JezK
Edit File: itunes.rb
require 'rss/2.0' module RSS ITUNES_PREFIX = 'itunes' ITUNES_URI = 'http://www.itunes.com/dtds/podcast-1.0.dtd' Rss.install_ns(ITUNES_PREFIX, ITUNES_URI) module ITunesModelUtils include Utils def def_class_accessor(klass, name, type, *args) normalized_name = name.gsub(/-/, "_") full_name = "#{ITUNES_PREFIX}_#{normalized_name}" klass_name = "ITunes#{Utils.to_class_name(normalized_name)}" case type when :element, :attribute klass::ELEMENTS << full_name def_element_class_accessor(klass, name, full_name, klass_name, *args) when :elements klass::ELEMENTS << full_name def_elements_class_accessor(klass, name, full_name, klass_name, *args) else klass.install_must_call_validator(ITUNES_PREFIX, ITUNES_URI) klass.install_text_element(normalized_name, ITUNES_URI, "?", full_name, type, name) end end def def_element_class_accessor(klass, name, full_name, klass_name, recommended_attribute_name=nil) klass.install_have_child_element(name, ITUNES_PREFIX, "?", full_name) end def def_elements_class_accessor(klass, name, full_name, klass_name, plural_name, recommended_attribute_name=nil) full_plural_name = "#{ITUNES_PREFIX}_#{plural_name}" klass.install_have_children_element(name, ITUNES_PREFIX, "*", full_name, full_plural_name) end end module ITunesBaseModel extend ITunesModelUtils ELEMENTS = [] ELEMENT_INFOS = [["author"], ["block", :yes_other], ["explicit", :yes_clean_other], ["keywords", :csv], ["subtitle"], ["summary"]] end module ITunesChannelModel extend BaseModel extend ITunesModelUtils include ITunesBaseModel ELEMENTS = [] class << self def append_features(klass) super return if klass.instance_of?(Module) ELEMENT_INFOS.each do |name, type, *additional_infos| def_class_accessor(klass, name, type, *additional_infos) end end end ELEMENT_INFOS = [ ["category", :elements, "categories", "text"], ["image", :attribute, "href"], ["owner", :element], ["new-feed-url"], ] + ITunesBaseModel::ELEMENT_INFOS class ITunesCategory < Element include RSS09 @tag_name = "category" class << self def required_prefix ITUNES_PREFIX end def required_uri ITUNES_URI end end [ ["text", "", true] ].each do |name, uri, required| install_get_attribute(name, uri, required) end ITunesCategory = self install_have_children_element("category", ITUNES_URI, "*", "#{ITUNES_PREFIX}_category", "#{ITUNES_PREFIX}_categories") def initialize(*args) if Utils.element_initialize_arguments?(args) super else super() self.text = args[0] end end def full_name tag_name_with_prefix(ITUNES_PREFIX) end private def maker_target(categories) if text or !itunes_categories.empty? categories.new_category else nil end end def setup_maker_attributes(category) category.text = text if text end def setup_maker_elements(category) super(category) itunes_categories.each do |sub_category| sub_category.setup_maker(category) end end end class ITunesImage < Element include RSS09 @tag_name = "image" class << self def required_prefix ITUNES_PREFIX end def required_uri ITUNES_URI end end [ ["href", "", true] ].each do |name, uri, required| install_get_attribute(name, uri, required) end def initialize(*args) if Utils.element_initialize_arguments?(args) super else super() self.href = args[0] end end def full_name tag_name_with_prefix(ITUNES_PREFIX) end private def maker_target(target) if href target.itunes_image {|image| image} else nil end end def setup_maker_attributes(image) image.href = href end end class ITunesOwner < Element include RSS09 @tag_name = "owner" class << self def required_prefix ITUNES_PREFIX end def required_uri ITUNES_URI end end install_must_call_validator(ITUNES_PREFIX, ITUNES_URI) [ ["name"], ["email"], ].each do |name,| ITunesBaseModel::ELEMENT_INFOS << name install_text_element(name, ITUNES_URI, nil, "#{ITUNES_PREFIX}_#{name}") end def initialize(*args) if Utils.element_initialize_arguments?(args) super else super() self.itunes_name = args[0] self.itunes_email = args[1] end end def full_name tag_name_with_prefix(ITUNES_PREFIX) end private def maker_target(target) target.itunes_owner end def setup_maker_element(owner) super(owner) owner.itunes_name = itunes_name owner.itunes_email = itunes_email end end end module ITunesItemModel extend BaseModel extend ITunesModelUtils include ITunesBaseModel class << self def append_features(klass) super return if klass.instance_of?(Module) ELEMENT_INFOS.each do |name, type| def_class_accessor(klass, name, type) end end end ELEMENT_INFOS = ITunesBaseModel::ELEMENT_INFOS + [["duration", :element, "content"]] class ITunesDuration < Element include RSS09 @tag_name = "duration" class << self def required_prefix ITUNES_PREFIX end def required_uri ITUNES_URI end def parse(duration, do_validate=true) if do_validate and /\A(?: \d?\d:[0-5]\d:[0-5]\d| [0-5]?\d:[0-5]\d )\z/x !~ duration raise ArgumentError, "must be one of HH:MM:SS, H:MM:SS, MM::SS, M:SS: " + duration.inspect end components = duration.split(':') components[3..-1] = nil if components.size > 3 components.unshift("00") until components.size == 3 components.collect do |component| component.to_i end end def construct(hour, minute, second) components = [minute, second] if components.include?(nil) nil else components.unshift(hour) if hour and hour > 0 components.collect do |component| "%02d" % component end.join(":") end end end content_setup alias_method(:value, :content) remove_method(:content=) attr_reader :hour, :minute, :second def initialize(*args) if Utils.element_initialize_arguments?(args) super else super() args = args[0] if args.size == 1 and args[0].is_a?(Array) if args.size == 1 self.content = args[0] elsif args.size > 3 raise ArgumentError, "must be (do_validate, params), (content), " + "(minute, second), ([minute, second]), " + "(hour, minute, second) or ([hour, minute, second]): " + args.inspect else @second, @minute, @hour = args.reverse update_content end end end def content=(value) if value.nil? @content = nil elsif value.is_a?(self.class) self.content = value.content else begin @hour, @minute, @second = self.class.parse(value, @do_validate) rescue ArgumentError raise NotAvailableValueError.new(tag_name, value) end @content = value end end alias_method(:value=, :content=) def hour=(hour) @hour = @do_validate ? Integer(hour) : hour.to_i update_content hour end def minute=(minute) @minute = @do_validate ? Integer(minute) : minute.to_i update_content minute end def second=(second) @second = @do_validate ? Integer(second) : second.to_i update_content second end def full_name tag_name_with_prefix(ITUNES_PREFIX) end private def update_content @content = self.class.construct(hour, minute, second) end def maker_target(target) if @content target.itunes_duration {|duration| duration} else nil end end def setup_maker_element(duration) super(duration) duration.content = @content end end end class Rss class Channel include ITunesChannelModel class Item; include ITunesItemModel; end end end element_infos = ITunesChannelModel::ELEMENT_INFOS + ITunesItemModel::ELEMENT_INFOS element_infos.each do |name, type| case type when :element, :elements, :attribute class_name = Utils.to_class_name(name) BaseListener.install_class_name(ITUNES_URI, name, "ITunes#{class_name}") else accessor_base = "#{ITUNES_PREFIX}_#{name.gsub(/-/, '_')}" BaseListener.install_get_text_element(ITUNES_URI, name, accessor_base) end end end