// Copyright (c) 1998-2009 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:

// implementation for d32comp.h

// 

//

#include "UD_STD.H"

#include "D32COMP.H"

const TInt KCompareBufSize=0x200;	// 0.5K

// class Comp

TInt Comp::Compare(TReal32 aLeft,TReal32 aRight) __SOFTFP

	{

	return aLeft<aRight ? -1 : aLeft!=aRight;

	}

TInt Comp::Compare(TReal64 aLeft,TReal64 aRight) __SOFTFP

	{

	return aLeft<aRight ? -1 : aLeft!=aRight;

	}

TInt Comp::Compare(const TInt64& aLeft,const TInt64& aRight)

	{

	return aLeft<aRight ? -1 : aLeft!=aRight;

	}

TInt Comp::Compare8L(MStreamBuf& aBufL,MStreamBuf& aBufR,TInt aSize,const TTextOps& aTextOp)

	{

	const TInt KCompareBufLength=KCompareBufSize/sizeof(TText8);

	RReadStream left(&aBufL);

	RReadStream right(&aBufR);

	TText8 bufL[KCompareBufLength];

	TText8 bufR[KCompareBufLength];

	TInt read=KCompareBufLength;

	do

		{

		if (aSize<=read)

			read=aSize;

		left.ReadL(bufL,read);

		right.ReadL(bufR,read);

		TInt r=aTextOp.Compare(bufL,read,bufR,read);

		if (r!=0)

			return r;

		aSize-=KCompareBufLength;

		} while (aSize>0);

	return 0;

	}

TInt Comp::Compare8L(MStreamBuf& aBuf,const TText8* aPtr,TInt aSize,const TTextOps& aTextOp)

	{

	const TInt KCompareBufLength=KCompareBufSize/sizeof(TText8);

	RReadStream strm(&aBuf);

	TText8 buf[KCompareBufLength];

	TInt read=KCompareBufLength;

	do

		{

		if (aSize<read)

			read=aSize;

		strm.ReadL(buf,read);

		TInt r=aTextOp.Compare(buf,read,aPtr,read);

		if (r!=0)

			return r;

		aPtr+=KCompareBufLength;

		aSize-=KCompareBufLength;

		} while (aSize>0);

	return 0;

	}

TInt Comp::Compare8L(MStreamBuf& aBuf,TInt aSize,const TDesC8& aDes,const TTextOps& aTextOp)

	{

	const TText8* ptr=aDes.Ptr();

	TInt size=aDes.Length();

	TInt r=Compare8L(aBuf,ptr,Min(size,aSize),aTextOp);

	return r ? r : aSize-size;

	}

TInt Comp::Compare16L(MStreamBuf& aBufL,MStreamBuf& aBufR,TInt aSize,const TTextOps& aTextOp)

	{

	aSize >>= 1;

	const TInt KCompareBufLength=KCompareBufSize/sizeof(TText16);

	RReadStream left(&aBufL);

	RReadStream right(&aBufR);

	TText16 bufL[KCompareBufLength];

	TText16 bufR[KCompareBufLength];

	TInt read=KCompareBufLength;

	do

		{

		if (aSize<=read)

			read=aSize;

		left.ReadL(bufL,read);

		right.ReadL(bufR,read);

		TInt r=aTextOp.Order(bufL,read,bufR,read);

		if (r!=0)

			return r;

		aSize-=KCompareBufLength;

		} while (aSize>0);

	return 0;

	}

TInt Comp::Compare16L(MStreamBuf& aBuf,const TText16* aPtr,TInt aSize,const TTextOps& aTextOp)

	{

	aSize >>= 1;

	const TInt KCompareBufLength=KCompareBufSize/sizeof(TText16);

	RReadStream strm(&aBuf);

	TText16 buf[KCompareBufLength];

	TInt read=KCompareBufLength;

	do

		{

		if (aSize<read)

			read=aSize;

		strm.ReadL(buf,read);

		TInt r=aTextOp.Order(buf,read,aPtr,read);

		if (r!=0)

			return r;

		aPtr+=KCompareBufLength;

		aSize-=KCompareBufLength;

		} while (aSize>0);

	return 0;

	}

static TInt DoCompare16L(MStreamBuf& aBuf,const TText16* aPtr,TInt aLen,const TTextOps& aTextOp)

	{

	const TInt KCompareBufLength=KCompareBufSize/sizeof(TText16);

	RReadStream strm(&aBuf);

	TText16 buf[KCompareBufLength];

	TInt read=KCompareBufLength;

	do

		{

		if (aLen<read)

			read=aLen;

		strm.ReadL(buf,read);

		TInt r=aTextOp.Compare(buf,read,aPtr,read);

		if (r!=0)

			return r;

		aPtr+=KCompareBufLength;

		aLen-=KCompareBufLength;

		} while (aLen>0);

	return 0;

	}

TInt Comp::Compare16L(MStreamBuf& aBuf,TInt aSize,const TDesC16& aDes,const TTextOps& aTextOp)

	{

	const TText16* ptr=aDes.Ptr();

	TInt size=aDes.Length()<<1;

	TInt r=::DoCompare16L(aBuf,ptr,Min(size,aSize)>>1,aTextOp);

	return r ? r : aSize-size;

	}