public static int ComparePreRelease(PreRelease left, PreRelease right)
{
//if (ReferenceEquals(left, null)) throw new ArgumentNullException("Left operand can't be null.");
//if (ReferenceEquals(right, null)) throw new ArgumentNullException("Right operand can't be null.");
if (ReferenceEquals(left, right))
{
return(0);
}
else if (ReferenceEquals(left, null) && !ReferenceEquals(right, null) && right.Count == 0)
{
return(0);
}
else if (ReferenceEquals(left, null) && !ReferenceEquals(right, null) && right.Count > 0)
{
return(1);
}
else if (ReferenceEquals(right, null) && !ReferenceEquals(left, null) && left.Count == 0)
{
return(0);
}
else if (ReferenceEquals(right, null) && !ReferenceEquals(left, null) && left.Count > 0)
{
return(-1);
}
for (int i = 0; i < Math.Min(left.Count, right.Count); i++)
{
var ac = left[i];
var bc = right[i];
int anum, bnum;
var isanum = Int32.TryParse(ac, out anum);
var isbnum = Int32.TryParse(bc, out bnum);
int r;
if (isanum && isbnum)
{
r = anum.CompareTo(bnum);
if (r != 0)
{
return(anum.CompareTo(bnum));
}
}
else
{
if (isanum)
{
return(-1);
}
if (isbnum)
{
return(1);
}
r = String.CompareOrdinal(ac, bc);
if (r != 0)
{
return(r);
}
}
}
return(left.Count.CompareTo(right.Count));
}
public override bool Equals(object obj)
{
if (ReferenceEquals(obj, null))
{
return(false);
}
if (ReferenceEquals(this, obj))
{
return(true);
}
PreRelease other = (PreRelease)obj;
return(ComparePreRelease(this, other) == 0);
}