Module: Ripl::Fresh

Defined in:
lib/ripl/fresh.rb,
lib/ripl/fresh/commands.rb

Defined Under Namespace

Modules: Commands

Constant Summary collapse

VERSION = 
'0.2.1'

Instance Method Summary collapse

Instance Method Details

#before_loop ⇒ Object 



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# File 'lib/ripl/fresh.rb', line 9

def before_loop
  @command_mode = :ruby
  @real_buffer  = nil
  super
  # register bond completion
  Ripl.config[:completion][:gems] ||= []
  Ripl.config[:completion][:gems] << 'ripl-fresh'
end

#get_input ⇒ Object

determine @command_mode



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# File 'lib/ripl/fresh.rb', line 19

def get_input
  command_line = super

  # This case statement decides the command mode,
  #  and which part of the input should be used for what...
  #  Note: Regexp match groups are used!
  @result_storage = @result_operator = nil

  @command_mode = case command_line
  # force ruby with a space
  when /^ /
    :ruby
  # regexp match shell commands
  when *Array( Ripl.config[:fresh_patterns] ).compact
    command_line     = $~[:command_line]     if $~.names.include? 'command_line'
    command          = $~[:command]          if $~.names.include? 'command'
    @result_operator = $~[:result_operator]  if $~.names.include? 'result_operator'
    @result_storage  = $~[:result_storage]   if $~.names.include? 'result_storage'
    forced           = !! $~[:force]         if $~.names.include? 'force'

    if forced
      :system
    elsif Ripl.config[:fresh_ruby_commands].include?( command )
      :ruby
    elsif Ripl.config[:fresh_mixed_commands].include?( command )
      :mixed
    elsif Ripl.config[:fresh_system_commands].include?( command )
      :system
    elsif Kernel.respond_to? command.to_sym
      :ruby
    else
      Ripl.config[:fresh_unknown_command_mode]
    end
  else
    Ripl.config[:fresh_default_mode]
  end

  command_line
end

#loop_eval(input) ⇒ Object

get result (depending on @command_mode)



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# File 'lib/ripl/fresh.rb', line 60

def loop_eval(input)
  if input == ''
    @command_mode = :system and return
  end

  case @command_mode
  when :system # generate ruby code to execute the command
    if !@result_storage
      ruby_command_code = "_ = system '#{ input }'\n"
    else
      temp_file = "/tmp/ripl-fresh_#{ rand 12345678901234567890 }"
      ruby_command_code = "_ = system '#{ input } 2>&1', :out => '#{ temp_file }'\n"
      
      # assign result to result storage variable
      case @result_operator
      when '=>', '=>>'
        result_literal   = "[]"
        formatted_result = "File.read('#{ temp_file }').split($/)"
        operator = @result_operator == '=>>' ? '+=' : '='
      when '~>', '~>>'
        result_literal = "''"
        formatted_result = "File.read('#{ temp_file }')"
        operator = @result_operator == '~>>' ? '<<' : '='
      end
      ruby_command_code << %Q%
        #{ @result_storage } ||= #{ result_literal }
        #{ @result_storage } #{ operator } #{ formatted_result }
        FileUtils.rm '#{ temp_file }'
      %
    end

    # ruby_command_code << "raise( SystemCallError.new $?.exitstatus ) if !_\n" # easy auto indent
    ruby_command_code << "if !_
                            raise( SystemCallError.new $?.exitstatus )
                          end;"
    
    super @input = ruby_command_code

  when :mixed # call the ruby method, but with shell style arguments TODO more shell like (e.g. "")
    method_name, *args = *input.split
    super @input = "#{ method_name }(*#{ args })"

  else # good old :ruby
    super
  end
end

#print_result(result) ⇒ Object

system commands don’t have output values and Ruby is displayed normally



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# File 'lib/ripl/fresh.rb', line 108

def print_result(result)
  if @error_raised ||
       @command_mode == :system ||
       @command_mode == :mixed && (!result || result == '')
    # don't display anything
  else
    super # puts(format_result(result))
  end
end