--- /dev/null
+require 'yaml'
+require 'i18n/core_ext/hash'
+require 'i18n/core_ext/kernel/surpress_warnings'
+
+module I18n
+ module Backend
+ module Base
+ include I18n::Backend::Transliterator
+
+ # Accepts a list of paths to translation files. Loads translations from
+ # plain Ruby (*.rb) or YAML files (*.yml). See #load_rb and #load_yml
+ # for details.
+ def load_translations(*filenames)
+ filenames = I18n.load_path if filenames.empty?
+ filenames.flatten.each { |filename| load_file(filename) }
+ end
+
+ # This method receives a locale, a data hash and options for storing translations.
+ # Should be implemented
+ def store_translations(locale, data, options = {})
+ raise NotImplementedError
+ end
+
+ def translate(locale, key, options = {})
+ raise InvalidLocale.new(locale) unless locale
+ entry = key && lookup(locale, key, options[:scope], options)
+
+ if options.empty?
+ entry = resolve(locale, key, entry, options)
+ else
+ count, default = options.values_at(:count, :default)
+ values = options.except(*RESERVED_KEYS)
+ entry = entry.nil? && default ?
+ default(locale, key, default, options) : resolve(locale, key, entry, options)
+ end
+
+ throw(:exception, I18n::MissingTranslation.new(locale, key, options)) if entry.nil?
+ entry = entry.dup if entry.is_a?(String)
+
+ entry = pluralize(locale, entry, count) if count
+ entry = interpolate(locale, entry, values) if values
+ entry
+ end
+
+ # Acts the same as +strftime+, but uses a localized version of the
+ # format string. Takes a key from the date/time formats translations as
+ # a format argument (<em>e.g.</em>, <tt>:short</tt> in <tt>:'date.formats'</tt>).
+ def localize(locale, object, format = :default, options = {})
+ raise ArgumentError, "Object must be a Date, DateTime or Time object. #{object.inspect} given." unless object.respond_to?(:strftime)
+
+ if Symbol === format
+ key = format
+ type = object.respond_to?(:sec) ? 'time' : 'date'
+ options = options.merge(:raise => true, :object => object, :locale => locale)
+ format = I18n.t(:"#{type}.formats.#{key}", options)
+ end
+
+ # format = resolve(locale, object, format, options)
+ format = format.to_s.gsub(/%[aAbBp]/) do |match|
+ case match
+ when '%a' then I18n.t(:"date.abbr_day_names", :locale => locale, :format => format)[object.wday]
+ when '%A' then I18n.t(:"date.day_names", :locale => locale, :format => format)[object.wday]
+ when '%b' then I18n.t(:"date.abbr_month_names", :locale => locale, :format => format)[object.mon]
+ when '%B' then I18n.t(:"date.month_names", :locale => locale, :format => format)[object.mon]
+ when '%p' then I18n.t(:"time.#{object.hour < 12 ? :am : :pm}", :locale => locale, :format => format) if object.respond_to? :hour
+ end
+ end
+
+ object.strftime(format)
+ end
+
+ # Returns an array of locales for which translations are available
+ # ignoring the reserved translation meta data key :i18n.
+ def available_locales
+ raise NotImplementedError
+ end
+
+ def reload!
+ @skip_syntax_deprecation = false
+ end
+
+ protected
+
+ # The method which actually looks up for the translation in the store.
+ def lookup(locale, key, scope = [], options = {})
+ raise NotImplementedError
+ end
+
+ # Evaluates defaults.
+ # If given subject is an Array, it walks the array and returns the
+ # first translation that can be resolved. Otherwise it tries to resolve
+ # the translation directly.
+ def default(locale, object, subject, options = {})
+ options = options.dup.reject { |key, value| key == :default }
+ case subject
+ when Array
+ subject.each do |item|
+ result = resolve(locale, object, item, options) and return result
+ end and nil
+ else
+ resolve(locale, object, subject, options)
+ end
+ end
+
+ # Resolves a translation.
+ # If the given subject is a Symbol, it will be translated with the
+ # given options. If it is a Proc then it will be evaluated. All other
+ # subjects will be returned directly.
+ def resolve(locale, object, subject, options = {})
+ return subject if options[:resolve] == false
+ result = catch(:exception) do
+ case subject
+ when Symbol
+ I18n.translate(subject, options.merge(:locale => locale, :throw => true))
+ when Proc
+ date_or_time = options.delete(:object) || object
+ resolve(locale, object, subject.call(date_or_time, options))
+ else
+ subject
+ end
+ end
+ result unless result.is_a?(MissingTranslation)
+ end
+
+ # Picks a translation from an array according to English pluralization
+ # rules. It will pick the first translation if count is not equal to 1
+ # and the second translation if it is equal to 1. Other backends can
+ # implement more flexible or complex pluralization rules.
+ def pluralize(locale, entry, count)
+ return entry unless entry.is_a?(Hash) && count
+
+ key = :zero if count == 0 && entry.has_key?(:zero)
+ key ||= count == 1 ? :one : :other
+ raise InvalidPluralizationData.new(entry, count) unless entry.has_key?(key)
+ entry[key]
+ end
+
+ # Interpolates values into a given string.
+ #
+ # interpolate "file %{file} opened by %%{user}", :file => 'test.txt', :user => 'Mr. X'
+ # # => "file test.txt opened by %{user}"
+ def interpolate(locale, string, values = {})
+ if string.is_a?(::String) && !values.empty?
+ I18n.interpolate(string, values)
+ else
+ string
+ end
+ end
+
+ # Loads a single translations file by delegating to #load_rb or
+ # #load_yml depending on the file extension and directly merges the
+ # data to the existing translations. Raises I18n::UnknownFileType
+ # for all other file extensions.
+ def load_file(filename)
+ type = File.extname(filename).tr('.', '').downcase
+ raise UnknownFileType.new(type, filename) unless respond_to?(:"load_#{type}", true)
+ data = send(:"load_#{type}", filename)
+ raise InvalidLocaleData.new(filename) unless data.is_a?(Hash)
+ data.each { |locale, d| store_translations(locale, d || {}) }
+ end
+
+ # Loads a plain Ruby translations file. eval'ing the file must yield
+ # a Hash containing translation data with locales as toplevel keys.
+ def load_rb(filename)
+ eval(IO.read(filename), binding, filename)
+ end
+
+ # Loads a YAML translations file. The data must have locales as
+ # toplevel keys.
+ def load_yml(filename)
+ begin
+ YAML.load_file(filename)
+ rescue TypeError
+ nil
+ rescue SyntaxError
+ nil
+ end
+ end
+ end
+ end
+end
Code Review / packages / precise / mcollective.git / blobdiff