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_iter_encodedr" s+ � �� ��� �d�C� ��+�+�-� ��J� �s �02c � � � e Zd ZU dZdZdZdZded< d) d*� fd�
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�Zd4d�Z eeed�� Zd5d�Zd/d6d�Zd7d�Zd8d�Zed9d�� Zed9d�� Zd7d�Zd:d�Zd� Z d7d�Z d;d�Z d<d �Z d=d �Z d>d �Z!e"Z#ed?d �� Z"ej d@dAd �� Z$ej d@dBd!�� Z$dCdBd"�Z$e%dDd#�� Z&dEd$�Z'dFd%�Z( dGd&�Z) dH dId'�Z*dCdJd(�Z+� xZ,S )Kr a� Represents an outgoing WSGI HTTP response with body, status, and
headers. Has properties and methods for using the functionality
defined by various HTTP specs.
The response body is flexible to support different use cases. The
simple form is passing bytes, or a string which will be encoded as
UTF-8. Passing an iterable of bytes or strings makes this a
streaming response. A generator is particularly useful for building
a CSV file in memory or using SSE (Server Sent Events). A file-like
object is also iterable, although the
:func:`~werkzeug.utils.send_file` helper should be used in that
case.
The response object is itself a WSGI application callable. When
called (:meth:`__call__`) with ``environ`` and ``start_response``,
it will pass its status and headers to ``start_response`` then
return its body as an iterable.
.. code-block:: python
from werkzeug.wrappers.response import Response
def index():
return Response("Hello, World!")
def application(environ, start_response):
path = environ.get("PATH_INFO") or "/"
if path == "/":
response = index()
else:
response = Response("Not Found", status=404)
return response(environ, start_response)
:param response: The data for the body of the response. A string or
bytes, or tuple or list of strings or bytes, for a fixed-length
response, or any other iterable of strings or bytes for a
streaming response. Defaults to an empty body.
:param status: The status code for the response. Either an int, in
which case the default status message is added, or a string in
the form ``{code} {message}``, like ``404 Not Found``. Defaults
to 200.
:param headers: A :class:`~werkzeug.datastructures.Headers` object,
or a list of ``(key, value)`` tuples that will be converted to a
``Headers`` object.
:param mimetype: The mime type (content type without charset or
other parameters) of the response. If the value starts with
``text/`` (or matches some other special cases), the charset
will be added to create the ``content_type``.
:param content_type: The full content type of the response.
Overrides building the value from ``mimetype``.
:param direct_passthrough: Pass the response body directly through
as the WSGI iterable. This can be used when the body is a binary
file or other iterator of bytes, to skip some unnecessary
checks. Use :func:`~werkzeug.utils.send_file` instead of setting
this manually.
.. versionchanged:: 2.1
Old ``BaseResponse`` and mixin classes were removed.
.. versionchanged:: 2.0
Combine ``BaseResponse`` and mixins into a single ``Response``
class.
.. versionchanged:: 0.5
The ``direct_passthrough`` parameter was added.
TFz#t.Iterable[str] | t.Iterable[bytes]�responsec �� �� t �| � ||||�� || _ g | _ |�g | _ y t |t t t f� r| j |� y || _ y )N)�status�headers�mimetype� content_type)
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:� �M�M�(� #� $�D�M� c �< � | j j |� |S )a Adds a function to the internal list of functions that should
be called as part of closing down the response. Since 0.7 this
function also returns the function that was passed so that this
can be used as a decorator.
.. versionadded:: 0.6
)r- �append�r1 �funcs r! �
call_on_closezResponse.call_on_close� s � �
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�<M�I��4��:�&�&�'�q�� �2�d�k�k�]�"�E�Er3 c �x � t |t � s"|� t d� �ddlm} t |||� � }| |_ |S )a� Enforce that the WSGI response is a response object of the current
type. Werkzeug will use the :class:`Response` internally in many
situations like the exceptions. If you call :meth:`get_response` on an
exception you will get back a regular :class:`Response` object, even
if you are using a custom subclass.
This method can enforce a given response type, and it will also
convert arbitrary WSGI callables into response objects if an environ
is provided::
# convert a Werkzeug response object into an instance of the
# MyResponseClass subclass.
response = MyResponseClass.force_type(response)
# convert any WSGI application into a response object
response = MyResponseClass.force_type(response, environ)
This is especially useful if you want to post-process responses in
the main dispatcher and use functionality provided by your subclass.
Keep in mind that this will modify response objects in place if
possible!
:param response: a response object or wsgi application.
:param environ: a WSGI environment object.
