class Byebug::RestartCommand

def description
  %(restart|R [args]
    Restart the program. This is a re-exec - all byebug state
    is lost. If command arguments are passed those are used.)
end

def execute
  prog = Byebug.debugged_program
  if defined?(BYEBUG_SCRIPT)
    cmd = "#{BYEBUG_SCRIPT} #{prog}"
  else
    puts 'Byebug was not called from the outset...'
    if File.executable?(prog)
      cmd = prog
    else
      puts "Program #{prog} not executable... Wrapping it in a ruby call"
      cmd = "ruby -rbyebug -I#{$LOAD_PATH.join(' -I')} #{prog}"
    end
  end
  if @match[:args]
    cmd += " #{@match[:args]}"
  else
    require 'shellwords'
    cmd += " #{ARGV.compact.shelljoin}"
  end
  # An execv would be preferable to the "exec" below.
  puts "Re exec'ing:\n\t#{cmd}"
  exec cmd
rescue Errno::EOPNOTSUPP
  puts 'Restart command is not available at this time.'
end

def names
  %w(restart)
end

def regexp
  /^\s* (?:restart|R) (?:\s+(?<args>.+))? \s*$/x
end