Improve the process for GNU tools
[minix3.git] / external / bsd / kyua-cli / dist / utils / env.hpp
blobac76bd1b8a9cfed0b1a851d2f8f6a5802f45b9c9
1 // Copyright 2010 Google Inc.
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.
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.
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.
36 #if !defined(UTILS_ENV_HPP)
37 #define UTILS_ENV_HPP
39 #include <map>
40 #include <string>
42 #include "utils/optional.hpp"
44 namespace utils {
47 std::map< std::string, std::string > getallenv(void);
48 optional< std::string > getenv(const std::string&);
49 std::string getenv_with_default(const std::string&, const std::string&);
50 void setenv(const std::string&, const std::string&);
51 void unsetenv(const std::string&);
54 } // namespace utils
56 #endif // !defined(UTILS_ENV_HPP)