Leitor de JSON usando JSONCPP :D

jsoncpptest.cpp

#include <iostream>
#include <fstream>

#include "json/json.h"

using namespace std;

void print_version(const Json::Value& root) {
    cout << root["version"].asString() << endl;
}

void print_texture(const Json::Value& root) {
    cout << root["texture"].asString() << endl;
}

void print_region_name(const Json::Value& region) {
    cout << region["name"].asString() << endl;
}

void print_region(const Json::Value& region) {
    const Json::Value values = region["region"];
    cout << '[' << values[0] << ", " << values[1] << ", " << values[2] << ", " << values[3] << ']' << endl;
}

void print_regions(const Json::Value& root) {
    const Json::Value regions = root.get("regions", Json::Value());
    for (int i = 0; i < regions.size(); ++i) {
        print_region_name(regions[i]);
        print_region(regions[i]);
    }
}

int main() { 
    Json::Value root;
    ifstream atlas("test.json", ifstream::binary);
    atlas >> root;

    print_version(root);
    print_texture(root);
    print_regions(root);

    return 0;
}

test.json

{
    "version": "0.1",
    "texture": "test.png",
    "regions": [
        {
            "name": "tr1",
            "region": [0, 0, 8, 8]
        },
        {
            "name": "tr2",
            "region": [8, 0, 8, 8]
        },
        {
            "name": "tr3",
            "region": [0, 8, 8, 8]
        },
        {
            "name": "tr4",
            "region": [8, 8, 8, 8]
        } 
    ]
}