--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tzservices/tzserver/Include/vtzrules.h	Tue Feb 02 10:12:00 2010 +0200
@@ -0,0 +1,191 @@
+// Copyright (c) 2005-2009 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:
+//
+
+#ifndef __VTZRULES_H__
+#define __VTZRULES_H__
+
+#include <e32base.h>
+#include <s32strm.h>
+#include <tzdefines.h>
+#include <tz.h>
+
+class CVTzActualisedRules;
+class TVTzActualisedRule; 
+
+const TInt KVTzRulesGranularity = 4;
+
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+ *	Time zone rules
+ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+
+/**
+Encapsulates one time zone rule.
+
+@publishedAll
+@released
+*/
+class TTzRule
+	{
+public:
+	IMPORT_C TTzRule(TInt16 aFromYear, TInt16 aToYear, TInt16 aOldOffset, TInt16 aNewOffset, TMonth aMonth, TTzRuleDay aDayRule, 
+				TUint8 aDayOfMonth, TUint8 aDayOfWeek, TTzTimeReference aTimeReference, TUint16 aTimeOfChange);
+	IMPORT_C TTzRule();
+	IMPORT_C TTzRule(const TTzRule& aRule);
+	IMPORT_C TTzRule(TTimeWithReference aFromYear, TTimeWithReference aToYear, TInt16 aOldOffset, TInt16 aNewOffset, TMonth aMonth, TTzRuleDay aDayRule, 
+				TUint8 aDayOfMonth, TUint8 aDayOfWeek, TTzTimeReference aTimeReference, TUint16 aTimeOfChange);
+
+	
+	void ExternalizeL(RWriteStream& aStream) const;
+	void InternalizeL(RReadStream& aStream);		
+	TBool RuleApplies(const TTime& aStart, const TTime& aEnd) const;		
+		
+	IMPORT_C TVTzActualisedRule Actualise(TInt aYear) const;    // deprecated, replace by the L version
+	IMPORT_C TVTzActualisedRule ActualiseL(TInt aYear) const;   
+	
+public:
+	TTimeWithReference iFrom;		// first date the rule applies
+	TTimeWithReference iTo;			// last date the rule applies
+	TInt16		iOldLocalTimeOffset; // local time offset (in minutes) BEFORE the change (local time = UTC + DST)
+	TInt16		iNewLocalTimeOffset; // local time offset (in minutes) AFTER the change
+	TMonth		iMonth;
+	TTzRuleDay	iDayRule;		// format in which the rule is expressed
+	TUint8		iDayOfMonth;
+	TUint8		iDayOfWeek;
+	TTzTimeReference iTimeReference;
+	TUint16		iTimeOfChange;	// number of minutes since midnight
+	TUint32		iReserved;
+	};
+	
+
+
+/**
+Encapsulates a collection of time zone rules, and includes the period covered by the rules
+and the standard time offset at the start of that period.
