Time Formats
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Hello,
is there are way to change the Time format to Military time format? I have been investigating this and have not found a solution. It should be possible but I have not seen the appropriate behaviors in the image that would be used to make such a change. Any input would be appreciated. Thanks, PAX |
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Pax wrote:
> is there are way to change the Time format to Military time format? I > have been investigating this and have not found a solution. In what context, displaying times, inputting times or both. The Dolphin image itself doesn't make a lot of use of Times so I would guess you are asking about a deployed application. In that case it would be relatively easy to write a simple input/output converter to get exactly the format you require. And what is "Military time format". The cynic in me immediately thought of something like "the big hand is on the twelve and the little hand is on the six" - but that's probably not right is it <vbg> -- Ian Use the Reply-To address to contact me. Mail sent to the From address is ignored. |
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Ian,
in my runtime application, objects that are created will be tagged with a Date and Time. The Time instance is of concern. Military format makes use of a 24 hour clock. For example, an instance of Time after 12:59pm will move to 13:00... This will continue until 23:59 where the next instance of time goes back to 01:00... The military establishment refers to these time values as "Thirteen Hundred"... "Fourteen Hundred" or "O Three Hundred" etc... They don't like to think like normal people... (grins). I have been playing with a conversion method for class Time>>asMilitaryTime. This would convert the time value to a military time format for display purposes. If possible, I would like it to be a valid instance of Time i.e, MilitaryTime instance. I may have to create a subclass to accomplish this. At this time (no pun intended) I am browsing MSDN to see what information MS has on the subject. |
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It appears this will be easier than anticipated... Locale default
timeFormats yields a collection of the following: an OrderedCollection('h:mm:ss tt' 'hh:mm:ss tt' 'H:mm:ss' 'HH:mm:ss'). The last item 'HH:mm:ss' is the 24 hour or Military time format. Class Time>>printOn: aStream format: aString would be used to pass in the format which will render the Time instance in the supplied format. If no format is provided, the Time instance will be rendered using the currently configured default format of the host OS. Thanks, PAX |
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Here is a copy of the code I implemented to display Time instances in
24 hour (Military) format for anyone that is interested in such a beasty... Time>>asMilitaryTime "Return a string representation of the receiver in 24 hour format" | aFormat aStream | aFormat := 'HH:mm:ss'. aStream := String writeStream. self printOn: aStream format: aFormat . ^aStream contents |
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Pax escribió:
> Here is a copy of the code I implemented to display Time instances in > 24 hour (Military) format for anyone that is interested in such a > beasty... > > Time>>asMilitaryTime > > "Return a string representation of the receiver in 24 hour format" > | aFormat aStream | > aFormat := 'HH:mm:ss'. > aStream := String writeStream. > self printOn: aStream format: aFormat . > ^aStream contents > Perhaps Time>>militaryDisplay would be a better name, considering that you're not converting aTime to aMilitaryTime, and are returning a string. Just a bit of uniformity. Regards, -- Esteban. |
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In reply to this post by pax
Pax,
