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