NewsBlur-viq/vendor/feedvalidator/feed.py

126 lines
3.7 KiB
Python

"""$Id: feed.py 699 2006-09-25 02:01:18Z rubys $"""
__author__ = "Sam Ruby <http://intertwingly.net/> and Mark Pilgrim <http://diveintomark.org/>"
__version__ = "$Revision: 699 $"
__date__ = "$Date: 2006-09-25 02:01:18 +0000 (Mon, 25 Sep 2006) $"
__copyright__ = "Copyright (c) 2002 Sam Ruby and Mark Pilgrim"
from base import validatorBase
from validators import *
from logging import *
from itunes import itunes_channel
from extension import extension_feed
#
# Atom root element
#
class feed(validatorBase, extension_feed, itunes_channel):
def prevalidate(self):
self.links = []
def missingElement(self, params):
offset = [self.line - self.dispatcher.locator.getLineNumber(),
self.col - self.dispatcher.locator.getColumnNumber()]
self.log(MissingElement(params), offset)
def validate_metadata(self):
if not 'title' in self.children:
self.missingElement({"parent":self.name, "element":"title"})
if not 'id' in self.children:
self.missingElement({"parent":self.name, "element":"id"})
if not 'updated' in self.children:
self.missingElement({"parent":self.name, "element":"updated"})
# ensure that there is a link rel="self"
for link in self.links:
if link.rel=='self': break
else:
offset = [self.line - self.dispatcher.locator.getLineNumber(),
self.col - self.dispatcher.locator.getColumnNumber()]
self.log(MissingSelf({"parent":self.parent.name, "element":self.name}), offset)
# can only have one alternate per type
types={}
for link in self.links:
if not link.rel=='alternate': continue
if not link.type in types: types[link.type]={}
if link.rel in types[link.type]:
if link.hreflang in types[link.type][link.rel]:
self.log(DuplicateAtomLink({"parent":self.name, "element":"link", "type":link.type, "hreflang":link.hreflang}))
else:
types[link.type][link.rel] += [link.hreflang]
else:
types[link.type][link.rel] = [link.hreflang]
if self.itunes: itunes_channel.validate(self)
def metadata(self):
if 'entry' in self.children:
self.log(MisplacedMetadata({"parent":self.name, "element":self.child}))
def validate(self):
if not 'entry' in self.children:
self.validate_metadata()
def do_author(self):
self.metadata()
from author import author
return author()
def do_category(self):
self.metadata()
from category import category
return category()
def do_contributor(self):
self.metadata()
from author import author
return author()
def do_generator(self):
self.metadata()
from generator import generator
return generator(), nonblank(), noduplicates()
def do_id(self):
self.metadata()
return canonicaluri(), nows(), noduplicates()
def do_icon(self):
self.metadata()
return nonblank(), nows(), rfc2396(), noduplicates()
def do_link(self):
self.metadata()
from link import link
self.links += [link()]
return self.links[-1]
def do_logo(self):
self.metadata()
return nonblank(), nows(), rfc2396(), noduplicates()
def do_title(self):
self.metadata()
from content import textConstruct
return textConstruct(), noduplicates()
def do_subtitle(self):
self.metadata()
from content import textConstruct
return textConstruct(), noduplicates()
def do_rights(self):
self.metadata()
from content import textConstruct
return textConstruct(), noduplicates()
def do_updated(self):
self.metadata()
return rfc3339(), nows(), noduplicates()
def do_entry(self):
if not 'entry' in self.children:
self.validate_metadata()
from entry import entry
return entry()