92 lines
2.8 KiB
Ruby
92 lines
2.8 KiB
Ruby
# adapted from
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# - https://github.com/jekyll/jekyll/blob/master/lib/jekyll/tags/post_url.rb
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module Jekyll
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module Tags
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class PostComparer
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MATCHER = /^(.+\/)*(\d+-\d+-\d+)-(.*)$/
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attr_reader :path, :date, :slug, :name
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def initialize(name)
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@name = name
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all, @path, @date, @slug = *name.sub(/^\//, "").match(MATCHER)
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raise ArgumentError.new("'#{name}' does not contain valid date and/or title.") unless all
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@name_regex = /^#{path}#{date}-#{slug}\.[^.]+/
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end
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def ==(other)
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other.basename.match(@name_regex)
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end
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def deprecated_equality(other)
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date = Utils.parse_date(name, "'#{name}' does not contain valid date and/or title.")
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slug == post_slug(other) &&
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date.year == other.date.year &&
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date.month == other.date.month &&
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date.day == other.date.day
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end
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private
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# Construct the directory-aware post slug for a Jekyll::Post
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#
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# other - the Jekyll::Post
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#
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# Returns the post slug with the subdirectory (relative to _posts)
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def post_slug(other)
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path = other.basename.split("/")[0...-1].join("/")
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if path.nil? || path == ""
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other.data['slug']
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else
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path + '/' + other.data['slug']
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end
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end
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end
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class PostBastUrl < Liquid::Tag
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def initialize(tag_name, post, tokens)
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super
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@orig_post = post.strip
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begin
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@post = PostComparer.new(@orig_post)
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rescue
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raise ArgumentError.new <<-eos
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Could not parse name of post "#{@orig_post}" in tag 'post_url'.
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Make sure the post exists and the name is correct.
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eos
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end
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end
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def render(context)
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site = context.registers[:site]
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site.posts.docs.each do |p|
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if @post == p
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return '/' + context.registers[:site].config['baseurl'] + p.url
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end
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end
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# New matching method did not match, fall back to old method
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# with deprecation warning if this matches
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site.posts.docs.each do |p|
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if @post.deprecated_equality p
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Jekyll::Deprecator.deprecation_message "A call to '{{ post_url #{@post.name} }}' did not match " +
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"a post using the new matching method of checking name " +
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"(path-date-slug) equality. Please make sure that you " +
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"change this tag to match the post's name exactly."
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return '/' + context.registers[:site].config['baseurl'] + p.url
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end
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end
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raise ArgumentError.new <<-eos
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Could not find post "#{@orig_post}" in tag 'post_url'.
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Make sure the post exists and the name is correct.
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eos
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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('post_baseurl', Jekyll::Tags::PostBastUrl) |