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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Collections;
using System.Diagnostics;
namespace Signum.Utilities
{
public class ProgressEnumerator<T>: IEnumerable<T>, IEnumerator<T>, IProgressInfo
{
DateTime start = DateTime.UtcNow;
int count;
int current = 0;
IEnumerator<T> enumerator;
public ProgressEnumerator(IEnumerable<T> source, int count)
{
enumerator = source.GetEnumerator();
this.count = count;
}
public IEnumerator<T> GetEnumerator()
{
return this;
}
IEnumerator IEnumerable.GetEnumerator()
{
return this;
}
public T Current
{
get { return enumerator.Current; }
}
object IEnumerator.Current
{
get { return current; }
}
public bool MoveNext()
{
if (enumerator.MoveNext())
{
current++;
return true;
}
return false;
}
public void Reset()
{
throw new NotImplementedException();
}
public void Dispose()
{
}
double IProgressInfo.Percentage
{
get { return 100 * ((IProgressInfo)this).Ratio; }
}
double IProgressInfo.Ratio
{
get { return count == 0 ? 0 : current / (double)count; }
}
TimeSpan IProgressInfo.Elapsed
{
get { return DateTime.UtcNow - start; }
}
TimeSpan IProgressInfo.Remaining
{
get
{
double ratio = ((IProgressInfo)this).Ratio;
return ratio == 0 ? TimeSpan.Zero : new TimeSpan((long)((((IProgressInfo)this).Elapsed.Ticks / ratio) * (1 - ratio)));
}
}
DateTime IProgressInfo.EstimatedFinish
{
get { return (DateTime.UtcNow + ((IProgressInfo)this).Remaining).ToLocalTime(); }
}
public override string ToString()
{
IProgressInfo me = (IProgressInfo)this;
TimeSpan ts = me.Remaining;
return "{0:0.00}% | {1}h {2:D2}m {3:D2}s -> {4}".Formato(me.Percentage, ts.Hours, ts.Minutes, ts.Seconds, me.EstimatedFinish);
}
}
public interface IProgressInfo
{
double Percentage { get; }
double Ratio { get; }
TimeSpan Elapsed { get; }
TimeSpan Remaining { get; }
DateTime EstimatedFinish { get; }
}
}
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I'm Computer Scientist, one of the founders of Signum Software, and the lead developer behind Signum Framework.
www.signumframework.com
I love programming in C#, Linq, Compilers, Algorithms, Functional Programming, Computer Graphics, Maths...