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Name	Size	Permission	Date
html	[ DIR ]	drwxr-xr-x	2017-04-04 16:36
includes	[ DIR ]	drwxr-xr-x	2017-04-04 16:36
isoschematron	[ DIR ]	drwxr-xr-x	2017-04-04 16:36
ElementInclude.py	7.46 KB	-rw-r--r--	2011-09-25 18:58
ElementInclude.pyc	4.33 KB	-rw-r--r--	2015-03-08 13:10
ElementInclude.pyo	4.33 KB	-rw-r--r--	2015-03-08 13:10
__init__.py	551 B	-rw-r--r--	2012-10-07 20:04
__init__.pyc	776 B	-rw-r--r--	2015-03-08 13:10
__init__.pyo	776 B	-rw-r--r--	2015-03-08 13:10
_elementpath.py	9.09 KB	-rw-r--r--	2015-02-07 20:39
_elementpath.pyc	7.47 KB	-rw-r--r--	2015-03-08 13:10
_elementpath.pyo	7.47 KB	-rw-r--r--	2015-03-08 13:10
builder.py	7.96 KB	-rw-r--r--	2014-09-05 14:44
builder.pyc	6.88 KB	-rw-r--r--	2015-03-08 13:10
builder.pyo	6.84 KB	-rw-r--r--	2015-03-08 13:10
cssselect.py	3.39 KB	-rw-r--r--	2012-10-07 20:04
cssselect.pyc	4.04 KB	-rw-r--r--	2015-03-08 13:10
cssselect.pyo	4.04 KB	-rw-r--r--	2015-03-08 13:10
doctestcompare.py	17.86 KB	-rw-r--r--	2015-02-07 20:39
doctestcompare.pyc	16.75 KB	-rw-r--r--	2015-03-08 13:10
doctestcompare.pyo	16.75 KB	-rw-r--r--	2015-03-08 13:10
etree.so	1.57 MB	-rwxr-xr-x	2015-03-08 13:10
lxml.etree.h	8.84 KB	-rw-r--r--	2015-02-07 20:51
lxml.etree_api.h	16.49 KB	-rw-r--r--	2015-02-07 20:51
objectify.so	339.34 KB	-rwxr-xr-x	2015-03-08 13:10
pyclasslookup.py	92 B	-rw-r--r--	2014-09-05 14:44
pyclasslookup.pyc	218 B	-rw-r--r--	2015-03-08 13:10
pyclasslookup.pyo	218 B	-rw-r--r--	2015-03-08 13:10
sax.py	8.33 KB	-rw-r--r--	2014-11-20 19:37
sax.pyc	8.68 KB	-rw-r--r--	2015-03-08 13:10
sax.pyo	8.68 KB	-rw-r--r--	2015-03-08 13:10
usedoctest.py	230 B	-rw-r--r--	2011-09-25 18:58
usedoctest.pyc	427 B	-rw-r--r--	2015-03-08 13:10
usedoctest.pyo	427 B	-rw-r--r--	2015-03-08 13:10

Rename

"""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.
"""

import sys
from lxml import etree

## Work-around the lack of absolute import in Python 2.4
#from __future__ import absolute_import
#from cssselect import ...
try:
    external_cssselect = __import__('cssselect')
except ImportError:
    raise ImportError('cssselect seems not 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)