Use the same emoji data on the frontend and backend (#4284)

* Use the same emoji data on the frontend and backend

* Move emoji.json to repository, add tests

This way you don't need to install node dependencies if you only
want to run Ruby code
This commit is contained in:
Eugen Rochko 2017-07-21 04:27:40 +02:00 committed by GitHub
parent c1bc5e14eb
commit a390abdefb
5 changed files with 66 additions and 6 deletions

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@ -28,7 +28,6 @@ gem 'devise', '~> 4.2'
gem 'devise-two-factor', '~> 3.0'
gem 'doorkeeper', '~> 4.2'
gem 'fast_blank', '~> 1.0'
gem 'gemoji', '~> 3.0'
gem 'goldfinger', '~> 1.2'
gem 'hiredis', '~> 0.6'
gem 'redis-namespace', '~> 1.5'

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@ -1,19 +1,24 @@
# frozen_string_literal: true
module EmojiHelper
EMOJI_PATTERN = /(?<=[^[:alnum:]:]|\n|^):([\w+-]+):(?=[^[:alnum:]:]|$)/x
def emojify(text)
return text if text.blank?
text.gsub(EMOJI_PATTERN) do |match|
emoji = Emoji.find_by_alias($1) # rubocop:disable Rails/DynamicFindBy,Style/PerlBackrefs
text.gsub(emoji_pattern) do |match|
emoji = Emoji.instance.unicode($1) # rubocop:disable Style/PerlBackrefs
if emoji
emoji.raw
emoji
else
match
end
end
end
def emoji_pattern
@emoji_pattern ||=
/(?<=[^[:alnum:]:]|\n|^)
(#{Emoji.instance.names.map { |name| Regexp.escape(name) }.join('|')})
(?=[^[:alnum:]:]|$)/x
end
end

40
app/lib/emoji.rb Normal file
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@ -0,0 +1,40 @@
# frozen_string_literal: true
require 'singleton'
class Emoji
include Singleton
def initialize
data = Oj.load(File.open(File.join(Rails.root, 'lib', 'assets', 'emoji.json')))
@map = {}
data.each do |_, emoji|
keys = [emoji['shortname']] + emoji['aliases']
unicode = codepoint_to_unicode(emoji['unicode'])
keys.each do |key|
@map[key] = unicode
end
end
end
def unicode(shortcode)
@map[shortcode]
end
def names
@map.keys
end
private
def codepoint_to_unicode(codepoint)
if codepoint.include?('-')
codepoint.split('-').map(&:hex).pack('U')
else
[codepoint.hex].pack('U')
end
end
end

1
lib/assets/emoji.json Normal file

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15
spec/lib/emoji_spec.rb Normal file
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@ -0,0 +1,15 @@
require 'rails_helper'
RSpec.describe Emoji do
describe '#unicode' do
it 'returns a unicode for a shortcode' do
expect(Emoji.instance.unicode(':joy:')).to eq '😂'
end
end
describe '#names' do
it 'returns an array' do
expect(Emoji.instance.names).to be_an Array
end
end
end