avoid exceptions

mission/memory/NvmParameterBase.cpp

@@ -0,0 +1,60 @@
+#include <mission/memory/NvmParameterBase.h>
+
+#include <fstream>
+
+#include "fsfw/filesystem/HasFileSystemIF.h"
+#include "fsfw/serviceinterface/ServiceInterface.h"
+
+NVMParameterBase::NVMParameterBase(std::string fullName) : fullName(fullName) {}
+
+NVMParameterBase::NVMParameterBase() {}
+
+ReturnValue_t NVMParameterBase::readJsonFile() {
+  std::error_code e;
+  if (std::filesystem::exists(fullName, e)) {
+    // Read JSON file content into object
+    std::ifstream i(fullName);
+    try {
+      i >> json;
+    } catch (nlohmann::json::exception& e) {
+      sif::warning << "Reading JSON file failed with error " << e.what() << std::endl;
+      return returnvalue::FAILED;
+    }
+    return returnvalue::OK;
+  }
+  return HasFileSystemIF::FILE_DOES_NOT_EXIST;
+}
+
+ReturnValue_t NVMParameterBase::writeJsonFile() {
+  std::ofstream o(fullName);
+  try {
+    o << std::setw(4) << json << std::endl;
+  } catch (nlohmann::json::exception& e) {
+    sif::warning << "Writing JSON file failed with error " << e.what() << std::endl;
+    return returnvalue::FAILED;
+  }
+  return returnvalue::OK;
+}
+
+void NVMParameterBase::setFullName(std::string fullName) { this->fullName = fullName; }
+
+std::string NVMParameterBase::getFullName() const { return fullName; }
+
+bool NVMParameterBase::getJsonFileExists() {
+  std::error_code e;
+  return std::filesystem::exists(fullName, e);
+}
+
+void NVMParameterBase::printKeys() const {
+  sif::info << "Printing keys for JSON file " << fullName << std::endl;
+  for (const auto& key : keys) {
+    sif::info << key << std::endl;
+  }
+}
+
+void NVMParameterBase::print() const {
+  sif::info << "Printing JSON file " << fullName << std::endl;
+  for (const auto& key : keys) {
+    sif::info << key << ": " << json[key] << std::endl;
+  }
+}