MessagePackによるenum型のシリアライズ/デシリアライズ

msgpack_enum.cpp

#include <msgpack.hpp>
#include <vector>
#include <map>
#include <iostream>
#include <cstdio>

typedef enum {
	CIRCLE = 0,
	SQUARE = 1,
	TRIANGLE = 2
} fig_t;

class hoge {
public:
	fig_t fig;
	MSGPACK_DEFINE((int&)fig);
};

void serialize(const char* filename) 
{
	// This is target object.
	std::vector<hoge> figs;
	hoge circle, square;
	circle.fig = CIRCLE;
	square.fig = SQUARE;

	figs.push_back(circle);
	figs.push_back(square);

	// Serialize it.
	msgpack::sbuffer buffer;  // simple buffer
	msgpack::pack(&buffer, figs);

	FILE* fp;
	fp = fopen(filename, "wb");
	fwrite(buffer.data(), buffer.size(), 1, fp);
	fclose(fp);
}

void deserialize(const char* filename) 
{
	char buf[1024];
	FILE* fp;

	fp = fopen(filename, "rb");

	ssize_t size = fread(buf, sizeof(buf[0]), 1024, fp);

	msgpack::zone z;
	msgpack::object obj;
	msgpack::unpack(buf, size, NULL, &z, &obj);

	std::cout << "pretty print: " << obj << std::endl;

	try {
		std::vector<hoge> data;
		obj.convert(&data);

		for (std::vector<hoge>::iterator it = data.begin(); it < data.end(); it++) {
			std::cout << (*it).fig << std::endl;
		}
	} catch(msgpack::type_error& e) {
		std::cout << "type mismatch. std::vector<std::striang> is expected"
							<< std::endl;
	}
}
 
int main(int argc, char** argv) 
{
	const char* filename = "msgpack.txt";

	serialize(filename);
	deserialize(filename);

	return 0;
}

MSGPACK_DEFINE((int&)fig) 真赞