def make_feed(values):
"""Create atom:feed element from dict which follow structure:
{
'title': str,
'_id': str,
'updated': datetime,
'language': str,
'links': list, -- use :func:`opds.make_link` to create each item
'entry': list -- see :func:`make_entry` doc for structure of each item,
}
:param values: Catalog feed fields.
:type values: dict.
:returns: lxml.etree._Element.
"""
atom = ElementMaker(namespace=Namespace.ATOM,
nsmap={'atom': Namespace.ATOM})
updated = values.get('updated', datetime.now())
feed = atom.feed(
atom.id(values.get('_id', u'http://books.scielo.org/opds/')),
atom.title(values.get('title', u'SciELO Books')),
atom.updated(updated.strftime('%Y-%m-%dT%H:%M:%SZ')),
atom.author(
atom.name(u'SciELO Books'),
atom.uri(u'http://books.scielo.org'),
atom.email(u'*****@*****.**')
),
atom.link(type=ContentType.NAVIGATION,
href=u'/opds/', rel=u'start')
)
links = values.get('links', [])
for link in links:
feed.append(atom.link(type=link['type'],
href=link['href'], rel=link['rel']))
entries = values.get('entry', [])
for entry_values in entries:
feed.append(make_entry(entry_values))
return feed
def __str__(self):
"""Returns the xml text for the podcast feed itself."""
itunes_url = "http://www.itunes.com/dtds/podcast-1.0.dtd"
E = ElementMaker(nsmap={'itunes': itunes_url})
iE = ElementMaker(namespace=itunes_url, nsmap={'itunes': itunes_url})
rss = E.rss({'version': '2.0'})
channel = E.channel(E.title(self.title), E.link(self.link))
rss.append(channel)
if self.description:
channel.append(E.description(self.description))
if self.author:
channel.append(iE.author(self.author))
if self.owneremail:
owner = iE.owner(iE.email(self.owneremail))
channel.append(owner)
if self.ownername:
owner.append(iE.name(self.ownername))
if self.imageurl:
channel.append(iE.image({'href': self.imageurl}))
for i in self.item_list:
# i (iterator) vs item (lxml element) is confusing
itemurl = self.baseurl + i.shortfilename
item = E.item(E.title(i.title),
E.link(itemurl),
E.pubdate(i.pubdate),
E.enclosure({'url': itemurl,
'length': i.filesize,
'type': 'audio/mpeg'}),
iE.subtitle(i.subtitle),
iE.summary(i.summary),
iE.duration(i.duration),
)
if i.author:
item.append(iE.author(i.author))
if i.imageurl:
item.append(iE.image({'href': i.imageurl}))
channel.append(item)
return etree.tostring(rss, xml_declaration=True, encoding="UTF-8",
pretty_print=True)
