Add bin and edit workflow

bin/gems/ttfunk-1.8.0/lib/ttfunk/table/vorg.rb

@@ -0,0 +1,82 @@
+# frozen_string_literal: true
+
+require_relative '../table'
+
+module TTFunk
+  class Table
+    # Vertical Origin (`VORG`) table.
+    class Vorg < Table
+      # Table tag.
+      TAG = 'VORG'
+
+      # Table major version.
+      # @return [Integer]
+      attr_reader :major_version
+
+      # Table minor version.
+      # @return [Integer]
+      attr_reader :minor_version
+
+      # The default y coordinate of a glyph’s vertical origin.
+      # @return [Integer]
+      attr_reader :default_vert_origin_y
+
+      # Number of vertical origin metrics.
+      # @return [Integer]
+      attr_reader :count
+
+      # Encode table.
+      #
+      # @return [String]
+      def self.encode(vorg)
+        return unless vorg
+
+        ''.b.tap do |table|
+          table << [
+            vorg.major_version, vorg.minor_version,
+            vorg.default_vert_origin_y, vorg.count,
+          ].pack('n*')
+
+          vorg.origins.each_pair do |glyph_id, vert_origin_y|
+            table << [glyph_id, vert_origin_y].pack('n*')
+          end
+        end
+      end
+
+      # Get vertical origina for glyph by ID.
+      #
+      # @param glyph_id [Integer]
+      # @return [Integer]
+      def for(glyph_id)
+        @origins.fetch(glyph_id, default_vert_origin_y)
+      end
+
+      # Table tag.
+      #
+      # @return [String]
+      def tag
+        TAG
+      end
+
+      # Origins map.
+      #
+      # @return [Hash{Integer => Integer}]
+      def origins
+        @origins ||= {}
+      end
+
+      private
+
+      def parse!
+        @major_version, @minor_version = read(4, 'n*')
+        @default_vert_origin_y = read_signed(1).first
+        @count = read(2, 'n').first
+
+        count.times do
+          glyph_id = read(2, 'n').first
+          origins[glyph_id] = read_signed(1).first
+        end
+      end
+    end
+  end
+end