sl@0: // Copyright (c) 1995-2009 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 the License "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: // f32\sfsrv\cl_entry.cpp
sl@0: // 
sl@0: //
sl@0: 
sl@0: #include "cl_std.h"
sl@0: 
sl@0: 
sl@0: /**
sl@0: Default constructor.
sl@0: */
sl@0: EXPORT_C TVolumeInfo::TVolumeInfo()
sl@0: 	{
sl@0:     Mem::FillZ(this, sizeof(TVolumeInfo)); //-- zero-fill itself
sl@0:     new(&iName)TBufC<KMaxFileName>;        //-- initialise broken descriptor 
sl@0:     }
sl@0: 
sl@0: 
sl@0: 
sl@0: 
sl@0: EXPORT_C TBool TEntry::IsReadOnly() const
sl@0: /**
sl@0: Tests whether the file or directory is read-only.
sl@0: 
sl@0: @return ETrue if entry is read-only, EFalse if not.
sl@0: 
sl@0: @see KEntryAttReadOnly
sl@0: */
sl@0: 	{
sl@0: 	return(iAtt&KEntryAttReadOnly);
sl@0: 	}
sl@0: 
sl@0: 
sl@0: 
sl@0: 
sl@0: EXPORT_C TBool TEntry::IsHidden() const
sl@0: /**
sl@0: Tests whether the file or directory is hidden.
sl@0: 
sl@0: @return ETrue if entry is hidden, EFalse if not.
sl@0: 
sl@0: @see KEntryAttHidden
sl@0: */
sl@0: 	{
sl@0: 
sl@0: 	return(iAtt&KEntryAttHidden);
sl@0: 	}
sl@0: 
sl@0: 
sl@0: 
sl@0: 
sl@0: EXPORT_C TBool TEntry::IsSystem() const
sl@0: /**
sl@0: Tests whether the file or directory has the system attribute set.
sl@0: 
sl@0: @return ETrue if entry is a system entry, EFalse if not.
sl@0: 
sl@0: @see KEntryAttSystem
sl@0: */
sl@0: 	{
sl@0: 
sl@0: 	return(iAtt&KEntryAttSystem);
sl@0: 	}
sl@0: 
sl@0: 
sl@0: 
sl@0: 
sl@0: EXPORT_C TBool TEntry::IsDir() const
sl@0: /**
sl@0: Tests whether the entry is a directory.
sl@0: 
sl@0: @return ETrue if entry indicates a directory, EFalse if not.
sl@0: 
sl@0: @see KEntryAttDir
sl@0: */
sl@0: 	{
sl@0: 
sl@0: 	return(iAtt&KEntryAttDir);
sl@0: 	}
sl@0: 
sl@0: 
sl@0: 
sl@0: 
sl@0: EXPORT_C TBool TEntry::IsArchive() const
sl@0: /**
sl@0: Tests whether the file is an archive file.
sl@0: 
sl@0: @return ETrue if file is archive, EFalse if not.
sl@0: 
sl@0: @see KEntryAttArchive
sl@0: */
sl@0: 	{
sl@0: 
sl@0: 	return(iAtt&KEntryAttArchive);
sl@0: 	}
sl@0: 
sl@0: 
sl@0: 
sl@0: 
sl@0: EXPORT_C TEntryArray::TEntryArray()
sl@0: 	: iCount(0)
sl@0: /**
sl@0: Default constructor.
sl@0: 
sl@0: Initialises its count of contained TEntry objects to zero.
sl@0: */
sl@0: 	{}
sl@0: 
sl@0: 
sl@0: 
sl@0: 
sl@0: EXPORT_C TInt TEntryArray::Count() const
sl@0: /**
sl@0: Gets the number of entries in the array.
sl@0: 
sl@0: @return The number of entries in the array.
sl@0: */
sl@0: 	{
sl@0: 
sl@0: 	if (iCount==KCountNeeded)
sl@0: 		{
sl@0: 		const TEntry* pE=(const TEntry*)iBuf.Ptr();
sl@0: 		const TEntry* pEnd=PtrAdd(pE,iBuf.Length());
sl@0: 		TInt c=0;
sl@0: 		while (pE<pEnd)
sl@0: 			{
sl@0: 			c++;
sl@0: 			pE=PtrAdd(pE,EntrySize(*pE, ETrue));
sl@0: 			}
sl@0: 		TEntryArray& me=(TEntryArray& )(*this);
sl@0: 		me.iCount=c;
sl@0: 		me.iIndex=0;
sl@0: 		me.iPos=(const TEntry*)iBuf.Ptr();
sl@0: 		}
sl@0: 	return(iCount);
sl@0: 	}
sl@0: 
sl@0: 
sl@0: 
sl@0: 
sl@0: EXPORT_C const TEntry& TEntryArray::operator[](TInt anIndex) const
sl@0: /**
sl@0: Gets the directory entry at the specified index.
sl@0: 
sl@0: @param anIndex Index of the entry within the array.
sl@0:                This value is relative to zero.
sl@0:                
sl@0: @return On return contains the entry at the specified index.
sl@0: 
sl@0: @panic FSCLIENT 22 if anIndex is greater than or equal to the number
sl@0:        of elements in the array.
