[LIB-9] Replace engine sending commands via transmitter

[chesshog.git] / src / main / java / org / hedgecode / chess / uci / ExternalEngineTransmitter.java

diff --git a/src/main/java/org/hedgecode/chess/uci/ExternalEngineTransmitter.java b/src/main/java/org/hedgecode/chess/uci/ExternalEngineTransmitter.java
new file mode 100644 (file)
index 0000000..3a20bb1
--- /dev/null
+++ b/src/main/java/org/hedgecode/chess/uci/ExternalEngineTransmitter.java
@@ -0,0 +1,67 @@
+/*
+ * Copyright (c) 2018. Developed by Hedgecode.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.hedgecode.chess.uci;
+
+import java.io.InputStream;
+import java.util.Scanner;
+
+/**
+ *
+ *
+ * @author Dmitry Samoshin aka gotty
+ */
+public class ExternalEngineTransmitter implements Transmitter<String> {
+
+    private Scanner scanner;
+    private boolean isActive;
+
+    ExternalEngineTransmitter(InputStream input) {
+        scanner = new Scanner(input);
+        isActive = true;
+    }
+
+    @Override
+    public boolean isActive() {
+        return isActive;
+    }
+
+    @Override
+    public boolean hasCommand() {
+        return isActive && scanner.hasNextLine();
+    }
+
+    @Override
+    public String transmitCommand() {
+        return scanner.nextLine();
+    }
+
+    @Override
+    public void addCommand(String command) {
+        // not supported for external engine
+    }
+
+    @Override
+    public void stop() {
+        isActive = false;
+    }
+
+    @Override
+    public void close() {
+        scanner.close();
+    }
+
+}