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Add YouTube plugin for the site (#2236)
Signed-off-by: Jonas Rosland <jrosland@vmware.com>
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| # Title: YouTube plugin for Jekyll | ||
| # Description: Liquid tag to generate a YouTube embed. | ||
| # Authors: | ||
| # - Joey Hoer (@joeyhoer | https://joeyhoer.com) | ||
| # | ||
| # Link: https://developers.google.com/youtube/player_parameters#Parameters | ||
| # | ||
| # Syntax: {% youtube [video_id] [width] [height] [query_param:value]... %} | ||
| # | ||
| # Examples: | ||
| # {% youtube dQw4w9WgXcQ %} | ||
| # {% youtube dQw4w9WgXcQ 600 rel:0 modestbranding:1 %} | ||
| # | ||
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| module Jekyll | ||
| class YouTube < Liquid::Tag | ||
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| ## Constants | ||
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| @@ATTRIBUTES = %w( | ||
| autoplay | ||
| cc_load_policy | ||
| color | ||
| controls | ||
| disablekb | ||
| enablejsapi | ||
| end | ||
| fs | ||
| hl | ||
| iv_load_policy | ||
| list | ||
| listType | ||
| loop | ||
| modestbranding | ||
| origin | ||
| playlist | ||
| playsinline | ||
| rel | ||
| showinfo | ||
| start | ||
| widget_referrer | ||
| ) | ||
|
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| @ytid = nil | ||
| @width = '' | ||
| @height = '' | ||
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| def initialize(tag_name, markup, tokens) | ||
| @content=markup | ||
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| @config = {} | ||
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| # Override configuration with values defined within _config.yml | ||
| if Jekyll.configuration({}).has_key?('youtube') | ||
| config = Jekyll.configuration({})['youtube'] | ||
| override_config(config) | ||
| end | ||
|
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| params = markup.split | ||
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| if params.shift =~ /(?:(?:https?:\/\/)?(?:www.)?(?:youtube.com\/(?:embed\/|watch\?v=)|youtu.be\/)?(\S+)(?:\?rel=\d)?)/i | ||
| @video_id = $1 | ||
| end | ||
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| @width = (params[0].to_i > 0) ? params.shift.to_i : 560 | ||
| @height = (params[0].to_i > 0) ? params.shift.to_i : (@width / 16.0 * 9).ceil | ||
|
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| if params.size > 0 | ||
| # Override configuration with parameters defined within Liquid tag | ||
| config = {} # Reset local config | ||
| params.each do |param| | ||
| param = param.gsub /\s+/, '' # Remove whitespaces | ||
| key, value = param.split(':',2) # Split first occurrence of ':' only | ||
| config["#{key}"] = value | ||
| end | ||
| override_config(config) | ||
| end | ||
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| super | ||
| end | ||
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| def override_config(config) | ||
| config.each{ |key,value| @config[key] = value } | ||
| end | ||
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| def render(context) | ||
| ouptut = super | ||
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| if !@video_id | ||
| @video_id = "#{context[@content.strip]}" | ||
| end | ||
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| if @video_id | ||
| template_path = File.join(Dir.pwd, "_includes", "youtube.html") | ||
| if File.exist?(template_path) | ||
| site = context.registers[:site] | ||
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| partial = File.read(template_path) | ||
| template = Liquid::Template.parse(partial) | ||
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| template.render!(({"video_id" => @video_id, "width" => @width, "height" => @height, "query_string" => render_query_string()}).merge(site.site_payload)) | ||
| else | ||
| "<iframe width=\"#{@width}\" height=\"#{@height}\" src=\"https://www.youtube.com/embed/#{@video_id}#{render_query_string()}\" frameborder=\"0\" allowfullscreen></iframe>" | ||
| end | ||
| else | ||
| puts "YouTube Embed: Error processing input, expected syntax {% youtube video_id [width] [height] [data-attr:value] %}" | ||
| end | ||
| end | ||
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| def render_query_string | ||
| result = [] | ||
| @config.each do |key,value| | ||
| if @@ATTRIBUTES.include?(key.to_s) | ||
| result << "#{key}=#{value}" | ||
| end | ||
| end | ||
| return (!(result.empty?) ? '?' : '') + result.join('&') | ||
| end | ||
|
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| end | ||
| end | ||
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| Liquid::Template.register_tag('youtube', Jekyll::YouTube) |
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