mirror of
https://github.com/ytdl-org/youtube-dl.git
synced 2024-11-28 05:01:49 +00:00
[utils] Update traverse_obj() from yt-dlp
* remove `is_user_input` option per https://github.com/yt-dlp/yt-dlp/pull/8673 * support traversal of compat_xml_etree_ElementTree_Element per https://github.com/yt-dlp/yt-dlp/pull/8911 * allow un/branching using all and any per https://github.com/yt-dlp/yt-dlp/pull/9571 * support traversal of compat_cookies.Morsel and multiple types in `set()` keys per https://github.com/yt-dlp/yt-dlp/pull/9577 thx Grub4k for these * also, move traversal tests to a separate class * allow for unordered dicts in tests for Py<3.7
This commit is contained in:
dirkf
parent
a08f2b7e45
commit
06da64ee51
3 changed files with 267 additions and 101 deletions
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@ -123,6 +123,7 @@ from youtube_dl.compat import (
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compat_chr,
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compat_etree_fromstring,
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compat_getenv,
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compat_http_cookies,
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compat_os_name,
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compat_setenv,
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compat_str,
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@ -132,10 +133,6 @@ from youtube_dl.compat import (
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class TestUtil(unittest.TestCase):
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# yt-dlp shim
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def assertCountEqual(self, expected, got, msg='count should be the same'):
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return self.assertEqual(len(tuple(expected)), len(tuple(got)), msg=msg)
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def test_timeconvert(self):
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self.assertTrue(timeconvert('') is None)
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self.assertTrue(timeconvert('bougrg') is None)
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@ -740,28 +737,6 @@ class TestUtil(unittest.TestCase):
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self.assertRaises(
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ValueError, multipart_encode, {b'field': b'value'}, boundary='value')
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def test_dict_get(self):
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FALSE_VALUES = {
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'none': None,
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'false': False,
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'zero': 0,
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'empty_string': '',
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'empty_list': [],
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}
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d = FALSE_VALUES.copy()
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d['a'] = 42
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self.assertEqual(dict_get(d, 'a'), 42)
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self.assertEqual(dict_get(d, 'b'), None)
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self.assertEqual(dict_get(d, 'b', 42), 42)
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self.assertEqual(dict_get(d, ('a', )), 42)
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self.assertEqual(dict_get(d, ('b', 'a', )), 42)
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self.assertEqual(dict_get(d, ('b', 'c', 'a', 'd', )), 42)
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self.assertEqual(dict_get(d, ('b', 'c', )), None)
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self.assertEqual(dict_get(d, ('b', 'c', ), 42), 42)
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for key, false_value in FALSE_VALUES.items():
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self.assertEqual(dict_get(d, ('b', 'c', key, )), None)
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self.assertEqual(dict_get(d, ('b', 'c', key, ), skip_false_values=False), false_value)
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def test_merge_dicts(self):
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self.assertEqual(merge_dicts({'a': 1}, {'b': 2}), {'a': 1, 'b': 2})
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self.assertEqual(merge_dicts({'a': 1}, {'a': 2}), {'a': 1})
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@ -1703,24 +1678,46 @@ Line 1
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self.assertEqual(variadic('spam', allowed_types=dict), 'spam')
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self.assertEqual(variadic('spam', allowed_types=[dict]), 'spam')
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def test_join_nonempty(self):
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self.assertEqual(join_nonempty('a', 'b'), 'a-b')
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self.assertEqual(join_nonempty(
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'a', 'b', 'c', 'd',
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from_dict={'a': 'c', 'c': [], 'b': 'd', 'd': None}), 'c-d')
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class TestTraversal(unittest.TestCase):
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str = compat_str
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_TEST_DATA = {
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100: 100,
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1.2: 1.2,
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'str': 'str',
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'None': None,
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'...': Ellipsis,
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'urls': [
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{'index': 0, 'url': 'https://www.example.com/0'},
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{'index': 1, 'url': 'https://www.example.com/1'},
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],
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'data': (
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{'index': 2},
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{'index': 3},
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),
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'dict': {},
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}
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# yt-dlp shim
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def assertCountEqual(self, expected, got, msg='count should be the same'):
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return self.assertEqual(len(tuple(expected)), len(tuple(got)), msg=msg)
