From 2cd9086c95686117ffbce92188d50d525ed488bb Mon Sep 17 00:00:00 2001
From: Carl Hetherington <cth@carlh.net>
Date: Sat, 11 Aug 2012 22:06:47 +0100
Subject: Various tweaks for a real-life DCP.

---
 src/xml.cc | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

(limited to 'src/xml.cc')

diff --git a/src/xml.cc b/src/xml.cc
index 4ab6a2e7..72dfe1bb 100644
--- a/src/xml.cc
+++ b/src/xml.cc
@@ -107,6 +107,27 @@ XMLNode::int64_node (string name)
 	return lexical_cast<int64_t> (string_node (name));
 }
 
+int64_t
+XMLNode::optional_int64_node (string name)
+{
+	list<xmlpp::Node*> nodes = xml_nodes (name);
+	if (nodes.size() > 2) {
+		throw XMLError ("duplicate XML tag " + name);
+	}
+
+	if (nodes.empty ()) {
+		return 0;
+	}
+
+	return int64_node (name);
+}
+
+float
+XMLNode::float_node (string name)
+{
+	return lexical_cast<float> (string_node (name));
+}
+
 void
 XMLNode::ignore_node (string name)
 {
-- 
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