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Diffstat (limited to 'share/extensions/Barcode/Code128.py')
| -rw-r--r-- | share/extensions/Barcode/Code128.py | 153 |
1 files changed, 0 insertions, 153 deletions
diff --git a/share/extensions/Barcode/Code128.py b/share/extensions/Barcode/Code128.py deleted file mode 100644 index 4af788bbe..000000000 --- a/share/extensions/Barcode/Code128.py +++ /dev/null @@ -1,153 +0,0 @@ -# -# Authored by Martin Owens <doctormo@gmail.com> -# Debugged by Ralf Heinecke & Martin Siepmann 2007-09-07 -# Horst Schottky 2010-02-27 -# -# 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA. -# -""" -Renderer for Code128/EAN128 codes. Designed for use with Inkscape. -""" - -from .Base import Barcode -import re - -CODE_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'] - -def map_extra(data, chars): - """Maps the data into the chars""" - result = list(data) - for char in chars: - result.append(chr(char)) - result.append('FNC3') - result.append('FNC2') - result.append('SHIFT') - return result - -# The map_extra method is used to slim down the amount -# of pre code and instead we generate the lists -CHAR_AB = list(" !\"#$%&\'()*+,-./0123456789:;<=>?@" - "ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_") -CHAR_A = map_extra(CHAR_AB, range(0, 31)) # Offset 64 -CHAR_B = map_extra(CHAR_AB, range(96, 125)) # Offset -32 - -class Code128(Barcode): - """Main barcode object, generates the encoding bits here""" - def encode(self, text): - blocks = [] - block = '' - - # Split up into sections of numbers, or characters - # This makes sure that all the characters are encoded - # In the best way possible for Code128 - for datum in re.findall(r'(?:(?:\d\d){2,})|(?:^\d\d)|.', text): - if len(datum) == 1: - block = block + datum - else: - if block: - blocks.append(self.best_block(block)) - block = '' - blocks.append(['C', datum]) - - if block: - blocks.append(self.best_block(block)) - block = '' - - return self.encode_blocks(blocks) - - def best_block(self, block): - """If this has lower case then select B over A""" - if block.upper() == block: - return ['A', block] - return ['B', block] - - def encode_blocks(self, blocks): - """Encode the given blocks into A, B or C codes""" - encode = '' - total = 0 - pos = 0 - - for block in blocks: - b_set = block[0] - datum = block[1] - - # POS : 0, 1 - # A : 101, 103 - # B : 100, 104 - # C : 99, 105 - num = 0 - if b_set == 'A': - num = 103 - elif b_set == 'B': - num = 104 - elif b_set == 'C': - num = 105 - - i = pos - if pos: - num = 204 - num - else: - i = 1 - - total = total + num * i - encode = encode + CODE_MAP[num] - pos = pos + 1 - - if b_set == 'A' or b_set == 'B': - chars = CHAR_B - if b_set == 'A': - chars = CHAR_A - - for char in datum: - total = total + (chars.index(char) * pos) - encode = encode + CODE_MAP[chars.index(char)] - pos = pos + 1 - else: - for char in (datum[i:i+2] for i in range(0, len(datum), 2)): - total = total + (int(char) * pos) - encode = encode + CODE_MAP[int(char)] - pos = pos + 1 - - checksum = total % 103 - encode = encode + CODE_MAP[checksum] - encode = encode + CODE_MAP[106] - encode = encode + CODE_MAP[107] - - return encode - |