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def assertMaybeCountEqual(self, *args, **kwargs):
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if sys.version_info < (3, 7):
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# random dict order
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return self.assertCountEqual(*args, **kwargs)
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else:
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return self.assertEqual(*args, **kwargs)
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def test_traverse_obj(self):
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str = compat_str
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_TEST_DATA = {
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100: 100,
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1.2: 1.2,
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'str': 'str',
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'None': None,
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'...': Ellipsis,
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'urls': [
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{'index': 0, 'url': 'https://www.example.com/0'},
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{'index': 1, 'url': 'https://www.example.com/1'},
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],
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'data': (
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{'index': 2},
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{'index': 3},
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),
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'dict': {},
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}
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str = self.str
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_TEST_DATA = self._TEST_DATA
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# define a pukka Iterable
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def iter_range(stop):
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@ -1771,15 +1768,19 @@ Line 1
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# Test set as key (transformation/type, like `expected_type`)
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self.assertEqual(traverse_obj(_TEST_DATA, (Ellipsis, T(str.upper), )), ['STR'],
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msg='Function in set should be a transformation')
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self.assertEqual(traverse_obj(_TEST_DATA, ('fail', T(lambda _: 'const'))), 'const',
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msg='Function in set should always be called')
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self.assertEqual(traverse_obj(_TEST_DATA, (Ellipsis, T(str))), ['str'],
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msg='Type in set should be a type filter')
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self.assertMaybeCountEqual(traverse_obj(_TEST_DATA, (Ellipsis, T(str, int))), [100, 'str'],
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msg='Multiple types in set should be a type filter')
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self.assertEqual(traverse_obj(_TEST_DATA, T(dict)), _TEST_DATA,
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msg='A single set should be wrapped into a path')
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self.assertEqual(traverse_obj(_TEST_DATA, (Ellipsis, T(str.upper))), ['STR'],
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msg='Transformation function should not raise')
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self.assertEqual(traverse_obj(_TEST_DATA, (Ellipsis, T(str_or_none))),
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[item for item in map(str_or_none, _TEST_DATA.values()) if item is not None],
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msg='Function in set should be a transformation')
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self.assertMaybeCountEqual(traverse_obj(_TEST_DATA, (Ellipsis, T(str_or_none))),
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[item for item in map(str_or_none, _TEST_DATA.values()) if item is not None],
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msg='Function in set should be a transformation')
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if __debug__:
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with self.assertRaises(Exception, msg='Sets with length != 1 should raise in debug'):
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traverse_obj(_TEST_DATA, set())
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@ -1992,23 +1993,6 @@ Line 1
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self.assertEqual(traverse_obj({}, (0, slice(1)), _traverse_string=True), [],
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msg='branching should result in list if `traverse_string`')
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# Test is_user_input behavior
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_IS_USER_INPUT_DATA = {'range8': list(range(8))}
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self.assertEqual(traverse_obj(_IS_USER_INPUT_DATA, ('range8', '3'),
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_is_user_input=True), 3,
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msg='allow for string indexing if `is_user_input`')
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self.assertCountEqual(traverse_obj(_IS_USER_INPUT_DATA, ('range8', '3:'),
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_is_user_input=True), tuple(range(8))[3:],
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msg='allow for string slice if `is_user_input`')
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self.assertCountEqual(traverse_obj(_IS_USER_INPUT_DATA, ('range8', ':4:2'),
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_is_user_input=True), tuple(range(8))[:4:2],
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msg='allow step in string slice if `is_user_input`')
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self.assertCountEqual(traverse_obj(_IS_USER_INPUT_DATA, ('range8', ':'),
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_is_user_input=True), range(8),
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msg='`:` should be treated as `...` if `is_user_input`')
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with self.assertRaises(TypeError, msg='too many params should result in error'):
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traverse_obj(_IS_USER_INPUT_DATA, ('range8', ':::'), _is_user_input=True)
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# Test re.Match as input obj
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mobj = re.match(r'^0(12)(?P<group>3)(4)?$', '0123')
