registry.py
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	# -- coding: utf-8 --
	#
	# This file is part of Invenio.
	# Copyright (C) 2013, 2014 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

	import os

	from flask.ext.registry import PkgResourcesDirDiscoveryRegistry, \
	ModuleAutoDiscoveryRegistry, RegistryProxy
	from invenio.utils.datastructures import LazyDict

	exporterext = RegistryProxy(
	'exporterext', ModuleAutoDiscoveryRegistry, 'exportext'
	)

	configurations = LazyDict(
	lambda: dict((os.path.basename(f), f)
	for f in RegistryProxy('exporterext.configurations',
	PkgResourcesDirDiscoveryRegistry,
	'configurations',
	registry_namespace=exporterext)))