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python-pharma_datamatrix
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v1.2 

Added support for PPN code.
This commit is contained in:
PinchofLogic 2021-08-17 23:48:34 +01:00 committed by GitHub
parent 1442b4e3b8
commit fe858f0f4d
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4 changed files with 160 additions and 64 deletions
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75
gs1_gtin.py Normal file
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@ -0,0 +1,75 @@
from gs1_gtin_validation import gtin_check #The GTIN validation module
from expiry_date_validation import expiry_date_check #The Expiry validation module
result = {'SCHEME': 'GTIN'}
def gs1_gtin(barcode: str) -> dict:
if chr(29) in barcode:
while barcode:
if barcode[:2] == '01':
result['GTIN'] = barcode[2:16]
if len(barcode) > 16:
barcode = barcode[16:]
else:
barcode = None
elif barcode[:2] == '17':
result['EXPIRY'] = barcode[2:8]
barcode = barcode[8:]
elif barcode[:2] == '10':
if chr(29) in barcode:
for i, c in enumerate(barcode):
if ord(c) == 29:
result['BATCH'] = barcode[2:i]
barcode = barcode[i+1:]
break
else:
result['BATCH'] = barcode[2:]
barcode = None
elif barcode[:2] == '21':
if chr(29) in barcode:
#print("In the serial GS check")
for i, c in enumerate(barcode):
if ord(c) == 29:
result['SERIAL'] = barcode[2:i]
barcode = barcode[i+1:]
break
else:
result['SERIAL'] = barcode[2:]
barcode = None
elif barcode[:3] in ['710', '711', '712', '713', '714']:
if chr(29) in barcode:
for i, c in enumerate(barcode):
if ord(c) == 29:
result['NHRN'] = barcode[3:i]
barcode = barcode[i+1:]
break
else:
result['NHRN'] = barcode[3:]
barcode = None
else:
return f"INVALID BARCODE"
else:
return f"INVALID BARCODE"
if 'GTIN' and 'BATCH' and 'EXPIRY' and 'SERIAL' in result.keys():
if gtin_check(result['GTIN']) == False and expiry_date_check(result['EXPIRY']) == False:
return f'INVALID GTIN & EXPIRY DATE'
elif expiry_date_check(result['EXPIRY']) == False:
return f'INVALID EXPIRY DATE'
elif gtin_check(result['GTIN']) == False:
return f'INVALID GTIN'
else:
return result

3
gs1_gtin_validation.py
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@ -8,5 +8,6 @@ def gtin_check(g: str):
digit_sum = (int(g[0]) * 3) + int(g[1]) + (int(g[2]) * 3) + int(g[3]) + (int(g[4]) * 3) + int(g[5]) + (int(g[6]) * 3) + int(g[7]) + (int(g[8]) * 3) + int(g[9]) + (int(g[10]) * 3) + int(g[11]) + (int(g[12]) * 3)
nearest_ten = round(digit_sum/10) * 10
check_sum_digit = nearest_ten - digit_sum
if check_sum_digit < 0:
check_sum_digit = 10 + check_sum_digit
return check_sum_digit == int(g[-1])

67
ifa_ppn.py Normal file
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@ -0,0 +1,67 @@
from expiry_date_validation import expiry_date_check #The Expiry validation module
result = {'SCHEME': 'PPN'}
def ifa_ppn(barcode: str) -> dict:
while barcode:
if barcode[:2] == '9N':
result['PPN'] = barcode[2:14]
if len(barcode) > 14:
barcode = barcode[15:]
else:
barcode = None
elif barcode[:1] == 'D':
result['EXPIRY'] = barcode[1:7]
if len(barcode) > 7:
barcode = barcode[8:]
else:
barcode = None
elif barcode[:2] == '1T':
if chr(29) in barcode:
for i, c in enumerate(barcode):
if ord(c) == 29:
result['BATCH'] = barcode[2:i]
barcode = barcode[i+1:]
break
else:
for i, c in enumerate(barcode):
if ord(c) == 30:
result['BATCH'] = barcode[2:i]
barcode = None
elif barcode[:1] == 'S':
if chr(29) in barcode:
for i, c in enumerate(barcode):
if ord(c) == 29:
result['SERIAL'] = barcode[1:i]
barcode = barcode[i+1:]
break
else:
for i, c in enumerate(barcode):
if ord(c) == 30:
result['SERIAL'] = barcode[1:i]
barcode = None
elif barcode[:2] == '8P':
result['GTIN'] = barcode[2:16]
if len(barcode) > 16:
barcode = barcode[17:]
else:
barcode = None
else:
return f"INVALID BARCODE"
if 'PPN' and 'BATCH' and 'EXPIRY' and 'SERIAL' in result.keys():
if expiry_date_check(result['EXPIRY']) == False:
return f'INVALID EXPIRY DATE'
else:
return result
else:
return f'INVALID BARCODE'

