--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/extras/examples/dumbfeedparser.py	Tue Feb 16 10:07:05 2010 +0530
@@ -0,0 +1,98 @@
+# A simple and limited RSS feed parser used in the RSS reader example.
+
+# Copyright (c) 2005 Nokia Corporation
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+
+import re
+import urllib
+
+def parse(url):
+    return parse_feed(urllib.urlopen(url).read())
+
+def parse_feed(text):
+    feed={}
+    items=[]
+    currentitem=[{}]
+
+    def clean_entities(text): return re.sub('&[#0-9a-z]+;','?',text)
+    def clean_lf(text): return re.sub('[\n\t\r]',' ',text)
+
+    def end_a(tag,content): write('LINK(%s)'%gettext())
+    def start_item(tag,content):
+        gettext()
+        write(content)
+        currentitem[0]={}
+    def end_item(tag,content):
+        items.append(currentitem[0])
+        currentitem[0]={}
+    def end_link(tag,content):
+        if within('item'):
+            currentitem[0]['link']=gettext()
+    def end_description(tag,content):
+        if within('item'):
+            currentitem[0]['summary']=clean_entities(gettext())
+    def end_title(tag,content):
+        text=clean_lf(gettext()).strip()
+        if within('item'):
+            currentitem[0]['title']=text
+        elif parentis('channel'):
+            feed['title']=text
+            
+    tagre=re.compile('([^ \n\t]+)(.*)>(.*)',re.S)
+    tagpath=[]
+    textbuffer=[[]]
+    assumed_encoding='latin-1'
+    lines=text.split('<')
+    def start_default(tag,content): write(content)
+    def end_default(tag,content): pass
+    def tag_default(tag,content): pass
+    def write(text): textbuffer[0].append(text)
+    def gettext():
+        text=''.join(textbuffer[0])
+        textbuffer[0]=[]
+        return unicode(text,assumed_encoding)
+    def current_tag(): return tagpath[-1]
+    def current_path(): return '/'.join(tagpath)
+    def within(tag): return tag in tagpath
+    def parentis(tag): return current_tag()==tag
+    for k in lines:
+        m=tagre.match(k)
+        if m:
+            (tag,attributes,content)=m.groups()
+            if tag.startswith('?'):
+                continue
+            if tag.startswith('/'):
+                tagname=tag[1:]
+                handler='end_%s'%tagname
+                generic_handler=end_default
+                if current_tag() != tagname:
+                    pass # Unbalanced tags, just ignore for now.
+                del tagpath[-1]
+            elif tag.endswith('/'):
+                tagname=tag[0:-1]
+                handler='tag_%s'%tagname
+                generic_handler=tag_default
+            else:
+                tagname=tag
+                handler='start_%s'%tagname
+                generic_handler=start_default
+                tagpath.append(tagname)
+            locals().get(handler,generic_handler)(tagname,content)
+        else:
+            pass # Malformed line, just ignore.
+        
+    feed['entries']=items
+    return feed
+