examples/AppServices/calcon/CalconExample.cpp

/*
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Description:  This example demonstrates conversion of Chinese lunar calendar dates to Gregorian dates
              and vice versa.
*/


#include <e32std.h>
#include <e32base.h>
#include <e32cons.h>
#include <calendarconverter.h> 

// local definitions 
static CConsoleBase* console;
// Pointer to the CChineseCalendarConverter
static CChineseCalendarConverter*       gCalendarConverter;
// strings for display
_LIT(KMsgPressAnyKey,"\nPress any key to continue\n\n");
_LIT(KConsoleStars,"\n*************************\n");

static void PrintChineseDate(TChineseDate aDate);
static void PrintGregorianDate(TDateTime aDate);

// Converts a Gregorian date to a Chinese date
static TChineseDate& GregorianDatesToLunarDatesL(TDateTime aStartDT)
        {
        _LIT(KConsoleMessage,"This function demonstrates conversion of Gregorian to Chinese dates\n");
        console->Printf(KConsoleMessage);
                
        _LIT(KConsoleMessage1,"\nBefore conversion, the date in Gregorian format is: ");
        console->Printf(KConsoleMessage1);
        PrintGregorianDate(aStartDT);
        
        TInt err1;
        static TChineseDate chineseDate;
        // Convert the earliest date in the convertible range
        TRAP(err1,gCalendarConverter->DateTimeToChineseL(aStartDT,chineseDate));
        if (err1)
                {
                _LIT(KConsoleMessage2,"Conversion error");
                console->Printf(KConsoleMessage2);      
                }
        else
                {
                _LIT(KConsoleMessage3,"\nAfter conversion, the date in Chinese format is:\n");
                console->Printf(KConsoleMessage3);
                PrintChineseDate(chineseDate);
        }
        console->Printf(KConsoleStars);
        // Wait for user to press a key before destroying console
        console->Printf(KMsgPressAnyKey);
        console->Getch();
        return chineseDate;
        }
        
// Converts a Chinese date to a Gregorian date
static void LunarDatesToGregorianDatesL(TChineseDate aChineseDate)
        {
        _LIT(KConsoleMessage,"This function demonstrates conversion of Chinese to Gregorian dates\n");
        console->Printf(KConsoleMessage);
                
        TDateTime dateTime;

        _LIT(KConsoleMessage1,"\nBefore conversion, the date in Chinese format is:\n");
        console->Printf(KConsoleMessage1);
        PrintChineseDate(aChineseDate);

        TInt err;
        // Convert the last date in the convertible range
        TRAP(err,gCalendarConverter->ChineseToDateTimeL(aChineseDate, dateTime));
        if (err)
                {
                _LIT(KConsoleMessage2,"Conversion error");
                console->Printf(KConsoleMessage2);      
                }
        else
                {
                _LIT(KConsoleMessage3,"\nAfter conversion, the date is: ");
                console->Printf(KConsoleMessage3);

                PrintGregorianDate(dateTime);
        console->Printf(KConsoleStars);

                }
        }
        
// Prints Chinese date
static void PrintChineseDate(TChineseDate aDate)        
        {
        TBuf16<32> buffer;
        _LIT(KFormatTxt,"Cycle: %d \n");
        buffer.Format(KFormatTxt,aDate.iCycle);
        console->Printf(buffer);

        _LIT(KFormatTxt2,"Year: %d \n");
        buffer.Format(KFormatTxt2,aDate.iYear);
        console->Printf(buffer);
  
        _LIT(KFormatTxt3,"Month: %d \n");
        buffer.Format(KFormatTxt3,aDate.iMonth);
        console->Printf(buffer);
  
        _LIT(KFormatTxt4,"LeapMonth: %d \n");
        buffer.Format(KFormatTxt4,aDate.iLeapMonth);
        console->Printf(buffer);
  
        _LIT(KFormatTxt5,"Day: %d \n");
        buffer.Format(KFormatTxt5,aDate.iDay);
        console->Printf(buffer);
        }
        
// Prints Gregorian date
static void PrintGregorianDate(TDateTime aDate)
        {
        TBuf16<32> buffer;
        _LIT(KFormatTxt,"%d%S  %S %d\n");
        TDateSuffix iDateSuffix = TDateSuffix(aDate.Day());
        TMonthName iMonthName = TMonthName(aDate.Month());
        buffer.Format(KFormatTxt,aDate.Day()+1,&iDateSuffix,&iMonthName,aDate.Year());
    console->Printf(buffer);
        }
        
static void EgCalconL()
        {
        gCalendarConverter = CChineseCalendarConverter::NewL();
        CleanupStack::PushL(gCalendarConverter);
        
        TDateTime startDT;
        TDateTime finishDT;
        
        gCalendarConverter->DateRange(startDT, finishDT);
        
        TChineseDate chineseDate = GregorianDatesToLunarDatesL(startDT);
        LunarDatesToGregorianDatesL(chineseDate);
        
        CleanupStack::PopAndDestroy(gCalendarConverter); 
        }
        
static void DoExampleL()
    {
        // Create the console to print the messages to. 
        _LIT(KConsoleMessageDisplay, "Calcon Example");
        console = Console::NewL(KConsoleMessageDisplay,TSize(KConsFullScreen,KConsFullScreen));
        CleanupStack::PushL(console);
        console->Printf(KConsoleMessageDisplay);
        console->Printf(KConsoleStars);

        TRAPD(err,EgCalconL());
        if (err)
                {
                _LIT(KFailed,"\n\nExample failed: leave code=%d");
                console->Printf(KFailed, err);
                }
        // wait for user to press a key before destroying console
        console->Printf(KMsgPressAnyKey);
        console->Getch();
    CleanupStack::PopAndDestroy(console);
    }

// Standard entry point function
 TInt E32Main()
        {
        __UHEAP_MARK;
        // Active scheduler required as this is a console app
        CActiveScheduler* scheduler=new CActiveScheduler;
        // If active scheduler has been created, install it.
        if (scheduler)
                {
                CActiveScheduler::Install(scheduler); 
                // Cleanup stack needed
                CTrapCleanup* cleanup=CTrapCleanup::New();
                if (cleanup)
                        {
                        
                    TRAP_IGNORE(DoExampleL());
                        delete cleanup;
                        }
                delete scheduler;
                }
        __UHEAP_MARKEND;
        return KErrNone;
    }
  

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