Class: EmojiRegex::Fetcher

Inherits:
Object
  • Object
show all
Defined in:
lib/emoji-regex/fetcher.rb

Constant Summary collapse

SOURCE = 
'https://www.unicode.org/Public/emoji/6.0/emoji-data.txt'.freeze

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Fetcher

Returns a new instance of Fetcher.



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# File 'lib/emoji-regex/fetcher.rb', line 7

def initialize
  @emoji_file_path = File.join(Dir.tmpdir, 'sorted_emoji.txt')
end

Instance Method Details

#save ⇒ Object Also known as: update 



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# File 'lib/emoji-regex/fetcher.rb', line 11

def save
  emoji_file = open(SOURCE, &:read)
  emoji_code_lines = emoji_file.split("\n").map { |x| x.split(' ;')[0] }.compact.map(&:rstrip)

  emoji_codes = emoji_code_lines.each_with_object([]) do |line, result|
    case line
    when /^#/
      nil
    when /^(0023|002A|0030)/
      nil
    when /^.{4,5}\.\./
      start_code_hex, end_code_hex = line.split('..')
      base_10_code_range = (start_code_hex.to_i(16)..end_code_hex.to_i(16))
      hex_codes = base_10_code_range.to_a.map { |base_10_code| base_10_code.to_s(16).rjust(4, '0').upcase }
      hex_codes.each { |code| result << code }
    else
      result << line
    end
  end

  File.open(@emoji_file_path, 'w') do |f|
    f << emoji_codes.uniq.join("\n")
  end
end

#saved_path ⇒ Object 



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# File 'lib/emoji-regex/fetcher.rb', line 38

def saved_path
  save unless File.exist?(@emoji_file_path)

  @emoji_file_path
end