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goto_webinterface.py
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Sun, Sep 29, 03:18

goto_webinterface.py
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# This file is part of Invenio.
# Copyright (C) 2012 CERN.
#
# Invenio is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License as
# published by the Free Software Foundation; either version 2 of the
# License, or (at your option) any later version.
#
# Invenio is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Invenio; if not, write to the Free Software Foundation, Inc.,
# 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
"""
Implements persistent URLs
"""
import inspect
from invenio.config import CFG_SITE_URL
from invenio.webinterface_handler import WebInterfaceDirectory
from invenio.webinterface_handler_config import SERVER_RETURN, HTTP_NOT_FOUND
from invenio.urlutils import redirect_to_url
from invenio.goto_engine import get_redirection_data
from invenio.webuser import collect_user_info
from invenio.errorlib import register_exception
class WebInterfaceGotoPages(WebInterfaceDirectory):
def _lookup(self, component, path):
try:
redirection_data = get_redirection_data(component)
goto_plugin = redirection_data['plugin']
args, dummy_varargs, dummy_varkw, defaults = inspect.getargspec(goto_plugin)
args = args and list(args) or []
args.reverse()
defaults = defaults and list(defaults) or []
defaults.reverse()
params_to_pass = {}
for arg, default in map(None, args, defaults):
params_to_pass[arg] = default
def goto_handler(req, form):
## Let's put what is in the GET query
for key, value in dict(form).items():
if key in params_to_pass:
params_to_pass[key] = str(value)
## Let's override the params_to_pass to the call with the
## arguments in the configuration
configuration_parameters = redirection_data['parameters'] or {}
params_to_pass.update(configuration_parameters)
## Let's add default parameters if the plugin expects them
if 'component' in params_to_pass:
params_to_pass['component'] = component
if 'path' in params_to_pass:
params_to_pass['path'] = path
if 'user_info' in params_to_pass:
params_to_pass['user_info'] = collect_user_info(req)
if 'req' in params_to_pass:
params_to_pass['req'] = req
try:
new_url = goto_plugin(**params_to_pass)
except Exception, err:
register_exception(req=req, alert_admin=True)
raise SERVER_RETURN(HTTP_NOT_FOUND)
if new_url:
if new_url.startswith('/'):
new_url = CFG_SITE_URL + new_url
redirect_to_url(req, new_url)
else:
raise SERVER_RETURN(HTTP_NOT_FOUND)
return goto_handler, []
except ValueError:
return None, []

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