Fixed bug with PNG/GIF not seeking to the right point in the stream

alexandrebini · Feb 18, 2009 · 7582f19 · 7582f19
1 parent 5a24fec
commit 7582f19
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Showing 2 changed files with 4 additions and 2 deletions.
diff --git a/lib/parsers/gif.rb b/lib/parsers/gif.rb
@@ -3,7 +3,8 @@ module ImageSpec
   class GIF
 
     def self.dimensions(file)
-      file.read(4, 6).unpack('SS')
+      file.seek(6)
+      file.read(4).unpack('SS')
     end
 
   end

diff --git a/lib/parsers/png.rb b/lib/parsers/png.rb
@@ -3,7 +3,8 @@ module ImageSpec
   class PNG
 
     def self.dimensions(file)
-      file.read(8, 0x10).unpack('NN')
+      file.seek(0x10)
+      file.read(8).unpack('NN')
     end
 
   end