diff options
author | kou <kou@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2006-06-17 00:15:36 +0000 |
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committer | kou <kou@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2006-06-17 00:15:36 +0000 |
commit | 201028438d5cb0bd8111aa184fa3cfcbe2d329aa (patch) | |
tree | e082e989a41f0b4ee109ae1c678e83824b964654 /lib/rss | |
parent | 5a6f02677bc9b2d5562f5d58b34d5aff440f76bf (diff) |
* lib/rss, test/rss: backported from trunk. (2005-11-16 - now)
* lib/rss/taxonomy.rb: implemented taxonomy module.
* test/rss/test_taxonomy.rb: added tests for taxonomy support.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_8@10288 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'lib/rss')
-rw-r--r-- | lib/rss/taxonomy.rb | 196 |
1 files changed, 181 insertions, 15 deletions
diff --git a/lib/rss/taxonomy.rb b/lib/rss/taxonomy.rb index f70d475a11..d7a5b6d19e 100644 --- a/lib/rss/taxonomy.rb +++ b/lib/rss/taxonomy.rb @@ -1,32 +1,198 @@ -# Experimental - require "rss/1.0" +require "rss/dublincore" module RSS TAXO_PREFIX = "taxo" - TAXO_NS = "http://purl.org/rss/1.0/modules/taxonomy/" + TAXO_URI = "http://purl.org/rss/1.0/modules/taxonomy/" - Element.install_ns(TAXO_PREFIX, TAXO_NS) + RDF.install_ns(TAXO_PREFIX, TAXO_URI) TAXO_ELEMENTS = [] %w(link).each do |name| full_name = "#{TAXO_PREFIX}_#{name}" - BaseListener.install_get_text_element(TAXO_NS, name, "#{full_name}=") + BaseListener.install_get_text_element(TAXO_URI, name, "#{full_name}=") + TAXO_ELEMENTS << "#{TAXO_PREFIX}_#{name}" + end + + %w(topic topics).each do |name| + class_name = Utils.to_class_name(name) + BaseListener.install_class_name(TAXO_URI, name, "Taxo#{class_name}") TAXO_ELEMENTS << "#{TAXO_PREFIX}_#{name}" end + + module TaxoTopicsModel + extend BaseModel - module TaxonomyModel - attr_writer(*%w(title description creator subject publisher - contributor date format identifier source - language relation coverage rights - ).collect{|name| "#{TAXO_PREFIX}_#{name}"}) + def self.append_features(klass) + super + + var_name = "#{TAXO_PREFIX}_topics" + klass.install_have_child_element(var_name) + end + + def taxo_validate(tags) + found_topics = false + tags.each do |tag| + if tag == "topics" + if found_topics + raise TooMuchTagError.new(tag, tag_name) + else + found_topics = true + end + else + raise UnknownTagError.new(tag, TAXO_URI) + end + end + end + + class TaxoTopics < Element + include RSS10 + + Bag = ::RSS::RDF::Bag + + class << self + def required_prefix + TAXO_PREFIX + end + + def required_uri + TAXO_URI + end + end + + @tag_name = "topics" + + install_have_child_element("Bag") + + install_must_call_validator('rdf', ::RSS::RDF::URI) + + def initialize(bag=Bag.new) + super() + @Bag = bag + end + + def full_name + tag_name_with_prefix(TAXO_PREFIX) + end + + def to_s(need_convert=true, indent=calc_indent) + rv = tag(indent) do |next_indent| + [ + Bag_element(need_convert, next_indent), + other_element(need_convert, next_indent), + ] + end + end + + private + def children + [@Bag] + end + + def _tags + rv = [] + rv << [::RSS::RDF::URI, 'Bag'] unless @Bag.nil? + rv + end + + def rdf_validate(tags) + _validate(tags, [["Bag", nil]]) + end + end end - class Channel; extend TaxonomyModel; end - class Item; extend TaxonomyModel; end - class Image; extend TaxonomyModel; end - class TextInput; extend TaxonomyModel; end - + module TaxoTopicModel + extend BaseModel + + def self.append_features(klass) + super + var_name = "#{TAXO_PREFIX}_topic" + klass.install_have_children_element(var_name) + end + + def taxo_validate(tags) + tags.each do |tag| + if tag != "topic" + raise UnknownTagError.new(tag, TAXO_URI) + end + end + end + + class TaxoTopic < Element + include RSS10 + + include DublinCoreModel + include TaxoTopicsModel + + class << self + def required_prefix + TAXO_PREFIX + end + + def required_uri + TAXO_URI + end + end + + @tag_name = "topic" + + install_get_attribute("about", ::RSS::RDF::URI, true) + install_text_element("#{TAXO_PREFIX}_link") + + def initialize(about=nil) + super() + @about = about + end + + def full_name + tag_name_with_prefix(TAXO_PREFIX) + end + + def to_s(need_convert=true, indent=calc_indent) + rv = tag(indent) do |next_indent| + [ + link_element(need_convert, next_indent), + other_element(need_convert, next_indent), + ] + end + end + + def taxo_validate(tags) + elements = %w(link topics) + counter = {} + + tags.each do |tag| + if elements.include?(tag) + counter[tag] ||= 0 + counter[tag] += 1 + raise TooMuchTagError.new(tag, tag_name) if counter[tag] > 1 + else + raise UnknownTagError.new(tag, TAXO_URI) + end + end + end + + private + def children + [@taxo_link, @taxo_topics] + end + + def _tags + rv = [] + rv << [TAXO_URI, "link"] unless @taxo_link.nil? + rv << [TAXO_URI, "topics"] unless @taxo_topics.nil? + rv + end + end + end + + class RDF + include TaxoTopicModel + class Channel + include TaxoTopicsModel + end + class Item; include TaxoTopicsModel; end + end end |