content: /*******************************************************************************
   * Copyright (c) 2009, 2019 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.cli.internal.commands;
  
  import java.io.File;
  import java.io.FileInputStream;
  import java.io.IOException;
  import java.io.PrintWriter;
  import java.util.ArrayList;
  import java.util.Date;
  import java.util.List;
  
  import org.jacoco.cli.internal.Command;
  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;
  import org.kohsuke.args4j.Argument;
  
  /**
   * The <code>execinfo</code> command.
   */
  public class ExecInfo extends Command {
  
  	@Argument(usage = "list of JaCoCo *.exec files to read", metaVar = "<execfiles>")
  	List<File> execfiles = new ArrayList<File>();
  
  	@Override
  	public String description() {
  		return "Print exec file content in human readable format.";
  	}
  
  	@Override
  	public int execute(final PrintWriter out, final PrintWriter err)
  			throws IOException {
  		if (execfiles.isEmpty()) {
  			out.println("[WARN] No execution data files provided.");
  		} else {
  			for (final File file : execfiles) {
  				dump(file, out);
  			}
  		}
  		return 0;
  	}
  
  	private void dump(final File file, final PrintWriter out)
  			throws IOException {
  		out.printf("[INFO] Loading exec file %s.%n", file);
  		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) {
  				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) {
  				out.printf("%016x  %3d of %3d   %s%n",
  						Long.valueOf(data.getId()),
  						Integer.valueOf(getHitCount(data.getProbes())),
  						Integer.valueOf(data.getProbes().length),
  						data.getName());
  			}
  		});
  		reader.read();
  		in.close();
  		out.println();
  	}
  
  	private int getHitCount(final boolean[] data) {
  		int count = 0;
  		for (final boolean hit : data) {
  			if (hit) {
  				count++;
  			}
  		}
  		return count;
  	}
  
  }
  