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Don't crash when an at-rule is empty

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This commit is contained in:
Guillaume Ayoub 2017-08-14 14:11:57 +02:00
parent c41b55eb93
commit 2ac0481cb0
1 changed files with 6 additions and 1 deletions
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7
weasyprint/css/__init__.py
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@ -600,6 +600,10 @@ def preprocess_stylesheet(device_media_type, base_url, stylesheet_rules,
"""
for rule in stylesheet_rules:
if getattr(rule, 'content', None) is None and (
rule.type != 'at-rule' or rule.at_keyword != 'import'):
continue
if rule.type == 'qualified-rule':
declarations = list(preprocess_declarations(
base_url, tinycss2.parse_declaration_list(rule.content)))
@ -707,7 +711,8 @@ def preprocess_stylesheet(device_media_type, base_url, stylesheet_rules,
page_rules.append((rule, selector_list, declarations))
for margin_rule in content:
if margin_rule.type != 'at-rule':
if margin_rule.type != 'at-rule' or (
margin_rule.content is None):
continue
declarations = list(preprocess_declarations(
base_url,