python-escpos/examples/codepage_tables.py

67 lines
1.5 KiB
Python

"""Prints code page tables.
"""
from __future__ import absolute_import
from __future__ import division
from __future__ import print_function
from __future__ import unicode_literals
import sys
from escpos import printer
from escpos.constants import CODEPAGE_CHANGE, CTL_CR, CTL_FF, CTL_HT, CTL_LF, CTL_VT, ESC
import six
def main():
dummy = printer.Dummy()
dummy.hw('init')
for codepage in sys.argv[1:] or ['USA']:
dummy.set(height=2, width=2)
dummy._raw(codepage + '\n\n\n')
print_codepage(dummy, codepage)
dummy._raw('\n\n')
dummy.cut()
print(dummy.output)
def print_codepage(printer, codepage):
if codepage.isdigit():
codepage = int(codepage)
printer._raw(CODEPAGE_CHANGE + six.int2byte(codepage))
printer._raw('after')
else:
printer.charcode(codepage)
sep = ''
# Table header
printer.set(font='b')
printer._raw(' {}\n'.format(sep.join(map(lambda s: hex(s)[2:], range(0, 16)))))
printer.set()
# The table
for x in range(0, 16):
# First column
printer.set(font='b')
printer._raw('{} '.format(hex(x)[2:]))
printer.set()
for y in range(0, 16):
byte = six.int2byte(x * 16 + y)
if byte in (ESC, CTL_LF, CTL_FF, CTL_CR, CTL_HT, CTL_VT):
byte = ' '
printer._raw(byte)
printer._raw(sep)
printer._raw('\n')
if __name__ == '__main__':
main()