sl@0: // Copyright (c) 1998-2009 Nokia Corporation and/or its subsidiary(-ies).
sl@0: // All rights reserved.
sl@0: // This component and the accompanying materials are made available
sl@0: // under the terms of "Eclipse Public License v1.0"
sl@0: // which accompanies this distribution, and is available
sl@0: // at the URL "http://www.eclipse.org/legal/epl-v10.html".
sl@0: //
sl@0: // Initial Contributors:
sl@0: // Nokia Corporation - initial contribution.
sl@0: //
sl@0: // Contributors:
sl@0: //
sl@0: // Description:
sl@0: // implementation for d32comp.h
sl@0: // 
sl@0: //
sl@0: 
sl@0: #include "UD_STD.H"
sl@0: #include "D32COMP.H"
sl@0: 
sl@0: const TInt KCompareBufSize=0x200;	// 0.5K
sl@0: 
sl@0: // class Comp
sl@0: 
sl@0: TInt Comp::Compare(TReal32 aLeft,TReal32 aRight) __SOFTFP
sl@0: 	{
sl@0: 	return aLeft<aRight ? -1 : aLeft!=aRight;
sl@0: 	}
sl@0: 
sl@0: TInt Comp::Compare(TReal64 aLeft,TReal64 aRight) __SOFTFP
sl@0: 	{
sl@0: 	return aLeft<aRight ? -1 : aLeft!=aRight;
sl@0: 	}
sl@0: 
sl@0: TInt Comp::Compare(const TInt64& aLeft,const TInt64& aRight)
sl@0: 	{
sl@0: 	return aLeft<aRight ? -1 : aLeft!=aRight;
sl@0: 	}
sl@0: 
sl@0: TInt Comp::Compare8L(MStreamBuf& aBufL,MStreamBuf& aBufR,TInt aSize,const TTextOps& aTextOp)
sl@0: 	{
sl@0: 	const TInt KCompareBufLength=KCompareBufSize/sizeof(TText8);
sl@0: 	RReadStream left(&aBufL);
sl@0: 	RReadStream right(&aBufR);
sl@0: 	TText8 bufL[KCompareBufLength];
sl@0: 	TText8 bufR[KCompareBufLength];
sl@0: 	TInt read=KCompareBufLength;
sl@0: 	do
sl@0: 		{
sl@0: 		if (aSize<=read)
sl@0: 			read=aSize;
sl@0: 		left.ReadL(bufL,read);
sl@0: 		right.ReadL(bufR,read);
sl@0: 		TInt r=aTextOp.Compare(bufL,read,bufR,read);
sl@0: 		if (r!=0)
sl@0: 			return r;
sl@0: 		aSize-=KCompareBufLength;
sl@0: 		} while (aSize>0);
sl@0: 	return 0;
sl@0: 	}
sl@0: 
sl@0: TInt Comp::Compare8L(MStreamBuf& aBuf,const TText8* aPtr,TInt aSize,const TTextOps& aTextOp)
sl@0: 	{
sl@0: 	const TInt KCompareBufLength=KCompareBufSize/sizeof(TText8);
sl@0: 	RReadStream strm(&aBuf);
sl@0: 	TText8 buf[KCompareBufLength];
sl@0: 	TInt read=KCompareBufLength;
sl@0: 	do
sl@0: 		{
sl@0: 		if (aSize<read)
sl@0: 			read=aSize;
sl@0: 		strm.ReadL(buf,read);
sl@0: 		TInt r=aTextOp.Compare(buf,read,aPtr,read);
sl@0: 		if (r!=0)
sl@0: 			return r;
sl@0: 		aPtr+=KCompareBufLength;
sl@0: 		aSize-=KCompareBufLength;
sl@0: 		} while (aSize>0);
sl@0: 	return 0;
sl@0: 	}
sl@0: 
