still need to modify datareader to use netcdf on only one thread

src/hurricanedata/datareader.cu

@@ -0,0 +1,58 @@
+#include "datareader.h"
+
+#include <netcdf>
+#include <optional>
+
+using namespace std;
+using namespace netCDF;
+
+DataReader::DataReader(const std::string &path, std::string variableName):
+filePathManager(path), variableName(variableName) { }
+
+size_t DataReader::fileLength(size_t fileIndex) {
+    cout << "filePathMan = " << filePathManager.getPath(fileIndex) << " bla = " << fileIndex << "\n";
+
+    NcFile data(filePathManager.getPath(fileIndex), NcFile::read);
+
+    multimap<string, NcVar> vars = data.getVars();
+
+    NcVar var = vars.find(variableName)->second;   
+    
+    size_t length = 1;
+    for (NcDim dim: var.getDims()) {
+        length *= dim.getSize();
+    }
+
+    // TODO: Turns out c-NetCDF is not thread safe :( https://github.com/Unidata/netcdf-c/issues/1373
+    // size_t length = 34933248;
+    std::cout << "return length" << length << "\n";
+    return length;
+}
+
+template <typename T>
+void DataReader::loadFile(T* dataOut, size_t fileIndex) {
+    std::cout << "loading file" << fileIndex <<"\n";
+    NcFile data(filePathManager.getPath(fileIndex), NcFile::read);
+
+    // multimap<string, NcVar> vars = data.getVars();
+
+    // NcVar var = vars.find(variableName)->second;   
+
+    // var.getVar(dataOut);
+}
+
+template void DataReader::loadFile<float>(float* dataOut, size_t fileIndex);
+template void DataReader::loadFile<int>(int* dataOut, size_t fileIndex);
+
+DataReader::~DataReader() {
+
+}
+
+// template <typename T>
+// void DataReader::readAndAllocateAxis(T** axis_ptr, size_t *size, const string &varName) {
+//     assert(var.getDimCount() == 1);
+//     netCDF::NcDim dim = var.getDim(0);
+//     *size = dim.getSize();
+//     cudaError_t status = cudaMallocManaged(axis_ptr, *size*sizeof(T));
+//     var.getVar(*axis_ptr);
+// }