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require 'active_support/core_ext/object/inclusion'

ARGV << '--help' if ARGV.empty?

aliases = {
  "g" => "generate",
  "d" => "destroy",
  "c" => "console",
  "s" => "server",
  "db" => "dbconsole",
  "r" => "runner"
}

command = ARGV.shift
command = aliases[command] || command

case command
when 'generate', 'destroy', 'plugin'
  require 'rails/generators'

  if command == 'plugin' && ARGV.first == 'new'
    require "rails/commands/plugin_new"
  else
    require APP_PATH
    Rails.application.require_environment!

    Rails.application.load_generators

    require "rails/commands/#{command}"
  end

when 'benchmarker', 'profiler'
  require APP_PATH
  Rails.application.require_environment!
  require "rails/commands/#{command}"

when 'console'
  require 'rails/commands/console'
  require APP_PATH
  Rails.application.require_environment!
  Rails::Console.start(Rails.application)

when 'server'
  # Change to the application's path if there is no config.ru file in current dir.
  # This allows us to run script/rails server from other directories, but still get
  # the main config.ru and properly set the tmp directory.
  Dir.chdir(File.expand_path('../../', APP_PATH)) unless File.exists?(File.expand_path("config.ru"))

  require 'rails/commands/server'
  Rails::Server.new.tap { |server|
    # We need to require application after the server sets environment,
    # otherwise the --environment option given to the server won't propagate.
    require APP_PATH
    Dir.chdir(Rails.application.root)
    server.start
  }

when 'dbconsole'
  require 'rails/commands/dbconsole'
  require APP_PATH
  Rails::DBConsole.start(Rails.application)

when 'application', 'runner'
  require "rails/commands/#{command}"

when 'new'
  puts "Can't initialize a new Rails application within the directory of another, please change to a non-Rails directory first.\n"
  puts "Type 'rails' for help."
  exit(1)

when '--version', '-v'
  ARGV.unshift '--version'
  require 'rails/commands/application'

else
  puts "Error: Command not recognized" unless command.in?(['-h', '--help'])
  puts <<-EOT
Usage: rails COMMAND [ARGS]

The most common rails commands are:
generate Generate new code (short-cut alias: "g")
console Start the Rails console (short-cut alias: "c")
server Start the Rails server (short-cut alias: "s")
dbconsole Start a console for the database specified in config/database.yml
(short-cut alias: "db")
new Create a new Rails application. "rails new my_app" creates a
new application called MyApp in "./my_app"

In addition to those, there are:
application Generate the Rails application code
destroy Undo code generated with "generate" (short-cut alias: "d")
benchmarker See how fast a piece of code runs
profiler Get profile information from a piece of code
plugin Install a plugin
runner Run a piece of code in the application environment (short-cut alias: "r")

All commands can be run with -h (or --help) for more information.
EOT
  exit(1)
end
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