U ˀX@sddZddlZddlZddlZddlmZdZe deefZ dZ dd Z d d Z de fd d ZdS)z-Utilities for dealing with streamed requests.N) exceptionsz"[^"\\]*(?:\\.[^"\\]*)*"z*;\s*(%s|[^\s;=]+)\s*(?:=\s*(%s|[^;]+))?\s*icCs<t|D],}|\}}|dkr tj|dSq dS)Nfilename)_OPTION_HEADER_PIECE_REfinditergroupsospathsplit)Zcontent_dispositionmatchkvrH/usr/lib/python3/dist-packages/requests_toolbelt/downloadutils/stream.py _get_filenames  rcCsZ|otj|}|r|s|}n8t|jdd}|s>td|rRtj||}n|}|S)a 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` zcontent-dispositionz'No filename given to stream response to) r r isdirrZheadersgetexcStreamingErrorjoin)responser Z path_is_dirfilepathZresponse_filenamerrrget_download_file_paths  rcCsd}d}d}|r:tt|ddtjr:d}|}t|dd}n.t||}tj|r^t d|t |d}|j |dD]}| |qt|s| |S) a7 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` FNwriteTnamezFile already exists: %swb)Z chunk_size) isinstancegetattr collectionsCallablerr r existsrropenZ iter_contentrclose)rr Z chunksizeZ pre_openedfdrchunkrrrstream_response_to_fileGs W    r')__doc__r os.pathr rerrrZ_QUOTED_STRING_REcompilerZ_DEFAULT_CHUNKSIZErrr'rrrrs  +