/*******************************************************************************
 * Copyright (c) 2009, 2012 Mountainminds GmbH & Co. KG and Contributors
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *    Marc R. Hoffmann - initial API and implementation
 *    
 *******************************************************************************/
package org.jacoco.examples;

import java.io.FileInputStream;
import java.io.IOException;
import java.util.Date;

import org.jacoco.core.data.ExecutionData;
import org.jacoco.core.data.ExecutionDataReader;
import org.jacoco.core.data.IExecutionDataVisitor;
import org.jacoco.core.data.ISessionInfoVisitor;
import org.jacoco.core.data.SessionInfo;

/**
 * This example reads given execution data files and dumps their content.
 */
public final class ExecDump {

	/**
	 * Reads all execution data files specified as the arguments and dumps the
	 * content.
	 * 
	 * @param args
	 *            list of execution data files
	 * @throws IOException
	 */
	public static void main(final String[] args) throws IOException {
		for (final String file : args) {
			dumpContent(file);
		}
	}

	private static void dumpContent(final String file) throws IOException {
		System.out.printf("exec file: %s%n", file);
		System.out.println("CLASS ID         HITS/PROBES   CLASS NAME");

		final FileInputStream in = new FileInputStream(file);
		final ExecutionDataReader reader = new ExecutionDataReader(in);
		reader.setSessionInfoVisitor(new ISessionInfoVisitor() {
			public void visitSessionInfo(final SessionInfo info) {
				System.out.printf("Session \"%s\": %s - %s%n", info.getId(),
						new Date(info.getStartTimeStamp()),
						new Date(info.getDumpTimeStamp()));
			}
		});
		reader.setExecutionDataVisitor(new IExecutionDataVisitor() {
			public void visitClassExecution(final ExecutionData data) {
				System.out.printf("%016x  %3d of %3d   %s%n",
						Long.valueOf(data.getId()),
						Integer.valueOf(getHitCount(data.getData())),
						Integer.valueOf(data.getData().length), data.getName());
			}
		});
		reader.read();
		in.close();
		System.out.println();
	}

	private static int getHitCount(final boolean[] data) {
		int count = 0;
		for (final boolean hit : data) {
			if (hit) {
				count++;
			}
		}
		return count;
	}

	private ExecDump() {
	}
}