GoodForm
Form validation library. Includes MsgPack and JSON serializer/deserializer.
Building
GoodForm uses std::any, which requires c++17. When c++17 is not available, boost::any is expected and will be installed automatically when using cget.
cd goodform
cget install -f ./requirements.txt # Install dependencies locally.
mkdir build && cd build # Create out of source build directory.
cmake -DCMAKE_TOOLCHAIN_FILE=../cget/cget/cget.cmake .. # Configure project with dependency paths.
makeMsgPack Usage
std::stringstream ss;
goodform::any var, var2;
var = goodform::object
{
{"compact", true},
{"schema", 0}
};
goodform::msgpack::serialize(var, ss);
goodform::msgpack::deserialize(ss, var2);
goodform::form form(var2);
struct
{
bool compact;
std::int32_t schema;
} mpack;
mpack.compact = form.at("compact").boolean().val();
mpack.schema = form.at("schema").int32().val();
if (form.is_good())
{
std::cout << "{ \"compact\": " << std::boolalpha << mpack.compact << ", \"schema\": " << mpack.schema << " }" << std::endl;
}JSON Usage
goodform::any var;
std::stringstream ss;
ss << "{" << std::endl
<< "\"first_name\":\"John\", // This is a comment" << std::endl
<< "\"last_name\":\"Smith\", " << std::endl
<< "\"age\": 23," << std::endl
<< "\"gpa\": 4.0," << std::endl
<< "\"email\":\"john.smith@example.com\"," << std::endl
<< "\"password_hash\":\"5f4dcc3b5aa765d61d8327deb882cf99\"," << std::endl
<< "\"interests\": [\"sailing\",\"swimming\",\"yoga\"]" << std::endl
<< "}" << std::endl;
goodform::json::deserialize(ss, var);
goodform::form form(var);
struct
{
std::string first_name;
std::string last_name;
std::uint8_t age;
float gpa;
std::string email;
std::string password_hash;
bool subscribe_to_email_marketing;
std::list<std::string> interests;
} form_data;
form_data.first_name = form.at("first_name").string().match(std::regex("^[a-zA-Z ]{1,64}$")).val();
form_data.last_name = form.at("last_name").string().match(std::regex("^[a-zA-Z ]{1,64}$")).val();
form_data.age = form.at("age").uint8().val();
form_data.gpa = form.at("gpa").float32().gte(0).lte(4.0).val();
form_data.email = form.at("email").string().match(std::regex("^.{3,256}$")).val();
form_data.password_hash = form.at("password_hash").string().match(std::regex("^[a-fA-F0-9]{32}$")).val();
form_data.subscribe_to_email_marketing = form.at("subscribe_to_email_marketing", true).boolean().val(); // Optional field defaults to true.
form.at("interests").array().for_each([&form_data](goodform::sub_form& sf, std::size_t i)
{
form_data.interests.push_back(sf.string().val());
});
if (form.is_good())
{
// Use validated form_data.
}
else
{
// Handle error.
}