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-rw-r--r--Build/source/libs/freetype2/freetype-src/src/type1/t1load.c67
1 files changed, 52 insertions, 15 deletions
diff --git a/Build/source/libs/freetype2/freetype-src/src/type1/t1load.c b/Build/source/libs/freetype2/freetype-src/src/type1/t1load.c
index 4ce1e35aeb8..a53037ca5b3 100644
--- a/Build/source/libs/freetype2/freetype-src/src/type1/t1load.c
+++ b/Build/source/libs/freetype2/freetype-src/src/type1/t1load.c
@@ -4,7 +4,7 @@
/* */
/* Type 1 font loader (body). */
/* */
-/* Copyright 1996-2015 by */
+/* Copyright 1996-2016 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"
@@ -1404,6 +1405,8 @@
FT_Memory memory = parser->root.memory;
FT_Error error;
FT_Int num_subrs;
+ FT_UInt count;
+ FT_Hash hash = NULL;
PSAux_Service psaux = (PSAux_Service)face->psaux;
@@ -1430,13 +1433,41 @@
}
/* we certainly need more than 8 bytes per subroutine */
- if ( num_subrs > ( parser->root.limit - parser->root.cursor ) >> 3 )
+ 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 ( !hash )
+ {
+ if ( FT_NEW( hash ) )
+ goto Fail;
+
+ loader->subrs_hash = hash;
+
+ error = ft_hash_num_init( hash, memory );
+ if ( error )
+ goto Fail;
+ }
}
/* position the parser right before the `dup' of the first subr */
@@ -1458,7 +1489,7 @@
/* */
/* `index' + binary data */
/* */
- for (;;)
+ for ( count = 0; ; count++ )
{
FT_Long idx;
FT_ULong size;
@@ -1494,6 +1525,14 @@
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 ( hash )
+ {
+ ft_hash_num_insert( idx, count, hash, memory );
+ idx = count;
+ }
+
/* with synthetic fonts it is possible we get here twice */
if ( loader->num_subrs )
continue;
@@ -2105,17 +2144,6 @@
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;
}
@@ -2123,6 +2151,7 @@
t1_done_loader( T1_Loader loader )
{
T1_Parser parser = &loader->parser;
+ FT_Memory memory = parser->root.memory;
/* finalize tables */
@@ -2132,6 +2161,10 @@
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 );
}
@@ -2248,11 +2281,15 @@
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 )