1 // Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).

     2 // All rights reserved.

     3 // This component and the accompanying materials are made available

     4 // under the terms of "Eclipse Public License v1.0"

     5 // which accompanies this distribution, and is available

     6 // at the URL "http://www.eclipse.org/legal/epl-v10.html".

     7 //

     8 // Initial Contributors:

     9 // Nokia Corporation - initial contribution.

    10 //

    11 // Contributors:

    12 //

    13 // Description:

    14 //

    15 

    16 #ifndef ICL_RECORDTABLE_H

    17 #define ICL_RECORDTABLE_H

    18 

    19 #include <e32base.h>

    20 

    21 /**

    22 This class is used for keeping track of the location and size of structures

    23 within container file formats to prevent infinite looping on corrupted files.

    24 

    25 @internalComponent

    26 */

    27 class CRecordTable : public CBase

    28 	{

    29 public:

    30 	static CRecordTable* NewL();

    31 	~CRecordTable();

    32 	TInt InsertRecordL(TInt aRecordStart, TInt aRecordLength);

    33 	void Reset();

    34 	TInt Count()

    35 		{

    36 		return iTable.Count();

    37 		}

    38 	

    39 protected:

    40 	CRecordTable();

    41 	

    42 public:

    43 	

    44 	class TRecord

    45 		{

    46 	public:

    47 		TInt iOffset;	// from start of file.

    48 		TInt iLength;	// in bytes.

    49 		

    50 	public:

    51 		TRecord(TInt aOffset, TInt aLength)

    52 		 :	iOffset(aOffset),

    53 		 	iLength(aLength)

    54 			{

    55 			}

    56 		

    57 		TBool Overlaps(const TRecord& aOther)

    58 			{

    59 			if (aOther.iOffset == iOffset)

    60 				{

    61 				return ETrue;

    62 				}

    63 	

    64 			if (aOther.iOffset < iOffset)

    65 				{

    66 				return ((aOther.iOffset + aOther.iLength) >= iOffset);

    67 				}

    68 

    69 			return ((iOffset + iLength) > aOther.iOffset);

    70 			}

    71 		};

    72 		

    73 private:

    74 	RArray<TRecord> iTable;

    75 	};

    76 

    77 #endif