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import re
import urllib
from HTMLParser import HTMLParser, HTMLParseError
from django.conf import settings
from django.core.management.base import BaseCommand, CommandError
from django.utils.timezone import now
from releng.models import Iso
class IsoListParser(HTMLParser):
def __init__(self):
HTMLParser.__init__(self)
self.hyperlinks = []
self.url_re = re.compile('(?!\.{2})/$')
def handle_starttag(self, tag, attrs):
if tag == 'a':
for name, value in attrs:
if name == "href":
if value != '../' and self.url_re.search(value) is not None:
self.hyperlinks.append(value[:-1])
def parse(self, url):
try:
remote_file = urllib.urlopen(url)
data = remote_file.read()
remote_file.close()
self.feed(data)
self.close()
return self.hyperlinks
except HTMLParseError:
raise CommandError('Couldn\'t parse "%s"' % url)
class Command(BaseCommand):
help = 'Gets new ISOs from %s' % settings.ISO_LIST_URL
def handle(self, *args, **options):
parser = IsoListParser()
isonames = Iso.objects.values_list('name', flat=True)
active_isos = parser.parse(settings.ISO_LIST_URL)
for iso in active_isos:
# create any names that don't already exist
if iso not in isonames:
new = Iso(name=iso, active=True)
new.save()
# update those that do if they were marked inactive
else:
existing = Iso.objects.get(name=iso)
if not existing.active:
existing.active = True
existing.removed = None
existing.save(update_fields=('active', 'removed'))
# and then mark all other names as no longer active
Iso.objects.filter(active=True).exclude(name__in=active_isos).update(
active=False, removed=now())
# vim: set ts=4 sw=4 et:
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