euscanwww: django 1.4 port

Signed-off-by: Corentin Chary <corentincj@iksaif.net>

euscanwww/api/emitters.py

@@ -0,0 +1,50 @@
+from piston.emitters import Emitter, XMLEmitter
+
+class EuscanXMLEmitter(XMLEmitter):
+    _parent = []
+    _known_parents = {
+        'vlog' : 'version',
+        'herds' : 'herd',
+        'maintainers' : 'maintainer',
+        'packaged' : 'version',
+        'upstream' : 'version',
+        'packages' : 'package',
+        'categories' : 'category'
+        }
+
+    def _push_parent(self, parent):
+        self._parent.append(parent)
+
+    def _pop_parent(self):
+        if self._parent:
+            return self._parent.pop()
+        else:
+            return None
+
+    def _current_parent(self):
+        if self._parent:
+            return self._parent[-1]
+        else:
+            return None
+
+    def _name_from_parent(self):
+        return self._known_parents.get(self._current_parent(), 'resource')
+
+    def _to_xml(self, xml, data):
+        def recurse(name, xml, item):
+            attrs = {}
+            xml.startElement(name, attrs)
+            self._push_parent(name)
+            self._to_xml(xml, item)
+            self._pop_parent()
+            xml.endElement(name)
+
+        if isinstance(data, (list, tuple)):
+            for item in data:
+                name = self._name_from_parent()
+                recurse(name, xml, item)
+        elif isinstance(data, dict):
+            for key, value in data.iteritems():
+                recurse(key, xml, value)
+        else:
+            super(EuscanXMLEmitter, self)._to_xml(xml, data)