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��ReS) � @ sP d Z d d l m Z d d l Z d d l m Z d Z d d d d d d d d i Z i Z d d � Z d d � Z d d � Z Gd d � d e � Z e d � Z e d � Z e d � Z d d d � Z d d � Z e d d d! � Z d d" d# � Z d$ d% � Z e d d& d' � Z d( d) � Z Gd* d+ � d+ e � Z Gd, d- � d- e � Z d S).a 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. � )�unicode_literalsN� )�LABELSz0.5.1z iso-8859-8-iz iso-8859-8zx-mac-cyrillicz mac-cyrillic� macintoshz mac-romanz windows-874�cp874c C s | j d � j � j d � S)a9 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' �utf8)�encode�lower�decode)�string� r ��/builddir/build/BUILDROOT/alt-python35-pip-20.2.4-5.el8.x86_64/opt/alt/python35/lib/python3.5/site-packages/pip/_vendor/webencodings/__init__.py� ascii_lower# s r 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 | <| 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. z Nzx-user-definedr )� codec_info) r �stripr �get�CACHE�x_user_definedr � PYTHON_NAMES�codecs�lookup�Encoding)�label�name�encodingr � python_namer r r r = s r c C s? t | d � r | St | � } | d k r; t d | � � | S)z� 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. r NzUnknown encoding label: %r)�hasattrr � LookupError)�encoding_or_labelr r r r � _get_encoding[ s r c @ s. e Z d Z d Z d d � Z d d � Z d S)r aO 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 )�selfr r r r r �__init__| s zEncoding.__init__c C s d | j S)Nz <Encoding %s>)r )r r r r �__repr__� s zEncoding.__repr__N)�__name__� __module__� __qualname__�__doc__r! r" r r r r r m s r zutf-8zutf-16lezutf-16be�replacec C sG t | � } t | � \ } } | p' | } | j j | | � d | f S)a� 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`. r )r � _detect_bomr r )�input�fallback_encoding�errors� bom_encodingr r r r r � s r c C ss | j d � r# t | d d � f S| j d � rF t | d d � f S| j d � ri t | d d � f Sd | f S)zBReturn (bom_encoding, input), with any BOM removed from the input.s ��� Ns ��s � )� startswith�_UTF16LE�_UTF16BE�UTF8)r) r r r r( � s r( �strictc C s t | � j j | | � d S)a; 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. r )r r r )r) r r+ r r r r � s r c C s4 t | | � } t | | � } t | � } | | f S)a� "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. )�IncrementalDecoder�_iter_decode_generator�next)r) r* r+ �decoder� generatorr r r r � iter_decode� s r9 c c s� | j } t | � } x� | D]; } | | � } | r | j d k sI t � | j V| VPq W| d d d �} | j d k s� t � | j V| r� | Vd Sx% | D] } | | � } | r� | Vq� W| d d d �} | r� | Vd S)zqReturn a generator that first yields the :obj:`Encoding`, then yields output chukns as Unicode strings. N� �finalT)r �iterr �AssertionError)r) r7 r �chunck�outputr r r r5 � s, r5 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. )�IncrementalEncoderr �_iter_encode_generator)r) r r+ r r r r � iter_encode� s rB c c sI x% | D] } | | � } | r | Vq W| d d d �} | rE | Vd S)N� r; Tr )r) r r> r? r r r rA s rA c @ s4 e Z d Z d Z d d d � Z d d d � Z d S) r4 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. r' c C s7 t | � | _ | | _ d | _ d | _ d | _ d S)Nr: )r �_fallback_encoding�_errors�_buffer�_decoderr )r r* r+ r r r r! s zIncrementalDecoder.__init__Fc C s� | j } | d k r" | | | � S| j | } t | � \ } } | d k r| t | � d k rs | rs | | _ d S| j } | j j | j � j } | | _ | | _ | | | � S)z�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. Nr. rC ) rG rF r( �lenrD r �incrementaldecoderrE r r )r r) r; r7 r r r r r ' s zIncrementalDecoder.decodeN)r# r$ r% r& r! r r r r r r4 s r4 c @ s( e Z d Z d Z e d d d � Z d S)r@ 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. r3 c C s( t | � } | j j | � j | _ d S)N)r r �incrementalencoderr )r r r+ r r r r! T s zIncrementalEncoder.__init__N)r# r$ r% r& r2 r! r r r r r@ C s r@ )r& � __future__r r �labelsr �VERSIONr r r r r �objectr r2 r0 r1 r r( r r9 r5 rB rA r4 r@ r r r r �<module> s2 3
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