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https://github.com/SatDump/SatDump
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93 lines
2.6 KiB
C++
93 lines
2.6 KiB
C++
#include "json.hpp"
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#include <fstream>
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#include <filesystem>
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nlohmann::ordered_json loadJsonFile(std::string path)
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{
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nlohmann::ordered_json j;
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if (std::filesystem::exists(path))
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{
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std::ifstream istream(path);
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istream >> j;
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istream.close();
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}
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return j;
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}
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void saveJsonFile(std::string path, nlohmann::ordered_json j)
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{
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std::ofstream ostream(path);
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ostream << j.dump(4);
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ostream.close();
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}
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void saveCborFile(std::string path, nlohmann::ordered_json j)
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{
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std::ofstream ostream(path);
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auto v = nlohmann::json::to_cbor(j);
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ostream.write((char *)v.data(), v.size());
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ostream.close();
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}
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nlohmann::ordered_json merge_json_diffs(nlohmann::ordered_json master, nlohmann::ordered_json diff)
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{
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nlohmann::ordered_json output = master;
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for (nlohmann::detail::iteration_proxy_value<nlohmann::detail::iter_impl<nlohmann::ordered_json>> cfg : diff.items())
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{
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if (master.contains(cfg.key()) && cfg.value().is_null())
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output.erase(cfg.key());
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else if (master.contains(cfg.key()) && cfg.value().is_object())
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output[cfg.key()] = merge_json_diffs(master[cfg.key()], cfg.value());
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else
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output[cfg.key()] = cfg.value();
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}
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return output;
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}
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nlohmann::ordered_json perform_json_diff(nlohmann::ordered_json master, nlohmann::ordered_json modified)
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{
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nlohmann::ordered_json diff;
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// Look for items that have changed
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for (nlohmann::detail::iteration_proxy_value<nlohmann::detail::iter_impl<nlohmann::ordered_json>> cfg : modified.items())
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{
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if (master[cfg.key()] != cfg.value())
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{
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if (cfg.value().is_object())
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{
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nlohmann::ordered_json objDiff = perform_json_diff(master[cfg.key()], cfg.value());
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if (!objDiff.is_null())
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diff[cfg.key()] = objDiff;
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}
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else
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diff[cfg.key()] = cfg.value();
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}
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}
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// Look for items that have been removed
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for (nlohmann::detail::iteration_proxy_value<nlohmann::detail::iter_impl<nlohmann::ordered_json>> cfg : master.items())
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if(!modified.contains(cfg.key()))
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diff[cfg.key()] = nullptr;
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return diff;
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}
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nlohmann::ordered_json loadCborFile(std::string path)
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{
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// Read file
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std::vector<uint8_t> cbor_data;
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std::ifstream in_file(path, std::ios::binary);
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while (!in_file.eof())
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{
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uint8_t b;
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in_file.read((char *)&b, 1);
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cbor_data.push_back(b);
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}
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in_file.close();
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cbor_data.pop_back();
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return nlohmann::json::from_cbor(cbor_data);
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}
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