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cssselect.cpython-37.pyc
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B U�*W& � @ s� d Z ddlmZ ddlmZ y ddlZW n ek rD ed��Y nX ejZej Z ej Z ddd d gZ G d d � d ej �Z G d d� de ej�Zdd� Ze�d�Zde_eed< G dd � d ej�ZdS )z�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. � )�absolute_import� )�etreeNzRcssselect does not seem to be installed. See http://packages.python.org/cssselect/�SelectorSyntaxError�ExpressionError� SelectorError� CSSSelectorc @ s e Zd ZdZdd� ZdS )�LxmlTranslatorzR A custom CSS selector to XPath translator with lxml-specific extensions. c C sF |� � dgdgfkr"td|j ��|jd j}|�d| �|�� � �S )N�STRINGZIDENTz9Expected a single string or ident for :contains(), got %rr z7contains(__lxml_internal_css:lower-case(string(.)), %s))Zargument_typesr � arguments�valueZ add_conditionZ xpath_literal�lower)�selfZxpath�functionr � r �A/opt/alt/python37/lib64/python3.7/site-packages/lxml/cssselect.py�xpath_contains_function! s z&LxmlTranslator.xpath_contains_functionN)�__name__� __module__� __qualname__�__doc__r r r r r r s r c @ s e Zd ZdZdS )�LxmlHTMLTranslatorz) lxml extensions + HTML support. N)r r r r r r r r r . s r c C s |� � S )N)r )�context�sr r r �_make_lower_case4 s r z http://codespeak.net/lxml/css/Z__lxml_internal_cssz lower-casec @ s" e Zd ZdZddd�Zdd� ZdS ) r a� 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')] N�xmlc C sX |dkrt � }n"|dkr t� }n|dkr2tdd�}|�|�}tjj| ||d� || _d S )Nr �html�xhtmlT)r )� namespaces)r r Z css_to_xpathr �XPath�__init__�css)r r! r Z translator�pathr r r r W s zCSSSelector.__init__c C s( d| j jttt| ���dd � | jf S )Nz<%s %s for %r>� )� __class__r �hex�abs�idr! )r r r r �__repr__b s zCSSSelector.__repr__)Nr )r r r r r r( r r r r r < s )r � __future__r � r � cssselectZexternal_cssselect� ImportErrorr r r �__all__ZGenericTranslatorr ZHTMLTranslatorr r ZFunctionNamespace�ns�prefixr r r r r r �<module> s&