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# frozen_string_literal: true
def gen_border(codepoint)
input = Rails.root.join('public', 'emoji', "#{codepoint}.svg")
dest = Rails.root.join('public', 'emoji', "#{codepoint}_border.svg")
doc = File.open(input) { |f| Nokogiri::XML(f) }
svg = doc.at_css('svg')
if svg.key?('viewBox')
view_box = svg['viewBox'].split(' ').map(&:to_i)
view_box[0] -= 2
view_box[1] -= 2
view_box[2] += 4
view_box[3] += 4
svg['viewBox'] = view_box.join(' ')
end
g = Nokogiri::XML::Node.new 'g', doc
doc.css('svg > *').each do |elem|
border_elem = elem.dup
border_elem.delete('fill')
border_elem['stroke'] = 'white'
border_elem['stroke-linejoin'] = 'round'
border_elem['stroke-width'] = '4px'
g.add_child(border_elem)
end
svg.prepend_child(g)
File.write(dest, doc.to_xml)
puts "Wrote bordered #{codepoint}.svg to #{dest}!"
end
def codepoints_to_filename(codepoints)
codepoints.downcase.gsub(/\A[0]+/, '').tr(' ', '-')
end
def codepoints_to_unicode(codepoints)
if codepoints.include?(' ')
codepoints.split(' ').map(&:hex).pack('U*')
else
[codepoints.hex].pack('U')
end
end
namespace :emojis do
desc 'Generate a unicode to filename mapping'
task :generate do
source = 'http://www.unicode.org/Public/emoji/12.0/emoji-test.txt'
codes = []
dest = Rails.root.join('app', 'javascript', 'mastodon', 'features', 'emoji', 'emoji_map.json')
puts "Downloading emojos from source... (#{source})"
HTTP.get(source).to_s.split("\n").each do |line|
next if line.start_with? '#'
parts = line.split(';').map(&:strip)
next if parts.size < 2
codes << [parts[0], parts[1].start_with?('fully-qualified')]
end
grouped_codes = codes.reduce([]) do |agg, current|
if current[1]
agg << [current[0]]
else
agg.last << current[0]
agg
end
end
existence_maps = grouped_codes.map { |c| c.index_with { |cc| File.exist?(Rails.root.join('public', 'emoji', codepoints_to_filename(cc) + '.svg')) } }
map = {}
existence_maps.each do |group|
existing_one = group.key(true)
next if existing_one.nil?
group.each_key do |key|
map[codepoints_to_unicode(key)] = codepoints_to_filename(existing_one)
end
end
map = map.sort { |a, b| a[0].size <=> b[0].size }.to_h
File.write(dest, Oj.dump(map))
puts "Wrote emojo to destination! (#{dest})"
end
desc 'Generate emoji variants with white borders'
task :generate_borders do
src = Rails.root.join('app', 'javascript', 'mastodon', 'features', 'emoji', 'emoji_map.json')
emojis = '🎱🐜⚫🖤⬛◼️◾◼️✒️▪️💣🎳📷📸♣️🕶️✴️🔌💂‍♀️📽️🍳🦍💂🔪🕳️🕹️🕋🖊️🖋️💂‍♂️🎤🎓🎥🎼♠️🎩🦃📼📹🎮🐃🏴🐞🕺📱📲👽⚾🐔☁️💨🕊️👀🍥👻🐐❕❔⛸️🌩️🔊🔇📃🌧️🐏🍚🍙🐓🐑💀☠️🌨️🔉🔈💬💭🏐🏳️⚪⬜◽◻️▫️'
map = Oj.load(File.read(src))
emojis.each_grapheme_cluster do |emoji|
gen_border map[emoji]
end
end
end