Add disk writer tool.

1 files changed, 48 insertions, 0 deletions

diff --git a/src/lib/nanomsg.h b/src/lib/nanomsg.h
new file mode 100644
index 000000000..dc84a6ce7
--- /dev/null
+++ b/src/lib/nanomsg.h
@@ -0,0 +1,48 @@
+/*
+    Copyright (C) 2020 Carl Hetherington <cth@carlh.net>
+
+    This file is part of DCP-o-matic.
+
+    DCP-o-matic is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    DCP-o-matic 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 General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with DCP-o-matic.  If not, see <http://www.gnu.org/licenses/>.
+
+*/
+
+#include <string>
+#include <list>
+#include <boost/optional.hpp>
+#include <boost/noncopyable.hpp>
+
+class Nanomsg : public boost::noncopyable
+{
+public:
+	explicit Nanomsg (bool server);
+
+	void blocking_send (std::string s);
+	/** Try to send a message, returning true if successful, false
+	 *  if we should try again (EAGAIN) or throwing an exception on any other
+	 *  error.
+	 */
+	bool nonblocking_send (std::string s);
+	std::string blocking_get ();
+	boost::optional<std::string> nonblocking_get ();
+
+private:
+	boost::optional<std::string> get_from_pending ();
+	void recv_and_parse (bool blocking);
+
+	int _socket;
+	std::list<std::string> _pending;
+	std::string _current;
+};
+