+# -*- coding: utf-8
+import re
+import string
+from fnpdjango.utils.text.slughifi import char_map
+
+# PayU chokes on non-Polish diacritics.
+# Punctuation is handled correctly and escaped as needed,
+# with the notable exception of backslash.
+sane_in_payu_title = re.escape(
+ string.uppercase +
+ string.lowercase +
+ u'ąćęłńóśźżĄĆĘŁŃÓŚŹŻ' +
+ string.digits +
+ ' ' +
+ "".join(set(string.punctuation) - set('\\'))
+)
+
+def replace_char(m):
+ char = m.group()
+ return char_map.get(char, '')
+
+def sanitize_payment_title(value):
+ return re.sub('[^%s]{1}' % sane_in_payu_title, replace_char, unicode(value))