inline void group::open(group const& other, std::string const& name)
{
if (hid_ >= 0) {
throw error("h5xx::group object is already in use");
}
if (exists_group(other, name)) {
hid_ = H5Gopen(other.hid(), name.c_str(), H5P_DEFAULT);
}
else {
hid_t lcpl_id = H5Pcreate(H5P_LINK_CREATE); // create group creation property list
H5Pset_create_intermediate_group(lcpl_id, 1); // set intermediate link creation
hid_ = H5Gcreate(other.hid(), name.c_str(), lcpl_id, H5P_DEFAULT, H5P_DEFAULT);
}
if (hid_ < 0){
throw error("creating or opening group \"" + name + "\"");
}
}
/**
* return true if group "name" exists in group "grp"
*/
inline bool exists_group(group const& grp, std::string const& name)
{
hid_t hid = grp.hid();
H5E_BEGIN_TRY {
hid = H5Gopen(hid, name.c_str(), H5P_DEFAULT);
if (hid > 0) {
H5Gclose(hid);
}
} H5E_END_TRY
return (hid > 0);
}