Class: Ppl::Command::Help

Inherits:
Application::Command show all
Defined in:
lib/ppl/command/help.rb

Instance Attribute Summary collapse

Attributes inherited from Application::Command

#description, #name, #storage

Instance Method Summary collapse

Methods inherited from Application::Command

#options

Constructor Details

#initialize ⇒ Help

Returns a new instance of Help.



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# File 'lib/ppl/command/help.rb', line 6

def initialize
  @name        = "help"
  @description = "Show a list of commands"
end

Instance Attribute Details

#command_suite ⇒ Object

Returns the value of attribute command_suite.



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# File 'lib/ppl/command/help.rb', line 4

def command_suite
  @command_suite
end

Instance Method Details

#execute(input, output) ⇒ Object 



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# File 'lib/ppl/command/help.rb', line 11

def execute(input, output)
  @command_suite.sort_by_name
  max_name_length = 0

  @command_suite.each do |command|
    name_length = command.name.length
    if name_length > max_name_length
      max_name_length = name_length
    end
  end

  output.line("usage: ppl <command>")
  output.line(nil)

  @command_suite.each do |command|
    name        = command.name
    description = command.description

    if @name == name
      next
    end

    line = sprintf("   %-#{max_name_length}s   %s", name, description)

    output.line(line)
  end

  output.line(nil)
  return true
end