NS-3 based Named Data Networking (NDN) simulator
ndnSIM 2.0: NDN, CCN, CCNx, content centric networks
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config-file.cpp
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/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
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#include "
config-file.hpp
"
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#include <boost/property_tree/ini_parser.hpp>
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#include <boost/filesystem.hpp>
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namespace
ndn
{
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ConfigFile::ConfigFile
()
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: m_path(findConfigFile())
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{
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if
(open())
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{
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parse();
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close();
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}
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}
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ConfigFile::~ConfigFile
()
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{
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if
(m_input.is_open())
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{
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m_input.close();
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}
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}
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boost::filesystem::path
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ConfigFile::findConfigFile()
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{
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using namespace
boost::filesystem;
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#ifdef NDN_CXX_HAVE_TESTS
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if
(std::getenv(
"TEST_HOME"
))
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{
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path testHome(std::getenv(
"TEST_HOME"
));
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testHome /=
".ndn/client.conf"
;
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if
(exists(testHome))
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{
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return
absolute(testHome);
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}
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}
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#endif // NDN_CXX_HAVE_TESTS
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if
(std::getenv(
"HOME"
))
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{
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path home(std::getenv(
"HOME"
));
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home /=
".ndn/client.conf"
;
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if
(exists(home))
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{
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return
absolute(home);
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}
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}
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#ifdef NDN_CXX_SYSCONFDIR
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path sysconfdir(
NDN_CXX_SYSCONFDIR
);
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sysconfdir /=
"ndn/client.conf"
;
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if
(exists(sysconfdir))
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{
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return
absolute(sysconfdir);
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}
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#endif // NDN_CXX_SYSCONFDIR
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path etc(
"/etc/ndn/client.conf"
);
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if
(exists(etc))
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{
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return
absolute(etc);
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}
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return
path();
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}
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bool
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ConfigFile::open()
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{
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if
(m_path.empty())
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{
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return
false
;
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}
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m_input.open(m_path.c_str());
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if
(!m_input.good() || !m_input.is_open())
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{
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return
false
;
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}
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return
true
;
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}
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void
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ConfigFile::close()
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{
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if
(m_input.is_open())
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{
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m_input.close();
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}
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}
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const
ConfigFile::Parsed
&
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ConfigFile::parse()
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{
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if
(m_path.empty())
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{
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BOOST_THROW_EXCEPTION(
Error
(
"Failed to locate configuration file for parsing"
));
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}
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else
if
(!m_input.is_open() && !open())
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{
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BOOST_THROW_EXCEPTION(
Error
(
"Failed to open configuration file for parsing"
));
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}
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try
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{
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boost::property_tree::read_ini(m_input, m_config);
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}
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catch
(boost::property_tree::ini_parser_error& error)
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{
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std::stringstream msg;
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msg <<
"Failed to parse configuration file"
;
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msg <<
" "
<< m_path;
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msg <<
" "
<< error.message() <<
" line "
<< error.line();
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BOOST_THROW_EXCEPTION(
Error
(msg.str()));
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}
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return
m_config;
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}
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}
ndn
Copyright (c) 2011-2015 Regents of the University of California.
Definition:
ndn-strategy-choice-helper.hpp:34
ndn::ConfigFile::Parsed
boost::property_tree::ptree Parsed
Definition:
config-file.hpp:48
ndn::ConfigFile::~ConfigFile
~ConfigFile()
Definition:
config-file.cpp:39
NDN_CXX_SYSCONFDIR
#define NDN_CXX_SYSCONFDIR
Definition:
ndn-cxx-config.hpp:22
ndn::ConfigFile::ConfigFile
ConfigFile()
Locate, open, and parse a library configuration file.
Definition:
config-file.cpp:29
config-file.hpp
ndn::ConfigFile::Error
Definition:
config-file.hpp:38
ndnSIM
ndn-cxx
src
util
config-file.cpp
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