Добавлена возможность обновления (создания) конкретной версии

aore/updater/xmlparser.py

@@ -0,0 +1,24 @@
+# -*- coding: utf-8 -*-
+
+from lxml import etree
+
+
+class XMLParser:
+    def __init__(self, parse_function):
+        self.parse_function = parse_function
+
+    def fast_iter(self, context, func, *args, **kwargs):
+        for event, elem in context:
+            # print event
+            func(elem, *args, **kwargs)
+            # It's safe to call clear() here because no descendants will be accessed
+            elem.clear()
+            # Also eliminate now-empty references from the root node to elem
+            for ancestor in elem.xpath('ancestor-or-self::*'):
+                while ancestor.getprevious() is not None:
+                    del ancestor.getparent()[0]
+        del context
+
+    def parse_buffer(self, data_buffer, tag_name):
+        context = etree.iterparse(data_buffer, events=('end',), tag=tag_name)
+        self.fast_iter(context, lambda x: self.parse_function(x.attrib))