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https://github.com/IfcOpenShell/IfcOpenShell.git
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johltn
65 lines
1.8 KiB
Python
65 lines
1.8 KiB
Python
from math import pi
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prefixes = {'EXA': 1e18, 'PETA': 1e15, 'TERA': 1e12, 'GIGA': 1e9, 'MEGA':
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1e6, 'KILO': 1e3, 'HECTO': 1e2, 'DECA': 1e1, 'DECI': 1e-1, 'CENTI':
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1e-2, 'MILLI': 1e-3, 'MICRO': 1e-6, 'NANO': 1e-9, 'PICO': 1e-12,
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'FEMTO': 1e-15, 'ATTO': 1e-18}
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unit_names = ['AMPERE', 'BECQUEREL', 'CANDELA', 'COULOMB',
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'CUBIC_METRE', 'DEGREE CELSIUS', 'FARAD', 'GRAM', 'GRAY', 'HENRY',
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'HERTZ', 'JOULE', 'KELVIN', 'LUMEN', 'LUX', 'MOLE', 'NEWTON', 'OHM',
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'PASCAL', 'RADIAN', 'SECOND', 'SIEMENS', 'SIEVERT', 'SQUARE METRE',
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'METRE', 'STERADIAN', 'TESLA', 'VOLT', 'WATT', 'WEBER']
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si_conversions = {
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'inch': 0.0254,
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'foot': 0.3048,
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'yard': 0.914,
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'mile': 1609,
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'square inch': 0.0006452,
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'square foot': 0.09290,
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'square yard': 0.83612736,
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'acre': 4046.86,
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'square mile': 2588881,
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'cubic inch': 0.00001639,
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'cubic foot': 0.02832,
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'cubic yard': 0.7636,
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'litre': 0.001,
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'fluid ounce UK': 0.0000284130625,
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'fluid ounce US': 0.00002957353,
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'pint UK': 0.000568,
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'pint US': 0.000473,
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'gallon UK': 0.004546,
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'gallon US': 0.003785,
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'degree': pi/180,
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'ounce': 0.02835,
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'pound': 0.454,
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'ton UK': 1016.0469088,
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'ton US': 907.18474,
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'lbf': 4.4482216153,
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'kip': 4448.2216153,
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'psi': 6894.7572932,
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'ksi': 6894757.2932,
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'minute': 60,
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'hour': 3600,
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'day': 86400,
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'btu': 1055.056}
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def get_prefix(text):
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for prefix in prefixes.keys():
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if prefix in text.upper():
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return prefix
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def get_prefix_multiplier(text):
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if not text:
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return 1
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prefix = get_prefix(text)
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if prefix:
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return prefixes[prefix]
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return 1
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def get_unit_name(text):
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for name in unit_names:
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if name in text.upper().replace('METER', 'METRE'):
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return name
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