Contents

require 'os'

class GlimmerApplication
  OPERATING_SYSTEMS_SUPPORTED = ["mac", "windows", "linux"]
  TEXT_USAGE = <<-MULTILINE
Usage: glimmer application.rb

Runs a Glimmer application using JRuby, automatically preloading
the glimmer ruby gem and SWT jar dependency.

Example: glimmer hello_world.rb
This runs the Glimmer application hello_world.rb
  MULTILINE
  GLIMMER_LIB_LOCAL = File.expand_path(File.join(__FILE__, '..', 'glimmer.rb'))
  GLIMMER_LIB_GEM = 'glimmer'

  class << self
    def platform_os
      OPERATING_SYSTEMS_SUPPORTED.detect {|os| OS.send("#{os}?")}
    end

    def swt_jar_file
      @swt_jar_file ||= File.expand_path(File.join(__FILE__, '..', '..', 'vendor', 'swt', platform_os, 'swt.jar'))
    end

    def jruby_os_specific_options
      OS.mac? ? "-J-XstartOnFirstThread" : ""
    end

    def jruby_command_options
      "#{jruby_os_specific_options} -J-classpath \"#{swt_jar_file}\""
    end

    def launch(application, dev_mode = false)
      glimmer_lib = GLIMMER_LIB_GEM
      if dev_mode
        glimmer_lib = GLIMMER_LIB_LOCAL
        puts "[DEVELOPMENT MODE] (#{glimmer_lib})"
      end
      system "jruby #{jruby_command_options} -r #{glimmer_lib} -S #{application}"
    end
  end

  def initialize(options)
    @dev_mode = !!options.delete('--dev')
    @application_path = options.first
  end

  def start
    if @application_path
      launch_application
    else
      display_usage
    end
  end

  def launch_application
    puts "Launching Glimmer Application: #{@application_path}" unless @application_path == 'irb'
    self.class.launch(@application_path, @dev_mode)
  end

  def display_usage
    puts TEXT_USAGE
  end
end

Version data entries

2 entries across 2 versions & 1 rubygems

Version	Path
glimmer-0.4.3	lib/glimmer_application.rb
glimmer-0.4.2	lib/glimmer_application.rb