Very scratchy data store

lib/cucover.rb

@@ -238,4 +238,4 @@ def store
 
 After do
   Cucover.stop_recording
-end
+end

lib/cucover/recording.rb

@@ -1,10 +1,18 @@
 module Cucover
   class Recording
+    class Data < Struct.new(:file_colon_line, :covered_files)
+    end
+
     def initialize(scenario_or_table_row)
+      @scenario_or_table_row = scenario_or_table_row
       @analyzer = Rcov::CodeCoverageAnalyzer.new
       @covered_files = []
     end
 
+    def file_colon_line
+      @scenario_or_table_row.file_colon_line
+    end
+
     def record_file(source_file)
       @covered_files << source_file unless @covered_files.include?(source_file)
     end
@@ -17,5 +25,9 @@ def stop
       @analyzer.remove_hook
       @covered_files.concat @analyzer.analyzed_files
     end
+
+    def to_data
+      Data.new(file_colon_line, @covered_files)
+    end
   end
 end

lib/cucover/store.rb

@@ -1,13 +1,36 @@
 module Cucover
   class Store
+    def initialize
+      if File.exists?(data_file)
+        puts "reading #{data_file}"
+        File.open(data_file) do |f|
+          @recordings = Marshal.load(f)
+        end
+      else
+        puts "no data - starting with a blank slate"
+        @recordings = {}
+      end
+      at_exit do
+        File.open(data_file, 'w') do |file|
+          file.puts Marshal.dump(@recordings)
+        end
+      end
+    end
+
     def keep(recording)
-
+      @recordings[recording.file_colon_line] = recording.to_data
     end
 
     def fetch_recordings_covering(source_file)
       [ FakeRecording.new ]
     end
 
+    private
+
+    def data_file
+      Dir.pwd + '/cucover.data'
+    end
+
     class FakeRecording
       def feature_filename
         "features/call_foo.feature"