build.gradle.kts

@@ -12,10 +12,6 @@ repositories {
     mavenCentral()
 }
 
-dependencies {
-    implementation(group="commons-cli", name="commons-cli", version="1.5.0")
-}
-
 fun versionBanner(): String {
     val os = ByteArrayOutputStream()
     val devNull = OutputStream.nullOutputStream()
@@ -40,8 +36,8 @@ tasks.jar {
         attributes(
             "Implementation-Title" to project.name,
             "Implementation-Version" to project.version,
-            "Main-Class" to "de.jotoho.waituntil.Main"
+            "Main-Class" to "de.jotoho.waituntil.Main",
-            //"Main-Module" to "de.jotoho.waituntil.main"
+            "Main-Module" to "de.jotoho.waituntil.main"
         )
     }
 }
@@ -49,5 +45,5 @@ tasks.jar {
 application {
     // Define the main class for the application.
     mainClass.set("de.jotoho.waituntil.Main")
-    //mainModule.set("de.jotoho.waituntil.main")
+    mainModule.set("de.jotoho.waituntil.main")
 }

src/main/java/de/jotoho/waituntil/AppOptions.java

@@ -1,23 +0,0 @@
-package de.jotoho.waituntil;
-
-import org.apache.commons.cli.Option;
-import org.apache.commons.cli.Options;
-
-final class AppOptions {
-    // Disable Instance Creation
-    private AppOptions() {}
-
-    public final static Option help =
-        Option.builder().argName("h").longOpt("help").desc("Shows this help " +
-            "message and exits").build();
-    public final static Option version =
-        Option.builder().argName("v").longOpt("version").desc("Shows version information and exits").build();
-
-    private final static Options options = new Options()
-                                            .addOption(help)
-                                            .addOption(version);
-
-    public static Options getOptions() {
-        return options;
-    }
-}

src/main/java/de/jotoho/waituntil/Main.java

@@ -18,8 +18,8 @@ package de.jotoho.waituntil;
     along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
-import org.apache.commons.cli.DefaultParser;
+import java.util.HashSet;
-import org.apache.commons.cli.ParseException;
+import java.util.Map;
 
 import static de.jotoho.waituntil.GlobalConf.applicationOutputLanguage;
 
@@ -28,10 +28,35 @@ import static de.jotoho.waituntil.GlobalConf.applicationOutputLanguage;
 // Author: Jonas Tobias Hopusch (@jotoho)
 
 public final class Main {
+    public static void main(final String[] args) {
+        final var optionDictionary = Map.of("-h", "--help", "-v", "--version");
 
-    private static void printVersionInformation() {
+        final var options = new HashSet<String>();
+        final var words = new HashSet<String>();
+
+        for (final String arg : args) {
+            if (arg.startsWith("--")) {
+                options.add(arg.substring(2));
+            } else if (arg.startsWith("-")) {
+                if (optionDictionary.containsKey(arg))
+                    options.add(optionDictionary.get(arg).substring(2));
+                else
+                    System.err.println("Short-hand '$arg' does not exist. Ignoring!");
+            } else {
+                words.add(arg);
+            }
+        }
+
+        if (options.contains("help")) {
+            switch (applicationOutputLanguage) {
+                case GlobalConf.langGerman -> System.out.println("Hilfe kommt noch. (Nicht implementiert)");
+                default -> System.out.println("Help is yet to come. (Not implemented)");
+            }
+        } else if (options.contains("version")) {
             final var thisPackage = Main.class.getPackage();
-        final var appVersion = thisPackage.getImplementationVersion() != null ? thisPackage.getImplementationVersion() : "version unknown";
+            final var appVersion = thisPackage.getImplementationVersion() != null
+                    ? thisPackage.getImplementationVersion()
+                    : "version unknown";
             System.out.println("waituntil " + appVersion);
             System.out.println("""
 
@@ -42,53 +67,14 @@ public final class Main {
                     This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
                     without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
                     See the GNU General Public License for more details.""");
-    }
+        } else if (words.size() == 1) {
-
+            final var target = TimeCalculator.calculateAndAnnounceTargetTime(words.iterator().next());
-    private static void printHelpInformation() {
-        switch (applicationOutputLanguage) {
-            case GlobalConf.langGerman -> System.out.println("Hilfe kommt noch. (Nicht implementiert)");
-            default -> System.out.println("Help is yet to come. (Not implemented)");
-        }
-    }
-
-    public static void main(final String[] args) {
-        try {
-            final var parsedArguments =
-                DefaultParser.builder()
-                    .setStripLeadingAndTrailingQuotes(true)
-                    .build()
-                    .parse(AppOptions.getOptions(), args);
-
-            final var userData = parsedArguments.getArgs();
-
-            if (parsedArguments.hasOption(AppOptions.help)) {
-                printHelpInformation();
-            } else if (parsedArguments.hasOption(AppOptions.version)) {
-                printVersionInformation();
-            } else if (userData.length == 0) {
-                switch (applicationOutputLanguage) {
-                    case GlobalConf.langGerman -> System.err.println("FATAL: " +
-                        "Es wurde keine Uhrzeit angegeben.");
-                    default -> System.err.println("FATAL: No target time was " +
-                        "provided.");
-                }
-                System.exit(1);
-            } else if (userData.length > 1) {
-                switch (applicationOutputLanguage) {
-                    case GlobalConf.langGerman -> System.err.println("FATAL: " +
-                        "Zu viele Argumente wurden angegeben.");
-                    default -> System.err.println("FATAL: Too many arguments " +
-                        "provided.");
-                }
-                System.exit(1);
-            } else {
-                final var target =
-                    TimeCalculator.calculateAndAnnounceTargetTime(userData[0]);
             Sleep.waitUntilTimeStamp(target);
+        } else {
+            switch (applicationOutputLanguage) {
+                case GlobalConf.langGerman -> System.err.println("FATAL: Es wurde exact ein nicht-flag Argument erwartet. (" + words.size() + " erhalten)");
+                default -> System.err.println("FATAL: Expected one non-flag argument. (Got " + words.size() + ")");
             }
-        } catch (final ParseException e) {
-            System.getLogger("main").log(System.Logger.Level.ERROR, "Parsing " +
-                "of arguments failed and the program cannot continue.", e);
             System.exit(1);
         }
     }

src/main/java/module-info.java

@@ -0,0 +1,2 @@
+module de.jotoho.waituntil.main {
+}