Various developments.

1 files changed, 91 insertions, 0 deletions

diff --git a/src/xml.h b/src/xml.h
new file mode 100644
index 0000000..568eba5
--- /dev/null
+++ b/src/xml.h
@@ -0,0 +1,91 @@
+/*
+    Copyright (C) 2014 Carl Hetherington <cth@carlh.net>
+
+    This program 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.
+
+    This program 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 this program; if not, write to the Free Software
+    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+*/
+
+#ifndef LIBSUB_XML_H
+#define LIBSUB_XML_H
+
+#include "exceptions.h"
+#include <libcxml/cxml.h>
+
+namespace sub
+{
+
+template <class T>
+boost::shared_ptr<T>
+optional_type_child (cxml::Node const & node, std::string name)
+{
+	std::list<boost::shared_ptr<cxml::Node> > n = node.node_children (name);
+	if (n.size() > 1) {
+		throw XMLError ("duplicate XML tag");
+	} else if (n.empty ()) {
+		return boost::shared_ptr<T> ();
+	}
+
+	return boost::shared_ptr<T> (new T (n.front ()));
+}
+
+template <class T>
+boost::shared_ptr<T> type_child (boost::shared_ptr<const cxml::Node> node, std::string name) {
+	return boost::shared_ptr<T> (new T (node->node_child (name)));
+}
+	
+template <class T>
+boost::shared_ptr<T>
+optional_type_child (boost::shared_ptr<const cxml::Node> node, std::string name)
+{
+	return optional_type_child<T> (*node.get(), name);
+}
+
+template <class T>
+std::list<boost::shared_ptr<T> >
+type_children (cxml::Node const & node, std::string name)
+{
+	std::list<boost::shared_ptr<cxml::Node> > n = node.node_children (name);
+        std::list<boost::shared_ptr<T> > r;
+        for (typename std::list<boost::shared_ptr<cxml::Node> >::iterator i = n.begin(); i != n.end(); ++i) {
+		r.push_back (boost::shared_ptr<T> (new T (*i)));
+	}
+	return r;
+}
+
+template <class T>
+std::list<boost::shared_ptr<T> >
+type_children (boost::shared_ptr<const cxml::Node> node, std::string name)
+{
+	return type_children<T> (*node.get(), name);
+}
+	
+template <class T>
+std::list<boost::shared_ptr<T> >
+type_grand_children (cxml::Node const & node, std::string name, std::string sub)
+{
+	boost::shared_ptr<const cxml::Node> p = node.node_child (name);
+	return type_children<T> (p, sub);
+}
+
+template <class T>
+std::list<boost::shared_ptr<T> >
+type_grand_children (boost::shared_ptr<const cxml::Node> node, std::string name, std::string sub)
+{
+	return type_grand_children<T> (*node.get(), name, sub);
+}
+	
+}
+
+#endif