Module: Saxon::Loader

Defined in:
lib/saxon/loader.rb

Defined Under Namespace

Classes: MissingJarError, NoJarsError

Constant Summary collapse

LOAD_SEMAPHORE = 
Mutex.new

Class Method Summary collapse

Class Method Details

.load!(saxon_home = File.expand_path('../../../vendor/saxonica', __FILE__)) ⇒ true, false

Returns true if Saxon had not been loaded and is now, and false if Saxon was already loaded

Parameters:

  • saxon_home (String, Pathname) (defaults to: File.expand_path('../../../vendor/saxonica', __FILE__)) —

    the path to the dir containing Saxon’s .jars. Defaults to the vendored Saxon HE

Returns:

  • (true, false) —

    Returns true if Saxon had not been loaded and is now, and false if Saxon was already loaded



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# File 'lib/saxon/loader.rb', line 40

def self.load!(saxon_home = File.expand_path('../../../vendor/saxonica', __FILE__))
  return false if @saxon_loaded
  LOAD_SEMAPHORE.synchronize do
    if Saxon::S9API.const_defined?(:Processor)
      false
    else
      if jars_not_on_classpath?
        saxon_home = Pathname.new(saxon_home)
        raise NoJarsError, saxon_home unless saxon_home.directory?
        jars = [main_jar(saxon_home)].compact
        raise MissingJarError if jars.empty?
        jars += extra_jars(saxon_home)

        add_jars_to_classpath!(saxon_home, jars)
      end
      import_classes_to_namespace!

      @saxon_loaded = true
      true
    end
  end
end