#!/home/ew/bin/ruby
STDIN.sync = STDOUT.sync = STDERR.sync = true
usage = "Usage: #{File.basename($0)} <config_file>"
require 'unicorn'
exit 0 if ARGV.size == 2 && ARGV[-1] == 'check' # used for reexec_check
ARGV.size == 1 or abort usage
case ARGV[0]
when 'check' then exit
when '-h' then puts usage
when '-v' then puts "unicorn v#{Unicorn::Const::UNICORN_VERSION}"
else
  File.readable?(ARGV[0]) && File.file?(ARGV[0]) or abort usage
  config = eval(File.read(ARGV[0]))
  config.kind_of?(Hash) or abort "config is not a hash: #{config.class}"
  app = config.delete(:app) or abort "Missing :app key in config!"

  # only daemonize if we're not inheriting file descriptors from our parent
  if ENV['UNICORN_DAEMONIZE'] && ! ENV['UNICORN_FD']
    # don't set umask(0000), chdir("/") or redirect STDOUT/STDERR since
    # it's more flexible to handle that in the config (which is just Ruby)
    exit if fork
    Process.setsid
    exit if fork
    STDIN.reopen("/dev/null")
  end
  Unicorn.run(app, config)
end