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/*
* This file is part of smolbote. It's copyrighted by the contributors recorded
* in the version control history of the file, available from its original
* location: https://neueland.iserlohn-fortress.net/smolbote.hg
*
* SPDX-License-Identifier: GPL-3.0
*/
#ifndef CONFIGURATION_H
#define CONFIGURATION_H
#include <libconfig.h++>
#include <optional>
#include <string>
#include <vector>
class Configuration
{
public:
explicit Configuration(const std::string &path, const std::string &home);
~Configuration();
bool read();
bool parse(const std::string &contents);
bool writeIfNeeded(const std::string &path = std::string());
bool parseDefaultConfiguration(const std::string &contents);
std::vector<std::string> childrenSettings(const char *name = "");
std::vector<std::string> childrenGroups(const char *name = "");
void resetValue(const char *path);
template <typename T>
std::optional<T> value(const char *path) const
{
// if setting doesn't exist, give back a nullopt
if(!m_userCfg->exists(path)) {
const_cast<Configuration *>(this)->resetValue(path);
return value<T>(path);
}
const libconfig::Setting &v = m_userCfg->lookup(path);
if constexpr(std::is_same_v<T, std::string>)
return std::optional<std::string>(castToString(v));
else
return std::optional<T>(static_cast<T>(v));
}
template <typename T>
bool setValue(std::string path, const T &val);
private:
std::string castToString(const libconfig::Setting &v) const;
bool changed = false;
std::string m_homePath;
std::string m_userCfgPath;
libconfig::Config *m_userCfg, *m_defaultCfg;
};
// replace ~ with home
std::string patchHome(const std::string &path, const std::string &home);
// instantiate functions
// this needs to be done because the implementation is in the cpp file
// Settings::setValue<>
extern template bool Configuration::setValue<int>(std::string path, const int &val);
extern template bool Configuration::setValue<unsigned int>(std::string path, const unsigned int &val);
extern template bool Configuration::setValue<long>(std::string path, const long &val);
extern template bool Configuration::setValue<unsigned long>(std::string path, const unsigned long &val);
extern template bool Configuration::setValue<long long>(std::string path, const long long &val);
extern template bool Configuration::setValue<unsigned long long>(std::string path, const unsigned long long &val);
extern template bool Configuration::setValue<float>(std::string path, const float &val);
extern template bool Configuration::setValue<double>(std::string path, const double &val);
extern template bool Configuration::setValue<bool>(std::string path, const bool &val);
extern template bool Configuration::setValue<std::string>(std::string path, const std::string &val);
#endif // CONFIGURATION_H
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