/// <summary>
/// If duplicated adjacent tags are present, reduce them to one copy
/// </summary>
/// <returns>true if cigar was altered by compression</returns>
public bool Compress()
{
DirectionOp?lastOp = null;
var newDirections = new List <DirectionOp>();
foreach (var directionOp in Directions)
{
if (lastOp == null)
{
// First time through
lastOp = directionOp;
}
else if (directionOp.Direction == ((DirectionOp)lastOp).Direction)
{
// Add the two ops together
lastOp = new DirectionOp
{
Direction = directionOp.Direction,
Length = directionOp.Length + ((DirectionOp)lastOp).Length
};
}
else
{
newDirections.Add((DirectionOp)lastOp);
lastOp = directionOp;
}
}
newDirections.Add((DirectionOp)lastOp);
Directions = newDirections;
return(true);
}
public CigarDirection(string directionString)
{
// Similar functionality to cigar string parsing
int head = 0;
for (int i = 0; i < directionString.Length; ++i)
{
if (Char.IsDigit(directionString, i))
{
continue;
}
// TODO check for unexpected chars
var length = uint.Parse(directionString.Substring(head, i - head));
var directionChar = directionString[i];
var direction = DirectionHelper.GetDirection(directionChar.ToString());
var op = new DirectionOp()
{
Direction = direction, Length = (int)length
};
Directions.Add(op);
head = i + 1;
}
if (head != directionString.Length)
{
throw new Exception(string.Format("Unexpected format in direction string: {0}", directionString));
}
}
