static Maze GetMaze(string fileName)
{
const string RECORD_DELIMITER = "-1";
using (var fs = new FileStream(fileName, FileMode.Open, FileAccess.Read, FileShare.ReadWrite))
using (var sr = new StreamReader(fs, Encoding.Default))
{
var dimensions = GetDimensions(sr.ReadLine());
var maze = new Maze(dimensions.First(), dimensions.Last());
if (sr.ReadLine() != RECORD_DELIMITER)
{
throw new Exception("Invalid Definition File Format!!");
}
string line = sr.ReadLine();
while (line != RECORD_DELIMITER)
{
var mirrorRegex = new Regex("(?:RR|RL|LR|LL|R|L)");
var mirrorMatch = mirrorRegex.Match(line);
var mirrorDetails = mirrorRegex.Match(line).Value;
Lean lean = mirrorDetails.Substring(0, 1) == "R" ? Lean.Right : Lean.Left;
ReflectiveSide side = mirrorDetails.Length == 2 ? mirrorDetails.Substring(1, 1) == "R" ? ReflectiveSide.Right : ReflectiveSide.Left : ReflectiveSide.Both;
var mirrorDimensions = GetDimensions(line.Substring(0, mirrorMatch.Index));
maze.AddMirror(new Mirror(lean, side), new Room(mirrorDimensions.First(), mirrorDimensions.Last()));
line = sr.ReadLine();
}
line = sr.ReadLine();
var entryRoomRegex = new Regex("(?:V|H)");
var entryRoomMatch = entryRoomRegex.Match(line);
var entryRoomDetails = entryRoomRegex.Match(line).Value;
var entryRoomDimensions = GetDimensions(line.Substring(0, entryRoomMatch.Index));
maze.EntryRoom = new Room(entryRoomDimensions.First(), entryRoomDimensions.Last());
maze.LazerOrientation = entryRoomDetails == "V" ? LaserOrientation.Vertical : LaserOrientation.Horizontal;
return(maze);
}
}