com.thebuzzmedia.exiftool.core.strategies.DefaultStrategy Maven / Gradle / Ivy

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/**
 * Copyright 2011 The Buzz Media, LLC
 * Copyright 2015 Mickael Jeanroy 
 *
 * 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 com.thebuzzmedia.exiftool.core.strategies;

import com.thebuzzmedia.exiftool.Constants;
import com.thebuzzmedia.exiftool.ExecutionStrategy;
import com.thebuzzmedia.exiftool.Version;
import com.thebuzzmedia.exiftool.logs.Logger;
import com.thebuzzmedia.exiftool.logs.LoggerFactory;
import com.thebuzzmedia.exiftool.process.Command;
import com.thebuzzmedia.exiftool.process.CommandExecutor;
import com.thebuzzmedia.exiftool.process.OutputHandler;
import com.thebuzzmedia.exiftool.process.command.CommandBuilder;

import java.io.IOException;
import java.util.List;

/**
 * This is the default strategy.
 *
 * 

 *
 * For each execution, a one-shot process is:
 * 
 *   Created using withExecutor.
 *   Used to execute command line.
 *   Closed at the end of the execution.
 * 
 */
public class DefaultStrategy implements ExecutionStrategy {

	/**
	 * Class Logger.
	 */
	private static final Logger log = LoggerFactory.getLogger(DefaultStrategy.class);

	/**
	 * Create strategy.
	 */
	public DefaultStrategy() {
	}

	@Override
	public void execute(CommandExecutor executor, String exifTool, List arguments, OutputHandler handler) throws IOException {
		log.debug("Using ExifTool in non-daemon mode (-stay_open False)...");

		Command cmd = CommandBuilder.builder(exifTool, arguments.size() + 2)
				.addArgument("-sep", Constants.SEPARATOR)
				.addAll(arguments)
				.build();

		executor.execute(cmd, handler);
	}

	@Override
	public boolean isSupported(Version version) {
		// Always true.
		return true;
	}

	@Override
	public boolean isRunning() {
		// Just return false.
		return false;
	}

	@Override
	public void close() {
		// Nothing to do here.
	}

	@Override
	public void shutdown() {
		// Nothing to do here.
	}
}