sl@0: */
sl@0: 	{
sl@0: 
sl@0: 	__ASSERT_ALWAYS(anIndex<Count(),Panic(EEntryArrayBadIndex));
sl@0: 	const TEntry* pE=iPos;
sl@0: 	TInt ix=iIndex;
sl@0: 	if (anIndex<ix)
sl@0: 		{
sl@0: 		ix=0;
sl@0: 		pE=(const TEntry*)iBuf.Ptr();
sl@0: 		}
sl@0: 	while (ix<anIndex)
sl@0: 		{
sl@0: 		pE=PtrAdd(pE,EntrySize(*pE, ETrue));
sl@0: 		ix++;
sl@0: 		}
sl@0: 	TEntryArray& me=(TEntryArray& )(*this);
sl@0: 	me.iIndex=ix;
sl@0: 	me.iPos=pE;
sl@0: 	return(*pE);
sl@0: 	}
sl@0: 
sl@0: 
sl@0: 
sl@0: 
sl@0: EXPORT_C TEntry::TEntry()
sl@0: /**
sl@0: Default constructor.
sl@0: */
sl@0:  : iSizeHigh(0),
sl@0:    iReserved(0)
sl@0: 	{}
sl@0: 
sl@0: 
sl@0: 
sl@0: 
sl@0: EXPORT_C TEntry::TEntry(const TEntry& aEntry)
sl@0: /**
sl@0: Copy constructor.
sl@0: 
sl@0: @param aEntry The TEntry object to be copied.
sl@0: */
sl@0: 	{
sl@0: 	Copy(aEntry);
sl@0: 	Unpack();		// Check that unpacking is safe here - we need to verify that wherever
sl@0: 					// the entry is copied back into a TEntryArray that the iSizeHigh and
sl@0: 					// iReserved members are re-packaged and the attribute set accordingly.
sl@0: 					// (for example, CDir::Sort might do this, but I haven't checked - I know
sl@0: 					//  this uses the assignment operator, which is why that doesn't unpack...)
sl@0: 	}
sl@0: 
sl@0: 
sl@0: 
sl@0: 
sl@0: EXPORT_C TEntry& TEntry::operator=(const TEntry& aEntry)
sl@0: /**
sl@0: Assignment operator.
sl@0: 
sl@0: @param aEntry The TEntry object to be copied to this TEntry object.
sl@0: 
sl@0: @return A reference to this TEntry object.
sl@0: */
sl@0: 	{
sl@0: 	if(this!=&aEntry)
sl@0: 		{
sl@0: 		Copy(aEntry);
sl@0: 		Unpack();
sl@0: 		}
sl@0: 	return(*this);
sl@0: 	}
sl@0: 
sl@0: /**
sl@0: @internalTechnology
sl@0: @prototype
sl@0: */
sl@0: inline void TEntry::Unpack()
sl@0: 	{
sl@0: 	if(iAtt & KEntryAttPacked)
sl@0: 		{
sl@0: 		/**
sl@0: 		 * This entry is still in a packed form, so unpack it now by copying high length 
sl@0: 		 * and reserved bytes from the packed source to the to the unpacked target entry
sl@0: 		 */
sl@0: 		TUint32* pSizeHighSrc = PtrAdd((TUint32*)this, EntrySize(*this, EFalse));
sl@0: 		
sl@0: 		iSizeHigh = *pSizeHighSrc++;	// Copy iSizeHigh
sl@0: 		iReserved = *pSizeHighSrc;		// Copy iReserved
sl@0: 		
sl@0: 		iAtt &= ~KEntryAttPacked;
sl@0: 		}
sl@0: 	}
sl@0: 
sl@0: /**
sl@0: @internalTechnology
sl@0: @prototype
sl@0: */
sl@0: inline void TEntry::Copy(const TEntry& aEntry)
sl@0: 	{
sl@0: 	Mem::Copy(this,&aEntry,EntrySize(aEntry, ETrue));
sl@0: 	if(!(iAtt & KEntryAttPacked))
sl@0: 		{
sl@0: 		iSizeHigh = aEntry.iSizeHigh;
sl@0: 		iReserved = aEntry.iReserved;
sl@0: 		}
sl@0: 	}
sl@0: 
sl@0: 
sl@0: #ifndef SYMBIAN_ENABLE_64_BIT_FILE_SERVER_API
sl@0: /**
sl@0: @internalTechnology
sl@0: @prototype
sl@0: */
sl@0: #else
sl@0: /**
sl@0: Returns the file size in 64 bits.
sl@0: 
sl@0: This can be used to find the size of a file whose size is more than 2 GB - 1.
sl@0: 
sl@0: @return The file size in 64 bits
sl@0: 
sl@0: @publishedAll
sl@0: @prototype
sl@0: 
sl@0: @see TEntry::iSize
sl@0: */
sl@0: #endif
sl@0: EXPORT_C TInt64 TEntry::FileSize() const
sl@0: 	{
sl@0: #ifndef SYMBIAN_ENABLE_64_BIT_FILE_SERVER_API
sl@0: 	Panic(ENotImplemented);
sl@0: 	return (KErrNotSupported);	// To suppress warning!
sl@0: #else
sl@0: 	if(iAtt & KEntryAttPacked)
sl@0: 		{
sl@0: 		/**
sl@0: 		 * This entry is still in a packed form, so unpack it now by copying high length 
sl@0: 		 * and reserved bytes from the packed source to the to the unpacked target entry
sl@0: 		 */
sl@0: 		TUint32* pSizeHighSrc = PtrAdd((TUint32*)this, Align4(EntrySize(*this, EFalse)));
sl@0: 		return MAKE_TINT64(*pSizeHighSrc, iSize);
sl@0: 		}
sl@0: 
sl@0: 	return MAKE_TINT64(iSizeHigh, iSize);
sl@0: #endif
sl@0: 	}