cxfmap.cpp

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// $Id: cxfmap.cpp 1282 2006-06-09 09:46:49Z alex $
// Defines a class that handles the fast look-up of tags when importing v2 files.
/* @@tag:xara-cn@@ DO NOT MODIFY THIS LINE
================================XARAHEADERSTART===========================
 
               Xara LX, a vector drawing and manipulation program.
                    Copyright (C) 1993-2006 Xara Group Ltd.
       Copyright on certain contributions may be held in joint with their
              respective authors. See AUTHORS file for details.

LICENSE TO USE AND MODIFY SOFTWARE
----------------------------------

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=================================XARAHEADEREND============================
 */

#include "camtypes.h"
//#include "cxfrech.h" - in camtypes.h [AUTOMATICALLY REMOVED]
#include "cxfmap.h"

CC_IMPLEMENT_DYNAMIC(CXaraFileMapTagToHandler,CCObject);

// This will get Camelot to display the filename and linenumber of any memory allocations
// that are not released at program exit
// Declare smart memory handling in Debug builds
#define new CAM_DEBUG_NEW

/********************************************************************************************

>   CXaraFileMapTagToHandler::CXaraFileMapTagToHandler()

    Author:     Mark_Neves (Xara Group Ltd) <camelotdev@xara.com>
    Created:    28/8/96
    Purpose:    The default constructor
    SeeAlso:    -

********************************************************************************************/

CXaraFileMapTagToHandler::CXaraFileMapTagToHandler()
{
    pMap = NULL;
}

/********************************************************************************************

>   CXaraFileMapTagToHandler::~CXaraFileMapTagToHandler()

    Author:     Mark_Neves (Xara Group Ltd) <camelotdev@xara.com>
    Created:    28/8/96
    Purpose:    The destructor
    SeeAlso:    -

********************************************************************************************/

CXaraFileMapTagToHandler::~CXaraFileMapTagToHandler()
{
    if (pMap != NULL)
        delete pMap;
}


/********************************************************************************************

>   void CXaraFileMapTagToHandler::Add(UINT32 Tag,CXaraFileRecordHandler* pHandler)

    Author:     Mark_Neves (Xara Group Ltd) <camelotdev@xara.com>
    Created:    28/8/96
    Imputs:     Tag = the tag that the given handler handles
                pHandler = ptr to a record handler
    Returns:    -
    Purpose:    Adds a map entry, associating the tag with the handler
    SeeAlso:    -

********************************************************************************************/

void CXaraFileMapTagToHandler::Add(UINT32 Tag,CXaraFileRecordHandler* pHandler)
{
    if (pHandler == NULL)
        return;

    if (pMap == NULL)
        pMap = new CMapLongToPtr;

    if (pMap != NULL)
        (*pMap)[INT32(Tag)] = (void *)pHandler;
}

/********************************************************************************************

>   CXaraFileRecordHandler* CXaraFileMapTagToHandler::LookUp(UINT32 Tag)

    Author:     Mark_Neves (Xara Group Ltd) <camelotdev@xara.com>
    Created:    28/8/96
    Imputs:     Tag = the tag
    Returns:    ptr to the handler for the given tag, or NULL if one can't be found
    Purpose:    Returns the handler associated with the given tag
    SeeAlso:    -

********************************************************************************************/

CXaraFileRecordHandler* CXaraFileMapTagToHandler::LookUp(UINT32 Tag)
{
    CXaraFileRecordHandler* pHandler = NULL;

    if (pMap != NULL)
    {
        CMapLongToPtr::iterator iter = pMap->find( INT32(Tag) );
        if( iter == pMap->end() )
            return NULL;

        pHandler = (CXaraFileRecordHandler *)iter->second;
    }

    return pHandler;
}

---