32 lines
1.1 KiB
Ruby
32 lines
1.1 KiB
Ruby
# Extend Jekyll 'highlight' tag to allow captions.
|
|
# You can use following options:
|
|
# 1. {% highlight <lang> [linenos] [caption] %}
|
|
# 2. {% highlight <lang> [linenos] [caption=some-text_without.duble/quotes] %}
|
|
|
|
module JekyllTagsExtensions
|
|
module HighlightCaption
|
|
def self.prepended(mod)
|
|
syntax = mod.send(:remove_const, :SYNTAX).source.gsub('\\w', '[^[:^graph:]"]')
|
|
mod.const_set(:SYNTAX, Regexp.new(syntax))
|
|
options = mod.send(:remove_const, :OPTIONS_REGEX).source.gsub('\\w', '[^[:^graph:]"]')
|
|
mod.const_set(:OPTIONS_REGEX, Regexp.new(options))
|
|
end
|
|
|
|
def render(*args)
|
|
caption = "<figcaption>"
|
|
caption << "<span class=\"lang\">#{@lang.upcase}#{@highlight_options[:caption] ? ":" : ""}</span>"
|
|
if @highlight_options[:caption].is_a? String
|
|
caption << "<em>#{@highlight_options[:caption]}</em>"
|
|
end
|
|
caption << "</figcaption>"
|
|
|
|
match = super.match('<figure[^>]*>')
|
|
match.pre_match + match.to_s + caption + match.post_match
|
|
end
|
|
end
|
|
end
|
|
|
|
Jekyll::Hooks.register :site, :pre_render do |site|
|
|
Jekyll::Tags::HighlightBlock.prepend JekyllTagsExtensions::HighlightCaption
|
|
end
|