view MoinMoin/support/werkzeug/__init__.py @ 6111:1fdd537e9d83

SubProcess: reimplement exec_cmd subclassing Popen and overriding some methods isn't pretty. the code we have was written for py 2.4 or so and the py 2.7 Popen looked quite different. this way with the timer should be less problematic.
author Thomas Waldmann <tw AT waldmann-edv DOT de>
date Tue, 06 Sep 2016 04:39:28 +0200
parents 9f12f41504fc
children 7f12cf241d5e
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# -*- coding: utf-8 -*-
"""
    werkzeug
    ~~~~~~~~

    Werkzeug is the Swiss Army knife of Python web development.

    It provides useful classes and functions for any WSGI application to make
    the life of a python web developer much easier.  All of the provided
    classes are independent from each other so you can mix it with any other
    library.


    :copyright: (c) 2014 by the Werkzeug Team, see AUTHORS for more details.
    :license: BSD, see LICENSE for more details.
"""
from types import ModuleType
import sys

from werkzeug._compat import iteritems

# the version.  Usually set automatically by a script.
__version__ = '0.11.11'


# This import magic raises concerns quite often which is why the implementation
# and motivation is explained here in detail now.
#
# The majority of the functions and classes provided by Werkzeug work on the
# HTTP and WSGI layer.  There is no useful grouping for those which is why
# they are all importable from "werkzeug" instead of the modules where they are
# implemented.  The downside of that is, that now everything would be loaded at
# once, even if unused.
#
# The implementation of a lazy-loading module in this file replaces the
# werkzeug package when imported from within.  Attribute access to the werkzeug
# module will then lazily import from the modules that implement the objects.


# import mapping to objects in other modules
all_by_module = {
    'werkzeug.debug': ['DebuggedApplication'],
    'werkzeug.local': ['Local', 'LocalManager', 'LocalProxy', 'LocalStack',
                       'release_local'],
    'werkzeug.serving': ['run_simple'],
    'werkzeug.test': ['Client', 'EnvironBuilder', 'create_environ',
                      'run_wsgi_app'],
    'werkzeug.testapp': ['test_app'],
    'werkzeug.exceptions': ['abort', 'Aborter'],
    'werkzeug.urls': ['url_decode', 'url_encode', 'url_quote',
                      'url_quote_plus', 'url_unquote', 'url_unquote_plus',
                      'url_fix', 'Href', 'iri_to_uri', 'uri_to_iri'],
    'werkzeug.formparser': ['parse_form_data'],
    'werkzeug.utils': ['escape', 'environ_property', 'append_slash_redirect',
                       'redirect', 'cached_property', 'import_string',
                       'dump_cookie', 'parse_cookie', 'unescape',
                       'format_string', 'find_modules', 'header_property',
                       'html', 'xhtml', 'HTMLBuilder', 'validate_arguments',
                       'ArgumentValidationError', 'bind_arguments',
                       'secure_filename'],
    'werkzeug.wsgi': ['get_current_url', 'get_host', 'pop_path_info',
                      'peek_path_info', 'SharedDataMiddleware',
                      'DispatcherMiddleware', 'ClosingIterator', 'FileWrapper',
                      'make_line_iter', 'LimitedStream', 'responder',
                      'wrap_file', 'extract_path_info'],
    'werkzeug.datastructures': ['MultiDict', 'CombinedMultiDict', 'Headers',
                                'EnvironHeaders', 'ImmutableList',
                                'ImmutableDict', 'ImmutableMultiDict',
                                'TypeConversionDict',
                                'ImmutableTypeConversionDict', 'Accept',
                                'MIMEAccept', 'CharsetAccept',
                                'LanguageAccept', 'RequestCacheControl',
                                'ResponseCacheControl', 'ETags', 'HeaderSet',
                                'WWWAuthenticate', 'Authorization',
                                'FileMultiDict', 'CallbackDict', 'FileStorage',
                                'OrderedMultiDict', 'ImmutableOrderedMultiDict'
                                ],
    'werkzeug.useragents':  ['UserAgent'],
    'werkzeug.http': ['parse_etags', 'parse_date', 'http_date', 'cookie_date',
                      'parse_cache_control_header', 'is_resource_modified',
                      'parse_accept_header', 'parse_set_header', 'quote_etag',
                      'unquote_etag', 'generate_etag', 'dump_header',
                      'parse_list_header', 'parse_dict_header',
                      'parse_authorization_header',
                      'parse_www_authenticate_header', 'remove_entity_headers',
                      'is_entity_header', 'remove_hop_by_hop_headers',
                      'parse_options_header', 'dump_options_header',
                      'is_hop_by_hop_header', 'unquote_header_value',
                      'quote_header_value', 'HTTP_STATUS_CODES'],
    'werkzeug.wrappers': ['BaseResponse', 'BaseRequest', 'Request', 'Response',
                          'AcceptMixin', 'ETagRequestMixin',
                          'ETagResponseMixin', 'ResponseStreamMixin',
                          'CommonResponseDescriptorsMixin', 'UserAgentMixin',
                          'AuthorizationMixin', 'WWWAuthenticateMixin',
                          'CommonRequestDescriptorsMixin'],
    'werkzeug.security': ['generate_password_hash', 'check_password_hash'],
    # the undocumented easteregg ;-)
    'werkzeug._internal': ['_easteregg']
}

# modules that should be imported when accessed as attributes of werkzeug
attribute_modules = frozenset(['exceptions', 'routing', 'script'])


object_origins = {}
for module, items in iteritems(all_by_module):
    for item in items:
        object_origins[item] = module


class module(ModuleType):

    """Automatically import objects from the modules."""

    def __getattr__(self, name):
        if name in object_origins:
            module = __import__(object_origins[name], None, None, [name])
            for extra_name in all_by_module[module.__name__]:
                setattr(self, extra_name, getattr(module, extra_name))
            return getattr(module, name)
        elif name in attribute_modules:
            __import__('werkzeug.' + name)
        return ModuleType.__getattribute__(self, name)

    def __dir__(self):
        """Just show what we want to show."""
        result = list(new_module.__all__)
        result.extend(('__file__', '__path__', '__doc__', '__all__',
                       '__docformat__', '__name__', '__path__',
                       '__package__', '__version__'))
        return result

# keep a reference to this module so that it's not garbage collected
old_module = sys.modules['werkzeug']


# setup the new module and patch it into the dict of loaded modules
new_module = sys.modules['werkzeug'] = module('werkzeug')
new_module.__dict__.update({
    '__file__':         __file__,
    '__package__':      'werkzeug',
    '__path__':         __path__,
    '__doc__':          __doc__,
    '__version__':      __version__,
    '__all__':          tuple(object_origins) + tuple(attribute_modules),
    '__docformat__':    'restructuredtext en'
})


# Due to bootstrapping issues we need to import exceptions here.
# Don't ask :-(
__import__('werkzeug.exceptions')