bbf6d9b026
Bugfix for feeds
- removed categories related and up
- load new books now working
- category random now working
login page is free of non accessible elements
boolean custom column is vivible in UI
books with only with certain languages can be shown
book shelfs can be deleted from UI
Anonymous user view is more resticted
Added browse of series in sidebar
Dependencys in vendor folder are updated to newer versions (licencs files are now present)
Bugfix editing Authors names
Made upload on windows working
285 lines
10 KiB
Python
285 lines
10 KiB
Python
# -*- coding: utf-8 -*-
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"""
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werkzeug.contrib.wrappers
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~~~~~~~~~~~~~~~~~~~~~~~~~
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Extra wrappers or mixins contributed by the community. These wrappers can
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be mixed in into request objects to add extra functionality.
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Example::
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from werkzeug.wrappers import Request as RequestBase
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from werkzeug.contrib.wrappers import JSONRequestMixin
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class Request(RequestBase, JSONRequestMixin):
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pass
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Afterwards this request object provides the extra functionality of the
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:class:`JSONRequestMixin`.
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:copyright: (c) 2014 by the Werkzeug Team, see AUTHORS for more details.
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:license: BSD, see LICENSE for more details.
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"""
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import codecs
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try:
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from simplejson import loads
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except ImportError:
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from json import loads
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from werkzeug.exceptions import BadRequest
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from werkzeug.utils import cached_property
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from werkzeug.http import dump_options_header, parse_options_header
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from werkzeug._compat import wsgi_decoding_dance
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def is_known_charset(charset):
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"""Checks if the given charset is known to Python."""
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try:
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codecs.lookup(charset)
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except LookupError:
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return False
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return True
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class JSONRequestMixin(object):
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"""Add json method to a request object. This will parse the input data
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through simplejson if possible.
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:exc:`~werkzeug.exceptions.BadRequest` will be raised if the content-type
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is not json or if the data itself cannot be parsed as json.
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"""
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@cached_property
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def json(self):
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"""Get the result of simplejson.loads if possible."""
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if 'json' not in self.environ.get('CONTENT_TYPE', ''):
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raise BadRequest('Not a JSON request')
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try:
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return loads(self.data.decode(self.charset, self.encoding_errors))
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except Exception:
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raise BadRequest('Unable to read JSON request')
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class ProtobufRequestMixin(object):
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"""Add protobuf parsing method to a request object. This will parse the
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input data through `protobuf`_ if possible.
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:exc:`~werkzeug.exceptions.BadRequest` will be raised if the content-type
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is not protobuf or if the data itself cannot be parsed property.
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.. _protobuf: http://code.google.com/p/protobuf/
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"""
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#: by default the :class:`ProtobufRequestMixin` will raise a
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#: :exc:`~werkzeug.exceptions.BadRequest` if the object is not
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#: initialized. You can bypass that check by setting this
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#: attribute to `False`.
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protobuf_check_initialization = True
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def parse_protobuf(self, proto_type):
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"""Parse the data into an instance of proto_type."""
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if 'protobuf' not in self.environ.get('CONTENT_TYPE', ''):
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raise BadRequest('Not a Protobuf request')
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obj = proto_type()
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try:
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obj.ParseFromString(self.data)
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except Exception:
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raise BadRequest("Unable to parse Protobuf request")
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# Fail if not all required fields are set
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if self.protobuf_check_initialization and not obj.IsInitialized():
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raise BadRequest("Partial Protobuf request")
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return obj
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class RoutingArgsRequestMixin(object):
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"""This request mixin adds support for the wsgiorg routing args
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`specification`_.
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.. _specification: http://www.wsgi.org/wsgi/Specifications/routing_args
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"""
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def _get_routing_args(self):
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return self.environ.get('wsgiorg.routing_args', (()))[0]
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def _set_routing_args(self, value):
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if self.shallow:
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raise RuntimeError('A shallow request tried to modify the WSGI '
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'environment. If you really want to do that, '
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'set `shallow` to False.')
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self.environ['wsgiorg.routing_args'] = (value, self.routing_vars)
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routing_args = property(_get_routing_args, _set_routing_args, doc='''
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The positional URL arguments as `tuple`.''')
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del _get_routing_args, _set_routing_args
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def _get_routing_vars(self):
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rv = self.environ.get('wsgiorg.routing_args')
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if rv is not None:
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return rv[1]
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rv = {}
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if not self.shallow:
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self.routing_vars = rv
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return rv
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def _set_routing_vars(self, value):
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if self.shallow:
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raise RuntimeError('A shallow request tried to modify the WSGI '
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'environment. If you really want to do that, '
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'set `shallow` to False.')
