bool pt_PieceTable::_insertObject(pf_Frag * pf,
PT_BlockOffset fragOffset,
PTObjectType pto,
PT_AttrPropIndex indexAP,
pf_Frag_Object * & pfo)
{
pfo = NULL;
if (!_createObject(pto,indexAP,&pfo))
return false;
pfo->setXID(getXID());
if (fragOffset == 0)
{
// we are at the beginning of a fragment, insert the
// new object immediately prior to it.
m_fragments.insertFrag(pf->getPrev(),pfo);
}
else if (fragOffset == pf->getLength())
{
// we are at the end of a fragment, insert the new
// object immediately after it.
m_fragments.insertFrag(pf,pfo);
}
else
{
// if the insert is in the middle of the (text) fragment, we
// split the current fragment and insert the object between
// them.
UT_return_val_if_fail (pf->getType() == pf_Frag::PFT_Text, false);
pf_Frag_Text * pft = static_cast<pf_Frag_Text *>(pf);
UT_uint32 lenTail = pft->getLength() - fragOffset;
PT_BufIndex biTail = m_varset.getBufIndex(pft->getBufIndex(),fragOffset);
pf_Frag_Text * pftTail = new pf_Frag_Text(this,biTail,lenTail,pft->getIndexAP(),pft->getField());
if (!pftTail)
goto MemoryError;
pft->changeLength(fragOffset);
m_fragments.insertFrag(pft,pfo);
m_fragments.insertFrag(pfo,pftTail);
}
return true;
MemoryError:
if (pfo)
delete pfo;
return false;
}
bool pt_PieceTable::_makeObject(PTObjectType pto, const gchar ** attributes, pf_Frag_Object * &pfo)
{
// create a new object fragment at the current end of the document.
// this function can only be called while loading the document.
UT_return_val_if_fail (m_pts==PTS_Loading, false);
// Only a strux can be appended to an empty document
UT_return_val_if_fail (NULL != m_fragments.getFirst(), false);
// first, store the attributes and properties and get an index to them.
PT_AttrPropIndex indexAP;
if (!m_varset.storeAP(attributes,&indexAP))
return false;
if (!_createObject(pto,indexAP,&pfo))
return false;
return true;
}
