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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.model;
+
+import com.github.cereda.arara.controller.ConfigurationController;
+
+/**
+ * Implements a stopwatch.
+ * @author Paulo Roberto Massa Cereda
+ * @version 4.0
+ * @since 4.0
+ */
+public class StopWatch {
+
+ // two variables indicating the
+ // times the stopwatch started
+ // and stopped
+ private static long beginning = 0;
+ private static long end = 0;
+
+ // a variable to indicate the
+ // stopwatch is enabled; so far,
+ // it hasn't started, then it is
+ // not enabled
+ private static boolean enabled = false;
+
+ /**
+ * Starts the stopwatch.
+ */
+ public static void start() {
+ beginning = System.nanoTime();
+ enabled = true;
+ }
+
+ /**
+ * Stops the stopwatch.
+ */
+ public static void stop() {
+ end = System.nanoTime();
+ }
+
+ /**
+ * Gets the string representation of the elapsed time.
+ * @return A string representation of the elapsed time.
+ */
+ public static String getTime() {
+ Language language = (Language) ConfigurationController.
+ getInstance().get("execution.language");
+ double result = enabled ? (double) (end - beginning) / 1000000000 : 0.0;
+ return String.format(language.getLocale(), "%1.2f", result);
+ }
+
+}