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# Copyright (c) 2002, 2005 Allan Saddi <allan@saddi.com>
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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# $Id: resolver.py 1833 2005-12-17 00:58:10Z asaddi $
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__author__ = 'Allan Saddi <allan@saddi.com>'
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__version__ = '$Revision: 1833 $'
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__all__ = ['Resolver']
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class Resolver(object):
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Abstract base class for 'Resolver' objects. (An instance of which is
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passed to Publisher's constructor.)
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Given a Request, either return a callable (Publisher expects it to
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be a function, method, class, or callable instance), or return None.
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Typically Request.pathInfo is used to resolve the function.
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Request.environ may be modified by the Resolver, for example, to re-adjust
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SCRIPT_NAME/PATH_INFO after successful resolution. It is NOT recommended
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that it be modified if resolution fails.
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When resolving an InternalRedirect, redirect will be True.
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def resolve(self, request, redirect=False):
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raise NotImplementedError, self.__class__.__name__ + '.resolve'
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def _updatePath(self, request, num):
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Utility function to update SCRIPT_NAME and PATH_INFO in a sane
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manner. Transfers num components from PATH_INFO to SCRIPT_NAME.
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Keeps URL path parameters intact.
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return # Nothing to do
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numScriptName = len(request.scriptName.split('/'))
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totalPath = request.scriptName + request.pathInfo
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origTotalPath = totalPath
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# Extract and save params
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i = totalPath.find(';')
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params = totalPath[i:]
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totalPath = totalPath[:i]
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totalPath = totalPath.split('/')
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scriptName = '/'.join(totalPath[:numScriptName + num])
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pathInfo = '/'.join([''] + totalPath[numScriptName + num:])
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# SCRIPT_NAME shouldn't have trailing slash
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if scriptName.endswith('/'):
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scriptName = scriptName[:-1]
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# Transfer to PATH_INFO (most likely empty, but just to be safe...)
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pathInfo = '/' + pathInfo
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request.environ['SCRIPT_NAME'] = scriptName
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request.environ['PATH_INFO'] = pathInfo + params
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assert request.scriptName + request.pathInfo == origTotalPath
added
removed
flup/resolver/resolver.py
