105 lines
3.2 KiB
Ruby
105 lines
3.2 KiB
Ruby
# frozen_string_literal: true
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require "jekyll"
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require "jekyll-seo-tag/version"
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module Jekyll
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class SeoTag < Liquid::Tag
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autoload :JSONLD, "jekyll-seo-tag/json_ld"
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autoload :AuthorDrop, "jekyll-seo-tag/author_drop"
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autoload :ImageDrop, "jekyll-seo-tag/image_drop"
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autoload :JSONLDDrop, "jekyll-seo-tag/json_ld_drop"
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autoload :UrlHelper, "jekyll-seo-tag/url_helper"
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autoload :Drop, "jekyll-seo-tag/drop"
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autoload :Filters, "jekyll-seo-tag/filters"
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attr_accessor :context
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# Matches all whitespace that follows either
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# 1. A '}', which closes a Liquid tag
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# 2. A '{', which opens a JSON block
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# 3. A '>' followed by a newline, which closes an XML tag or
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# 4. A ',' followed by a newline, which ends a JSON line
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# We will strip all of this whitespace to minify the template
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# We will not strip any whitespace if the next character is a '-'
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# so that we do not interfere with the HTML comment at the
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# very begining
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MINIFY_REGEX = %r!(?<=[{}]|[>,]\n)\s+(?\!-)!.freeze
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def initialize(_tag_name, text, _tokens)
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super
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@text = text
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end
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def render(context)
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@context = context
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SeoTag.template.render!(payload, info)
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end
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private
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def options
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{
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"version" => Jekyll::SeoTag::VERSION,
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"title" => title?,
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}
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end
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def payload
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# site_payload is an instance of UnifiedPayloadDrop. See https://git.io/v5ajm
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Jekyll::Utils.deep_merge_hashes(
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context.registers[:site].site_payload,
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"page" => context.registers[:page],
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"paginator" => context["paginator"],
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"seo_tag" => drop
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)
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end
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def drop
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# TODO: Modify following comment once Jekyll 4.0 ships.
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# ------------------------------------------------------------------------------------------
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# Jekyll 4.0 is probably going to cache parsed Liquid Templates which is going to break the
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# rendered output from this tag since there's going to be just a single instance of this
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# class per {% seo %} in a template, (especially when the tag is used as part of an include).
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# -------------------------------------------------------------------------------------------
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#
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# FIXME: Switch to using `if Gem::Version.new(Jekyll::VERSION) >= Gem::Version.new("4.0.0")`
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# once Jekyll 4.0 ships.
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if context.registers[:site].liquid_renderer.respond_to?(:cache)
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Jekyll::SeoTag::Drop.new(@text, @context)
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else
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@drop ||= Jekyll::SeoTag::Drop.new(@text, @context)
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end
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end
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def info
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{
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:registers => context.registers,
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:filters => [Jekyll::Filters],
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}
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end
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class << self
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def template
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@template ||= Liquid::Template.parse template_contents
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end
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private
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def template_contents
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@template_contents ||= begin
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File.read(template_path).gsub(MINIFY_REGEX, "")
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end
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end
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def template_path
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@template_path ||= begin
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File.expand_path "./template.html", File.dirname(__FILE__)
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end
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end
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end
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end
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end
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Liquid::Template.register_tag("seo", Jekyll::SeoTag)
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