io.rb in bindata-1.5.0

- old
+ new

@@ -5,11 +5,11 @@
   # interface for BinData objects to use when accessing the IO.
   class IO
 
     # Creates a StringIO around +str+.
     def self.create_string_io(str = "")
-      if RUBY_VERSION >= "1.9"
+      if str.respond_to?(:force_encoding)
         str = str.dup.force_encoding(Encoding::BINARY)
       end
       StringIO.new(str)
     end
 
@@ -17,10 +17,10 @@
     # for reading, #write if used for writing, #pos if reading the current
     # stream position and #seek if setting the current stream position.  If
     # +io+ is a string it will be automatically wrapped in an StringIO object.
     #
     # The IO can handle bitstreams in either big or little endian format.
-    # 
+    #
     #      M  byte1   L      M  byte2   L
     #      S 76543210 S      S fedcba98 S
     #      B          B      B          B
     #
     # In big endian format: