1// Copyright 2010 The Kyua Authors. 2// All rights reserved. 3// 4// Redistribution and use in source and binary forms, with or without 5// modification, are permitted provided that the following conditions are 6// met: 7// 8// * Redistributions of source code must retain the above copyright 9// notice, this list of conditions and the following disclaimer. 10// * Redistributions in binary form must reproduce the above copyright 11// notice, this list of conditions and the following disclaimer in the 12// documentation and/or other materials provided with the distribution. 13// * Neither the name of Google Inc. nor the names of its contributors 14// may be used to endorse or promote products derived from this software 15// without specific prior written permission. 16// 17// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 18// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 19// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 20// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 21// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 22// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 23// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 27// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 29/// \file utils/env.hpp 30/// Querying and manipulation of environment variables. 31/// 32/// These utility functions wrap the system functions to manipulate the 33/// environment in a portable way and expose their arguments and return values 34/// in a C++-friendly manner. 35 36#if !defined(UTILS_ENV_HPP) 37#define UTILS_ENV_HPP 38 39#include <map> 40#include <string> 41 42#include "utils/fs/path_fwd.hpp" 43#include "utils/optional_fwd.hpp" 44 45namespace utils { 46 47 48std::map< std::string, std::string > getallenv(void); 49optional< std::string > getenv(const std::string&); 50std::string getenv_with_default(const std::string&, const std::string&); 51optional< utils::fs::path > get_home(void); 52void setenv(const std::string&, const std::string&); 53void unsetenv(const std::string&); 54 55 56} // namespace utils 57 58#endif // !defined(UTILS_ENV_HPP) 59