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Adds rel nofollow to external links (#4918)
* ✨ Adds rel nofollow to external links Fixes #4583 Signed-off-by: Franck Nijhof <frenck@geekchimp.com> * 🎀 Adds support for appending nofollow to existing external links
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1
Gemfile
1
Gemfile
@ -24,3 +24,4 @@ group :jekyll_plugins do
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end
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gem 'sinatra', '~> 1.4.2'
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gem 'nokogiri'
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@ -42,6 +42,9 @@ GEM
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rb-inotify (~> 0.9, >= 0.9.7)
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mercenary (0.3.6)
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method_source (0.8.2)
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mini_portile2 (2.3.0)
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nokogiri (1.8.2)
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mini_portile2 (~> 2.3.0)
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octopress (3.0.11)
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jekyll (>= 2.0)
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mercenary (~> 0.3.2)
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@ -100,6 +103,7 @@ DEPENDENCIES
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jekyll-redirect-from
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jekyll-sitemap
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jekyll-time-to-read
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nokogiri
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octopress (~> 3.0)
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octopress-include-tag
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pry
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@ -113,4 +117,4 @@ RUBY VERSION
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ruby 2.4.1p111
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BUNDLED WITH
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1.15.4
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1.16.1
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33
plugins/no_follow.rb
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33
plugins/no_follow.rb
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@ -0,0 +1,33 @@
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# Jekyll Auto Nofollow Plugin
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# Automatically adds rel='external nofollow' to outgoing links.
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require 'jekyll'
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require 'nokogiri'
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module Jekyll
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module NoFollow
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def nofollow(content)
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dom = Nokogiri::HTML.fragment(content)
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# Find all links
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dom.css('a').each do |link|
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rel = ['external', 'nofollow']
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# All external links start with 'http', skip when this one does not
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next unless link.get_attribute('href') =~ /\Ahttp/i
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# Play nice with our own links
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next if link.get_attribute('href') =~ /\Ahttps?:\/\/\w*.?home-assistant.io/i
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# Play nice with links that already have a rel attribute set
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rel.unshift(link.get_attribute('rel'))
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# Add rel attribute to link
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link.set_attribute('rel', rel.join(' ').strip)
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end
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dom.to_s
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end
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end
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end
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Liquid::Template.register_filter(Jekyll::NoFollow)
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@ -24,7 +24,7 @@ layout: compress
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<div class="grid__item two-thirds lap-one-whole palm-one-whole">
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{% endif %}
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{{ content }}
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{{ content | nofollow }}
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</div>
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