Move number_attribute() to xml_util.h

1 files changed, 35 insertions, 0 deletions

diff --git a/src/lib/xml_util.h b/src/lib/xml_util.h
new file mode 100644
index 000000000..2dbade015
--- /dev/null
+++ b/src/lib/xml_util.h
@@ -0,0 +1,35 @@
+/*
+    Copyright (C) 2024 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 <libcxml/cxml.h>
+
+
+template <class T>
+T
+number_attribute(cxml::ConstNodePtr node, std::string name1, std::string name2)
+{
+	auto value = node->optional_number_attribute<T>(name1);
+	if (!value) {
+		value = node->number_attribute<T>(name2);
+	}
+	return *value;
+}
+