/usr/share/pyshared/reportlab/graphics/barcode/eanbc.py is in python-reportlab 2.5-1.1build1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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'Ean13BarcodeWidget','isEanString',
)
from reportlab.graphics.shapes import Group, String, Rect
from reportlab.lib import colors
from reportlab.pdfbase.pdfmetrics import stringWidth
from reportlab.lib.validators import isNumber, isColor, isString, Validator, isBoolean
from reportlab.lib.attrmap import *
from reportlab.graphics.charts.areas import PlotArea
from reportlab.lib.units import mm
#work out a list of manufacturer codes....
_eanNumberSystems = [
('00-13', 'USA & Canada'),
('20-29', 'In-Store Functions'),
('30-37', 'France'),
('40-44', 'Germany'),
('45', 'Japan (also 49)'),
('46', 'Russian Federation'),
('471', 'Taiwan'),
('474', 'Estonia'),
('475', 'Latvia'),
('477', 'Lithuania'),
('479', 'Sri Lanka'),
('480', 'Philippines'),
('482', 'Ukraine'),
('484', 'Moldova'),
('485', 'Armenia'),
('486', 'Georgia'),
('487', 'Kazakhstan'),
('489', 'Hong Kong'),
('49', 'Japan (JAN-13)'),
('50', 'United Kingdom'),
('520', 'Greece'),
('528', 'Lebanon'),
('529', 'Cyprus'),
('531', 'Macedonia'),
('535', 'Malta'),
('539', 'Ireland'),
('54', 'Belgium & Luxembourg'),
('560', 'Portugal'),
('569', 'Iceland'),
('57', 'Denmark'),
('590', 'Poland'),
('594', 'Romania'),
('599', 'Hungary'),
('600-601', 'South Africa'),
('609', 'Mauritius'),
('611', 'Morocco'),
('613', 'Algeria'),
('619', 'Tunisia'),
('622', 'Egypt'),
('625', 'Jordan'),
('626', 'Iran'),
('64', 'Finland'),
('690-692', 'China'),
('70', 'Norway'),
('729', 'Israel'),
('73', 'Sweden'),
('740', 'Guatemala'),
('741', 'El Salvador'),
('742', 'Honduras'),
('743', 'Nicaragua'),
('744', 'Costa Rica'),
('746', 'Dominican Republic'),
('750', 'Mexico'),
('759', 'Venezuela'),
('76', 'Switzerland'),
('770', 'Colombia'),
('773', 'Uruguay'),
('775', 'Peru'),
('777', 'Bolivia'),
('779', 'Argentina'),
('780', 'Chile'),
('784', 'Paraguay'),
('785', 'Peru'),
('786', 'Ecuador'),
('789', 'Brazil'),
('80-83', 'Italy'),
('84', 'Spain'),
('850', 'Cuba'),
('858', 'Slovakia'),
('859', 'Czech Republic'),
('860', 'Yugloslavia'),
('869', 'Turkey'),
('87', 'Netherlands'),
('880', 'South Korea'),
('885', 'Thailand'),
('888', 'Singapore'),
('890', 'India'),
('893', 'Vietnam'),
('899', 'Indonesia'),
('90-91', 'Austria'),
('93', 'Australia'),
('94', 'New Zealand'),
('955', 'Malaysia'),
('977', 'International Standard Serial Number for Periodicals (ISSN)'),
('978', 'International Standard Book Numbering (ISBN)'),
('979', 'International Standard Music Number (ISMN)'),
('980', 'Refund receipts'),
('981-982', 'Common Currency Coupons'),
('99', 'Coupons')
]
manufacturerCodes = {}
for (k, v) in _eanNumberSystems:
words = k.split('-')
if len(words)==2:
fromCode = int(words[0])
toCode = int(words[1])
for code in range(fromCode, toCode+1):
manufacturerCodes[code] = v
else:
manufacturerCodes[int(k)] = v
class isEan13String(Validator):
def test(self,x):