sl@0: TInt Comp::Compare8L(MStreamBuf& aBuf,TInt aSize,const TDesC8& aDes,const TTextOps& aTextOp)
sl@0: 	{
sl@0: 	const TText8* ptr=aDes.Ptr();
sl@0: 	TInt size=aDes.Length();
sl@0: 	TInt r=Compare8L(aBuf,ptr,Min(size,aSize),aTextOp);
sl@0: 	return r ? r : aSize-size;
sl@0: 	}
sl@0: 
sl@0: TInt Comp::Compare16L(MStreamBuf& aBufL,MStreamBuf& aBufR,TInt aSize,const TTextOps& aTextOp)
sl@0: 	{
sl@0: 	aSize >>= 1;
sl@0: 	const TInt KCompareBufLength=KCompareBufSize/sizeof(TText16);
sl@0: 	RReadStream left(&aBufL);
sl@0: 	RReadStream right(&aBufR);
sl@0: 	TText16 bufL[KCompareBufLength];
sl@0: 	TText16 bufR[KCompareBufLength];
sl@0: 	TInt read=KCompareBufLength;
sl@0: 	do
sl@0: 		{
sl@0: 		if (aSize<=read)
sl@0: 			read=aSize;
sl@0: 		left.ReadL(bufL,read);
sl@0: 		right.ReadL(bufR,read);
sl@0: 		TInt r=aTextOp.Order(bufL,read,bufR,read);
sl@0: 		if (r!=0)
sl@0: 			return r;
sl@0: 		aSize-=KCompareBufLength;
sl@0: 		} while (aSize>0);
sl@0: 	return 0;
sl@0: 	}
sl@0: 
sl@0: TInt Comp::Compare16L(MStreamBuf& aBuf,const TText16* aPtr,TInt aSize,const TTextOps& aTextOp)
sl@0: 	{
sl@0: 	aSize >>= 1;
sl@0: 	const TInt KCompareBufLength=KCompareBufSize/sizeof(TText16);
sl@0: 	RReadStream strm(&aBuf);
sl@0: 	TText16 buf[KCompareBufLength];
sl@0: 	TInt read=KCompareBufLength;
sl@0: 	do
sl@0: 		{
sl@0: 		if (aSize<read)
sl@0: 			read=aSize;
sl@0: 		strm.ReadL(buf,read);
sl@0: 		TInt r=aTextOp.Order(buf,read,aPtr,read);
sl@0: 		if (r!=0)
sl@0: 			return r;
sl@0: 		aPtr+=KCompareBufLength;
sl@0: 		aSize-=KCompareBufLength;
sl@0: 		} while (aSize>0);
sl@0: 	return 0;
sl@0: 	}
sl@0: 
sl@0: static TInt DoCompare16L(MStreamBuf& aBuf,const TText16* aPtr,TInt aLen,const TTextOps& aTextOp)
sl@0: 	{
sl@0: 	const TInt KCompareBufLength=KCompareBufSize/sizeof(TText16);
sl@0: 	RReadStream strm(&aBuf);
sl@0: 	TText16 buf[KCompareBufLength];
sl@0: 	TInt read=KCompareBufLength;
sl@0: 	do
sl@0: 		{
sl@0: 		if (aLen<read)
sl@0: 			read=aLen;
sl@0: 		strm.ReadL(buf,read);
sl@0: 		TInt r=aTextOp.Compare(buf,read,aPtr,read);
sl@0: 		if (r!=0)
sl@0: 			return r;
sl@0: 		aPtr+=KCompareBufLength;
sl@0: 		aLen-=KCompareBufLength;
sl@0: 		} while (aLen>0);
sl@0: 	return 0;
sl@0: 	}
sl@0: 	
sl@0: TInt Comp::Compare16L(MStreamBuf& aBuf,TInt aSize,const TDesC16& aDes,const TTextOps& aTextOp)
sl@0: 	{
sl@0: 	const TText16* ptr=aDes.Ptr();
sl@0: 	TInt size=aDes.Length()<<1;
sl@0: 	TInt r=::DoCompare16L(aBuf,ptr,Min(size,aSize)>>1,aTextOp);
sl@0: 	return r ? r : aSize-size;
sl@0: 	}
sl@0: