author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Thu, 17 Dec 2009 09:24:54 +0200 | |
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permissions | -rw-r--r-- |
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// Copyright (c) 1995-2009 Nokia Corporation and/or its subsidiary(-ies). |
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// All rights reserved. |
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// This component and the accompanying materials are made available |
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// under the terms of the License "Eclipse Public License v1.0" |
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// which accompanies this distribution, and is available |
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// at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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// |
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// Initial Contributors: |
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// Nokia Corporation - initial contribution. |
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// |
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// Contributors: |
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// |
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// Description: |
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// f32\sfsrv\cl_entry.cpp |
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// |
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// |
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#include "cl_std.h" |
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/** |
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Default constructor. |
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*/ |
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EXPORT_C TVolumeInfo::TVolumeInfo() |
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{ |
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Mem::FillZ(this, sizeof(TVolumeInfo)); //-- zero-fill itself |
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new(&iName)TBufC<KMaxFileName>; //-- initialise broken descriptor |
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} |
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EXPORT_C TBool TEntry::IsReadOnly() const |
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/** |
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Tests whether the file or directory is read-only. |
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@return ETrue if entry is read-only, EFalse if not. |
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@see KEntryAttReadOnly |
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*/ |
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{ |
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return(iAtt&KEntryAttReadOnly); |
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} |
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EXPORT_C TBool TEntry::IsHidden() const |
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/** |
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Tests whether the file or directory is hidden. |
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@return ETrue if entry is hidden, EFalse if not. |
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@see KEntryAttHidden |
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*/ |
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{ |
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return(iAtt&KEntryAttHidden); |
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} |
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EXPORT_C TBool TEntry::IsSystem() const |
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/** |
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Tests whether the file or directory has the system attribute set. |
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@return ETrue if entry is a system entry, EFalse if not. |
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@see KEntryAttSystem |
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*/ |
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{ |
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return(iAtt&KEntryAttSystem); |
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} |
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EXPORT_C TBool TEntry::IsDir() const |
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/** |
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Tests whether the entry is a directory. |
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@return ETrue if entry indicates a directory, EFalse if not. |
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@see KEntryAttDir |
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*/ |
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{ |
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return(iAtt&KEntryAttDir); |
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} |
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EXPORT_C TBool TEntry::IsArchive() const |
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/** |
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Tests whether the file is an archive file. |
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@return ETrue if file is archive, EFalse if not. |
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@see KEntryAttArchive |
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*/ |
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{ |
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return(iAtt&KEntryAttArchive); |
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} |
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EXPORT_C TEntryArray::TEntryArray() |
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: iCount(0) |
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/** |
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Default constructor. |
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Initialises its count of contained TEntry objects to zero. |
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*/ |
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{} |
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EXPORT_C TInt TEntryArray::Count() const |
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/** |
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Gets the number of entries in the array. |
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@return The number of entries in the array. |
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*/ |
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{ |
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if (iCount==KCountNeeded) |
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{ |
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const TEntry* pE=(const TEntry*)iBuf.Ptr(); |
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const TEntry* pEnd=PtrAdd(pE,iBuf.Length()); |
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TInt c=0; |
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while (pE<pEnd) |
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{ |
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c++; |
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pE=PtrAdd(pE,EntrySize(*pE, ETrue)); |
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} |
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TEntryArray& me=(TEntryArray& )(*this); |
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me.iCount=c; |
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me.iIndex=0; |
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me.iPos=(const TEntry*)iBuf.Ptr(); |
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} |
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return(iCount); |
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} |
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EXPORT_C const TEntry& TEntryArray::operator[](TInt anIndex) const |
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/** |
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Gets the directory entry at the specified index. |
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@param anIndex Index of the entry within the array. |
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This value is relative to zero. |
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@return On return contains the entry at the specified index. |
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@panic FSCLIENT 22 if anIndex is greater than or equal to the number |
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of elements in the array. |
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*/ |
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{ |
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__ASSERT_ALWAYS(anIndex<Count(),Panic(EEntryArrayBadIndex)); |
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const TEntry* pE=iPos; |
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TInt ix=iIndex; |
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if (anIndex<ix) |
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{ |
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ix=0; |
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pE=(const TEntry*)iBuf.Ptr(); |
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} |
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while (ix<anIndex) |
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{ |
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pE=PtrAdd(pE,EntrySize(*pE, ETrue)); |
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ix++; |
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} |
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TEntryArray& me=(TEntryArray& )(*this); |
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me.iIndex=ix; |
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me.iPos=pE; |
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return(*pE); |
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} |
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EXPORT_C TEntry::TEntry() |
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/** |
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Default constructor. |
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*/ |
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: iSizeHigh(0), |
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iReserved(0) |
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{} |
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EXPORT_C TEntry::TEntry(const TEntry& aEntry) |
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/** |
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Copy constructor. |
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@param aEntry The TEntry object to be copied. |
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*/ |
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{ |
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Copy(aEntry); |
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Unpack(); // Check that unpacking is safe here - we need to verify that wherever |
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// the entry is copied back into a TEntryArray that the iSizeHigh and |
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// iReserved members are re-packaged and the attribute set accordingly. |
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// (for example, CDir::Sort might do this, but I haven't checked - I know |
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// this uses the assignment operator, which is why that doesn't unpack...) |
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} |
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EXPORT_C TEntry& TEntry::operator=(const TEntry& aEntry) |
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/** |
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Assignment operator. |
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@param aEntry The TEntry object to be copied to this TEntry object. |
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@return A reference to this TEntry object. |
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*/ |
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{ |
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if(this!=&aEntry) |
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{ |
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Copy(aEntry); |
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Unpack(); |
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} |
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return(*this); |
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} |
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/** |
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@internalTechnology |
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@prototype |
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*/ |
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inline void TEntry::Unpack() |
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{ |
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if(iAtt & KEntryAttPacked) |
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{ |
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/** |
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* This entry is still in a packed form, so unpack it now by copying high length |
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* and reserved bytes from the packed source to the to the unpacked target entry |
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*/ |
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TUint32* pSizeHighSrc = PtrAdd((TUint32*)this, EntrySize(*this, EFalse)); |
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iSizeHigh = *pSizeHighSrc++; // Copy iSizeHigh |
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iReserved = *pSizeHighSrc; // Copy iReserved |
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iAtt &= ~KEntryAttPacked; |
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} |
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} |
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/** |
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@internalTechnology |
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@prototype |
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*/ |
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inline void TEntry::Copy(const TEntry& aEntry) |
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{ |
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Mem::Copy(this,&aEntry,EntrySize(aEntry, ETrue)); |
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if(!(iAtt & KEntryAttPacked)) |
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{ |
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iSizeHigh = aEntry.iSizeHigh; |
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iReserved = aEntry.iReserved; |
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} |
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} |
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#ifndef SYMBIAN_ENABLE_64_BIT_FILE_SERVER_API |
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/** |
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@internalTechnology |
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@prototype |
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*/ |
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#else |
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/** |
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Returns the file size in 64 bits. |
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This can be used to find the size of a file whose size is more than 2 GB - 1. |
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@return The file size in 64 bits |
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@publishedAll |
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@prototype |
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@see TEntry::iSize |
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*/ |
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#endif |
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EXPORT_C TInt64 TEntry::FileSize() const |
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{ |
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#ifndef SYMBIAN_ENABLE_64_BIT_FILE_SERVER_API |
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Panic(ENotImplemented); |
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return (KErrNotSupported); // To suppress warning! |
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#else |
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if(iAtt & KEntryAttPacked) |
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{ |
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/** |
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* This entry is still in a packed form, so unpack it now by copying high length |
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* and reserved bytes from the packed source to the to the unpacked target entry |
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*/ |
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TUint32* pSizeHighSrc = PtrAdd((TUint32*)this, Align4(EntrySize(*this, EFalse))); |
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return MAKE_TINT64(*pSizeHighSrc, iSize); |
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} |
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return MAKE_TINT64(iSizeHigh, iSize); |
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#endif |
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} |