do you "just" want to output 24h time format or do you have to take care of local to Z time conversion as well? AFAIK military are allways expressed as Z-Time which is in fact the same as UTC. So you should know the timezone each Time instance is in or allways use normalized (accodring to UTC/Z) Times. I attached two apckages which implement RFC3399 Times. This migh give you the methods to convert from and to UTC (for RFC3339) and might as well contain some hints how to output custom time formats. Regards, Udo Pax wrote: > Here is a copy of the code I implemented to display Time instances in > 24 hour (Military) format for anyone that is interested in such a > beasty... > > Time>>asMilitaryTime > > "Return a string representation of the receiver in 24 hour format" > | aFormat aStream | > aFormat := 'HH:mm:ss'. > aStream := String writeStream. > self printOn: aStream format: aFormat . > ^aStream contents > | package | package := Package name: 'US RFC3339'. package paxVersion: 0; basicComment: ''. package methodNames add: #Date -> #rfc3339String; add: #Locale -> #bias; add: #Time -> #asUTC; add: #Time -> #rfc3339String; add: #TimeStamp -> #rfc3339String; add: 'Date class' -> #fromRfc3339String:; add: 'Time class' -> #fromHours:minutes:seconds:milliseconds:; add: 'Time class' -> #fromHours:minutes:seconds:millisecondsFraction:; add: 'Time class' -> #fromRfc3339String:; add: 'Time class' -> #fromUtcHours:minutes:seconds:milliseconds:; add: 'Time class' -> #fromUtcHours:minutes:seconds:millisecondsFraction:; add: 'Time class' -> #fromUtcTime:; add: 'TimeStamp class' -> #fromRfc3339String:; yourself. package binaryGlobalNames: (Set new yourself). package globalAliases: (Set new yourself). package allResourceNames: (Set new yourself). package setPrerequisites: (IdentitySet new add: '..\Object Arts\Dolphin\Base\Dolphin'; yourself). package! "Class Definitions"! "Global Aliases"! "Loose Methods"! !Date methodsFor! rfc3339String | stream | stream := ReadWriteStream on: String new. self printOn: stream format: 'yyyy-MM-dd'. ^stream contents! ! !Date categoriesFor: #rfc3339String!public! ! !Date class methodsFor! fromRfc3339String: aString ^self fromString: aString format: 'YYYY-MM-DD'! ! !Date class categoriesFor: #fromRfc3339String:!public! ! !Locale methodsFor! bias ^(self timeZoneInformation at: 2) bias! ! !Locale categoriesFor: #bias!public! ! !Time methodsFor! asUTC ^self addTime: (Time fromSeconds: (Locale userDefault bias) * 60)! rfc3339String | stream bias | stream := ReadWriteStream on: String new. self printOn: stream format: 'HH:mm'. bias := Locale userDefault bias. bias isNull ifTrue: [stream nextPut: $Z]. bias positive ifTrue: [stream nextPut: $+]. bias negative ifTrue: [stream nextPut: $-]. (Time fromSeconds: bias abs * 60) printOn: stream format: 'HH.mm'. ^stream contents! ! !Time categoriesFor: #asUTC!public! ! !Time categoriesFor: #rfc3339String!public! ! !Time class methodsFor! fromHours: hours minutes: minutes seconds: seconds milliseconds: milliseconds ^Time fromMilliseconds: (((hours * 60 + minutes) * 60 + seconds) * 1000 + milliseconds) asInteger! fromHours: hours minutes: minutes seconds: seconds millisecondsFraction: millisecondsFraction ^self fromHours: hours minutes: minutes seconds: seconds milliseconds: (millisecondsFraction notNull ifTrue: [millisecondsFraction / (10 raisedTo: millisecondsFraction log ceiling)] ifFalse: [0]) * 1000! fromRfc3339String: aString | time offset | (aString includes: $-) ifTrue: [time := aString copyFrom: 1 to: (aString indexOf: $-) - 1. offset := aString copyFrom: (aString indexOf: $-) + 1. time := Time fromUtcTime: (Time fromString: time). time := time addTime: (Time fromString: offset). ^time]. (aString includes: $+) ifTrue: [time := aString copyFrom: 1 to: (aString indexOf: $+) - 1. offset := aString copyFrom: (aString indexOf: $+) + 1. time := Time fromUtcTime: (Time fromString: time). time := time subtractTime: (Time fromString: offset). ^time]. time := aString copyFrom: 1 to: aString size - 1. offset := '00:00'. ^Time fromUtcTime: (Time fromString: time)! fromUtcHours: hours