/usr/lib/python3/dist-packages/reportlab/graphics/barcode/usps4s.py is in python3-reportlab 3.3.0-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 | #copyright ReportLab Inc. 2000-2016
#see license.txt for license details
__version__='3.3.0'
__all__ = ('USPS_4State',)
from reportlab.lib.colors import black
from reportlab.graphics.barcode.common import Barcode
from reportlab.lib.utils import asNative
class USPS_4State(Barcode):
''' USPS 4-State OneView (TM) barcode. All info from USPS-B-3200A
'''
_widthSize = 1
_heightSize = 1
_fontSize = 11
_humanReadable = 0
tops = dict(
F = (0.067,0.115),
T = (0.021,0.040),
A = (0.067,0.115),
D = (0.021,0.040),
)
bottoms = dict(
F = (-0.067,-0.115),
D = (-0.067,-0.115),
T = (-0.021,-0.040),
A = (-0.021,-0.040),
)
dimensions = dict(
width = (0.015, 0.025),
pitch = (0.0416,0.050),
hcz = (0.125,0.125),
vcz = (0.040,0.040),
)
def __init__(self,value='01234567094987654321',routing='',**kwd):
self._init()
value = str(value) if isinstance(value,int) else asNative(value)
self._tracking = value
self._routing = routing
self._setKeywords(**kwd)
def _init(self):
self._bvalue = None
self._codewords = None
self._characters = None
self._barcodes = None
def scale(kind,D,s):
V = D[kind]
return 72*(V[0]*(1-s)+s*V[1])
scale = staticmethod(scale)
def tracking(self,tracking):
self._init()
self._tracking = tracking
tracking = property(lambda self: self._tracking,tracking)
def routing(self,routing):
self._init()
self._routing = routing
routing = property(lambda self: self._routing,routing)
def widthSize(self,value):
self._sized = None
self._widthSize = value
widthSize = property(lambda self: self._widthSize,widthSize)
def heightSize(self,value):
self._sized = None
self._heightSize = value
heightSize = property(lambda self: self._heightSize,heightSize)
def fontSize(self,value):
self._sized = None
self._fontSize = value
fontSize = property(lambda self: self._fontSize,fontSize)
def humanReadable(self,value):
self._sized = None
self._humanReadable = value
humanReadable = property(lambda self: self._humanReadable,humanReadable)
def binary(self):
'''convert the 4 state string values to binary
>>> print hex(USPS_4State('01234567094987654321','').binary)
0x1122103B5C2004B1L
>>> print hex(USPS_4State('01234567094987654321','01234').binary)
0xD138A87BAB5CF3804B1L
>>> print hex(USPS_4State('01234567094987654321','012345678').binary)
0x202BDC097711204D21804B1L
>>> print hex(USPS_4State('01234567094987654321','01234567891').binary)
0x16907B2A24ABC16A2E5C004B1L
'''
value = self._bvalue
if not value:
routing = self.routing
n = len(routing)
try:
if n==0:
value = 0
elif n==5:
value = int(routing)+1
elif n==9:
value = int(routing)+100001
elif n==11:
value = int(routing)+1000100001
else:
raise ValueError
except:
raise ValueError('Problem converting %s, routing code must be 0, 5, 9 or 11 digits' % routing)
tracking = self.tracking
svalue = tracking[0:2]
try:
value *= 10
value += int(svalue[0])
value *= 5
value += int(svalue[1])
except:
raise ValueError('Problem converting %s, barcode identifier must be 2 digits' % svalue)
i = 2
for name,nd in (('special services',3), ('customer identifier',6), ('sequence number',9)):
j = i
i += nd
svalue = tracking[j:i]
try:
if len(svalue)!=nd: raise ValueError
for j in range(nd):
value *= 10
value += int(svalue[j])
except:
raise ValueError('Problem converting %s, %s must be %d digits' % (svalue,name,nd))
self._bvalue = value
