Add tools - unaccent

tools.py

@@ -0,0 +1,21 @@
+# encoding: utf-8
+# This file is part account_payment_gateway module for Tryton.
+# The COPYRIGHT file at the top level of this repository contains
+# the full copyright notices and license terms.
+
+import unicodedata
+
+SRC_CHARS = u"""/*+?¿!&$[]{}@#`^<>=~%|\\"""
+
+def unaccent(text):
+    if not (isinstance(text, str) or isinstance(text, unicode)):
+        return str(text)
+    if isinstance(text, str):
+        text = unicode(text, 'utf-8')
+    text = text.lower()
+    for c in xrange(len(SRC_CHARS)):
+        text = text.replace(SRC_CHARS[c], '')
+    text = text.replace(u'º', '. ')
+    text = text.replace(u'ª', '. ')
+    text = text.replace(u'  ', ' ')
+    return unicodedata.normalize('NFKD', text).encode('ASCII', 'ignore')