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128 lines
3.5 KiB
Ruby
128 lines
3.5 KiB
Ruby
EMOJI_LIST_URL = "http://unicode.org/emoji/charts/full-emoji-list.html"
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EMOJI_KEYWORDS_URL = "https://raw.githubusercontent.com/muan/emojilib/master/emojis.json"
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# until MS release the emoji flags, we'll use custom made flags
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WINDOWS_FLAGS = Set.new ["1f1e8_1f1f3", "1f1e9_1f1ea", "1f1ea_1f1f8", "1f1eb_1f1f7", "1f1ec_1f1e7", "1f1ee_1f1f9", "1f1ef_1f1f5", "1f1f0_1f1f7", "1f1f7_1f1fa", "1f1fa_1f1f8"]
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desc "update emoji images"
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task "emoji:update" => :environment do
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emojis = {}
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puts "Loading local emoji database..."
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db = JSON.parse(File.read("lib/emoji/db.json"))
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db["emojis"].each do |e|
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emojis[e["code"].tr("-", "_")] = { name: e["name"] }
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end
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aliases = db["aliases"].to_h
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puts "Enhancing emoji database with emojilib keywords..."
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keywords = JSON.parse(open(EMOJI_KEYWORDS_URL).read)
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keywords.keys.each do |k|
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next unless char = keywords[k]["char"].presence
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code = char.codepoints
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.map { |c| c.to_s(16).rjust(4, "0") }
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.join("_")
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.downcase
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.gsub(/_fe0f$/, "")
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emojis[code] ||= { name: k }
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end
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puts "Retrieving remote emoji list..."
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list = open(EMOJI_LIST_URL).read
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puts "Parsing remote emoji list..."
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doc = Nokogiri::HTML(list)
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doc.css("tr").each do |row|
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cells = row.css("td")
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next if cells.size == 0
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code = cells[1].at_css("a")["name"]
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unless emojis[code]
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code = code.gsub(/_fe0f/, "")
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next unless emojis[code]
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end
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apple = cell_to_image(cells[4])
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google = cell_to_image(cells[5])
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twitter = cell_to_image(cells[6])
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one = cell_to_image(cells[7])
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if WINDOWS_FLAGS.include?(code)
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windows = custom_windows_flag(code)
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else
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windows = cell_to_image(cells[11])
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end
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if apple.blank? || google.blank? || twitter.blank? || one.blank? || windows.blank?
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emojis.delete(code)
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next
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end
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emojis[code][:apple] = apple
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emojis[code][:google] = google
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emojis[code][:twitter] = twitter
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emojis[code][:one] = one
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emojis[code][:windows] = windows
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end
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puts "Writing emojis..."
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write_emojis(emojis, aliases, :apple, "apple")
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write_emojis(emojis, aliases, :google, "google")
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write_emojis(emojis, aliases, :twitter, "twitter")
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write_emojis(emojis, aliases, :one, "emoji_one")
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write_emojis(emojis, aliases, :windows, "win10")
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puts "Updating db.json..."
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db = {
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"emojis" => emojis.keys.map { |k| { "code" => k.tr("_", "-"), "name" => emojis[k][:name] } },
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"aliases" => aliases,
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}
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File.write("lib/emoji/db.json", JSON.pretty_generate(db))
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puts "Done!"
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end
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def cell_to_image(cell)
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return unless img = cell.at_css("img")
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Base64.decode64(img["src"][/base64,(.+)$/, 1])
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end
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def custom_windows_flag(code)
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name = code.upcase.tr("_", "-")
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open("https://github.com/discourse/discourse-emoji-extractor/raw/master/win10/72x72/windows_#{name}.png").read
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end
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def write_emojis(emojis, aliases, style, folder)
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path = "public/images/emoji/#{folder}"
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# Uncomment to recreate all emojis
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# FileUtils.rm_f Dir.glob("#{path}/*")
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puts folder
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emojis.values.each do |emoji|
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next if emoji[style].nil?
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write_emoji("#{path}/#{emoji[:name]}.png", emoji[style])
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if aliases[emoji[:name]]
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aliases[emoji[:name]].each do |new_name|
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write_emoji("#{path}/#{new_name}.png", emoji[style])
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end
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end
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end
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puts
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end
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def write_emoji(path, emoji)
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open(path, "wb") { |f| f << emoji }
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`pngout #{path}`
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putc "."
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ensure
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raise "Failed to write emoji: #{path}" if File.exists?(path) && !File.size?(path)
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end
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