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70 lines
2.5 KiB
Python
70 lines
2.5 KiB
Python
""" Module foe parsing Satellites.xml
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Transponder parameters:
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polarization: 0 - Horizontal, 1 - Vertical, 2 - Left Circular, 3 - Right Circular
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fec_inner: 0 - Auto, 1 - 1/2, 2 - 2_3, 3 - 3/4, 4 - 5/6, 5 - 6/7, 6 - 7/8, 7 - 8/9, 8 - 3/5, 9 - 4/5, 10 - 9/10
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modulation: 0 - Auto, 1 - QPSK, 2 - 8PSK, 3 - 16APSK, 5 - 32APSK
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rolloff: 0 - 0.35, 1 - 0.25, 2 - 0.20, 3 - Auto
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pilot: 0 - Off, 1 - On, 2 - Auto
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inversion: 0 = Off, 1 = On, 2 = Auto (default)
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system: 0 = DVB-S, 1 = DVB-S2
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is_id: 0 - 255
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pls_mode: 0 - Root, 1 - Gold, 2 - Combo
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pls_code: 0 - 262142
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"""
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from collections import namedtuple
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from xml.dom.minidom import parse
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from main.eparser.__constants import Polarization, FEC, SYSTEM, MODULATION, PlsMode
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# temporary
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__XML_PATH = "../data/satellites.xml"
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Satellite = namedtuple("Satellite", ["name", "flags", "position", "transponders"])
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Transponder = namedtuple("Transponder", ["frequency", "symbol_rate", "polarization", "fec_inner",
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"system", "modulation", "pls_mode", "pls_code", "is_id"])
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def get_transponders(path):
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return parse_satellites(path)
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def parse_transponders(elem):
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""" Parsing satellite transponders """
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transponders = []
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for el in elem.getElementsByTagName("transponder"):
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if el.hasAttributes():
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atr = el.attributes
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tr = Transponder(atr["frequency"].value,
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atr["symbol_rate"].value,
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Polarization(int(atr["polarization"].value)).name,
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FEC[int(atr["fec_inner"].value)],
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SYSTEM[int(atr["system"].value)],
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MODULATION[int(atr["modulation"].value)],
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PlsMode(int(atr["pls_mode"].value)).name if "pls_mode" in atr else None,
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atr["pls_code"].value if "pls_code" in atr else None,
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atr["is_id"].value if "is_id" in atr else None)
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transponders.append(tr)
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return transponders
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def parse_sat(elem):
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""" Parsing satellite """
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return Satellite(elem.attributes["name"].value,
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elem.attributes["flags"].value,
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elem.attributes["position"].value,
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parse_transponders(elem))
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def parse_satellites(path):
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""" Parsing satellites from xml"""
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dom = parse(path)
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satellites = []
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for elem in dom.getElementsByTagName("sat"):
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if elem.hasAttributes():
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satellites.append(parse_sat(elem))
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return satellites
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if __name__ == "__main__":
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pass
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