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from xml.etree import ElementTree
import cssselect2
import tinycss2
# Parse CSS and add rules to the matcher
matcher = cssselect2.Matcher()
rules = tinycss2.parse_stylesheet('''
body { font-size: 2em }
body p { background: red }
p { color: blue }
''', skip_whitespace=True)
for rule in rules:
selectors = cssselect2.compile_selector_list(rule.prelude)
selector_string = tinycss2.serialize(rule.prelude)
content_string = tinycss2.serialize(rule.content)
payload = (selector_string, content_string)
for selector in selectors:
matcher.add_selector(selector, payload)
# Parse HTML and find CSS rules applying to each tag
html_tree = ElementTree.fromstring('''
<html>
<body>
<p>Test</p>
</body>
</html>
''')
wrapper = cssselect2.ElementWrapper.from_html_root(html_tree)
for element in wrapper.iter_subtree():
tag = element.etree_element.tag.split('}')[-1]
print('Found tag "{}" in HTML'.format(tag))
matches = matcher.match(element)
if matches:
for match in matches:
specificity, order, pseudo, payload = match
selector_string, content_string = payload
print('Matching selector "{}" ({})'.format(
selector_string, content_string))
else:
print('No rule matching this tag')
print()
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