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package moe.nea.modernjava.launch.relaunch;
import moe.nea.modernjava.launch.util.PropertyNames;
import moe.nea.modernjava.launch.util.TextIoUtils;
import moe.nea.modernjava.launch.util.WellKnownBlackboard;
import net.minecraftforge.fml.common.launcher.FMLTweaker;
import net.minecraftforge.fml.nea.moe.modernjava.IAMFML;
import java.io.File;
import java.io.IOException;
import java.lang.management.ManagementFactory;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
public class FCPRelauncher {
/**
* @return the original arguments, as passed to the main method.
*/
public static List<String> getOriginalArguments() {
List<String> originalArgs = new ArrayList<>();
// Provided by FML
// This is highly processed so there might be some arguments that become lost, but almost everything should be in here.
// Namely non -- arguments get lost. I don't know any of these arguments that the vanilla launcher uses, so it should be fine?
// Also, some tweakers are missing. But we can fix this.
Map<String, String> launchArgs = WellKnownBlackboard.launchArgs();
if ("UnknownFMLProfile".equals(launchArgs.get("--version"))) {
launchArgs.remove("--version");
}
for (Map.Entry<String, String> argument : launchArgs.entrySet()) {
originalArgs.add(argument.getKey());
originalArgs.add(argument.getValue());
}
originalArgs.add("--tweakClass");
originalArgs.add(FMLTweaker.class.getName());
System.out.println("Reconstructed original minecraft arguments: " + originalArgs);
return originalArgs;
}
public static File findJavaLauncher() {
return new File("/home/nea/.sdkman/candidates/java/16.0.2-tem/bin/java")
}
public static void relaunch() {
List<String> originalArgs = getOriginalArguments();
File modernJavaPath = findJavaLauncher();
File agentFile;
agentFile = new File("/home/nea/src/ModernJavaLauncher/target/build/libs/target.jar");
System.out.println("Located modern minecraft at: " + modernJavaPath);
ProcessBuilder processBuilder = new ProcessBuilder();
processBuilder.inheritIO();
processBuilder.directory(null);
List<String> moduleOpens = new ArrayList<>();
moduleOpens.add("java.base/java.util=ALL-UNNAMED");
moduleOpens.add("java.base/jdk.internal.loader=ALL-UNNAMED");
moduleOpens.add("java.base/java.lang.reflect=ALL-UNNAMED");
List<String> fullCommandLine = new ArrayList<>();
fullCommandLine.add(modernJavaPath.getAbsolutePath());
fullCommandLine.addAll(ManagementFactory.getRuntimeMXBean().getInputArguments());
fullCommandLine.add("-D" + PropertyNames.HAS_RELAUNCHED + "=true");
fullCommandLine.add("-D" + PropertyNames.RELAUNCH_CLASSPATH + "=" + agentFile.getAbsolutePath() + File.pathSeparator + ManagementFactory.getRuntimeMXBean().getClassPath());
fullCommandLine.add("--illegal-access=permit");
for (String open : moduleOpens) {
fullCommandLine.add("--add-opens");
fullCommandLine.add(open);
}
if (System.getProperty(PropertyNames.DEBUG_PORT) != null)
fullCommandLine.add("-agentlib:jdwp=transport=dt_socket,server=y,suspend=y,address=*:" + System.getProperty(PropertyNames.DEBUG_PORT));
fullCommandLine.add("-javaagent:" + agentFile);
fullCommandLine.add("--add-modules=ALL-MODULE-PATH,ALL-SYSTEM,ALL-DEFAULT,java.sql");
fullCommandLine.add("-Xbootclasspath/a:" + agentFile);
fullCommandLine.add("moe.nea.modernjava.target.RelaunchEntryPoint");
fullCommandLine.addAll(originalArgs);
System.out.println("Full relaunch commandline: " + fullCommandLine);
processBuilder.command(fullCommandLine);
int exitCode;
try {
try {
Process process = processBuilder.start();
exitCode = process.waitFor();
} finally {
TextIoUtils.flushStdIO();
}
} catch (IOException | InterruptedException e) {
throw new RuntimeException("Failed to relaunch with old java version", e);
}
System.out.println("Exiting outer relaunch layer");
IAMFML.shutdown(exitCode);
}
}
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