54 lines
1.9 KiB
Python
54 lines
1.9 KiB
Python
from collections import namedtuple
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import hashlib
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from pandas import read_csv
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class _ReadOnlyProperty(object):
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def __init__(self, value):
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self.value = value
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def __get__(self, obj, objtype):
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return self.value
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def __Set__(self, obj, value):
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return NotImplementedError("Cannot change a constant.")
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class Constants(object):
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db_location = _ReadOnlyProperty('https://aresvalley.com/Storage/Artemis/Database/data.zip')
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ref_loc = _ReadOnlyProperty('https://aresvalley.com/Storage/Artemis/Database/data.zip.log')
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data_folder = _ReadOnlyProperty('Data')
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spectra_folder = _ReadOnlyProperty('Spectra')
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audio_folder = _ReadOnlyProperty('Audio')
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icons_folder = _ReadOnlyProperty('icons_imgs')
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__Band = namedtuple("Band", ["lower", "upper"])
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__ELF = __Band(0, 30) # Formally it is (3, 30) Hz.
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__SLF = __Band(30, 300)
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__ULF = __Band(300, 3000)
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__VLF = __Band(3000, 30000)
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__LF = __Band(30 * 10**3, 300 * 10**3)
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__MF = __Band(300 * 10 ** 3, 3000 * 10**3)
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__HF = __Band(3 * 10**6, 30 * 10**6)
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__VHF = __Band(30 * 10**6, 300 * 10**6)
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__UHF = __Band(300 * 10**6, 3000 * 10**6)
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__SHF = __Band(3 * 10**9, 30 * 10**9)
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__EHF = __Band(30 * 10**9, 300 * 10**9)
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bands = _ReadOnlyProperty((__ELF, __SLF, __ULF, __VLF, __LF, __MF, __HF, __VHF, __UHF, __SHF, __EHF))
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active_color = _ReadOnlyProperty("#39eaff")
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inactive_color = _ReadOnlyProperty("#9f9f9f")
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conversion_factors = _ReadOnlyProperty({"Hz":1, "kHz":1000, "MHz":1000000, "GHz":1000000000})
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def checksum_ok(data, what):
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code = hashlib.sha256()
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code.update(data)
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if what == "folder":
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n = 0
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elif what == "db":
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n = 1
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else:
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raise ValueError("Wrong entry name.")
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try:
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reference = read_csv(Constants.ref_loc, delimiter = '*').iat[-1, n]
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except HTTPError:
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return False
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return code.hexdigest() == reference |