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discourse/lib/svg_sprite/svg_sprite.rb

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Ruby
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# frozen_string_literal: true
module SvgSprite
SVG_ICONS ||= Set.new([
"adjust",
"ambulance",
"anchor",
"angle-double-down",
"angle-double-up",
"angle-double-right",
"angle-double-left",
"angle-down",
"angle-right",
"angle-up",
"archive",
"arrow-down",
"arrow-left",
"arrow-up",
"arrows-alt-h",
"arrows-alt-v",
"at",
"asterisk",
"backward",
"ban",
"bars",
"bed",
"bell",
"bell-slash",
"bold",
"book",
"book-reader",
"bookmark",
"briefcase",
"calendar-alt",
"caret-down",
"caret-left",
"caret-right",
"caret-up",
"certificate",
"chart-bar",
"chart-pie",
"check",
"check-circle",
"check-square",
"chevron-down",
"chevron-left",
"chevron-right",
"chevron-up",
"circle",
"code",
"cog",
"columns",
"comment",
"compress",
"copy",
"crosshairs",
"cube",
"desktop",
"discourse-compress",
"discourse-expand",
"download",
"ellipsis-h",
"ellipsis-v",
"envelope",
"envelope-square",
"exchange-alt",
"exclamation-circle",
"exclamation-triangle",
"external-link-alt",
"fab-android",
"fab-apple",
"fab-chrome",
"fab-discord",
"fab-discourse",
"fab-facebook-square",
"fab-facebook",
"fab-github",
"fab-google-plus-square",
"fab-instagram",
"fab-linux",
"fab-twitter",
"fab-twitter-square",
"fab-windows",
"far-bell",
"far-bell-slash",
"far-calendar-plus",
"far-chart-bar",
"far-check-square",
"far-circle",
"far-clipboard",
"far-clock",
"far-comment",
"far-copyright",
"far-dot-circle",
"far-edit",
"far-envelope",
"far-eye",
"far-eye-slash",
"far-file-alt",
"far-frown",
"far-heart",
"far-image",
"far-list-alt",
"far-moon",
"far-smile",
"far-square",
"far-sun",
"far-thumbs-down",
"far-thumbs-up",
"far-trash-alt",
"fast-backward",
"fast-forward",
"file",
"file-alt",
"filter",
"flag",
"folder",
"folder-open",
"forward",
"gavel",
"globe",
"globe-americas",
"hand-point-right",
"hands-helping",
"heading",
"heart",
"home",
"info-circle",
"italic",
"key",
"link",
"list",
"list-ol",
"list-ul",
"lock",
"magic",
"map-marker-alt",
"microphone-slash",
"minus",
"minus-circle",
"mobile-alt",
"paint-brush",
"paper-plane",
"pencil-alt",
"play",
"plug",
"plus",
"plus-circle",
"plus-square",
"power-off",
"puzzle-piece",
"question",
"question-circle",
"quote-left",
"quote-right",
"random",
"redo",
"reply",
"rocket",
"search",
"share",
"shield-alt",
"shower",
"sign-in-alt",
"sign-out-alt",
"signal",
"step-backward",
"step-forward",
"stream",
"sync",
"table",
"tag",
"tasks",
"thermometer-three-quarters",
"thumbs-down",
"thumbs-up",
"thumbtack",
"times",
"times-circle",
"trash-alt",
"tv",
"undo",
"unlink",
"unlock",
"unlock-alt",
"upload",
"user",
"user-edit",
"user-plus",
"user-secret",
"user-shield",
"user-times",
"users",
"wrench"
])
FA_ICON_MAP = { 'far fa-' => 'far-', 'fab fa-' => 'fab-', 'fas fa-' => '', 'fa-' => '' }
CORE_SVG_SPRITES = Dir.glob("#{Rails.root}/vendor/assets/svg-icons/**/*.svg")
THEME_SPRITE_VAR_NAME = "icons-sprite"
def self.custom_svg_sprites(theme_ids = [])
custom_sprite_paths = Dir.glob("#{Rails.root}/plugins/*/svg-icons/*.svg")
ThemeField.where(type_id: ThemeField.types[:theme_upload_var], name: THEME_SPRITE_VAR_NAME, theme_id: Theme.transform_ids(theme_ids))
.pluck(:upload_id).each do |upload_id|
upload = Upload.find(upload_id) rescue nil
if Discourse.store.external?
external_copy = Discourse.store.download(upload) rescue nil
original_path = external_copy.try(:path)
else
original_path = Discourse.store.path_for(upload)
end
custom_sprite_paths << original_path if original_path.present?
