refactoring: Cli-Parser

cli-parser/src/main/java/mc/cliparser/CommandLineParser.java

@@ -0,0 +1,52 @@
+package mc.cliparser;
+
+import java.util.HashSet;
+import java.util.Set;
+import java.util.concurrent.atomic.AtomicReference;
+
+public class CommandLineParser {
+
+	private final Set<Option> options = new HashSet<>();
+
+	public void addOption(Option option) {
+		options.add(option);
+	}
+
+	public CommandLine parse(String[] args) {
+
+		Set<Option> foundOptions = new HashSet<>();
+		AtomicReference<Option> refCurrentOption = new AtomicReference<>(null);
+
+		for (String arg : args) {
+			if (refCurrentOption.get() != null) {
+				refCurrentOption.get().value(arg);
+				foundOptions.add(refCurrentOption.get());
+				refCurrentOption.set(null);
+			} else {
+				parseOptArgs(arg, foundOptions, refCurrentOption);
+			}
+		}
+
+		return new CommandLine(foundOptions);
+	}
+
+	@SuppressWarnings("java:S125")
+	private void parseOptArgs(String arg, Set<Option> foundOptions, AtomicReference<Option> refCurrentOption) {
+		String optName;
+		if (arg.startsWith("--")) {
+			optName = arg.substring(2);
+		} else /*if (args[i].startsWith("-"))*/ {
+			optName = arg.substring(1);
+		}
+
+		for (Option option : options) {
+			if (optName.equals(option.shortName()) || optName.equals(option.longName())) {
+				if (option.hasArgs()) {
+					refCurrentOption.set(option);
+				} else {
+					foundOptions.add(option);
+				}
+			}
+		}
+	}
+}