Class: Rip::Installer

Inherits:
Object
  • Object
show all
Includes:
Memoize
Defined in:
lib/rip/installer.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from Memoize

included, #memoize, #method_added

Constructor Details

#initialize ⇒ Installer

Returns a new instance of Installer.



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# File 'lib/rip/installer.rb', line 6

def initialize
  @installed = {}
  @uninstalled = {}
end

Instance Attribute Details

#installed ⇒ Object (readonly)

Returns the value of attribute installed.



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# File 'lib/rip/installer.rb', line 5

def installed
  @installed
end

Instance Method Details

#cleanup(package) ⇒ Object 



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# File 'lib/rip/installer.rb', line 89

def cleanup(package)
  FileUtils.rm_rf package.cache_path unless package.cached?
end

#copy_files(package) ⇒ Object 



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# File 'lib/rip/installer.rb', line 72

def copy_files(package)
  package_lib = File.join(package.cache_path, 'lib')
  package_bin = File.join(package.cache_path, 'bin')

  dest = Rip::Env.active_dir
  dest_lib = File.join(dest, 'lib')
  dest_bin = File.join(dest, 'bin')

  if File.exists? package_lib
    FileUtils.cp_r package_lib + '/.', dest_lib
  end

  if File.exists? package_bin
    FileUtils.cp_r package_bin + '/.', dest_bin
  end
end

#install(package, parent = nil) ⇒ Object 



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# File 'lib/rip/installer.rb', line 16

def install(package, parent = nil)
  if !package.exists?
    error = package.name
    error += " requested by #{parent} but" if parent
    error += " not found at #{package.source}"
    ui.abort error
  end

  Dir.chdir File.join(Rip.dir, 'rip-packages') do
    begin
      installed = @installed[package.name] || package.installed?

      manager.add_package(package, parent) unless package.meta_package?

      return if installed
      @installed[package.name] = package

      if !package.version
        ui.abort "can't install #{package} - it has no version"
      end

      package.fetch
      package.unpack
      install_dependencies(package)
      run_install_hook(package)
      copy_files(package)
      cleanup(package)
      ui.puts "Successfully installed #{package}" unless package.meta_package?

    rescue VersionConflict => e
      ui.puts e.message
      rollback
      ui.abort "installation failed"

    rescue => e
      rollback
      raise e
    end
  end
end

#install_dependencies(package) ⇒ Object 



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# File 'lib/rip/installer.rb', line 57

def install_dependencies(package)
  package.dependencies.each do |dependency|
    install(dependency, package)
  end
end

#manager ⇒ Object 



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# File 'lib/rip/installer.rb', line 12

def manager
  PackageManager.new
end

#rollback ⇒ Object 



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# File 'lib/rip/installer.rb', line 93

def rollback
  @installed.values.each do |package|
    uninstall(package)
    cleanup(package)
  end
end

#run_install_hook(package) ⇒ Object 



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# File 'lib/rip/installer.rb', line 63

def run_install_hook(package)
  return unless File.exists? File.join(package.cache_path, 'Rakefile')

  Dir.chdir package.cache_path do
    ui.puts "running install hook for #{package.name}"
    system "rake -s rip:install >& /dev/null"
  end
end

#ui ⇒ Object 



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# File 'lib/rip/installer.rb', line 126

def ui
  Rip.ui
end

#uninstall(package, remove_dependencies = false) ⇒ Object 



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# File 'lib/rip/installer.rb', line 100

def uninstall(package, remove_dependencies = false)
  packages = [package]

  if remove_dependencies
    packages.concat manager.packages_that_depend_on(package.name)
  end

  Dir.chdir Rip::Env.active_dir do
    packages.each do |package|
      begin
        next if @uninstalled[package.name]
        @uninstalled[package.name] = true

        package.files.each do |file|
          FileUtils.rm_rf file
        end

        manager.remove_package(package)
      rescue => e
        ui.puts e.message
        next
      end
    end
  end
end