jekyll-seo-tag/lib/jekyll-seo-tag.rb

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require "jekyll"
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require "jekyll-seo-tag/version"
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module Jekyll
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"
autoload :Drop, "jekyll-seo-tag/drop"
autoload :Filters, "jekyll-seo-tag/filters"
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attr_accessor :context
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# 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+(?\!-)!
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def initialize(_tag_name, text, _tokens)
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super
@text = text
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end
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def render(context)
@context = context
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SeoTag.template.render!(payload, info)
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end
private
def options
{
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"version" => Jekyll::SeoTag::VERSION,
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"title" => title?,
}
end
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def payload
# site_payload is an instance of UnifiedPayloadDrop. See https://git.io/v5ajm
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Jekyll::Utils.deep_merge_hashes(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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end
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def drop
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@drop ||= Jekyll::SeoTag::Drop.new(@text, @context)
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end
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def info
{
:registers => context.registers,
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:filters => [Jekyll::Filters],
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}
end
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class << self
def template
@template ||= Liquid::Template.parse template_contents
end
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private
def template_contents
@template_contents ||= begin
File.read(template_path).gsub(MINIFY_REGEX, "")
end
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end
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def template_path
@template_path ||= begin
File.expand_path "./template.html", File.dirname(__FILE__)
end
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end
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end
end
end
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Liquid::Template.register_tag("seo", Jekyll::SeoTag)