mirror of
https://github.com/discourse/discourse.git
synced 2024-11-22 17:06:31 -06:00
333 lines
8.3 KiB
Ruby
333 lines
8.3 KiB
Ruby
# frozen_string_literal: true
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class Emoji
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# update this to clear the cache
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EMOJI_VERSION = "12"
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FITZPATRICK_SCALE = %w[1f3fb 1f3fc 1f3fd 1f3fe 1f3ff]
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DEFAULT_GROUP = "default"
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include ActiveModel::SerializerSupport
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attr_accessor :name, :url, :tonable, :group, :search_aliases, :created_by
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def self.global_emoji_cache
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@global_emoji_cache ||= DistributedCache.new("global_emoji_cache", namespace: false)
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end
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def self.site_emoji_cache
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@site_emoji_cache ||= DistributedCache.new("site_emoji_cache")
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end
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def self.all
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Discourse.cache.fetch(cache_key("all_emojis")) { standard | custom }
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end
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def self.standard
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Discourse.cache.fetch(cache_key("standard_emojis")) { load_standard }
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end
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def self.allowed
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Discourse.cache.fetch(cache_key("allowed_emojis")) { load_allowed }
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end
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def self.denied
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Discourse.cache.fetch(cache_key("denied_emojis")) { load_denied }
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end
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def self.aliases
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db["aliases"]
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end
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def self.search_aliases
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db["searchAliases"]
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end
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def self.translations
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Discourse.cache.fetch(cache_key("translations_emojis")) { load_translations }
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end
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def self.custom
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Discourse.cache.fetch(cache_key("custom_emojis")) { load_custom }
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end
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def self.tonable_emojis
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db["tonableEmojis"]
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end
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def self.custom?(name)
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name = name.delete_prefix(":").delete_suffix(":")
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Emoji.custom.detect { |e| e.name == name }.present?
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end
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def self.exists?(name)
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Emoji[name].present?
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end
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def self.[](name)
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name = name.delete_prefix(":").delete_suffix(":")
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is_toned = name.match?(/\A.+:t[1-6]\z/)
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normalized_name = name.gsub(/\A(.+):t[1-6]\z/, '\1')
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found_emoji = nil
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[[global_emoji_cache, :standard], [site_emoji_cache, :custom]].each do |cache, list_key|
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found_emoji =
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cache.defer_get_set(normalized_name) do
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[
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Emoji
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.public_send(list_key)
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.detect { |e| e.name == normalized_name && (!is_toned || (is_toned && e.tonable)) },
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]
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end[
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0
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]
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break if found_emoji
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end
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found_emoji
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end
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def self.create_from_db_item(emoji)
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name = emoji["name"]
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return unless group = groups[name]
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filename = emoji["filename"] || name
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Emoji.new.tap do |e|
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e.name = name
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e.tonable = Emoji.tonable_emojis.include?(name)
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e.url = Emoji.url_for(filename)
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e.group = group
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e.search_aliases = search_aliases[name] || []
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end
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end
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def self.url_for(name)
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name = name.delete_prefix(":").delete_suffix(":").gsub(/(.+):t([1-6])/, '\1/\2')
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if SiteSetting.external_emoji_url.blank?
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"#{Discourse.base_path}/images/emoji/#{SiteSetting.emoji_set}/#{name}.png?v=#{EMOJI_VERSION}"
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else
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"#{SiteSetting.external_emoji_url}/#{SiteSetting.emoji_set}/#{name}.png?v=#{EMOJI_VERSION}"
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end
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end
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def self.cache_key(name)
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"#{name}#{cache_postfix}"
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end
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def self.cache_postfix
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":v#{EMOJI_VERSION}:#{Plugin::CustomEmoji.cache_key}"
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end
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def self.clear_cache
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%w[custom standard translations allowed denied all].each do |key|
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Discourse.cache.delete(cache_key("#{key}_emojis"))
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end
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global_emoji_cache.clear
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site_emoji_cache.clear
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end
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def self.groups_file
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@groups_file ||= "#{Rails.root}/lib/emoji/groups.json"
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end
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def self.groups
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@groups ||=
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begin
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groups = {}
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File
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.open(groups_file, "r:UTF-8") { |f| JSON.parse(f.read) }
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.each { |group| group["icons"].each { |icon| groups[icon["name"]] = group["name"] } }
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groups
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end
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end
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def self.db_file
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@db_file ||= "#{Rails.root}/lib/emoji/db.json"
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end
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def self.db
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@db ||= File.open(db_file, "r:UTF-8") { |f| JSON.parse(f.read) }
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end
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def self.load_standard
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db["emojis"].map { |e| Emoji.create_from_db_item(e) }.compact
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end
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def self.load_allowed
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denied_emojis = denied
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all_emojis = load_standard + load_custom
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if denied_emojis.present?
