1 // Copyright (c) 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 * @file barsreadimpl.h

    17 *

    18 * @internalComponent

    19 * @released

    20 */

    21 #ifndef __BARSREADIMPL_H__

    22 #define __BARSREADIMPL_H__

    23 

    24 #include "commontypes.h"

    25 

    26 /** Interprets resource data read from a resource file.

    27 

    28 To use an instance of this class, pass the buffer containing the resource 

    29 data to it by calling SetBuffer().

    30 

    31 The buffer containing the resource data is created by RResourceFile::AllocReadL()/CResourceFile::AllocReadL() 

    32 which reads the specified resource into it.

    33 

    34 The current position within the buffer is always maintained and any request 

    35 for data is always supplied from the current position. The current position 

    36 is always updated .

    37 

    38 Expected behaviour when assignment operator or copy constructor is called:

    39 The class doesn't have assignment operator and copy constructor, so the compiler generated

    40 ones will be used. The buffer used by the source class instance will be shared with the 

    41 destination class instance. However source and destination instances will have their own 

    42 current position pointers, both pointed initially to the same buffer position.

    43 

    44 @internalComponent

    45 @see TResourceReaderImpl::SetBuffer()

    46 @see CResourceFile::AllocReadL() */

    47 class TResourceReaderImpl

    48     {

    49 public:

    50 	TResourceReaderImpl();

    51 

    52 	void	SetBuffer(const Ptr8* aBuffer);

    53 	void	ResetBuffer();

    54     const	TAny* Ptr();

    55 

    56     // Read counted strings into allocated buffer

    57 	Ptr16*	ReadHBufCL();

    58 

    59     // Build pointer from a counted string

    60     PtrC8*  ReadTPtrC8L();

    61 	PtrC16* ReadTPtrC16L();

    62 

    63     TInt	ReadInt8L();

    64     TUint32 ReadUint8L();

    65     TInt	ReadInt16L();

    66 	TInt	ReadInt32L();

    67     TUint32 ReadUint32L();

    68 

    69     void	ReadL(TAny* aPtr,TInt aLength);

    70 

    71 private:

    72     void	MovePtrL(const TUint8* aPtr);

    73 private:

    74 		

    75 	const Ptr8*		iBuffer;

    76     const TUint8*	iCurrentPtr;

    77     };

    78 

    79 #endif//__BARSREADIMPL_H__