New bot class and XML based working

atom.py

@@ -0,0 +1,53 @@
+#!/usr/bin/python3
+# coding=utf-8
+
+import time
+from xml.dom.minidom import parse
+from xml.dom.minidom import parseString
+from xml.dom.minidom import getDOMImplementation
+
+class AtomEntry:
+  def __init__ (self, node):
+    self.id = node.getElementsByTagName("id")[0].firstChild.nodeValue
+    self.title = node.getElementsByTagName("title")[0].firstChild.nodeValue
+    self.updated = time.strptime(node.getElementsByTagName("updated")[0].firstChild.nodeValue[:19], "%Y-%m-%dT%H:%M:%S")
+    self.summary = node.getElementsByTagName("summary")[0].firstChild.nodeValue
+    self.link = node.getElementsByTagName("link")[0].getAttribute ("href")
+
+class Atom:
+  def __init__ (self, string):
+    self.feed = parseString (string).documentElement
+    self.id = self.feed.getElementsByTagName("id")[0].firstChild.nodeValue
+    self.title = self.feed.getElementsByTagName("title")[0].firstChild.nodeValue
+
+    self.updated = None
+    self.entries = dict ()
+    for item in self.feed.getElementsByTagName("entry"):
+      entry = AtomEntry (item)
+      self.entries[entry.id] = entry
+      if self.updated is None or self.updated < entry.updated:
+        self.updated = entry.updated
+
+  def diff (self, other):
+    differ = list ()
+    for k in other.entries.keys ():
+      if k not in self.entries and other.entries[k].updated >= self.updated:
+        differ.append (other.entries[k])
+    return differ
+
+
+if __name__ == "__main__":
+  content1 = ""
+  with open("rss.php", "r") as f:
+    for line in f:
+      content1 += line
+  content2 = ""
+  with open("rss.php.1", "r") as f:
+    for line in f:
+      content2 += line
+  a = Atom (content1)
+  print (a.updated)
+  b = Atom (content2)
+  print (b.updated)
+
+  diff = a.diff (b)