2018-01-07 14:09:40 +01:00
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#!/usr/bin/python
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# -*- coding: utf-8 -*-
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"""!
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____ ____ ______ __ __ __ _____
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/ __ )/ __ \/ ___/ | / /___ _/ /______/ /_ |__ /
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/ __ / / / /\__ \| | /| / / __ `/ __/ ___/ __ \ /_ <
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/ /_/ / /_/ /___/ /| |/ |/ / /_/ / /_/ /__/ / / / ___/ /
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/_____/\____//____/ |__/|__/\__,_/\__/\___/_/ /_/ /____/
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German BOS Information Script
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by Bastian Schroll
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@file: zvei.py
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@date: 05.01.2018
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@author: Bastian Schroll
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@description: Decoder class for zvei
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"""
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import logging
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import re
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from boswatch.packet import packet
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logging.debug("- %s loaded", __name__)
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2018-09-09 16:17:49 +02:00
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class ZveiDecoder:
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2018-01-07 14:09:40 +01:00
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"""!ZVEI decoder class
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This class decodes ZVEI data.
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2018-02-03 22:32:28 +01:00
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First step is to validate the data and _check if the format is correct.
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2018-01-07 14:09:40 +01:00
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After that the double-tone-sign 'E' is replaced.
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In the last step a valid BOSWatch packet is created and returned"""
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2018-01-08 07:56:10 +01:00
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@staticmethod
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2018-01-08 07:58:33 +01:00
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def decode(data):
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2018-01-07 14:09:40 +01:00
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"""!Decodes ZVEI
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@param data: ZVEI for decoding
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@return BOSWatch ZVEI packet or None"""
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if re.search("[0-9E]{5}", data[7:12]):
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logging.debug("found valid ZVEI")
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bwPacket = packet.Packet()
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2018-01-09 11:33:23 +01:00
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bwPacket.set("mode", "zvei")
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2018-09-09 16:17:49 +02:00
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bwPacket.set("zvei", ZveiDecoder._solveDoubleTone(data[7:12]))
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2018-01-07 14:09:40 +01:00
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logging.debug(bwPacket)
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return bwPacket
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logging.warning("no valid data")
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return None
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@staticmethod
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def _solveDoubleTone(data):
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"""!Remove the doubleTone sign (here its the 'E')
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@param data: ZVEI for double tone sign replacement
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@return Double Tone replaced ZVEI"""
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if "E" in data:
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data_old = data
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for i in range(1, len(data)):
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if data[i] == "E":
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data = data.replace("E", data[i - 1], 1)
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logging.debug("solve doubleTone: %s -> %s", data_old, data)
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return data
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