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Lianja

JSON Date Parsing

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Demonstrates how to parse date/time strings from JSON.

Note: This example uses the DtOf and DateOf methods introduced in Chilkat v9.5.0.73

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llSuccess = .F.

loJson = createobject("CkJsonObject")
loJson.EmitCompact = .F.

// First, let's create JSON containing some date/time strings.
loJson.UpdateString("test.timestamp","2018-01-30T20:35:00Z")
loJson.UpdateString("test.rfc822","Tue, 24 Apr 2018 08:47:03 -0500")
loJson.UpdateString("test.dateStrings[0]","2018-01-30T20:35:00Z")
loJson.UpdateString("test.dateStrings[1]","Tue, 24 Apr 2018 08:47:03 -0500")
loJson.UpdateNumber("test.StartLoggingTime","1446834998.695")
loJson.UpdateNumber("test.Expiration","1442877512.0")
loJson.UpdateInt("test.StartTime",1518867432)

? loJson.Emit()

// We've built the following JSON:

// {
//   "test": {
//     "timestamp": "2018-01-30T20:35:00Z",
//     "rfc822": "Tue, 24 Apr 2018 08:47:03 -0500",
//     "dateStrings": [
//       "2018-01-30T20:35:00Z",
//       "Tue, 24 Apr 2018 08:47:03 -0500"
//     ],
//     "StartLoggingTime": 1446834998.695,
//     "Expiration": 1442877512.0,
//     "StartTime": 1518867432
//   }
// }

// Use the DateOf and DtOf methods to load Chilkat date/time objects with the date/time values.
// The CkDateTime object is primarily for loading a date/time from numerous formats, and then getting
// the date/time in various formats.  Thus, it's primarly for date/time format conversion.
// The DtObj object holds a date/time where the individual components (day, month, year, hour, minutes, etc.) are 
// immediately accessible as integers.
loDateTime = createobject("CkDateTime")
loDt = createobject("CkDtObj")
llGetAsLocal = .F.

// Load the date/time at test.timestamp into the dateTime object.
llSuccess = loJson.DateOf("test.timestamp",loDateTime)
? loDateTime.GetAsTimestamp(llGetAsLocal)
? str(loDateTime.GetAsUnixTime(.F.))
? loDateTime.GetAsRfc822(llGetAsLocal)

llSuccess = loJson.DateOf("test.rfc822",loDateTime)
? loDateTime.GetAsTimestamp(llGetAsLocal)

loJson.I = 0
llSuccess = loJson.DateOf("test.dateStrings[i]",loDateTime)
? loDateTime.GetAsTimestamp(llGetAsLocal)

loJson.I = 1
llSuccess = loJson.DateOf("test.dateStrings[i]",loDateTime)
? loDateTime.GetAsTimestamp(llGetAsLocal)

llSuccess = loJson.DateOf("test.StartLoggingTime",loDateTime)
? loDateTime.GetAsTimestamp(llGetAsLocal)

llSuccess = loJson.DateOf("test.Expiration",loDateTime)
? loDateTime.GetAsTimestamp(llGetAsLocal)

llSuccess = loJson.DateOf("test.StartTime",loDateTime)
? loDateTime.GetAsTimestamp(llGetAsLocal)

// Output so far:

// 	2018-01-30T20:35:00Z
// 	1517344500
// 	Tue, 30 Jan 2018 20:35:00 GMT
// 	2018-04-24T13:47:03Z
// 	2018-01-30T20:35:00Z
// 	2018-04-24T13:47:03Z
// 	2015-11-07T00:36:38Z
// 	2015-09-22T04:18:32Z
// 	2018-02-17T17:37:12Z

// Now load the date/time strings into the dt object:
llSuccess = loJson.DtOf("test.timestamp",llGetAsLocal,loDt)
? "month=" + str(loDt.Month) + ", day=" + str(loDt.Day) + ", year=" + str(loDt.Year) + ", hour=" + str(loDt.Hour) + ", minute=" + str(loDt.Minute)

llSuccess = loJson.DtOf("test.rfc822",llGetAsLocal,loDt)
? "month=" + str(loDt.Month) + ", day=" + str(loDt.Day) + ", year=" + str(loDt.Year) + ", hour=" + str(loDt.Hour) + ", minute=" + str(loDt.Minute)

loJson.I = 0
llSuccess = loJson.DtOf("test.dateStrings[i]",llGetAsLocal,loDt)
? "month=" + str(loDt.Month) + ", day=" + str(loDt.Day) + ", year=" + str(loDt.Year) + ", hour=" + str(loDt.Hour) + ", minute=" + str(loDt.Minute)

loJson.I = 1
llSuccess = loJson.DtOf("test.dateStrings[i]",llGetAsLocal,loDt)
? "month=" + str(loDt.Month) + ", day=" + str(loDt.Day) + ", year=" + str(loDt.Year) + ", hour=" + str(loDt.Hour) + ", minute=" + str(loDt.Minute)

llSuccess = loJson.DtOf("test.StartLoggingTime",llGetAsLocal,loDt)
? "month=" + str(loDt.Month) + ", day=" + str(loDt.Day) + ", year=" + str(loDt.Year) + ", hour=" + str(loDt.Hour) + ", minute=" + str(loDt.Minute)

llSuccess = loJson.DtOf("test.Expiration",llGetAsLocal,loDt)
? "month=" + str(loDt.Month) + ", day=" + str(loDt.Day) + ", year=" + str(loDt.Year) + ", hour=" + str(loDt.Hour) + ", minute=" + str(loDt.Minute)

llSuccess = loJson.DtOf("test.StartTime",llGetAsLocal,loDt)
? "month=" + str(loDt.Month) + ", day=" + str(loDt.Day) + ", year=" + str(loDt.Year) + ", hour=" + str(loDt.Hour) + ", minute=" + str(loDt.Minute)

// Output:

// month=1, day=30, year=2018, hour=20, minute=35
// month=4, day=24, year=2018, hour=13, minute=47
// month=1, day=30, year=2018, hour=20, minute=35
// month=4, day=24, year=2018, hour=13, minute=47
// month=11, day=6, year=2015, hour=18, minute=36
// month=9, day=21, year=2015, hour=23, minute=18
// month=2, day=17, year=2018, hour=11, minute=37


release loJson
release loDateTime
release loDt