Module: Adhearsion::CLI::AhnCommand

Defined in:
lib/adhearsion/cli.rb

Defined Under Namespace

Modules: CommandHandler

Constant Summary collapse

USAGE = 
<<USAGE
Usage:
   ahn create /path/to/directory
   ahn start [daemon] [/path/to/directory]
   ahn version|-v|--v|-version|--version
   ahn help|-h|--h|--help|-help

   ahn  enable component COMPONENT_NAME
   ahn disable component COMPONENT_NAME
   ahn  create component COMPONENT_NAME
USAGE

Class Method Summary collapse

Class Method Details

.execute! ⇒ Object 



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# File 'lib/adhearsion/cli.rb', line 19

def 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 28

def 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 32

def 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