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108 lines
3.3 KiB
Python
108 lines
3.3 KiB
Python
from hachoir.core.tools import (humanDatetime, humanDuration,
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timestampUNIX, timestampMac32, timestampUUID60,
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timestampWin64, durationWin64, durationMillisWin64)
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from hachoir.field import Bits, FieldSet
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from datetime import datetime
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class GenericTimestamp(Bits):
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def __init__(self, parent, name, size, description=None):
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Bits.__init__(self, parent, name, size, description)
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def createDisplay(self):
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return humanDatetime(self.value)
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def createRawDisplay(self):
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value = Bits.createValue(self)
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return str(value)
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def __bool__(self):
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return Bits.createValue(self) != 0
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def timestampFactory(cls_name, handler, size):
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class Timestamp(GenericTimestamp):
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def __init__(self, parent, name, description=None):
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GenericTimestamp.__init__(self, parent, name, size, description)
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def createValue(self):
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value = Bits.createValue(self)
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return handler(value)
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cls = Timestamp
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cls.__name__ = cls_name
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return cls
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TimestampUnix32 = timestampFactory("TimestampUnix32", timestampUNIX, 32)
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TimestampUnix64 = timestampFactory("TimestampUnix64", timestampUNIX, 64)
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TimestampMac32 = timestampFactory("TimestampMac32", timestampMac32, 32)
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TimestampUUID60 = timestampFactory("TimestampUUID60", timestampUUID60, 60)
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TimestampWin64 = timestampFactory("TimestampWin64", timestampWin64, 64)
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class TimeDateMSDOS32(FieldSet):
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"""
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32-bit MS-DOS timestamp (16-bit time, 16-bit date)
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"""
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static_size = 32
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def createFields(self):
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# TODO: Create type "MSDOS_Second" : value*2
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yield Bits(self, "second", 5, "Second/2")
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yield Bits(self, "minute", 6)
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yield Bits(self, "hour", 5)
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yield Bits(self, "day", 5)
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yield Bits(self, "month", 4)
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# TODO: Create type "MSDOS_Year" : value+1980
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yield Bits(self, "year", 7, "Number of year after 1980")
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def createValue(self):
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return datetime(
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1980 + self["year"].value, self["month"].value, self["day"].value,
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self["hour"].value, self["minute"].value, 2 * self["second"].value)
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def createDisplay(self):
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return humanDatetime(self.value)
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class DateTimeMSDOS32(TimeDateMSDOS32):
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"""
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32-bit MS-DOS timestamp (16-bit date, 16-bit time)
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"""
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def createFields(self):
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yield Bits(self, "day", 5)
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yield Bits(self, "month", 4)
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yield Bits(self, "year", 7, "Number of year after 1980")
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yield Bits(self, "second", 5, "Second/2")
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yield Bits(self, "minute", 6)
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yield Bits(self, "hour", 5)
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class TimedeltaWin64(GenericTimestamp):
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def __init__(self, parent, name, description=None):
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GenericTimestamp.__init__(self, parent, name, 64, description)
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def createDisplay(self):
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return humanDuration(self.value)
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def createValue(self):
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value = Bits.createValue(self)
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return durationWin64(value)
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class TimedeltaMillisWin64(GenericTimestamp):
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def __init__(self, parent, name, description=None):
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GenericTimestamp.__init__(self, parent, name, 64, description)
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def createDisplay(self):
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return humanDuration(self.value)
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def createValue(self):
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value = Bits.createValue(self)
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return durationMillisWin64(value)
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