NetcdfMetadataConfiguration.cpp

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#include "include/NetcdfMetadataConfiguration.hpp"
 
#include <map>
#include <ncFile.h>
#include <ncGroup.h>
#include <ncVar.h>
 
namespace Nextsim {
 
std::stringstream NetcdfMetadataConfiguration::read(const std::string& source)
{
    // Parse the current configuration to look for fileOptionName
    boost::program_options::options_description opt;
    opt.add_options()(
        source.c_str(), boost::program_options::value<std::string>()->default_value(""), "");
    std::string fileName = Configurator::parse(opt)[source].as<std::string>();
 
    netCDF::NcFile ncFile(fileName, netCDF::NcFile::read);
    // Get the configuration group, allowing for it to not exist. In which
    // case, do nothing
    netCDF::NcGroup metadataGroup(ncFile.getGroup("metadata"));
    if (metadataGroup.isNull()) {
        return std::stringstream();
    }
    netCDF::NcGroup configurationGroup(metadataGroup.getGroup("configuration"));
 
    std::stringstream config;
 
    std::multimap<std::string, netCDF::NcVar> configs = configurationGroup.getVars();
    for (auto entry : configs) {
        config << entry.first << " = ";
        if (entry.second.getType() == netCDF::ncDouble) {
            double value;
            entry.second.getVar(&value);
            config << value;
        } else if (entry.second.getType() == netCDF::ncInt) {
            int value;
            entry.second.getVar(&value);
            config << value;
        } else if (entry.second.getType() == netCDF::ncUint) {
            unsigned value;
            entry.second.getVar(&value);
            config << value;
        } else if (entry.second.getType() == netCDF::ncString) {
            char* cValue;
            entry.second.getVar(&cValue);
            config << cValue;
        }
        config << std::endl;
    }
 
    ncFile.close();
 
    return config;
}
 
} /* namespace Nextsim */