process distribution name

src/main/java/fr/packageviewer/ArgParse.java

@@ -31,6 +31,7 @@ public class ArgParse {
             if(params.help) {
                 jCommander.setProgramName("PackageViewer");
                 jCommander.usage();
+                System.exit(0);
             } else {
                 // store the argument parsed in the variable
                 packet = params.packet;

src/main/java/fr/packageviewer/Main.java

@@ -1,11 +1,53 @@
 package fr.packageviewer;
 
+import java.util.HashMap;
+import java.util.Map;
+import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.Future;
+
+import fr.packageviewer.distribution.ArchDistribution;
+import fr.packageviewer.pack.Package;
+
 public class Main {
 
+	/**
+	 * Check if the given distribution is supported
+	 * @param distribution distribution name
+	 * @return the distribution wanted if found, or null if there is none, or stop the program if it is not supported
+	 * @author Capelier-Marla
+	 */
+	private static String processDistribution(String distribution) {
+		// check if the user asked a distribution
+		if(distribution == null || distribution.length() == 0) {
+			return null;
+		}
+		// create a map with the distribution names
+		Map<String, String> distributionMap = new HashMap<String, String>();
+		distributionMap.put("ARCH", "archlinux");
+		distributionMap.put("ARCHLINUX", "archlinux");
+		distributionMap.put("FEDORA", "fedora");
+		distribution = distribution.toUpperCase();
+
+		// check if we support the distribtion
+		if(distributionMap.containsKey(distribution)) {
+			// give the distribution name
+			return distributionMap.get(distribution);
+		} else {
+			// stop the program as the user want a non-supported distribution
+			System.out.println("Cette ditribution n'a pas été trouvée");
+			System.exit(0);
+			return null;
+		}
+	}
+
 	public static void main(String[] args) {
 		// send the command line arguments to the parser
 		ArgParse.parseArguments(args);
-		System.out.println(ArgParse.getPacket());
-		System.out.println(ArgParse.getDistribution());
+		String packet = ArgParse.getPacket();
+		String distribution = ArgParse.getDistribution();
+
+		System.out.println(packet);
+		distribution = processDistribution(distribution);
+		System.out.println(distribution);
 	}
 }