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from webob import Response
def wsgiapp(wrapped):
""" Decorator to turn a WSGI application into a repoze.bfg view callable.
E.g.::
@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 view declaration to be made::
<bfg:view
view=".views.hello_world"
name="hello_world.txt"
context="*"
/>
The wsgiapp decorator will convert the result of the WSGI
application to a Response and return it to repoze.bfg as if the
WSGI app were a repoze.bfg view.
"""
def _curried(context, request):
caught = []
def catch_start_response(status, headers, exc_info=None):
caught[:] = (status, headers, exc_info)
environ = request.environ
body = wrapped(environ, catch_start_response)
if caught:
status, headers, exc_info = caught
response = Response()
response.app_iter = body
response.status = status
response.headerlist = headers
return response
else:
raise RuntimeError('WSGI start_response not called')
_curried.__name__ = wrapped.__name__
return _curried
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