protected virtual void OnProgressUpdated(ProgressUpdatedEventArgs e)
{
if (ProgressUpdated != null)
{
ProgressUpdated(this, e);
}
}
public IEnumerable <Hit> Search(params string[] terms)
{
var locker = new Object();
Terms = terms.Select(t => Formatter.Format(t)).ToList();
var revList = Terms.Select(t => Reverse(t)).ToArray();
Terms.AddRange(revList);
Limit = Terms.OrderByDescending(t => t.Length).FirstOrDefault().Length;
var hitCache = new List <int>();
for (var pos = Start; pos < Stop; pos++)
{
var args = new ProgressUpdatedEventArgs(pos + 1);
OnProgressUpdated(args);
if (args.Cancel)
{
break;
}
var length = Stop - pos;
Parallel.For(FromSkip, ToSkip, new ParallelOptions
{
MaxDegreeOfParallelism = ToSkip - FromSkip
}, skip =>
{
var text = Range(Text, pos, Stop);
var size = (int)Math.Ceiling((double)(length / skip));
if (size < Limit)
{
return;
}
var sequence = Sequence(text, skip);
foreach (var term in Terms)
{
var indices = IndicesOf(sequence, term);
if (indices.Length == 0)
{
continue;
}
foreach (var index in indices)
{
var hindex = ((index * skip) + pos);
if (!hitCache.Contains(hindex))
{
lock (locker)
{
hitCache.Add(hindex);
Hits.Add(new Hit(term, hindex, pos, skip));
}
}
}
}
});
}
hitCache.Clear();
if (Proximity != -1)
{
Hits = GetProximalHits(Proximity).ToList();
}
Grid = OffsetHitsToGrid(Hits);
return(Hits);
}
protected virtual void OnProgressUpdated(ProgressUpdatedEventArgs e) => ProgressUpdated?.Invoke(this, e);