ceph/src/boost/boost/winapi/environment.hpp

   1 /*
   2  * Copyright 2016 Klemens D. Morgenstern
   3  *
   4  * Distributed under the Boost Software License, Version 1.0.
   5  * See http://www.boost.org/LICENSE_1_0.txt
   6  */
   7
   8 #ifndef BOOST_WINAPI_ENVIRONMENT_HPP_INCLUDED_
   9 #define BOOST_WINAPI_ENVIRONMENT_HPP_INCLUDED_
  10
  11 #include <boost/winapi/basic_types.hpp>
  12
  13 #ifdef BOOST_HAS_PRAGMA_ONCE
  14 #pragma once
  15 #endif
  16
  17 #if BOOST_WINAPI_PARTITION_DESKTOP || BOOST_WINAPI_PARTITION_SYSTEM
  18
  19 #include <boost/winapi/detail/header.hpp>
  20
  21 #if defined(GetEnvironmentStrings)
  22 // Unlike most of the WinAPI, GetEnvironmentStrings is a real function and GetEnvironmentStringsA is a macro.
  23 // In UNICODE builds, GetEnvironmentStrings is also defined as a macro that redirects to GetEnvironmentStringsW,
  24 // and the narrow character version become inaccessible. Facepalm.
  25 #if defined(_MSC_VER) || defined(__GNUC__)
  26 #pragma push_macro("GetEnvironmentStrings")
  27 #endif
  28 #undef GetEnvironmentStrings
  29 #define BOOST_WINAPI_DETAIL_GET_ENVIRONMENT_STRINGS_UNDEFINED
  30 #endif // defined(GetEnvironmentStrings)
  31
  32 #if !defined( BOOST_USE_WINDOWS_H )
  33 extern "C" {
  34 #if !defined( BOOST_NO_ANSI_APIS )
  35 BOOST_WINAPI_IMPORT boost::winapi::LPSTR_ BOOST_WINAPI_WINAPI_CC GetEnvironmentStrings();
  36 BOOST_WINAPI_IMPORT boost::winapi::BOOL_ BOOST_WINAPI_WINAPI_CC FreeEnvironmentStringsA(boost::winapi::LPSTR_);
  37
  38 BOOST_WINAPI_IMPORT boost::winapi::DWORD_ BOOST_WINAPI_WINAPI_CC GetEnvironmentVariableA(
  39     boost::winapi::LPCSTR_ lpName,
  40     boost::winapi::LPSTR_ lpBuffer,
  41     boost::winapi::DWORD_ nSize
  42 );
  43
  44 BOOST_WINAPI_IMPORT boost::winapi::BOOL_ BOOST_WINAPI_WINAPI_CC SetEnvironmentVariableA(
  45     boost::winapi::LPCSTR_ lpName,
  46     boost::winapi::LPCSTR_ lpValue
  47 );
  48 #endif // !defined( BOOST_NO_ANSI_APIS )
  49
  50 BOOST_WINAPI_IMPORT boost::winapi::LPWSTR_ BOOST_WINAPI_WINAPI_CC GetEnvironmentStringsW();
  51 BOOST_WINAPI_IMPORT boost::winapi::BOOL_ BOOST_WINAPI_WINAPI_CC FreeEnvironmentStringsW(boost::winapi::LPWSTR_);
  52
  53 BOOST_WINAPI_IMPORT boost::winapi::DWORD_ BOOST_WINAPI_WINAPI_CC GetEnvironmentVariableW(
  54     boost::winapi::LPCWSTR_ lpName,
  55     boost::winapi::LPWSTR_ lpBuffer,
  56     boost::winapi::DWORD_ nSize
  57 );
  58
  59 BOOST_WINAPI_IMPORT boost::winapi::BOOL_ BOOST_WINAPI_WINAPI_CC SetEnvironmentVariableW(
  60     boost::winapi::LPCWSTR_ lpName,
  61     boost::winapi::LPCWSTR_ lpValue
  62 );
  63 } // extern "C"
  64 #endif // !defined( BOOST_USE_WINDOWS_H )
  65
  66 namespace boost {
  67 namespace winapi {
  68
  69 #if !defined( BOOST_NO_ANSI_APIS )
  70 using ::GetEnvironmentStrings;
  71 using ::FreeEnvironmentStringsA;
  72 using ::GetEnvironmentVariableA;
  73 using ::SetEnvironmentVariableA;
  74 #endif // !defined( BOOST_NO_ANSI_APIS )
  75
  76 using ::GetEnvironmentStringsW;
  77 using ::FreeEnvironmentStringsW;
  78 using ::GetEnvironmentVariableW;
  79 using ::SetEnvironmentVariableW;
  80
  81 template< typename Char >
  82 Char* get_environment_strings();
  83
  84 #if !defined( BOOST_NO_ANSI_APIS )
  85
  86 template< >
  87 BOOST_FORCEINLINE char* get_environment_strings< char >()
  88 {
  89     return GetEnvironmentStrings();
  90 }
  91
  92 BOOST_FORCEINLINE BOOL_ free_environment_strings(LPSTR_ p)
  93 {
  94     return FreeEnvironmentStringsA(p);
  95 }
  96
  97 BOOST_FORCEINLINE DWORD_ get_environment_variable(LPCSTR_ name, LPSTR_ buffer, DWORD_ size)
  98 {
  99     return GetEnvironmentVariableA(name, buffer, size);
 100 }
 101
 102 BOOST_FORCEINLINE BOOL_ set_environment_variable(LPCSTR_ name, LPCSTR_ value)
 103 {
 104     return SetEnvironmentVariableA(name, value);
 105 }
 106
 107 #endif // !defined( BOOST_NO_ANSI_APIS )
 108
 109 template< >
 110 BOOST_FORCEINLINE wchar_t* get_environment_strings< wchar_t >()
 111 {
 112     return GetEnvironmentStringsW();
 113 }
 114
 115 BOOST_FORCEINLINE BOOL_ free_environment_strings(LPWSTR_ p)
 116 {
 117     return FreeEnvironmentStringsW(p);
 118 }
 119
 120 BOOST_FORCEINLINE DWORD_ get_environment_variable(LPCWSTR_ name, LPWSTR_ buffer, DWORD_ size)
 121 {
 122     return GetEnvironmentVariableW(name, buffer, size);
 123 }
 124
 125 BOOST_FORCEINLINE BOOL_ set_environment_variable(LPCWSTR_ name, LPCWSTR_ value)
 126 {
 127     return SetEnvironmentVariableW(name, value);
 128 }
 129
 130 } // namespace winapi
 131 } // namespace boost
 132
 133 #if defined(BOOST_WINAPI_DETAIL_GET_ENVIRONMENT_STRINGS_UNDEFINED)
 134 #if defined(_MSC_VER) || defined(__GNUC__)
 135 #pragma pop_macro("GetEnvironmentStrings")
 136 #elif defined(UNICODE)
 137 #define GetEnvironmentStrings GetEnvironmentStringsW
 138 #endif
 139 #undef BOOST_WINAPI_DETAIL_GET_ENVIRONMENT_STRINGS_UNDEFINED
 140 #endif // defined(BOOST_WINAPI_DETAIL_GET_ENVIRONMENT_STRINGS_UNDEFINED)
 141
 142 #include <boost/winapi/detail/footer.hpp>
 143
 144 #endif // BOOST_WINAPI_PARTITION_DESKTOP || BOOST_WINAPI_PARTITION_SYSTEM
 145
 146 #endif // BOOST_WINAPI_ENVIRONMENT_HPP_INCLUDED_