Everything is now OpenRA, not OpenRa

OpenRA.FileFormats/MiniYaml.cs

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+#region Copyright & License Information
+/*
+ * Copyright 2007,2009,2010 Chris Forbes, Robert Pepperell, Matthew Bowra-Dean, Paul Chote, Alli Witheford.
+ * This file is part of OpenRA.
+ * 
+ *  OpenRA is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ * 
+ *  OpenRA is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ * 
+ *  You should have received a copy of the GNU General Public License
+ *  along with OpenRA.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#endregion
+
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+
+namespace OpenRA.FileFormats
+{
+	using MiniYamlNodes = Dictionary<string, MiniYaml>;
+
+	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;
+		}
+
+		static Dictionary<string, MiniYaml> FromLines(string[] lines)
+		{
+			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];
+		}
+
+		public static Dictionary<string, MiniYaml> FromFile( string path )
+		{
+			return FromLines(File.ReadAllLines( path ));
+		}
+
+		public static Dictionary<string, MiniYaml> FromStream(Stream s)
+		{
+			using (var reader = new StreamReader(s))
+				return FromString(reader.ReadToEnd());
+		}
+
+		public static Dictionary<string, MiniYaml> FromString(string text)
+		{
+			return FromLines(text.Split('\n'));
+		}
+
+		public static Dictionary<string, MiniYaml> Merge( Dictionary<string, MiniYaml> a, Dictionary<string, MiniYaml> b )
+		{
+			if( a.Count == 0 )
+				return b;
+			if( b.Count == 0 )
+				return a;
+
+			var ret = new Dictionary<string, MiniYaml>();
+
+			var keys = a.Keys.Union( b.Keys ).ToList();
+
+			var noInherit = keys.Where( x => x.Length > 0 && x[ 0 ] == '-' ).Select( x => x.Substring( 1 ) ).ToList();
+
+			foreach( var key in keys )
+			{
+				MiniYaml aa, bb;
+				a.TryGetValue( key, out aa );
+				b.TryGetValue( key, out bb );
+
+				if( key.Length > 0 && key[ 0 ] == '-' )
+					continue;
+				else if( noInherit.Contains( key ) )
+				{
+					if( aa != null )
+						ret.Add( key, aa );
+				}
+				else
+					ret.Add( key, Merge( aa, bb ) );
+			}
+
+			return ret;
+		}
+
+		public static MiniYaml Merge( MiniYaml a, MiniYaml b )
+		{
+			if( a == null )
+				return b;
+			if( b == null )
+				return a;
+
+			return new MiniYaml( a.Value ?? b.Value, Merge( a.Nodes, b.Nodes ) );
+		}
+
+		public IEnumerable<string> ToLines(string name)
+		{
+			yield return name + ": " + Value;
+			if (Nodes != null)
+				foreach (var line in Nodes.ToLines(false))
+					yield return "\t" + line;
+		}
+	}
+
+	public static class MiniYamlExts
+	{
+		public static void WriteToFile(this MiniYamlNodes y, string filename)
+		{
+			File.WriteAllLines(filename, y.ToLines(true).Select(x => x.TrimEnd()).ToArray());
+		}
+
+		public static string WriteToString(this MiniYamlNodes y)
+		{
+			return string.Join("\n", y.ToLines(true).Select(x => x.TrimEnd()).ToArray());
+		}
+
+		public static IEnumerable<string> ToLines(this MiniYamlNodes y, bool lowest)
+		{
+			foreach (var kv in y)
+			{
+				foreach (var line in kv.Value.ToLines(kv.Key))
+					yield return line;
+				if (lowest)
+					yield return "";
+			}
+		}
+	}
+}