RegModInformation.java

/**
 * Copyright (c) Lambda Innovation, 2013-2015
 * 本作品版权由Lambda Innovation所有。
 * http://www.li-dev.cn/
 *
 * This project is open-source, and it is distributed under
 * the terms of GNU General Public License. You can modify
 * and distribute freely as long as you follow the license.
 * 本项目是一个开源项目，且遵循GNU通用公共授权协议。
 * 在遵照该协议的情况下，您可以自由传播和修改。
 * http://www.gnu.org/licenses/gpl.html
 */
package cn.annoreg.core;

import cn.annoreg.ARModContainer;
import cpw.mods.fml.common.Loader;
import cpw.mods.fml.common.Mod;
import cpw.mods.fml.common.ModContainer;

public class RegModInformation {
    
    private String modid;
    private String pkg, prefix, res;
    /**
     * Cached mod instance.
     */
    private Object mod;
    
    /**
     * Store class name before loading the mod class.
     */
    private String modClassName;
    
    private void loadModClass() {
        if (pkg == null) {
            Class<?> modClass;
            try {
                modClass = Class.forName(modClassName);
            } catch (ClassNotFoundException e) {
                e.printStackTrace();
                throw new RuntimeException("Can not get mod class.");
            }

            if (!modClass.isAnnotationPresent(RegistrationMod.class)) {
                //This should not happen.
                ARModContainer.log.error("Unable to create RegistryMod {}", modClass.getCanonicalName());
            }
            
            //Get mod information.
            RegistrationMod rm = modClass.getAnnotation(RegistrationMod.class);
            this.pkg = rm.pkg();
            this.prefix = rm.prefix();
            this.res = rm.res();
            modid = modClass.getAnnotation(Mod.class).modid();
        }
    }
    
    public RegModInformation(String className) {
        modClassName = className;
    }

    public String getPackage() {
        loadModClass();
        return pkg;
    }
    
    public String getPrefix() {
        loadModClass();
        return prefix;
    }
    
    public String getRes(String id) {
        loadModClass();
        return res + ":" + id;
    }
    
    public Object getModInstance() {
        loadModClass();
        if (mod != null) return mod;
        ModContainer mc = Loader.instance().getIndexedModList().get(modid);
        if (mc != null) {
            mod = mc.getMod();
            return mod;
        } else {
            return null;
        }
    }
    
    public String getModID() {
        loadModClass();
        return modid;
    }
}