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