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/*
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* Copyright (c) 1997-2009 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 "wtlsdec.h"
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//stolen from stdlib
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#define WTLS_UNIX_BASE TTime(MAKE_TINT64(0x00dcddb3,0x0f2f8000)) // 00:00, Jan 1st 1970
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const TInt KTimeLength = 4;
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TWTLSDecVector::TWTLSDecVector(const TDesC8& aSource, TInt aMinLength, TInt aMaxLength)
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:iEncoding(aSource), iMinLength(aMinLength), iMaxLength(aMaxLength), iLengthOfContents(0), iLengthOfLength(0)
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{
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}
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void TWTLSDecVector::InitL()
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{
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if (iMaxLength <= 255)
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{
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iLengthOfLength = 1;
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}
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else
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{
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if (iMaxLength <= 65535)
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{
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iLengthOfLength = 2;
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}
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else
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{
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if (iMaxLength <= 16777215)
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{
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iLengthOfLength = 3;
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}
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else
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{
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iLengthOfLength = 4;
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}
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}
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}
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if (iEncoding.Length() < (iLengthOfLength + iMinLength))
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{
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User::Leave(KErrArgument);
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}
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TWTLSDecUnsignedInteger decLength;
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TInt pos = 0;
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iLengthOfContents = decLength.DecodeShortL(iEncoding, pos, iLengthOfLength);
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if (iEncoding.Length() < (iLengthOfLength + iLengthOfContents))
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{
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User::Leave(KErrArgument);
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}
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}
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/*
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TPtrC8 TWTLSDecVector::Encoding() const
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{
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return iEncoding.Left(EncodingLength());
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}
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*/
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TInt TWTLSDecVector::EncodingLength() const
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{
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return iLengthOfLength + iLengthOfContents;
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}
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/*
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TPtrC8 TWTLSDecVector::Content() const
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{
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return iEncoding.Mid(iLengthOfLength, iLengthOfContents);
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}
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TInt TWTLSDecVector::ContentLength() const
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{
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return iLengthOfContents;
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}
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TInt TWTLSDecVector::HeaderLength() const
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{
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return iLengthOfLength;
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}
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*/
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TWTLSDecUnsignedInteger::TWTLSDecUnsignedInteger()
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{
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}
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TInt TWTLSDecUnsignedInteger::DecodeShortL(const TDesC8& aSource,TInt& aPos, TInt aLength)
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{
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if (aLength > 4)
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{
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User::Leave(KErrOverflow);
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}
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TInt sourceLength = aSource.Length();
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TInt res=0;
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while (aLength)
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{
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if (sourceLength <= aPos)
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{
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User::Leave(KErrArgument);
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}
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res<<=8;
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res+=aSource[aPos++];
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aLength--;
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}
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return res;
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}
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RInteger TWTLSDecUnsignedInteger::DecodeLongL(const TDesC8& aSource,TInt& aPos, TInt aLength)
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{
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if (aSource.Length() < (aPos + aLength))
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{
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User::Leave(KErrArgument);
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}
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const TPtrC8 ptr = aSource.Mid(aPos, aLength);
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aPos += aLength;
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RInteger res = RInteger::NewL(ptr);
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return res;
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}
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TWTLSDecTime::TWTLSDecTime()
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{
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}
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TTime TWTLSDecTime::DecodeL(const TDesC8& aSource, TInt& aPos)
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{
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if ((aSource.Length() - aPos) < KTimeLength)
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{
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User::Leave(KErrArgument);
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}
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TWTLSDecUnsignedInteger decInt;
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TInt inc = decInt.DecodeShortL(aSource, aPos, 4);
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return WTLS_UNIX_BASE + TTimeIntervalSeconds(inc);
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}
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