98 lines
2.7 KiB
Ruby
98 lines
2.7 KiB
Ruby
# frozen_string_literal: true
|
|
|
|
require "jekyll"
|
|
require "jekyll-seo-tag/version"
|
|
|
|
module Jekyll
|
|
class SeoTag < Liquid::Tag
|
|
autoload :JSONLD, "jekyll-seo-tag/json_ld"
|
|
autoload :AuthorDrop, "jekyll-seo-tag/author_drop"
|
|
autoload :ImageDrop, "jekyll-seo-tag/image_drop"
|
|
autoload :JSONLDDrop, "jekyll-seo-tag/json_ld_drop"
|
|
autoload :UrlHelper, "jekyll-seo-tag/url_helper"
|
|
autoload :Drop, "jekyll-seo-tag/drop"
|
|
autoload :Filters, "jekyll-seo-tag/filters"
|
|
|
|
attr_accessor :context
|
|
|
|
# Matches all whitespace that follows either
|
|
# 1. A '}', which closes a Liquid tag
|
|
# 2. A '{', which opens a JSON block
|
|
# 3. A '>' followed by a newline, which closes an XML tag or
|
|
# 4. A ',' followed by a newline, which ends a JSON line
|
|
# We will strip all of this whitespace to minify the template
|
|
# We will not strip any whitespace if the next character is a '-'
|
|
# so that we do not interfere with the HTML comment at the
|
|
# very begining
|
|
MINIFY_REGEX = %r!(?<=[{}]|[>,]\n)\s+(?\!-)!
|
|
|
|
def initialize(_tag_name, text, _tokens)
|
|
super
|
|
@text = text
|
|
end
|
|
|
|
def render(context)
|
|
@context = context
|
|
SeoTag.template.render!(payload, info)
|
|
end
|
|
|
|
private
|
|
|
|
def options
|
|
{
|
|
"version" => Jekyll::SeoTag::VERSION,
|
|
"title" => title?,
|
|
}
|
|
end
|
|
|
|
def payload
|
|
# site_payload is an instance of UnifiedPayloadDrop. See https://git.io/v5ajm
|
|
Jekyll::Utils.deep_merge_hashes(context.registers[:site].site_payload, {
|
|
"page" => context.registers[:page],
|
|
"paginator" => context["paginator"],
|
|
"seo_tag" => drop,
|
|
})
|
|
end
|
|
|
|
# The `drop` should not be cached since there is going to be just
|
|
# one instance of this class per `{% seo %}`
|
|
# i.e., if you're going to use `{% seo %}` in two templates that are
|
|
# collectively used by 50 documents, there's just going to be
|
|
# **2 instances of this class** instead of a **100**.
|
|
def drop
|
|
Jekyll::SeoTag::Drop.new(@text, @context)
|
|
end
|
|
|
|
def info
|
|
{
|
|
:registers => context.registers,
|
|
:filters => [Jekyll::Filters],
|
|
}
|
|
end
|
|
|
|
class << self
|
|
def template
|
|
@template ||= Jekyll::Cache.new("jekyll-seo-tag").getset("template") do
|
|
Liquid::Template.parse template_contents
|
|
end
|
|
end
|
|
|
|
private
|
|
|
|
def template_contents
|
|
@template_contents ||= begin
|
|
File.read(template_path).gsub(MINIFY_REGEX, "")
|
|
end
|
|
end
|
|
|
|
def template_path
|
|
@template_path ||= begin
|
|
File.expand_path "./template.html", File.dirname(__FILE__)
|
|
end
|
|
end
|
|
end
|
|
end
|
|
end
|
|
|
|
Liquid::Template.register_tag("seo", Jekyll::SeoTag)
|