| #include "json/json.h" |
| #include <iostream> |
| /** |
| * \brief Parse a raw string into Value object using the CharReaderBuilder |
| * class, or the legacy Reader class. |
| * Example Usage: |
| * $g++ readFromString.cpp -ljsoncpp -std=c++11 -o readFromString |
| * $./readFromString |
| * colin |
| * 20 |
| */ |
| int main() { |
| const std::string rawJson = R"({"Age": 20, "Name": "colin"})"; |
| const auto rawJsonLength = static_cast<int>(rawJson.length()); |
| constexpr bool shouldUseOldWay = false; |
| JSONCPP_STRING err; |
| Json::Value root; |
| |
| if (shouldUseOldWay) { |
| Json::Reader reader; |
| reader.parse(rawJson, root); |
| } else { |
| Json::CharReaderBuilder builder; |
| const std::unique_ptr<Json::CharReader> reader(builder.newCharReader()); |
| if (!reader->parse(rawJson.c_str(), rawJson.c_str() + rawJsonLength, &root, |
| &err)) { |
| std::cout << "error" << std::endl; |
| return EXIT_FAILURE; |
| } |
| } |
| const std::string name = root["Name"].asString(); |
| const int age = root["Age"].asInt(); |
| |
| std::cout << name << std::endl; |
| std::cout << age << std::endl; |
| return EXIT_SUCCESS; |
| } |