view include/core/json.h @ 347:a0aa8c8c4307

dep/anitomy: port to use UCS-4 rather than wide strings rationale: wide strings are not the same on every platform, and might not even be Unicode. (while they usually are, its possible that they are not) I was *going* to change StringToInt to use a string stream, but outputting to an integer doesn't seem to work at all with UCS-4, even though it ought to, so I just rolled my own that uses the arabic digits only.
author Paper <paper@paper.us.eu.org>
date Sun, 23 Jun 2024 10:32:09 -0400
parents 1686fac290c5
children
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#ifndef MINORI_CORE_JSON_H_
#define MINORI_CORE_JSON_H_

#include "json/json.hpp"

#include <optional>

namespace nlohmann {

template<typename T>
void to_json(nlohmann::json& j, const std::optional<T>& v) {
	if (v.has_value())
		j = v.value();
	else
		j = nullptr;
}

template<typename T>
void from_json(const nlohmann::json& j, std::optional<T>& v) {
	v = j.is_null() ? std::nullopt : j.get<T>();
}

} // namespace nlohmann

namespace JSON {

template<typename T = std::string>
T GetString(const nlohmann::json& json, const nlohmann::json::json_pointer& ptr, T def) {
	if (json.contains(ptr) && json[ptr].is_string())
		return json[ptr].get<T>();
	else
		return def;
}

template<typename T = int>
T GetNumber(const nlohmann::json& json, const nlohmann::json::json_pointer& ptr, T def = 0) {
	if (json.contains(ptr) && json[ptr].is_number())
		return json[ptr].get<T>();
	else
		return def;
}

template<typename T = std::vector<std::string>>
T GetArray(const nlohmann::json& json, const nlohmann::json::json_pointer& ptr, T def = 0) {
	if (json.contains(ptr) && json[ptr].is_array())
		return json[ptr].get<T>();
	else
		return def;
}

nlohmann::json GetValue(const nlohmann::json& json, const nlohmann::json::json_pointer& ptr);
bool GetBoolean(const nlohmann::json& json, const nlohmann::json::json_pointer& ptr, bool def = false);

} // namespace JSON

#endif // MINORI_CORE_JSON_H_