return type(x) is str and len(x)<=12 and len([c for c in x if c in "0123456789"])==12
isEan13String = isEan13String()
class Ean13BarcodeWidget(PlotArea):
codeName = "EAN13"
_attrMap = AttrMap(BASE=PlotArea,
value = AttrMapValue(isEan13String, desc='the number'),
fontName = AttrMapValue(isString, desc='fontName'),
fontSize = AttrMapValue(isNumber, desc='font size'),
x = AttrMapValue(isNumber, desc='x-coord'),
y = AttrMapValue(isNumber, desc='y-coord'),
barFillColor = AttrMapValue(isColor, desc='bar color'),
barHeight = AttrMapValue(isNumber, desc='Height of bars.'),
barWidth = AttrMapValue(isNumber, desc='Width of bars.'),
barStrokeWidth = AttrMapValue(isNumber, desc='Width of bar borders.'),
barStrokeColor = AttrMapValue(isColor, desc='Color of bar borders.'),
textColor = AttrMapValue(isColor, desc='human readable text color'),
humanReadable = AttrMapValue(isBoolean, desc='if human readable'),
quiet = AttrMapValue(isBoolean, desc='if quiet zone to be used'),
lquiet = AttrMapValue(isBoolean, desc='left quiet zone length'),
rquiet = AttrMapValue(isBoolean, desc='right quiet zone length'),
)
_digits=12
_start_right = 7 #for ean-13 left = [0:7] right=[7:13]
_nbars = 113
barHeight = 25.93*mm #millimeters
barWidth = (37.29/_nbars)*mm
humanReadable = 1
_0csw = 1
_1csw = 3
#Left Hand Digits.
_left = ( ("0001101", "0011001", "0010011", "0111101",
"0100011", "0110001", "0101111", "0111011",
"0110111", "0001011",
), #odd left hand digits
("0100111", "0110011", "0011011", "0100001",
"0011101", "0111001", "0000101", "0010001",
"0001001", "0010111"), #even left hand digits
)
_right = ("1110010", "1100110", "1101100", "1000010",
"1011100", "1001110", "1010000", "1000100",
"1001000", "1110100")
quiet = 1
rquiet = lquiet = None
_tail = "101"
_sep = "01010"
_lhconvert={
"0": (0,0,0,0,0,0),
"1": (0,0,1,0,1,1),
"2": (0,0,1,1,0,1),
"3": (0,0,1,1,1,0),
"4": (0,1,0,0,1,1),
"5": (0,1,1,0,0,1),
"6": (0,1,1,1,0,0),
"7": (0,1,0,1,0,1),
"8": (0,1,0,1,1,0),
"9": (0,1,1,0,1,0)
}
fontSize = 8 #millimeters
fontName = 'Helvetica'
textColor = barFillColor = colors.black
barStrokeColor = None
barStrokeWidth = 0
x = 0
y = 0
def __init__(self,value='123456789012',**kw):
self.value=max(self._digits-len(value),0)*'0'+value[:self._digits]
for k, v in kw.iteritems():
setattr(self, k, v)
width = property(lambda self: self.barWidth*(self._nbars-18+self._calc_quiet(self.lquiet)+self._calc_quiet(self.rquiet)))
def wrap(self,aW,aH):
return self.width,self.barHeight
def _encode_left(self,s,a):
cp = self._lhconvert[s[0]] #convert the left hand numbers
_left = self._left
z = ord('0')
for i,c in enumerate(s[1:self._start_right]):
a(_left[cp[i]][ord(c)-z])
def _short_bar(self,i):
i += 9 - self._lquiet
return self.humanReadable and ((12<i<55) or (57<i<101))
def _calc_quiet(self,v):
if self.quiet:
if v is None:
v = 9
else:
x = float(max(v,0))/self.barWidth
v = int(x)
if v-x>0: v += 1
else:
v = 0
return v
def draw(self):
g = Group()
gAdd = g.add
barWidth = self.barWidth
width = self.width
barHeight = self.barHeight
x = self.x
y = self.y
gAdd(Rect(x,y,width,barHeight,fillColor=None,strokeColor=None,strokeWidth=0))
