Class: Eggsh::Shell

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

Constant Summary collapse

SHELL_CMD =

mapping from shell commands to member function

{'cd' => :cd, 'pwd' => :pwd, 'fullpwd' => :full_pwd,
'quit' => :quit, 'exit' => :quit}
ALIAS =

alias hash for command alias

{'ls' => 'ls --color=auto'}

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Shell

Returns a new instance of Shell.



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# File 'lib/shell.rb', line 14

def initialize
  @env = ENV.to_hash
  @pwd = ENV['PWD']
  @translator = Eggsh::Translator.new
end

Instance Method Details

#exec(line) ⇒ Object

handling a single line



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# File 'lib/shell.rb', line 26

def exec line
  begin
    # alias first
    if line != '' && ALIAS.has_key?(line.split(' ')[0])
      splitted = line.split(' ')
      splitted[0] = ALIAS[splitted[0]]
      line = splitted.join ' '
    end

    if !line.empty? && SHELL_CMD.has_key?(line.split(' ')[0])
      msg = send(SHELL_CMD[line.split(' ')[0]], line)
      puts msg if msg
    elsif line.empty?
    else
      begin
        shell_line = @translator.translate(line)
        unless shell_line.empty?
          Kernel.spawn(@env, shell_line, :chdir => @pwd)
          Process.wait
        end
      rescue Exception => e
        puts e.display
      end
    end
  end
end

#prompt ⇒ Object

generating prompt



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# File 'lib/shell.rb', line 21

def prompt
  "#{pwd.to_color(:bold_green)}$ "
end