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+# Copyright (c) 2011, 2012 Free Software Foundation
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as
+# published by the Free Software Foundation, either version 3 of the
+# License, or (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU Affero General Public License for more details.
+
+# You should have received a copy of the GNU Affero General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+
+# This project incorporates work covered by the following copyright and permission notice:
+
+# Copyright (c) 2009, Julien Fache
+# All rights reserved.
+
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+
+# * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+# * Redistributions in binary form must reproduce the above copyright
+# notice, this list of conditions and the following disclaimer in
+# the documentation and/or other materials provided with the
+# distribution.
+# * Neither the name of the author nor the names of other
+# contributors may be used to endorse or promote products derived
+# from this software without specific prior written permission.
+
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+# STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+# OF THE POSSIBILITY OF SUCH DAMAGE.
+
+# Copyright (c) 2011, 2012 Free Software Foundation
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as
+# published by the Free Software Foundation, either version 3 of the
+# License, or (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU Affero General Public License for more details.
+
+# You should have received a copy of the GNU Affero General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+
+"""Feeds for Objectapp"""
+from urlparse import urljoin
+from BeautifulSoup import BeautifulSoup
+
+from django.contrib.auth.models import User
+from django.contrib.sites.models import Site
+from django.core.urlresolvers import reverse
+from django.shortcuts import get_object_or_404
+from django.utils.feedgenerator import Atom1Feed
+from django.utils.translation import ugettext as _
+from django.contrib.syndication.views import Feed
+from django.core.urlresolvers import NoReverseMatch
+from django.core.exceptions import ObjectDoesNotExist
+
+from tagging.models import Tag
+from tagging.models import TaggedItem
+
+from objectapp.models import Gbobject
+from objectapp.settings import COPYRIGHT
+from objectapp.settings import PROTOCOL
+from objectapp.settings import FEEDS_FORMAT
+from objectapp.settings import FEEDS_MAX_ITEMS
+from objectapp.managers import gbobjects_published
+from objectapp.views.objecttypes import get_Objecttype_or_404
+from objectapp.templatetags.objectapp_tags import get_gravatar
+
+
+class ObjectappFeed(Feed):
+ """Base Feed for Objectapp"""
+ feed_copyright = COPYRIGHT
+
+ def __init__(self):
+ self.site = Site.objects.get_current()
+ self.site_url = '%s://%s' % (PROTOCOL, self.site.domain)
+ if FEEDS_FORMAT == 'atom':
+ self.feed_type = Atom1Feed
+ self.subtitle = self.description
+
+
+class GbobjectFeed(ObjectappFeed):
+ """Base Gbobject Feed"""
+ title_template = 'feeds/gbobject_title.html'
+ description_template = 'feeds/gbobject_description.html'
+
+ def item_pubdate(self, item):
+ """Publication date of an gbobject"""
+ return item.creation_date
+
+ def item_objecttypes(self, item):
+ """Gbobject's objecttypes"""
+ return [Objecttype.title for Objecttype in item.objecttypes.all()]
+
+ def item_author_name(self, item):
+ """Returns the first author of an gbobject"""
+ if item.authors.count():
+ self.item_author = item.authors.all()[0]
+ return self.item_author.username
+
+ def item_author_email(self, item):
+ """Returns the first author's email"""
+ return self.item_author.email
+
+ def item_author_link(self, item):
+ """Returns the author's URL"""
+ try:
+ author_url = reverse('objectapp_author_detail',
+ args=[self.item_author.username])
+ return self.site_url + author_url
+ except NoReverseMatch:
+ return self.site_url
+
+ def item_enclosure_url(self, item):
+ """Returns an image for enclosure"""
+ if item.image:
+ return item.image.url
+
+ img = BeautifulSoup(item.html_content).find('img')
+ if img:
+ return urljoin(self.site_url, img['src'])
+
+ def item_enclosure_length(self, item):
+ """Hardcoded enclosure length"""
+ return '100000'
+
+ def item_enclosure_mime_type(self, item):
+ """Hardcoded enclosure mimetype"""
+ return 'image/jpeg'
+
+
+class LatestGbobjects(GbobjectFeed):
+ """Feed for the latest gbobjects"""
+
+ def link(self):
+ """URL of latest gbobjects"""
+ return reverse('objectapp_gbobject_archive_index')
+
+ def items(self):
+ """Items are published gbobjects"""
+ return Gbobject.published.all()[:FEEDS_MAX_ITEMS]
+
+ def title(self):
+ """Title of the feed"""
+ return '%s - %s' % (self.site.name, _('Latest gbobjects'))
+
+ def description(self):
+ """Description of the feed"""
+ return _('The latest gbobjects for the site %s') % self.site.name
+
+
+class ObjecttypeGbobjects(GbobjectFeed):
+ """Feed filtered by a Objecttype"""
+
+ def get_object(self, request, path):
+ """Retrieve the Objecttype by his path"""
+ return get_Objecttype_or_404(path)
+
+ def items(self, obj):
+ """Items are the published gbobjects of the Objecttype"""
+ return obj.gbobjects_published()[:FEEDS_MAX_ITEMS]
+
+ def link(self, obj):
+ """URL of the Objecttype"""
+ return obj.get_absolute_url()
+
+ def title(self, obj):
+ """Title of the feed"""
+ return _('Gbobjects for the Objecttype %s') % obj.title
+
+ def description(self, obj):
+ """Description of the feed"""
+ return _('The latest gbobjects for the Objecttype %s') % obj.title
+
+
+class AuthorGbobjects(GbobjectFeed):
+ """Feed filtered by an author"""
+
+ def get_object(self, request, username):
+ """Retrieve the author by his username"""
+ return get_object_or_404(User, username=username)
+
+ def items(self, obj):
+ """Items are the published gbobjects of the author"""
+ return gbobjects_published(obj.gbobjects)[:FEEDS_MAX_ITEMS]
+
+ def link(self, obj):
+ """URL of the author"""
+ return reverse('objectapp_author_detail', args=[obj.username])
+
+ def title(self, obj):
+ """Title of the feed"""
+ return _('Gbobjects for author %s') % obj.username
+
+ def description(self, obj):
+ """Description of the feed"""
+ return _('The latest gbobjects by %s') % obj.username
+
+
+class TagGbobjects(GbobjectFeed):
+ """Feed filtered by a tag"""
+
+ def get_object(self, request, slug):
+ """Retrieve the tag by his name"""
+ return get_object_or_404(Tag, name=slug)
+
+ def items(self, obj):
+ """Items are the published gbobjects of the tag"""
+ return TaggedItem.objects.get_by_model(
+ Gbobject.published.all(), obj)[:FEEDS_MAX_ITEMS]
+
+ def link(self, obj):
+ """URL of the tag"""
+ return reverse('objectapp_tag_detail', args=[obj.name])
+
+ def title(self, obj):
+ """Title of the feed"""
+ return _('Gbobjects for the tag %s') % obj.name
+
+ def description(self, obj):
+ """Description of the feed"""
+ return _('The latest gbobjects for the tag %s') % obj.name
+
+
+class SearchGbobjects(GbobjectFeed):
+ """Feed filtered by a search pattern"""
+
+ def get_object(self, request):
+ """The GET parameter 'pattern' is the object"""
+ pattern = request.GET.get('pattern', '')
+ if len(pattern) < 3:
+ raise ObjectDoesNotExist
+ return pattern
+
+ def items(self, obj):
+ """Items are the published gbobjects founds"""
+ return Gbobject.published.search(obj)[:FEEDS_MAX_ITEMS]
+
+ def link(self, obj):
+ """URL of the search request"""
+ return '%s?pattern=%s' % (reverse('objectapp_gbobject_search'), obj)
+
+ def title(self, obj):
+ """Title of the feed"""
+ return _("Results of the search for '%s'") % obj
