Class: Middleman::CoreExtensions::Internationalization

Inherits:
Extension
  • Object
show all
Defined in:
lib/middleman-core/core_extensions/i18n.rb

Defined Under Namespace

Classes: LocalizedPageDescriptor

Constant Summary

Constants included from Contracts

Contracts::PATH_MATCHER

Instance Attribute Summary

Attributes inherited from Extension

#app, #options

Instance Method Summary collapse

Methods inherited from Extension

activated_extension, #add_exposed_to_context, #after_build, after_extension_activated, #after_extension_activated, #before_build, #before_configuration, clear_after_extension_callbacks, config, define_setting, expose_to_application, expose_to_config, expose_to_template, global_config, helpers, option, #ready, resources

Methods included from Contracts

#Contract

Constructor Details

#initialize ⇒ Internationalization

Returns a new instance of Internationalization.



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# File 'lib/middleman-core/core_extensions/i18n.rb', line 15

def initialize(*)
  super

  require 'i18n'

  options[:locales] = options[:langs] unless options[:langs].nil?

  options[:locale_map] = options[:lang_map] unless options[:lang_map].nil?

  # Don't fail on invalid locale, that's not what our current
  # users expect.
  ::I18n.enforce_available_locales = false

  # This is for making the tests work - since the tests
  # don't completely reload middleman, I18n.load_path can get
  # polluted with paths from other test app directories that don't
  # exist anymore.
  if ENV['TEST']
    app.after_configuration_eval do
      ::I18n.load_path.delete_if { |path| path =~ %r{tmp/aruba} }
      ::I18n.reload!
    end
  end
end

Instance Method Details

#after_configuration ⇒ Object 



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# File 'lib/middleman-core/core_extensions/i18n.rb', line 40

def after_configuration
  # See https://github.com/svenfuchs/i18n/wiki/Fallbacks
  unless options[:no_fallbacks]
    require 'i18n/backend/fallbacks'
    ::I18n::Backend::Simple.send(:include, ::I18n::Backend::Fallbacks)
  end

  locales_file_path = options[:data]

  # Tell the file watcher to observe the :data_dir
  app.files.watch :locales,
                  path: File.join(app.root, locales_file_path),
                  only: /.*(rb|yml|yaml)$/

  # Setup data files before anything else so they are available when
  # parsing config.rb
  app.files.on_change(:locales, &method(:on_file_changed))

  @maps = {}
  @mount_at_root = options[:mount_at_root].nil? ? locales.first : options[:mount_at_root]

  configure_i18n

  logger.info "== Locales: #{locales.join(', ')} (Default #{@mount_at_root})"
end

#locale ⇒ Object Also known as: lang 



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# File 'lib/middleman-core/core_extensions/i18n.rb', line 140

def locale
  ::I18n.locale
end

#locales ⇒ Object Also known as: langs 



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# File 'lib/middleman-core/core_extensions/i18n.rb', line 132

def locales
  @locales ||= known_locales
end

#localized_path(path, locale) ⇒ Object 



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# File 'lib/middleman-core/core_extensions/i18n.rb', line 258

def localized_path(path, locale)
  lookup_path = path.dup
  lookup_path << app.config[:index_file] if lookup_path.end_with?('/')

  @lookup[lookup_path] && @lookup[lookup_path][locale]
end

#manipulate_resource_list(resources) ⇒ Object 



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# File 'lib/middleman-core/core_extensions/i18n.rb', line 150

def manipulate_resource_list(resources)
  new_resources = []

  file_extension_resources = resources.select do |resource|
    # Ignore resources which are outside of the localizable directory
    File.fnmatch?(File.join(options[:templates_dir], '**'), resource.path) &&
      parse_locale_extension(resource.path)
  end

  localizable_folder_resources = resources.select do |resource|
    !file_extension_resources.include?(resource) && File.fnmatch?(File.join(options[:templates_dir], '**'), resource.path)
  end

  # If it's a "localizable template"
  localizable_folder_resources.each do |resource|
    next if resource.ignored?

    page_id = File.basename(resource.path, File.extname(resource.path))
    locales.each do |locale|
      # Remove folder name
      path = resource.path.sub(options[:templates_dir], '')
      new_resources << build_resource(path, resource.path, page_id, locale)
    end

    resource.ignore!

