--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/contentmgmt/contentaccessfwfordrm/source/cafutils/bitset.cpp Wed Jul 08 11:25:26 2009 +0100
@@ -0,0 +1,309 @@
+/*
+* Copyright (c) 2003-2009 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of the License "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:
+*
+*/
+
+
+#ifndef REMOVE_CAF1
+
+#include <e32std.h>
+#include <s32strm.h>
+#include <stdarg.h>
+#include <caf/caftypes.h>
+#include "bitset.h"
+
+using namespace ContentAccess;
+
+EXPORT_C CBitset* CBitset::NewLC(TInt aMaxBits)
+ {
+ CBitset* self = new(ELeave) CBitset();
+ CleanupStack::PushL(self);
+ self->ConstructL(aMaxBits);
+ return self;
+ }
+
+EXPORT_C CBitset* CBitset::NewL(TInt aMaxBits)
+ {
+ CBitset* self=CBitset::NewLC(aMaxBits);
+ CleanupStack::Pop(self);
+ return self;
+ }
+
+EXPORT_C CBitset* CBitset::NewLC(const CBitset& aSource)
+ {
+ CBitset* self = new (ELeave) CBitset(aSource);
+ CleanupStack::PushL(self);
+ self->ConstructL(aSource);
+ return self;
+ }
+
+EXPORT_C CBitset* CBitset::NewL(const CBitset& aSource)
+ {
+ CBitset* self=CBitset::NewLC(aSource);
+ CleanupStack::Pop(self);
+ return self;
+ }
+
+CBitset::~CBitset()
+ {
+ delete [] iBitSet;
+ }
+
+CBitset::CBitset()
+ {
+ }
+
+CBitset::CBitset(const CBitset& aSource)
+ : iWidth(aSource.iWidth), iMaxBits(aSource.iMaxBits)
+ {
+ }
+
+void CBitset::IdentifyBit(TInt aBitId, // in
+ TInt &aByte, // out
+ TInt &aBitInByte) const // out
+ {
+ // Identify the byte & bit corresponding to the Id
+ aByte = aBitId / 8;
+ aBitInByte = aBitId % 8;
+ }
+
+EXPORT_C void CBitset::Invert()
+ {
+ // Invert array
+ for (TInt j = 0; j < iWidth ; j++)
+ {
+ iBitSet[j] = static_cast<TUint8> (~iBitSet[j]);
+ }
+ }
+
+EXPORT_C TInt CBitset::MaxBits() const
+ {
+ return iMaxBits;
+ }
+
+EXPORT_C void CBitset::Set(TInt aBit)
+ {
+ __ASSERT_ALWAYS(ValidBit(aBit), User::Panic(KCafUtilsPanic, EInvalidBit));
+
+ TInt targetByte;
+ TInt targetBit;
+ IdentifyBit(aBit, targetByte, targetBit);
+
+ // Or-in the relevant bit
+ iBitSet[targetByte] |= (1 << targetBit);
+ }
+
+EXPORT_C void CBitset::Unset(TInt aBit)
+ {
+ __ASSERT_ALWAYS(ValidBit(aBit), User::Panic(KCafUtilsPanic, EInvalidBit));
+ TInt targetByte;
+ TInt targetBit;
+ IdentifyBit(aBit, targetByte, targetBit);
+
+ // And-in NOT(the relevant bit)
+ iBitSet[targetByte] &= ~(1 << targetBit);
+ }
+
+EXPORT_C TBool CBitset::IsSet(TInt aBit) const
+ {
+ __ASSERT_ALWAYS(ValidBit(aBit), User::Panic(KCafUtilsPanic, EInvalidBit));
+
+ TInt targetByte;
+ TInt targetBit;
+ IdentifyBit(aBit, targetByte, targetBit);
+
+ // And-in the relevant bit and test for non-zero
+ if (iBitSet[targetByte] & (1 << targetBit))
+ {
+ return(ETrue);
+ }
+ else
+ {
+ return(EFalse);
+ }
+ }
+
+EXPORT_C void CBitset::Reset()
+ {
+ // Reset the array
+ Mem::FillZ(iBitSet, iWidth);
+ }
+
+EXPORT_C void CBitset::SetAll()
+ {
+ Mem::Fill(iBitSet, iWidth, 0xFF);
+ }
+
+void CBitset::ConstructL(TInt aMaxBits)
+ {
+ // Calculate the required number of bytes
+ iMaxBits = aMaxBits;
+ iWidth = 1 + aMaxBits / 8;
+
+ iBitSet = new (ELeave) TUint8[iWidth];
+ Reset(); // Zero the set
+ }
+
+void CBitset::ConstructL(const CBitset& aSource)
+ {
+ // Copy the bits of the source
+ iBitSet = new (ELeave) TUint8[iWidth];
+ Mem::Copy(iBitSet, aSource.iBitSet, iWidth);
+ }
+
+EXPORT_C void CBitset::ExternalizeL(RWriteStream& aStream) const
+ {
+ // Write the max-Id
+ aStream.WriteInt32L(iMaxBits);
+ // Create a descriptor to encapsulate the set
+ TPtrC8 ptr(iBitSet, iWidth);
+ // Write the descriptor
+ aStream.WriteL(ptr);
+ }
+
+EXPORT_C void CBitset::InternalizeL(RReadStream& aStream)
+ {
+ // Delete the array
+ delete [] iBitSet;
+ iBitSet = NULL; // safety
+ // Call the constructor with the max-Id value
+ ConstructL(aStream.ReadInt32L());
+ // Create a descriptor to encapsulate the set
+ TPtr8 ptr(iBitSet, 0, iWidth);
+ // Load into the descriptor
+ aStream.ReadL(ptr);
+ }
+
+//
+// NB: leavescan will complain that this method calls a leaving
+// function. The Leave is properly documented in the header
+// file. Other than that, not much can be done, especially this
+// class has already been deprecated.
