gistfile1.rb

    # Runs maven if we are a JRuby process.  Currently not used.
    #
    # See http://watchitlater.com/blog/2011/08/jruby-rake-and-maven/
    def mvn(*args)
      mvn = catch(:mvn) do
        ENV['PATH'].split(::File::PATH_SEPARATOR).each do |path|
          Dir.glob(::File.join(path, 'mvn')).each do |file|
            if ::File.executable?(file)
              throw :mvn, if ::File.symlink?(file)
                            ::File.readlink(file)
                          else
                            file
                          end
            end
          end
        end
      end

      raise 'No maven found on $PATH' unless mvn
      
      mvn_home = ::File.expand_path(::File.join(mvn, '..', '..'))
      m2_conf = ::File.expand_path(::File.join(mvn_home, 'bin', 'm2.conf'))

      java.lang.System.setProperty('maven.home', mvn_home)
      java.lang.System.setProperty('classworlds.conf', m2_conf)

      Dir[::File.join(mvn_home, 'boot', '*.jar')].each do |jar|
        require jar
      end
      launcher = Java::org.codehaus.plexus.classworlds.launcher.Launcher
      exit_code = launcher.mainWithExitCode(args.flatten.to_java(:string))
      raise "Maven exited #{exit_code}" unless exit_code == 0
    end