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#include <config/config.hpp>
#include <iostream>
#include <sstream>
#include <stdlib.h>
std::string Config::filename{};
bool Config::file_must_exist = false;
std::string Config::get(const std::string& option, const std::string& def)
{
Config* self = Config::instance().get();
auto it = self->values.find(option);
if (it == self->values.end())
return def;
return it->second;
}
int Config::get_int(const std::string& option, const int& def)
{
Config* self = Config::instance().get();
std::string res = self->get(option, "");
if (!res.empty())
return atoi(res.c_str());
else
return def;
}
void Config::set(const std::string& option, const std::string& value, bool save)
{
Config* self = Config::instance().get();
self->values[option] = value;
if (save)
{
self->save_to_file();
self->trigger_configuration_change();
}
}
void Config::connect(t_config_changed_callback callback)
{
Config* self = Config::instance().get();
self->callbacks.push_back(callback);
}
void Config::close()
{
Config* self = Config::instance().get();
self->values.clear();
Config::instance().reset();
}
/**
* Private methods
*/
void Config::trigger_configuration_change()
{
std::vector<t_config_changed_callback>::iterator it;
for (it = this->callbacks.begin(); it < this->callbacks.end(); ++it)
(*it)();
}
std::unique_ptr<Config>& Config::instance()
{
static std::unique_ptr<Config> instance;
if (!instance)
{
instance = std::make_unique<Config>();
instance->read_conf();
}
return instance;
}
bool Config::read_conf()
{
std::ifstream file;
file.open(filename.data());
if (!file.is_open())
{
if (Config::file_must_exist)
{
perror(("Error while opening file " + filename + " for reading.").c_str());
file.exceptions(std::ifstream::failbit);
}
return false;
}
std::string line;
size_t pos;
std::string option;
std::string value;
while (file.good())
{
std::getline(file, line);
if (line == "" || line[0] == '#')
continue ;
pos = line.find('=');
if (pos == std::string::npos)
continue ;
option = line.substr(0, pos);
value = line.substr(pos+1);
this->values[option] = value;
}
return true;
}
void Config::save_to_file() const
{
std::ofstream file(this->filename.data());
if (file.fail())
{
std::cerr << "Could not save config file." << std::endl;
return ;
}
for (auto& it: this->values)
file << it.first << "=" << it.second << std::endl;
file.close();
}
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