-void jxbt_throw_task_cancelled(JNIEnv* env, std::string details);
-/** Thrown when looking for a storage from name does not lead to anything */
-void jxbt_throw_storage_not_found(JNIEnv* env, std::string invalid_name);
-}
+void jxbt_throw_task_cancelled(JNIEnv* env, const std::string& details);
+
+class jstring_wrapper {
+ JNIEnv* env_ = nullptr;
+ jstring jstr_ = nullptr;
+
+public:
+ const char* value = nullptr;
+
+ jstring_wrapper(JNIEnv* env, jstring jstr) : env_(env), jstr_(jstr)
+ {
+ if (jstr != nullptr)
+ value = env_->GetStringUTFChars(jstr_, nullptr);
+ }
+ void reset(JNIEnv* env, jstring jstr)
+ {
+ if (jstr_ != nullptr)
+ env_->ReleaseStringUTFChars(jstr_, value);
+ env_ = env;
+ jstr_ = jstr;
+ if (jstr != nullptr)
+ value = env_->GetStringUTFChars(jstr_, nullptr);
+ }
+ ~jstring_wrapper()
+ {
+ if (jstr_ != nullptr)
+ env_->ReleaseStringUTFChars(jstr_, value);
+ }
+ operator const char*() const { return value; }
+ operator const std::string() const { return std::string(value); }
+};
+