epsclist.cpp

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// $Id: epsclist.cpp 1282 2006-06-09 09:46:49Z alex $
/* @@tag:xara-cn@@ DO NOT MODIFY THIS LINE
================================XARAHEADERSTART===========================
 
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=================================XARAHEADEREND============================
 */
#include "camtypes.h"
//#include "epsclist.h" - in camtypes.h [AUTOMATICALLY REMOVED]
#include "epscdef.h"

CC_IMPLEMENT_DYNAMIC ( EPSCommentList, CCObject )

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

>   EPSCommentList::EPSCommentList ( void )

    Author:     Graeme_Sutherland (Xara Group Ltd) <camelotdev@xara.com>
    Created:    28/4/00
    Inputs:     -
    Returns:    -
    Purpose:    Creates the class, and sets all the variables to be a default value.
    SeeAlso:    EPSCommentList::~EPSCommentList

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

EPSCommentList::EPSCommentList ( void )
{
    // Set the comment list pointer to be NULL, so as to avoid any problems with adding
    // items to it.
    mpCommentList   = NULL;
    mListSize       = 0;
}

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

>   EPSCommentList::~EPSCommentList ( void )

    Author:     Graeme_Sutherland (Xara Group Ltd) <camelotdev@xara.com>
    Created:    28/4/00
    Inputs:     -
    Returns:    -
    Purpose:    Destroys the class, and all of its member variables.
    SeeAlso:    EPSCommentList::EPSCommentList

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

EPSCommentList::~EPSCommentList ( void )
{
    // Delete the list. This invokes a recursive call to remove all successive items.
    delete mpCommentList;
}

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

>   BOOL EPSCommentList::Add ( TCHAR    *pStart,
                               TCHAR    *pEnd,
                               BOOL     DoProcessComments,
                               UINT32       NestingDepth )

    Author:     Graeme_Sutherland (Xara Group Ltd) <camelotdev@xara.com>
    Created:    28/4/00
    Inputs:     pStart              - Pointer to the comment starting a comment block.
                pEnd                - Pointer to the comment that ends this block.
                DoProcessComments   - Do the comments need processing?
                NestingDepth        - The depth to which comments can be nested.
    Returns:    TRUE                - Success.
                FALSE               - The object was not created.
    Purpose:    Adds a list item to the end of mpCommentList record.
    SeeAlso:    EPSCommentDef::EPSCommentDef

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

BOOL EPSCommentList::Add ( TCHAR    *pStart,
                           TCHAR    *pEnd,
                           BOOL     DoProcessComments,
                           UINT32       NestingDepth )
{
    // Create a new EPSCommentDef, and assign the appropriate values.
    EPSCommentDef   *pNewDef    = new EPSCommentDef ( pStart, pEnd, DoProcessComments,
                                                      NestingDepth );

    // Determine whether something was created.
    if ( pNewDef != NULL )
    {
        // Add it to the end of the list.
        if ( mpCommentList == NULL )
        {
            // The pointer is NULL, so just assign the value.
            mpCommentList = pNewDef;
        }
        else
        {
            // There already is a list, so add this to it.
            mpCommentList->Add ( pNewDef );
        }

        // Maintain a count of the number of elements in the list.
        mListSize ++;

        return TRUE;
    }
    else
    {
        // Not enough memory.
        return FALSE;
    }
}

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

>   const EPSCommentDef& EPSCommentList::ReturnElement ( INT32 Index );

    Author:     Graeme_Sutherland (Xara Group Ltd) <camelotdev@xara.com>
    Created:    1/5/00
    Inputs:     Index   - The number of the element to be accessed.
    Returns:    &pItem  - A reference to an item in the list.
    Purpose:    Returns a reference to the nth item in the linked list, where n = Index.

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

const EPSCommentDef& EPSCommentList::ReturnElement ( INT32 Index )
{
    // Set up the local variables.
    EPSCommentDef   *pItem  = mpCommentList;
    EPSCommentDef   *pNext  = NULL;
    INT32               Count   = 0;

    // Ensure that the comment list has been initialised.
    ERROR1IF ( pItem == NULL, EmptyDefinition,
               "The comment list hasn't been initialised!" );

    // Catch out-of-bounds calls.
    if ( Index >= mListSize )
        return EmptyDefinition;

    // Loop through the list until there are no more items, or we reach the right index.
    while ( pNext = pItem->GetNext (), Count < Index && pNext != NULL )
    {
        pItem = pNext;
        Count ++;
    }

    // Return the appropriate list item.
    return *pItem;
}

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