Item13406: Directed graph plugin needs fixes for the unicode branch

The DirectedGraphPlugin has two errors with the unicode branch.

1. Foswiki dies with error
2. doesn't render right the images (in some cases) - probably when the antialias is on.

Patch for the "die" error:

--- /tmp/DirectedGraphPlugin.pm   2015-05-15 22:57:10.000000000 +0200
+++ ./DirectedGraphPlugin.pm   2015-05-15 23:04:05.000000000 +0200
@@ -573,7 +573,7 @@
 # as they are include in $attr.
 
     my $hashCode =
-      md5_hex( 'DOT'
+      md5_hex( map { $Foswiki::UNICODE ? Encode::encode('utf8', $_) : $_ } 'DOT'
           . $desc
           . $attr
           . $antialias

The md5_hex doesn't like wide characters, e.g. when we are unicode -> encode...

Currently not investigated deeply the second error (wrong rendering), after the above patch the DGP successfully renders most of common graphs with unicode characters in the graph <dot> scripts, only some "special" cases are problematic.

-- JozefMojzis - 17 May 2015

Commenting is disabled while not logged in