[1.1.X] Fixed #11944 -- Improved exception handling for the filesizeformat filter. Thanks to rfk for the report and patch.

Backport of r12426 from trunk.

git-svn-id: http://code.djangoproject.com/svn/django/branches/releases/1.1.X@12428 bcc190cf-cafb-0310-a4f2-bffc1f526a37

django/template/defaultfilters.py

@@ -792,7 +792,7 @@ def filesizeformat(bytes):
     """
     try:
         bytes = float(bytes)
-    except TypeError:
+    except (TypeError,ValueError,UnicodeDecodeError):
         return u"0 bytes"
 
     if bytes < 1024:

tests/regressiontests/defaultfilters/tests.py

@@ -476,6 +476,15 @@ u'1024.0 MB'
 >>> filesizeformat(1024*1024*1024)
 u'1.0 GB'
 
+>>> filesizeformat(complex(1,-1))
+u'0 bytes'
+
+>>> filesizeformat("")
+u'0 bytes'
+
+>>> filesizeformat(u"\N{GREEK SMALL LETTER ALPHA}")
+u'0 bytes'
+
 >>> pluralize(1)
 u''