lib/mobi/stream_slicer.rb in mobi-0.1.2 vs lib/mobi/stream_slicer.rb in mobi-0.2.0

@@ -1,67 +1,44 @@
 module Mobi
   class StreamSlicer
 
-    attr_reader :stream, :length
+    attr_reader   :stream, :length
     attr_accessor :start, :stop
 
-    def initialize(stream, start=0, stop=nil)
+    def initialize(stream, start = 0, stop = nil)
       @stream = stream
       @start  = start
+
       if stop.nil?
         stream.seek(0, 2)
         stop = stream.tell
       end
-      @stop = stop
+
+      @stop    = stop
       @length  = stop - start
     end
 
     def [](offset, bytes=1)
       stream = @stream
-      base = @start
-      
+      base   = @start
+
       if bytes == 1
         stream.seek(base + offset)
         return stream.read(1)
       end
-      
+
       start = offset
       stop  = offset + bytes
-      
+
       # Reverse if you want to pass in negative bytes
       start, stop = stop, start if bytes < 0
-      
+
+      # I can't find a use case where it will ever get here
       size = stop - start
-      return "" if size <= 0
-      
+      return nil if size <= 0
+
       stream.seek(base + start)
       data = stream.read(size)
       return data
     end
-
-
-    # def [](key)
-    #   stream = self.stream
-    #   base = self.start
-    #   if key.is_a? Integer
-    #     stream.seek(base + key)
-    #     return stream.read(1)
-    #   end
-    #   if key.is_a? Range
-    #     start = key.first 
-    #     stop = key.last
-    # 
-    #     if key.max.nil?
-    #       start, stop = stop, start
-    #     end
-    #     size = stop - start
-    # 
-    #     return "" if size <= 0
-    # 
-    #     stream.seek(base + start)
-    #     data = stream.read(size)
-    #     return data
-    #   end
-    # end
-
   end
-end
\ No newline at end of file
+end