598bfd3f
 Hu Chunming
提交_GLIBCXX_USE_CX...
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//
// Copyright (c) 2012 Artyom Beilis (Tonkikh)
//
// Distributed under the Boost Software License, Version 1.0.
// https://www.boost.org/LICENSE_1_0.txt
#ifndef BOOST_NOWIDE_CSTDLIB_HPP_INCLUDED
#define BOOST_NOWIDE_CSTDLIB_HPP_INCLUDED
#include <boost/nowide/config.hpp>
#if !defined(BOOST_WINDOWS)
#include <cstdlib>
#endif
namespace boost {
namespace nowide {
#if !defined(BOOST_WINDOWS) && !defined(BOOST_NOWIDE_DOXYGEN)
using std::getenv;
using std::system;
#else
///
/// \brief UTF-8 aware getenv. Returns 0 if the variable is not set.
///
/// This function is not thread safe or reenterable as defined by the standard library
///
BOOST_NOWIDE_DECL char* getenv(const char* key);
///
/// Same as std::system but cmd is UTF-8.
///
BOOST_NOWIDE_DECL int system(const char* cmd);
#endif
///
/// \brief Set environment variable \a key to \a value
///
/// if overwrite is not 0, that the old value is always overwritten, otherwise,
/// if the variable exists it remains unchanged
///
/// \a key and \a value are UTF-8 on Windows
/// \return zero on success, else nonzero
///
BOOST_NOWIDE_DECL int setenv(const char* key, const char* value, int overwrite);
///
/// \brief Remove environment variable \a key
///
/// \a key is UTF-8 on Windows
/// \return zero on success, else nonzero
///
BOOST_NOWIDE_DECL int unsetenv(const char* key);
///
/// \brief Adds or changes an environment variable, \a string must be in format KEY=VALUE
///
/// \a string MAY become part of the environment, hence changes to the value MAY change
/// the environment. For portability it is hence recommended NOT to change it.
/// \a string is UTF-8 on Windows
/// \return zero on success, else nonzero
///
BOOST_NOWIDE_DECL int putenv(char* string);
} // namespace nowide
} // namespace boost
#endif
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