ModLister.java

package vazkii.modlister;

import java.io.BufferedWriter;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;

import org.lwjgl.Sys;
import org.lwjgl.opengl.Display;

import cpw.mods.fml.common.FMLLog;
import cpw.mods.fml.common.Loader;
import cpw.mods.fml.common.Mod;
import cpw.mods.fml.common.Mod.EventHandler;
import cpw.mods.fml.common.ModContainer;
import cpw.mods.fml.common.event.FMLPostInitializationEvent;
import cpw.mods.fml.common.event.FMLPreInitializationEvent;

@Mod(modid = ModLister.MOD_ID, name = ModLister.MOD_NAME, version = ModLister.VERSION, dependencies = ModLister.DEPENDENCIES)
public final class ModLister {

	public static final String MOD_ID = "ModLister";
	public static final String MOD_NAME = "Mod Lister";
	public static final String VERSION = "1.0";
	public static final String DEPENDENCIES = "after:*";
	
	File mcDir;
	
	@EventHandler
	public void preInit(FMLPreInitializationEvent event) {
		mcDir = event.getModConfigurationDirectory().getParentFile();
	}
	
	@EventHandler
	public void postInit(FMLPostInitializationEvent event) {
		List<String> lines = new ArrayList<String>();
		for(ModContainer mod : Loader.instance().getModList())
			lines.add(createLine(mod));

		try {
			File file = new File(mcDir, "ModList.txt");
			BufferedWriter writer = new BufferedWriter(new FileWriter(file));
			
			for(String s : lines)
				writer.write(s);
			
			writer.write("\r");
			writer.write("Mod List generated by ModLister.\r");
			writer.write("System Time: " + new SimpleDateFormat("HH:mm MM/dd/yyyy").format(new Date()) + "\r");
			writer.write("Minecraft " + Display.getTitle().replaceAll("Minecraft ", "") + "\r");
			writer.write("OS: " + System.getProperty("os.name") + "\r");
			writer.write("Java: " + System.getProperty("java.version") + "\r");
			writer.write("LWJGL: " + Sys.getVersion());
			
			writer.close();
			
			if(!file.exists())
				file.createNewFile();
			
			FMLLog.warning("ModLister wrote mod data properly.");
		} catch(IOException e) {
			FMLLog.warning("ModLister failed to write mod data!");
			e.printStackTrace();
		}
	}
	
	private String createLine(ModContainer container) {
		StringBuilder builder = new StringBuilder();
		builder.append(container.getName());
		builder.append(" (");
		builder.append(container.getModId());
		builder.append(") |  Version: ");
		builder.append(container.getVersion());
		builder.append(" | Loaded From ");
		builder.append(container.getSource().getName());
		builder.append(" on ");
		builder.append(container.getSource() == null || container.getSource().getParentFile() == null ? "N/A" : container.getSource().getParentFile().getName());
		builder.append(" | Website: ");
		builder.append(container.getMetadata().url.isEmpty() ? "N/A" : container.getMetadata().url);
		builder.append("\r");
		
		return builder.toString();
	}
}