merge common implementations and server implementations

Emby.Server.Implementations/IO/SharpCifs/Util/Sharpen/Matcher.cs

@@ -0,0 +1,83 @@
+using System;
+using System.Text.RegularExpressions;
+
+namespace SharpCifs.Util.Sharpen
+{
+    internal class Matcher
+	{
+		private int _current;
+		private MatchCollection _matches;
+		private Regex _regex;
+		private string _str;
+
+		internal Matcher (Regex regex, string str)
+		{
+			this._regex = regex;
+			this._str = str;
+		}
+
+		public int End ()
+		{
+			if ((_matches == null) || (_current >= _matches.Count)) {
+				throw new InvalidOperationException ();
+			}
+			return (_matches[_current].Index + _matches[_current].Length);
+		}
+
+		public bool Find ()
+		{
+			if (_matches == null) {
+				_matches = _regex.Matches (_str);
+				_current = 0;
+			}
+			return (_current < _matches.Count);
+		}
+
+		public bool Find (int index)
+		{
+			_matches = _regex.Matches (_str, index);
+			_current = 0;
+			return (_matches.Count > 0);
+		}
+
+		public string Group (int n)
+		{
+			if ((_matches == null) || (_current >= _matches.Count)) {
+				throw new InvalidOperationException ();
+			}
+			Group grp = _matches[_current].Groups[n];
+			return grp.Success ? grp.Value : null;
+		}
+
+		public bool Matches ()
+		{
+			_matches = null;
+			return Find ();
+		}
+
+		public string ReplaceFirst (string txt)
+		{
+			return _regex.Replace (_str, txt, 1);
+		}
+
+		public Matcher Reset (CharSequence str)
+		{
+			return Reset (str.ToString ());
+		}
+
+		public Matcher Reset (string str)
+		{
+			_matches = null;
+			this._str = str;
+			return this;
+		}
+
+		public int Start ()
+		{
+			if ((_matches == null) || (_current >= _matches.Count)) {
+				throw new InvalidOperationException ();
+			}
+			return _matches[_current].Index;
+		}
+	}
+}