public bool Find(IComparable key, CsvFieldCache cursor)
{
ExTraceGlobals.CommonTracer.TraceDebug((long)this.GetHashCode(), "CsvClusteredIndex Find");
long position = cursor.Position;
long num = cursor.Length;
bool flag = false;
while (position <= num - (long)cursor.ReadSize)
{
long num2 = cursor.Seek((num - position) / 2L + position);
if (!cursor.MoveNext(false))
{
num = num2;
}
else
{
object obj = null;
while (obj == null && cursor.MoveNext(false))
{
if (cursor.FieldCount != cursor.SchemaFieldCount)
{
flag = true;
}
obj = cursor.GetField(this.idx);
}
if (obj == null)
{
num = num2;
}
else if (key.CompareTo(obj) > 0)
{
position = cursor.Position;
}
else
{
num = num2;
}
}
}
cursor.Seek(position);
bool flag2 = this.Scan(key, cursor);
return(flag || flag2);
}
private bool Scan(IComparable key, CsvFieldCache cursor)
{
ExTraceGlobals.CommonTracer.TraceDebug((long)this.GetHashCode(), "CsvClusteredIndex Scan");
bool result = false;
while (cursor.MoveNext(false))
{
if (cursor.FieldCount != cursor.SchemaFieldCount)
{
result = true;
}
object field = cursor.GetField(this.idx);
if (field != null && key.CompareTo(field) <= 0)
{
break;
}
}
return(result);
}