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#
# Copyright (C) 2009 Aaron C Spike
# 2010 Martin Owens
#
# This program 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.
#
# This program 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 this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
"""
Python barcode renderer for EAN5 barcodes. Designed for use with Inkscape.
"""
from BaseEan import EanBarcode
FAMS = [ '11000','10100','10010','10001','01100','00110','00011','01010','01001','00101' ]
START = '01011'
class Object(EanBarcode):
"""Provide an Ean5 barcode generator"""
name = 'ean5'
length = 5
def _encode(self, number):
self.x += 110.0 # horiz offset so it does not overlap EAN13
self.y -= self.height + 5 # move the text to the top
self.label = ' '.join(self.space(number))
family = sum([int(n)*int(m) for n,m in zip(number, '39393')]) % 10
return START + '01'.join(self.encode_interleaved(family, number, FAMS))
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