new I/O interface

lib/serialisation/XmlIO.cc

@@ -0,0 +1,59 @@
+#include <Grid.h>
+
+using namespace Grid;
+using namespace std;
+
+// Writer implementation ///////////////////////////////////////////////////////
+XmlWriter::XmlWriter(const string &fileName)
+: fileName_(fileName)
+{
+  node_ = doc_.append_child();
+  node_.set_name("grid");
+}
+
+XmlWriter::~XmlWriter(void)
+{
+  doc_.save_file(fileName_.c_str(), "  ");
+}
+
+void XmlWriter::push(const string &s)
+{
+  node_ = node_.append_child(s.c_str());
+}
+
+void XmlWriter::pop(void)
+{
+  node_ = node_.parent();
+}
+
+// Reader implementation ///////////////////////////////////////////////////////
+XmlReader::XmlReader(const string &fileName)
+: fileName_(fileName)
+{
+  pugi::xml_parse_result result = doc_.load_file(fileName_.c_str());
+  
+  if ( !result )
+  {
+    cerr << "XML error description: " << result.description() << "\n";
+    cerr << "XML error offset     : " << result.offset        << "\n";
+    abort();
+  }
+  
+  node_ = doc_.child("grid");
+}
+
+void XmlReader::push(const string &s)
+{
+  node_ = node_.child(s.c_str());
+}
+
+void XmlReader::pop(void)
+{
+  node_ = node_.parent();
+}
+
+template <>
+void XmlReader::readDefault(const string &s, string &output)
+{
+  output = node_.child(s.c_str()).first_child().value();
+}