// insert a new line after the given one or in the very beginning if !pLine
LineList *wxFileConfig::LineListInsert(const wxString& str,
LineList *pLine)
{
if ( pLine == m_linesTail )
return LineListAppend(str);
LineList *pNewLine = new LineList(str);
if ( pLine == NULL ) {
// prepend to the list
pNewLine->SetNext(m_linesHead);
m_linesHead->SetPrev(pNewLine);
m_linesHead = pNewLine;
}
else {
// insert before pLine
LineList *pNext = pLine->Next();
pNewLine->SetNext(pNext);
pNewLine->SetPrev(pLine);
pNext->SetPrev(pNewLine);
pLine->SetNext(pNewLine);
}
return pNewLine;
}
void wxFileConfig::LineListRemove(LineList *pLine)
{
LineList *pPrev = pLine->Prev(),
*pNext = pLine->Next();
// first entry?
if ( pPrev == NULL )
m_linesHead = pNext;
else
pPrev->SetNext(pNext);
// last entry?
if ( pNext == NULL )
m_linesTail = pPrev;
else
pNext->SetPrev(pPrev);
delete pLine;
}