print-receiptprinter.py

#!/usr/bin/env python3
from escpos import *
import argparse
import os
import sys
import datetime

cli_parser = argparse.ArgumentParser(description='Print to a network ESCPOS receipt printer.')
cli_parser.add_argument('file', help='text file to print')
cli_parser.add_argument('--printer', '-p', default="192.168.1.253", help='IP address or hostname of printer')
cli_parser.add_argument('--nodate', action='store_true', help='Do not print date')
cli_parser.add_argument('--nocut', action='store_true', help='Do not cut at end')
cli_parser.add_argument('--header', action='store_true', help='Print filename as header')
cli_args = cli_parser.parse_args()

def main():
    p = printer.Network(cli_args.printer)

    inputtext = []
    if not os.path.exists(cli_args.file):
        print("File %s does not exist" % cli_args.file, file=sys.stderr)
        exit(1)
    with open(cli_args.file) as textfile:
        inputtext = textfile.readlines()
    if len(inputtext) < 1:
        exit(2)

    if cli_args.header:
        p.control("CR")
        p.control("LF")
        p.set("CENTER", "A", "B")
        p.text(os.path.basename(cli_args.file))
        p.text(" ")
        p.control("CR")
        p.control("LF")
        p.set("LEFT", "B", "normal")
        p.control("CR")
        p.control("LF")

    p.set("LEFT")
    for line in inputtext:
        if line:
            p.text(line)

    p.control("CR")
    p.control("LF")

    if not cli_args.nodate:
        now = datetime.datetime.now()
        p.set("CENTER")
        p.text(now.strftime("%Y-%m-%d %H:%M:%S"))
        p.control("CR")
        p.control("LF")

    if not cli_args.nocut:
        p.cut()

if __name__ == "__main__":
    main()