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Viewing changes to inkscape-0.47pre1/share/extensions/Barcode/Code128.py

  • Committer: Bazaar Package Importer
  • Author(s): Bryce Harrington
  • Date: 2009-07-02 17:09:45 UTC
  • mfrom: (1.1.9 upstream)
  • Revision ID: james.westby@ubuntu.com-20090702170945-nn6d6zswovbwju1t
Tags: 0.47~pre1-0ubuntu1
https://launchpad.net/bugs/348842
https://launchpad.net/bugs/391149
* New upstream release.
  - Don't constrain maximization on small resolution devices (pre0)
    (LP: #348842)
  - Fixes segfault on startup (pre0)
    (LP: #391149)

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inkscape-0.47pre1/share/extensions/Barcode/Code128.py
 
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'''
 
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Copyright (C) 2007 Martin Owens
 
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Debugged by Ralf Heinecke & Martin Siepmann 09/07/2007
 
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This program is free software; you can redistribute it and/or modify
 
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it under the terms of the GNU General Public License as published by
 
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the Free Software Foundation; either version 2 of the License, or
 
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(at your option) any later version.
 
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This program is distributed in the hope that it will be useful,
 
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but WITHOUT ANY WARRANTY; without even the implied warranty of
 
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 
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GNU General Public License for more details.
 
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You should have received a copy of the GNU General Public License
 
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along with this program; if not, write to the Free Software
 
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 
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'''
 
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from Base import Barcode
 
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import math
 
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import re
 
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map = [ '11011001100','11001101100','11001100110','10010011000','10010001100','10001001100','10011001000','10011000100','10001100100','11001001000','11001000100','11000100100','10110011100','10011011100','10011001110','10111001100','10011101100','10011100110','11001110010','11001011100','11001001110','11011100100','11001110100','11101101110','11101001100','11100101100','11100100110','11101100100','11100110100','11100110010','11011011000','11011000110','11000110110','10100011000','10001011000','10001000110','10110001000','10001101000','10001100010','11010001000','11000101000','11000100010','10110111000','10110001110','10001101110','10111011000','10111000110','10001110110','11101110110','11010001110','11000101110','11011101000','11011100010','11011101110','11101011000','11101000110','11100010110','11101101000','11101100010','11100011010','11101111010','11001000010','11110001010','10100110000','10100001100','10010110000','10010000110','10000101100','10000100110','10110010000','10110000100','10011010000','10011000010','10000110100','10000110010','11000010010','11001010000','11110111010','11000010100','10001111010','10100111100','10010111100','10010011110','10111100100','10011110100','10011110010','11110100100','11110010100','11110010010','11011011110','11011110110','11110110110','10101111000','10100011110','10001011110','10111101000','10111100010','11110101000','11110100010','10111011110','10111101110','11101011110','11110101110','11010000100','11010010000','11010011100','11000111010','11' ]
 
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def mapExtra(sd, chars):
 
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        result = list(sd)
 
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        for char in chars:
 
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                result.append(chr(char))
 
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        result.append('FNC3')
 
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        result.append('FNC2')
 
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        result.append('SHIFT')
 
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        return result
 
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# The mapExtra method is used to slim down the amount
 
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# of pre code and instead we generate the lists
 
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charAB = list(' !"#$%&\'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_')
 
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charA = mapExtra(charAB, range(0, 31)) # Offset 64
 
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charB = mapExtra(charAB, range(96, 125)) # Offset -32
 
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class Object(Barcode):
 
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        def encode(self, text):
 
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                result = ''
 
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                blocks = []
 
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                block  = ''
 
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                # Split up into sections of numbers, or charicters
 
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                # This makes sure that all the charicters are encoded
 
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                # In the best way posible for Code128
 
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                for datum in re.findall(r'(?:(?:\d\d){2,})|.', text):
 
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                        if len(datum) == 1:
 
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                                block = block + datum
 
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                        else:
 
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                                if block:
 
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                                        blocks.append(self.bestBlock(block))
 
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                                        block = ''
 
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                                blocks.append( [ 'C', datum ] )
 
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                if block:
 
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                        blocks.append(self.bestBlock(block))
 
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                        block = '';
 
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                self.inclabel = text
 
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                return self.encodeBlocks(blocks)
 
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        def bestBlock(self, block):
 
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                # If this has lower case then select B over A
 
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                if block.upper() == block:
 
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                        return [ 'A', block ]
 
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                return [ 'B', block ]
 
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        def encodeBlocks(self, blocks):
 
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                total  = 0
 
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                pos    = 0
 
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                encode = '';
 
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                for block in blocks:
 
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                        set   = block[0]
 
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                        datum = block[1]
 
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                        # POS :   0,   1
 
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                        # A   : 101, 103
 
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                        # B   : 100, 104
 
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                        # C   :  99, 105
 
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                        num = 0;
 
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                        if set == 'A':
 
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                                num = 103
 
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                        elif set == 'B':
 
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                                num = 104
 
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                        elif set == 'C':
 
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                                num = 105
 
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                        i = pos
 
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                        if pos:
 
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                                num = num + (math.abs(num - 102) * 2)
 
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                        else:
 
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                                i = 1
 
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                        total = total + num * i
 
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                        encode = encode + map[num]
 
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                        pos = pos + 1
 
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                        if set == 'A' or set == 'B':
 
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                                chars = charB
 
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                                if set == 'A':
 
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                                        chars = charA
 
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                                for char in datum:
 
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                                        total = total + (chars.index(char) * pos)
 
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                                        encode = encode + map[chars.index(char)]
 
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                                        pos = pos + 1
 
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                        else:
 
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                                for char in (datum[i:i+2] for i in range(0, len(datum), 2)):
 
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                                        total = total + (int(char) * pos)
 
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                                        encode = encode + map[int(char)]
 
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                                        pos = pos + 1
 
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                checksum = total % 103
 
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                encode = encode + map[checksum]
 
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                encode = encode + map[106]
 
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                encode = encode + map[107]
 
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                return encode
 
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