    # This is for backwards compatibility with the old provides_metadata-based code
    # that used to be in this extension, but I don't know how much sense it makes.
    # next if resource.options[:locale]

    # $stderr.puts "Defaulting #{resource.path} to #{@mount_at_root}"
    # resource.add_metadata options: { locale: @mount_at_root }, locals: { locale: @mount_at_root }
  end

  # If it uses file extension localization
  file_extension_resources.each do |resource|
    next if resource.ignored?

    result = parse_locale_extension(resource.path)
    ext_locale, path, page_id = result
    new_resources << build_resource(path, resource.path, page_id, ext_locale)

    resource.ignore!
  end

  # This generates a lookup hash that maps the real path (as seen by the web
  # page user) to the paths of the localized versions. The lookup is later
  # used by `url_for '/some/page.html', :locale => :en` and other url
  # helpers.
  #
  # For example (given :mount_at_root => :es) and localized paths:
  #
  # @lookup['/en/magic/stuff.html'] = {:en => '/en/magic/stuff.html', :de => '/de/magisches/zeug.html', :es => '/magico/cosas.html'}
  # @lookup['/de/index.html'] = {:en => '/en/index.html', :de => '/de/index.html', :es => '/index.html'}
  # @lookup['/en/index.html'] = {:en => '/en/index.html', :de => '/de/index.html', :es => '/index.html'}
  # @lookup['/index.html'] = {:en => '/en/index.html', :de => '/de/index.html', :es => '/index.html'}
  #
  # We do this by grouping by the source paths with the locales removed. All
  # the localized pages with the same content in different languages get the
  # same key.
  #
  @source_path_group = new_resources.group_by do |resource|
    # Try to get source path without extension
    _locale, path, _page_id = parse_locale_extension(resource.source_path)

    # If that fails, there is no extension, so we use the original path. We
    # can not use resource.path here, because .path may be translated, so the
    # file names do not match up.
    path ||= resource.source_path

    # This will contain the localizable/ directory, but that does not matter,
    # because it will be contained in both alternatives above, so the
    # grouping key will be correct.
    path
  end

  # Then we walk this grouped hash and generate the lookup table as given
  # above.
  @lookup = {}
  @source_path_group.each do |src_path, resources|
    # For each group we generate a list of the paths the user really sees
    # (e.g. ['/en/index.html', '/de/index.html', '/index.html'])
    exposed_paths = resources.map(&:path)

    # We also generate a map with the same infos, but with the locales as keys.
    # e.g. {:en => '/en/index.html', :de => '/de/index.html', :es => '/index.html'}
    locale_map = resources.each_with_object({}) do |resource, map|
      map[resource.locale] = '/' + resource.path
    end

    # Then we add those to the lookup table, so every path has a
    # cross-reference to any other path in other locales.
    exposed_paths.each do |path|
      @lookup['/' + path] = locale_map
    end

    if @mount_at_root == false
      src_path = src_path.sub(options[:templates_dir] + '/', '')
      @lookup["/#{src_path}"] = locale_map
    end
  end

  new_resources.reduce(resources) do |sum, r|
    r.execute_descriptor(app, sum)
  end
end

#path_root(locale) ⇒ Object 



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# File 'lib/middleman-core/core_extensions/i18n.rb', line 266

def path_root(locale)
  if (options[:mount_at_root] == locale) || (options[:mount_at_root].nil? && locales[0] == locale)
    '/'
  else
    replacement = options[:locale_map][locale] || locale
    options[:path].sub(':locale', replacement.to_s).sub(':lang', replacement.to_s) # Backward compat
  end
end