Add ReactiveX documentation

Author: jmerle

assets/javascripts/templates/pages/about_tmpl.coffee

@@ -595,6 +595,11 @@ credits = [
     '2013-present Facebook Inc.',
     'MIT',
     'https://raw.githubusercontent.com/facebook/react/master/LICENSE'
+  ], [
+    'ReactiveX',
+    'ReactiveX contributors',
+    'Apache',
+    'https://raw.githubusercontent.com/ReactiveX/reactivex.github.io/develop/LICENSE'
   ], [
     'Redis',
     '2009-2018 Salvatore Sanfilippo',

assets/stylesheets/application.css.scss

@@ -89,6 +89,7 @@
         'pages/ramda',
         'pages/rdoc',
         'pages/react_native',
+        'pages/reactivex',
         'pages/redis',
         'pages/rethinkdb',
         'pages/rfc',

assets/stylesheets/pages/_reactivex.scss

@@ -0,0 +1,11 @@
+._reactivex {
+  @extend %simple;
+
+  img {
+    max-width: 50%;
+  }
+
+  figure {
+    margin: 0;
+  }
+}

lib/docs/filters/reactivex/clean_html.rb

@@ -0,0 +1,65 @@
+module Docs
+  class Reactivex
+    class CleanHtmlFilter < Filter
+      def call
+        # Can't use options[:container] because then the navigation bar wouldn't be scraped
+        @doc = at_css(root_page? ? '.col-md-8' : '.col-sm-8')
+
+        # Remove breadcrumbs
+        css('.breadcrumb').remove
+
+        # Replace interactive demo's with links to them
+        css('rx-marbles').each do |node|
+          node.name = 'a'
+          node.content = 'Open interactive diagram on rxmarbles.com'
+          node['href'] = "https://rxmarbles.com/##{node['key']}"
+          node.remove_attribute('key')
+        end
+
+        # Syntax-highlighted code blocks
+        css('.code').each do |node|
+          language = node['class'].gsub('code', '').strip
+
+          pre = node.at_css('pre')
+          pre['data-language'] = language
+          pre.content = pre.content.strip
+
+          node.replace(pre)
+        end
+
+        # Assume JavaScript syntax for code blocks not surrounded by a div.code
+        css('pre').each do |node|
+          next if node['data-language']
+
+          node.content = node.content.strip
+          node['data-language'] = 'javascript'
+        end
+
+        # Make language specific implementation titles prettier
+        css('.panel-title').each do |node|
+          # Remove the link, keep the text
+          node.content = node.content
+
+          # Transform it into a header for better styling
+          node.name = 'h3'
+        end
+
+        # Remove language specific implementations that are TBD
+        css('span').each do |node|
+          next unless node.content == 'TBD'
+          node.xpath('./ancestor::div[contains(@class, "panel-default")][1]').remove
+        end
+
+        # Remove the : at the end of "Language-Specific Information:"
+        css('h2').each do |node|
+          node.inner_html = node.inner_html.gsub('Information:', 'Information')
+        end
+
+        # Remove attributes to reduce file size
+        css('div').remove_attr('class')
+
+        doc
+      end
+    end
+  end
+end

lib/docs/filters/reactivex/entries.rb

@@ -0,0 +1,14 @@
+module Docs
+  class Reactivex
+    class EntriesFilter < Docs::EntriesFilter
+      def get_name
+        at_css('h1').content
+      end
+
+      def get_type
+        links = css('.breadcrumb > li:nth-child(2) > a')
+        links.size > 0 ? links.first.content : 'Manual'
+      end
+    end
+  end
+end

lib/docs/scrapers/reactivex.rb

@@ -0,0 +1,23 @@
+module Docs
+  class Reactivex < UrlScraper
+    self.type = 'reactivex'
+    self.name = 'ReactiveX'
+    self.base_url = 'http://reactivex.io/'
+    self.root_path = 'intro.html'
+    self.links = {
+      home: 'http://reactivex.io/'
+    }
+
+    html_filters.push 'reactivex/entries', 'reactivex/clean_html'
+
+    options[:download_images] = false
+
+    options[:only_patterns] = [/documentation\//]
+    options[:skip_patterns] = [/ko\//]
+
+    options[:attribution] = <<-HTML
+      &copy; ReactiveX contributors<br>
+      Licensed under the Apache License 2.0.
+    HTML
+  end
+end

public/icons/docs/reactivex/SOURCE

@@ -0,0 +1 @@
+https://github.com/ReactiveX/reactivex.github.io/blob/develop/assets/Rx_Icon.png