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package moe.nea.modernjava.target;
import java.io.File;
import java.lang.reflect.Method;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLClassLoader;
import java.util.Arrays;
public class RelaunchEntryPoint {
public static void log(String text) {
System.out.println("[MODERNJAVA] " + text);
}
public static void main(String[] args) {
log("This is modern java relaunch talking!");
try {
setupLaunch(args);
} catch (Throwable t) {
log("Encountered exception during relaunching");
t.printStackTrace();
}
}
private static void setupLaunch(String[] args) throws Exception {
log("Original SQLException: " + Thread.currentThread().getContextClassLoader().loadClass("java.sql.SQLException"));
log("Setting up fake launch class loader");
ClassLoader urlClassLoader = new URLClassLoader(retrieveClassPath(), Thread.currentThread().getContextClassLoader());
log("Created fake url class loader");
Thread.currentThread().setContextClassLoader(urlClassLoader);
log("Handing off to Launch");
Class<?> launchClass = urlClassLoader.loadClass("net.minecraft.launchwrapper.Launch");
log("LaunchClass: " + launchClass);
log("LaunchClass ClassLoader: " + launchClass.getClassLoader());
log("LaunchClass ClassLoader SQLException: " + urlClassLoader.loadClass("java.sql.SQLException"));
Method main = launchClass.getMethod("main", String[].class);
main.invoke(null, new Object[]{args});
}
private static URL[] retrieveClassPath() throws MalformedURLException {
String property = System.getProperty("modernjava.relaunchclasspath");
String[] split = property.split(File.pathSeparator);
URL[] urls = new URL[split.length];
for (int i = 0; i < split.length; i++) {
urls[i] = new File(split[i]).toURI().toURL();
}
log("Retrieved classpath: " + Arrays.toString(urls));
return urls;
}
}
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