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from repoze.bfg.compat import wraps
from repoze.bfg.traversal import quote_path_segment
def wsgiapp(wrapped):
""" Decorator to turn a WSGI application into a :mod:`repoze.bfg`
:term:`view callable`. This decorator differs from the
:func:`repoze.bfg.wsgi.wsgiapp2` decorator inasmuch as fixups of
``PATH_INFO`` and ``SCRIPT_NAME`` within the WSGI environment *are
not* performed before the application is invoked.
E.g., the following in a ``views.py`` module::
@wsgiapp
def hello_world(environ, start_response):
body = 'Hello world'
start_response('200 OK', [ ('Content-Type', 'text/plain'),
('Content-Length', len(body)) ] )
return [body]
Allows the following ZCML view declaration to be made::
<view
view=".views.hello_world"
name="hello_world.txt"
/>
Or the following call to
:meth:`repoze.bfg.configuration.Configurator.add_view`::
from views import hello_world
config.add_view(hello_world, name='hello_world.txt')
The ``wsgiapp`` decorator will convert the result of the WSGI
application to a :term:`Response` and return it to
:mod:`repoze.bfg` as if the WSGI app were a :mod:`repoze.bfg`
view.
"""
def decorator(context, request):
return request.get_response(wrapped)
return wraps(wrapped)(decorator) # grokkability
def wsgiapp2(wrapped):
""" Decorator to turn a WSGI application into a :mod:`repoze.bfg`
view callable. This decorator differs from the
:func:`repoze.bfg.wsgi.wsgiapp` decorator inasmuch as fixups of
``PATH_INFO`` and ``SCRIPT_NAME`` within the WSGI environment
*are* performed before the application is invoked.
E.g. the following in a ``views.py`` module::
@wsgiapp2
def hello_world(environ, start_response):
body = 'Hello world'
start_response('200 OK', [ ('Content-Type', 'text/plain'),
('Content-Length', len(body)) ] )
return [body]
Allows the following ZCML view declaration to be made::
<view
view=".views.hello_world"
name="hello_world.txt"
/>
Or the following call to
:meth:`repoze.bfg.configuration.Configurator.add_view`::
from views import hello_world
config.add_view(hello_world, name='hello_world.txt')
The ``wsgiapp2`` decorator will convert the result of the WSGI
application to a Response and return it to :mod:`repoze.bfg` as if
the WSGI app were a :mod:`repoze.bfg` view. The ``SCRIPT_NAME``
and ``PATH_INFO`` values present in the WSGI environment are fixed
up before the application is invoked. """
def decorator(context, request):
traversed = request.traversed
vroot_path = request.virtual_root_path or ()
view_name = request.view_name
subpath = request.subpath or ()
script_tuple = traversed[len(vroot_path):]
script_list = [ quote_path_segment(name) for name in script_tuple ]
if view_name:
script_list.append(quote_path_segment(view_name))
script_name = '/' + '/'.join(script_list)
path_list = [ quote_path_segment(name) for name in subpath ]
path_info = '/' + '/'.join(path_list)
request.environ['PATH_INFO'] = path_info
script_name = request.environ['SCRIPT_NAME'] + script_name
if script_name.endswith('/'):
script_name = script_name[:-1]
request.environ['SCRIPT_NAME'] = script_name
return request.get_response(wrapped)
return wraps(wrapped)(decorator) # grokkability
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