[Devel] type 1 font with empty /Subrs []

[Dirck Blaskey]

Hi,

Here's a very tiny patch for Type 1 fonts.
I work on a PDF/Postscript interpreter product ( http://www.lib-sys.com )
that uses FreeType.  Part of the package is a small set of the
standard Type 1 fonts licensed to be included in the product, 
but FreeType has some minor problems loading them.

The initial problem, the /Subrs array in the Type 1 fonts is
present, but empty (using  [] ) which makes the parser choke.

There was a second problem; FreeType Type 1 doesn't support 
the Symbol encoding for the Symbol font.  The fix for 2.0.9 is 
straightforward, but the fix for the 2.1.x series isn't.  
So far, I haven't pursued it further, since we're still using 2.0.9.

Here's the cvs diff for the first patch:

Index: t1load.c
===================================================================
RCS file: /cvs/freetype/freetype2/src/type1/t1load.c,v
retrieving revision 1.72
diff -u -r1.72 t1load.c
--- t1load.c 2002/09/17 12:39:19 1.72
+++ t1load.c 2002/11/23 07:24:00
@@ -1133,6 +1133,11 @@
       /*  with synthetic fonts, it's possible we get here twice  */
       return;
 
+    if ( parser->root.cursor[0]=='[' && 
+         parser->root.cursor[1]==']' )
+      /* empty array */
+      return;
+    
     loader->num_subrs = (FT_Int)T1_ToInt( parser );
     if ( parser->root.error )
       return;