Class: RVC::Shell

Inherits:
Object
  • Object
show all
Defined in:
lib/rvc/shell.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(session) ⇒ Shell

Returns a new instance of Shell.



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# File 'lib/rvc/shell.rb', line 27

def initialize session
  @session = session
  @persist_ruby = false
  @fs = RVC::FS.new RVC::RootNode.new
  @ruby_evaluator = RubyEvaluator.new @fs
  @connections = {}
  @debug = false
end

Instance Attribute Details

#connections ⇒ Object (readonly)

Returns the value of attribute connections.



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# File 'lib/rvc/shell.rb', line 24

def connections
  @connections
end

#debug ⇒ Object

Returns the value of attribute debug.



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# File 'lib/rvc/shell.rb', line 25

def debug
  @debug
end

#fs ⇒ Object (readonly)

Returns the value of attribute fs.



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# File 'lib/rvc/shell.rb', line 24

def fs
  @fs
end

#session ⇒ Object (readonly)

Returns the value of attribute session.



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# File 'lib/rvc/shell.rb', line 24

def session
  @session
end

Instance Method Details

#delete_numeric_marks ⇒ Object 



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# File 'lib/rvc/shell.rb', line 184

def delete_numeric_marks
  @session.marks.grep(/^\d+$/).each { |x| @session.set_mark x, nil }
end

#eval_command(input) ⇒ Object 



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# File 'lib/rvc/shell.rb', line 79

def eval_command input
  cmd, *args = Shellwords.shellwords(input)
  return unless cmd
  RVC::Util.err "invalid command" unless cmd.is_a? String
  case cmd
  when RVC::FS::MARK_PATTERN
    CMD.basic.cd RVC::Util.lookup_single(cmd)
  else
    if cmd.include? '.'
      module_name, cmd, = cmd.split '.'
    elsif ALIASES.member? cmd
      module_name, cmd, = ALIASES[cmd].split '.'
    else
      RVC::Util.err "unknown alias #{cmd}"
    end

    m = MODULES[module_name] or RVC::Util.err("unknown module #{module_name}")

    opts_block = m.opts_for(cmd.to_sym)
    parser = RVC::OptionParser.new cmd, &opts_block

    begin
      args, opts = parser.parse args
    rescue Trollop::HelpNeeded
      parser.educate
      return
    end

    if parser.has_options?
      m.send cmd.to_sym, *(args + [opts])
    else
      m.send cmd.to_sym, *args
    end
  end
  nil
end

#eval_input(input) ⇒ Object 



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# File 'lib/rvc/shell.rb', line 36

def eval_input input
  if input == '//'
    @persist_ruby = !@persist_ruby
    return
  end

  if input[0..0] == '!'
    RVC::Util.system_fg input[1..-1]
    return
  end

  ruby = @persist_ruby
  if input =~ /^\//
    input = $'
    ruby = !ruby
  end

  begin
    if ruby
      eval_ruby input
    else
      eval_command input
    end
  rescue SystemExit, IOError
    raise
  rescue RVC::Util::UserError, RuntimeError, RbVmomi::Fault
    if ruby or debug
      puts "#{$!.class}: #{$!.message}"
      puts $!.backtrace * "\n"
    else
      case $!
      when RbVmomi::Fault, RVC::Util::UserError
        puts $!.message
      else
        puts "#{$!.class}: #{$!.message}"
      end
    end
  rescue Exception
    puts "#{$!.class}: #{$!.message}"
    puts $!.backtrace * "\n"
  end
end

#eval_ruby(input) ⇒ Object 



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# File 'lib/rvc/shell.rb', line 116

def eval_ruby input
  result = @ruby_evaluator.do_eval input
  if input =~ /\#$/
    introspect_object result
  else
    pp result
  end
  nil
end

#introspect_class(klass) ⇒ Object 



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# File 'lib/rvc/shell.rb', line 159

def introspect_class klass
  q = lambda { |x| x =~ /^xsd:/ ? $' : x }
  if klass < RbVmomi::VIM::DataObject
    puts "Data Object #{klass}"
    klass.full_props_desc.each do |desc|
      puts " #{desc['name']}: #{q[desc['wsdl_type']]}#{desc['is-array'] ? '[]' : ''}"
    end
  elsif klass < RbVmomi::VIM::ManagedObject
    puts "Managed Object #{klass}"
    puts
    puts "Properties:"
    klass.full_props_desc.each do |desc|
      puts " #{desc['name']}: #{q[desc['wsdl_type']]}#{desc['is-array'] ? '[]' : ''}"
    end
    puts
    puts "Methods:"
    klass.full_methods_desc.sort_by(&:first).each do |name,desc|
      params = desc['params']
      puts " #{name}(#{params.map { |x| "#{x['name']} : #{q[x['wsdl_type'] || 'void']}#{x['is-array'] ? '[]' : ''}" } * ', '}) : #{q[desc['result']['wsdl_type'] || 'void']}"
    end
  else
    puts klass
  end
end

#introspect_object(obj) ⇒ Object 



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# File 'lib/rvc/shell.rb', line 134

def introspect_object obj
  case obj
  when RbVmomi::VIM::DataObject, RbVmomi::VIM::ManagedObject
    introspect_class obj.class
  when Array
    klasses = obj.map(&:class).uniq
    if klasses.size == 0
      puts "Array"
    elsif klasses.size == 1
      $stdout.write "Array of "
      introspect_class klasses[0]
    else
      counts = Hash.new 0
      obj.each { |o| counts[o.class] += 1 }
      puts "Array of:"
      counts.each { |k,c| puts "  #{k}: #{c}" }
      puts
      $stdout.write "Common ancestor: "
      introspect_class klasses.map(&:ancestors).inject(&:&)[0]
    end
  else
    puts obj.class
  end
end

#prompt ⇒ Object 



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# File 'lib/rvc/shell.rb', line 126

def prompt
  if false
    "#{@fs.display_path}#{$terminal.color(@persist_ruby ? '~' : '>', :yellow)} "
  else
    "#{@fs.display_path}#{@persist_ruby ? '~' : '>'} "
  end
end