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Diffstat (limited to 'env/lib/python3.10/site-packages/lxml/cssselect.py')
-rw-r--r-- | env/lib/python3.10/site-packages/lxml/cssselect.py | 102 |
1 files changed, 0 insertions, 102 deletions
diff --git a/env/lib/python3.10/site-packages/lxml/cssselect.py b/env/lib/python3.10/site-packages/lxml/cssselect.py deleted file mode 100644 index 586a142..0000000 --- a/env/lib/python3.10/site-packages/lxml/cssselect.py +++ /dev/null @@ -1,102 +0,0 @@ -"""CSS Selectors based on XPath. - -This module supports selecting XML/HTML tags based on CSS selectors. -See the `CSSSelector` class for details. - -This is a thin wrapper around cssselect 0.7 or later. -""" - -from __future__ import absolute_import - -from . import etree -try: - import cssselect as external_cssselect -except ImportError: - raise ImportError( - 'cssselect does not seem to be installed. ' - 'See http://packages.python.org/cssselect/') - - -SelectorSyntaxError = external_cssselect.SelectorSyntaxError -ExpressionError = external_cssselect.ExpressionError -SelectorError = external_cssselect.SelectorError - - -__all__ = ['SelectorSyntaxError', 'ExpressionError', 'SelectorError', - 'CSSSelector'] - - -class LxmlTranslator(external_cssselect.GenericTranslator): - """ - A custom CSS selector to XPath translator with lxml-specific extensions. - """ - def xpath_contains_function(self, xpath, function): - # Defined there, removed in later drafts: - # http://www.w3.org/TR/2001/CR-css3-selectors-20011113/#content-selectors - if function.argument_types() not in (['STRING'], ['IDENT']): - raise ExpressionError( - "Expected a single string or ident for :contains(), got %r" - % function.arguments) - value = function.arguments[0].value - return xpath.add_condition( - 'contains(__lxml_internal_css:lower-case(string(.)), %s)' - % self.xpath_literal(value.lower())) - - -class LxmlHTMLTranslator(LxmlTranslator, external_cssselect.HTMLTranslator): - """ - lxml extensions + HTML support. - """ - - -def _make_lower_case(context, s): - return s.lower() - -ns = etree.FunctionNamespace('http://codespeak.net/lxml/css/') -ns.prefix = '__lxml_internal_css' -ns['lower-case'] = _make_lower_case - - -class CSSSelector(etree.XPath): - """A CSS selector. - - Usage:: - - >>> from lxml import etree, cssselect - >>> select = cssselect.CSSSelector("a tag > child") - - >>> root = etree.XML("<a><b><c/><tag><child>TEXT</child></tag></b></a>") - >>> [ el.tag for el in select(root) ] - ['child'] - - To use CSS namespaces, you need to pass a prefix-to-namespace - mapping as ``namespaces`` keyword argument:: - - >>> rdfns = 'http://www.w3.org/1999/02/22-rdf-syntax-ns#' - >>> select_ns = cssselect.CSSSelector('root > rdf|Description', - ... namespaces={'rdf': rdfns}) - - >>> rdf = etree.XML(( - ... '<root xmlns:rdf="%s">' - ... '<rdf:Description>blah</rdf:Description>' - ... '</root>') % rdfns) - >>> [(el.tag, el.text) for el in select_ns(rdf)] - [('{http://www.w3.org/1999/02/22-rdf-syntax-ns#}Description', 'blah')] - - """ - def __init__(self, css, namespaces=None, translator='xml'): - if translator == 'xml': - translator = LxmlTranslator() - elif translator == 'html': - translator = LxmlHTMLTranslator() - elif translator == 'xhtml': - translator = LxmlHTMLTranslator(xhtml=True) - path = translator.css_to_xpath(css) - etree.XPath.__init__(self, path, namespaces=namespaces) - self.css = css - - def __repr__(self): - return '<%s %s for %r>' % ( - self.__class__.__name__, - hex(abs(id(self)))[2:], - self.css) |