(Unicode C) JSON Date Parsing

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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#include <C_CkJsonObjectW.h>
#include <C_CkDateTimeW.h>
#include <C_CkDtObjW.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkJsonObjectW json;
    HCkDateTimeW dateTime;
    HCkDtObjW dt;
    BOOL getAsLocal;



    json = CkJsonObjectW_Create();
    CkJsonObjectW_putEmitCompact(json,FALSE);

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

    wprintf(L"%s\n",CkJsonObjectW_emit(json));

    // 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.
    dateTime = CkDateTimeW_Create();
    dt = CkDtObjW_Create();
    getAsLocal = FALSE;

    // Load the date/time at test.timestamp into the dateTime object.
    success = CkJsonObjectW_DateOf(json,L"test.timestamp",dateTime);
    wprintf(L"%s\n",CkDateTimeW_getAsTimestamp(dateTime,getAsLocal));
    wprintf(L"%d\n",CkDateTimeW_GetAsUnixTime(dateTime,FALSE));
    wprintf(L"%s\n",CkDateTimeW_getAsRfc822(dateTime,getAsLocal));

    success = CkJsonObjectW_DateOf(json,L"test.rfc822",dateTime);
    wprintf(L"%s\n",CkDateTimeW_getAsTimestamp(dateTime,getAsLocal));

    CkJsonObjectW_putI(json,0);
    success = CkJsonObjectW_DateOf(json,L"test.dateStrings[i]",dateTime);
    wprintf(L"%s\n",CkDateTimeW_getAsTimestamp(dateTime,getAsLocal));

    CkJsonObjectW_putI(json,1);
    success = CkJsonObjectW_DateOf(json,L"test.dateStrings[i]",dateTime);
    wprintf(L"%s\n",CkDateTimeW_getAsTimestamp(dateTime,getAsLocal));

    success = CkJsonObjectW_DateOf(json,L"test.StartLoggingTime",dateTime);
    wprintf(L"%s\n",CkDateTimeW_getAsTimestamp(dateTime,getAsLocal));

    success = CkJsonObjectW_DateOf(json,L"test.Expiration",dateTime);
    wprintf(L"%s\n",CkDateTimeW_getAsTimestamp(dateTime,getAsLocal));

    success = CkJsonObjectW_DateOf(json,L"test.StartTime",dateTime);
    wprintf(L"%s\n",CkDateTimeW_getAsTimestamp(dateTime,getAsLocal));

    // 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:
    success = CkJsonObjectW_DtOf(json,L"test.timestamp",getAsLocal,dt);
    wprintf(L"month=%d, day=%d, year=%d, hour=%d, minute=%d\n",CkDtObjW_getMonth(dt),CkDtObjW_getDay(dt),CkDtObjW_getYear(dt),CkDtObjW_getHour(dt)
        ,CkDtObjW_getMinute(dt));

    success = CkJsonObjectW_DtOf(json,L"test.rfc822",getAsLocal,dt);
    wprintf(L"month=%d, day=%d, year=%d, hour=%d, minute=%d\n",CkDtObjW_getMonth(dt),CkDtObjW_getDay(dt),CkDtObjW_getYear(dt),CkDtObjW_getHour(dt)
        ,CkDtObjW_getMinute(dt));

    CkJsonObjectW_putI(json,0);
    success = CkJsonObjectW_DtOf(json,L"test.dateStrings[i]",getAsLocal,dt);
    wprintf(L"month=%d, day=%d, year=%d, hour=%d, minute=%d\n",CkDtObjW_getMonth(dt),CkDtObjW_getDay(dt),CkDtObjW_getYear(dt),CkDtObjW_getHour(dt)
        ,CkDtObjW_getMinute(dt));

    CkJsonObjectW_putI(json,1);
    success = CkJsonObjectW_DtOf(json,L"test.dateStrings[i]",getAsLocal,dt);
    wprintf(L"month=%d, day=%d, year=%d, hour=%d, minute=%d\n",CkDtObjW_getMonth(dt),CkDtObjW_getDay(dt),CkDtObjW_getYear(dt),CkDtObjW_getHour(dt)
        ,CkDtObjW_getMinute(dt));

    success = CkJsonObjectW_DtOf(json,L"test.StartLoggingTime",getAsLocal,dt);
    wprintf(L"month=%d, day=%d, year=%d, hour=%d, minute=%d\n",CkDtObjW_getMonth(dt),CkDtObjW_getDay(dt),CkDtObjW_getYear(dt),CkDtObjW_getHour(dt)
        ,CkDtObjW_getMinute(dt));

    success = CkJsonObjectW_DtOf(json,L"test.Expiration",getAsLocal,dt);
    wprintf(L"month=%d, day=%d, year=%d, hour=%d, minute=%d\n",CkDtObjW_getMonth(dt),CkDtObjW_getDay(dt),CkDtObjW_getYear(dt),CkDtObjW_getHour(dt)
        ,CkDtObjW_getMinute(dt));

    success = CkJsonObjectW_DtOf(json,L"test.StartTime",getAsLocal,dt);
    wprintf(L"month=%d, day=%d, year=%d, hour=%d, minute=%d\n",CkDtObjW_getMonth(dt),CkDtObjW_getDay(dt),CkDtObjW_getYear(dt),CkDtObjW_getHour(dt)
        ,CkDtObjW_getMinute(dt));

    // 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


    CkJsonObjectW_Dispose(json);
    CkDateTimeW_Dispose(dateTime);
    CkDtObjW_Dispose(dt);

    }