102 lines
1.5 KiB
C++
102 lines
1.5 KiB
C++
#include "helpers.h"
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#include <fstream>
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using nlohmann::json;
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using std::endl;
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using std::ifstream;
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using std::istream;
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using std::ostream;
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using std::string;
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bool read_config_json(json& cfg, const string& filename, ostream* log)
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{
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ifstream cfg_file(filename);
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if (!cfg_file.is_open())
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{
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if (nullptr != log)
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{
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*log << "Could not open config file" << endl;
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}
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return false;
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}
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return read_config_json(cfg, cfg_file, log);
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}
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bool read_config_json(json& cfg, istream& in, ostream* log)
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{
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// Parse with comments
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try
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{
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cfg = json::parse(in, nullptr, true, true);
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}
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catch (const std::exception &e)
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{
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if (nullptr != log)
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{
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*log << e.what() << endl;
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}
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return false;
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}
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return true;
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}
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bool json_extract(const json& j, const string& key, string& out)
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{
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bool result = false;
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if (j.contains(key) && j[key].is_string())
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{
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out = j[key];
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result = true;
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}
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return result;
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}
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bool json_extract(const json& j, const string& key, int& out)
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{
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bool result = false;
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if (j.contains(key) && j[key].is_number_integer())
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{
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out = j[key];
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result = true;
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}
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return result;
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}
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bool json_extract(const json& j, const string& key, bool& out)
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{
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bool result = false;
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if (j.contains(key) && j[key].is_boolean())
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{
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out = j[key];
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result = true;
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}
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return result;
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}
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bool json_extract(const json& j, const string& key, uint16_t& out)
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{
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bool result = false;
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if (j.contains(key) && j[key].is_number_integer())
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{
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if ((j[key] >= 0) && (j[key] <= UINT16_MAX))
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{
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out = j[key];
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result = true;
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}
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}
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return result;
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}
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