Class: Warp::Dir::Commander

Inherits:
Object show all
Includes:
Singleton
Defined in:
lib/warp/dir/commander.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Commander

Returns a new instance of Commander.



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# File 'lib/warp/dir/commander.rb', line 13

def initialize
  @commands ||= Set.new # a pre-caution, normally it would already by defined by now
  @command_map   = {}
end

Instance Attribute Details

#command_map ⇒ Object

Returns the value of attribute command_map.



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# File 'lib/warp/dir/commander.rb', line 11

def command_map
  @command_map
end

#commands ⇒ Object (readonly)

Returns the value of attribute commands.



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# File 'lib/warp/dir/commander.rb', line 10

def commands
  @commands
end

Instance Method Details

#find(command_name) ⇒ Object 



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# File 'lib/warp/dir/commander.rb', line 32

def find(command_name)
  command = lookup(command_name)
  if command.nil?
    raise ::Warp::Dir::Errors::InvalidCommand.new(command_name)
  end
  command
end

#installed_commands ⇒ Object 



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# File 'lib/warp/dir/commander.rb', line 23

def installed_commands
  @commands.map(&:command_name)
end

#lookup(command_name) ⇒ Object 



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# File 'lib/warp/dir/commander.rb', line 27

def lookup(command_name)
  reindex!
  command_map[command_name]
end

#register(command) ⇒ Object 



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# File 'lib/warp/dir/commander.rb', line 18

def register(command)
  @commands << command if command
  self
end

#reindex! ⇒ Object 



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# File 'lib/warp/dir/commander.rb', line 46

def reindex!
  commands.each do |command|
    if command.respond_to?(:aliases)
      command.aliases.each do |an_alias|
        if self.command_map[an_alias] && !self.command_map[an_alias] == command
          raise Warp::Dir::Errors::InvalidCommand.new("Duplicate alias for command #{command}")
        end
        self.command_map[an_alias] = command
      end
    end
    self.command_map[command.command_name] = command
  end
  self
end

#run(command_name, *args) ⇒ Object

Raises:



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# File 'lib/warp/dir/commander.rb', line 40

def run(command_name, *args)
  cmd = find command_name
  raise ::Warp::Dir::Errors::InvalidCommand.new(command_name) unless cmd.is_a?(warp::Dir::Command)
  cmd.new(*args).run
end

#validate! ⇒ Object 



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# File 'lib/warp/dir/commander.rb', line 61

def validate!
  self.commands.delete_if do |subclass|
    if !subclass.respond_to?(:abstract_class?) && !subclass.method_defined?(:run)
      raise ::Warp::Dir::Errors::InvalidCommand.new(subclass)
    end
    subclass.respond_to?(:abstract_class?) || !subclass.method_defined?(:run)
  end
end