79
pharma_datamatrix.py
View File

@ -11,8 +11,9 @@ The barcode scanners in the default setup outputs the scan is in below format:
The symbology identifier ]d2 and for the second FNC1, when used as a separator character is <GS> Group-Separator.
"""
from .gs1_gtin_validation import gtin_check #The GTIN validation module
from .expiry_date_validation import expiry_date_check #The Expiry validation module
from gs1_gtin import gs1_gtin
from ifa_ppn import ifa_ppn
def pharma_datamatrix(barcode: str, validation: bool = False) -> dict:
"""
@ -23,67 +24,19 @@ def pharma_datamatrix(barcode: str, validation: bool = False) -> dict:
Returns:
dict: Returns dictionary object with GTIN, EXPIRY, BATCH, SERIAL & NHRN as keys.
"""
result = dict()
result['NHRN'] = None
if barcode[:3] == ']d2': #Most barcode scanners prepend ']d2' identifier for the GS1 datamatrix. This senction removes the identifier.
barcode = barcode[3:]
while barcode:
barcode = barcode[3:]
result = gs1_gtin(barcode)
elif barcode[:2] in ['01', '21', '17', '10', '71']:
result = gs1_gtin(barcode)
if barcode[:2] == '01':
result['GTIN'] = barcode[2:16]
barcode = barcode[16:]
elif barcode[:2] == '17':
result['EXPIRY'] = barcode[2:8]
barcode = barcode[8:]
elif barcode[:2] == '10':
if chr(29) in barcode:
for i, c in enumerate(barcode):
if ord(c) == 29:
result['BATCH'] = barcode[2:i]
barcode = barcode[i+1:]
break
else:
result['BATCH'] = barcode[2:]
barcode = None
elif barcode[:2] == '21':
if chr(29) in barcode:
#print("In the serial GS check")
for i, c in enumerate(barcode):
if ord(c) == 29:
result['SERIAL'] = barcode[2:i]
barcode = barcode[i+1:]
break
else:
result['SERIAL'] = barcode[2:]
barcode = None
elif barcode[:3] in ['710', '711', '712', '713', '714']:
if chr(29) in barcode:
for i, c in enumerate(barcode):
if ord(c) == 29:
result['NHRN'] = barcode[2:i]
barcode = barcode[i+1:]
break
else:
result['NHRN'] = barcode[2:]
barcode = None
else:
return f"INVALID BARCODE"
# If the validtion is set to "True", below section is processed. Perform validation checks on GTIN and Expriry Date
if validation:
if gtin_check(result['GTIN']) == False and expiry_date_check(result['EXPIRY']) == False:
return f'INVALID GTIN & EXPIRY DATE'
elif expiry_date_check(result['EXPIRY']) == False:
return f'INVALID EXPIRY DATE'
elif gtin_check(result['GTIN']) == False:
return f'INVALID GTIN'
else:
return result
elif barcode[:6] == '[)>'+chr(30)+'06':
barcode = barcode[7:] # Removes the leading ASCII seperator after the scheme identifier.
result = ifa_ppn(barcode)
else:
return result
result = f"01 INVALID BARCODE"
return result