require "rss/parser"
module RSS
##
# = RSS 0.9 support
#
# RSS has three different versions. This module contains support for version
# 0.9.1[http://www.rssboard.org/rss-0-9-1-netscape].
#
# == Producing RSS 0.9
#
# Producing our own RSS feeds is easy as well. Let's make a very basic feed:
#
# require "rss"
#
# rss = RSS::Maker.make("0.91") do |maker|
# maker.channel.language = "en"
# maker.channel.author = "matz"
# maker.channel.updated = Time.now.to_s
# maker.channel.link = "http://www.ruby-lang.org/en/feeds/news.rss"
# maker.channel.title = "Example Feed"
# maker.channel.description = "A longer description of my feed."
# maker.image.url = "http://www.ruby-lang.org/images/logo.gif"
# maker.image.title = "An image"
# maker.items.new_item do |item|
# item.link = "http://www.ruby-lang.org/en/news/2010/12/25/ruby-1-9-2-p136-is-released/"
# item.title = "Ruby 1.9.2-p136 is released"
# item.updated = Time.now.to_s
# end
# end
#
# puts rss
#
# As you can see, this is a very Builder-like DSL. This code will spit out an
# RSS 0.9 feed with one item. If we needed a second item, we'd make another
# block with maker.items.new_item and build a second one.
module RSS09
NSPOOL = {}
ELEMENTS = []
def self.append_features(klass)
super
klass.install_must_call_validator('', "")
end
end
class Rss < Element
include RSS09
include RootElementMixin
%w(channel).each do |name|
install_have_child_element(name, "", nil)
end
attr_writer :feed_version
alias_method(:rss_version, :feed_version)
alias_method(:rss_version=, :feed_version=)
def initialize(feed_version, version=nil, encoding=nil, standalone=nil)
super
@feed_type = "rss"
end
def items
if @channel
@channel.items
else
[]
end
end
def image
if @channel
@channel.image
else
nil
end
end
def textinput
if @channel
@channel.textInput
else
nil
end
end
def setup_maker_elements(maker)
super
items.each do |item|
item.setup_maker(maker.items)
end
image.setup_maker(maker) if image
textinput.setup_maker(maker) if textinput
end
private
def _attrs
[
["version", true, "feed_version"],
]
end
class Channel < Element
include RSS09
[
["title", nil, :text],
["link", nil, :text],
["description", nil, :text],
["language", nil, :text],
["copyright", "?", :text],
["managingEditor", "?", :text],
["webMaster", "?", :text],
["rating", "?", :text],
["pubDate", "?", :date, :rfc822],
["lastBuildDate", "?", :date, :rfc822],
["docs", "?", :text],
["cloud", "?", :have_attribute],
["skipDays", "?", :have_child],
["skipHours", "?", :have_child],
["image", nil, :have_child],
["item", "*", :have_children],
["textInput", "?", :have_child],
].each do |name, occurs, type, *args|
__send__("install_#{type}_element", name, "", occurs, name, *args)
end
alias date pubDate
alias date= pubDate=
private
def maker_target(maker)
maker.channel
end
def setup_maker_elements(channel)
super
[
[skipDays, "day"],
[skipHours, "hour"],
].each do |skip, key|
if skip
skip.__send__("#{key}s").each do |val|
target_skips = channel.__send__("skip#{key.capitalize}s")
new_target = target_skips.__send__("new_#{key}")
new_target.content = val.content
end
end
end
end
def not_need_to_call_setup_maker_variables
%w(image textInput)
end
class SkipDays < Element
include RSS09
[
["day", "*"]
].each do |name, occurs|
install_have_children_element(name, "", occurs)
end
class Day < Element
include RSS09
content_setup
def initialize(*args)
if Utils.element_initialize_arguments?(args)
super
else
super()
self.content = args[0]
end
end
end
end
class SkipHours < Element
include RSS09
[
["hour", "*"]
].each do |name, occurs|
install_have_children_element(name, "", occurs)
end
class Hour < Element
include RSS09
content_setup(:integer)
def initialize(*args)
if Utils.element_initialize_arguments?(args)
super
else
super()
self.content = args[0]
end
end
end
end
class Image < Element
include RSS09
