From 3ac697f8e02b13030de44009f6f4c0f9de91fe0c Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Mon, 24 Oct 2011 22:05:45 +0530
Subject: [PATCH] ODT Input: CSS rationalization should not fail with non ascii
 class names

---
 src/calibre/ebooks/odt/input.py | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/calibre/ebooks/odt/input.py b/src/calibre/ebooks/odt/input.py
index 927c43f66d..4e6bf5a4e2 100644
--- a/src/calibre/ebooks/odt/input.py
+++ b/src/calibre/ebooks/odt/input.py
@@ -74,7 +74,10 @@ class Extract(ODF2XHTML):
             style = style[0]
             css = style.text
             if css:
-                style.text, sel_map = self.do_filter_css(css)
+                css, sel_map = self.do_filter_css(css)
+                if not isinstance(css, unicode):
+                    css = css.decode('utf-8', 'ignore')
+                style.text = css
                 for x in root.xpath('//*[@class]'):
                     extra = []
                     orig = x.get('class')