Time.st
author claus
Thu, 02 Jun 1994 18:22:49 +0200
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 COPYRIGHT (c) 1989 by Claus Gittinger
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              All Rights Reserved
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 This software is furnished under a license and may be used
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 only in accordance with the terms of that license and with the
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 inclusion of the above copyright notice.   This software may not
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 be provided or otherwise made available to, or used by, any
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 other person.  No title to or ownership of the software is
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 hereby transferred.
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AbsoluteTime subclass:#Time
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       instanceVariableNames:''
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       classVariableNames:''
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       poolDictionaries:''
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       category:'Magnitude-General'
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!
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Time comment:'
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COPYRIGHT (c) 1989 by Claus Gittinger
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              All Rights Reserved
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'!
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!Time class methodsFor:'documentation'!
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copyright
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"
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 COPYRIGHT (c) 1989 by Claus Gittinger
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              All Rights Reserved
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 This software is furnished under a license and may be used
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 only in accordance with the terms of that license and with the
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 inclusion of the above copyright notice.   This software may not
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 be provided or otherwise made available to, or used by, any
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 other person.  No title to or ownership of the software is
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 hereby transferred.
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!
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version
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$Header: /cvs/stx/stx/libbasic/Time.st,v 1.9 1994-06-02 16:22:29 claus Exp $
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documentation
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"
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    Instances of time represent a particular time-of-day.
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! !
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!Time class methodsFor:'instance creation'!
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now
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    "return an instance of Time representing this moment"
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    ^ self basicNew setSecondsLow:(OperatingSystem getTimeLow)
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                              and:(OperatingSystem getTimeHi)
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!
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fromOSTime:osTime
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    "return a time, representing the time given by the operatingSystem time"
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    ^ self basicNew setSecondsLow:(osTime at:1) and:(osTime at:2)
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! !
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!Time class methodsFor:'ST-80 compatibility'!
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fromSeconds: seconds
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    "return a Time that is constructed from seconds since midnight."
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   ^ (self new setSeconds:seconds) subtractTime: "60*60" 3600
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    "midnight starts at 1:00:00 in ST/X for some strange reason"
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totalSeconds
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    ^ self secondClock
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! !
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!Time methodsFor:'ST-80 compatibility'!
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asSeconds
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        "Answer the number of seconds elapsed since midnight"
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        ^ ( 3600 * (self hourInDay)   )
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          + ( 60 * (self minuteInDay) )
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          +        (self secondInDay)
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!
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hours
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        "Answer the number of hours"
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        ^self hourInDay
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minutes
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        "Answer the number of minutes"
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        ^self minuteInDay
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!
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seconds
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        "Answer the number of seconds"
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        ^self secondInDay
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! !
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!Time methodsFor:'comparing'!
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> aTime
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    (aTime isMemberOf:Time) ifTrue:[
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        (secondsHi > aTime secondsHi) ifTrue:[^ true].
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        (secondsHi < aTime secondsHi) ifTrue:[^ false].
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        (secondsLow > aTime secondsLow) ifTrue:[^ true].
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        ^ false
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    ].
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    ^ self getSeconds > aTime getSeconds
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!
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< aTime
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    (aTime isMemberOf:Time) ifTrue:[
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        (secondsHi < aTime secondsHi) ifTrue:[^ true].
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        (secondsHi > aTime secondsHi) ifTrue:[^ false].
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        (secondsLow < aTime secondsLow) ifTrue:[^ true].
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        ^ false
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    ].
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    ^ self getSeconds < aTime getSeconds
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!
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= aTime
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    (aTime isMemberOf:Time) ifTrue:[
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        ^ ((secondsLow == aTime secondsLow) and:[secondsHi == aTime secondsHi])
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    ].
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    ^ self getSeconds = aTime getSeconds
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! !
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!Time methodsFor:'printing'!
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printOn:aStream
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    aStream nextPutAll:self printString
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!
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printString
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    |aString|
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    OperatingSystem computeTimePartsOf:secondsLow and:secondsHi for:[
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        :hours :minutes :secs |
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        aString := hours printString , ':' .
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        (minutes < 10) ifTrue:[aString := aString , '0'].
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        aString := aString , minutes printString.
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        aString := aString , ':'.
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        (secs < 10) ifTrue:[aString := aString , '0'].
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        aString := aString , secs printString
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    ].
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    ^ aString
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! !