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