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Avoid re-parsing identical selectors for class names

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Kovid Goyal 2020-07-03 12:24:43 +05:30
parent 0bdabbaeef
commit 304f682808
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1 changed files with 2 additions and 0 deletions
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src/calibre/ebooks/oeb/polish/css.py
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@ -18,6 +18,7 @@ from calibre.ebooks.oeb.polish.pretty import pretty_script_or_style, pretty_xml_
from calibre.utils.icu import numeric_sort_key from calibre.utils.icu import numeric_sort_key
from css_selectors import Select, SelectorError from css_selectors import Select, SelectorError
from polyglot.builtins import iteritems, itervalues, unicode_type, filter from polyglot.builtins import iteritems, itervalues, unicode_type, filter
from polyglot.functools import lru_cache
def filter_used_rules(rules, log, select): def filter_used_rules(rules, log, select):
@ -291,6 +292,7 @@ def _classes_in_selector(selector, classes):
classes.add(cn) classes.add(cn)
@lru_cache(maxsize=4096)
def classes_in_selector(text): def classes_in_selector(text):
classes = set() classes = set()
try: try: