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111 lines
3.6 KiB
Python
111 lines
3.6 KiB
Python
"""
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Soup Sieve.
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A CSS selector filter for BeautifulSoup4.
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MIT License
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Copyright (c) 2018 Isaac Muse
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.
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"""
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from .__meta__ import __version__, __version_info__ # noqa: F401
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from . import css_parser as cp
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from . import css_match as cm
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from . import css_types as ct
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from .util import DEBUG, SelectorSyntaxError # noqa: F401
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__all__ = (
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'DEBUG', 'SelectorSyntaxError', 'SoupSieve',
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'closest', 'compile', 'filter', 'iselect',
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'match', 'select', 'select_one'
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)
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SoupSieve = cm.SoupSieve
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def compile(pattern, namespaces=None, flags=0, **kwargs): # noqa: A001
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"""Compile CSS pattern."""
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if namespaces is not None:
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namespaces = ct.Namespaces(**namespaces)
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custom = kwargs.get('custom')
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if custom is not None:
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custom = ct.CustomSelectors(**custom)
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if isinstance(pattern, SoupSieve):
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if flags:
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raise ValueError("Cannot process 'flags' argument on a compiled selector list")
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elif namespaces is not None:
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raise ValueError("Cannot process 'namespaces' argument on a compiled selector list")
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elif custom is not None:
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raise ValueError("Cannot process 'custom' argument on a compiled selector list")
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return pattern
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return cp._cached_css_compile(pattern, namespaces, custom, flags)
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def purge():
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"""Purge cached patterns."""
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cp._purge_cache()
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def closest(select, tag, namespaces=None, flags=0, **kwargs):
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"""Match closest ancestor."""
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return compile(select, namespaces, flags, **kwargs).closest(tag)
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def match(select, tag, namespaces=None, flags=0, **kwargs):
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"""Match node."""
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return compile(select, namespaces, flags, **kwargs).match(tag)
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def filter(select, iterable, namespaces=None, flags=0, **kwargs): # noqa: A001
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"""Filter list of nodes."""
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return compile(select, namespaces, flags, **kwargs).filter(iterable)
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def select_one(select, tag, namespaces=None, flags=0, **kwargs):
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"""Select a single tag."""
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return compile(select, namespaces, flags, **kwargs).select_one(tag)
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def select(select, tag, namespaces=None, limit=0, flags=0, **kwargs):
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"""Select the specified tags."""
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return compile(select, namespaces, flags, **kwargs).select(tag, limit)
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def iselect(select, tag, namespaces=None, limit=0, flags=0, **kwargs):
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"""Iterate the specified tags."""
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for el in compile(select, namespaces, flags, **kwargs).iselect(tag, limit):
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yield el
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def escape(ident):
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"""Escape identifier."""
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return cp.escape(ident)
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