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# metric prefixes
exa = 1.0e18
peta = 1.0e15
tera = 1.0e12
giga = 1.0e9
mega = 1.0e6
kilo = 1.0e3
milli = 1.0e-3
micro = 1.0e-6
nano = 1.0e-9
pico = 1.0e-12
femto = 1.0e-15
atto = 1.0e-18
# power of 2 prefixes
kibi = 1024
mebi = kibi * 1024
gibi = mebi * 1024
tebi = gibi * 1024
pebi = tebi * 1024
exbi = pebi * 1024
# memory size configuration stuff
def toFloat(value):
if not isinstance(value, str):
raise TypeError, "wrong type '%s' should be str" % type(value)
if value.endswith('Ei'):
return float(value[:-2]) * exbi
elif value.endswith('Pi'):
return float(value[:-2]) * pebi
elif value.endswith('Ti'):
return float(value[:-2]) * tebi
elif value.endswith('Gi'):
return float(value[:-2]) * gibi
elif value.endswith('Mi'):
return float(value[:-2]) * mebi
elif value.endswith('ki'):
return float(value[:-2]) * kibi
elif value.endswith('E'):
return float(value[:-1]) * exa
elif value.endswith('P'):
return float(value[:-1]) * peta
elif value.endswith('T'):
return float(value[:-1]) * tera
elif value.endswith('G'):
return float(value[:-1]) * giga
elif value.endswith('M'):
return float(value[:-1]) * mega
elif value.endswith('k'):
return float(value[:-1]) * kilo
elif value.endswith('m'):
return float(value[:-1]) * milli
elif value.endswith('u'):
return float(value[:-1]) * micro
elif value.endswith('n'):
return float(value[:-1]) * nano
elif value.endswith('p'):
return float(value[:-1]) * pico
elif value.endswith('f'):
return float(value[:-1]) * femto
else:
return float(value)
def toLong(value):
value = toFloat(value)
result = int(value)
if value != result:
raise ValueError, "cannot convert '%s' to long" % value
return result
def toInteger(value):
value = toFloat(value)
result = int(value)
if value != result:
raise ValueError, "cannot convert '%s' to integer" % value
return result
def toBool(value):
if not isinstance(value, str):
raise TypeError, "wrong type '%s' should be str" % type(value)
value = value.lower()
if value == "true" or value == "t" or value == "yes" or value == "y":
return True
elif value == "false" or value == "f" or value == "no" or value == "n":
return False
raise ValueError, "cannot convert '%s' to bool" % value
def toFrequency(value):
if not isinstance(value, str):
raise TypeError, "wrong type '%s' should be str" % type(value)
if value.endswith('THz'):
return float(value[:-3]) * tera
elif value.endswith('GHz'):
return float(value[:-3]) * giga
elif value.endswith('MHz'):
return float(value[:-3]) * mega
elif value.endswith('kHz'):
return float(value[:-3]) * kilo
elif value.endswith('Hz'):
return float(value[:-2])
raise ValueError, "cannot convert '%s' to frequency" % value
def toLatency(value):
if not isinstance(value, str):
raise TypeError, "wrong type '%s' should be str" % type(value)
if value.endswith('ps'):
return float(value[:-2]) * pico
elif value.endswith('ns'):
return float(value[:-2]) * nano
elif value.endswith('us'):
return float(value[:-2]) * micro
elif value.endswith('ms'):
return float(value[:-2]) * milli
elif value.endswith('s'):
return float(value[:-1])
raise ValueError, "cannot convert '%s' to latency" % value
def toClockPeriod(value):
"""result is a clock period"""
if not isinstance(value, str):
raise TypeError, "wrong type '%s' should be str" % type(value)
try:
val = toFrequency(value)
if val != 0:
val = 1 / val
return val
except ValueError:
pass
try:
val = toLatency(value)
return val
except ValueError:
pass
raise ValueError, "cannot convert '%s' to clock period" % value
def toNetworkBandwidth(value):
if not isinstance(value, str):
raise TypeError, "wrong type '%s' should be str" % type(value)
if value.endswith('Tbps'):
return float(value[:-4]) * tera
elif value.endswith('Gbps'):
return float(value[:-4]) * giga
elif value.endswith('Mbps'):
return float(value[:-4]) * mega
elif value.endswith('kbps'):
return float(value[:-4]) * kilo
elif value.endswith('bps'):
return float(value[:-3])
else:
return float(value)
raise ValueError, "cannot convert '%s' to network bandwidth" % value
def toMemoryBandwidth(value):
if not isinstance(value, str):
raise TypeError, "wrong type '%s' should be str" % type(value)
if value.endswith('PB/s'):
return float(value[:-4]) * pebi
elif value.endswith('TB/s'):
return float(value[:-4]) * tebi
elif value.endswith('GB/s'):
return float(value[:-4]) * gibi
elif value.endswith('MB/s'):
return float(value[:-4]) * mebi
elif value.endswith('kB/s'):
return float(value[:-4]) * kibi
elif value.endswith('B/s'):
return float(value[:-3])
raise ValueError, "cannot convert '%s' to memory bandwidth" % value
def toMemorySize(value):
if not isinstance(value, str):
raise TypeError, "wrong type '%s' should be str" % type(value)
if value.endswith('PB'):
return float(value[:-2]) * pebi
elif value.endswith('TB'):
return float(value[:-2]) * tebi
elif value.endswith('GB'):
return float(value[:-2]) * gibi
elif value.endswith('MB'):
return float(value[:-2]) * mebi
elif value.endswith('kB'):
return float(value[:-2]) * kibi
elif value.endswith('B'):
return float(value[:-1])
raise ValueError, "cannot convert '%s' to memory size" % value
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