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self.assertEqual(traverse_obj(mobj, Ellipsis), [x for x in mobj.groups() if x is not None],
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@ -2030,14 +2014,151 @@ Line 1
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self.assertEqual(traverse_obj(mobj, lambda k, _: k in (0, 'group')), ['0123', '3'],
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msg='function on a `re.Match` should give group name as well')
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# Test xml.etree.ElementTree.Element as input obj
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etree = compat_etree_fromstring('''<?xml version="1.0"?>
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<data>
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<country name="Liechtenstein">
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<rank>1</rank>
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<year>2008</year>
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<gdppc>141100</gdppc>
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<neighbor name="Austria" direction="E"/>
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<neighbor name="Switzerland" direction="W"/>
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</country>
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<country name="Singapore">
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<rank>4</rank>
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<year>2011</year>
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<gdppc>59900</gdppc>
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<neighbor name="Malaysia" direction="N"/>
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</country>
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<country name="Panama">
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<rank>68</rank>
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<year>2011</year>
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<gdppc>13600</gdppc>
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<neighbor name="Costa Rica" direction="W"/>
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<neighbor name="Colombia" direction="E"/>
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</country>
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</data>''')
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self.assertEqual(traverse_obj(etree, ''), etree,
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msg='empty str key should return the element itself')
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self.assertEqual(traverse_obj(etree, 'country'), list(etree),
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msg='str key should return all children with that tag name')
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self.assertEqual(traverse_obj(etree, Ellipsis), list(etree),
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msg='`...` as key should return all children')
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self.assertEqual(traverse_obj(etree, lambda _, x: x[0].text == '4'), [etree[1]],
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msg='function as key should get element as value')
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self.assertEqual(traverse_obj(etree, lambda i, _: i == 1), [etree[1]],
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msg='function as key should get index as key')
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self.assertEqual(traverse_obj(etree, 0), etree[0],
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msg='int key should return the nth child')
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self.assertEqual(traverse_obj(etree, './/neighbor/@name'),
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['Austria', 'Switzerland', 'Malaysia', 'Costa Rica', 'Colombia'],
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msg='`@<attribute>` at end of path should give that attribute')
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self.assertEqual(traverse_obj(etree, '//neighbor/@fail'), [None, None, None, None, None],
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msg='`@<nonexistent>` at end of path should give `None`')
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self.assertEqual(traverse_obj(etree, ('//neighbor/@', 2)), {'name': 'Malaysia', 'direction': 'N'},
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msg='`@` should give the full attribute dict')
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self.assertEqual(traverse_obj(etree, '//year/text()'), ['2008', '2011', '2011'],
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msg='`text()` at end of path should give the inner text')
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self.assertEqual(traverse_obj(etree, '//*[@direction]/@direction'), ['E', 'W', 'N', 'W', 'E'],
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msg='full python xpath features should be supported')
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self.assertEqual(traverse_obj(etree, (0, '@name')), 'Liechtenstein',
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msg='special transformations should act on current element')
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self.assertEqual(traverse_obj(etree, ('country', 0, Ellipsis, 'text()', T(int_or_none))), [1, 2008, 141100],
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msg='special transformations should act on current element')
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def test_traversal_unbranching(self):
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# str = self.str
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_TEST_DATA = self._TEST_DATA
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self.assertEqual(traverse_obj(_TEST_DATA, [(100, 1.2), all]), [100, 1.2],
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msg='`all` should give all results as list')
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self.assertEqual(traverse_obj(_TEST_DATA, [(100, 1.2), any]), 100,
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msg='`any` should give the first result')
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self.assertEqual(traverse_obj(_TEST_DATA, [100, all]), [100],
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msg='`all` should give list if non branching')
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self.assertEqual(traverse_obj(_TEST_DATA, [100, any]), 100,
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msg='`any` should give single item if non branching')
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self.assertEqual(traverse_obj(_TEST_DATA, [('dict', 'None', 100), all]), [100],
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msg='`all` should filter `None` and empty dict')
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self.assertEqual(traverse_obj(_TEST_DATA, [('dict', 'None', 100), any]), 100,
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msg='`any` should filter `None` and empty dict')
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self.assertEqual(traverse_obj(_TEST_DATA, [{
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'all': [('dict', 'None', 100, 1.2), all],
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'any': [('dict', 'None', 100, 1.2), any],
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}]), {'all': [100, 1.2], 'any': 100},
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msg='`all`/`any` should apply to each dict path separately')
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self.assertEqual(traverse_obj(_TEST_DATA, [{
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'all': [('dict', 'None', 100, 1.2), all],
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'any': [('dict', 'None', 100, 1.2), any],
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}], get_all=False), {'all': [100, 1.2], 'any': 100},
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msg='`all`/`any` should apply to dict regardless of `get_all`')
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self.assertIs(traverse_obj(_TEST_DATA, [('dict', 'None', 100, 1.2), all, T(float)]), None,
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msg='`all` should reset branching status')
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self.assertIs(traverse_obj(_TEST_DATA, [('dict', 'None', 100, 1.2), any, T(float)]), None,
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msg='`any` should reset branching status')
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self.assertEqual(traverse_obj(_TEST_DATA, [('dict', 'None', 100, 1.2), all, Ellipsis, T(float)]), [1.2],
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msg='`all` should allow further branching')
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self.assertEqual(traverse_obj(_TEST_DATA, [('dict', 'None', 'urls', 'data'), any, Ellipsis, 'index']), [0, 1],
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msg='`any` should allow further branching')
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def test_traversal_morsel(self):
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values = {
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'expires': 'a',
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'path': 'b',
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'comment': 'c',
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'domain': 'd',
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'max-age': 'e',
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'secure': 'f',
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'httponly': 'g',
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'version': 'h',
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'samesite': 'i',
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}
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# SameSite added in Py3.8, breaks .update for 3.5-3.7
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if sys.version_info < (3, 8):
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del values['samesite']
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morsel = compat_http_cookies.Morsel()
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morsel.set(str('item_key'), 'item_value', 'coded_value')
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morsel.update(values)
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values['key'] = str('item_key')
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values['value'] = 'item_value'
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values = dict((str(k), v) for k, v in values.items())
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# make test pass even without ordered dict
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value_set = set(values.values())
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for key, value in values.items():
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self.assertEqual(traverse_obj(morsel, key), value,
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msg='Morsel should provide access to all values')
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self.assertEqual(set(traverse_obj(morsel, Ellipsis)), value_set,
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msg='`...` should yield all values')
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self.assertEqual(set(traverse_obj(morsel, lambda k, v: True)), value_set,
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msg='function key should yield all values')
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self.assertIs(traverse_obj(morsel, [(None,), any]), morsel,
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msg='Morsel should not be implicitly changed to dict on usage')
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def test_get_first(self):
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self.assertEqual(get_first([{'a': None}, {'a': 'spam'}], 'a'), 'spam')
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def test_join_nonempty(self):
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self.assertEqual(join_nonempty('a', 'b'), 'a-b')
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self.assertEqual(join_nonempty(
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'a', 'b', 'c', 'd',
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from_dict={'a': 'c', 'c': [], 'b': 'd', 'd': None}), 'c-d')
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def test_dict_get(self):
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FALSE_VALUES = {
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'none': None,
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'false': False,
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'zero': 0,
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'empty_string': '',
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'empty_list': [],
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}
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d = FALSE_VALUES.copy()
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d['a'] = 42
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self.assertEqual(dict_get(d, 'a'), 42)
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self.assertEqual(dict_get(d, 'b'), None)
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self.assertEqual(dict_get(d, 'b', 42), 42)
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self.assertEqual(dict_get(d, ('a', )), 42)
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self.assertEqual(dict_get(d, ('b', 'a', )), 42)
