From a7a82a6947372745d3ce44f8fed2e7046942ca4f Mon Sep 17 00:00:00 2001
From: Benny Malengier <benny.malengier@gramps-project.org>
Date: Sat, 5 Jan 2013 11:34:48 +0000
Subject: [PATCH] 6256: Can't create graph reports

svn: r20996
---
 gramps/gen/plug/docgen/graphdoc.py | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/gramps/gen/plug/docgen/graphdoc.py b/gramps/gen/plug/docgen/graphdoc.py
index bcf616a92..3785f72b5 100644
--- a/gramps/gen/plug/docgen/graphdoc.py
+++ b/gramps/gen/plug/docgen/graphdoc.py
@@ -37,7 +37,7 @@ import sys
 if sys.version_info[0] < 3:
     from StringIO import StringIO
 else:
-    from io import StringIO
+    from io import BytesIO
 import tempfile
 from subprocess import Popen, PIPE
 import sys
@@ -369,7 +369,10 @@ class GVDocBase(BaseDoc, GVDoc):
         BaseDoc.__init__(self, None, paper_style)
 
         self._filename      = None
-        self._dot           = StringIO()
+        if sys.version_info[0] < 3:
+            self._dot = StringIO()
+        else:
+            self._dot = BytesIO()
         self._paper         = paper_style
         
         get_option_by_name = options.menu.get_option_by_name
@@ -873,7 +876,10 @@ class GVPdfGvDoc(GVDocBase):
 
         # Create a temporary dot file
         (handle, tmp_dot) = tempfile.mkstemp(".gv" )
-        dotfile = os.fdopen(handle,"w")
+        if sys.version_info[0] < 3:
+            dotfile = os.fdopen(handle, "w")
+        else:
+            dotfile = os.fdopen(handle, "wb")
         dotfile.write(self._dot.getvalue())
         dotfile.close()
         # Covert filename to str using file system encoding.