avoid exceptions

mission/memory/NvmParameterBase.h

@@ -0,0 +1,85 @@
+#ifndef BSP_Q7S_CORE_NVMPARAMS_NVMPARAMIF_H_
+#define BSP_Q7S_CORE_NVMPARAMS_NVMPARAMIF_H_
+
+#include <filesystem>
+#include <nlohmann/json.hpp>
+#include <string>
+
+#include "fsfw/returnvalues/returnvalue.h"
+#include "returnvalues/classIds.h"
+
+class NVMParameterBase {
+ public:
+  virtual ~NVMParameterBase() {}
+
+  NVMParameterBase(std::string fullName);
+
+  /**
+   * @brief	Use this constructor when name of json file shall be set on an later
+   * 				point
+   */
+  NVMParameterBase();
+
+  bool getJsonFileExists();
+
+  /**
+   * Returns returnvalue::OK on successfull read and HasFileSystemIF::FILE_DOES_NOT_EXIST if
+   * file does not exist yet.
+   * @return
+   */
+  virtual ReturnValue_t readJsonFile();
+
+  virtual ReturnValue_t writeJsonFile();
+
+  virtual void setFullName(std::string fullName);
+  std::string getFullName() const;
+
+  template <typename T>
+  ReturnValue_t insertValue(std::string key, T value);
+
+  template <typename T>
+  ReturnValue_t setValue(std::string key, T value);
+
+  template <typename T>
+  ReturnValue_t getValue(std::string key, T& value) const;
+
+  void printKeys() const;
+  void print() const;
+
+ private:
+  static const uint8_t INTERFACE_ID = CLASS_ID::NVM_PARAM_BASE;
+
+  //! [EXPORT] : [COMMENT] Specified key does not exist in json file
+  static const ReturnValue_t KEY_NOT_EXISTS = MAKE_RETURN_CODE(0xA0);
+
+  nlohmann::json json;
+  std::vector<std::string> keys;
+  std::string fullName = "";
+};
+
+template <typename T>
+inline ReturnValue_t NVMParameterBase::insertValue(std::string key, T value) {
+  // Check whether key already exists. If it does not, insert it
+  if (std::find(keys.begin(), keys.end(), key) == keys.end()) {
+    keys.push_back(key);
+  }
+  json[key] = value;
+  return returnvalue::OK;
+}
+
+template <typename T>
+inline ReturnValue_t NVMParameterBase::setValue(std::string key, T value) {
+  json[key] = value;
+  return returnvalue::OK;
+}
+
+template <typename T>
+inline ReturnValue_t NVMParameterBase::getValue(std::string key, T& value) const {
+  if (!json.contains(key)) {
+    return KEY_NOT_EXISTS;
+  }
+  value = json[key];
+  return returnvalue::OK;
+}
+
+#endif /* BSP_Q7S_CORE_NVMPARAMS_NVMPARAMIF_H_ */