gview.py
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	## 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.

	from flask import render_template


	def can_preview(f):
	'''
	Returns if filetype can be previewed.
	'''
	return f.superformat in ['.pdf', '.jpeg', '.png', '.gif', '.tiff', '.bmp',
	'.mpeg4', '.3gpp', '.mov', '.avi', '.mpegps', '.wmv', '.flv',
	'.txt', '.css', '.html', '.php', '.c', '.cpp', '.h', '.hpp', '.js',
	'.doc', '.docx', '.xls', '.xlsx', '.ppt', '.pptx', '.pages', '.ai',
	'.psd', '.dfx', '.svg', '.eps', '.ps', '.ttf', '.xps', '.zip', '.rar']


	def preview(f, emb = None):
	'''
	Returns appropiate template and passes the filea and an embed flag.
	'''
	return render_template("previews/gview.html", f=f, embed=emb)