1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/os/persistentdata/persistentstorage/dbms/udbms/UD_COMP.CPP Fri Jun 15 03:10:57 2012 +0200
1.3 @@ -0,0 +1,161 @@
1.4 +// Copyright (c) 1998-2009 Nokia Corporation and/or its subsidiary(-ies).
1.5 +// All rights reserved.
1.6 +// This component and the accompanying materials are made available
1.7 +// under the terms of "Eclipse Public License v1.0"
1.8 +// which accompanies this distribution, and is available
1.9 +// at the URL "http://www.eclipse.org/legal/epl-v10.html".
1.10 +//
1.11 +// Initial Contributors:
1.12 +// Nokia Corporation - initial contribution.
1.13 +//
1.14 +// Contributors:
1.15 +//
1.16 +// Description:
1.17 +// implementation for d32comp.h
1.18 +//
1.19 +//
1.20 +
1.21 +#include "UD_STD.H"
1.22 +#include "D32COMP.H"
1.23 +
1.24 +const TInt KCompareBufSize=0x200; // 0.5K
1.25 +
1.26 +// class Comp
1.27 +
1.28 +TInt Comp::Compare(TReal32 aLeft,TReal32 aRight) __SOFTFP
1.29 + {
1.30 + return aLeft<aRight ? -1 : aLeft!=aRight;
1.31 + }
1.32 +
1.33 +TInt Comp::Compare(TReal64 aLeft,TReal64 aRight) __SOFTFP
1.34 + {
1.35 + return aLeft<aRight ? -1 : aLeft!=aRight;
1.36 + }
1.37 +
1.38 +TInt Comp::Compare(const TInt64& aLeft,const TInt64& aRight)
1.39 + {
1.40 + return aLeft<aRight ? -1 : aLeft!=aRight;
1.41 + }
1.42 +
1.43 +TInt Comp::Compare8L(MStreamBuf& aBufL,MStreamBuf& aBufR,TInt aSize,const TTextOps& aTextOp)
1.44 + {
1.45 + const TInt KCompareBufLength=KCompareBufSize/sizeof(TText8);
1.46 + RReadStream left(&aBufL);
1.47 + RReadStream right(&aBufR);
1.48 + TText8 bufL[KCompareBufLength];
1.49 + TText8 bufR[KCompareBufLength];
1.50 + TInt read=KCompareBufLength;
1.51 + do
1.52 + {
1.53 + if (aSize<=read)
1.54 + read=aSize;
1.55 + left.ReadL(bufL,read);
1.56 + right.ReadL(bufR,read);
1.57 + TInt r=aTextOp.Compare(bufL,read,bufR,read);
1.58 + if (r!=0)
1.59 + return r;
1.60 + aSize-=KCompareBufLength;
1.61 + } while (aSize>0);
1.62 + return 0;
1.63 + }
1.64 +
1.65 +TInt Comp::Compare8L(MStreamBuf& aBuf,const TText8* aPtr,TInt aSize,const TTextOps& aTextOp)
1.66 + {
1.67 + const TInt KCompareBufLength=KCompareBufSize/sizeof(TText8);
1.68 + RReadStream strm(&aBuf);
1.69 + TText8 buf[KCompareBufLength];
1.70 + TInt read=KCompareBufLength;
1.71 + do
1.72 + {
1.73 + if (aSize<read)
1.74 + read=aSize;
1.75 + strm.ReadL(buf,read);
1.76 + TInt r=aTextOp.Compare(buf,read,aPtr,read);
1.77 + if (r!=0)
1.78 + return r;
1.79 + aPtr+=KCompareBufLength;
1.80 + aSize-=KCompareBufLength;
1.81 + } while (aSize>0);
1.82 + return 0;
1.83 + }
1.84 +
1.85 +TInt Comp::Compare8L(MStreamBuf& aBuf,TInt aSize,const TDesC8& aDes,const TTextOps& aTextOp)
1.86 + {
1.87 + const TText8* ptr=aDes.Ptr();
1.88 + TInt size=aDes.Length();
1.89 + TInt r=Compare8L(aBuf,ptr,Min(size,aSize),aTextOp);
1.90 + return r ? r : aSize-size;
1.91 + }
1.92 +
1.93 +TInt Comp::Compare16L(MStreamBuf& aBufL,MStreamBuf& aBufR,TInt aSize,const TTextOps& aTextOp)
1.94 + {
1.95 + aSize >>= 1;
1.96 + const TInt KCompareBufLength=KCompareBufSize/sizeof(TText16);
1.97 + RReadStream left(&aBufL);
1.98 + RReadStream right(&aBufR);
1.99 + TText16 bufL[KCompareBufLength];
1.100 + TText16 bufR[KCompareBufLength];
1.101 + TInt read=KCompareBufLength;
1.102 + do
1.103 + {
1.104 + if (aSize<=read)
1.105 + read=aSize;
1.106 + left.ReadL(bufL,read);
1.107 + right.ReadL(bufR,read);
1.108 + TInt r=aTextOp.Order(bufL,read,bufR,read);
1.109 + if (r!=0)
1.110 + return r;
1.111 + aSize-=KCompareBufLength;
1.112 + } while (aSize>0);
1.113 + return 0;
1.114 + }
1.115 +
1.116 +TInt Comp::Compare16L(MStreamBuf& aBuf,const TText16* aPtr,TInt aSize,const TTextOps& aTextOp)
1.117 + {
1.118 + aSize >>= 1;
1.119 + const TInt KCompareBufLength=KCompareBufSize/sizeof(TText16);
1.120 + RReadStream strm(&aBuf);
1.121 + TText16 buf[KCompareBufLength];
1.122 + TInt read=KCompareBufLength;
1.123 + do
1.124 + {
1.125 + if (aSize<read)
1.126 + read=aSize;
1.127 + strm.ReadL(buf,read);
1.128 + TInt r=aTextOp.Order(buf,read,aPtr,read);
1.129 + if (r!=0)
1.130 + return r;
1.131 + aPtr+=KCompareBufLength;
1.132 + aSize-=KCompareBufLength;
1.133 + } while (aSize>0);
1.134 + return 0;
1.135 + }
1.136 +
1.137 +static TInt DoCompare16L(MStreamBuf& aBuf,const TText16* aPtr,TInt aLen,const TTextOps& aTextOp)
1.138 + {
1.139 + const TInt KCompareBufLength=KCompareBufSize/sizeof(TText16);
1.140 + RReadStream strm(&aBuf);
1.141 + TText16 buf[KCompareBufLength];
1.142 + TInt read=KCompareBufLength;
1.143 + do
1.144 + {
1.145 + if (aLen<read)
1.146 + read=aLen;
1.147 + strm.ReadL(buf,read);
1.148 + TInt r=aTextOp.Compare(buf,read,aPtr,read);
1.149 + if (r!=0)
1.150 + return r;
1.151 + aPtr+=KCompareBufLength;
1.152 + aLen-=KCompareBufLength;
1.153 + } while (aLen>0);
1.154 + return 0;
1.155 + }
1.156 +
1.157 +TInt Comp::Compare16L(MStreamBuf& aBuf,TInt aSize,const TDesC16& aDes,const TTextOps& aTextOp)
1.158 + {
1.159 + const TText16* ptr=aDes.Ptr();
1.160 + TInt size=aDes.Length()<<1;
1.161 + TInt r=::DoCompare16L(aBuf,ptr,Min(size,aSize)>>1,aTextOp);
1.162 + return r ? r : aSize-size;
1.163 + }
1.164 +