First implementation of HDF5 serial IO writer, reader is still empty

lib/serialisation/Hdf5IO.cc

@@ -0,0 +1,84 @@
+#include <Grid.h>
+
+using namespace Grid;
+#ifndef H5_NO_NAMESPACE
+using namespace H5NS;
+#endif
+
+// Writer implementation ///////////////////////////////////////////////////////
+Hdf5Writer::Hdf5Writer(const std::string &fileName)
+: fileName_(fileName)
+, file_(fileName.c_str(), H5F_ACC_TRUNC)
+{
+  group_ = file_.openGroup("/");
+}
+
+Hdf5Writer::~Hdf5Writer(void)
+{
+  file_.close();
+}
+
+void Hdf5Writer::push(const std::string &s)
+{
+  group_ = group_.createGroup(s);
+  path_.push_back(s);
+}
+
+void Hdf5Writer::pop(void)
+{
+  path_.pop_back();
+  if (path_.empty())
+  {
+    group_ = file_.openGroup("/");
+  }
+  else
+  {
+    auto binOp = [](const std::string &a, const std::string &b)->std::string
+    {
+      return a + "/" + b;
+    };
+    
+    group_ = group_.openGroup(std::accumulate(path_.begin(), path_.end(),
+                                              std::string(""), binOp));
+  }
+}
+
+template <>
+void Hdf5Writer::writeDefault(const std::string &s, const std::string &x)
+{
+  StrType     strType(PredType::C_S1, x.size());
+  Attribute   attribute;
+  hsize_t     attrDim = 1;
+  DataSpace   attrSpace(1, &attrDim);
+  
+  attribute = group_.createAttribute(s, strType, attrSpace);
+  attribute.write(strType, x.data());
+}
+
+void Hdf5Writer::writeDefault(const std::string &s, const char *x)
+{
+  std::string sx(x);
+  
+  writeDefault(s, sx);
+}
+
+// Reader implementation ///////////////////////////////////////////////////////
+Hdf5Reader::Hdf5Reader(const std::string &fileName)
+{
+    
+}
+
+Hdf5Reader::~Hdf5Reader(void)
+{
+    
+}
+
+void Hdf5Reader::push(const std::string &s)
+{
+    
+}
+
+void Hdf5Reader::pop(void)
+{
+    
+}