mirror of
https://github.com/PurpleI2P/i2pd.git
synced 2024-11-16 00:12:43 +00:00
108 lines
3.1 KiB
C++
108 lines
3.1 KiB
C++
#ifndef CONFIG_H
|
|
#define CONFIG_H
|
|
|
|
#include <string>
|
|
#include <boost/program_options/options_description.hpp>
|
|
#include <boost/program_options/variables_map.hpp>
|
|
|
|
/**
|
|
* Functions to parse and store i2pd parameters
|
|
*
|
|
* General usage flow:
|
|
* Init() -- early as possible
|
|
* ParseCmdline() -- somewhere close to main()
|
|
* ParseConfig() -- after detecting path to config
|
|
* Finalize() -- right after all Parse*() functions called
|
|
* GetOption() -- may be called after Finalize()
|
|
*/
|
|
|
|
namespace i2p {
|
|
namespace config {
|
|
extern boost::program_options::variables_map m_Options;
|
|
|
|
/**
|
|
* @brief Initialize list of acceptable parameters
|
|
*
|
|
* Should be called before any Parse* functions.
|
|
*/
|
|
void Init();
|
|
|
|
/**
|
|
* @brief Parse cmdline parameters, and show help if requested
|
|
* @param argc Cmdline arguments count, should be passed from main().
|
|
* @param argv Cmdline parameters array, should be passed from main()
|
|
*
|
|
* If --help is given in parameters, shows it's list with description
|
|
* terminates the program with exitcode 0.
|
|
*
|
|
* In case of parameter misuse boost throws an exception.
|
|
* We internally handle type boost::program_options::unknown_option,
|
|
* and then terminate program with exitcode 1.
|
|
*
|
|
* Other exceptions will be passed to higher level.
|
|
*/
|
|
void ParseCmdline(int argc, char* argv[]);
|
|
|
|
/**
|
|
* @brief Load and parse given config file
|
|
* @param path Path to config file
|
|
*
|
|
* If error occured when opening file path is points to,
|
|
* we show the error message and terminate program.
|
|
*
|
|
* In case of parameter misuse boost throws an exception.
|
|
* We internally handle type boost::program_options::unknown_option,
|
|
* and then terminate program with exitcode 1.
|
|
*
|
|
* Other exceptions will be passed to higher level.
|
|
*/
|
|
void ParseConfig(const std::string& path);
|
|
|
|
/**
|
|
* @brief Used to combine options from cmdline, config and default values
|
|
*/
|
|
void Finalize();
|
|
|
|
/* @brief Accessor to parameters by name
|
|
* @param name Name of the requested parameter
|
|
* @param value Variable where to store option
|
|
* @return this function returns false if parameter not found
|
|
*
|
|
* Example: uint16_t port; GetOption("sam.port", port);
|
|
*/
|
|
template<typename T>
|
|
bool GetOption(const char *name, T& value) {
|
|
if (!m_Options.count(name))
|
|
return false;
|
|
value = m_Options[name].as<T>();
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* @brief Set value of given parameter
|
|
* @param name Name of settable parameter
|
|
* @param value New parameter value
|
|
* @return true if value set up successful, false otherwise
|
|
*
|
|
* Example: uint16_t port = 2827; SetOption("bob.port", port);
|
|
*/
|
|
template<typename T>
|
|
bool SetOption(const char *name, const T& value) {
|
|
if (!m_Options.count(name))
|
|
return false;
|
|
m_Options.at(name).value() = value;
|
|
notify(m_Options);
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* @brief Check is value explicitly given or default
|
|
* @param name Name of checked parameter
|
|
* @return true if value set to default, false othervise
|
|
*/
|
|
bool IsDefault(const char *name);
|
|
}
|
|
}
|
|
|
|
#endif // CONFIG_H
|