%w(url title link).each do |name|
install_text_element(name, "", nil)
end
[
["width", :integer],
["height", :integer],
["description"],
].each do |name, type|
install_text_element(name, "", "?", name, type)
end
def initialize(*args)
if Utils.element_initialize_arguments?(args)
super
else
super()
self.url = args[0]
self.title = args[1]
self.link = args[2]
self.width = args[3]
self.height = args[4]
self.description = args[5]
end
end
private
def maker_target(maker)
maker.image
end
end
class Cloud < Element
include RSS09
[
["domain", "", true],
["port", "", true, :integer],
["path", "", true],
["registerProcedure", "", true],
["protocol", "", true],
].each do |name, uri, required, type|
install_get_attribute(name, uri, required, type)
end
def initialize(*args)
if Utils.element_initialize_arguments?(args)
super
else
super()
self.domain = args[0]
self.port = args[1]
self.path = args[2]
self.registerProcedure = args[3]
self.protocol = args[4]
end
end
end
class Item < Element
include RSS09
[
["title", '?', :text],
["link", '?', :text],
["description", '?', :text],
["category", '*', :have_children, "categories"],
["source", '?', :have_child],
["enclosure", '?', :have_child],
].each do |tag, occurs, type, *args|
__send__("install_#{type}_element", tag, "", occurs, tag, *args)
end
private
def maker_target(items)
if items.respond_to?("items")
# For backward compatibility
items = items.items
end
items.new_item
end
def setup_maker_element(item)
super
@enclosure.setup_maker(item) if @enclosure
@source.setup_maker(item) if @source
end
class Source < Element
include RSS09
[
["url", "", true]
].each do |name, uri, required|
install_get_attribute(name, uri, required)
end
content_setup
def initialize(*args)
if Utils.element_initialize_arguments?(args)
super
else
super()
self.url = args[0]
self.content = args[1]
end
end
private
def maker_target(item)
item.source
end
def setup_maker_attributes(source)
source.url = url
source.content = content
end
end
class Enclosure < Element
include RSS09
[
["url", "", true],
["length", "", true, :integer],
["type", "", true],
].each do |name, uri, required, type|
install_get_attribute(name, uri, required, type)
end
def initialize(*args)
if Utils.element_initialize_arguments?(args)
super
else
super()
self.url = args[0]
self.length = args[1]
self.type = args[2]
end
end
private
def maker_target(item)
item.enclosure
end
def setup_maker_attributes(enclosure)
enclosure.url = url
enclosure.length = length
enclosure.type = type
end
end
class Category < Element
include RSS09
[
["domain", "", false]
].each do |name, uri, required|
install_get_attribute(name, uri, required)
end
content_setup
def initialize(*args)
if Utils.element_initialize_arguments?(args)
super
else
super()
self.domain = args[0]
self.content = args[1]
end
end
private
def maker_target(item)
item.new_category
end
def setup_maker_attributes(category)
category.domain = domain
category.content = content
end
end
end
class TextInput < Element
include RSS09
%w(title description name link).each do |name|
install_text_element(name, "", nil)
end
def initialize(*args)
if Utils.element_initialize_arguments?(args)
super
else
super()
self.title = args[0]
self.description = args[1]
self.name = args[2]
self.link = args[3]
end
end
private
def maker_target(maker)
maker.textinput
end
end
end
end
RSS09::ELEMENTS.each do |name|
BaseListener.install_get_text_element("", name, name)
end
module ListenerMixin
private
def initial_start_rss(tag_name, prefix, attrs, ns)
check_ns(tag_name, prefix, ns, "", false)
@rss = Rss.new(attrs['version'], @version, @encoding, @standalone)
@rss.do_validate = @do_validate
@rss.xml_stylesheets = @xml_stylesheets
@last_element = @rss
pr = Proc.new do |text, tags|
@rss.validate_for_stream(tags, @ignore_unknown_element) if @do_validate
end
@proc_stack.push(pr)
end
end
end