Load unit data from ra.yaml

OpenRa.FileFormats/MiniYaml.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.IO;
+
+namespace OpenRa.FileFormats
+{
+	public class MiniYaml
+	{
+		public string Value;
+		public Dictionary<string, MiniYaml> Nodes = new Dictionary<string,MiniYaml>();
+
+		public MiniYaml( string value ) : this( value, new Dictionary<string, MiniYaml>() ) { }
+
+		public MiniYaml( string value, Dictionary<string, MiniYaml> nodes )
+		{
+			Value = value;
+			Nodes = nodes;
+		}
+
+		public static Dictionary<string, MiniYaml> FromFile( string path )
+		{
+			var lines = File.ReadAllLines( path );
+
+			var levels = new List<Dictionary<string, MiniYaml>>();
+			levels.Add( new Dictionary<string, MiniYaml>() );
+
+			foreach( var line in lines )
+			{
+				var t = line.TrimStart( ' ', '\t' );
+				if( t.Length == 0 || t[ 0 ] == '#' )
+					continue;
+				var level = line.Length - t.Length;
+
+				if( levels.Count <= level )
+					throw new InvalidOperationException( "Bad indent in miniyaml" );
+				while( levels.Count > level + 1 )
+					levels.RemoveAt( levels.Count - 1 );
+
+				var colon = t.IndexOf( ':' );
+				var d = new Dictionary<string, MiniYaml>();
+
+				if( colon == -1 )
+					levels[ level ].Add( t.Trim(), new MiniYaml( null, d ) );
+				else
+				{
+					var value = t.Substring( colon + 1 ).Trim();
+					if( value.Length == 0 )
+						value = null;
+					levels[ level ].Add( t.Substring( 0, colon ).Trim(), new MiniYaml( value, d ) );
+				}
+				levels.Add( d );
+			}
+			return levels[ 0 ];
+		}
+	}
+}