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Feature/check barcodes (#255)

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* add a method to check barcode code format

ensure that the code to print is compatible with the ESC/POS formats and
also automatically check this format before printing (barcode() method).

* rewrite test using pytest's parametrize functionality

* add test for the 'check' argument

* update authors list
This commit is contained in:
Lucy Linder
2017-10-08 20:05:18 +02:00
committed by Patrick Kanzler
parent d78a6f1699
commit 456f5b7aa6
6 changed files with 187 additions and 12 deletions
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18
src/escpos/constants.py
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@@ -225,6 +225,24 @@ BARCODE_TYPE_B = {
'GS1 DATABAR EXPANDED': _SET_BARCODE_TYPE(78),
}
BARCODE_FORMATS = {
'UPC-A': ([(11, 12)], "^[0-9]{11,12}$"),
'UPC-E': ([(7, 8), (11, 12)], "^([0-9]{7,8}|[0-9]{11,12})$"),
'EAN13': ([(12, 13)], "^[0-9]{12,13}$"),
'EAN8': ([(7, 8)], "^[0-9]{7,8}$"),
'CODE39': ([(1, 255)], "^([0-9A-Z \$\%\+\-\.\/]+|\*[0-9A-Z \$\%\+\-\.\/]+\*)$"),
'ITF': ([(2, 255)], "^([0-9]{2})+$"),
'NW7': ([(1, 255)], "^[A-Da-d][0-9\$\+\-\.\/\:]+[A-Da-d]$"),
'CODABAR': ([(1, 255)], "^[A-Da-d][0-9\$\+\-\.\/\:]+[A-Da-d]$"), # Same as NW7
'CODE93': ([(1, 255)], "^[\\x00-\\x7F]+$"),
'CODE128': ([(2, 255)], "^\{[A-C][\\x00-\\x7F]+$"),
'GS1-128': ([(2, 255)], "^\{[A-C][\\x00-\\x7F]+$"), # same as CODE128
'GS1 DATABAR OMNIDIRECTIONAL': ([(13,13)], "^[0-9]{13}$"),
'GS1 DATABAR TRUNCATED': ([(13,13)], "^[0-9]{13}$"), # same as GS1 omnidirectional
'GS1 DATABAR LIMITED': ([(13,13)], "^[01][0-9]{12}$"),
'GS1 DATABAR EXPANDED': ([(2,255)], "^\([0-9][A-Za-z0-9 \!\"\%\&\'\(\)\*\+\,\-\.\/\:\;\<\=\>\?\_\{]+$"),
}
BARCODE_TYPES = {
'A': BARCODE_TYPE_A,
'B': BARCODE_TYPE_B,