end
custom_sprite_paths
end
def self.all_icons(theme_ids = [])
get_set_cache("icons_#{Theme.transform_ids(theme_ids).join(',')}") do
Set.new()
.merge(settings_icons)
.merge(plugin_icons)
.merge(badge_icons)
.merge(group_icons)
.merge(theme_icons(theme_ids))
.merge(custom_icons(theme_ids))
.delete_if { |i| i.blank? || i.include?("/") }
.map! { |i| process(i.dup) }
.merge(SVG_ICONS)
.sort
end
end
def self.version(theme_ids = [])
get_set_cache("version_#{Theme.transform_ids(theme_ids).join(',')}") do
Digest::SHA1.hexdigest(all_icons(theme_ids).join('|'))
end
end
def self.path(theme_ids = [])
"/svg-sprite/#{Discourse.current_hostname}/svg-#{theme_ids&.join(",")}-#{version(theme_ids)}.js"
end
def self.expire_cache
cache&.clear
end
def self.sprite_sources(theme_ids)
CORE_SVG_SPRITES | custom_svg_sprites(theme_ids)
end
def self.bundle(theme_ids = [])
icons = all_icons(theme_ids)
svg_subset = """<!--
Discourse SVG subset of Font Awesome Free by @fontawesome - https://fontawesome.com
License - https://fontawesome.com/license/free (Icons: CC BY 4.0, Fonts: SIL OFL 1.1, Code: MIT License)
-->
<svg xmlns='http://www.w3.org/2000/svg' style='display: none;'>
""".dup
sprite_sources(theme_ids).each do |fname|
svg_file = Nokogiri::XML(File.open(fname)) do |config|
config.options = Nokogiri::XML::ParseOptions::NOBLANKS
end
svg_filename = "#{File.basename(fname, ".svg")}"
svg_file.css('symbol').each do |sym|
icon_id = prepare_symbol(sym, svg_filename)
if icons.include? icon_id
sym.attributes['id'].value = icon_id
sym.css('title').each(&:remove)
svg_subset << sym.to_xml
end
end
end
svg_subset << '</svg>'
end
def self.search(searched_icon)
searched_icon = process(searched_icon.dup)
sprite_sources([SiteSetting.default_theme_id]).each do |fname|
svg_file = Nokogiri::XML(File.open(fname))
svg_filename = "#{File.basename(fname, ".svg")}"
svg_file.css('symbol').each do |sym|
icon_id = prepare_symbol(sym, svg_filename)
if searched_icon == icon_id
sym.attributes['id'].value = icon_id
sym.css('title').each(&:remove)
return sym.to_xml
end
end
end
false
end
# For use in no_ember .html.erb layouts
def self.raw_svg(name)
get_set_cache("raw_svg_#{name}") do
symbol = search(name)
break "" unless symbol
symbol = Nokogiri::XML(symbol).children.first
symbol.name = "svg"
<<~HTML
<svg class="fa d-icon svg-icon svg-node" aria-hidden="true">#{symbol}</svg>
HTML
end.html_safe
end
def self.theme_sprite_variable_name
THEME_SPRITE_VAR_NAME
end
def self.prepare_symbol(symbol, svg_filename)
icon_id = symbol.attr('id')
case svg_filename
when "regular"
icon_id = icon_id.prepend('far-')
when "brands"
icon_id = icon_id.prepend('fab-')
end
icon_id
end
def self.settings_icons
# includes svg_icon_subset and any settings containing _icon (incl. plugin settings)
site_setting_icons = []
SiteSetting.settings_hash.select do |key, value|
if key.to_s.include?("_icon") && String === value
site_setting_icons |= value.split('|')
end
end
site_setting_icons
end
def self.plugin_icons
DiscoursePluginRegistry.svg_icons
end
def self.badge_icons
Badge.pluck(:icon).uniq
end
def self.group_icons
Group.where("flair_url LIKE '%fa-%'").pluck(:flair_url).uniq
end
def self.theme_icons(theme_ids)
theme_icon_settings = []
# Need to load full records for default values
Theme.where(id: Theme.transform_ids(theme_ids)).each do |theme|
settings = theme.cached_settings.each do |key, value|
if key.to_s.include?("_icon") && String === value
theme_icon_settings |= value.split('|')
end
end
end
theme_icon_settings
end
def self.custom_icons(theme_ids)
# Automatically register icons in sprites added via themes or plugins
icons = []
custom_svg_sprites(theme_ids).each do |fname|
svg_file = Nokogiri::XML(File.open(fname))
svg_file.css('symbol').each do |sym|
icons << sym.attributes['id'].value if sym.attributes['id'].present?
end
end
icons
end
def self.fa4_shim_file
"#{Rails.root}/lib/svg_sprite/fa4-renames.json"
end
def self.fa4_to_fa5_names
@db ||= File.open(fa4_shim_file, "r:UTF-8") { |f| JSON.parse(f.read) }
end
def self.process(icon_name)
icon_name.strip!
FA_ICON_MAP.each { |k, v| icon_name.sub!(k, v) }
fa4_to_fa5_names[icon_name] || icon_name
end
def self.get_set_cache(key)
cache[key] ||= yield
end
def self.cache
@cache ||= DistributedCache.new('svg_sprite')
end
end
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