Dodanie podstawowej opcji CL pomocy (-h)

Author: koder95

pom.xml

@@ -44,6 +44,11 @@
             <artifactId>gson</artifactId>
             <version>2.11.0</version>
         </dependency>
+        <dependency>
+            <groupId>commons-cli</groupId>
+            <artifactId>commons-cli</artifactId>
+            <version>1.9.0</version>
+        </dependency>
     </dependencies>
 
     <licenses>

src/main/java/pl/koder95/cmf/Main.java

@@ -1,5 +1,7 @@
 package pl.koder95.cmf;
 
+import org.apache.commons.cli.*;
+
 import java.util.Arrays;
 
 public class Main {
@@ -8,5 +10,18 @@ public static void main(String[] args) {
         System.out.println("Catholic Moveable Feasts by Kamil Jan Mularski [Koder95]. See more: https://koder95.pl/");
         System.out.println("—   It is starting with arguments: " + Arrays.deepToString(args));
         System.out.println();
+
+        Options options = new Options();
+        options.addOption("h", "help", false, "wyświetla pomoc programu");
+        CommandLineParser parser = new DefaultParser(false);
+        try {
+            CommandLine cl = parser.parse(options, args);
+            if (cl.hasOption("h")) {
+                HelpFormatter hf = new HelpFormatter();
+                hf.printHelp("cmf", options);
+            }
+        } catch (ParseException e) {
+            throw new RuntimeException(e);
+        }
     }
 }