mirror of
https://github.com/l1ving/youtube-dl
synced 2024-11-20 19:22:53 +08:00
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ab49d7a9fa
commit
84c237fb8a
@ -33,6 +33,7 @@ from youtube_dl.utils import (
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ExtractorError,
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find_xpath_attr,
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fix_xml_ampersands,
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get_element_by_class,
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InAdvancePagedList,
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intlist_to_bytes,
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is_html,
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@ -991,5 +992,13 @@ The first line
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self.assertEqual(urshift(3, 1), 1)
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self.assertEqual(urshift(-3, 1), 2147483646)
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def test_get_element_by_class(self):
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html = '''
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<span class="foo bar">nice</span>
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'''
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self.assertEqual(get_element_by_class('foo', html), 'nice')
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self.assertEqual(get_element_by_class('no-such-class', html), None)
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if __name__ == '__main__':
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unittest.main()
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@ -310,9 +310,17 @@ def get_element_by_id(id, html):
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return get_element_by_attribute('id', id, html)
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def get_element_by_attribute(attribute, value, html):
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def get_element_by_class(class_name, html):
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return get_element_by_attribute(
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'class', r'[^\'"]*\b%s\b[^\'"]*' % re.escape(class_name),
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html, escape_value=False)
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def get_element_by_attribute(attribute, value, html, escape_value=True):
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"""Return the content of the tag with the specified attribute in the passed HTML document"""
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value = re.escape(value) if escape_value else value
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m = re.search(r'''(?xs)
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<([a-zA-Z0-9:._-]+)
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(?:\s+[a-zA-Z0-9:._-]+(?:=[a-zA-Z0-9:._-]*|="[^"]*"|='[^']*'))*?
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@ -321,7 +329,7 @@ def get_element_by_attribute(attribute, value, html):
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\s*>
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(?P<content>.*?)
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</\1>
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''' % (re.escape(attribute), re.escape(value)), html)
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''' % (re.escape(attribute), value), html)
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if not m:
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return None
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