public void Sort()
{
ISortStrategy sortStrategy;
using (var reader = new DataRecordReader(_options.Input))
{
var fileLength = reader.Length;
sortStrategy = fileLength < 1_000_000_000 // 1GB
? (ISortStrategy) new SmallFileStrategy()
: new DefaultStrategy();
SplitData(sortStrategy, reader, fileLength);
}
WriteResults(sortStrategy);
}
private void SplitData(ISortStrategy sortStrategy, DataRecordReader reader, long fileLength)
{
var timer = Stopwatch.StartNew();
var readerPositionPrev = 0L;
foreach (var dataRecord in reader)
{
var readerPosition = reader.Position;
if (readerPosition - readerPositionPrev > Constants.HundredMegabytes)
{
ShowProgress(readerPosition, fileLength, timer.Elapsed.TotalSeconds);
readerPositionPrev = readerPosition;
}
sortStrategy.Aggregate(dataRecord);
}
ShowProgress(reader.Position, fileLength, timer.Elapsed.TotalSeconds);
Console.WriteLine();
Console.WriteLine($"Splitting executed at {timer.Elapsed}");
}