JarBootstrapMain.java

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 * Copyright (C) 2010 Charles O Nutter <headius@headius.com>
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package org.jruby;

/**
 * A specialized "main" entry point that assumes it will run a specific file
 * (jar-bootstrap.rb) when launching. This allows modifying only the manifest's
 * Main-Class and adding this file to create a self-contained executable JRuby
 * application.
 *
 * Example usage:
 *
 * <pre>
 * ~/projects/jruby $ cp lib/jruby.jar myapp.jar
 *
 * ~/projects/jruby $ cat jar-bootstrap.rb
 * puts "hello"
 *
 * ~/projects/jruby $ jar ufe myapp.jar org.jruby.JarBootstrapMain jar-bootstrap.rb
 *
 * ~/projects/jruby $ java -jar myapp.jar
 * hello
 * </pre>
 */
public class JarBootstrapMain {
    public static final String JAR_BOOTSTRAP = "classpath:jar-bootstrap.rb";
    public static void main(String[] args) {
        String[] newArgs = new String[args.length + 1];
        newArgs[0] = JAR_BOOTSTRAP;
        System.arraycopy(args, 0, newArgs, 1, args.length);
        Main.main(newArgs);
    }
}