src/bit_struct/byte_data.rb in BitStructEx-0.0.74 vs src/bit_struct/byte_data.rb in BitStructEx-0.0.85

@@ -1,13 +1,13 @@
 
+require 'bit_struct/endianess.rb'
+
 module BitStruct
 
   class ByteData
 
-    LITTLE_ENDIAN = LITTLE = INTEL = 0
-    BIG_ENDIAN = BIG = MOTOROLA = 1
-    NETWORK_BYTE_ORDER = BIG_ENDIAN
+    include Endianess
 
     def initialize( data, endianess = nil )
       raise "Bad input" unless data.respond_to? "[]".to_sym
       raise "Unknown endianess" unless valid endianess
       @data = data
@@ -38,10 +38,14 @@
 
     def []=( idx, val )
       @data[ endianized( idx ) ] = val
     end
 
+    def reverse
+      ReversedByteData.new self, BIG_ENDIAN
+    end
+
     private
 
     def valid( endianess )
       endianess == nil || endianess == LITTLE_ENDIAN || endianess == BIG_ENDIAN
     end
@@ -49,8 +53,18 @@
     def endianized( idx )
       return idx if @endianess == BIG_ENDIAN
       return @data.length - idx - 1 if @endianess == LITTLE_ENDIAN
     end
 
+  end
+
+  class ReversedByteData < ByteData
+
+    alias super_endianized endianized
+
+    def endianized( idx )
+      res = super_endianized( idx )
+      @data.length - res - 1
+    end
   end
 
 end