+++ /dev/null
-/*
- * 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.IOException;
-import java.util.List;
-
-import org.hedgecode.chess.uci.annotation.CommandDirection;
-import org.hedgecode.chess.uci.command.CommandParams;
-
-/**
- * External UCI Engine Runner.
- *
- * @author Dmitry Samoshin aka gotty
- */
-public final class ExternalEngineRunner implements EngineRunner {
-
- private Process process;
- private ProcessBuilder processBuilder;
-
- private ExternalEngine engine;
-
- private boolean isInit = false;
-
- ExternalEngineRunner(String extEngineCommand) {
- processBuilder = new ProcessBuilder(extEngineCommand);
- }
-
- ExternalEngineRunner(List<String> extEngineCommands) {
- processBuilder = new ProcessBuilder(extEngineCommands);
- }
-
- @Override
- public Engine init() throws EngineException {
- if (isInit)
- throw new EngineException("uci.engine.already.init");
-
- try {
- process = processBuilder.start();
- } catch (IOException e) {
- throw new EngineException("uci.engine.external.start", e.getLocalizedMessage());
- }
-
- engine = new ExternalEngine(
- process.getInputStream(),
- process.getOutputStream()
- );
- isInit = true;
-
- return engine;
- }
-
- @Override
- public void run(final CommandExecutor commandExecutor) throws EngineException {
- if (!isInit)
- throw new EngineException("uci.engine.not.init");
-
- Thread engineThread = new Thread(
- new Runnable() {
- public void run() {
- Transmitter<String> engineTransmitter = engine.transmitter();
- try {
- while (engineTransmitter.hasCommand()) {
- String command = engineTransmitter.transmitCommand();
- if (command.isEmpty()) continue;
- CommandParams commandParams = new CommandParams(command);
- commandExecutor.exec(
- commandParams.getName(),
- CommandDirection.FROM_ENGINE,
- commandParams.getParams()
- );
- }
- } finally {
- commandExecutor.exec(
- UCIConstants.TERMINATE,
- CommandDirection.FROM_ENGINE,
- null
- );
- engineTransmitter.stop();
- engineTransmitter.close();
- if (process.isAlive()) process.destroy();
- isInit = false;
- }
- }
- }
- );
- engineThread.start();
- }
-
-}