73 lines
2.1 KiB
Python
73 lines
2.1 KiB
Python
#!/usr/bin/env python3
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# -*- coding: utf-8 -*-
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############################################################################
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# Copyright (C) GFZ Potsdam #
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# All rights reserved. #
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# #
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# GNU Affero General Public License Usage #
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# This file may be used under the terms of the GNU Affero #
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# Public License version 3.0 as published by the Free Software Foundation #
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# and appearing in the file LICENSE included in the packaging of this #
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# file. Please review the following information to ensure the GNU Affero #
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# Public License version 3.0 requirements will be met: #
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# https://www.gnu.org/licenses/agpl-3.0.html. #
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############################################################################
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import sys
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import os
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import struct
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_doy = (0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 365)
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def _is_leap(y):
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"""True if y is a leap year."""
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return (y % 400 == 0) or (y % 4 == 0 and y % 100 != 0)
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def _ldoy(y, m):
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"""The day of the year of the first day of month m, in year y.
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Note: for January, m=1; for December, m=12.
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Examples:
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_ldoy(1900, 4) = 90
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_ldoy(1900, 1) = 0
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_ldoy(1999, 4) = 90
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_ldoy(2004, 4) = 91
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_ldoy(2000, 4) = 91
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"""
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return _doy[m - 1] + (_is_leap(y) and m >= 3)
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def _mdy2dy(month, day, year):
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return _ldoy(year, month) + day
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class Seedlink(object):
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def __init__(self):
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self.__fd = os.fdopen(63, "wb")
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def send_raw3(self, sta, cha, t, usec_corr, tqual, data):
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packet = struct.pack(
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"@i10s10s9i%di" % len(data),
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8,
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sta.encode(),
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cha.encode(),
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t.year,
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_mdy2dy(t.month, t.day, t.year),
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t.hour,
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t.minute,
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t.second,
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t.microsecond,
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usec_corr,
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tqual,
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len(data),
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*data
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)
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self.__fd.write(packet)
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self.__fd.flush()
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