tr = cs.HTMLTranslator()

def convert(x):

return tr.selector_to_xpath( x )

# convert e.g. a:hover to a::hover (css3)

def S(m):

if m.group(0) == ':': return '::'

else: return m.group(0)

for s in sel:

s = re.sub(':+', S, s)

try:

sel_list = cs.parse(s)

for x in map(convert, sel_list):

if doc.xpath(x):

return True

except cs.parser.SelectorSyntaxError as e:

# probably unsupported @media selector

# may still be matched by subrules' selectors

# so just skip this selector

pass

except Exception as e:

print(e, "; sel='{}'".format(s), file=sys.stderr)

if not rule.subrules and check_selector_list(rule.sel, doc):

return True

rejected = 0

for r in rule.subrules:

if not check_rule(r, doc):

rejected += 1

r.exclude()

if rejected < len(rule.subrules):

return True

if not rule.has_declarations:

print("no data left in the rule", file=sys.stderr)

return False

print(rule.sel, 'does not match (rej. {} of {}, decl={})'\

.format(rejected, len(rule.subrules),rule.has_declarations), file=sys.stderr)

if len(argv) < 3:

return 1

css = argv[1]

html = argv[2]

doc = ht.document_fromstring( open(html).read() )

css_text = open(css).read()

rules = parser().parseString(css_text)

tr = cs.HTMLTranslator()

result_rules = []

rejected_rules = []

for r in rules:

if check_rule(r, doc):

result_rules.append( r )

print( r.text(), end='' )

else:

print('rejected:', r.text(exclude=False), file=sys.stderr)

rejected_rules.append( r )

print()

print ("rules before:\t", len(rules), file=sys.stderr)

print ("rules after:\t", len(result_rules), file=sys.stderr)

#print ("rejected rules:", file=sys.stderr)

#for r in rejected_rules:

# print(r.text(exclude=False), file=sys.stderr, end='')