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| #!/usr/bin/env ruby | |
| require "nokogiri" | |
| require "excon" | |
| require "thor" | |
| # Tasks related to maintain my subscriptions. | |
| class FeedTask < Thor | |
| OPML = <<-EOF | |
| <?xml version="1.0" encoding="UTF-8" ?> | |
| <opml version="1.0"> | |
| <head><title>Subscriptions list from jottit.</title></head> | |
| <body></body> | |
| </opml> | |
| EOF | |
| desc "opml_to_md FILE", "Output OPML content as markdown" | |
| def opml_to_md(opml_file) | |
| opml = File.open(opml_file) | |
| doc = Nokogiri::XML::Document.parse(opml) | |
| doc.xpath("//outline[@xmlUrl]").each do |outline| | |
| puts "* [#{outline.attr("text")}](#{outline.attr("xmlUrl")})" | |
| end | |
| end | |
| desc "export_jottit URL", "Create OPML from jottit page." | |
| option :tag, type: :string, default: :all | |
| option :output, type: :string | |
| def export_jottit(url) | |
| Excon.defaults[:ssl_verify_peer] = false | |
| subscriptions = get_feeds_from_jottit(url) | |
| opml = generate_opml(feeds: subscriptions, tag: options[:tag]) | |
| output = if options[:output] | |
| open(options[:output], "w") | |
| else | |
| $stdout | |
| end | |
| output.puts opml | |
| end | |
| protected | |
| def add_outline_element(doc, feed) | |
| outline = Nokogiri::XML::Node.new("outline", doc) | |
| outline.set_attribute("text", feed[:title]) | |
| outline.set_attribute("title", feed[:title]) | |
| outline.set_attribute("type", "rss") | |
| outline.set_attribute("xmlUrl", feed[:xml_url]) | |
| doc.css("body").first.add_child(outline) | |
| end | |
| def generate_opml(feeds: {}, tag: :all) | |
| export_feeds = if tag == :all | |
| feeds.values.flatten | |
| elsif feeds.key? tag | |
| feeds[tag] | |
| else | |
| fail "[generate_opml] tag `#{tag}` not found." | |
| end | |
| doc = Nokogiri::XML.parse(OPML) | |
| export_feeds.each { |feed| add_outline_element(doc, feed) } | |
| doc | |
| end | |
| def get_feeds_from_jottit(url) | |
| feeds, feed_stub = {}, {} | |
| response = Excon.new(url).request(method: :get, expects: [200]) | |
| html = Nokogiri::HTML.parse(response.body) | |
| html.css("#content").children.each do |node| | |
| if node.name == "h1" | |
| if feed_stub.key?(:feeds) && feed_stub[:feeds].size > 0 | |
| feeds[feed_stub[:label]] = feed_stub[:feeds] | |
| end | |
| feed_stub = { label: node.text, feeds: [] } | |
| elsif node.name == "ul" | |
| feed_stub[:feeds] = node.css("li>a") | |
| .map { |a| { title: a.text, xml_url: a.attr(:href) } } | |
| end | |
| end | |
| feeds | |
| rescue => e | |
| raise "[get_feeds_from_jottit] Failed to fetch jottit page #{e}" | |
| end | |
| end | |
| FeedTask.start(ARGV) |
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