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

src/hurricanedata/filepathmanager.cpp

@@ -0,0 +1,40 @@
+#include <iostream>
+#include <vector>
+#include <string>
+#include <filesystem>
+#include <algorithm>
+
+#include "filepathmanager.h"
+
+namespace fs = std::filesystem;
+
+FilePathManager::FilePathManager(const std::string& path) {
+    // Check if the directory exists
+    if (!fs::exists(path) || !fs::is_directory(path)) {
+        std::cerr << "Error: Directory does not exist or is not valid." << std::endl;
+        exit(1);
+    }
+
+    // Iterate over directory entries
+    for (const auto& entry : fs::directory_iterator(path)) {
+        if (entry.is_regular_file() && entry.path().extension() == ".nc4") {
+            fileNames.push_back(entry.path().string());
+        }
+    }
+
+    // Sort file names lexicographically
+    std::sort(fileNames.begin(), fileNames.end());
+
+    // Print sorted file names
+    std::cout << "Files in directory '" << path << "' sorted lexicographically:\n";
+    for (const auto& fileName : fileNames) {
+        std::cout << fileName << std::endl;
+    }
+}
+
+const char* FilePathManager::getPath(size_t index) const {
+    return fileNames.at(index).c_str();
+}
+
+
+FilePathManager::~FilePathManager() { }