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/*
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* Copyright (c) 2007-2009 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of the License "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description:
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*
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*/
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#include "util.h"
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#include <centralrepository.h>
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_LIT(KDaylightSavingsMinFormat, "%F%Y0224:");
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_LIT(KDaylightSavingsMaxFormat, "%F%Y0924:");
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void Util::SetAppropriateTimezoneL()
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{
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TUid repUid = {0x1020e4d3};
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CRepository* rep = CRepository::NewLC(repUid);
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// Set the date format to European
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User::LeaveIfError(rep->StartTransaction(CRepository::EConcurrentReadWriteTransaction));
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User::LeaveIfError(rep->Set(101, EDateEuropean)); // 101 is the date format reg entry
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TUint32 keys(0);
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User::LeaveIfError(rep->CommitTransaction(keys));
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CleanupStack::PopAndDestroy(rep);
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TExtendedLocale locale;
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locale.LoadSystemSettings();
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locale.GetLocale()->SetDateFormat(EDateEuropean);
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User::LeaveIfError(locale.SaveSystemSettings());
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}
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TBool Util::DaylightSavingsAppliesL(const TTime& utc)
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{
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// This algorithm needs the first day of the week to be monday
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TDay oldStart;
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TLocale set;
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oldStart = set.StartOfWeek();
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set.SetStartOfWeek(EMonday);
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set.Set();
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TBuf<9> min;
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TBuf<9> max;
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utc.FormatL(min, KDaylightSavingsMinFormat);
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utc.FormatL(max, KDaylightSavingsMaxFormat);
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// Get times representing the first/last possible day of this
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// year that daylight savings time change could change on
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TTime timeMin;
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User::LeaveIfError(timeMin.Set(min));
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TTime timeMax;
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User::LeaveIfError(timeMax.Set(max));
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// Find the last sunday in the respective months
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TTimeIntervalDays addMin(6 - timeMin.DayNoInWeek());
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TTimeIntervalDays addMax(6 - timeMax.DayNoInWeek());
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timeMin += addMin;
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timeMax += addMax;
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// The change happens at 1AM.
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TTimeIntervalHours hour(1);
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timeMin += hour;
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timeMax += hour;
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// Now we know which day the change occurs on.
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// Compare it to what the UTC is.
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TBool result = ((timeMin <= utc) && (timeMax > utc));
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// reset the first week day
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set.SetStartOfWeek(oldStart);
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set.Set();
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return result;
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}
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