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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.
*/
#include "config-file.hpp"
#include <boost/property_tree/ini_parser.hpp>
#include <boost/filesystem.hpp>
namespace ndn {
ConfigFile::ConfigFile()
: m_path(findConfigFile())
{
if (open())
{
parse();
close();
}
}
ConfigFile::~ConfigFile()
{
if (m_input.is_open())
{
m_input.close();
}
}
boost::filesystem::path
ConfigFile::findConfigFile()
{
using namespace boost::filesystem;
path home(std::getenv("HOME"));
if (!home.empty())
{
home /= ".ndn/client.conf";
if (exists(home))
{
return absolute(home);
}
}
#ifdef NDN_CXX_SYSCONFDIR
path sysconfdir(NDN_CXX_SYSCONFDIR);
sysconfdir /= "ndn/client.conf";
if (exists(sysconfdir))
{
return absolute(sysconfdir);
}
#endif // NDN_CXX_SYSCONFDIR
path etc("/etc/ndn/client.conf");
if (exists(etc))
{
return absolute(etc);
}
return path();
}
bool
ConfigFile::open()
{
if (m_path.empty())
{
return false;
}
m_input.open(m_path.c_str());
if (!m_input.good() || !m_input.is_open())
{
return false;
}
return true;
}
void
ConfigFile::close()
{
if (m_input.is_open())
{
m_input.close();
}
}
const ConfigFile::Parsed&
ConfigFile::parse()
{
if (m_path.empty())
{
throw Error("Failed to locate configuration file for parsing");
}
else if (!m_input.is_open() && !open())
{
throw Error("Failed to open configuration file for parsing");
}
try
{
boost::property_tree::read_ini(m_input, m_config);
}
catch (boost::property_tree::ini_parser_error& error)
{
std::stringstream msg;
msg << "Failed to parse configuration file";
msg << " " << m_path;
msg << " " << error.message() << " line " << error.line();
throw Error(msg.str());
}
return m_config;
}
}