Class: Juicer::Install::RhinoInstaller

Inherits:
Base
  • Object
show all
Defined in:
lib/juicer/install/rhino_installer.rb

Overview

Install and uninstall routines for the Mozilla Rhino jar.

Instance Attribute Summary

Attributes inherited from Base

#install_dir

Instance Method Summary collapse

Methods inherited from Base

#bin_path, #dependencies, #dependency, #download, #installed?, #log, #name, #path

Constructor Details

#initialize(install_dir = Juicer.home) ⇒ RhinoInstaller

Returns a new instance of RhinoInstaller.



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# File 'lib/juicer/install/rhino_installer.rb', line 11

def initialize(install_dir = Juicer.home)
  super(install_dir)
  @latest = nil
  @website = "http://ftp.mozilla.org/pub/mozilla.org/js/"
end

Instance Method Details

#install(version = nil) ⇒ Object

Install Rhino. Downloads the jar file and stores it in the installation directory along with the License text.



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# File 'lib/juicer/install/rhino_installer.rb', line 21

def install(version = nil)
  version = super((version || latest).gsub(/\./, "_"))
  base = "rhino#{version}"
  filename = download(File.join(@website, "#{base}.zip"))
  target = File.join(@install_dir, path)

  Zip::ZipFile.open(filename) do |file|
    FileUtils.mkdir_p(File.join(target, version))

    begin
      file.extract("#{base.sub(/-RC\d/, "")}/LICENSE.txt", File.join(target, version, "LICENSE.txt"))
    rescue Exception
      # Fail silently, some releases don't carry the license
    end

    file.extract("#{base.sub(/-RC\d/, "")}/js.jar", File.join(target, "bin", "#{base}.jar"))
  end
end

#latest ⇒ Object 



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# File 'lib/juicer/install/rhino_installer.rb', line 50

def latest
  return @latest if @latest
  webpage = Nokogiri::HTML(open(@website).read)
  versions = (webpage / "td a").to_a.find_all { |a| a.attr("href") =~ /rhino\d_/ }
  @latest = versions.collect { |n| n.attr("href") }.sort.last.match(/rhino(\d_.*)\.zip/)[1]
end

#uninstall(version = nil) ⇒ Object

Uninstalls Rhino



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# File 'lib/juicer/install/rhino_installer.rb', line 43

def uninstall(version = nil)
  super((version || latest).gsub(/\./, "_")) do |dir, version|
    base = "rhino#{version}"
    File.delete(File.join(dir, "bin/", "#{base}.jar"))
  end
end