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Rubyのrssライブラリをのぞいてみる

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RSS::Makerクラス

rss/Maker/base.rb

class Base

  • new_itemメソッド

    @items << item

class RSSBase < Base

クラスメソッド
  • make(*args, &block)メソッド

    new(*args).make(&block)

    下のinitializeメソッドとmakeメソッドを呼んでいる

    feed= RSS::Maker.make("2.0") do |feed|
    

    のように使う

インスタンスメソッド
  • initialize(feed_version)メソッド
  • makeメソッド

    yield(self)
    to_feed
    

class ChannelBase < Base

新しいフィードを作る際に、以下のように使う

feed.channel.about = about
feed.channel.title = title
feed.channel.description = description
feed.channel.link = link
feed.channel.language = language
  • aboutメソッド

    attr_accessor about

  • titleメソッド

    def title=(new_value)
      @title.content = new_value
    end
    
  • descriptionメソッド

    def description=(new_value)
      @description.content = new_value
    end
    
  • dateメソッド

    attr_accessor date

  • languageメソッド

    attr_accessor language

class ItemsBase < Base

新しいフィードを作る際に、以下のように使う

items.each do |feed_item|
  i= output_feed.items.new_item
  i.title       = item.title
  i.link        = item.link
  i.description = item.description
  i.date        = item.date
end
  • do_sortメソッド, max_sizeメソッド

    attr_accessor :do_sort, :max_size

RSS::Parserクラス

rss/parser.rb

class Parser

クラスメソッド
  • parse(rss, do_validate=true, ignore_unknow_element=true)メソッド

    parser = new(rss, default_parser)
    parser.do_validate = do_validate
    parser.ignore_unknown_element = ignore_unknown_element
    parser.parse

以下のように使う

feed = Net::HTTP.get(host, path).force_encoding('utf-8')
begin
  @feed = RSS::Parser.parse(feed)
rescue RSS::InvalidRSSError
  @feed = RSS::Parser.parse(feed, false )
end

ブログやってます:PAPA-tronix !

Feel-Physics
今はHoloLensのアプリを開発しており、技術記事はすべてブログ( http://weed.nagoya )に書いています。以前はSwift、OpenCV+Python、JavaScript、Objective-Cを書いていました。
http://weed.nagoya
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