[Modify] Replace it

websocket-sharp/Net/HttpUtility.cs

@@ -907,111 +907,7 @@ namespace WebSocketSharp.Net
       if (s.Length == 0)
         return s;
 
-      var entity = new StringBuilder ();
-      var output = new StringBuilder ();
-
-      // 0 -> nothing,
-      // 1 -> right after '&'
-      // 2 -> between '&' and ';' but no '#'
-      // 3 -> '#' found after '&' and getting numbers
-      var state = 0;
-
-      var number = 0;
-      var haveTrailingDigits = false;
-      foreach (var c in s) {
-        if (state == 0) {
-          if (c == '&') {
-            entity.Append (c);
-            state = 1;
-          }
-          else {
-            output.Append (c);
-          }
-
-          continue;
-        }
-
-        if (c == '&') {
-          state = 1;
-          if (haveTrailingDigits) {
-            entity.Append (number.ToString (CultureInfo.InvariantCulture));
-            haveTrailingDigits = false;
-          }
-
-          output.Append (entity.ToString ());
-          entity.Length = 0;
-          entity.Append ('&');
-
-          continue;
-        }
-
-        if (state == 1) {
-          if (c == ';') {
-            state = 0;
-            output.Append (entity.ToString ());
-            output.Append (c);
-            entity.Length = 0;
-          }
-          else {
-            number = 0;
-            if (c != '#')
-              state = 2;
-            else
-              state = 3;
-
-            entity.Append (c);
-          }
-        }
-        else if (state == 2) {
-          entity.Append (c);
-          if (c == ';') {
-            var key = entity.ToString ();
-            var entities = getEntities ();
-            if (key.Length > 1 && entities.ContainsKey (key.Substring (1, key.Length - 2)))
-              key = entities[key.Substring (1, key.Length - 2)].ToString ();
-
-            output.Append (key);
-            state = 0;
-            entity.Length = 0;
-          }
-        }
-        else if (state == 3) {
-          if (c == ';') {
-            if (number > 65535) {
-              output.Append ("&#");
-              output.Append (number.ToString (CultureInfo.InvariantCulture));
-              output.Append (";");
-            }
-            else {
-              output.Append ((char) number);
-            }
-
-            state = 0;
-            entity.Length = 0;
-            haveTrailingDigits = false;
-          }
-          else if (Char.IsDigit (c)) {
-            number = number * 10 + ((int) c - '0');
-            haveTrailingDigits = true;
-          }
-          else {
-            state = 2;
-            if (haveTrailingDigits) {
-              entity.Append (number.ToString (CultureInfo.InvariantCulture));
-              haveTrailingDigits = false;
-            }
-
-            entity.Append (c);
-          }
-        }
-      }
-
-      if (entity.Length > 0)
-        output.Append (entity.ToString ());
-      else if (haveTrailingDigits)
-        output.Append (number.ToString (CultureInfo.InvariantCulture));
-
-      return output.ToString ();
+      return htmlDecode (s);
     }
 
     public static void HtmlDecode (string s, TextWriter output)