functions.py

# -*- coding: utf-8 -*-
import socket

"""
Mapping characters against LCD font from luma.core.legacy.
https://github.com/rm-hull/luma.core/blob/master/luma/core/legacy/font.py
"""
def cleanMessage(message):
        # Replace smileys
        message = message.replace('☺', chr(1))
        message = message.replace('☻', chr(2))
        message = message.replace('♥', chr(3))
        message = message.replace('❤', chr(3))
        message = message.replace('♦', chr(4))
        message = message.replace('♣', chr(5))
        message = message.replace('♠', chr(6))
        message = message.replace('♪', chr(13))
        message = message.replace('♫', chr(14))
        message = message.replace('►', chr(16))
        message = message.replace('◄', chr(17))
        message = message.replace('▲', chr(30))
        message = message.replace('▼', chr(31))
        message = message.replace('…', '...')
        message = message.replace('\n', ' ')

        # Replace german special characters
        message = message.replace('ß', chr(225))
        message = message.replace('Ä', chr(142))
        message = message.replace('Ü', chr(154))
        message = message.replace('Ö', chr(153))
        message = message.replace('ä', chr(132))
        message = message.replace('ü', chr(129))
        message = message.replace('ö', chr(148))

        return message

"""
Get the IP address.
https://stackoverflow.com/a/28950776
"""
def getIP():
    s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
    try:
        # doesn't even have to be reachable
        s.connect(('10.255.255.255', 1))
        IP = s.getsockname()[0]
    except:
        IP = '127.0.0.1'
    finally:
        s.close()
    return IP