pollymc/libraries/launcher/org/polymc/utils/Utils.java

/*
 * Copyright 2012-2021 MultiMC Contributors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.polymc.utils;

import java.io.File;
import java.lang.reflect.Field;
import java.lang.reflect.Modifier;

public final class Utils {

    private Utils() {}

    /**
     * Finds a field that looks like a Minecraft base folder in a supplied class
     *
     * @param clazz the class to scan
     */
    public static Field getMinecraftBaseDirField(Class<?> clazz) {
        for (Field f : clazz.getDeclaredFields()) {
            // Has to be File
            if (f.getType() != File.class)
                continue;

            // And Private Static.
            if (!Modifier.isStatic(f.getModifiers()) || !Modifier.isPrivate(f.getModifiers()))
                continue;

            return f;
        }

        return null;
    }

}