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Diffstat (limited to 'third_party/freetype/src/type1/t1load.c')
-rw-r--r--third_party/freetype/src/type1/t1load.c175
1 files changed, 152 insertions, 23 deletions
diff --git a/third_party/freetype/src/type1/t1load.c b/third_party/freetype/src/type1/t1load.c
index dbf4eafd71..f5c661f7de 100644
--- a/third_party/freetype/src/type1/t1load.c
+++ b/third_party/freetype/src/type1/t1load.c
@@ -4,7 +4,7 @@
/* */
/* Type 1 font loader (body). */
/* */
-/* Copyright 1996-2015 by */
+/* Copyright 1996-2017 by */
/* David Turner, Robert Wilhelm, and Werner Lemberg. */
/* */
/* This file is part of the FreeType project, and may only be used, */
@@ -66,6 +66,7 @@
#include FT_MULTIPLE_MASTERS_H
#include FT_INTERNAL_TYPE1_TYPES_H
#include FT_INTERNAL_CALC_H
+#include FT_INTERNAL_HASH_H
#include "t1load.h"
#include "t1errors.h"
@@ -236,7 +237,7 @@
if ( ncv <= axismap->blend_points[0] )
return INT_TO_FIXED( axismap->design_points[0] );
- for ( j = 1; j < axismap->num_points; ++j )
+ for ( j = 1; j < axismap->num_points; j++ )
{
if ( ncv <= axismap->blend_points[j] )
return INT_TO_FIXED( axismap->design_points[j - 1] ) +
@@ -320,12 +321,12 @@
mmvar->num_axis = mmaster.num_axis;
mmvar->num_designs = mmaster.num_designs;
- mmvar->num_namedstyles = ~0U; /* Does not apply */
+ mmvar->num_namedstyles = 0; /* Not supported */
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 )
+ 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);
@@ -336,6 +337,9 @@
mmvar->axis[i].strid = ~0U; /* Does not apply */
mmvar->axis[i].tag = ~0U; /* Does not apply */
+ if ( !mmvar->axis[i].name )
+ continue;
+
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 )
@@ -350,7 +354,7 @@
axiscoords,
blend->num_axis );
- for ( i = 0; i < mmaster.num_axis; ++i )
+ for ( i = 0; i < mmaster.num_axis; i++ )
mmvar->axis[i].def = mm_axis_unmap( &blend->design_map[i],
axiscoords[i] );
}
@@ -409,6 +413,41 @@
FT_LOCAL_DEF( FT_Error )
+ T1_Get_MM_Blend( T1_Face face,
+ FT_UInt num_coords,
+ FT_Fixed* coords )
+ {
+ PS_Blend blend = face->blend;
+
+ FT_Fixed axiscoords[4];
+ FT_UInt i, nc;
+
+
+ if ( !blend )
+ return FT_THROW( Invalid_Argument );
+
+ mm_weights_unmap( blend->weight_vector,
+ axiscoords,
+ blend->num_axis );
+
+ nc = num_coords;
+ if ( num_coords > blend->num_axis )
+ {
+ FT_TRACE2(( "T1_Get_MM_Blend: only using first %d of %d coordinates\n",
+ blend->num_axis, num_coords ));
+ nc = blend->num_axis;
+ }
+
+ for ( i = 0; i < nc; i++ )
+ coords[i] = axiscoords[i];
+ for ( ; i < num_coords; i++ )
+ coords[i] = 0x8000;
+
+ return FT_Err_Ok;
+ }
+
+
+ FT_LOCAL_DEF( FT_Error )
T1_Set_MM_Design( T1_Face face,
FT_UInt num_coords,
FT_Long* coords )
@@ -500,13 +539,49 @@
if ( num_coords > T1_MAX_MM_AXIS )
num_coords = T1_MAX_MM_AXIS;
- for ( i = 0; i < num_coords; ++i )
+ for ( i = 0; i < num_coords; i++ )
lcoords[i] = FIXED_TO_INT( coords[i] );
return T1_Set_MM_Design( face, num_coords, lcoords );
}
+ FT_LOCAL_DEF( FT_Error )
+ T1_Get_Var_Design( T1_Face face,
+ FT_UInt num_coords,
+ FT_Fixed* coords )
+ {
+ PS_Blend blend = face->blend;
+
+ FT_Fixed axiscoords[4];
+ FT_UInt i, nc;
+
+
+ if ( !blend )
+ return FT_THROW( Invalid_Argument );
+
+ mm_weights_unmap( blend->weight_vector,
+ axiscoords,
+ blend->num_axis );
+
+ nc = num_coords;
+ if ( num_coords > blend->num_axis )
+ {
+ FT_TRACE2(( "T1_Get_Var_Design:"
+ " only using first %d of %d coordinates\n",
+ blend->num_axis, num_coords ));
+ nc = blend->num_axis;
+ }
+
+ for ( i = 0; i < nc; i++ )
+ coords[i] = mm_axis_unmap( &blend->design_map[i], axiscoords[i] );
+ for ( ; i < num_coords; i++ )
+ coords[i] = 0;
+
+ return FT_Err_Ok;
+ }
+
+
FT_LOCAL_DEF( void )
T1_Done_Blend( T1_Face face )
{
@@ -1401,6 +1476,7 @@
FT_Memory memory = parser->root.memory;
FT_Error error;
FT_Int num_subrs;
+ FT_UInt count;
PSAux_Service psaux = (PSAux_Service)face->psaux;
@@ -1420,6 +1496,47 @@
}
num_subrs = (FT_Int)T1_ToInt( parser );
+ if ( num_subrs < 0 )
+ {
+ parser->root.error = FT_THROW( Invalid_File_Format );
+ return;
+ }
+
+ /* we certainly need more than 8 bytes per subroutine */
+ if ( parser->root.limit >= parser->root.cursor &&
+ num_subrs > ( parser->root.limit - parser->root.cursor ) >> 3 )
+ {
+ /*
+ * There are two possibilities. Either the font contains an invalid
+ * value for `num_subrs', or we have a subsetted font where the
+ * subroutine indices are not adjusted, e.g.
