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authorJames Taylor <user234683@users.noreply.github.com>2019-09-06 16:31:13 -0700
committerJames Taylor <user234683@users.noreply.github.com>2019-09-06 16:31:13 -0700
commit3d57e14df7ba5f14a634295caf3b2e60da50bfe2 (patch)
tree4903bcb79a49ad714a1a9129765b9545405c9978 /python/flask/wrappers.py
parentac32b24b2a011292b704a3f27e8fd08a7ae9424b (diff)
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Remove windows python distribution from repo and add requirements.txt
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diff --git a/python/flask/wrappers.py b/python/flask/wrappers.py
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-# -*- coding: utf-8 -*-
-"""
- flask.wrappers
- ~~~~~~~~~~~~~~
-
- Implements the WSGI wrappers (request and response).
-
- :copyright: © 2010 by the Pallets team.
- :license: BSD, see LICENSE for more details.
-"""
-
-from werkzeug.exceptions import BadRequest
-from werkzeug.wrappers import Request as RequestBase, Response as ResponseBase
-
-from flask import json
-from flask.globals import current_app
-
-
-class JSONMixin(object):
- """Common mixin for both request and response objects to provide JSON
- parsing capabilities.
-
- .. versionadded:: 1.0
- """
-
- _cached_json = (Ellipsis, Ellipsis)
-
- @property
- def is_json(self):
- """Check if the mimetype indicates JSON data, either
- :mimetype:`application/json` or :mimetype:`application/*+json`.
-
- .. versionadded:: 0.11
- """
- mt = self.mimetype
- return (
- mt == 'application/json'
- or (mt.startswith('application/')) and mt.endswith('+json')
- )
-
- @property
- def json(self):
- """This will contain the parsed JSON data if the mimetype indicates
- JSON (:mimetype:`application/json`, see :meth:`is_json`), otherwise it
- will be ``None``.
- """
- return self.get_json()
-
- def _get_data_for_json(self, cache):
- return self.get_data(cache=cache)
-
- def get_json(self, force=False, silent=False, cache=True):
- """Parse and return the data as JSON. If the mimetype does not
- indicate JSON (:mimetype:`application/json`, see
- :meth:`is_json`), this returns ``None`` unless ``force`` is
- true. If parsing fails, :meth:`on_json_loading_failed` is called
- and its return value is used as the return value.
-
- :param force: Ignore the mimetype and always try to parse JSON.
- :param silent: Silence parsing errors and return ``None``
- instead.
- :param cache: Store the parsed JSON to return for subsequent
- calls.
- """
- if cache and self._cached_json[silent] is not Ellipsis:
- return self._cached_json[silent]
-
- if not (force or self.is_json):
- return None
-
- data = self._get_data_for_json(cache=cache)
-
- try:
- rv = json.loads(data)
- except ValueError as e:
- if silent:
- rv = None
- if cache:
- normal_rv, _ = self._cached_json
- self._cached_json = (normal_rv, rv)
- else:
- rv = self.on_json_loading_failed(e)
- if cache:
- _, silent_rv = self._cached_json
- self._cached_json = (rv, silent_rv)
- else:
- if cache:
- self._cached_json = (rv, rv)
-
- return rv
-
- def on_json_loading_failed(self, e):
- """Called if :meth:`get_json` parsing fails and isn't silenced. If
- this method returns a value, it is used as the return value for
- :meth:`get_json`. The default implementation raises a
- :class:`BadRequest` exception.
-
- .. versionchanged:: 0.10
- Raise a :exc:`BadRequest` error instead of returning an error
- message as JSON. If you want that behavior you can add it by
- subclassing.
-
- .. versionadded:: 0.8
- """
- if current_app is not None and current_app.debug:
- raise BadRequest('Failed to decode JSON object: {0}'.format(e))
-
- raise BadRequest()
-
-
-class Request(RequestBase, JSONMixin):
- """The request object used by default in Flask. Remembers the
- matched endpoint and view arguments.
-
- It is what ends up as :class:`~flask.request`. If you want to replace
- the request object used you can subclass this and set
- :attr:`~flask.Flask.request_class` to your subclass.
-
- The request object is a :class:`~werkzeug.wrappers.Request` subclass and
- provides all of the attributes Werkzeug defines plus a few Flask
- specific ones.
- """
-
- #: The internal URL rule that matched the request. This can be
- #: useful to inspect which methods are allowed for the URL from
- #: a before/after handler (``request.url_rule.methods``) etc.
- #: Though if the request's method was invalid for the URL rule,
- #: the valid list is available in ``routing_exception.valid_methods``
- #: instead (an attribute of the Werkzeug exception :exc:`~werkzeug.exceptions.MethodNotAllowed`)
- #: because the request was never internally bound.
- #:
- #: .. versionadded:: 0.6
- url_rule = None
-
- #: A dict of view arguments that matched the request. If an exception
- #: happened when matching, this will be ``None``.
- view_args = None
-
- #: If matching the URL failed, this is the exception that will be
- #: raised / was raised as part of the request handling. This is
- #: usually a :exc:`~werkzeug.exceptions.NotFound` exception or
- #: something similar.
- routing_exception = None
-
- @property
- def max_content_length(self):
- """Read-only view of the ``MAX_CONTENT_LENGTH`` config key."""
- if current_app:
- return current_app.config['MAX_CONTENT_LENGTH']
-
- @property
- def endpoint(self):
- """The endpoint that matched the request. This in combination with
- :attr:`view_args` can be used to reconstruct the same or a
- modified URL. If an exception happened when matching, this will
- be ``None``.
- """
- if self.url_rule is not None:
- return self.url_rule.endpoint
-
- @property
- def blueprint(self):
- """The name of the current blueprint"""
- if self.url_rule and '.' in self.url_rule.endpoint:
- return self.url_rule.endpoint.rsplit('.', 1)[0]
-
- def _load_form_data(self):
- RequestBase._load_form_data(self)
-
- # In debug mode we're replacing the files multidict with an ad-hoc
- # subclass that raises a different error for key errors.
- if (
- current_app
- and current_app.debug
- and self.mimetype != 'multipart/form-data'
- and not self.files
- ):
- from .debughelpers import attach_enctype_error_multidict
- attach_enctype_error_multidict(self)
-
-
-class Response(ResponseBase, JSONMixin):
- """The response object that is used by default in Flask. Works like the
- response object from Werkzeug but is set to have an HTML mimetype by
- default. Quite often you don't have to create this object yourself because
- :meth:`~flask.Flask.make_response` will take care of that for you.
-
- If you want to replace the response object used you can subclass this and
- set :attr:`~flask.Flask.response_class` to your subclass.
-
- .. versionchanged:: 1.0
- JSON support is added to the response, like the request. This is useful
- when testing to get the test client response data as JSON.
-
- .. versionchanged:: 1.0
-
- Added :attr:`max_cookie_size`.
- """
-
- default_mimetype = 'text/html'
-
- def _get_data_for_json(self, cache):
- return self.get_data()
-
- @property
- def max_cookie_size(self):
- """Read-only view of the :data:`MAX_COOKIE_SIZE` config key.
-
- See :attr:`~werkzeug.wrappers.BaseResponse.max_cookie_size` in
- Werkzeug's docs.
- """
- if current_app:
- return current_app.config['MAX_COOKIE_SIZE']
-
- # return Werkzeug's default when not in an app context
- return super(Response, self).max_cookie_size