discourse/lib/highlight_js.rb

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# frozen_string_literal: true
module HighlightJs
HIGHLIGHTJS_DIR ||= "#{Rails.root}/vendor/assets/javascripts/highlightjs/"
BUNDLED_LANGS = %w(bash c cpp csharp css diff go graphql ini java javascript json kotlin less lua makefile xml markdown objectivec perl php php-template plaintext python python-repl r ruby rust scss shell sql swift typescript vbnet wasm yaml)
def self.languages
langs = Dir.glob(HIGHLIGHTJS_DIR + "languages/*.js").map do |path|
File.basename(path)[0..-8]
end
langs.sort
end
def self.bundle(langs)
result = File.read(HIGHLIGHTJS_DIR + "highlight.min.js")
(langs - BUNDLED_LANGS).each do |lang|
begin
result << "\n" << File.read(HIGHLIGHTJS_DIR + "languages/#{lang}.min.js")
rescue Errno::ENOENT
# no file, don't care
end
end
result
end
def self.version(lang_string)
(@lang_string_cache ||= {})[lang_string] ||=
Digest::SHA1.hexdigest(bundle lang_string.split("|"))
end
def self.path
"/highlight-js/#{Discourse.current_hostname}/#{version SiteSetting.highlighted_languages}.js"
end
end