Add CommandFramework module

CommandFramework/src/de/steamwar/command/PreviousArguments.java

@@ -0,0 +1,62 @@
+/*
+ * This file is a part of the SteamWar software.
+ *
+ * Copyright (C) 2022  SteamWar.de-Serverteam
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * 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 Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.steamwar.command;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Optional;
+
+public class PreviousArguments {
+
+    public final String[] userArgs;
+    public final Object[] mappedArgs;
+
+    public PreviousArguments(String[] userArgs, Object[] mappedArgs) {
+        this.userArgs = userArgs;
+        this.mappedArgs = mappedArgs;
+    }
+
+    public String getUserArg(int index) {
+        return userArgs[userArgs.length - index - 1];
+    }
+
+    public <T> T getMappedArg(int index) {
+        return (T) mappedArgs[mappedArgs.length - index - 1];
+    }
+
+    public <T> Optional<T> getFirst(Class<T> clazz) {
+        for (Object o : mappedArgs) {
+            if (clazz.isInstance(o)) {
+                return Optional.of((T) o);
+            }
+        }
+        return Optional.empty();
+    }
+
+    public <T> List<T> getAll(Class<T> clazz) {
+        List<T> list = new ArrayList<>();
+        for (Object o : mappedArgs) {
+            if (clazz.isInstance(o)) {
+                list.add((T) o);
+            }
+        }
+        return list;
+    }
+}