Method: Bcpm::Match.run_build_script

Defined in:
lib/bcpm/match.rb

.run_build_script(target_dir, build_file, log_file, target, run_live = false) ⇒ Object

Runs the battlecode Ant script.



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# File 'lib/bcpm/match.rb', line 195

def self.run_build_script(target_dir, build_file, log_file, target, run_live = false)
  if run_live
    Dir.chdir target_dir do
      command = Shellwords.shelljoin(['ant', '-noinput', '-buildfile',
                                      build_file, target])

      # Start the build as a subprocess, dump its output to the queue as
      # string fragments. nil means the subprocess completed.
      queue = Queue.new
      thread = Thread.start do
        IO.popen command do |f|
          begin
            loop { queue << f.readpartial(1024) }
          rescue EOFError
            queue << nil
          end
        end
      end

      build_output = ''
      while fragment = queue.pop
        # Dump the build output to the screen as the simulation happens.
        print fragment
        STDOUT.flush
        build_output << fragment
      
        # Let bcpm carry on when the simulation completes.
        break if build_output.index(run_live)
      end
      build_output << "\n" if build_output[-1] != ?\n
      
      # Pretend everything was put in a log file.
      File.open(log_file, 'wb') { |f| f.write build_output }
      return thread
    end
  else
    command = Shellwords.shelljoin(['ant', '-noinput', '-buildfile',
                                    build_file, '-logfile', log_file, target])
    if /mingw/ =~ RUBY_PLATFORM ||
        (/win/ =~ RUBY_PLATFORM && /darwin/ !~ RUBY_PLATFORM)
      Dir.chdir target_dir do
        output = Kernel.`(command)
        # If there is no log file, dump the output to the log.
        unless File.exist?(log_file)
          File.open(log_file, 'wb') { |f| f.write output }
        end
      end
    else
      pid = fork do
        Dir.chdir target_dir do
          output = Kernel.`(command)
          # If there is no log file, dump the output to the log.
          unless File.exist?(log_file)
            File.open(log_file, 'wb') { |f| f.write output }
          end
        end
      end
      Process.wait pid
    end
  end
end