minutes: minutes seconds: seconds milliseconds: milliseconds ^Time fromUtcTime: (Time fromMilliseconds: (((hours * 60 + minutes) * 60 + seconds) * 1000 + milliseconds )asInteger)! fromUtcHours: hours minutes: minutes seconds: seconds millisecondsFraction: millisecondsFraction ^self fromUtcHours: hours minutes: minutes seconds: seconds milliseconds: (millisecondsFraction notNull ifTrue: [millisecondsFraction / (10 raisedTo: millisecondsFraction log ceiling)] ifFalse: [0]) * 1000! fromUtcTime: aTime ^aTime subtractTime: (Time fromSeconds: Locale userDefault bias * 60)! ! !Time class categoriesFor: #fromHours:minutes:seconds:milliseconds:!public! ! !Time class categoriesFor: #fromHours:minutes:seconds:millisecondsFraction:!public! ! !Time class categoriesFor: #fromRfc3339String:!public! ! !Time class categoriesFor: #fromUtcHours:minutes:seconds:milliseconds:!public! ! !Time class categoriesFor: #fromUtcHours:minutes:seconds:millisecondsFraction:!public! ! !Time class categoriesFor: #fromUtcTime:!public! ! !TimeStamp methodsFor! rfc3339String ^self date rfc3339String , 'T' , self time rfc3339String! ! !TimeStamp categoriesFor: #rfc3339String!public! ! !TimeStamp class methodsFor! fromRfc3339String: aString |tokens| tokens := aString subStrings: 'T'. ^TimeStamp date: (Date fromRfc3339String: (tokens at: 1)) time: (Time fromRfc3339String: (tokens at: 2))! ! !TimeStamp class categoriesFor: #fromRfc3339String:!public! ! "End of package definition"! "Source Globals"! "Classes"! "Binary Globals"! "Resources"! | package | package := Package name: 'US RFC3339 Tests'. package paxVersion: 0; basicComment: ''. package classNames add: #MillisecondsFractionTest; add: #RFC3339Test; yourself. package binaryGlobalNames: (Set new yourself). package globalAliases: (Set new yourself). package allResourceNames: (Set new yourself). package setPrerequisites: (IdentitySet new add: '..\Object Arts\Dolphin\Base\Dolphin'; add: '..\Camp Smalltalk\SUnit\SUnit'; add: 'US RFC3339'; yourself). package setManualPrerequisites: #( 'US RFC3339'). package! "Class Definitions"! TestCase subclass: #MillisecondsFractionTest instanceVariableNames: '' classVariableNames: '' poolDictionaries: '' classInstanceVariableNames: ''! TestCase subclass: #RFC3339Test instanceVariableNames: '' classVariableNames: '' poolDictionaries: '' classInstanceVariableNames: ''! "Global Aliases"! "Loose Methods"! "End of package definition"! "Source Globals"! "Classes"! MillisecondsFractionTest guid: (GUID fromString: '{8D6C42B2-9AB8-4DE5-9CA2-31E160FA9573}')! MillisecondsFractionTest comment: ''! !MillisecondsFractionTest categoriesForClass!Unclassified! ! !MillisecondsFractionTest methodsFor! testMillisecondsFraction self assert: ((Time fromHours: 0 minutes: 0 seconds: 0 milliseconds: 500) addTime: (Time fromHours: 0 minutes: 0 seconds: 0 milliseconds: 500)) = (Time fromHours: 0 minutes: 0 seconds: 1 milliseconds: 0). self assert: ((Time fromHours: 0 minutes: 0 seconds: 0 millisecondsFraction: 5) addTime: (Time fromHours: 0 minutes: 0 seconds: 0 millisecondsFraction: 5)) = (Time fromHours: 0 minutes: 0 seconds: 1 milliseconds: 0)! ! !MillisecondsFractionTest categoriesFor: #testMillisecondsFraction!public! ! RFC3339Test guid: (GUID fromString: '{43591C45-0787-4B62-A2ED-984751060562}')! RFC3339Test comment: ''! !RFC3339Test categoriesForClass!Unclassified! ! !RFC3339Test methodsFor! assertHour: hour minute: minute second: second millisecondFraction: millisecondFraction equalsRfc3339String: aString self assert: (Time fromUtcHours: hour minutes: minute seconds: second millisecondsFraction: millisecondFraction) rfc3339String = (Time fromRfc3339String: aString) rfc3339String! assertHour: hour minute: minute second: second millisecondFraction: millisecondFraction offsetAdd: anOffset equalsRfc3339String: aString self assert: ((Time fromUtcHours: hour minutes: minute seconds: second millisecondsFraction: millisecondFraction) subtractTime: (Time fromString: anOffset)) rfc3339String = (Time fromRfc3339String: aString) rfc3339String! assertHour: hour minute: minute second: second millisecondFraction: millisecondFraction offsetSubtract: anOffset equalsRfc3339String: aString self assert: ((Time fromUtcHours: hour minutes: minute seconds: second millisecondsFraction: millisecondFraction) addTime: (Time fromString: anOffset)) rfc3339String = (Time fromRfc3339String: aString) rfc3339String! assertRfc3339String: aString equalsHour: hour minute: minute second: second millisecondFraction: millisecondFraction self assert: (Time fromRfc3339String: aString) = (Time fromUtcHours: hour minutes: minute seconds: second millisecondsFraction: millisecondFraction)! assertRfc3339String: aString equalsHour: hour minute: minute second: second millisecondFraction: millisecondFraction offsetAdd: offset self assert: (Time fromRfc3339String: aString) = ((Time fromUtcHours: hour minutes: minute seconds: second millisecondsFraction: millisecondFraction) subtractTime: (Time fromString: offset))! assertRfc3339String: aString equalsHour: hour minute: minute second: second millisecondFraction: millisecondFraction offsetSubtract: offset self assert: (Time fromRfc3339String: aString) = ((Time fromUtcHours: hour minutes: minute seconds: second millisecondsFraction: millisecondFraction) addTime: (Time fromString: offset))! assertRfc3339String: aString equalsYear: year month: month day: day self assert: (Date fromRfc3339String: aString) = (Date newDay: day monthIndex: month year: year)! assertRfc3339String: aString equalsYear: year month: month day: day hour: hour minute: minute second: second millisecondFraction: millisecondFraction self assert: (TimeStamp fromRfc3339String: aString) = (TimeStamp date: (Date newDay: day monthIndex: month year: year) time: ((Time fromUtcHours: hour minutes: minute seconds: second millisecondsFraction: millisecondFraction) ))! assertRfc3339String: aString equalsYear: year month: month day: day hour: hour minute: minute second: second millisecondFraction: millisecondFraction offsetAdd: offset self assert: (TimeStamp fromRfc3339String: aString) = (TimeStamp date: (Date newDay: day monthIndex: month year: year) time: ((Time fromUtcHours: hour minutes: minute seconds: second millisecondsFraction: millisecondFraction) subtractTime: (Time fromString: offset)))! assertRfc3339String: aString equalsYear: year month: month day: day hour: hour minute: minute second: second millisecondFraction: millisecondFraction offsetSubtract: offset self assert: (TimeStamp fromRfc3339String: aString) = (TimeStamp date: (Date newDay: day monthIndex: month year: year) time: ((Time fromUtcHours: hour minutes: minute seconds: second millisecondsFraction: millisecondFraction) addTime: (Time fromString: offset)))! assertYear: year month: month day: day equalsRfc3339String: aString self assert: (Date newDay: day monthIndex: month year: year) rfc3339String = aString! assertYear: year month: month day: day hour: hour minute: minute second: second millisecondFraction: millisecondFraction equalsRfc3339String: string self assert: (TimeStamp date: (Date newDay: day monthIndex: month year: year) time: ((Time fromUtcHours: hour minutes: minute seconds: second millisecondsFraction: millisecondFraction) )) rfc3339String = (TimeStamp fromRfc3339String: string) rfc3339String! assertYear: year month: month day: day hour: hour minute: minute second: second millisecondFraction: millisecondFraction offsetAdd: offset equalsRfc3339String: string self assert: (TimeStamp date: (Date newDay: day monthIndex: month year: year) time: ((Time fromUtcHours: hour minutes: minute seconds: second millisecondsFraction: millisecondFraction) subtractTime: (Time fromString: offset))) rfc3339String = (TimeStamp fromRfc3339String: string) rfc3339String! assertYear: year month: month day: day hour: hour minute: minute second: second millisecondFraction: millisecondFraction offsetSubtract: offset equalsRfc3339String: string self assert: (TimeStamp date: (Date