I’m serializing by casting the class to a char* and writing it to a
file with fstream. Reading of course is just the reverse.
Unfortunately, this only works as long as there are no pointers involved. You might want to give your classes void MyClass::serialize(std::ostream)
and void MyClass::deserialize(std::ifstream)
, and call those. For this case, you’d want
std::ostream& MyClass::serialize(std::ostream &out) const {
out << height;
out << ',' //number seperator
out << width;
out << ',' //number seperator
out << name.size(); //serialize size of string
out << ',' //number seperator
out << name; //serialize characters of string
return out;
}
std::istream& MyClass::deserialize(std::istream &in) {
if (in) {
int len=0;
char comma;
in >> height;
in >> comma; //read in the seperator
in >> width;
in >> comma; //read in the seperator
in >> len; //deserialize size of string
in >> comma; //read in the seperator
if (in && len) {
std::vector<char> tmp(len);
in.read(tmp.data() , len); //deserialize characters of string
name.assign(tmp.data(), len);
}
}
return in;
}
You may also want to overload the stream operators for easier use.
std::ostream &operator<<(std::ostream& out, const MyClass &obj)
{obj.serialize(out); return out;}
std::istream &operator>>(std::istream& in, MyClass &obj)
{obj.deserialize(in); return in;}