def _code_bbox(self, codestring):
compact = self.lookup_option('compact')
columns = self.lookup_option('columns')
rowmult = self.lookup_option('rowmult')
rows = self.lookup_option('rows')
eclevel = self.lookup_option('eclevel')
raw = self.lookup_option('raw')
codestring = cap_unescape(codestring)
m = 0
if raw==False:
blen = len(codestring)
if blen%6==0:
m = (blen/6)*5+1
else:
m = ((blen-blen%6)/6)*5+blen%6+1
else:
m = len(codestring)
if eclevel==-1:
if m<=40:
eclevel = 2
elif 41<=m<=160:
eclevel = 3
elif 161<=m<=320:
eclevel = 4
else: # m>=321
eclevel = 5
maxeclevel = int(math.log(928-1-m)/math.log(2))-1
if eclevel>maxeclevel:
eclevel = maxeclevel
k = 2**(eclevel+1)
if columns==0:
columns = int(round(math.sqrt((m+k)/3)))
if 1<=columns<=30:
c = columns
else:
raise ValueError(u'Column out of bound: %d.' %(columns))
r = int(math.ceil((m+k+1)/(1.0*columns)))
if r<rows and rows<=90:
r = rows
if r<3:
r = 3
maxeclevel = int(math.log(c*r-1-m)/math.log(2))-1
if maxeclevel>eclevel:
eclevel = maxeclevel
k = 2**(eclevel+1)
if compact:
rwid = 17*c+17+17+1
else:
rwid = 17*c+17+17+17+17+1
return (0, 0, DPI*rwid/72.0, DPI*(r/72.0)*rowmult)
def _code_bbox(self, codestring):
rows = self.lookup_option('rows')
columns = self.lookup_option('columns')
prefix = self.lookup_option('prefix')
encoding = self.lookup_option('encoding')
raw = self.lookup_option('raw')
parse = self.lookup_option('parse')
parsefnc = self.lookup_option('parse')
if parse==True:
codestring = cap_unescape(codestring)
premaps = dict(FNC1=[232], PROG=[234], MAC5=[236], MAC6=[237])
precws = premaps.get(prefix, [])
prelen = len(precws)
barlen = len(codestring)
cw_length = 0
if raw==True:
encoding = 'raw'
if encoding=='raw':
cw_length = barlen/4+prelen
elif encoding=='ascii':
# BY sub(), codestring NO LONGER CARRY ACTUAL MESSAGE.
if parsefnc==True:
cw_length += len(re.findall(r'(?<!\^)\^FNC1', codestring))
codestring = re.sub(r'(?<!\^)\^FNC1', '', codestring)
codestring.replace('^^', '^')
residue = codestring
while residue:
if residue[:2].isdigit():
cw_length+=2
residue = residue[2:]
continue
elif residue[0].isdigit():
cw_length+=1
residue = residue[1:]
continue
elif ord(residue[0])<128:
cw_length+=1
residue = residue[1:]
continue
else:
cw_length+=2
residue = residue[1:]
elif encoding in ['c40', 'text', 'x12']:
enc_props = dict(
c40=dict(
mode=230, eightbits=True,
charmap=(
'404142434445464748494a4b4c4d4e4f'
'505152535455565758595a5b5c5d5e5f'
'03808182838485868788898a8b8c8d8e'
'0405060708090a0b0c0d8f9091929394'
'950e0f101112131415161718191a1b1c'
'1d1e1f2021222324252627969798999a'
'c0c1c2c3c4c5c6c7c8c9cacbcccdcecf'
'd0d1d2d3d4d5d6d7d8d9dadbdcdddedf')),
text=dict(
mode=239, eightbits=True,
charmap=(
'404142434445464748494a4b4c4d4e4f'
'505152535455565758595a5b5c5d5e5f'
'03808182838485868788898a8b8c8d8e'
'0405060708090a0b0c0d8f9091929394'
'95c1c2c3c4c5c6c7c8c9cacbcccdcecf'
'd0d1d2d3d4d5d6d7d8d9da969798999a'
'c00e0f101112131415161718191a1b1c'
'1d1e1f2021222324252627dbdcdddedf')),
x12=dict(
mode=238, eightbits=False,
parsefnc=False,
charmap=(
'ffffffffffffffffffffffffff00ffff'
'ffffffffffffffffffffffffffffffff'
'03ffffffffffffffffff01ffffffffff'
'0405060708090a0b0c0dffffffff02ff'
'ff0e0f101112131415161718191a1b1c'
'1d1e1f2021222324252627ffffffffff'
'ffffffffffffffffffffffffffffffff'
'ffffffffffffffffffffffffffffffff')))
parsefnc = enc_props.get('parsefnc', parsefnc)
mode = enc_props.get('mode')
eightbits = enc_props.get('eightbits')
charmap = enc_props.get('charmap')
if parsefnc==True:
cw_length += 2*len(
re.findall(r'(?<!\^)\^FNC1', codestring))
codestring = re.sub(r'(?<!\^)\^FNC1', '', codestring)
codestring.replace('^^', '^')
residue = codestring
while residue:
ch, residue = residue[:1], residue[1:]
if eightbits and ord(ch)>127:
cw_length+=2
continue
if 0<ord(ch)<128:
m_ord = int(charmap[ord(ch)*2:ord(ch)*2+2], 16)
if m_ord!=255:
if ((m_ord>>6)-1)!=0:
cw_length+=1
else:
pass
else:
raise ValueError(
'Invalid character in X12 encoding')
# pad for triples
if (cw_length%3):
cw_length+=(3-cw_length%3)
# triples->2bytes
cw_length = (cw_length/3)*2+prelen+1
else:
raise ValueError('invalid encoding (%s).' %encoding)
ucols = rows
urows = columns
for rows, cols, regh, regv, rscw, rsbl in metrics:
mrows = rows - (2*regh)
mcols = cols - (2*regv)
rrows = mrows//regh
rcols = mcols//regv
ncws = mrows*mcols//8-rscw
if cw_length>ncws:
continue
if urows and urows!=rows:
continue
if ucols and ucols!=cols:
continue
break
return (0, 0, DPI*cols/72.0*2, DPI*rows/72.0*2)