return value
binary = property(binary)
def codewords(self):
'''convert binary value into codewords
>>> print USPS_4State('01234567094987654321','01234567891').codewords)
(673, 787, 607, 1022, 861, 19, 816, 1294, 35, 602)
'''
if not self._codewords:
value = self.binary
A, J = divmod(value,636)
A, I = divmod(A,1365)
A, H = divmod(A,1365)
A, G = divmod(A,1365)
A, F = divmod(A,1365)
A, E = divmod(A,1365)
A, D = divmod(A,1365)
A, C = divmod(A,1365)
A, B = divmod(A,1365)
assert 0<=A<=658, 'improper value %s passed to _2codewords A-->%s' % (hex(int(value)),A)
self._fcs = _crc11(value)
if self._fcs&1024: A += 659
J *= 2
self._codewords = tuple(map(int,(A,B,C,D,E,F,G,H,I,J)))
return self._codewords
codewords = property(codewords)
def table1(self):
self.__class__.table1 = _initNof13Table(5,1287)
return self.__class__.table1
table1 = property(table1)
def table2(self):
self.__class__.table2 = _initNof13Table(2,78)
return self.__class__.table2
table2 = property(table2)
def characters(self):
''' convert own codewords to characters
>>> print ' '.join(hex(c)[2:] for c in USPS_4State('01234567094987654321','01234567891').characters)
dcb 85c 8e4 b06 6dd 1740 17c6 1200 123f 1b2b
'''
if not self._characters:
codewords = self.codewords
fcs = self._fcs
C = []
aC = C.append
table1 = self.table1
table2 = self.table2
for i in range(10):
cw = codewords[i]
if cw<=1286:
c = table1[cw]
else:
c = table2[cw-1287]
if (fcs>>i)&1:
c = ~c & 0x1fff
aC(c)
self._characters = tuple(C)
return self._characters
characters = property(characters)
def barcodes(self):
'''Get 4 state bar codes for current routing and tracking
>>> print USPS_4State('01234567094987654321','01234567891').barcodes
AADTFFDFTDADTAADAATFDTDDAAADDTDTTDAFADADDDTFFFDDTTTADFAAADFTDAADA
'''
if not self._barcodes:
C = self.characters
B = []
aB = B.append
bits2bars = self._bits2bars
for dc,db,ac,ab in self.table4:
aB(bits2bars[((C[dc]>>db)&1)+2*((C[ac]>>ab)&1)])
self._barcodes = ''.join(B)
return self._barcodes
barcodes = property(barcodes)
table4 = ((7, 2, 4, 3), (1, 10, 0, 0), (9, 12, 2, 8), (5, 5, 6, 11),
(8, 9, 3, 1), (0, 1, 5, 12), (2, 5, 1, 8), (4, 4, 9, 11),
(6, 3, 8, 10), (3, 9, 7, 6), (5, 11, 1, 4), (8, 5, 2, 12),
(9, 10, 0, 2), (7, 1, 6, 7), (3, 6, 4, 9), (0, 3, 8, 6),
(6, 4, 2, 7), (1, 1, 9, 9), (7, 10, 5, 2), (4, 0, 3, 8),
(6, 2, 0, 4), (8, 11, 1, 0), (9, 8, 3, 12), (2, 6, 7, 7),
(5, 1, 4, 10), (1, 12, 6, 9), (7, 3, 8, 0), (5, 8, 9, 7),
(4, 6, 2, 10), (3, 4, 0, 5), (8, 4, 5, 7), (7, 11, 1, 9),
(6, 0, 9, 6), (0, 6, 4, 8), (2, 1, 3, 2), (5, 9, 8, 12),
(4, 11, 6, 1), (9, 5, 7, 4), (3, 3, 1, 2), (0, 7, 2, 0),
(1, 3, 4, 1), (6, 10, 3, 5), (8, 7, 9, 4), (2, 11, 5, 6),
(0, 8, 7, 12), (4, 2, 8, 1), (5, 10, 3, 0), (9, 3, 0, 9),
(6, 5, 2, 4), (7, 8, 1, 7), (5, 0, 4, 5), (2, 3, 0, 10),
(6, 12, 9, 2), (3, 11, 1, 6), (8, 8, 7, 9), (5, 4, 0, 11),
(1, 5, 2, 2), (9, 1, 4, 12), (8, 3, 6, 6), (7, 0, 3, 7),
(4, 7, 7, 5), (0, 12, 1, 11), (2, 9, 9, 0), (6, 8, 5, 3),
(3, 10, 8, 2))
_bits2bars = 'T','D','A','F'
horizontalClearZone = property(lambda self: self.scale('hcz',self.dimensions,self.widthScale))
verticalClearZone = property(lambda self: self.scale('vcz',self.dimensions,self.heightScale))
pitch = property(lambda self: self.scale('pitch',self.dimensions,self.widthScale))
barWidth = property(lambda self: self.scale('width',self.dimensions,self.widthScale))
barHeight = property(lambda self: self.scale('F',self.tops,self.heightScale) - self.scale('F',self.bottoms,self.heightScale))
