NativeCommandRunner.java

/*
 * Copyright (C) 2012 Google Inc.
 *
 * 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 interactivespaces.util.process;

import interactivespaces.InteractiveSpacesException;

import java.util.List;

/**
 * A runner for native commands.
 *
 * @author Keith M. Hughes
 */
public class NativeCommandRunner {

  private static final String[] EMPTY_STRING_ARRAY = new String[0];

  /**
   * The status the process exited with.
   */
  private int exitStatus;

  /**
   * Execute the given command.
   *
   * @param command
   *          the command to execute
   */
  public void execute(List<String> command) {
    try {
      Process process = Runtime.getRuntime().exec(command.toArray(EMPTY_STRING_ARRAY));
      exitStatus = process.waitFor();
    } catch (Exception e) {
      throw new InteractiveSpacesException(String.format("Could not execute command %s", command),
          e);
    }
  }

  /**
   * Did the command exit successfully?
   *
   * @return {@code true} if it was successful.
   */
  public boolean isSuccess() {
    return exitStatus == 0;
  }
}