Add bin and edit workflow

bin/gems/ttfunk-1.8.0/lib/ttfunk/table/cff/charstrings_index.rb

@@ -0,0 +1,45 @@
+# frozen_string_literal: true
+
+module TTFunk
+  class Table
+    class Cff < TTFunk::Table
+      # CFF Charstrings Index.
+      class CharstringsIndex < TTFunk::Table::Cff::Index
+        # Top dict.
+        # @return [TTFunk::Table::Cff::TopDict]
+        attr_reader :top_dict
+
+        # @overload initialize(top_dict, file, offset, length = nil)
+        #   @param top_dict [TTFunk::Table:Cff::TopDict]
+        #   @param file [TTFunk::File]
+        #   @param offset [Integer]
+        #   @param length [Integer]
+        def initialize(top_dict, *remaining_args)
+          super(*remaining_args)
+          @top_dict = top_dict
+        end
+
+        private
+
+        def decode_item(index, _offset, _length)
+          TTFunk::Table::Cff::Charstring.new(index, top_dict, font_dict_for(index), super)
+        end
+
+        def encode_items(charmap)
+          charmap
+            .reject { |code, mapping| mapping[:new].zero? && !code.zero? }
+            .sort_by { |_code, mapping| mapping[:new] }
+            .map { |(_code, mapping)| items[mapping[:old]] }
+        end
+
+        def font_dict_for(index)
+          # only CID-keyed fonts contain an FD selector and font dicts
+          if top_dict.is_cid_font?
+            fd_index = top_dict.font_dict_selector[index]
+            top_dict.font_index[fd_index]
+          end
+        end
+      end
+    end
+  end
+end