Add bin and edit workflow

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

@@ -0,0 +1,67 @@
+# frozen_string_literal: true
+
+require_relative 'reader'
+
+module TTFunk
+  # SFNT table
+  class Table
+    include Reader
+
+    # File this table is in.
+    # @return [TTFunk::File]
+    attr_reader :file
+
+    # This table's offset from the file beginning.
+    # @return [Integer]
+    attr_reader :offset
+
+    # This table's length in byes.
+    # @return [Integer, nil]
+    attr_reader :length
+
+    # @param file [TTFunk::File]
+    def initialize(file)
+      @file = file
+      @offset = nil
+      @length = nil
+
+      info = file.directory_info(tag)
+
+      if info
+        @offset = info[:offset]
+        @length = info[:length]
+
+        parse_from(@offset) { parse! }
+      end
+    end
+
+    # Does this table exist in the file?
+    #
+    # @return [Boolean]
+    def exists?
+      !@offset.nil?
+    end
+
+    # Raw bytes of this table in the file.
+    #
+    # @return [String, nil]
+    def raw
+      if exists?
+        parse_from(offset) { io.read(length) }
+      end
+    end
+
+    # Table tag.
+    #
+    # @return [String]
+    def tag
+      self.class.name.split('::').last.downcase
+    end
+
+    private
+
+    def parse!
+      # do nothing, by default
+    end
+  end
+end