ceph/src/boost/boost/test/utils/runtime/env/fetch.hpp

   1 //  (C) Copyright Gennadiy Rozental 2001.
   2 //  Distributed under the Boost Software License, Version 1.0.
   3 //  (See accompanying file LICENSE_1_0.txt or copy at
   4 //  http://www.boost.org/LICENSE_1_0.txt)
   5
   6 //  See http://www.boost.org/libs/test for the library home page.
   7 //
   8 //  File        : $RCSfile$
   9 //
  10 //  Version     : $Revision$
  11 //
  12 //  Description : implements fetching absent parameter athuments from environment
  13 // ***************************************************************************
  14
  15 #ifndef BOOST_TEST_UTILS_RUNTIME_ENV_FETCH_HPP
  16 #define BOOST_TEST_UTILS_RUNTIME_ENV_FETCH_HPP
  17
  18 // Boost.Test Runtime parameters
  19 #include <boost/test/utils/runtime/parameter.hpp>
  20 #include <boost/test/utils/runtime/argument.hpp>
  21
  22 #include <boost/test/detail/suppress_warnings.hpp>
  23
  24 // C Runtime
  25 #include <stdlib.h>
  26
  27 namespace boost {
  28 namespace runtime {
  29 namespace env {
  30
  31 namespace env_detail {
  32
  33 #ifndef UNDER_CE
  34
  35 #ifdef BOOST_MSVC
  36 #pragma warning(push)
  37 #pragma warning(disable:4996) // getenv
  38 #endif
  39
  40 inline std::pair<cstring,bool>
  41 sys_read_var( cstring var_name )
  42 {
  43     using namespace std;
  44     char const* res = getenv( var_name.begin() );
  45
  46     return std::make_pair( cstring(res), res != NULL );
  47 }
  48
  49 #ifdef BOOST_MSVC
  50 #pragma warning(pop)
  51 #endif
  52
  53 #else
  54
  55 inline std::pair<cstring,bool>
  56 sys_read_var( cstring var_name )
  57 {
  58     return std::make_pair( cstring(), false );
  59 }
  60
  61 #endif
  62
  63 //____________________________________________________________________________//
  64
  65 template<typename ReadFunc>
  66 inline void
  67 fetch_absent( parameters_store const& params, runtime::arguments_store& args, ReadFunc read_func )
  68 {
  69     BOOST_TEST_FOREACH( parameters_store::storage_type::value_type const&, v, params.all() ) {
  70         basic_param_ptr param = v.second;
  71
  72         if( args.has( param->p_name ) || param->p_env_var.empty() )
  73             continue;
  74
  75         std::pair<cstring,bool> value = read_func( param->p_env_var );
  76
  77         if( !value.second )
  78             continue;
  79
  80         // Validate against unexpected empty value
  81         BOOST_TEST_I_ASSRT( !value.first.is_empty() || param->p_has_optional_value,
  82             format_error( param->p_name )
  83                 << "Missing an argument value for the parameter " << param->p_name
  84                 << " in the environment." );
  85
  86         // Produce argument value
  87         param->produce_argument( value.first, false, args );
  88
  89     }
  90 }
  91
  92 //____________________________________________________________________________//
  93
  94 } // namespace env_detail
  95
  96 inline void
  97 fetch_absent( parameters_store const& params, runtime::arguments_store& args )
  98 {
  99     env_detail::fetch_absent( params, args, &env_detail::sys_read_var );
 100 }
 101
 102 } // namespace env
 103 } // namespace runtime
 104 } // namespace boost
 105
 106 #include <boost/test/detail/enable_warnings.hpp>
 107
 108 #endif // BOOST_TEST_UTILS_RUNTIME_ENV_FETCH_HPP