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self.environ['wsgiorg.routing_args'] = (self.routing_args, value)
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routing_vars = property(_get_routing_vars, _set_routing_vars, doc='''
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The keyword URL arguments as `dict`.''')
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del _get_routing_vars, _set_routing_vars
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class ReverseSlashBehaviorRequestMixin(object):
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"""This mixin reverses the trailing slash behavior of :attr:`script_root`
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and :attr:`path`. This makes it possible to use :func:`~urlparse.urljoin`
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directly on the paths.
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Because it changes the behavior or :class:`Request` this class has to be
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mixed in *before* the actual request class::
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class MyRequest(ReverseSlashBehaviorRequestMixin, Request):
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pass
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This example shows the differences (for an application mounted on
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`/application` and the request going to `/application/foo/bar`):
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+---------------+-------------------+---------------------+
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| | normal behavior | reverse behavior |
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+===============+===================+=====================+
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| `script_root` | ``/application`` | ``/application/`` |
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+---------------+-------------------+---------------------+
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| `path` | ``/foo/bar`` | ``foo/bar`` |
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+---------------+-------------------+---------------------+
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"""
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@cached_property
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def path(self):
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"""Requested path as unicode. This works a bit like the regular path
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info in the WSGI environment but will not include a leading slash.
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"""
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path = wsgi_decoding_dance(self.environ.get('PATH_INFO') or '',
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self.charset, self.encoding_errors)
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return path.lstrip('/')
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@cached_property
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def script_root(self):
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"""The root path of the script includling a trailing slash."""
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path = wsgi_decoding_dance(self.environ.get('SCRIPT_NAME') or '',
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self.charset, self.encoding_errors)
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return path.rstrip('/') + '/'
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class DynamicCharsetRequestMixin(object):
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""""If this mixin is mixed into a request class it will provide
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a dynamic `charset` attribute. This means that if the charset is
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transmitted in the content type headers it's used from there.
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Because it changes the behavior or :class:`Request` this class has
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to be mixed in *before* the actual request class::
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class MyRequest(DynamicCharsetRequestMixin, Request):
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pass
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By default the request object assumes that the URL charset is the
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same as the data charset. If the charset varies on each request
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based on the transmitted data it's not a good idea to let the URLs
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change based on that. Most browsers assume either utf-8 or latin1
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for the URLs if they have troubles figuring out. It's strongly
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recommended to set the URL charset to utf-8::
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class MyRequest(DynamicCharsetRequestMixin, Request):
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url_charset = 'utf-8'
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.. versionadded:: 0.6
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"""
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#: the default charset that is assumed if the content type header
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#: is missing or does not contain a charset parameter. The default
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#: is latin1 which is what HTTP specifies as default charset.
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#: You may however want to set this to utf-8 to better support
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#: browsers that do not transmit a charset for incoming data.
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default_charset = 'latin1'
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def unknown_charset(self, charset):
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"""Called if a charset was provided but is not supported by
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the Python codecs module. By default latin1 is assumed then
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to not lose any information, you may override this method to
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change the behavior.
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:param charset: the charset that was not found.
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:return: the replacement charset.
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"""
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return 'latin1'
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@cached_property
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def charset(self):
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"""The charset from the content type."""
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header = self.environ.get('CONTENT_TYPE')
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if header:
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ct, options = parse_options_header(header)
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charset = options.get('charset')
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if charset:
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if is_known_charset(charset):
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return charset
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return self.unknown_charset(charset)
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return self.default_charset
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class DynamicCharsetResponseMixin(object):
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"""If this mixin is mixed into a response class it will provide
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a dynamic `charset` attribute. This means that if the charset is
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looked up and stored in the `Content-Type` header and updates
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itself automatically. This also means a small performance hit but
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can be useful if you're working with different charsets on
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responses.
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Because the charset attribute is no a property at class-level, the
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default value is stored in `default_charset`.
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Because it changes the behavior or :class:`Response` this class has
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to be mixed in *before* the actual response class::
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class MyResponse(DynamicCharsetResponseMixin, Response):
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pass
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.. versionadded:: 0.6
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"""
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#: the default charset.
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default_charset = 'utf-8'
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def _get_charset(self):
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header = self.headers.get('content-type')
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if header:
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charset = parse_options_header(header)[1].get('charset')
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if charset:
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return charset
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return self.default_charset
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def _set_charset(self, charset):
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header = self.headers.get('content-type')
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ct, options = parse_options_header(header)
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if not ct:
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raise TypeError('Cannot set charset if Content-Type '
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'header is missing.')
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options['charset'] = charset
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self.headers['Content-Type'] = dump_options_header(ct, options)
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charset = property(_get_charset, _set_charset, doc="""
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The charset for the response. It's stored inside the
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Content-Type header as a parameter.""")
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del _get_charset, _set_charset
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