+ *
+ * /Subrs 812 array
+ * dup 0 { ... } NP
+ * dup 51 { ... } NP
+ * dup 681 { ... } NP
+ * ND
+ *
+ * In both cases, we use a number hash that maps from subr indices to
+ * actual array elements.
+ */
+
+ FT_TRACE0(( "parse_subrs: adjusting number of subroutines"
+ " (from %d to %d)\n",
+ num_subrs,
+ ( parser->root.limit - parser->root.cursor ) >> 3 ));
+ num_subrs = ( parser->root.limit - parser->root.cursor ) >> 3;
+
+ if ( !loader->subrs_hash )
+ {
+ if ( FT_NEW( loader->subrs_hash ) )
+ goto Fail;
+
+ error = ft_hash_num_init( loader->subrs_hash, memory );
+ if ( error )
+ goto Fail;
+ }
+ }
/* position the parser right before the `dup' of the first subr */
T1_Skip_PS_Token( parser ); /* `array' */
@@ -1440,7 +1557,7 @@
/* */
/* `index' + binary data */
/* */
- for (;;)
+ for ( count = 0; ; count++ )
{
FT_Long idx;
FT_ULong size;
@@ -1476,6 +1593,14 @@
T1_Skip_Spaces ( parser );
}
+ /* if we use a hash, the subrs index is the key, and a running */
+ /* counter specified for `T1_Add_Table' acts as the value */
+ if ( loader->subrs_hash )
+ {
+ ft_hash_num_insert( idx, count, loader->subrs_hash, memory );
+ idx = count;
+ }
+
/* with synthetic fonts it is possible we get here twice */
if ( loader->num_subrs )
continue;
@@ -1487,7 +1612,7 @@
/* */
if ( face->type1.private_dict.lenIV >= 0 )
{
- FT_Byte* temp;
+ FT_Byte* temp = NULL;
/* some fonts define empty subr records -- this is not totally */
@@ -1691,7 +1816,7 @@
if ( face->type1.private_dict.lenIV >= 0 &&
n < num_glyphs + TABLE_EXTEND )
{
- FT_Byte* temp;
+ FT_Byte* temp = NULL;
if ( size <= (FT_ULong)face->type1.private_dict.lenIV )
@@ -1719,6 +1844,12 @@
}
}
+ if ( !n )
+ {
+ error = FT_THROW( Invalid_File_Format );
+ goto Fail;
+ }
+
loader->num_glyphs = n;
/* if /.notdef is found but does not occupy index 0, do our magic. */
@@ -2047,7 +2178,7 @@
parser->root.error = t1_load_keyword( face,
loader,
keyword );
- if ( parser->root.error != FT_Err_Ok )
+ if ( parser->root.error )
{
if ( FT_ERR_EQ( parser->root.error, Ignore ) )
parser->root.error = FT_Err_Ok;
@@ -2086,18 +2217,7 @@
{
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;
+ FT_ZERO( loader );
}
@@ -2105,6 +2225,7 @@
t1_done_loader( T1_Loader loader )
{
T1_Parser parser = &loader->parser;
+ FT_Memory memory = parser->root.memory;
/* finalize tables */
@@ -2114,6 +2235,10 @@
T1_Release_Table( &loader->swap_table );
T1_Release_Table( &loader->subrs );
+ /* finalize hash */
+ ft_hash_num_free( loader->subrs_hash, memory );
+ FT_FREE( loader->subrs_hash );
+
/* finalize parser */
T1_Finalize_Parser( parser );
}
@@ -2230,11 +2355,15 @@
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;
+ type1->subrs_hash = loader.subrs_hash;
+
+ /* prevent `t1_done_loader' from freeing the propagated data */
+ loader.subrs.init = 0;
+ loader.subrs_hash = NULL;
}
if ( !IS_INCREMENTAL )
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-07 12:07:38 +0000