Mini Shell

#  Phusion Passenger - https://www.phusionpassenger.com/
#  Copyright (c) 2016-2017 Phusion Holding B.V.
#
#  "Passenger", "Phusion Passenger" and "Union Station" are registered
#  trademarks of Phusion Holding B.V.
#
#  Permission is hereby granted, free of charge, to any person obtaining a copy
#  of this software and associated documentation files (the "Software"), to deal
#  in the Software without restriction, including without limitation the rights
#  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
#  copies of the Software, and to permit persons to whom the Software is
#  furnished to do so, subject to the following conditions:
#
#  The above copyright notice and this permission notice shall be included in
#  all copies or substantial portions of the Software.
#
#  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
#  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
#  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
#  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
#  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
#  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
#  THE SOFTWARE.

## Magic comment: begin bootstrap ##
libdir = File.expand_path('..', File.dirname(__FILE__))
$LOAD_PATH.unshift(libdir)
begin
  require 'rubygems'
rescue LoadError
end
require 'phusion_passenger'
## Magic comment: end bootstrap ##

PhusionPassenger.locate_directories

require 'rbconfig'

module Rack
  module Handler
    class PhusionPassenger
      class << self
        def run(app, options = {})
          result = system(ruby_executable, '-S', find_passenger_standalone,
            'start', *build_args(options))
          if !result
            raise "Error starting Passenger"
          end
        end

        def environment
          ENV['RAILS_ENV'] || 'development'
        end

        def to_s
          'Passenger application server'
        end

      private
        def build_args(options)
          args = ['-e', environment]
          if options[:Port]
            args << '-p'
            args << options[:Port].to_s
          end
          if options[:Host]
            args << '-a'
            args << options[:Host].to_s
          end
          if options[:config]
            args << '-R'
            args << options[:config].to_s
          end
          args
        end

        def rb_config
          if defined?(::RbConfig)
            ::RbConfig::CONFIG
          else
            ::Config::CONFIG
          end
        end

        def ruby_executable
          @ruby_executable ||= rb_config['bindir'] + '/' +
            rb_config['RUBY_INSTALL_NAME'] + rb_config['EXEEXT']
        end

        def find_passenger_standalone
          ::File.join(::PhusionPassenger.bin_dir, 'passenger')
        end
      end
    end

    register 'passenger', 'Rack::Handler::PhusionPassenger'

    def self.default(options = {})
      Rack::Handler::PhusionPassenger
    end
  end
end