+EXPORT_C CBitset& CBitset::operator=(const CBitset& aSource)
+ {
+ // avoid self-assignment
+ if (this == &aSource)
+ {
+ return *this;
+ }
+
+ // check for source/dest size mismatch
+ if (aSource.iWidth != iWidth)
+ {
+ // always use largest width
+ TInt widest = iWidth;
+ if (widest < aSource.iWidth)
+ {
+ widest = aSource.iWidth;
+ }
+
+ // Malloc the desired width
+ TUint8 *temp = (TUint8 *) new (ELeave) TUint8[widest];
+
+ // And zero
+ Mem::FillZ(temp, widest);
+
+ // Now it is safe to re-assign the set
+ delete [] iBitSet;
+ iBitSet = temp;
+ iWidth = widest;
+ }
+
+ // Width may be the same, but the Max-Id may not, so
+ // align these here
+ iMaxBits = aSource.iMaxBits;
+
+ // Based on the source-size, copy the bitset
+ Mem::Copy(iBitSet, aSource.iBitSet, aSource.iWidth);
+
+ return *this;
+ }
+
+EXPORT_C TBool CBitset::operator==(const CBitset& aSource) const
+ {
+ TBool result = ETrue;
+ if (this == &aSource)
+ {
+ return ETrue;
+ }
+ TInt narrowest = iMaxBits;
+ if (narrowest > aSource.iMaxBits)
+ {
+ narrowest = aSource.iMaxBits;
+ }
+
+ // Compare the first "narrowest/8" bytes - if the result is non-zero,
+ // then they are not equal
+ if (Mem::Compare(iBitSet, narrowest/8, aSource.iBitSet, narrowest/8))
+ {
+ return EFalse;
+ }
+
+ // Now, compare the last set of bits manually
+ for (TInt i = narrowest/8 * 8; i < narrowest; ++i)
+ {
+ // Comparison of booleans - compare their negations
+ if (!IsSet(i) != !aSource.IsSet(i))
+ {
+ return EFalse;
+ }
+ }
+
+ return result;
+ }
+
+EXPORT_C void CBitset::SetListL(TInt aItems, ...)
+ {
+ va_list ap;
+ va_start(ap, aItems);
+
+ // Create a new set (of identical size)
+ CBitset *tempSet = CBitset::NewLC(iMaxBits);
+
+ // Duplicate this into temporary bitset
+ *tempSet = *this;
+
+ for (TInt i = 0; i < aItems; i++)
+ {
+ TInt x = va_arg(ap, TInt);
+ tempSet->Set(x);
+ }
+
+ // No failure, so copy back into this
+ *this = *tempSet;
+ va_end(ap);
+
+ CleanupStack::Pop(tempSet);
+ delete tempSet;
+ }
+
+EXPORT_C TBool CBitset::IsSetList(TInt aItems, ...) const
+ {
+ va_list ap;
+ va_start(ap, aItems);
+
+ for (TInt i = 0; i < aItems; i++)
+ {
+ TInt x = va_arg(ap, TInt);
+ if (!IsSet(x))
+ {
+ return (EFalse);
+ }
+ }
+ va_end(ap);
+ return (ETrue);
+ }
+
+#endif // #ifndef REMOVE_CAF1