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Add helper function find_path_attr
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@ -4,6 +4,7 @@
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import sys
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import unittest
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import xml.etree.ElementTree
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# Allow direct execution
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import os
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@ -16,6 +17,7 @@
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from youtube_dl.utils import orderedSet
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from youtube_dl.utils import DateRange
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from youtube_dl.utils import unified_strdate
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from youtube_dl.utils import find_xpath_attr
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if sys.version_info < (3, 0):
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_compat_str = lambda b: b.decode('unicode-escape')
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@ -112,5 +114,18 @@ def test_unified_dates(self):
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self.assertEqual(unified_strdate('Dec 14, 2012'), '20121214')
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self.assertEqual(unified_strdate('2012/10/11 01:56:38 +0000'), '20121011')
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def test_find_xpath_attr(self):
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testxml = u'''<root>
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<node/>
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<node x="a"/>
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<node x="a" y="c" />
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<node x="b" y="d" />
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</root>'''
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doc = xml.etree.ElementTree.fromstring(testxml)
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self.assertEqual(find_xpath_attr(doc, './/fourohfour', 'n', 'v'), None)
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self.assertEqual(find_xpath_attr(doc, './/node', 'x', 'a'), doc[1])
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self.assertEqual(find_xpath_attr(doc, './/node', 'y', 'c'), doc[2])
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if __name__ == '__main__':
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unittest.main()
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@ -198,6 +198,20 @@ def write_json_file(obj, fn):
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with open(fn, 'w', encoding='utf-8') as f:
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json.dump(obj, f)
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if sys.version_info >= (2,7):
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def find_xpath_attr(node, xpath, key, val):
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""" Find the xpath xpath[@key=val] """
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assert re.match(r'^[a-z]+$', key)
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assert re.match(r'^[a-z]*$', val)
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expr = xpath + u"[@%s='%s']" % (key, val)
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return node.find(expr)
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else:
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def find_xpath_attr(node, xpath, key, val):
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for f in node.findall(xpath):
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if f.attrib.get(key) == val:
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return f
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return None
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def htmlentity_transform(matchobj):
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"""Transforms an HTML entity to a character.
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