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 d Z d „  Z d	 „  Z d e d
 „ Z d S(   s-   Utilities for dealing with streamed requests.iÿÿÿÿNi   (   t
   exceptionss   "[^"\\]*(?:\\.[^"\\]*)*"s*   ;\s*(%s|[^\s;=]+)\s*(?:=\s*(%s|[^;]+))?\s*i   c         C   sP   xI t  j |  ƒ D]8 } | j ƒ  \ } } | d k r t j j | ƒ d Sq Wd  S(   Nt   filenamei   (   t   _OPTION_HEADER_PIECE_REt   finditert   groupst   ost   patht   splitt   None(   t   content_dispositiont   matcht   kt   v(    (    s[   /data/av2000/b2b/venv/lib/python2.7/site-packages/requests_toolbelt/downloadutils/stream.pyt   _get_filename   s
    c         C   s‰   | o t  j j | ƒ } | r. | r. | } nW t |  j j d d ƒ ƒ } | sa t j d ƒ ‚ n  | r t  j j | | ƒ } n | } | S(   sõ  
    Given a response and a path, return a file path for a download.

    If a ``path`` parameter is a directory, this function will parse the
    ``Content-Disposition`` header on the response to determine the name of the
    file as reported by the server, and return a file path in the specified
    directory.

    If ``path`` is empty or None, this function will return a path relative
    to the process' current working directory.

    If path is a full file path, return it.

    :param response: A Response object from requests
    :type response: requests.models.Response
    :param str path: Directory or file path.
    :returns: full file path to download as
    :rtype: str
    :raises: :class:`requests_toolbelt.exceptions.StreamingError`
    s   content-dispositiont    s'   No filename given to stream response to(	   R   R   t   isdirR   t   headerst   gett   exct   StreamingErrort   join(   t   responseR   t   path_is_dirt   filepatht   response_filename(    (    s[   /data/av2000/b2b/venv/lib/python2.7/site-packages/requests_toolbelt/downloadutils/stream.pyt   get_download_file_path   s    	c         C   sÞ   t  } d } d } | rW t t | d d ƒ t j ƒ rW t } | } t | d d ƒ } nF t |  | ƒ } t j	 j
 | ƒ rŽ t j d | ƒ ‚ n  t | d ƒ } x' |  j d | ƒ D] } | j | ƒ q° W| sÚ | j ƒ  n  | S(   s7  Stream a response body to the specified file.

    Either use the ``path`` provided or use the name provided in the
    ``Content-Disposition`` header.

    .. warning::

        If you pass this function an open file-like object as the ``path``
        parameter, the function will not close that file for you.

    .. warning::

        This function will not automatically close the response object
        passed in as the ``response`` parameter.

    If a ``path`` parameter is a directory, this function will parse the
    ``Content-Disposition`` header on the response to determine the name of the
    file as reported by the server, and return a file path in the specified
    directory. If no ``path`` parameter is supplied, this function will default
    to the process' current working directory.

    .. code-block:: python

        import requests
        from requests_toolbelt import exceptions
        from requests_toolbelt.downloadutils import stream

        r = requests.get(url, stream=True)
        try:
            filename = stream.stream_response_to_file(r)
        except exceptions.StreamingError as e:
            # The toolbelt could not find the filename in the
            # Content-Disposition
            print(e.message)

    You can also specify the filename as a string. This will be passed to
    the built-in :func:`open` and we will read the content into the file.

    .. code-block:: python

        import requests
        from requests_toolbelt.downloadutils import stream

        r = requests.get(url, stream=True)
        filename = stream.stream_response_to_file(r, path='myfile')

    If the calculated download file path already exists, this function will
    raise a StreamingError.

    Instead, if you want to manage the file object yourself, you need to
    provide either a :class:`io.BytesIO` object or a file opened with the
    `'b'` flag. See the two examples below for more details.

    .. code-block:: python

        import requests
        from requests_toolbelt.downloadutils import stream

        with open('myfile', 'wb') as fd:
            r = requests.get(url, stream=True)
            filename = stream.stream_response_to_file(r, path=fd)

        print('{0} saved to {1}'.format(url, filename))

    .. code-block:: python

        import io
        import requests
        from requests_toolbelt.downloadutils import stream

        b = io.BytesIO()
        r = requests.get(url, stream=True)
        filename = stream.stream_response_to_file(r, path=b)
        assert filename is None

    :param response: A Response object from requests
    :type response: requests.models.Response
    :param path: *(optional)*, Either a string with the path to the location
        to save the response content, or a file-like object expecting bytes.
    :type path: :class:`str`, or object with a :meth:`write`
    :param int chunksize: (optional), Size of chunk to attempt to stream
        (default 512B).
    :returns: The name of the file, if one can be determined, else None
    :rtype: str
    :raises: :class:`requests_toolbelt.exceptions.StreamingError`
    t   writet   names   File already exists: %st   wbt
   chunk_sizeN(   t   FalseR   t
   isinstancet   getattrt   collectionst   Callablet   TrueR   R   R   t   existsR   R   t   opent   iter_contentR   t   close(   R   R   t	   chunksizet
   pre_openedt   fdR   t   chunk(    (    s[   /data/av2000/b2b/venv/lib/python2.7/site-packages/requests_toolbelt/downloadutils/stream.pyt   stream_response_to_fileG   s     W$(   t   __doc__R!   t   os.pathR   t   reR   R    R   t   _QUOTED_STRING_REt   compileR   t   _DEFAULT_CHUNKSIZER   R   R   R,   (    (    (    s[   /data/av2000/b2b/venv/lib/python2.7/site-packages/requests_toolbelt/downloadutils/stream.pyt   <module>   s   			+