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+// (C) Copyright Gennadiy Rozental 2001.
+// Distributed under the Boost Software License, Version 1.0.
+// (See accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+
+// See http://www.boost.org/libs/test for the library home page.
+//
+// File : $RCSfile$
+//
+// Version : $Revision$
+//
+// Description : implements fetching absent parameter athuments from environment
+// ***************************************************************************
+
+#ifndef BOOST_TEST_UTILS_RUNTIME_ENV_FETCH_HPP
+#define BOOST_TEST_UTILS_RUNTIME_ENV_FETCH_HPP
+
+// Boost.Test Runtime parameters
+#include <boost/test/utils/runtime/parameter.hpp>
+#include <boost/test/utils/runtime/argument.hpp>
+
+#include <boost/test/detail/suppress_warnings.hpp>
+
+// C Runtime
+#include <stdlib.h>
+
+namespace boost {
+namespace runtime {
+namespace env {
+
+namespace env_detail {
+
+#ifndef UNDER_CE
+
+#ifdef BOOST_MSVC
+#pragma warning(push)
+#pragma warning(disable:4996) // getenv
+#endif
+
+inline std::pair<cstring,bool>
+sys_read_var( cstring var_name )
+{
+ using namespace std;
+ char const* res = getenv( var_name.begin() );
+
+ return std::make_pair( cstring(res), res != NULL );
+}
+
+#ifdef BOOST_MSVC
+#pragma warning(pop)
+#endif
+
+#else
+
+inline std::pair<cstring,bool>
+sys_read_var( cstring var_name )
+{
+ return std::make_pair( cstring(), false );
+}
+
+#endif
+
+//____________________________________________________________________________//
+
+template<typename ReadFunc>
+inline void
+fetch_absent( parameters_store const& params, runtime::arguments_store& args, ReadFunc read_func )
+{
+ BOOST_TEST_FOREACH( parameters_store::storage_type::value_type const&, v, params.all() ) {
+ basic_param_ptr param = v.second;
+
+ if( args.has( param->p_name ) || param->p_env_var.empty() )
+ continue;
+
+ std::pair<cstring,bool> value = read_func( param->p_env_var );
+
+ if( !value.second )
+ continue;
+
+ // Validate against unexpected empty value
+ BOOST_TEST_I_ASSRT( !value.first.is_empty() || param->p_has_optional_value,
+ format_error( param->p_name )
+ << "Missing an argument value for the parameter " << param->p_name
+ << " in the environment." );
+
+ // Produce argument value
+ param->produce_argument( value.first, false, args );
+
+ }
+}
+
+//____________________________________________________________________________//
+
+} // namespace env_detail
+
+inline void
+fetch_absent( parameters_store const& params, runtime::arguments_store& args )
+{
+ env_detail::fetch_absent( params, args, &env_detail::sys_read_var );
+}
+
+} // namespace env
+} // namespace runtime
+} // namespace boost
+
+#include <boost/test/detail/enable_warnings.hpp>
+
+#endif // BOOST_TEST_UTILS_RUNTIME_ENV_FETCH_HPP