Added __repr__ for JPEG2000SignatureBox, FileTypeBox.

glymur/jp2box.py

@@ -801,6 +801,13 @@ class FileTypeBox(Jp2kBox):
         self.length = length
         self.offset = offset
 
+    def __repr__(self):
+        msg = "glymur.jp2box.FileTypeBox(brand='{0}', minor_version={1}, "
+        msg += "compatibility_list={2})"
+        msg = msg.format(self.brand, self.minor_version,
+                         self.compatibility_list)
+        return msg
+
     def __str__(self):
         lst = [Jp2kBox.__str__(self),
                '    Brand:  {0}',
@@ -1141,6 +1148,9 @@ class JPEG2000SignatureBox(Jp2kBox):
         self.length = length
         self.offset = offset
 
+    def __repr__(self):
+        return 'glymur.jp2box.JPEG2000SignatureBox()'
+
     def __str__(self):
         msg = Jp2kBox.__str__(self)
         msg += '\n    Signature:  {0:02x}{1:02x}{2:02x}{3:02x}'

glymur/test/test_jp2box.py

@@ -677,6 +677,10 @@ class TestJp2Boxes(unittest.TestCase):
         jp2k = glymur.jp2box.JPEG2000SignatureBox()
         self.assertEqual(jp2k.signature, (13, 10, 135, 10))
 
+        # Test the representation instantiation.
+        newbox = eval(repr(jp2k))
+        self.assertTrue(isinstance(newbox, glymur.jp2box.JPEG2000SignatureBox))
+
     def test_default_ftyp(self):
         """Should be able to instantiate a FileTypeBox"""
         ftyp = glymur.jp2box.FileTypeBox()
@@ -684,6 +688,13 @@ class TestJp2Boxes(unittest.TestCase):
         self.assertEqual(ftyp.minor_version, 0)
         self.assertEqual(ftyp.compatibility_list, ['jp2 '])
 
+        # Test the representation instantiation.
+        newbox = eval(repr(ftyp))
+        self.assertTrue(isinstance(newbox, glymur.jp2box.FileTypeBox))
+        self.assertEqual(newbox.brand, 'jp2 ')
+        self.assertEqual(newbox.minor_version, 0)
+        self.assertEqual(newbox.compatibility_list, ['jp2 '])
+
     def test_default_ihdr(self):
         """Should be able to instantiate an image header box."""
         ihdr = glymur.jp2box.ImageHeaderBox(height=512, width=256,