Fixes #3666 - Add version command to CLI (#3670)

cli/pom.xml

@@ -10,4 +10,15 @@
     <artifactId>piranha-cli</artifactId>
     <packaging>jar</packaging>
     <name>Piranha - CLI</name>
+    <build>
+        <resources>
+            <resource>
+                <directory>src/main/resources</directory>
+                <filtering>true</filtering>
+                <includes>
+                    <include>VERSION</include>
+                </includes>
+            </resource>
+        </resources>
+    </build>
 </project>

cli/src/main/java/cloud/piranha/cli/Cli.java

@@ -54,8 +54,13 @@ public static void main(String[] arguments) {
      * Run method.
      */
     public void run() {
-        if (arguments.length == 0 || arguments[0].equals("help")) {
+        if (arguments.length == 0) {
             usage();
+        } else {
+            switch (arguments[0]) {
+                case "help" -> usage();
+                case "version" -> new VersionCommand(arguments).run();
+            }
         }
     }
 

cli/src/main/java/cloud/piranha/cli/VersionCommand.java

@@ -0,0 +1,69 @@
+/*
+ * Copyright (c) 2002-2024 Manorrock.com. 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 copyright holder 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 cloud.piranha.cli;
+
+import java.io.IOException;
+import java.net.URISyntaxException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+
+/**
+ * The version command.
+ *
+ * @author Manfred Riem (mriem@manorrock.com)
+ */
+public class VersionCommand implements Runnable {
+
+    /**
+     * Stores the arguments.
+     */
+    private final String[] arguments;
+
+    /**
+     * Constructor.
+     *
+     * @param arguments the arguments.
+     */
+    public VersionCommand(String[] arguments) {
+        this.arguments = arguments;
+    }
+
+    /**
+     * Run the command.
+     */
+    @Override
+    public void run() {
+        try {
+            String version = Files.readAllLines(
+                    Path.of(getClass().getResource("/VERSION").toURI())).get(0);
+            System.out.println(version);
+        } catch (IOException | URISyntaxException e) {
+            System.out.println(e.getMessage());
+        }
+    }
+}

cli/src/main/resources/VERSION

@@ -0,0 +1 @@
+${pom.version}