newDay: day monthIndex: month year: year) time: ((Time fromUtcHours: hour minutes: minute seconds: second millisecondsFraction: millisecondFraction) addTime: (Time fromString: offset))) rfc3339String = (TimeStamp fromRfc3339String: string) rfc3339String! testFromRfc3339Date self assertRfc3339String: '1985-04-12' equalsYear: 1985 month: 4 day: 12; assertRfc3339String: '1996-12-19' equalsYear: 1996 month: 12 day: 19; assertRfc3339String: '1990-12-31' equalsYear: 1990 month: 12 day: 31; assertRfc3339String: '1937-01-01' equalsYear: 1937 month: 1 day: 1! testFromRfc3339Time self assertRfc3339String: '23:20:50.52Z' equalsHour: 23 minute: 20 second: 50 millisecondFraction: 52; assertRfc3339String: '16:39:57-08:00' equalsHour: 16 minute: 39 second: 57 millisecondFraction: 0 offsetSubtract: '08:00'; assertRfc3339String: '12:00:27.87+00:20' equalsHour: 12 minute: 0 second: 27 millisecondFraction: 87 offsetAdd: '00:20'! testFromRfc3339TimeStamp self assertRfc3339String: '1985-04-12T23:20:50.52Z' equalsYear: 1985 month: 4 day: 12 hour: 23 minute: 20 second: 50 millisecondFraction: 52; assertRfc3339String: '1996-12-19T16:39:57-08:00' equalsYear: 1996 month: 12 day: 19 hour: 16 minute: 39 second: 57 millisecondFraction: 0 offsetSubtract: '08:00'; assertRfc3339String: '1937-01-01T12:00:27.87+00:20' equalsYear: 1937 month: 1 day: 1 hour: 12 minute: 0 second: 27 millisecondFraction: 87 offsetAdd: '00:20'! testToRfc3339Date self assertYear: 1985 month: 4 day: 12 equalsRfc3339String: '1985-04-12'; assertYear: 1996 month: 12 day: 19 equalsRfc3339String: '1996-12-19'; assertYear: 1990 month: 12 day: 31 equalsRfc3339String: '1990-12-31'; assertYear: 1937 month: 1 day: 1 equalsRfc3339String: '1937-01-01'! testToRfc3339Time self assertHour: 23 minute: 20 second: 50 millisecondFraction: 52 equalsRfc3339String: '23:20:50.52Z'; assertHour: 16 minute: 39 second: 57 millisecondFraction: 0 offsetSubtract: '08:00' equalsRfc3339String: '16:39:57-08:00'; assertHour: 12 minute: 0 second: 27 millisecondFraction: 87 offsetAdd: '00:20' equalsRfc3339String: '12:00:27.87+00:20'! testToRfc3339TimeStamp self assertYear: 1985 month: 4 day: 12 hour: 23 minute: 20 second: 50 millisecondFraction: 52 equalsRfc3339String: '1985-04-12T23:20:50.52Z'; assertYear: 1996 month: 12 day: 19 hour: 16 minute: 39 second: 57 millisecondFraction: 0 offsetSubtract: '08:00' equalsRfc3339String: '1996-12-19T16:39:57-08:00'; assertYear: 1937 month: 1 day: 1 hour: 12 minute: 0 second: 27 millisecondFraction: 87 offsetAdd: '00:20' equalsRfc3339String: '1937-01-01T12:00:27.87+00:20'! ! !RFC3339Test categoriesFor: #assertHour:minute:second:millisecondFraction:equalsRfc3339String:!helpers!private! ! !RFC3339Test categoriesFor: #assertHour:minute:second:millisecondFraction:offsetAdd:equalsRfc3339String:!helpers!private! ! !RFC3339Test categoriesFor: #assertHour:minute:second:millisecondFraction:offsetSubtract:equalsRfc3339String:!helpers!private! ! !RFC3339Test categoriesFor: #assertRfc3339String:equalsHour:minute:second:millisecondFraction:!helpers!private! ! !RFC3339Test categoriesFor: #assertRfc3339String:equalsHour:minute:second:millisecondFraction:offsetAdd:!helpers!private! ! !RFC3339Test categoriesFor: #assertRfc3339String:equalsHour:minute:second:millisecondFraction:offsetSubtract:!helpers!private! ! !RFC3339Test categoriesFor: #assertRfc3339String:equalsYear:month:day:!helpers!private! ! !RFC3339Test categoriesFor: #assertRfc3339String:equalsYear:month:day:hour:minute:second:millisecondFraction:!helpers!private! ! !RFC3339Test categoriesFor: #assertRfc3339String:equalsYear:month:day:hour:minute:second:millisecondFraction:offsetAdd:!helpers!private! ! !RFC3339Test categoriesFor: #assertRfc3339String:equalsYear:month:day:hour:minute:second:millisecondFraction:offsetSubtract:!helpers!private! ! !RFC3339Test categoriesFor: #assertYear:month:day:equalsRfc3339String:!helpers!private! ! !RFC3339Test categoriesFor: #assertYear:month:day:hour:minute:second:millisecondFraction:equalsRfc3339String:!helpers!private! ! !RFC3339Test