Class: Debugger::RestartCommand

Inherits:
Command
  • Object
show all
Defined in:
lib/ruby-debug/commands/control.rb

Overview

:nodoc:

Constant Summary

Constants inherited from Command

Command::DEF_OPTIONS

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from Command

commands, #find, inherited, #initialize, load_commands, #match, method_missing, options, register_setting_get, register_setting_set, register_setting_var, settings, settings_map

Constructor Details

This class inherits a constructor from Debugger::Command

Class Method Details

.help(cmd) ⇒ Object 



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# File 'lib/ruby-debug/commands/control.rb', line 68

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

.help_command ⇒ Object 



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# File 'lib/ruby-debug/commands/control.rb', line 64

def help_command
  'restart'
end

Instance Method Details

#execute ⇒ Object 



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# File 'lib/ruby-debug/commands/control.rb', line 13

def execute
  if not defined? Debugger::PROG_SCRIPT
    errmsg "Don't know name of debugged program\n"
    return
  end
  prog_script = Debugger::PROG_SCRIPT
  if not defined? Debugger::RDEBUG_SCRIPT
    # FIXME? Should ask for confirmation? 
    print "Debugger was not called from the outset...\n"
    rdebug_script = prog_script
  else 
    rdebug_script = Debugger::RDEBUG_SCRIPT
  end
  begin
    Dir.chdir(Debugger::INITIAL_DIR)
  rescue
    print "Failed to change initial directory #{Debugger::INITIAL_DIR}"
  end
  if not File.exist?(File.expand_path(prog_script))
    errmsg "Ruby program #{prog_script} doesn't exist\n"
    return
  end
  if not File.executable?(prog_script) and rdebug_script == prog_script
    print "Ruby program #{prog_script} doesn't seem to be executable...\n"
    print "We'll add a call to Ruby.\n"
    ruby = begin defined?(Gem) ? Gem.ruby : "ruby" rescue "ruby" end
    rdebug_script = "#{ruby} -I#{$:.join(' -I')} #{prog_script}"
  else
    rdebug_script += ' '
  end
  if @match[1]
    argv = [prog_script] + @match[1].split(/[ \t]+/)
  else
    if not defined? Command.settings[:argv]
      errmsg "Arguments have not been set. Use 'set args' to set them.\n"
      return
    else
      argv = Command.settings[:argv]
    end
  end
  args = argv.join(' ')

  # An execv would be preferable to the "exec" below.
  cmd = rdebug_script + args
  print "Re exec'ing:\n\t#{cmd}\n"
  exec cmd
rescue Errno::EOPNOTSUPP
  print "Restart command is not available at this time.\n"
end

#regexp ⇒ Object 



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# File 'lib/ruby-debug/commands/control.rb', line 5

def regexp
  / ^\s*
  (?:restart|R)
  (?:\s+ (\S?.*\S))? \s*
  $
  /ix
end