lib/prawn/emoji/index.rb in prawn-emoji-2.0.0 vs lib/prawn/emoji/index.rb in prawn-emoji-2.0.1

@@ -1,19 +1,34 @@
+# frozen_string_literal: true
+
 module Prawn
   module Emoji
     class Index
-      def unicodes
-        @unicodes ||= YAML.load Emoji.root.join('emoji', 'index.yml').read
+      EXCLUSION_CHARS = '1234567890#*'.freeze
+
+      attr_reader :codepoints
+
+      def initialize
+        @codepoints = load_emoji_codepoints
       end
 
-      def unicodes_regexp
-        @unicodes_regexp ||= build_unicodes_regexp
+      def to_regexp
+        @regexp ||= build_regexp
       end
 
       private
 
-      def build_unicodes_regexp
-        Regexp.compile unicodes.map { |unicode| "\\u{#{unicode.split('-').join(' ')}}" }.join('|')
+      def build_regexp
+        Regexp.new(codepoints.map { |codepoint| unicode(codepoint) }.join('|'))
+      end
+
+      def load_emoji_codepoints
+        codepoints = YAML.load_file(Emoji.root.join('emoji', 'index.yml'))
+        codepoints.reject { |codepoint| /#{unicode(codepoint)}/ =~ EXCLUSION_CHARS }
+      end
+
+      def unicode(codepoint)
+        "\\u{#{codepoint.split('-').join(' ')}}"
       end
     end
   end
 end