class Emoji # update this to clear the cache EMOJI_VERSION = "5" FITZPATRICK_SCALE ||= [ "1f3fb", "1f3fc", "1f3fd", "1f3fe", "1f3ff" ] include ActiveModel::SerializerSupport attr_reader :path attr_accessor :name, :url def initialize(path = nil) @path = path end def self.all Discourse.cache.fetch(cache_key("all_emojis")) { standard | custom } end def self.standard Discourse.cache.fetch(cache_key("standard_emojis")) { load_standard } end def self.aliases Discourse.cache.fetch(cache_key("aliases_emojis")) { db['aliases'] } end def self.custom Discourse.cache.fetch(cache_key("custom_emojis")) { load_custom } end def self.tonable_emojis Discourse.cache.fetch(cache_key("tonable_emojis")) { db['tonableEmojis'] } end def self.exists?(name) Emoji[name].present? end def self.[](name) Emoji.custom.detect { |e| e.name == name } end def self.create_from_db_item(emoji) name = emoji["name"] filename = emoji['filename'] || name Emoji.new.tap do |e| e.name = name e.url = Emoji.url_for(filename) end end def self.url_for(name) "#{Discourse.base_uri}/images/emoji/#{SiteSetting.emoji_set}/#{name}.png?v=#{EMOJI_VERSION}" end def self.cache_key(name) "#{name}:v#{EMOJI_VERSION}:#{Plugin::CustomEmoji.cache_key}" end def self.clear_cache %w{custom standard aliases all tonable}.each do |key| Discourse.cache.delete(cache_key("#{key}_emojis")) end end def self.db_file "#{Rails.root}/lib/emoji/db.json" end def self.db @db ||= File.open(db_file, "r:UTF-8") { |f| JSON.parse(f.read) } end def self.load_standard db['emojis'].map { |e| Emoji.create_from_db_item(e) } end def self.load_custom result = [] CustomEmoji.includes(:upload).order(:name).each do |emoji| result << Emoji.new.tap do |e| e.name = emoji.name e.url = emoji.upload&.url end end Plugin::CustomEmoji.emojis.each do |name, url| result << Emoji.new.tap do |e| e.name = name url = (Discourse.base_uri + url) if url[/^\/[^\/]/] e.url = url end end result end def self.base_directory "public#{base_url}" end def self.base_url db = RailsMultisite::ConnectionManagement.current_db "#{Discourse.base_uri}/uploads/#{db}/_emoji" end def self.replacement_code(code) hexes = code.split('-'.freeze).map!(&:hex) # Don't replace digits, letters and some symbols hexes.pack("U*".freeze) if hexes[0] > 255 end def self.unicode_replacements return @unicode_replacements if @unicode_replacements @unicode_replacements = {} is_tonable_emojis = Emoji.tonable_emojis fitzpatrick_scales = FITZPATRICK_SCALE.map { |scale| scale.to_i(16) } db['emojis'].each do |e| name = e['name'] next if name == 'tm'.freeze code = replacement_code(e['code']) next unless code @unicode_replacements[code] = name if is_tonable_emojis.include?(name) fitzpatrick_scales.each_with_index do |scale, index| toned_code = code.codepoints.insert(1, scale).pack("U*".freeze) @unicode_replacements[toned_code] = "#{name}:t#{index + 2}" end end end @unicode_replacements["\u{2639}"] = 'frowning' @unicode_replacements["\u{263A}"] = 'slight_smile' @unicode_replacements["\u{263B}"] = 'slight_smile' @unicode_replacements["\u{2661}"] = 'heart' @unicode_replacements["\u{2665}"] = 'heart' @unicode_replacements end def self.unicode_unescape(string) string.each_char.map do |c| if str = unicode_replacements[c] ":#{str}:" else c end end.join end def self.gsub_emoji_to_unicode(str) if str str.gsub(/:([\w\-+]*(?::t\d)?):/) { |name| Emoji.lookup_unicode($1) || name } end end def self.lookup_unicode(name) @reverse_map ||= begin map = {} is_tonable_emojis = Emoji.tonable_emojis db['emojis'].each do |e| next if e['name'] == 'tm' code = replacement_code(e['code']) next unless code map[e['name']] = code if is_tonable_emojis.include?(e['name']) FITZPATRICK_SCALE.each_with_index do |scale, index| toned_code = (code.codepoints.insert(1, scale.to_i(16))).pack("U*") map["#{e['name']}:t#{index + 2}"] = toned_code end end end Emoji.aliases.each do |key, alias_names| next unless alias_code = map[key] alias_names.each do |alias_name| map[alias_name] = alias_code end end map end @reverse_map[name] end def self.unicode_replacements_json @unicode_replacements_json ||= unicode_replacements.to_json end end