From 16246cb0d733077d7c71fe1663a2af4340c6c953 Mon Sep 17 00:00:00 2001
From: Aaron Spike <aaron@ekips.org>
Date: Wed, 25 Apr 2007 00:53:02 +0000
Subject: Add doctormo's barcode extension. Patch 1681456. Still need to make
 it work with the make-chinery for installation and distribution.

(bzr r2958)
---
 share/extensions/Barcode/Code39Ext.py | 62 +++++++++++++++++++++++++++++++++++
 1 file changed, 62 insertions(+)
 create mode 100644 share/extensions/Barcode/Code39Ext.py

(limited to 'share/extensions/Barcode/Code39Ext.py')

diff --git a/share/extensions/Barcode/Code39Ext.py b/share/extensions/Barcode/Code39Ext.py
new file mode 100644
index 000000000..d1682a641
--- /dev/null
+++ b/share/extensions/Barcode/Code39Ext.py
@@ -0,0 +1,62 @@
+'''
+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
+'''
+
+import Code39
+
+encode = list('ABCDEFGHIJKLMNOPQRSTUVWXYZ')
+
+map = {}
+
+i = 0
+for char in encode:
+	map[char] = i
+	i = i + 1
+
+# Extended encoding maps for full ASCII Code93
+def getMap(array):
+	result = {}
+	y = 0
+	for x in array:
+		result[chr(x)] = encode[y]
+		y = y + 1
+
+	return result;
+
+# MapA is eclectic, but B, C, D are all ASCII ranges
+mapA = getMap([27,28,29,30,31,59,60,61,62,63,91,92,93,94,95,123,124,125,126,127,0,64,96,127,127,127]) # %
+mapB = getMap(range(1, 26)) # $
+mapC = getMap(range(33, 58)) # /
+mapD = getMap(range(97, 122)) # +
+
+class Object(Code39.Object):
+	def encode(self, text):
+		# We are only going to extend the Code39 barcodes
+		result = ''
+		for char in text:
+			if mapA.has_key(char):
+				char = '%' + mapA[char]
+			elif mapB.has_key(char):
+				char = '$' + mapB[char]
+			elif mapC.has_key(char):
+				char = '/' + mapC[char]
+			elif mapD.has_key(char):
+				char = '+' + mapD[char]
+			result = result + char
+
+		return Code39.Object.encode(self, result);
+
-- 
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