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self.assertEqual(dict_get(d, ('b', 'c', 'a', 'd', )), 42)
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self.assertEqual(dict_get(d, ('b', 'c', )), None)
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self.assertEqual(dict_get(d, ('b', 'c', ), 42), 42)
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for key, false_value in FALSE_VALUES.items():
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self.assertEqual(dict_get(d, ('b', 'c', key, )), None)
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self.assertEqual(dict_get(d, ('b', 'c', key, ), skip_false_values=False), false_value)
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if __name__ == '__main__':
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@ -2719,8 +2719,14 @@ if sys.version_info < (2, 7):
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if isinstance(xpath, compat_str):
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xpath = xpath.encode('ascii')
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return xpath
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def compat_etree_iterfind(element, match):
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for from_ in element.findall(match):
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yield from_
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else:
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compat_xpath = lambda xpath: xpath
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compat_etree_iterfind = lambda element, match: element.iterfind(match)
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compat_os_name = os._name if os.name == 'java' else os.name
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@ -2955,7 +2961,7 @@ except ImportError:
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return self
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def __exit__(self, exc_type, exc_val, exc_tb):
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return exc_val is not None and isinstance(exc_val, self._exceptions or tuple())
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return exc_type is not None and issubclass(exc_type, self._exceptions or tuple())
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# subprocess.Popen context manager
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@ -3308,6 +3314,7 @@ __all__ = [
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'compat_contextlib_suppress',
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'compat_ctypes_WINFUNCTYPE',
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'compat_etree_fromstring',
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'compat_etree_iterfind',
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'compat_filter',
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'compat_get_terminal_size',
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'compat_getenv',
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@ -49,11 +49,14 @@ from .compat import (
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compat_cookiejar,
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compat_ctypes_WINFUNCTYPE,
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compat_datetime_timedelta_total_seconds,
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compat_etree_Element,
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compat_etree_fromstring,
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compat_etree_iterfind,
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compat_expanduser,
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compat_html_entities,
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compat_html_entities_html5,
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compat_http_client,
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compat_http_cookies,
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compat_integer_types,
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compat_kwargs,
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compat_ncompress as ncompress,
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@ -6253,15 +6256,16 @@ if __debug__:
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def traverse_obj(obj, *paths, **kwargs):
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"""
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||||
Safely traverse nested `dict`s and `Iterable`s
|
||||
Safely traverse nested `dict`s and `Iterable`s, etc
|
||||
|
||||
>>> obj = [{}, {"key": "value"}]
|
||||
>>> traverse_obj(obj, (1, "key"))
|
||||
"value"
|
||||
'value'
|
||||
|
||||
Each of the provided `paths` is tested and the first producing a valid result will be returned.
|
||||
The next path will also be tested if the path branched but no results could be found.
|
||||
Supported values for traversal are `Mapping`, `Iterable` and `re.Match`.
|
||||
Supported values for traversal are `Mapping`, `Iterable`, `re.Match`, `xml.etree.ElementTree`
|
||||
(xpath) and `http.cookies.Morsel`.
|
||||
Unhelpful values (`{}`, `None`) are treated as the absence of a value and discarded.
|
||||
|
||||
The paths will be wrapped in `variadic`, so that `'key'` is conveniently the same as `('key', )`.
|
||||
|
|
@ -6269,8 +6273,9 @@ def traverse_obj(obj, *paths, **kwargs):
|
|||
The keys in the path can be one of:
|
||||
- `None`: Return the current object.
|
||||
- `set`: Requires the only item in the set to be a type or function,
|
||||
like `{type}`/`{func}`. If a `type`, returns only values
|
||||
of this type. If a function, returns `func(obj)`.
|
||||
like `{type}`/`{type, type, ...}`/`{func}`. If one or more `type`s,
|
||||
return only values that have one of the types. If a function,
|
||||
return `func(obj)`.
|
||||
- `str`/`int`: Return `obj[key]`. For `re.Match`, return `obj.group(key)`.
|
||||
- `slice`: Branch out and return all values in `obj[key]`.
|
||||
- `Ellipsis`: Branch out and return a list of all values.
|
||||
|
|
@ -6282,8 +6287,10 @@ def traverse_obj(obj, *paths, **kwargs):
|
|||
For `Iterable`s, `key` is the enumeration count of the value.
|
||||
For `re.Match`es, `key` is the group number (0 = full match)
|
||||
as well as additionally any group names, if given.
|
||||
- `dict` Transform the current object and return a matching dict.
|
||||
- `dict`: Transform the current object and return a matching dict.
|
||||
Read as: `{key: traverse_obj(obj, path) for key, path in dct.items()}`.
|
||||
- `any`-builtin: Take the first matching object and return it, resetting branching.
|
||||
- `all`-builtin: Take all matching objects and return them as a list, resetting branching.
|
||||
|
||||
`tuple`, `list`, and `dict` all support nested paths and branches.
|
||||
|
||||
|
|
@ -6299,10 +6306,8 @@ def traverse_obj(obj, *paths, **kwargs):
|
|||
@param get_all If `False`, return the first matching result, otherwise all matching ones.
