Class: Mercenary::Program

Inherits:
Command
  • Object
show all
Defined in:
lib/mercenary/program.rb

Instance Attribute Summary collapse

Attributes inherited from Command

#actions, #aliases, #commands, #description, #map, #name, #options, #parent, #syntax, #trace

Instance Method Summary collapse

Methods inherited from Command

#action, #add_default_options, #alias, #command, #default_command, #execute, #full_name, #has_command?, #ident, #identity, #logger, #names_and_aliases, #option, #process_options, #summarize, #to_s, #version

Constructor Details

#initialize(name) ⇒ Program

Public: Creates a new Program

name - the name of the program

Returns nothing



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# File 'lib/mercenary/program.rb', line 13

def initialize(name)
  @config = {}
  super(name)
end

Instance Attribute Details

#config ⇒ Object (readonly)

Returns the value of attribute config.



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# File 'lib/mercenary/program.rb', line 6

def config
  @config
end

#optparse ⇒ Object (readonly)

Returns the value of attribute optparse.



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# File 'lib/mercenary/program.rb', line 5

def optparse
  @optparse
end

Instance Method Details

#go(argv) ⇒ Object

Public: Run the program

argv - an array of string args (usually ARGV)

Returns nothing



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# File 'lib/mercenary/program.rb', line 23

def go(argv)
  if argv.empty?
    default_command.execute
    abort
  end

  logger.debug("Using args passed in: #{argv.inspect}")

  cmd = nil

  @optparse = OptionParser.new do |opts|
    cmd = super(argv, opts, @config)
  end

  if cmd.actions.compact.empty?
    logger.error 'Invalid command.'
    abort
  end

  begin
    @optparse.parse!(argv)
  rescue OptionParser::InvalidOption => e
    logger.error "Whoops, we can't understand your command."
    logger.error e.message.to_s
    logger.error "Run your command again with the --help switch to see available options."
    abort
  end

  logger.debug("Parsed config: #{@config.inspect}")

  begin
    cmd.execute(argv, @config)
  rescue => e
    if cmd.trace
      raise e
    else
      logger.error e.message
      abort
    end
  end
end