feeds: clean up other stylesheets before putting ours

pictuga 2020-05-26 19:26:36 +02:00
parent ad3ba9de1a
commit 2fe3e0b8ee
1 changed files with 20 additions and 2 deletions

View File

@ -718,11 +718,29 @@ class Item(Uniq):
class FeedXML(Feed, ParserXML):
itemsClass = 'ItemXML'
def root_siblings(self):
out = []
current = self.root.getprevious()
while current is not None:
current = current.getprevious()
return out
def tostring(self, encoding='unicode', **k):
# override needed due to "getroottree" inclusion
# and to add stylesheet
if self.root.getprevious() is None:
self.root.addprevious(etree.PI('xml-stylesheet', 'type="text/xsl" href="/sheet.xsl"'))
stylesheets = [x for x in self.root_siblings() if isinstance(x, etree.PIBase) and x.target == 'xml-stylesheet']
if len(stylesheets):
# remove all stylesheets present (be that ours or others')
for stylesheet in stylesheets:
self.root.append(stylesheet) # needed as we can't delete root siblings https://stackoverflow.com/a/60232366
self.root.addprevious(etree.PI('xml-stylesheet', 'type="text/xsl" href="/sheet.xsl"'))
return etree.tostring(self.root.getroottree(), encoding=encoding, method='xml', **k)