/// ------------------------------------------------------------------------------------
/// <summary>
/// Make a new cluster for missing/added.
/// </summary>
/// <param name="insertInOtherIndex">Index where added/missing cluster should be inserted in other.</param>
/// <param name="iItem">The index of the item.</param>
/// <param name="cluster">The cluster.</param>
/// <param name="fIsCurrent">if set to <c>true</c> extract from the current side;
/// <c>false</c> extract from the revision side.</param>
/// ------------------------------------------------------------------------------------
private void AddMissingAddedCluster(int insertInOtherIndex, int iItem, Cluster cluster, bool fIsCurrent)
{
Cluster newCluster = new Cluster();
newCluster.clusterType = (fIsCurrent) ? ClusterType.AddedToCurrent : ClusterType.MissingInCurrent;
newCluster.verseRefMin = cluster.verseRefMin;
newCluster.verseRefMax = cluster.verseRefMax;
newCluster.indexToInsertAtInOther = insertInOtherIndex;
newCluster.ItemList(fIsCurrent).Add(cluster.Item(iItem, fIsCurrent));
m_clusterList.Add(newCluster);
// Mark the item in the original complex cluster for later deletion
if (fIsCurrent)
cluster.itemsCurr[iItem] = null;
else
cluster.itemsRev[iItem] = null;
}
/// ------------------------------------------------------------------------------------
/// <summary>
/// Extracts the missing or added items from a cluster.
/// </summary>
/// <param name="cluster">The cluster.</param>
/// <param name="iFrom">Beginning limit for extracting items.</param>
/// <param name="iTo">Ending limit for extracting items.</param>
/// <param name="fIsCurrent">if set to <c>true</c> extract from the current side;
/// <c>false</c> extract from the revision side.</param>
/// <param name="fFwd">if <c>true</c> scanning forward; otherwise scan backward</param>
/// <returns>number of extracted added or missing empty ScrVerses</returns>
/// ------------------------------------------------------------------------------------
private int ExtractMissingAddedItems(Cluster cluster, int iFrom, int iTo, bool fIsCurrent,
bool fFwd)
{
// Determine index to insert in other.
int newIndexToInsertAtInOther;
if (cluster.indexToInsertAtInOther != -1)
newIndexToInsertAtInOther = cluster.indexToInsertAtInOther;
else
newIndexToInsertAtInOther = cluster.ItemList(fIsCurrent)[iFrom].indexInOwner;
Debug.Assert(newIndexToInsertAtInOther != -1);
int extracted = 0;
if (fFwd)
{
// Scan forward from end of matching empty paras at beginning of cluster
for (int iItem = iFrom; iItem < iTo; iItem++)
{
if (!cluster.Item(iItem, fIsCurrent).isStanzaBreak)
break;
AddMissingAddedCluster(newIndexToInsertAtInOther, iItem, cluster, fIsCurrent);
extracted++;
}
}
else
{
// Scan backward from end of matching empty paras at cluster end
for (int iItem = iFrom; iItem > iTo; iItem--)
{
if (!cluster.Item(iItem, fIsCurrent).isStanzaBreak)
break;
// Since we are handling added/missing items at the end of the cluster,
// we want to set the insertion point at the end of the other side.
AddMissingAddedCluster(newIndexToInsertAtInOther, iItem, cluster, fIsCurrent);
extracted++;
}
}
return extracted;
}