bfe_ObjectLanguage.py
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	# -- coding: utf-8 --
	##
	## This file is part of CDS Invenio.
	## Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008 CERN.
	##
	## CDS 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.
	##
	## CDS 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 CDS Invenio; if not, write to the Free Software Foundation, Inc.,
	## 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.

	# Consider moving this element to CERN specific CVS
	CFG_TWO_TO_THREE_LETTER_MAPPING = {}
	CFG_TWO_TO_THREE_LETTER_MAPPING["en"] = "eng"
	CFG_TWO_TO_THREE_LETTER_MAPPING["fr"] = "fre"

	def format(bfo, letters="2", filter='no'):
	"""
	Returns the user-chosen langage.

	@param letters Can be 2 or 3, to return for example "en" or "eng"
	@param filter if 'yes', returns only know languages
	"""
	ln = bfo.lang
	if filter.lower() == 'yes' and \
	ln not in CFG_TWO_TO_THREE_LETTER_MAPPING.keys():
	ln = 'en'

	if letters == "3":
	try:
	return CFG_TWO_TO_THREE_LETTER_MAPPING[ln]
	except:
	return ln
	else:
	return ln

	def escape_values(bfo):
	"""
	"""
	return 0