public:

std::string message;

std::string syscall;

std::string path;

int cerrno = 0;

void set(const char* iMessage = NULL, const char* iSyscall = NULL, int iErrno = 0, const char* iPath = NULL) {

if (iMessage) message.assign(iMessage);

if (iSyscall) syscall.assign(iSyscall);

cerrno = iErrno;

if (iPath) path.assign(iPath);

}

void reset() {

message.clear();

syscall.clear();

path.clear();

cerrno = 0;

}

bool empty() {

return cerrno == 0 && message.empty();

}

Napi::Error toError(Napi::Env env) {

if (cerrno) {

Napi::Error err = Napi::Error::New(env, strerror(cerrno));

if (!syscall.empty()) err.Value().Set("syscall", syscall);

if (!path.empty()) err.Value().Set("path", path);

return err;

} else {

return Napi::Error::New(env, message);

}

}