C++ CItemList::AddTail方法代码示例

/*****************************************************************************
* CTTSEngObj::AddNextSentItem *
*-----------------------------*
*   Locates the next sentence item in the stream and adds it to the list.
*   Returns true if the last item added is the end of the sentence.
****************************************************************************/
BOOL CTTSEngObj::AddNextSentItem( CItemList& ItemList )
{
    //--- Get the token
    ULONG ulIndex;
    CSentItem Item;
    Item.pItem = FindNextToken( m_pNextChar, m_pEndChar, m_pNextChar );

    //--- This case can occur when we hit the end of a text fragment.
    //    Returning at this point will cause advancement to the next fragment.
    if( Item.pItem == NULL )
    {
        return false;
    }

    const WCHAR* pTrailChar = m_pNextChar-1;
    ULONG TokenLen = m_pNextChar - Item.pItem;

    //--- Split off leading punction if any
    static const WCHAR LeadItems[] = { L'(', L'\"', L'{', L'\'', L'[' };
    while( TokenLen > 1 )
    {
        if( SearchSet( Item.pItem[0], LeadItems, sp_countof(LeadItems), &ulIndex ) )
        {
            CSentItem LItem;
            LItem.pItem           = Item.pItem;
            LItem.ulItemLen       = 1;
            LItem.pXmlState       = &m_pCurrFrag->State;
            LItem.ulItemSrcLen    = LItem.ulItemLen;
            LItem.ulItemSrcOffset = m_pCurrFrag->ulTextSrcOffset +
                                    ( LItem.pItem - m_pCurrFrag->pTextStart );
            ItemList.AddTail( LItem );
            ++Item.pItem;
            --TokenLen;
        }
        else
        {
            break;
        }
    }

    //--- Get primary item insert position
    SPLISTPOS ItemPos = ItemList.AddTail( Item );

    //--- Split off trailing punction if any.
    static const WCHAR EOSItems[] = { L'.', L'!', L'?' };
    static const WCHAR TrailItems[] = { L',', L'\"', L';', L':', L')', L'}', L'\'', L']' };
    SPLISTPOS NextPos = NULL;
    BOOL fIsEOS = false;
    while( TokenLen > 1 )
    {
        BOOL fAddTrailItem = false;
        if( SearchSet( *pTrailChar, EOSItems, sp_countof(EOSItems), &ulIndex ) )
        {
            fIsEOS = true;
            fAddTrailItem = true;
        }
        else if( SearchSet( *pTrailChar, TrailItems, sp_countof(TrailItems), &ulIndex ) )
        {
            fAddTrailItem = true;
        }

        if( fAddTrailItem )
        {
            CSentItem TItem;
            TItem.pItem           = pTrailChar;
            TItem.ulItemLen       = 1;
            TItem.pXmlState       = &m_pCurrFrag->State;
            TItem.ulItemSrcLen    = TItem.ulItemLen;
            TItem.ulItemSrcOffset = m_pCurrFrag->ulTextSrcOffset +
                                    ( TItem.pItem - m_pCurrFrag->pTextStart );
            NextPos = ItemList.InsertAfter( ItemPos, TItem );
            --TokenLen;
            --pTrailChar;
        }
        else
        {
            break;
        }
    }

    //--- Abreviation or sentence end?
    //    If we are at the end of the buffer then EOS is implied.
    if( *m_pNextChar == NULL )
    {
        fIsEOS = true;
        if( !SearchSet( *(m_pNextChar-1), EOSItems, sp_countof(EOSItems), &ulIndex ) )
        {
            //--- Terminate with a period if we are at the end of a buffer
            //    and no end of sentence punction has been added.
            static const WCHAR* pPeriod = L".";
            CSentItem EOSItem;
            EOSItem.pItem           = pPeriod;
            EOSItem.ulItemLen       = 1;
            EOSItem.pXmlState       = &m_pCurrFrag->State;
//.........这里部分代码省略.........

/*****************************************************************************
* CTTSEngObj::GetNextSentence *
*-----------------------------*
*   This method is used to create a list of items to be spoken.
****************************************************************************/
HRESULT CTTSEngObj::GetNextSentence( CItemList& ItemList )
{
    HRESULT hr = S_OK;

    //--- Clear the destination
    ItemList.RemoveAll();

    //--- Is there any work to do
    if( m_pCurrFrag == NULL )
    {
        hr = S_FALSE;
    }
    else
    {
        BOOL fSentDone = false;
        BOOL fGoToNextFrag = false;

        while( m_pCurrFrag && !fSentDone )
        {
            if( m_pCurrFrag->State.eAction == SPVA_Speak )
            {
                fSentDone = AddNextSentItem( ItemList );

                //--- Advance fragment?
                if( m_pNextChar >= m_pEndChar )
                {
                    fGoToNextFrag = true;
                }
            }
            else
            {
                //--- Add non spoken fragments
                CSentItem Item;
                Item.pItem           = m_pCurrFrag->pTextStart;
                Item.ulItemLen       = m_pCurrFrag->ulTextLen;
                Item.ulItemSrcOffset = m_pCurrFrag->ulTextSrcOffset;
                Item.ulItemSrcLen    = Item.ulItemLen;
                Item.pXmlState       = &m_pCurrFrag->State;
                ItemList.AddTail( Item );
                fGoToNextFrag = true;
            }

            if( fGoToNextFrag )
            {
                fGoToNextFrag = false;
                m_pCurrFrag = m_pCurrFrag->pNext;
                if( m_pCurrFrag )
                {
                    m_pNextChar = m_pCurrFrag->pTextStart;
                    m_pEndChar  = m_pNextChar + m_pCurrFrag->ulTextLen;
                }
                else
                {
                    m_pNextChar = NULL;
                    m_pEndChar  = NULL;
                }
            }
        } // end while

        if( ItemList.IsEmpty() )
        {
            hr = S_FALSE;
        }
    }
    return hr;
} /* CTTSEngObj::GetNextSentence */