DER encoding: added PrintVisitor.
diff --git a/ndn-cpp/encoding/der/visitor/print-visitor.hpp b/ndn-cpp/encoding/der/visitor/print-visitor.hpp
new file mode 100644
index 0000000..45d0bfd
--- /dev/null
+++ b/ndn-cpp/encoding/der/visitor/print-visitor.hpp
@@ -0,0 +1,40 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil -*- */
+/**
+ * Copyright (C) 2013 Regents of the University of California.
+ * @author: Yingdi Yu <yingdi@cs.ucla.edu>
+ * @author: Jeff Thompson <jefft0@remap.ucla.edu>
+ * See COPYING for copyright and distribution information.
+ */
+
+#ifndef NDN_PRINT_VISITOR_HPP
+#define NDN_PRINT_VISITOR_HPP
+
+#include <vector>
+#include <string>
+#include "void-visitor.hpp"
+
+namespace ndn {
+
+namespace der {
+
+class PrintVisitor : public VoidVisitor {
+public:
+ virtual void visit(DerBool&, ndnboost::any);
+ virtual void visit(DerInteger&, ndnboost::any);
+ virtual void visit(DerPrintableString&, ndnboost::any);
+ virtual void visit(DerBitString&, ndnboost::any);
+ virtual void visit(DerNull&, ndnboost::any);
+ virtual void visit(DerOctetString&, ndnboost::any);
+ virtual void visit(DerOid&, ndnboost::any);
+ virtual void visit(DerSequence&, ndnboost::any);
+ virtual void visit(DerGtime&, ndnboost::any);
+
+private:
+ static void printData(const std::vector<uint8_t>& blob, const std::string& indent, int offset = 0);
+};
+
+} // der
+
+}
+
+#endif