Add doctormo's barcode extension. Patch 1681456. Still need to make it work with the make-chinery for installation and distribution.

(bzr r2958)

1 files changed, 100 insertions, 0 deletions

diff --git a/share/extensions/Barcode/Code39.py b/share/extensions/Barcode/Code39.py
new file mode 100644
index 000000000..650d27d95
--- /dev/null
+++ b/share/extensions/Barcode/Code39.py
@@ -0,0 +1,100 @@
+'''
+Copyright (C) 2007 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
+'''
+
+from Base import Barcode
+
+encoding = {
+	'0' : '000110100',
+	'1' : '100100001',
+	'2' : '001100001',
+	'3' : '101100000', 
+	'4' : '000110001',
+	'5' : '100110000',
+	'6' : '001110000',
+	'7' : '000100101',
+	'8' : '100100100',
+	'9' : '001100100',
+	'A' : '100001001',
+	'B' : '001001001',
+	'C' : '101001000',
+	'D' : '000011001',
+	'E' : '100011000',
+	'F' : '001011000',
+	'G' : '000001101',
+	'H' : '100001100',
+	'I' : '001001100',
+	'J' : '000011100',
+	'K' : '100000011',
+	'L' : '001000011',
+	'M' : '101000010',
+	'N' : '000010011',
+	'O' : '100010010',
+	'P' : '001010010',
+	'Q' : '000000111',
+	'R' : '100000110',
+	'S' : '001000110',
+	'T' : '000010110',
+	'U' : '110000001',
+	'V' : '011000001',
+	'W' : '111000000',
+	'X' : '010010001',
+	'Y' : '110010000',
+	'Z' : '011010000',
+	'-' : '010000101',
+	'*' : '010010100',
+	'+' : '010001010',
+	'$' : '010101000',
+	'%' : '000101010',
+	'/' : '010100010',
+	'.' : '110000100',
+	' ' : '011000100',
+}
+
+class Object(Barcode):
+	# Convert a text into string binary of black and white markers
+	def encode(self, text):
+		text       = text.upper()
+		self.label = text
+		text       = '*' + text + '*'
+		result     = ''
+		# It isposible for us to encode code39
+		# into full ascii, but this feature is
+		# not enabled here
+		for char in text:
+			if not encoding.has_key(char):
+				char = '-';
+
+			result = result + encoding[char] + '0';
+
+		# Now we need to encode the code39, best read
+		# the code to understand what it's up to:
+		encoded = '';
+		colour   = '1'; # 1 = Black, 0 = White
+		for data in result:
+			if data == '1':
+				encoded = encoded + colour + colour
+			else:
+				encoded = encoded + colour
+			if colour == '1':
+				colour = '0'
+			else:
+				colour = '1'
+
+		self.inclabel = text
+		return encoded;
+