PATH:
lib
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python2.7
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site-packages
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pip
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_vendor
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webencodings
� ��abc @ s6 d Z d d l m Z d d l Z d d l m Z d Z i d d 6d d 6d d 6d d 6Z i Z d � Z d � Z d � Z d e f d � � YZ e d � Z e d � Z e d � Z d d � Z d � Z e d d � Z d d � Z d � Z e d d � Z d � Z d e f d! � � YZ d" e f d# � � YZ d S($ u webencodings ~~~~~~~~~~~~ This is a Python implementation of the `WHATWG Encoding standard <http://encoding.spec.whatwg.org/>`. See README for details. :copyright: Copyright 2012 by Simon Sapin :license: BSD, see LICENSE for details. i����( t unicode_literalsNi ( t LABELSu 0.5u iso-8859-8u iso-8859-8-iu mac-cyrillicu x-mac-cyrillicu mac-romanu macintoshu cp874u windows-874c C s | j d � j � j d � S( u9 Transform (only) ASCII letters to lower case: A-Z is mapped to a-z. :param string: An Unicode string. :returns: A new Unicode string. This is used for `ASCII case-insensitive <http://encoding.spec.whatwg.org/#ascii-case-insensitive>`_ matching of encoding labels. The same matching is also used, among other things, for `CSS keywords <http://dev.w3.org/csswg/css-values/#keywords>`_. This is different from the :meth:`~py:str.lower` method of Unicode strings which also affect non-ASCII characters, sometimes mapping them into the ASCII range: >>> keyword = u'Bac\N{KELVIN SIGN}ground' >>> assert keyword.lower() == u'background' >>> assert ascii_lower(keyword) != keyword.lower() >>> assert ascii_lower(keyword) == u'bac\N{KELVIN SIGN}ground' u utf8( t encodet lowert decode( t string( ( sE /usr/lib/python2.7/site-packages/pip/_vendor/webencodings/__init__.pyt ascii_lower# s c C s� t | j d � � } t j | � } | d k r4 d St j | � } | d k r� | d k rn d d l m } n! t j | | � } t j | � } t | | � } | t | <n | S( u< Look for an encoding by its label. This is the spec’s `get an encoding <http://encoding.spec.whatwg.org/#concept-encoding-get>`_ algorithm. Supported labels are listed there. :param label: A string. :returns: An :class:`Encoding` object, or :obj:`None` for an unknown label. u u x-user-definedi ( t codec_infoN( R t stripR t gett Nonet CACHEt x_user_definedR t PYTHON_NAMESt codecst lookupt Encoding( t labelt namet encodingR t python_name( ( sE /usr/lib/python2.7/site-packages/pip/_vendor/webencodings/__init__.pyR = s c C sB t | d � r | St | � } | d k r> t d | � � n | S( u� Accept either an encoding object or label. :param encoding: An :class:`Encoding` object or a label string. :returns: An :class:`Encoding` object. :raises: :exc:`~exceptions.LookupError` for an unknown label. u codec_infou Unknown encoding label: %rN( t hasattrR R t LookupError( t encoding_or_labelR ( ( sE /usr/lib/python2.7/site-packages/pip/_vendor/webencodings/__init__.pyt _get_encoding[ s R c B s e Z d Z d � Z d � Z RS( uO Reresents a character encoding such as UTF-8, that can be used for decoding or encoding. .. attribute:: name Canonical name of the encoding .. attribute:: codec_info The actual implementation of the encoding, a stdlib :class:`~codecs.CodecInfo` object. See :func:`codecs.register`. c C s | | _ | | _ d S( N( R R ( t selfR R ( ( sE /usr/lib/python2.7/site-packages/pip/_vendor/webencodings/__init__.pyt __init__| s c C s d | j S( Nu <Encoding %s>( R ( R ( ( sE /usr/lib/python2.7/site-packages/pip/_vendor/webencodings/__init__.pyt __repr__� s ( t __name__t __module__t __doc__R R ( ( ( sE /usr/lib/python2.7/site-packages/pip/_vendor/webencodings/__init__.pyR m s u utf-8u utf-16leu utf-16beu replacec C sG t | � } t | � \ } } | p' | } | j j | | � d | f S( u� Decode a single string. :param input: A byte string :param fallback_encoding: An :class:`Encoding` object or a label string. The encoding to use if :obj:`input` does note have a BOM. :param errors: Type of error handling. See :func:`codecs.register`. :raises: :exc:`~exceptions.LookupError` for an unknown encoding label. :return: A ``(output, encoding)`` tuple of an Unicode string and an :obj:`Encoding`. i ( R t _detect_bomR R ( t inputt fallback_encodingt errorst bom_encodingR ( ( sE /usr/lib/python2.7/site-packages/pip/_vendor/webencodings/__init__.pyR � s c C sa | j d � r t | d f S| j d � r: t | d f S| j d � rW t | d f Sd | f S( uB Return (bom_encoding, input), with any BOM removed from the input.s ��i s ��s i N( t startswitht _UTF16LEt _UTF16BEt