+
+ def description(self, obj):
+ """Description of the feed"""
+ return _("The gbobjects containing the pattern '%s'") % obj
+
+
+class GbobjectDiscussions(ObjectappFeed):
+ """Feed for discussions in an gbobject"""
+ title_template = 'feeds/discussion_title.html'
+ description_template = 'feeds/discussion_description.html'
+
+ def get_object(self, request, year, month, day, slug):
+ """Retrieve the discussions by gbobject's slug"""
+ return get_object_or_404(Gbobject.published, slug=slug,
+ creation_date__year=year,
+ creation_date__month=month,
+ creation_date__day=day)
+
+ def items(self, obj):
+ """Items are the discussions on the gbobject"""
+ return obj.discussions[:FEEDS_MAX_ITEMS]
+
+ def item_pubdate(self, item):
+ """Publication date of a discussion"""
+ return item.submit_date
+
+ def item_link(self, item):
+ """URL of the discussion"""
+ return item.get_absolute_url()
+
+ def link(self, obj):
+ """URL of the gbobject"""
+ return obj.get_absolute_url()
+
+ def item_author_name(self, item):
+ """Author of the discussion"""
+ return item.userinfo['name']
+
+ def item_author_email(self, item):
+ """Author's email of the discussion"""
+ return item.userinfo['email']
+
+ def item_author_link(self, item):
+ """Author's URL of the discussion"""
+ return item.userinfo['url']
+
+ def title(self, obj):
+ """Title of the feed"""
+ return _('Discussions on %s') % obj.title
+
+ def description(self, obj):
+ """Description of the feed"""
+ return _('The latest discussions for the gbobject %s') % obj.title
+
+
+class GbobjectComments(GbobjectDiscussions):
+ """Feed for comments in an gbobject"""
+ title_template = 'feeds/comment_title.html'
+ description_template = 'feeds/comment_description.html'
+
+ def items(self, obj):
+ """Items are the comments on the gbobject"""
+ return obj.comments[:FEEDS_MAX_ITEMS]
+
+ def item_link(self, item):
+ """URL of the comment"""
+ return item.get_absolute_url('#comment_%(id)s')
+
+ def title(self, obj):
+ """Title of the feed"""
+ return _('Comments on %s') % obj.title
+
+ def description(self, obj):
+ """Description of the feed"""
+ return _('The latest comments for the gbobject %s') % obj.title
+
+ def item_enclosure_url(self, item):
+ """Returns a gravatar image for enclosure"""
+ return get_gravatar(item.userinfo['email'])
+
+ def item_enclosure_length(self, item):
+ """Hardcoded enclosure length"""
+ return '100000'
+
+ def item_enclosure_mime_type(self, item):
+ """Hardcoded enclosure mimetype"""
+ return 'image/jpeg'
+
+
+class GbobjectPingbacks(GbobjectDiscussions):
+ """Feed for pingbacks in an gbobject"""
+ title_template = 'feeds/pingback_title.html'
+ description_template = 'feeds/pingback_description.html'
+
+ def items(self, obj):
+ """Items are the pingbacks on the gbobject"""
+ return obj.pingbacks[:FEEDS_MAX_ITEMS]
+
+ def item_link(self, item):
+ """URL of the pingback"""
+ return item.get_absolute_url('#pingback_%(id)s')
+
+ def title(self, obj):
+ """Title of the feed"""
+ return _('Pingbacks on %s') % obj.title
+
+ def description(self, obj):
+ """Description of the feed"""
+ return _('The latest pingbacks for the gbobject %s') % obj.title
+
+
+class GbobjectTrackbacks(GbobjectDiscussions):
+ """Feed for trackbacks in an gbobject"""
+ title_template = 'feeds/trackback_title.html'
+ description_template = 'feeds/trackback_description.html'
+
+ def items(self, obj):
+ """Items are the trackbacks on the gbobject"""
+ return obj.trackbacks[:FEEDS_MAX_ITEMS]
+
+ def item_link(self, item):
+ """URL of the trackback"""
+ return item.get_absolute_url('#trackback_%(id)s')
+
+ def title(self, obj):
+ """Title of the feed"""
+ return _('Trackbacks on %s') % obj.title
+
+ def description(self, obj):
+ """Description of the feed"""
+ return _('The latest trackbacks for the gbobject %s') % obj.title