widthScale = property(lambda self: min(1,max(0,self.widthSize)))
heightScale = property(lambda self: min(1,max(0,self.heightSize)))
def width(self):
self.computeSize()
return self._width
width = property(width)
def height(self):
self.computeSize()
return self._height
height = property(height)
def computeSize(self):
if not getattr(self,'_sized',None):
ws = self.widthScale
hs = self.heightScale
barHeight = self.barHeight
barWidth = self.barWidth
pitch = self.pitch
hcz = self.horizontalClearZone
vcz = self.verticalClearZone
self._width = 2*hcz + barWidth + 64*pitch
self._height = 2*vcz+barHeight
if self.humanReadable:
self._height += self.fontSize*1.2+vcz
self._sized = True
def wrap(self,aW,aH):
self.computeSize()
return self.width, self.height
def _getBarVInfo(self,y0=0):
vInfo = {}
hs = self.heightScale
for b in ('T','D','A','F'):
y = self.scale(b,self.bottoms,hs)+y0
vInfo[b] = y,self.scale(b,self.tops,hs)+y0 - y
return vInfo
def draw(self):
self.computeSize()
hcz = self.horizontalClearZone
vcz = self.verticalClearZone
bw = self.barWidth
x = hcz
y0 = vcz+self.barHeight*0.5
dw = self.pitch
vInfo = self._getBarVInfo(y0)
for b in self.barcodes:
yb, hb = vInfo[b]
self.rect(x,yb,bw,hb)
x += dw
self.drawHumanReadable()
def value(self):
tracking = self.tracking
routing = self.routing
routing = routing and (routing,) or ()
return ' '.join((tracking[0:2],tracking[2:5],tracking[5:11],tracking[11:])+routing)
value = property(value,lambda self,value: self.__dict__.__setitem__('tracking',value))
def drawHumanReadable(self):
if self.humanReadable:
hcz = self.horizontalClearZone
vcz = self.verticalClearZone
fontName = self.fontName
fontSize = self.fontSize
y = self.barHeight+2*vcz+0.2*fontSize
self.annotate(hcz,y,self.value,fontName,fontSize)
def annotate(self,x,y,text,fontName,fontSize,anchor='middle'):
Barcode.annotate(self,x,y,text,fontName,fontSize,anchor='start')
def _crc11(value):
'''
>>> print ' '.join(hex(_crc11(USPS_4State('01234567094987654321',x).binary)) for x in ('','01234','012345678','01234567891'))
0x51 0x65 0x606 0x751
'''
bytes = hex(int(value))[2:-1]
bytes = '0'*(26-len(bytes))+bytes
gp = 0x0F35
fcs = 0x07FF
data = int(bytes[:2],16)<<5
for b in range(2,8):
if (fcs ^ data)&0x400:
fcs = (fcs<<1)^gp
else:
fcs = fcs<<1
fcs &= 0x7ff
data <<= 1
for x in range(2,2*13,2):
data = int(bytes[x:x+2],16)<<3
for b in range(8):
if (fcs ^ data)&0x400:
fcs = (fcs<<1)^gp
else:
fcs = fcs<<1
fcs &= 0x7ff
data <<= 1
return fcs
def _ru13(i):
'''reverse unsigned 13 bit number
>>> print _ru13(7936), _ru13(31), _ru13(47), _ru13(7808)
31 7936 7808 47
'''
r = 0
for x in range(13):
r <<= 1
r |= i & 1
i >>= 1
return r
def _initNof13Table(N,lenT):
'''create and return table of 13 bit values with N bits on
>>> T = _initNof13Table(5,1287)
>>> print ' '.join('T[%d]=%d' % (i, T[i]) for i in (0,1,2,3,4,1271,1272,1284,1285,1286))
T[0]=31 T[1]=7936 T[2]=47 T[3]=7808 T[4]=55 T[1271]=6275 T[1272]=6211 T[1284]=856 T[1285]=744 T[1286]=496
'''
T = lenT*[None]
l = 0
u = lenT-1
for c in range(8192):
bc = 0
for b in range(13):
bc += (c&(1<<b))!=0
if bc!=N: continue
r = _ru13(c)
if r<c: continue #we already looked at this pair
if r==c:
T[u] = c
u -= 1
else:
T[l] = c
l += 1
T[l] = r
l += 1
assert l==(u+1), 'u+1(%d)!=l(%d) for %d of 13 table' % (u+1,l,N)
return T
def _test():
import doctest
return doctest.testmod()
if __name__ == "__main__":
_test()
|