class AnchorCollector(TransformationFilter):
"""Collect text anchors to save indexes on a text object's
annotation.
"""
grok.implements(ISaveEditorFilter)
grok.provides(ISaveEditorFilter)
grok.order(50)
def prepare(self, name, text):
self.entries = ITextIndexEntries(text)
self.entries.clear()
truncate = prepare
def __call__(self, tree):
for anchor in tree.xpath('//a[@class="anchor"]'):
if 'name' in anchor.attrib and 'title' in anchor.attrib:
name = anchor.attrib['name'].strip()
title = anchor.attrib['title'].strip()
if name and title:
# Only collect entries with a name and a title
self.entries.add(name, title)
# Save back stripped values
anchor.attrib['name'] = name
anchor.attrib['title'] = title
if 'href' in anchor.attrib:
# Those should not have any href, so clean them
del anchor.attrib['href']