UTF8R ( R ( ( sE /usr/lib/python2.7/site-packages/pip/_vendor/webencodings/__init__.pyR � s u strictc C s t | � j j | | � d S( u; Encode a single string. :param input: An Unicode string. :param encoding: An :class:`Encoding` object or a label string. :param errors: Type of error handling. See :func:`codecs.register`. :raises: :exc:`~exceptions.LookupError` for an unknown encoding label. :return: A byte string. i ( R R R ( R R R" ( ( sE /usr/lib/python2.7/site-packages/pip/_vendor/webencodings/__init__.pyR � s c C s4 t | | � } t | | � } t | � } | | f S( u� "Pull"-based decoder. :param input: An iterable of byte strings. The input is first consumed just enough to determine the encoding based on the precense of a BOM, then consumed on demand when the return value is. :param fallback_encoding: An :class:`Encoding` object or a label string. The encoding to use if :obj:`input` does note have a BOM. :param errors: Type of error handling. See :func:`codecs.register`. :raises: :exc:`~exceptions.LookupError` for an unknown encoding label. :returns: An ``(output, encoding)`` tuple. :obj:`output` is an iterable of Unicode strings, :obj:`encoding` is the :obj:`Encoding` that is being used. ( t IncrementalDecodert _iter_decode_generatort next( R R! R" t decodert generatorR ( ( sE /usr/lib/python2.7/site-packages/pip/_vendor/webencodings/__init__.pyt iter_decode� s c c s� | j } t | � } x] | D]) } | | � } | r | j V| VPq q W| d d t �} | j V| rq | Vn d Sx( | D] } | | � } | r| | Vq| q| W| d d t �} | r� | Vn d S( uq Return a generator that first yields the :obj:`Encoding`, then yields output chukns as Unicode strings. t t finalN( R t iterR t True( R R+ R t chunckt output( ( sE /usr/lib/python2.7/site-packages/pip/_vendor/webencodings/__init__.pyR) � s( c C s t | | � j } t | | � S( uY “Pull”-based encoder. :param input: An iterable of Unicode strings. :param encoding: An :class:`Encoding` object or a label string. :param errors: Type of error handling. See :func:`codecs.register`. :raises: :exc:`~exceptions.LookupError` for an unknown encoding label. :returns: An iterable of byte strings. ( t IncrementalEncoderR t _iter_encode_generator( R R R" R ( ( sE /usr/lib/python2.7/site-packages/pip/_vendor/webencodings/__init__.pyt iter_encode� s c c sO x( | D] } | | � } | r | Vq q W| d d t �} | rK | Vn d S( Nu R/ ( R1 ( R R R2 R3 ( ( sE /usr/lib/python2.7/site-packages/pip/_vendor/webencodings/__init__.pyR5 s R( c B s& e Z d Z d d � Z e d � Z RS( uO “Push”-based decoder. :param fallback_encoding: An :class:`Encoding` object or a label string. The encoding to use if :obj:`input` does note have a BOM. :param errors: Type of error handling. See :func:`codecs.register`. :raises: :exc:`~exceptions.LookupError` for an unknown encoding label. u replacec C s7 t | � | _ | | _ d | _ d | _ d | _ d S( NR. ( R t _fallback_encodingt _errorst _bufferR t _decoderR ( R R! R" ( ( sE /usr/lib/python2.7/site-packages/pip/_vendor/webencodings/__init__.pyR s c C s� | j } | d k r" | | | � S| j | } t | � \ } } | d k r t | � d k rs | rs | | _ d S| j } n | j j | j � j } | | _ | | _ | | | � S( u� Decode one chunk of the input. :param input: A byte string. :param final: Indicate that no more input is available. Must be :obj:`True` if this is the last call. :returns: An Unicode string. i u N( R: R R9 R t lenR7 R t incrementaldecoderR8 R R ( R R R/ R+ R ( ( sE /usr/lib/python2.7/site-packages/pip/_vendor/webencodings/__init__.pyR ' s ( R R R R t FalseR ( ( ( sE /usr/lib/python2.7/site-packages/pip/_vendor/webencodings/__init__.pyR( s R4 c B s e Z d Z e d d � Z RS( u� “Push”-based encoder. :param encoding: An :class:`Encoding` object or a label string. :param errors: Type of error handling. See :func:`codecs.register`. :raises: :exc:`~exceptions.LookupError` for an unknown encoding label. .. method:: encode(input, final=False) :param input: An Unicode string. :param final: Indicate that no more input is available. Must be :obj:`True` if this is the last call. :returns: A byte string. u strictc C s( t | � } | j j | � j | _ d S( N( R R t incrementalencoderR ( R R R" ( ( sE /usr/lib/python2.7/site-packages/pip/_vendor/webencodings/__init__.pyR T s ( R R R R' R ( ( ( sE /usr/lib/python2.7/site-packages/pip/_vendor/webencodings/__init__.pyR4 C s ( R t __future__R R t labelsR t VERSIONR R R R R t objectR R' R% R& R R R R- R) R6 R5 R( R4 ( ( ( sE /usr/lib/python2.7/site-packages/pip/_vendor/webencodings/__init__.pyt <module> s4 3
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