78c8521f14772c2349132ec65d725ba13d4fa61e
1 #!/usr/bin/env python
2 '''
3 Copyright (C) 2007 Martin Owens
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18 '''
20 from Base import Barcode
22 encoding = {
23 '0' : '000110100',
24 '1' : '100100001',
25 '2' : '001100001',
26 '3' : '101100000',
27 '4' : '000110001',
28 '5' : '100110000',
29 '6' : '001110000',
30 '7' : '000100101',
31 '8' : '100100100',
32 '9' : '001100100',
33 'A' : '100001001',
34 'B' : '001001001',
35 'C' : '101001000',
36 'D' : '000011001',
37 'E' : '100011000',
38 'F' : '001011000',
39 'G' : '000001101',
40 'H' : '100001100',
41 'I' : '001001100',
42 'J' : '000011100',
43 'K' : '100000011',
44 'L' : '001000011',
45 'M' : '101000010',
46 'N' : '000010011',
47 'O' : '100010010',
48 'P' : '001010010',
49 'Q' : '000000111',
50 'R' : '100000110',
51 'S' : '001000110',
52 'T' : '000010110',
53 'U' : '110000001',
54 'V' : '011000001',
55 'W' : '111000000',
56 'X' : '010010001',
57 'Y' : '110010000',
58 'Z' : '011010000',
59 '-' : '010000101',
60 '*' : '010010100',
61 '+' : '010001010',
62 '$' : '010101000',
63 '%' : '000101010',
64 '/' : '010100010',
65 '.' : '110000100',
66 ' ' : '011000100',
67 }
69 class Object(Barcode):
70 # Convert a text into string binary of black and white markers
71 def encode(self, text):
72 text = text.upper()
73 self.label = text
74 text = '*' + text + '*'
75 result = ''
76 # It isposible for us to encode code39
77 # into full ascii, but this feature is
78 # not enabled here
79 for char in text:
80 if not encoding.has_key(char):
81 char = '-';
83 result = result + encoding[char] + '0';
85 # Now we need to encode the code39, best read
86 # the code to understand what it's up to:
87 encoded = '';
88 colour = '1'; # 1 = Black, 0 = White
89 for data in result:
90 if data == '1':
91 encoded = encoded + colour + colour
92 else:
93 encoded = encoded + colour
94 if colour == '1':
95 colour = '0'
96 else:
97 colour = '1'
99 self.inclabel = text
100 return encoded;