--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/calendarui/regionalplugins/calenregionalutil/src/calensolarterms.cpp	Tue Feb 02 10:12:19 2010 +0200
@@ -0,0 +1,209 @@
+/*
+* Copyright (c) 2006 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description:   Provides Solar Term dates for Lunar Calendar. Reads and caches
+*                binary data file that lists solar term dates. 
+*
+*/
+
+
+
+//debug
+#include "calendarui_debug.h"
+
+#include "calensolarterms.h"
+
+#include "calenlunarpaths.h"
+
+#include <f32file.h>
+#include <s32file.h>
+
+
+// CONSTANTS
+_LIT(KSolarTermsFile, "SolarItems");
+// search path for solar item file
+//Uncomment for emulator
+_LIT( KSolarTermsPath, "//private//10005901//" );  
+
+//_LIT( KSolarTermsPath, "//Data//calenlunarchinese//" );
+const TInt KFirstSolarTermYear(1900);
+const TInt KLastSolarTermYear(2100);
+
+
+// ======== MEMBER FUNCTIONS ========
+
+
+// ---------------------------------------------------------------------------
+// 
+// ---------------------------------------------------------------------------
+//
+CCalenSolarTerms* CCalenSolarTerms::NewL(RFs& aFs)
+    {
+    TRACE_ENTRY_POINT;
+    
+    CCalenSolarTerms* self = new (ELeave) CCalenSolarTerms(aFs);
+    CleanupStack::PushL( self );
+    self->ConstructL();
+    CleanupStack::Pop( self );
+    
+    TRACE_EXIT_POINT;
+    return self;
+    }
+
+
+// ---------------------------------------------------------------------------
+//
+// ---------------------------------------------------------------------------
+//
+CCalenSolarTerms::~CCalenSolarTerms()
+    {
+    TRACE_ENTRY_POINT;
+    TRACE_EXIT_POINT;
+    }
+
+
+// ---------------------------------------------------------------------------
+// 
+// ---------------------------------------------------------------------------
+//
+TInt CCalenSolarTerms::CheckSolarTermDateL( const TDateTime& aDate )
+    {
+    TRACE_ENTRY_POINT;
+    
+    ReadSolarTermsL( aDate );
+    if ( HasSolarTermDataAvailable( aDate ) )
+        {
+        // Solar festival data is available for this date 
+        for (TInt i(0); i < KSolarTermCount; i++)
+            {
+            TDateTime date = iSolarTermDates[i];
+            if (aDate.Month() == date.Month() && aDate.Day() == date.Day())
+                {
+                // First item in iSolarTermNames is LiChun ("Spring begins")
+                // occuring around 4.2 in western year. 
+                // It is first solar term in Chinese Lunar year, but it's 
+                // third term in western year.
+                // 
+                // iSolarTermDates list terms from beginning of western year,
+                // that's why we subtract 2 and take modulo 24 here, to convert
+                // order from 
+                // Xiao Han (~ 6.1.), Da Han (~22.1), Li Chun (~4.2)...
+                // to 
+                // Li Chun (~4.2.), ..., ..., Da Han (~22.1)
+                i += KSolarTermCount - 2;
+                TInt foundIndex = i % KSolarTermCount;
+                
+                TRACE_EXIT_POINT;
+                return foundIndex;
+                }
+            }
+        TRACE_EXIT_POINT;
+        return KErrNotFound;
+        }
+    else
+        {
+        // Solar festival data is NOT available for this date 
+        TRACE_EXIT_POINT;
+        return KErrNotSupported;
+        }
+    }
+
+
+
+// ---------------------------------------------------------------------------
+// ?description_if_needed
+// ---------------------------------------------------------------------------
+//
+CCalenSolarTerms::CCalenSolarTerms(RFs& aFs) : iFs( aFs )
+    {
+    TRACE_ENTRY_POINT;
+    TRACE_EXIT_POINT;
+    }
+
+
+// ---------------------------------------------------------------------------
+// ?description_if_needed
+// ---------------------------------------------------------------------------
+//
+void CCalenSolarTerms::ConstructL()
+    {
+    TRACE_ENTRY_POINT;
+    TRACE_EXIT_POINT;
+    }
+
+
+// ---------------------------------------------------------------------------
+// ?description_if_needed
+// ---------------------------------------------------------------------------
+//
+TBool CCalenSolarTerms::HasSolarTermDataAvailable(const TDateTime& aDate) const
+    {
+    TRACE_ENTRY_POINT;
+    
+    // Note: day parameter for TDateTime starts from 0, not from 1
+    const TDateTime KMinAvailable( KFirstSolarTermYear, EJanuary, 0, 0, 0, 0, 0 );
+    const TDateTime KMaxAvailable( KLastSolarTermYear, EDecember, 31 - 1, 23, 59, 59, 0 );
+    
+    TRACE_EXIT_POINT;
+    return TTime(KMinAvailable) <= TTime(aDate) &&
+           TTime(aDate) <= TTime(KMaxAvailable);
+    }
+
+
+// ---------------------------------------------------------
+// Reads and caches 24 solar term dates for one year
+// from "SolarItems" file
+// ---------------------------------------------------------
+//
+void CCalenSolarTerms::ReadSolarTermsL(TDateTime aDate)
+    {
+    TRACE_ENTRY_POINT;
+    
+    // Caches one year of solar items
+    if ( ! HasSolarTermDataAvailable( aDate ) )
+        {
+        return;
+        }
+
+    TInt year = aDate.Year();
+
+    if (iCachedYear != year)
+        {
+        RFile file;
+        RFs& fs = iFs;
+        TFindFile ffile(fs);
+        User::LeaveIfError(ffile.FindByDir(KSolarTermsFile, KSolarTermsPath));
+        User::LeaveIfError(file.Open(fs,
+                                     ffile.File(), EFileRead));
+        CleanupClosePushL(file);
+
+        TInt seekPos = 
+            (year - KFirstSolarTermYear) * sizeof(TUint8) * KSolarTermCount;
+
+        RFileReadStream readStream( file, seekPos );
+        readStream.PushL();
+
+         for (TInt i(0); i < KSolarTermCount; i++)
+             {
+             TMonth month = static_cast<TMonth>( EJanuary + (i / 2) );
+             TInt day = readStream.ReadUint8L();
+             TDateTime dt(year, month, day-1, 0, 0, 0, 0);
+             iSolarTermDates[i] = dt;
+             }
+
+        CleanupStack::PopAndDestroy(2); // readStream, file
+        iCachedYear = year;
+        }
+    
+    TRACE_EXIT_POINT;
+    }