public int RemoveRun(DataRun run)
{
int idx = DataRuns.IndexOf(run);
if (idx < 0)
{
throw new ArgumentException("Attempt to remove non-existant run", nameof(run));
}
DataRuns.RemoveAt(idx);
return(idx);
}
public AttributeRecord Split(int suggestedSplitIdx)
{
int splitIdx;
if (suggestedSplitIdx <= 0 || suggestedSplitIdx >= DataRuns.Count)
{
splitIdx = DataRuns.Count / 2;
}
else
{
splitIdx = suggestedSplitIdx;
}
long splitVcn = (long)_startingVCN;
long splitLcn = 0;
for (int i = 0; i < splitIdx; ++i)
{
splitVcn += DataRuns[i].RunLength;
splitLcn += DataRuns[i].RunOffset;
}
List <DataRun> newRecordRuns = new List <DataRun>();
while (DataRuns.Count > splitIdx)
{
DataRun run = DataRuns[splitIdx];
DataRuns.RemoveAt(splitIdx);
newRecordRuns.Add(run);
}
// Each extent has implicit start LCN=0, so have to make stored runs match reality.
// However, take care not to stomp on 'sparse' runs that may be at the start of the
// new extent (indicated by Zero run offset).
for (int i = 0; i < newRecordRuns.Count; ++i)
{
if (!newRecordRuns[i].IsSparse)
{
newRecordRuns[i].RunOffset += splitLcn;
break;
}
}
_lastVCN = (ulong)splitVcn - 1;
return(new NonResidentAttributeRecord(_type, _name, 0, _flags, splitVcn, newRecordRuns));
}