+
+@publishedAll
+@released
+*/
+class CTzRules : public CBase
+	{
+public:
+	IMPORT_C static CTzRules* NewL();
+	IMPORT_C static CTzRules* NewL(TInt aStartYear, TInt aEndYear);
+	IMPORT_C static CTzRules* NewL(RReadStream& aStream);
+	IMPORT_C ~CTzRules();
+	IMPORT_C TBool RulesApply(const TTime& aTime) const;
+	IMPORT_C void AddRuleL(TTzRule aRule);
+	IMPORT_C void RemoveRule(TInt aIndex);
+	IMPORT_C TTzRule& operator[](TInt aIndex);
+	IMPORT_C TInt Count() const;
+	IMPORT_C TInt StartYear() const;
+	IMPORT_C TInt EndYear() const;
+	IMPORT_C void SetStartYear(TInt aYear);
+	IMPORT_C void SetEndYear(TInt aYear);
+	IMPORT_C void ExternalizeL(RWriteStream& aStream) const;
+	IMPORT_C void InternalizeL(RReadStream& aStream);
+	IMPORT_C TInt InitialStdTimeOffset() const;
+	IMPORT_C void SetInitialStdTimeOffset(TInt aOffset);
+	IMPORT_C void ConvertToUtcL(TTime& aLocalTime) const;
+	IMPORT_C void ConvertToLocalL(TTime& aUtcTime) const;
+	IMPORT_C CTzRules* CloneL() const;
+	IMPORT_C TBool IsEqualTo(const CTzRules& aRules) const;
+	
+	IMPORT_C void GetActualisedRulesL(CVTzActualisedRules& aActRules) const;
+	IMPORT_C TInt ConvertTime(CVTzActualisedRules& aRules, TTime& aTime, TTzTimeReference aTimerRef) const;
+	
+	IMPORT_C TInt GetOffsetL(const TTime& aTime, TTzTimeReference aTimeRef) const;
+	IMPORT_C TInt SizeOfObject() const;
+	IMPORT_C void CopyL(const CTzRules& aTzRule);
+		
+private:
+	CTzRules();
+	CTzRules(TInt aStartYear, TInt aEndYear);
+	void AddActualisedRulesL(CVTzActualisedRules& aActRules, TInt aYear) const;
+	TInt CompareTimesWithRef(TTime aTimeA, TTzTimeReference aTimeARef,
+						     TTime aTimeB, TTzTimeReference aTimeBRef, TInt aStdOffset, TInt aWallOffset,
+						     TTimeIntervalMinutes* aMinutesDifference) const;
+
+private:
+	TInt16 iStartYear;
+	TInt16 iEndYear;
+	RArray<TTzRule> iRules;
+	TInt iInitialStdTimeOffset;
+	
+	mutable CVTzActualisedRules* iActualisedRulesCache;
+	};
+
+
+
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+ *	Actualised time zone rules
+ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+
+/**
+Encapsulates a local time change.
+
+@publishedAll
+@released
+*/
+class TVTzActualisedRule
+	{
+public:	
+	IMPORT_C TVTzActualisedRule(TTime aTimeOfChange, TInt aNewOffset, TTzTimeReference aTimeReference);
+	IMPORT_C TVTzActualisedRule();
+		
+	IMPORT_C void operator=(TVTzActualisedRule aRule);
+	static TInt Order(const TVTzActualisedRule& aLeft, const TVTzActualisedRule& aRight);	
+	
+public:
+	TTime iTimeOfChange;
+	TInt32  iNewOffset;
+	TTzTimeReference iTimeReference;
+	};
+	
+	
+/**
+Encapsulates a collection of the local time changes occurring during a range of years.
+
+@publishedAll
+@released
+*/
+NONSHARABLE_CLASS(CVTzActualisedRules) : public CBase
+	{
+public:
+	IMPORT_C static CVTzActualisedRules* NewL(TInt aStartYear, TInt aEndYear);
+	IMPORT_C ~CVTzActualisedRules();
+	IMPORT_C void AddRuleL(const TVTzActualisedRule& aRule);
+	IMPORT_C TInt Count() const;
+	IMPORT_C TVTzActualisedRule& operator[](TInt aIndex) const;
+
+	IMPORT_C TInt StartYear() const;
+	IMPORT_C TInt EndYear() const;
+	
+	IMPORT_C TBool IsDaylightSavingOn(TTime& aTime) const;
+	IMPORT_C TInt GetOffsetFromRuleL(const TTime& aTime, TTzTimeReference aTimeRef) const;
+	
+private:
+	CVTzActualisedRules(TInt aStartYear, TInt aEndYear);
+	CVTzActualisedRules();
+	TInt CompareTimesWithRef(TTime aRolloverTime, TTzTimeReference aTimeRefRollover, 
+							 TTime aUserTime, TTzTimeReference aTimeRefUser,
+							 TInt aOldWallOffset, TTimeIntervalMinutes& aDiffMinutes) const;
+	
+private:
+	TInt32 iStartYear;		// years covered by 
+	TInt32 iEndYear;		// the actualised rules
+	RArray<TVTzActualisedRule> iRules;	
+	};
+
+#endif