/*

* Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

*

* Redistribution and use in source and binary forms, with or without

* modification, are permitted provided that the following conditions are met:

*

* - Redistributions of source code must retain the above copyright notice,

*   this list of conditions and the following disclaimer.

* - Redistributions in binary form must reproduce the above copyright notice,

*   this list of conditions and the following disclaimer in the documentation

*   and/or other materials provided with the distribution.

* - Neither the name of Nokia Corporation nor the names of its contributors

*   may be used to endorse or promote products derived from this software

*   without specific prior written permission.

*

* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"

* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE

* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR

* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF

* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS

* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN

* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)

* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

* POSSIBILITY OF SUCH DAMAGE.

* 

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description: 

*

*/

using System;

using System.Collections.Generic;

using System.Text;

using HeapLib.Statistics;

namespace HeapLib.Cells.Descriptors.Implementations.Unicode

{

    internal class DesUnicodeAlgorithmModifiableBuffers : DesUnicodeAlgorithmBase

    {

        #region Constructors & destructor

        public DesUnicodeAlgorithmModifiableBuffers( HeapStatistics aStats )

            : base( aStats )

        {

        }

        #endregion

        #region From DescriptorAlgorithmBase

        internal override bool IsDescriptor( HeapCell aCell, out DescriptorInfo aInfo )

        {

            // Base-class makes first pass.

            bool isDes = base.IsDescriptor( aCell, out aInfo );

            //

            if ( isDes )

            {

                DescriptorInfo info = new DescriptorInfo( aCell, true );

                HeapCell.TDescriptorType type = info.Type;

                // There needs to be at least two raw items, one for the descriptor type & length, and 

                // another for the max length.

                if ( type != HeapCell.TDescriptorType.EUnknown && RawItems.Count > 2 && type == HeapCell.TDescriptorType.EBuf )

                {

                    // Now we can check if it meet our requirements...

                    int length = base.CalculatedDescriptorLength;

                    int maxLength = base.CalculatedDescriptorMaxLength;

                    //

                    bool allWerePrintableCharacers = false;

                    int printCharCount = PrintableCharacterCount( length, DesUnicodeAlgorithmBase.KDescriptorRawItemOffsetEBufC, out allWerePrintableCharacers );

                    //

                    if ( printCharCount == length && length <= maxLength )

                    {

                        aInfo = info;

                        aInfo.Text = ConvertToText( length, DesUnicodeAlgorithmBase.KDescriptorRawItemOffsetEBufC );

                        isDes = true;

                    }

                }

                else if ( type == HeapCell.TDescriptorType.EBufCPtr )

                {

                    int x = 0;

                    x++;

                }

            }

            //

            return isDes;

        }

        #endregion

    }

}