Suppressing warnings until metadata printing is done. Closes #96

glymur/jp2dump.py

@@ -1,6 +1,7 @@
 """
 Entry point for jp2dump script.
 """
+import warnings
 
 from .jp2k import Jp2k
 
@@ -15,8 +16,22 @@ def jp2dump(filename, codestream=False):
     codestream : optional, logical scalar
         Whether or not to dump codestream contents.
     """
-    j = Jp2k(filename)
-    if codestream:
-        print(j.get_codestream(header_only=False))
-    else:
-        print(j)
+    with warnings.catch_warnings(record=True) as wctx:
+
+        # JP2 metadata can be extensive, so don't print any warnings until we
+        # are done with the metadata.
+        j = Jp2k(filename)
+        if codestream:
+            print(j.get_codestream(header_only=False))
+        else:
+            print(j)
+
+        # Re-emit any warnings that may have been suppressed.
+        if len(wctx) > 0:
+            print("\n")
+        for warning in wctx:
+            print("{0}:{1}: {2}: {3}".format(warning.filename,
+                                             warning.lineno,
+                                             warning.category.__name__,
+                                             warning.message))
+