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all_emojis.reject { |e| denied_emojis.include?(e.name) }
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else
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all_emojis
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end
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end
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def self.load_denied
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if SiteSetting.emoji_deny_list.present?
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denied_emoji = SiteSetting.emoji_deny_list.split("|")
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if denied_emoji.size > 0
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denied_emoji.concat(denied_emoji.flat_map { |e| Emoji.aliases[e] }.compact)
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end
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end
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end
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def self.load_custom
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result = []
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if !GlobalSetting.skip_db?
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CustomEmoji
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.includes(:upload)
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.order(:name)
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.each do |emoji|
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result << Emoji.new.tap do |e|
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e.name = emoji.name
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e.url = emoji.upload&.url
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e.group = emoji.group || DEFAULT_GROUP
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e.created_by = User.where(id: emoji.user_id).pick(:username)
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end
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end
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end
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Plugin::CustomEmoji.emojis.each do |group, emojis|
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emojis.each do |name, url|
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result << Emoji.new.tap do |e|
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e.name = name
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url = (Discourse.base_path + url) if url[%r{\A/[^/]}]
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e.url = url
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e.group = group || DEFAULT_GROUP
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end
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end
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end
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result
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end
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def self.load_translations
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db["translations"]
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end
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def self.base_directory
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"public#{base_url}"
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end
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def self.base_url
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db = RailsMultisite::ConnectionManagement.current_db
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"#{Discourse.base_path}/uploads/#{db}/_emoji"
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end
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def self.replacement_code(code)
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code.split("-").map!(&:hex).pack("U*")
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end
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def self.unicode_replacements
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@unicode_replacements ||=
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begin
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replacements = {}
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is_tonable_emojis = Emoji.tonable_emojis
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fitzpatrick_scales = FITZPATRICK_SCALE.map { |scale| scale.to_i(16) }
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db["emojis"].each do |e|
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name = e["name"]
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# special cased as we prefer to keep these as symbols
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next if name == "registered"
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next if name == "copyright"
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next if name == "tm"
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next if name == "left_right_arrow"
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code = replacement_code(e["code"])
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next unless code
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replacements[code] = name
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if is_tonable_emojis.include?(name)
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fitzpatrick_scales.each_with_index do |scale, index|
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toned_code = code.codepoints.insert(1, scale).pack("U*")
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replacements[toned_code] = "#{name}:t#{index + 2}"
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end
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end
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end
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replacements["\u{2639}"] = "frowning"
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replacements["\u{263B}"] = "slight_smile"
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replacements["\u{2661}"] = "heart"
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replacements["\u{2665}"] = "heart"
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replacements
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end
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end
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def self.unicode_unescape(string)
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PrettyText.escape_emoji(string)
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end
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def self.gsub_emoji_to_unicode(str)
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str.gsub(/:([\w\-+]*(?::t\d)?):/) { |name| Emoji.lookup_unicode($1) || name } if str
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end
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def self.lookup_unicode(name)
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return "" if denied&.include?(name)
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@reverse_map ||=
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begin
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map = {}
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is_tonable_emojis = Emoji.tonable_emojis
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db["emojis"].each do |e|
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next if e["name"] == "tm"
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code = replacement_code(e["code"])
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next unless code
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map[e["name"]] = code
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if is_tonable_emojis.include?(e["name"])
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FITZPATRICK_SCALE.each_with_index do |scale, index|
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toned_code = (code.codepoints.insert(1, scale.to_i(16))).pack("U*")
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map["#{e["name"]}:t#{index + 2}"] = toned_code
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end
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end
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end
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Emoji.aliases.each do |key, alias_names|
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next unless alias_code = map[key]
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alias_names.each { |alias_name| map[alias_name] = alias_code }
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end
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map
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end
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@reverse_map[name]
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end
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def self.unicode_replacements_json
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@unicode_replacements_json ||= unicode_replacements.to_json
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end
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def self.codes_to_img(str)
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return if str.blank?
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str =
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str.gsub(/:([\w\-+]*(?::t\d)?):/) do |name|
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code = $1
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if code && Emoji.custom?(code)
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emoji = Emoji[code]
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"<img src=\"#{emoji.url}\" title=\"#{code}\" class=\"emoji\" alt=\"#{code}\" loading=\"lazy\" width=\"20\" height=\"20\">"
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elsif code && Emoji.exists?(code)
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"<img src=\"#{Emoji.url_for(code)}\" title=\"#{code}\" class=\"emoji\" alt=\"#{code}\" loading=\"lazy\" width=\"20\" height=\"20\">"
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else
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name
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end
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end
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end
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def self.sanitize_emoji_name(name)
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name.gsub(/[^a-z0-9]+/i, "_").gsub(/_{2,}/, "_").downcase
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end
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end
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