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# SOFTWARE HISTORY |
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# Date Ticket# Engineer Description |
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# ------------ ---------- ----------- -------------------------- |
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# ??/??/?? xxxxxxxx Initial Creation. |
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# 01/22/14 2667 bclement fixed millisecond support |
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# 02/28/14 2667 bclement constructor can take extra micros for start and end |
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# 06/24/15 4480 dgilling fix __eq__. |
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# |
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# |
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import calendar |
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import datetime |
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import time |
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MAX_TIME = 2147483647 |
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MICROS_IN_SECOND = 1000000 |
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View Code Duplication |
class TimeRange(object): |
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def __init__(self, start=None, end=None, startExtraMicros=None, endExtraMicros=None): |
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self.start = self.__convertToDateTimeWithExtra(start, startExtraMicros) |
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self.end = self.__convertToDateTimeWithExtra(end, endExtraMicros) |
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def __str__(self): |
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return self.__repr__() |
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def __repr__(self): |
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return "(" + self.start.strftime("%b %d %y %H:%M:%S %Z") + ", " + \ |
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self.end.strftime("%b %d %y %H:%M:%S %Z") + ")" |
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def __eq__(self, other): |
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if not isinstance(self, type(other)): |
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return False |
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if self.isValid() and other.isValid(): |
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return self.getStart() == other.getStart() and self.getEnd() == other.getEnd() |
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elif not self.isValid() and not other.isValid(): |
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return True |
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else: |
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return False |
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def __ne__(self, other): |
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return not self.__eq__(other) |
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def __convertToDateTimeWithExtra(self, timeArg, extraMicros): |
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rval = self.__convertToDateTime(timeArg) |
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if rval is not None and extraMicros is not None: |
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rval = rval + datetime.timedelta(microseconds=extraMicros) |
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return rval |
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def __convertToDateTime(self, timeArg): |
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if timeArg is None: |
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return None |
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if isinstance(timeArg, datetime.datetime): |
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return timeArg |
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elif isinstance(timeArg, time.struct_time): |
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return datetime.datetime(*timeArg[:6]) |
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elif isinstance(timeArg, float): |
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# seconds as float, should be avoided due to floating point errors |
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totalSecs = int(timeArg) |
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micros = int((timeArg - totalSecs) * MICROS_IN_SECOND) |
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return self.__convertSecsAndMicros(totalSecs, micros) |
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elif isinstance(timeArg, int): |
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# seconds as integer |
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totalSecs = timeArg |
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return self.__convertSecsAndMicros(totalSecs, 0) |
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else: |
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return None |
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def __convertSecsAndMicros(self, seconds, micros): |
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if seconds < MAX_TIME: |
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rval = datetime.datetime.utcfromtimestamp(seconds) |
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else: |
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extraTime = datetime.timedelta(seconds=(seconds - MAX_TIME)) |
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rval = datetime.datetime.utcfromtimestamp(MAX_TIME) + extraTime |
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return rval.replace(microsecond=micros) |
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def getStart(self): |
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return self.start.utctimetuple() |
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def getStartInMillis(self): |
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return self._getInMillis(self.start) |
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def setStart(self, start, extraMicros=None): |
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self.start = self.__convertToDateTimeWithExtra(start, extraMicros) |
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def getEnd(self): |
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return self.end.utctimetuple() |
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def getEndInMillis(self): |
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return self._getInMillis(self.end) |
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def _getInMillis(self, time): |
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rval = int(calendar.timegm(time.utctimetuple()) * 1000) |
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rval += time.microsecond // 1000 |
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return rval |
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def setEnd(self, end, extraMicros=None): |
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self.end = self.__convertToDateTimeWithExtra(end, extraMicros) |
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def duration(self): |
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delta = self.end - self.start |
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return int(delta.total_seconds()) |
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def contains(self, timeArg): |
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if isinstance(timeArg, TimeRange): |
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if self.duration() == 0: |
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return self.__eq__(timeArg) |
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elif timeArg.duration() == 0: |
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return self.contains(timeArg.start) |
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return timeArg.start >= self.start and timeArg.end <= self.end |
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else: |
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convTime = self.__convertToDateTime(timeArg) |
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if not isinstance(convTime, datetime.datetime): |
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raise TypeError("Invalid type for argument time specified to TimeRange.contains().") |
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if self.duration() != 0: |
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return self.start <= convTime < self.end |
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return convTime == self.start |
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def isValid(self): |
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return bool(self.start != self.end) |
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def overlaps(self, timeRange): |
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return timeRange.contains(self.start) or self.contains(timeRange.start) |
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def combineWith(self, timeRange): |
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if self.isValid() and timeRange.isValid(): |
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newStart = min(self.start, timeRange.start) |
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newEnd = max(self.end, timeRange.end) |
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return TimeRange(newStart, newEnd) |
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elif self.isValid(): |
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return self |
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return timeRange |
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@staticmethod |
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def allTimes(): |
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return TimeRange(0, MAX_TIME) |
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Unidata /
python-awips
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