Store successful DCP encodes.

1 files changed, 87 insertions, 0 deletions

diff --git a/src/lib/analytics.cc b/src/lib/analytics.cc
new file mode 100644
index 000000000..74c21a29c
--- /dev/null
+++ b/src/lib/analytics.cc
@@ -0,0 +1,87 @@
+/*
+    Copyright (C) 2018 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 "analytics.h"
+#include "exceptions.h"
+#include <dcp/raw_convert.h>
+#include <libcxml/cxml.h>
+#include <libxml++/libxml++.h>
+#include <boost/filesystem.hpp>
+#include <boost/algorithm/string.hpp>
+
+using std::string;
+using dcp::raw_convert;
+using boost::algorithm::trim;
+
+Analytics* Analytics::_instance;
+int const Analytics::_current_version = 1;
+
+Analytics::Analytics ()
+	: _successful_dcp_encodes (0)
+{
+
+}
+
+void
+Analytics::successful_dcp_encode ()
+{
+	++_successful_dcp_encodes;
+	write ();
+}
+
+void
+Analytics::write () const
+{
+	xmlpp::Document doc;
+	xmlpp::Element* root = doc.create_root_node ("Analytics");
+
+	root->add_child("Version")->add_child_text(raw_convert<string>(_current_version));
+	root->add_child("SuccessfulDCPEncodes")->add_child_text(raw_convert<string>(_successful_dcp_encodes));
+
+	try {
+		doc.write_to_file_formatted(path("analytics.xml").string());
+	} catch (xmlpp::exception& e) {
+		string s = e.what ();
+		trim (s);
+		throw FileError (s, path("analytics.xml"));
+	}
+}
+
+void
+Analytics::read ()
+try
+{
+	cxml::Document f ("Analytics");
+	f.read_file (path("analytics.xml"));
+	_successful_dcp_encodes = f.number_child<int>("SuccessfulDCPEncodes");
+} catch (...) {
+	/* Never mind */
+}
+
+Analytics*
+Analytics::instance ()
+{
+	if (!_instance) {
+		_instance = new Analytics();
+		_instance->read();
+	}
+
+	return _instance;
+}