55 lines
1.4 KiB
C++
55 lines
1.4 KiB
C++
#include <iostream>
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#include <nlohmann/json-schema.hpp>
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using nlohmann::json;
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using nlohmann::json_schema::json_validator;
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// The schema is defined based upon a string literal
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static json uri_schema = R"(
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{
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"$schema": "http://json-schema.org/draft/2020-12/schema",
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"type": "object",
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"properties": {
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"myUri": {
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"type":"string",
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"format": "uri"
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}
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}
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})"_json;
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// The people are defined with brace initialization
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static json good_uri = {{"myUri", "http://hostname.com/"}};
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static json bad_uri = {{"myUri", "http:/hostname.com/"}};
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static void uri_format_checker(const std::string &format, const std::string &value)
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{
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if (format == "uri") {
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if (value.find("://") == std::string::npos)
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throw std::invalid_argument("URI does not contain :// - invalid");
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} else
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throw std::logic_error("Don't know how to validate " + format);
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}
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int main()
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{
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json_validator validator(nullptr, uri_format_checker); // create validator
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try {
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validator.set_root_schema(uri_schema); // insert root-schema
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} catch (const std::exception &e) {
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std::cerr << "Validation of schema failed, here is why: " << e.what() << "\n";
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return EXIT_FAILURE;
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}
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validator.validate(good_uri);
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try {
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validator.validate(bad_uri);
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} catch (const std::exception &e) {
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std::cerr << "Validation expectedly failed, here is why: " << e.what() << "\n";
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}
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return EXIT_SUCCESS;
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}
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