axis_token->start;
parser->root.limit = axis_token->limit;
T1_ToTokenArray( parser, point_tokens,
T1_MAX_MM_MAP_POINTS, &num_points );
+ FT_TRACE4(( " [" ));
+
if ( num_points <= 0 || num_points > T1_MAX_MM_MAP_POINTS )
{
FT_ERROR(( "parse_blend_design_map: incorrect table\n" ));
error = FT_THROW( Invalid_File_Format );
goto Exit;
@@ -946,13 +1036,21 @@
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 );
+
+ FT_TRACE4(( " [%d %f]",
+ map->design_points[p],
+ (double)map->blend_points[p] / 65536 ));
}
+
+ FT_TRACE4(( "]" ));
}
+ FT_TRACE4(( "]\n" ));
+
parser->root.cursor = old_cursor;
parser->root.limit = old_limit;
Exit:
parser->root.error = error;
@@ -1008,20 +1106,26 @@
}
old_cursor = parser->root.cursor;
old_limit = parser->root.limit;
+ FT_TRACE4(( "[" ));
+
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 );
+
+ FT_TRACE4(( " %f", (double)blend->weight_vector[n] / 65536 ));
}
+ FT_TRACE4(( "]\n" ));
+
parser->root.cursor = old_cursor;
parser->root.limit = old_limit;
Exit:
parser->root.error = error;
@@ -1034,10 +1138,24 @@
parse_buildchar( T1_Face face,
T1_Loader loader )
{
face->len_buildchar = (FT_UInt)T1_ToFixedArray( &loader->parser,
0, NULL, 0 );
+
+#ifdef FT_DEBUG_LEVEL_TRACE
+ {
+ FT_UInt i;
+
+
+ FT_TRACE4(( " [" ));
+ for ( i = 0; i < face->len_buildchar; i++ )
+ FT_TRACE4(( " 0" ));
+
+ FT_TRACE4(( "]\n" ));
+ }
+#endif
+
return;
}
#endif /* !T1_CONFIG_OPTION_NO_MM_SUPPORT */
@@ -1069,10 +1187,12 @@
blend = NULL;
/* if the keyword has a dedicated callback, call it */
if ( field->type == T1_FIELD_TYPE_CALLBACK )
{
+ FT_TRACE4(( " %s", field->ident ));
+
field->reader( (FT_Face)face, loader );
error = loader->parser.root.error;
goto Exit;
}
@@ -1146,10 +1266,12 @@
dummy_object = &face->type1;
objects = &dummy_object;
max_objects = 0;
}
+ FT_TRACE4(( " %s", field->ident ));
+
if ( *objects )
{
if ( field->type == T1_FIELD_TYPE_INTEGER_ARRAY ||
field->type == T1_FIELD_TYPE_FIXED_ARRAY )
error = T1_Load_Field_Table( &loader->parser, field,
@@ -1165,10 +1287,12 @@
" (probably due to missing keywords)\n",
field->ident ));
error = FT_Err_Ok;
}
+ FT_TRACE4(( "\n" ));
+
Exit:
return error;
}
@@ -1177,10 +1301,12 @@
T1_Loader loader )
{
FT_UNUSED( face );
loader->keywords_encountered |= T1_PRIVATE;
+
+ FT_TRACE4(( "\n" ));
}
/* return 1 in case of success */
@@ -1256,10 +1382,18 @@
{
parser->root.error = FT_THROW( Invalid_File_Format );
return;
}
+ FT_TRACE4(( " [%f %f %f %f %f %f]\n",
+ (double)temp[0] / 65536 / 1000,
+ (double)temp[1] / 65536 / 1000,
+ (double)temp[2] / 65536 / 1000,
+ (double)temp[3] / 65536 / 1000,
+ (double)temp[4] / 65536 / 1000,
+ (double)temp[5] / 65536 / 1000 ));
+
temp_scale = FT_ABS( temp[3] );
if ( temp_scale == 0 )
{
FT_ERROR(( "t1_parse_font_matrix: invalid font matrix\n" ));
@@ -1278,16 +1412,22 @@
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];
+ if ( !FT_Matrix_Check( matrix ) )
+ {
