JSON::Object stringify unicode to UTF8 format but parser can not handle it

[Lloyd-Pottiger]

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To Reproduce
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TEST(JSONParser, TestUnicode)
try
{
    String json_str = R"json({"default":"\u0050\u0050"})json";
    Poco::JSON::Parser parser;
    Poco::Dynamic::Var result = parser.parse(json_str);
    const auto & obj = result.extract<Poco::JSON::Object::Ptr>();
    auto default_val = obj->get("default");
    Poco::JSON::Object::Ptr json = new Poco::JSON::Object();
    json->set("default", default_val);
    std::stringstream ss;
    json->stringify(ss);
    std::cout << ss.str() << std::endl;
    ASSERT_TRUE(ss.str() == json_str);
}
CATCH

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• POCO Version
• Third-party product (eg. database or library) type and version

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[micheleselea]

This string is not UTF8 string, that is an escaped string
String json_str = R"json({"default":"\u0050\u0050"})json";

you have to unescape before to obtain the UTF8 string, something like
json_str_unescape = Poco::UTF8::unescape(json_str)

[Lloyd-Pottiger]

@micheleselea It seems not to work for the following case:

TEST(JSONParser, TestUnicode)
try
{
    String json_str = R"json({"default":"\u0007\u0007"})json";
    auto json_str_unescape = Poco::UTF8::unescape(json_str);
    Poco::JSON::Parser parser;
    Poco::Dynamic::Var result = parser.parse(json_str);
    const auto & obj = result.extract<Poco::JSON::Object::Ptr>();
    auto default_val = obj->get("default");
    Poco::JSON::Object::Ptr json = new Poco::JSON::Object();
    json->set("default", default_val);
    std::stringstream ss;
    json->stringify(ss);
    std::cout << ss.str() << std::endl;
    ASSERT_TRUE(ss.str() == json_str_unescape);
}
CATCH

The json generated by https://go.dev/play/p/6o6kX0vOIsW

[aleks-f]

@Lloyd-Pottiger of course it works. I'm not quite sure what the complaint is here. I'l move it to discussions