/** * Arara, the cool TeX automation tool * Copyright (c) 2012 -- 2019, Paulo Roberto Massa Cereda * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * 3. Neither the name of the project's author nor the names of its * contributors may be used to endorse or promote products derived from * this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY * WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ package com.github.cereda.arara.utils; import com.github.cereda.arara.model.Command; import com.github.cereda.arara.model.Pair; import org.zeroturnaround.exec.ProcessExecutor; import org.zeroturnaround.exec.ProcessResult; /** * Implements unsafe utilitary methods. * @author Paulo Roberto Massa Cereda * @version 4.0 * @since 4.0 */ public class UnsafeUtils { /** * Executes a system command from the underlying operating system and * returns a pair containing the exit status and the command output as a * string. * @param command The system command to be executed. * @return A pair containing the exit status and the system command output * as a string. */ public static Pair executeSystemCommand(Command command) { try { // create a process result with the provided // command, capturing the output ProcessResult result = new ProcessExecutor( command.getElements() ).readOutput(true).execute(); // return the pair containing the exit status // and the output string as UTF-8 return new Pair( result.getExitValue(), result.outputUTF8() ); } catch (Exception exception) { // quack, quack, do nothing, just // return a default error code // if something goes wrong, the default // error branch returns an exit status of // -99 and an empty string return new Pair(-99, ""); } } }