- beginnings of map loading (INI parser works)

- fixed warnings in mix_decode.h

git-svn-id: svn://svn.ijw.co.nz/svn/OpenRa@1075 993157c7-ee19-0410-b2c4-bb4e9862e678

MapViewer/IniFile.cs

@@ -0,0 +1,88 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+using System.IO;
+using System.Text.RegularExpressions;
+
+namespace MapViewer
+{
+	class IniFile
+	{
+		Dictionary<string, IniSection> sections = new Dictionary<string, IniSection>();
+		IniSection currentSection;
+
+		public IniFile(Stream s)
+		{
+			
+			StreamReader reader = new StreamReader(s);
+			while (!reader.EndOfStream)
+			{
+				string line = reader.ReadLine();
+				if (!ProcessEntry(line))
+					ProcessSection(line);
+			}
+		}
+
+		Regex sectionPattern = new Regex(@"\[([^]]*)\]");
+		Regex entryPattern = new Regex(@"([^=]+)=([^;]*)");
+
+		bool ProcessSection(string line)
+		{
+			Match m = sectionPattern.Match(line);
+			if (m == null || !m.Success)
+				return false;
+
+			string sectionName = m.Groups[1].Value;
+			currentSection = new IniSection(sectionName);
+			sections.Add(sectionName, currentSection);
+
+			return true;
+		}
+
+		bool ProcessEntry(string line)
+		{
+			Match m = entryPattern.Match(line);
+			if (m == null || !m.Success)
+				return false;
+
+			if (currentSection == null)
+				throw new InvalidOperationException("No current INI section");
+
+			string keyName = m.Groups[1].Value;
+			string keyValue = m.Groups[2].Value;
+
+			currentSection.Add(keyName, keyValue);
+
+			return true;
+		}
+
+		public IniSection GetSection(string s)
+		{
+			IniSection section;
+			sections.TryGetValue(s, out section);
+			return section;
+		}
+	}
+
+	class IniSection
+	{
+		string name;
+		Dictionary<string, string> values = new Dictionary<string, string>();
+
+		public IniSection(string name)
+		{
+			this.name = name;
+		}
+
+		public void Add(string key, string value)
+		{
+			values.Add(key, value);
+		}
+
+		public string GetValue(string key, string defaultValue)
+		{
+			string s;
+			return values.TryGetValue( key, out s ) ? s : defaultValue;
+		}
+	}
+}