X-Git-Url: https://git.mdrn.pl/wolnelektury.git/blobdiff_plain/6280673f35e13e75e81c5b7821bd2a44a1831eab..357027375ff8867f42ca34bcbfb5a78b5b185fc3:/src/funding/utils.py

diff --git a/src/funding/utils.py b/src/funding/utils.py
new file mode 100644
index 000000000..c16c9d93d
--- /dev/null
+++ b/src/funding/utils.py
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+# -*- coding: utf-8 -*-
+# This file is part of Wolnelektury, licensed under GNU Affero GPLv3 or later.
+# Copyright © Fundacja Nowoczesna Polska. See NOTICE for more information.
+#
+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))