#!/usr/bin/python # This list was cut'n'pasted verbatim from the "Code 128 Specification Page" # at http://www.adams1.com/pub/russadam/128code.html codelist="""0 SP SP 00 2 1 2 2 2 2 1 ! ! 01 2 2 2 1 2 2 2 " " 02 2 2 2 2 2 1 3 # # 03 1 2 1 2 2 3 4 $ $ 04 1 2 1 3 2 2 5 % % 05 1 3 1 2 2 2 6 & & 06 1 2 2 2 1 3 7 ' ' 07 1 2 2 3 1 2 8 ( ( 08 1 3 2 2 1 2 9 ) ) 09 2 2 1 2 1 3 10 * * 10 2 2 1 3 1 2 11 + + 11 2 3 1 2 1 2 12 , , 12 1 1 2 2 3 2 13 - - 13 1 2 2 1 3 2 14 . . 14 1 2 2 2 3 1 15 / / 15 1 1 3 2 2 2 16 0 0 16 1 2 3 1 2 2 17 1 1 17 1 2 3 2 2 1 18 2 2 18 2 2 3 2 1 1 19 3 3 19 2 2 1 1 3 2 20 4 4 20 2 2 1 2 3 1 21 5 5 21 2 1 3 2 1 2 22 6 6 22 2 2 3 1 1 2 23 7 7 23 3 1 2 1 3 1 24 8 8 24 3 1 1 2 2 2 25 9 9 25 3 2 1 1 2 2 26 : : 26 3 2 1 2 2 1 27 ; ; 27 3 1 2 2 1 2 28 < < 28 3 2 2 1 1 2 29 = = 29 3 2 2 2 1 1 30 > > 30 2 1 2 1 2 3 31 ? ? 31 2 1 2 3 2 1 32 @ @ 32 2 3 2 1 2 1 33 A A 33 1 1 1 3 2 3 34 B B 34 1 3 1 1 2 3 35 C C 35 1 3 1 3 2 1 36 D D 36 1 1 2 3 1 3 37 E E 37 1 3 2 1 1 3 38 F F 38 1 3 2 3 1 1 39 G G 39 2 1 1 3 1 3 40 H H 40 2 3 1 1 1 3 41 I I 41 2 3 1 3 1 1 42 J J 42 1 1 2 1 3 3 43 K K 43 1 1 2 3 3 1 44 L L 44 1 3 2 1 3 1 45 M M 45 1 1 3 1 2 3 46 N N 46 1 1 3 3 2 1 47 O O 47 1 3 3 1 2 1 48 P P 48 3 1 3 1 2 1 49 Q Q 49 2 1 1 3 3 1 50 R R 50 2 3 1 1 3 1 51 S S 51 2 1 3 1 1 3 52 T T 52 2 1 3 3 1 1 53 U U 53 2 1 3 1 3 1 54 V V 54 3 1 1 1 2 3 55 W W 55 3 1 1 3 2 1 56 X X 56 3 3 1 1 2 1 57 Y Y 57 3 1 2 1 1 3 58 Z Z 58 3 1 2 3 1 1 59 [ [ 59 3 3 2 1 1 1 60 \\ \\ 60 3 1 4 1 1 1 61 ] ] 61 2 2 1 4 1 1 62 ^ ^ 62 4 3 1 1 1 1 63 _ _ 63 1 1 1 2 2 4 64 NUL ' 64 1 1 1 4 2 2 65 SOH a 65 1 2 1 1 2 4 66 STX b 66 1 2 1 4 2 1 67 ETX c 67 1 4 1 1 2 2 68 EOT d 68 1 4 1 2 2 1 69 ENQ e 69 1 1 2 2 1 4 70 ACK f 70 1 1 2 4 1 2 71 BEL g 61 1 2 2 1 1 4 72 BS h 72 1 2 2 4 1 1 73 HT i 73 1 4 2 1 1 2 74 LF j 74 1 4 2 2 1 1 75 VT k 75 2 4 1 2 1 1 76 FF l 76 2 2 1 1 1 4 77 CR m 77 4 1 3 1 1 1 78 SO n 78 2 4 1 1 1 2 79 SI o 79 1 3 4 1 1 1 80 DLE p 80 1 1 1 2 4 2 81 DC1 q 81 1 2 1 1 4 2 82 DC2 r 82 1 2 1 2 4 1 83 DC3 s 83 1 1 4 2 1 2 84 DC4 t 84 1 2 4 1 1 2 85 NAK u 85 1 2 4 2 1 1 86 SYN v 86 4 1 1 2 1 2 87 ETB w 87 4 2 1 1 1 2 88 CAN x 88 4 2 1 2 1 1 89 EM y 89 2 1 2 1 4 1 90 SUB z 90 2 1 4 1 2 1 91 ESC { 91 4 1 2 1 2 1 92 FS | 92 1 1 1 1 4 3 93 GS } 93 1 1 1 3 4 1 94 RS ~ 94 1 3 1 1 4 1 95 (Hex 7F) US DEL 95 1 1 4 1 1 3 96 (Hex 80) FNC 3 FNC 3 96 1 1 4 3 1 1 97 (Hex 81) FNC 2 FNC 2 97 4 1 1 1 1 3 98 (Hex 82) SHIFT SHIFT 98 4 1 1 3 1 1 99 (Hex 83) CODE C CODE C 99 1 1 3 1 4 1 100 (Hex 84) CODE B FNC 4 CODE B 1 1 4 1 3 1 101 (Hex 85) FNC 4 CODE A CODE A 3 1 1 1 4 1 102 (Hex 86) FNC 1 FNC 1 FNC 1 4 1 1 1 3 1""" other="""103 (Hex 87) START (Code A) 2 1 1 4 1 2 104 (Hex 88) START (Code B) 2 1 1 2 1 4 105 (Hex 89) START (Code C) 2 1 1 2 3 2 106 STOP 2 3 3 1 1 1 2""" codes={} values={} for l in codelist.split('\n'): l.strip() num,a1,b1,c1,code=l.split('\t') num=int(num.split(' ')[0]) values[num]=[int(x) for x in code.split()] codes[b1.strip()]=num codes[' ']=codes['SP'] for l in other.split('\n'): l.strip() num,name,code=l.split('\t') num=int(num.split(' ')[0]) values[num]=[int(x) for x in code.split()] codes[name.strip()]=num def encode_message(msg): startnum=codes['START (Code B)'] message=values[startnum][:] chksum=startnum mult=1 for c in msg: if not codes.has_key(c): raise "No code for "+c chksum=chksum+mult*codes[c] mult=mult+1 message=message+values[codes[c]] chksum=chksum%103 message=message+values[chksum] message=message+values[codes['STOP']] return message import Image def get_code(message,xw=1,h=100): """ message is message to code. xw is horizontal multiplier (in pixels width of narrowest bar) h is height in pixels. Returns a Python Imaging Library object.""" widths=[xw*20]+encode_message(message)+[xw*20] bits=[] i=1 for w in widths: bits=bits+[i]*w*xw i=1-i print len(bits) print bits i=Image.new('1',(len(bits),h),1) for b in range(len(bits)): for y in range(h): i.putpixel((b,y),255*bits[b]) return i c=get_code('Code 128') c.show() c.save('code.png')