+ FT_ERROR(( "t1_parse_font_matrix: invalid font matrix\n" ));
+ parser->root.error = FT_THROW( Invalid_File_Format );
+ return;
+ }
+
/* note that the offsets must be expressed in integer font units */
offset->x = temp[4] >> 16;
offset->y = temp[5] >> 16;
}
@@ -1492,32 +1632,53 @@
}
T1_Skip_Spaces( parser );
}
+#ifdef FT_DEBUG_LEVEL_TRACE
+ FT_TRACE4(( " [" ));
+
+ /* XXX show encoding vector */
+ FT_TRACE4(( "..." ));
+
+ FT_TRACE4(( "]\n" ));
+#endif
+
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;
+ FT_TRACE4(( " StandardEncoding\n" ));
+ }
else if ( cur + 15 < limit &&
ft_strncmp( (const char*)cur, "ExpertEncoding", 14 ) == 0 )
+ {
face->type1.encoding_type = T1_ENCODING_TYPE_EXPERT;
+ FT_TRACE4(( " ExpertEncoding\n" ));
+ }
else if ( cur + 18 < limit &&
ft_strncmp( (const char*)cur, "ISOLatin1Encoding", 17 ) == 0 )
+ {
face->type1.encoding_type = T1_ENCODING_TYPE_ISOLATIN1;
+ FT_TRACE4(( " ISOLatin1Encoding\n" ));
+ }
else
+ {
parser->root.error = FT_ERR( Ignore );
+ FT_TRACE4(( "<unknown>\n" ));
+ }
}
}
static void
@@ -1694,10 +1855,19 @@
}
if ( !loader->num_subrs )
loader->num_subrs = num_subrs;
+#ifdef FT_DEBUG_LEVEL_TRACE
+ FT_TRACE4(( " <" ));
+
+ /* XXX show subrs? */
+ FT_TRACE4(( "%d elements", num_subrs ));
+
+ FT_TRACE4(( ">\n" ));
+#endif
+
return;
Fail:
parser->root.error = error;
}
@@ -2015,23 +2185,32 @@
/* we added a glyph. */
loader->num_glyphs += 1;
}
+#ifdef FT_DEBUG_LEVEL_TRACE
+ FT_TRACE4(( " <" ));
+
+ /* XXX show charstrings? */
+ FT_TRACE4(( "%d elements", loader->num_glyphs ));
+
+ FT_TRACE4(( ">\n" ));
+#endif
+
return;
Fail:
parser->root.error = error;
}
- /*************************************************************************/
- /* */
- /* Define the token field static variables. This is a set of */
- /* T1_FieldRec variables. */
- /* */
- /*************************************************************************/
+ /**************************************************************************
+ *
+ * Define the token field static variables. This is a set of
+ * T1_FieldRec variables.
+ *
+ */
static
const T1_FieldRec t1_keywords[] =
{
@@ -2214,10 +2393,11 @@
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 ));
@@ -2328,29 +2508,41 @@
face->root.memory,
psaux );
if ( error )
goto Exit;
+ FT_TRACE4(( " top dictionary:\n" ));
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;
+ FT_TRACE4(( " private dictionary:\n" ));
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
+ /* we don't support Multiple Master fonts with intermediate designs; */
+ /* this implies that `num_designs' must be equal to `2^^num_axis' */
+ if ( face->blend &&
+ face->blend->num_designs != ( 1U << face->blend->num_axis ) )
+ {
+ FT_ERROR(( "T1_Open_Face:"
+ " number-of-designs != 2 ^^ number-of-axes\n" ));
+ T1_Done_Blend( face );
+ }
+
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 */
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