:return: a response object.
zHcannot convert WSGI application into response objects without an environr �� run_wsgi_app)r r � TypeError�testrI r2 )�clsr$ �environrI s r! �
force_typezResponse.force_type� sH � �> �(�H�-��� �2�� �
,� � �h��!@�A�H� ����r3 c �( � ddl m} | ||||� � S )a� Create a new response object from an application output. This
works best if you pass it an application that returns a generator all
the time. Sometimes applications may use the `write()` callable
returned by the `start_response` function. This tries to resolve such
edge cases automatically. But if you don't get the expected output
you should set `buffered` to `True` which enforces buffering.
:param app: the WSGI application to execute.
:param environ: the WSGI environment to execute against.
:param buffered: set to `True` to enforce buffering.
:return: a response object.
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this property the response iterable is encoded and flattened. This
can lead to unwanted behavior if you stream big data.
This behavior can be disabled by setting
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If `as_text` is set to `True` the return value will be a decoded
string.
.. versionadded:: 0.9
r3 )�_ensure_sequence�joinrA �decode)r1 rV �rvs r! rW zResponse.get_data s; � �
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bytes. If a string is set it's encoded to the charset of the
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.. versionadded:: 0.9
�Content-LengthN)r r r r$ � automatically_set_content_lengthr@ r' �r1 �values r! r0 zResponse.set_data! sG � � �e�S� !��L�L�N�E� ���
� � 0� 0�-0��U��_�D�L�L�)� *� 1r3 z>A descriptor that calls :meth:`get_data` and :meth:`set_data`.)�docc � � | j � t d� | j � D � � S # t $ r Y yw xY w)z<Returns the content length if available or `None` otherwise.Nc 3 �2 K � | ] }t |� �� � y �wr �r@ ��.0�xs r! � <genexpr>z4Response.calculate_content_length.<locals>.<genexpr>: s � �� �7�#6�a�3�q�6�#6�� �)rZ � RuntimeErrorr> rA �r1 s r! �calculate_content_lengthz!Response.calculate_content_length4 sC � � � � !� !� #� �7�4�#4�#4�#6�7�7�7�� � �� �s �2 � >�>c � � | j r7|r4t | j t � st | j � | _ y| j r t d� �| j s t d� �| j � y)z�This method can be called by methods that need a sequence. If
`mutable` is true, it will also ensure that the response sequence
is a standard Python list.
.. versionadded:: 0.6
Nz]Attempted implicit sequence conversion but the response object is in direct passthrough mode.z�The response object required the iterable to be a sequence, but the implicit conversion was disabled. Call make_sequence() yourself.)r= r r$ �listr, rl � implicit_sequence_conversion�
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��� r3 c � � | j sJt | j dd� }t | j � � | _ |�| j |� yyy)aC Converts the response iterator in a list. By default this happens
automatically if required. If `implicit_sequence_conversion` is
disabled, this method is not automatically called and some properties
might raise exceptions. This also encodes all the items.
.. versionadded:: 0.6
�closeN)r= �getattrr$ rp rA r8 )r1 ru s r! rr zResponse.make_sequenceU sT � � � � � �D�M�M�7�D�9�E� ��!2�!2�!4� 5�D�M�� ��"�"�5�)� !�
r3 c �, � t | j � S )a Iter the response encoded with the encoding of the response.
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value of this method is used as application iterator unless
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)r" r$ rm s r! rA zResponse.iter_encodedf s � � �T�]�]�+�+r3 c �Z � t | j � y# t t f$ r Y yw xY w)a� If the response is streamed (the response is not an iterable with
a length information) this property is `True`. In this case streamed
means that there is no information about the number of iterations.
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This is useful for checking before applying some sort of post
filtering that should not take place for streamed responses.
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.. versionadded:: 0.6
)r r$ �tuplerp rm s r! r= zResponse.is_sequence� s � � �$�-�-�%�� �7�7r3 c � � t | j d� r| j j � | j D ] } |� � y)z�Close the wrapped response if possible. You can also use the object
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.. versionadded:: 0.9
Can now be used in a with statement.
ru N)�hasattrr$ ru r- r6 s r! ru zResponse.close� s5 � � �4�=�=�'� *� �M�M� � � !��N�N�D� �F� #r3 c � � | S r rT rm s r! � __enter__zResponse.__enter__� s � �� r3 c �$ � | j � y r )ru )r1 �exc_type� exc_value�tbs r! �__exit__zResponse.__exit__� s � � �
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� r3 c �� � t | j � � | _ t t t t | j � � � | j d< | j � y)aM Make the response object ready to be pickled. Does the
following:
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:attr:`implicity_sequence_conversion` and
:attr:`direct_passthrough`.
