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(Unicode C) JSON Date ParsingDemonstrates how to parse date/time strings from JSON. Note: This example uses the DtOf and DateOf methods introduced in Chilkat v9.5.0.73
#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); } |
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