--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/XSLTransform.py	Fri Aug 09 12:07:33 2019 +0200
@@ -0,0 +1,25 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+# This file is part of Beremiz.
+# See COPYING file for copyrights details.
+
+from __future__ import absolute_import
+from lxml import etree
+
+class XSLTransform(object):
+    """ a class to handle XSLT queries on project and libs """
+    def __init__(self, xsltpath, xsltext):
+
+        # parse and compile. "beremiz" arbitrary namespace for extensions
+        self.xslt = etree.XSLT(
+            etree.parse(
+                xsltpath,
+                etree.XMLParser()),
+            extensions={("beremiz", name): call for name, call in xsltext})
+
+    def transform(self, root, **kwargs):
+        res = self.xslt(root, **{k: etree.XSLT.strparam(v) for k, v in kwargs.iteritems()})
+        # print(self.xslt.error_log)
+        return res
+
+