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/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/**
* Copyright (C) 2014 Named Data Networking Project
* See COPYING for copyright and distribution information.
*/
#ifndef NDN_MANAGEMENT_CONFIG_FILE_HPP
#define NDN_MANAGEMENT_CONFIG_FILE_HPP
#include "../common.hpp"
#include <boost/property_tree/ptree.hpp>
#include <boost/filesystem.hpp>
namespace ndn {
class ConfigFile : noncopyable
{
public:
class Error : public std::runtime_error
{
public:
Error(const std::string& what)
: std::runtime_error(what)
{
}
};
typedef boost::property_tree::ptree Parsed;
/**
* Locate, open, and parse a library configuration file.
*
* @throws ConfigFile::Error on parse error
*/
ConfigFile();
~ConfigFile();
const boost::filesystem::path&
getPath() const;
const Parsed&
getParsedConfiguration() const;
private:
bool
open();
void
close();
/**
* Parse a previously discovered and opened configuration file.
* For convenience this method will attempt to open the file
* if it has previously been located, but open() has not been called.
*
* @throws ConfigFile::Error on parse error
* @throws ConfigFile::Error on failure to open previously un-open configuration file
* @throws ConfigFile::Error if no configuration file was previously located
*/
const Parsed&
parse();
/**
* Looking for the configuration file in these well-known locations:
*
* 1. $HOME/.ndn/client.conf
* 2. @SYSCONFDIR@/ndn/client.conf
* 3. /etc/ndn/client.conf
*
* @return path to preferred configuration (according to above order) or empty path on failure
*/
boost::filesystem::path
findConfigFile();
private:
boost::filesystem::path m_path; // absolute path to active configuration file (if any)
std::ifstream m_input;
Parsed m_config;
};
inline const boost::filesystem::path&
ConfigFile::getPath() const
{
return m_path;
}
inline const ConfigFile::Parsed&
ConfigFile::getParsedConfiguration() const
{
return m_config;
}
} // namespace ndn
#endif // NDN_MANAGEMENT_CONFIG_FILE_HPP