* Set the ``Content-Length`` header.
* Generate an ``ETag`` header if one is not already set.
.. versionchanged:: 2.1
Removed the ``no_etag`` parameter.
.. versionchanged:: 2.0
An ``ETag`` header is always added.
.. versionchanged:: 0.6
The ``Content-Length`` header is set.
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k s0n t d� | j � D � � }t |� |d < |S )ak This is automatically called right before the response is started
and returns headers modified for the given environment. It returns a
copy of the headers from the response with some modifications applied
if necessary.
For example the location header (if present) is joined with the root
URL of the environment. Also the content length is automatically set
to zero here for certain status codes.
.. versionchanged:: 0.6
Previously that function was called `fix_headers` and modified
the response object in place. Also since 0.6, IRIs in location
and content-location headers are handled properly.
Also starting with 0.6, Werkzeug will attempt to set the content
length if it is able to figure it out on its own. This is the
case if all the strings in the response iterable are already
encoded and the iterable is buffered.
:param environ: the WSGI environment of the request.
:return: returns a new :class:`~werkzeug.datastructures.Headers`
object.
N�locationzcontent-location�content-lengthT)�strip_querystring�LocationzContent-Location�d �� �� r_ �0 �r� r� c 3 �2 K � | ] }t |� �� � y �wr rf rg s r! rj z,Response.get_wsgi_headers.<locals>.<genexpr> s � �� � E�1D�A��Q��1D�rk )r r' � status_code�lowerr �autocorrect_location_headerr r �remover r` r= r> rA r ) r1 rM r' r� �content_location�content_lengthr& �keyrb �ikey� current_urls r! �get_wsgi_headerszResponse.get_wsgi_headers� s` � �0 �$�,�,�'�� #��'+��+/���!�!��
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� S )a Returns the application iterator for the given environ. Depending
on the request method and the current status code the return value
might be an empty response rather than the one from the response.
If the request method is `HEAD` or the status code is in a range
where the HTTP specification requires an empty response, an empty
iterable is returned.
.. versionadded:: 0.6
:param environ: the WSGI environment of the request.
:return: a response iterable.
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the third the list of headers. The response returned is created
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method in the WSGI environment is ``'HEAD'`` the response will
be empty and only the headers and status code will be present.
.. versionadded:: 0.6
:param environ: the WSGI environment of the request.
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| j sy| j � } | j j |� S # t $ r |s� Y yw xY w)a� Parse :attr:`data` as JSON. Useful during testing.
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A c � � t | � S )z+The response iterable as write-only stream.)�ResponseStreamrm s r! �streamzResponse.streamu s � � �d�#�#r3 c �\ � | j dk( r t | j ||� | _ yy)z8Wrap existing Response in case of Range Request context.�� N)r� r r$ )r1 �start�lengths r! �_wrap_range_responsez Response._wrap_range_responsez s) � � � � �s� "� )�$�-�-��� G�D�M� #r3 c � � d|vxsC t || j j d� d| j j d� d�� xr d|v S )z�Return ``True`` if `Range` header is present and if underlying
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| j |d |� y) a. Handle Range Request related headers (RFC7233). If `Accept-Ranges`
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:raises: :class:`~werkzeug.exceptions.RequestedRangeNotSatisfiable`
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.. versionchanged:: 2.0
Returns ``False`` if the length is 0.
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ab Make the response conditional to the request. This method works
best if an etag was defined for the response already. The `add_etag`
method can be used to do that. If called without etag just the date
header is set.
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anything but GET or HEAD.
For optimal performance when handling range requests, it's recommended
that your response data object implements `seekable`, `seek` and `tell`
methods as described by :py:class:`io.IOBase`. Objects returned by
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It does not remove the body of the response because that's something
the :meth:`__call__` function does for us automatically.
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but modifies the object in-place.
:param request_or_environ: a request object or WSGI environment to be
used to make the response conditional
against.
:param accept_ranges: This parameter dictates the value of
`Accept-Ranges` header. If ``False`` (default),
the header is not set. If ``True``, it will be set
to ``"bytes"``. If it's a string, it will use this
value.
:param complete_length: Will be used only in valid Range Requests.
It will set `Content-Range` complete length
value and compute `Content-Length` real value.
This parameter is mandatory for successful
Range Requests completion.
:raises: :class:`~werkzeug.exceptions.RequestedRangeNotSatisfiable`
if `Range` header could not be parsed or satisfied.
.. versionchanged:: 2.0
Range processing is skipped if length is 0 instead of
raising a 416 Range Not Satisfiable error.
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