|
||||
@param casesense If `False`, consider string dictionary keys as case insensitive.
|
||||
|
||||
The following are only meant to be used by YoutubeDL.prepare_outtmpl and are not part of the API
|
||||
The following is only meant to be used by YoutubeDL.prepare_outtmpl and is not part of the API
|
||||
|
||||
@param _is_user_input Whether the keys are generated from user input.
|
||||
If `True` strings get converted to `int`/`slice` if needed.
|
||||
@param _traverse_string Whether to traverse into objects as strings.
|
||||
If `True`, any non-compatible object will first be
|
||||
converted into a string and then traversed into.
|
||||
|
|
@ -6322,7 +6327,6 @@ def traverse_obj(obj, *paths, **kwargs):
|
|||
expected_type = kwargs.get('expected_type')
|
||||
get_all = kwargs.get('get_all', True)
|
||||
casesense = kwargs.get('casesense', True)
|
||||
_is_user_input = kwargs.get('_is_user_input', False)
|
||||
_traverse_string = kwargs.get('_traverse_string', False)
|
||||
|
||||
# instant compat
|
||||
|
|
@ -6336,10 +6340,8 @@ def traverse_obj(obj, *paths, **kwargs):
|
|||
type_test = lambda val: try_call(expected_type or IDENTITY, args=(val,))
|
||||
|
||||
def lookup_or_none(v, k, getter=None):
|
||||
try:
|
||||
with compat_contextlib_suppress(LookupError):
|
||||
return getter(v, k) if getter else v[k]
|
||||
except IndexError:
|
||||
return None
|
||||
|
||||
def from_iterable(iterables):
|
||||
# chain.from_iterable(['ABC', 'DEF']) --> A B C D E F
|
||||
|
|
@ -6361,12 +6363,13 @@ def traverse_obj(obj, *paths, **kwargs):
|
|||
result = obj
|
||||
|
||||
elif isinstance(key, set):
|
||||
assert len(key) == 1, 'Set should only be used to wrap a single item'
|
||||
item = next(iter(key))
|
||||
if isinstance(item, type):
|
||||
result = obj if isinstance(obj, item) else None
|
||||
assert len(key) >= 1, 'At least one item is required in a `set` key'
|
||||
if all(isinstance(item, type) for item in key):
|
||||
result = obj if isinstance(obj, tuple(key)) else None
|
||||
else:
|
||||
result = try_call(item, args=(obj,))
|
||||
item = next(iter(key))
|
||||
assert len(key) == 1, 'Multiple items in a `set` key must all be types'
|
||||
result = try_call(item, args=(obj,)) if not isinstance(item, type) else None
|
||||
|
||||
elif isinstance(key, (list, tuple)):
|
||||
branching = True
|
||||
|
|
@ -6375,9 +6378,11 @@ def traverse_obj(obj, *paths, **kwargs):
|
|||
|
||||
elif key is Ellipsis:
|
||||
branching = True
|
||||
if isinstance(obj, compat_http_cookies.Morsel):
|
||||
obj = dict(obj, key=obj.key, value=obj.value)
|
||||
if isinstance(obj, compat_collections_abc.Mapping):
|
||||
result = obj.values()
|
||||
elif is_iterable_like(obj):
|
||||
elif is_iterable_like(obj, (compat_collections_abc.Iterable, compat_etree_Element)):
|
||||
result = obj
|
||||
elif isinstance(obj, compat_re_Match):
|
||||
result = obj.groups()
|
||||
|
|
@ -6389,9 +6394,11 @@ def traverse_obj(obj, *paths, **kwargs):
|
|||
|
||||
elif callable(key):
|
||||
branching = True
|
||||
if isinstance(obj, compat_http_cookies.Morsel):
|
||||
obj = dict(obj, key=obj.key, value=obj.value)
|
||||
if isinstance(obj, compat_collections_abc.Mapping):
|
||||
iter_obj = obj.items()
|
||||
elif is_iterable_like(obj):
|
||||
elif is_iterable_like(obj, (compat_collections_abc.Iterable, compat_etree_Element)):
|
||||
iter_obj = enumerate(obj)
|
||||
elif isinstance(obj, compat_re_Match):
|
||||
