Rails template to install the OpenLaszlo plugin

openlaszlo-template.rb

# This application template for Rails >= 2.3 installs the OpenLaszlo
# plugin and its dependencies.  It offers to download the OpenLaszlo
# SDK and set the OPENLASZLO_HOME environment variable, and it updates
# .gitignore.
#
# To create a new Rails app:
#   rails webapp -m http://gist.github.com/83809.txt
#
# To upgrade an existing app:
#   rake rails:template LOCATION=http://gist.github.com/83809.txt
#
# To create a new Rails app, or upgrade an existing one, *and* create
# a starter applet name myapp that's served from /home/applet, do one of:
#   # To create a new application
#   generate=myapp/home/applet rails webapp -m http://gist.github.com/83809.txt
#   # To upgrade an existing one
#   generate=myapp/home/applet rake rails:template LOCATION=http://gist.github.com/83809.txt


#
# Install OpenLaszlo SDK
#

def download_sdk
  ol_version = '4.2.0.2'
  platform_suffix = case RUBY_PLATFORM
                    when /darwin/ then '-osx-dev-install.dmg'
                    when /win/ then '-windows-dev-install.exe'
                    else '-unix.tar.gz'
                    end
  ol_download_url = "http://download.openlaszlo.org/#{ol_version}/openlaszlo-#{ol_version}#{platform_suffix}"
  ol_download_dir = 'tmp'
  ol_basename = File.basename(ol_download_url)
  ol_download_path = File.join(ol_download_dir, ol_basename)
  run "mkdir -p #{ol_download_dir}"
  puts "curl -L #{ol_download_url} > #{ol_download_path}"
  msgs << "Downloaded #{File.basename(ol_basename)} to tmp"
  msgs << "Now follow the install instructions from http://www.openlaszlo.org/lps4.2/docs/installation/install-instructions.html."
  msgs << "When you're done, you can delete #{ol_download_path}."
end

def openlaszlo_path_is_right?(path=ENV['OPENLASZLO_HOME'])
  return path &&
    File.exists?(probefile = File.join(path, 'README.txt')) &&
    open(probefile).read =~ /Laszlo/
end

msgs = []
needs_download, needs_path = false, false
case
when ! ENV['OPENLASZLO_HOME']
  if yes?("OPENLASZLO_HOME is not set.  Have you installed the OpenLaszlo SDK?")
    while true
      unless yes?("Shall I edit your ~/.bashrc to set OPENLASZLO_HOME?")
        needs_path = true
        break
      end
      path = ask("What is the path to the OpenLaszlo SDK?")
      unless openlaszlo_path_is_right?(path)
        puts "Sorry, that doesn't seem to be right."
        next
      end
      run "echo export OPENLASZLO_SDK=\\\"#{path}\\\" >> ~/.bashrc"
      msgs << "Execute the following line before you continue:"
      msgs << "  export OPENLASZLO_SDK=\"#{path}\""
      break
    end
  elsif yes?("Shall I download it?")
    download_sdk
    needs_path = true
  else
    needs_download = true
  end
when ! openlaszlo_path_is_right?
  puts "OPENLASZLO_HOME is set, but not to the location of the OpenLaszlo SDK."
  if no?("Have you installed the OpenLaszlo SDK?")
    if yes?("Shall I download it?")
      download_sdk
      needs_path = true
    else
      needs_download = true
    end
  else
    needs_path = true
  end
end
if needs_download
  msgs << "Please download the OpenLaszlo SDK from http://www.openlaszlo.org/download, and set OPENLASZLO_HOME to point to its installed location."
elsif needs_path
  msgs << "Please set OPENLASZLO_HOME to point to the installed location OpenLaszlo SDK."
end


#
# Gem
#

gem 'ropenlaszlo', :lib => 'openlaszlo', :version => '>= 0.6.3'
rake("gems:install", :sudo => true)


#
# Plugin
#

plugin 'openlaszlo-plugin', :git => 'git://github.com/osteele/openlaszlo-plugin.git'
if ENV['generate']
  components = %w[applet home applet]
  ENV['generate'].split('/').each_with_index do |component, i|
    components[i] = component if i < components.length
  end
  appname, controller, action = components
  generate("applet", appname, controller, action)
else
  msgs << "To create an applet name myapp, that's served at /home/view, execute:"
  msgs << "  script/generate applet myapp home view"
end


#
# .gitignore
#

if File.exists?('.git') or true
  require 'shellwords'
  run "touch .gitignore"
  for pattern in [
      '# openlaszlo_plugin',
      '/public/expressInstall.swf',
      '/public/javascripts/swfobject.js',
      '/public/applets/',
      '*.lzx.lzr=*.swf']
    run "echo #{Shellwords.escape(pattern)} >> .gitignore"
  end
end


#
# Finally
#

if msgs.any?
  puts
  msgs.each do |line| puts line end
  puts
end