pin_print/print.py

import argparse
import sys
import os
import six
from random import randint
from PIL import Image, ImageOps
import curses
import sys, termios, tty, os, time

def getch():
    fd = sys.stdin.fileno()
    old_settings = termios.tcgetattr(fd)
    try:
        tty.setraw(sys.stdin.fileno())
        ch = sys.stdin.read(1)

    finally:
        termios.tcsetattr(fd, termios.TCSADRAIN, old_settings)
    return ch

class Printer():
    ESC = b'\x1B'
    CHANGE_EMULATION = ESC+b'\x7B'+b'\x65'
    LINE_FEED = b'\n'
    CARIDGE_RET = b'\x0D'

    strokes = 0

    def printchar(self,char):
        with open('/dev/usb/lp0', 'wb') as printer:
                    printer.write(self.ESC+b"\x7B"+b"\x41")
                    char=self.strokes*" "+char
                    printer.write(bytes(str(char), 'utf-8'))
                    printer.write(self.ESC+b"\x25"+b"\x46"+b"\x0F"+b"\x00"+b"\x04"+b"\x08"+b"\x00")
                    self.strokes += 1
                    if(self.strokes>78):
                        printer.write(self.LINE_FEED)
                        self.strokes = 0

    def newline(self):
        global strokes
        with open('/dev/usb/lp0', 'wb') as printer:
                    printer.write(self.LINE_FEED)
                    self.strokes = 0


def waitforinput():
    while True:
        char = getch()

        if (ord(char) == 27):
            print("exited publication :-(")
            exit(0)
        if (ord(char) == 13):
            printer.newline()
        else:
            printer.printchar(char)


print("POETIC SOFTWARE")
print("Let's boot into this publication together?")
print("cancel [ok]")
printer = Printer()
waitforinput()