categoriesFor: #assertYear:month:day:hour:minute:second:millisecondFraction:offsetAdd:equalsRfc3339String:!helpers!private! ! !RFC3339Test categoriesFor: #assertYear:month:day:hour:minute:second:millisecondFraction:offsetSubtract:equalsRfc3339String:!helpers!private! ! !RFC3339Test categoriesFor: #testFromRfc3339Date!public!test! ! !RFC3339Test categoriesFor: #testFromRfc3339Time!public!test! ! !RFC3339Test categoriesFor: #testFromRfc3339TimeStamp!public!test! ! !RFC3339Test categoriesFor: #testToRfc3339Date!public!test! ! !RFC3339Test categoriesFor: #testToRfc3339Time!public!test! ! !RFC3339Test categoriesFor: #testToRfc3339TimeStamp!public!test! ! "Binary Globals"! "Resources"! |
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In reply to this post by pax
Pax wrote:
> Time>>asMilitaryTime > > "Return a string representation of the receiver in 24 hour format" > > aFormat aStream | > aFormat := 'HH:mm:ss'. > aStream := String writeStream. > self printOn: aStream format: aFormat . > ^aStream contents Or, in the spirit of Ian's remark: ============= militaryDisplayString | numbers positions minutes hours bigHand bigNumber bigNext bigPosition littleHand littleNumber littleNext littlePosition | numbers := #( 'twelve' 'one' 'two' 'three' 'four' 'five' 'six' 'seven' 'eight' 'nine' 'ten' 'eleven' 'twelve' ). positions := #( 'on the %1' 'just past the %1' 'between the %1 and the %2' 'between the %1 and the %2' 'just before the %2' ). minutes := self seconds / 60.0 + self minutes. hours := minutes / 60.0 + self hours. hours >= 12.0 ifTrue: [hours := hours - 12]. bigHand := hours. bigNumber := numbers at: bigHand truncated + 1. bigNext := numbers at: bigHand truncated + 2. bigPosition := positions at: (bigHand fractionPart * positions size) truncated + 1. littleHand := minutes / 5.0. littleNumber := numbers at: littleHand truncated + 1. littleNext := numbers at: littleHand truncated + 2. littlePosition := positions at: (littleHand fractionPart * positions size) truncated + 1. ^ (String writeStream) nextPutAll: 'The big hand is '; nextPutAll: (bigPosition formatWith: bigNumber with: bigNext); nextPutAll: ', and the little hand is '; nextPutAll: (littlePosition formatWith: littleNumber with: littleNext); contents. ============= ;-) -- chris |
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On Tue, 23 Aug 2005 14:51:36 +0100, Chris Uppal <[hidden email]> wrote:
> > Or, in the spirit of Ian's remark: > which is only part of real life requirements according to http://www.jumbojoke.com/000472.html :-D s. |
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In reply to this post by Udo Schneider
Udo,
I merely need to display the Time instance in 24 hour format. I also needed the TIME_ZONE_INFORMATION (subclass of Win32Struct) information which comes from Locale default timeZoneInformation. This is set at the OS level and is easily read by Dolphin. But, I will have a look at the package you uploaded. Esteban, your suggestion is well received given that there is no conversion of Time instance. Just displaying a different format. The Big Hand/Little Hand proposals are not of interest and have no merit for my project as a solution is in hand. Pax |
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Pax wrote:
> I merely need to display the Time instance in 24 hour format. I also > needed the TIME_ZONE_INFORMATION (subclass of Win32Struct) information > which comes from Locale default timeZoneInformation. This is set at the > OS level and is easily read by Dolphin. But, I will have a look at the > package you uploaded. The package I uploaded includes functionality to take care of the Time Zone (using the approach you mentioned above). For the 24h time it should be enough to strip time zone information from the RFC3339 String (see approrpiate methods in Time) ... this of course only works if Times are in UTC. CU, Udo |
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