Working on UCI support

+ UCIHandle class for communicating with an engine through UCI
+ UCIPlayer class for using an engine within the gui

src/dev/kske/chess/game/UCIPlayer.java

@@ -0,0 +1,40 @@
+package dev.kske.chess.game;
+
+import java.io.IOException;
+
+import dev.kske.chess.board.Piece.Color;
+import dev.kske.chess.uci.UCIHandle;
+
+/**
+ * Project: <strong>Chess</strong><br>
+ * File: <strong>UCIPlayer.java</strong><br>
+ * Created: <strong>18.07.2019</strong><br>
+ * Author: <strong>Kai S. K. Engelbart</strong>
+ */
+public class UCIPlayer extends Player {
+
+	private UCIHandle handle;
+
+	public UCIPlayer(Color color, String enginePath) {
+		super(color);
+		try {
+			handle = new UCIHandle(enginePath);
+		} catch (IOException ex) {
+			ex.printStackTrace();
+		}
+	}
+
+	@Override
+	public void requestMove() {
+
+	}
+
+	@Override
+	public void cancelMove() {
+
+	}
+
+	public void disconnect() {
+
+	}
+}

src/dev/kske/chess/uci/UCIHandle.java

@@ -0,0 +1,73 @@
+package dev.kske.chess.uci;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.io.PrintWriter;
+
+/**
+ * Project: <strong>Chess</strong><br>
+ * File: <strong>UCIHandle.java</strong><br>
+ * Created: <strong>18.07.2019</strong><br>
+ * Author: <strong>Kai S. K. Engelbart</strong>
+ */
+public class UCIHandle {
+
+	private final Process			process;
+	private final BufferedReader	in;
+	private final PrintWriter		out;
+
+	private String name, author;
+
+	public UCIHandle(String enginePath) throws IOException {
+		process	= new ProcessBuilder(enginePath).start();
+		in		= new BufferedReader(new InputStreamReader(process.getInputStream()));
+		out		= new PrintWriter(process.getOutputStream());
+	}
+
+	public void processInput() {
+		try {
+			while (in.ready())
+				parse(in.readLine());
+		} catch (IndexOutOfBoundsException ex) {
+			System.err.println("Too few arguments were provided!");
+			ex.printStackTrace();
+		} catch (IOException ex) {
+			ex.printStackTrace();
+		}
+	}
+
+	private void parse(String line) {
+		String command = line.substring(0, line.indexOf(' '));
+		switch (command) {
+			case "id":
+				parseId(line.substring(command.length() + 1));
+				break;
+			default:
+				System.err.printf("Unknown command '%s' found!%n", command);
+		}
+	}
+
+	private void parseId(String line) {
+		String	param	= line.substring(line.indexOf(' '));
+		String	arg		= line.substring(param.length() + 1);
+		switch (line) {
+			case "name":
+				name = arg;
+				break;
+			case "author":
+				author = arg;
+				break;
+			default:
+				System.err.printf("Unknown parameter '%s' for command 'id' found!%n", param);
+		}
+	}
+
+	public void uci() {
+		out.println("uci");
+	}
+
+	public String getName() { return name; }
+
+	public String getAuthor() { return author; }
+}