iter_obj = itertools.chain(
|
||||
|
|
@ -6413,6 +6420,8 @@ def traverse_obj(obj, *paths, **kwargs):
|
|||
if v is not None or default is not NO_DEFAULT) or None
|
||||
|
||||
elif isinstance(obj, compat_collections_abc.Mapping):
|
||||
if isinstance(obj, compat_http_cookies.Morsel):
|
||||
obj = dict(obj, key=obj.key, value=obj.value)
|
||||
result = (try_call(obj.get, args=(key,))
|
||||
if casesense or try_call(obj.__contains__, args=(key,))
|
||||
else next((v for k, v in obj.items() if casefold(k) == key), None))
|
||||
|
|
@ -6430,12 +6439,40 @@ def traverse_obj(obj, *paths, **kwargs):
|
|||
else:
|
||||
result = None
|
||||
if isinstance(key, (int, slice)):
|
||||
if is_iterable_like(obj, compat_collections_abc.Sequence):
|
||||
if is_iterable_like(obj, (compat_collections_abc.Sequence, compat_etree_Element)):
|
||||
branching = isinstance(key, slice)
|
||||
result = lookup_or_none(obj, key)
|
||||
elif _traverse_string:
|
||||
result = lookup_or_none(str(obj), key)
|
||||
|
||||
elif isinstance(obj, compat_etree_Element) and isinstance(key, str):
|
||||
xpath, _, special = key.rpartition('/')
|
||||
if not special.startswith('@') and not special.endswith('()'):
|
||||
xpath = key
|
||||
special = None
|
||||
|
||||
# Allow abbreviations of relative paths, absolute paths error
|
||||
if xpath.startswith('/'):
|
||||
xpath = '.' + xpath
|
||||
elif xpath and not xpath.startswith('./'):
|
||||
xpath = './' + xpath
|
||||
|
||||
def apply_specials(element):
|
||||
if special is None:
|
||||
return element
|
||||
if special == '@':
|
||||
return element.attrib
|
||||
if special.startswith('@'):
|
||||
return try_call(element.attrib.get, args=(special[1:],))
|
||||
if special == 'text()':
|
||||
return element.text
|
||||
raise SyntaxError('apply_specials is missing case for {0!r}'.format(special))
|
||||
|
||||
if xpath:
|
||||
result = list(map(apply_specials, compat_etree_iterfind(obj, xpath)))
|
||||
else:
|
||||
result = apply_specials(obj)
|
||||
|
||||
return branching, result if branching else (result,)
|
||||
|
||||
def lazy_last(iterable):
|
||||
|
|
@ -6456,17 +6493,18 @@ def traverse_obj(obj, *paths, **kwargs):
|
|||
|
||||
key = None
|
||||
for last, key in lazy_last(variadic(path, (str, bytes, dict, set))):
|
||||
if _is_user_input and isinstance(key, str):
|
||||
if key == ':':
|
||||
key = Ellipsis
|
||||
elif ':' in key:
|
||||
key = slice(*map(int_or_none, key.split(':')))
|
||||
elif int_or_none(key) is not None:
|
||||
key = int(key)
|
||||
|
||||
if not casesense and isinstance(key, str):
|
||||
key = compat_casefold(key)
|
||||
|
||||
if key in (any, all):
|
||||
has_branched = False
|
||||
filtered_objs = (obj for obj in objs if obj not in (None, {}))
|
||||
if key is any:
|
||||
objs = (next(filtered_objs, None),)
|
||||
else:
|
||||
objs = (list(filtered_objs),)
|
||||
continue
|
||||
|
||||
if __debug__ and callable(key):
|
||||
# Verify function signature
|
||||
_try_bind_args(key, None, None)
|
||||
|
|
@ -6505,9 +6543,9 @@ def traverse_obj(obj, *paths, **kwargs):
|
|||
return None if default is NO_DEFAULT else default
|
||||
|
||||
|
||||
def T(x):
|
||||
""" For use in yt-dl instead of {type} or set((type,)) """
|
||||
return set((x,))
|
||||
def T(*x):
|
||||
""" For use in yt-dl instead of {type, ...} or set((type, ...)) """
|
||||
return set(x)
|
||||
|
||||
|
||||
def get_first(obj, keys, **kwargs):
|
||||
|
|
|
|||
Loading…
Reference in a new issue