def read_events(self, url):
"""
Read events from the given events RSS feed, specified by 'url', creating
new Wiki pages where appropriate.
"""
request = self.request
request.user.may = IAmRoot()
category_pagenames = self.options.categories.split()
# Locate the template for events.
template_page = PageEditor(request, self.options.template)
if not template_page.exists():
print "Template %r cannot be found. Not importing any events!" % self.options.template
return
# Process the feed.
feed = urllib.urlopen(url)
try:
nodes = xml.dom.pulldom.parse(feed)
event_details = {}
in_item = 0
# Read the nodes from the feed.
for node_type, value in nodes:
if node_type == xml.dom.pulldom.START_ELEMENT:
if value.nodeName == "item":
in_item = 1
# Get the value of the important fields.
elif in_item and value.nodeName in self.FIELDS:
nodes.expandNode(value)
event_details[value.nodeName] = self.text(value)
# Where all fields have been read, make a new page.
if reduce(lambda x, y: x and event_details.has_key(y), self.FIELDS, 1):
# Define the page.
title = event_details["title"]
# Use any parent page information.
full_title = EventAggregatorSupport.getFullPageName(self.options.parent, title)
# Find the start and end dates.
dates = EventAggregatorSupport.getDateStrings(title)
# Require one or two dates.
if dates and 1 <= len(dates) <= 2:
# Deduce the end date.
if len(dates) == 2:
start_date, end_date = dates
elif len(dates) == 1:
start_date = end_date = dates[0]
# Load the new page and replace the event details in the body.
new_page = PageEditor(request, full_title,
uid_override=self.options.author)
# Delete the page if requested.
if new_page.exists() and self.options.delete:
try:
new_page.deletePage()
except new_page.AccessDenied:
print "Page %r has not been deleted." % full_title
# Complete the new page.
elif not new_page.exists() or self.options.overwrite:
event_details["summary"] = title
event_details["start"] = start_date
event_details["end"] = end_date
try:
EventAggregatorSupport.fillEventPageFromTemplate(
template_page, new_page, event_details,
category_pagenames)
except new_page.Unchanged:
print "Page %r is not changed." % full_title
else:
print "Not overwriting page %r." % full_title
else:
print "Could not deduce dates from %r." % title
event_details = {}
elif node_type == xml.dom.pulldom.END_ELEMENT:
if value.nodeName == "item":
in_item = 0
finally:
feed.close()
