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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.utils.CommonUtils;
+import java.io.File;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
+/**
+ * Implements a command model, containing a list of strings.
+ * @author Paulo Roberto Massa Cereda
+ * @version 4.0
+ * @since 4.0
+ */
+public class Command {
+
+ // a list of elements which are components
+ // of a command and represented as strings
+ private final List<String> elements;
+
+ // an optional file acting as a reference
+ // for the default working directory
+ private File workingDirectory;
+
+ /**
+ * Constructor.
+ * @param values An array of objects.
+ */
+ public Command(Object... values) {
+ elements = new ArrayList<String>();
+ List result = CommonUtils.flatten(Arrays.asList(values));
+ for (Object value : result) {
+ String element = String.valueOf(value);
+ if (!CommonUtils.checkEmptyString(element)) {
+ elements.add(element);
+ }
+ }
+ }
+
+ /**
+ * Constructor.
+ * @param elements A list of strings.
+ */
+ public Command(List<String> elements) {
+ this.elements = elements;
+ }
+
+ /**
+ * Gets the list of strings representing each element of a command.
+ * @return A list of strings.
+ */
+ public List<String> getElements() {
+ return elements;
+ }
+
+ /**
+ * Sets the working directory.
+ * @param workingDirectory A file representing the working directory.
+ */
+ public void setWorkingDirectory(File workingDirectory) {
+ this.workingDirectory = workingDirectory;
+ }
+
+ /**
+ * Gets the working directory, if any.
+ * @return A file representing the working directory.
+ */
+ public File getWorkingDirectory() {
+ return workingDirectory;
+ }
+
+ /**
+ * Checks if a working directory was defined.
+ * @return A logic value indicating if a working directory was defined.
+ */
+ public boolean hasWorkingDirectory() {
+ return workingDirectory != null;
+ }
+
+ /**
+ * Provides a textual representation of the current command.
+ * @return A string representing the current command.
+ */
+ @Override
+ public String toString() {
+ return CommonUtils.getCollectionElements(elements, "[ ", " ]", ", ");
+ }
+
+}