security: Add transformation sink/source
Change-Id: I2698f79f639c2bd7c3ce2e00f48be634dc4c983d
Refs: #3009
diff --git a/src/security/transform/buffer-source.cpp b/src/security/transform/buffer-source.cpp
new file mode 100644
index 0000000..b47e855
--- /dev/null
+++ b/src/security/transform/buffer-source.cpp
@@ -0,0 +1,65 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/**
+ * Copyright (c) 2013-2016 Regents of the University of California.
+ *
+ * This file is part of ndn-cxx library (NDN C++ library with eXperimental eXtensions).
+ *
+ * ndn-cxx library is free software: you can redistribute it and/or modify it under the
+ * terms of the GNU Lesser General Public License as published by the Free Software
+ * Foundation, either version 3 of the License, or (at your option) any later version.
+ *
+ * ndn-cxx library is distributed in the hope that it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+ * PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
+ *
+ * You should have received copies of the GNU General Public License and GNU Lesser
+ * General Public License along with ndn-cxx, e.g., in COPYING.md file. If not, see
+ * <http://www.gnu.org/licenses/>.
+ *
+ * See AUTHORS.md for complete list of ndn-cxx authors and contributors.
+ */
+
+#include "buffer-source.hpp"
+
+namespace ndn {
+namespace security {
+namespace transform {
+
+BufferSource::BufferSource(const uint8_t* buf, size_t size)
+ : m_buf(buf)
+ , m_size(size)
+{
+}
+
+BufferSource::BufferSource(const std::string& string)
+ : m_buf(reinterpret_cast<const uint8_t*>(string.data()))
+ , m_size(string.size())
+{
+}
+
+BufferSource::BufferSource(const Buffer& buffer)
+ : m_buf(buffer.buf())
+ , m_size(buffer.size())
+{
+}
+
+void
+BufferSource::doPump()
+{
+ BOOST_ASSERT(m_next != nullptr);
+
+ const uint8_t* buf = m_buf;
+ size_t size = m_size;
+
+ while (0 < size) {
+ size_t nBytesWritten = m_next->write(buf, size);
+ buf += nBytesWritten;
+ size -= nBytesWritten;
+ }
+
+ m_next->end();
+}
+
+} // namespace transform
+} // namespace security
+} // namespace ndn