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+/**
+ * Arara, the cool TeX automation tool
+ * Copyright (c) 2012 -- 2018, 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<Integer, String> 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<Integer, String>(
+ 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<Integer, String>(-99, "");
+
+ }
+ }
+
+}