s = self.value+self._checkdigit(self.value)
self._lquiet = lquiet = self._calc_quiet(self.lquiet)
rquiet = self._calc_quiet(self.rquiet)
b = [lquiet*'0',self._tail] #the signal string
a = b.append
self._encode_left(s,a)
a(self._sep)
z = ord('0')
_right = self._right
for c in s[self._start_right:]:
a(_right[ord(c)-z])
a(self._tail)
a(rquiet*'0')
fontSize = self.fontSize
barFillColor = self.barFillColor
barStrokeWidth = self.barStrokeWidth
barStrokeColor = self.barStrokeColor
fth = fontSize*1.2
b = ''.join(b)
lrect = None
for i,c in enumerate(b):
if c=="1":
dh = self._short_bar(i) and fth or 0
yh = y+dh
if lrect and lrect.y==yh:
lrect.width += barWidth
else:
lrect = Rect(x,yh,barWidth,barHeight-dh,fillColor=barFillColor,strokeWidth=barStrokeWidth,strokeColor=barStrokeColor)
gAdd(lrect)
else:
lrect = None
x += barWidth
if self.humanReadable: self._add_human_readable(s,gAdd)
return g
def _add_human_readable(self,s,gAdd):
barWidth = self.barWidth
fontSize = self.fontSize
textColor = self.textColor
fontName = self.fontName
fth = fontSize*1.2
# draw the num below the line.
c = s[0]
w = stringWidth(c,fontName,fontSize)
x = self.x+barWidth*(self._lquiet-8)
y = self.y + 0.2*fth
gAdd(String(x,y,c,fontName=fontName,fontSize=fontSize,fillColor=textColor))
x = self.x + (33-9+self._lquiet)*barWidth
c = s[1:7]
gAdd(String(x,y,c,fontName=fontName,fontSize=fontSize,fillColor=textColor,textAnchor='middle'))
x += 47*barWidth
c = s[7:]
gAdd(String(x,y,c,fontName=fontName,fontSize=fontSize,fillColor=textColor,textAnchor='middle'))
def _checkdigit(cls,num):
z = ord('0')
iSum = cls._0csw*sum([(ord(x)-z) for x in num[::2]]) \
+ cls._1csw*sum([(ord(x)-z) for x in num[1::2]])
return chr(z+((10-(iSum%10))%10))
_checkdigit=classmethod(_checkdigit)
class isEan8String(Validator):
def test(self,x):
return type(x) is str and len(x)<=7 and len([c for c in x if c in "0123456789"])==7
isEan8String = isEan8String()
class Ean8BarcodeWidget(Ean13BarcodeWidget):
codeName = "EAN8"
_attrMap = AttrMap(BASE=Ean13BarcodeWidget,
value = AttrMapValue(isEan8String, desc='the number'),
)
_start_right = 4 #for ean-13 left = [0:7] right=[7:13]
_nbars = 85
_digits=7
_0csw = 3
_1csw = 1
def _encode_left(self,s,a):
cp = self._lhconvert[s[0]] #convert the left hand numbers
_left = self._left[0]
z = ord('0')
for i,c in enumerate(s[0:self._start_right]):
a(_left[ord(c)-z])
def _short_bar(self,i):
i += 9 - self._lquiet
return self.humanReadable and ((12<i<41) or (43<i<73))
def _add_human_readable(self,s,gAdd):
barWidth = self.barWidth
fontSize = self.fontSize
textColor = self.textColor
fontName = self.fontName
fth = fontSize*1.2
# draw the num below the line.
y = self.y + 0.2*fth
x = (26.5-9+self._lquiet)*barWidth
c = s[0:4]
gAdd(String(x,y,c,fontName=fontName,fontSize=fontSize,fillColor=textColor,textAnchor='middle'))
x = (59.5-9+self._lquiet)*barWidth
c = s[4:]
gAdd(String(x,y,c,fontName=fontName,fontSize=fontSize,fillColor=textColor,textAnchor='middle'))
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