Module: Adhearsion::CLI::AhnCommand

Defined in:
lib/adhearsion/cli.rb

Defined Under Namespace

Modules: CommandHandler

Constant Summary collapse

USAGE = 
"Usage:\n   ahn create /path/to/directory\n   ahn start [daemon] [/path/to/directory]\n   ahn version|-v|--v|-version|--version\n   ahn help|-h|--h|--help|-help\n   \n   ahn  enable component COMPONENT_NAME\n   ahn disable component COMPONENT_NAME\n   ahn  create component COMPONENT_NAME\n"

Class Method Summary collapse

Class Method Details

.execute! ⇒ Object 



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# File 'lib/adhearsion/cli.rb', line 18

def self.execute!
  CommandHandler.send(*parse_arguments)
rescue CommandHandler::CLIException => error
  fail_and_print_usage error
end

.fail_and_print_usage(error) ⇒ Object

Provides a small abstraction of Kernel::abort().



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# File 'lib/adhearsion/cli.rb', line 27

def self.fail_and_print_usage(error)
  Kernel.abort "#{error.message}\n\n#{USAGE}"
end

.parse_arguments(args = ARGV.clone) ⇒ Object 



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# File 'lib/adhearsion/cli.rb', line 31

def self.parse_arguments(args=ARGV.clone)
  action = args.shift
  case action
    when /^-?-?h(elp)?$/, nil   then [:help]
    when /^-?-?v(ersion)?$/     then [:version]
    when "create"
      [:create, *args]
    when 'start'
      pid_file_regexp = /^--pid-file=(.+)$/
      if args.size > 3
        fail_and_print_usage "Too many arguments supplied!" if args.size > 3
      elsif args.size == 3
        fail_and_print_usage "Unrecognized final argument #{args.last}" unless args.last =~ pid_file_regexp
        pid_file = args.pop[pid_file_regexp, 1]
      else
        pid_file = nil
      end
      
      if args.first == 'daemon' && args.size == 2
        path   = args.last
        daemon = true
      elsif args.size == 1
        path, daemon = args.first, false
      else
        fail_and_print_usage "Invalid format for the start CLI command!"
      end
      [:start, path, daemon, pid_file]
    when '-'
      [:start, Dir.pwd]
    when "enable", "disable"
      if args.size == 1
        raise CommandHandler::UnknownCommand, "Must supply an argument for what you wish to #{action}"
      elsif args.size == 2
        [action, *args]
      else
        raise CommandHandler::UnknownCommand, "Too many arguments supplied!"
      end
    else
      [action, *args]
  end
end