lib/tiff.rb in exifr-1.0.1 vs lib/tiff.rb in exifr-1.0.2

@@ -1,8 +1,9 @@
 # Copyright (c) 2007, 2008, 2009, 2010 - R.W. van 't Veer
 
 require 'rational'
+require 'enumerator'
 
 module EXIFR
   # = TIFF decoder
   #
   # == Date properties
@@ -481,18 +482,22 @@
             start = len > 4 ? @offset + 8 : (pos + 8) # UserComment first 8-bytes is char code
             @value = [pack[data[start..(start + len - 1)]]].flatten
           end
         when 5 # unsigned rational
           len, pack = count * 8, proc do |d|
-            d.unpack(data.long + '*').each_slice(2).map do |f|
-              rational(*f)
+            rationals = []
+            d.unpack(data.long + '*').each_slice(2) do |f|
+              rationals << rational(*f)
             end
+            rationals
           end
         when 10 # signed rational
           len, pack = count * 8, proc do |d|
-            d.unpack(data.long + '*').map{|n| sign_long(n)}.each_slice(2).map do |f|
-              rational(*f)
+            rationals = []
+            d.unpack(data.long + '*').map{|n| sign_long(n)}.each_slice(2) do |f|
+              rationals << rational(*f)
             end
+            rationals
           end
         end
 
         if len && pack && @type != 7
           start = len > 4 ? @offset : (pos + 8)