Initial work for G-code sender and more intensive usage of Boost

xs/include/boost/test/utils/runtime/env/environment.ipp

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+//  (C) Copyright Gennadiy Rozental 2005-2008.
+//  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: 57992 $
+//
+//  Description : implements model of program environment 
+// ***************************************************************************
+
+#ifndef BOOST_RT_ENV_ENVIRONMENT_IPP_062904GER
+#define BOOST_RT_ENV_ENVIRONMENT_IPP_062904GER
+
+// Boost.Runtime.Parameter
+#include <boost/test/utils/runtime/config.hpp>
+#include <boost/test/utils/runtime/validation.hpp>
+
+#include <boost/test/utils/runtime/env/variable.hpp>
+
+// Boost.Test
+#include <boost/test/utils/basic_cstring/compare.hpp>
+#include <boost/test/utils/basic_cstring/io.hpp>
+
+// STL
+#include <map>
+#include <list>
+
+namespace boost {
+
+namespace BOOST_RT_PARAM_NAMESPACE {
+
+namespace environment {
+
+// ************************************************************************** //
+// **************             runtime::environment             ************** //
+// ************************************************************************** //
+
+namespace rt_env_detail {
+
+typedef std::map<cstring,rt_env_detail::variable_data> registry;
+typedef std::list<dstring> keys;
+
+BOOST_RT_PARAM_INLINE registry& s_registry()    { static registry instance; return instance; }
+BOOST_RT_PARAM_INLINE keys&     s_keys()        { static keys instance; return instance; }
+
+BOOST_RT_PARAM_INLINE variable_data&
+new_var_record( cstring var_name )
+{
+    // save the name in list of keys
+    s_keys().push_back( dstring() );
+    dstring& key = s_keys().back();
+    assign_op( key, var_name, 0 );
+
+    // create and return new record
+    variable_data& new_var_data = s_registry()[key];
+    
+    new_var_data.m_var_name = key;
+    
+    return new_var_data;
+}
+
+//____________________________________________________________________________//
+
+BOOST_RT_PARAM_INLINE variable_data*
+find_var_record( cstring var_name )
+{
+    registry::iterator it = s_registry().find( var_name );
+
+    return it == s_registry().end() ? 0 : &(it->second);
+}
+
+//____________________________________________________________________________//
+
+#ifdef BOOST_MSVC 
+#pragma warning(push) 
+#pragma warning(disable:4996) // getenv
+#endif
+
+BOOST_RT_PARAM_INLINE cstring
+sys_read_var( cstring var_name )
+{
+    using namespace std;
+    return BOOST_RT_PARAM_GETENV( var_name.begin() );
+}
+
+#ifdef BOOST_MSVC 
+#pragma warning(pop) 
+#endif
+//____________________________________________________________________________//
+
+BOOST_RT_PARAM_INLINE void
+sys_write_var( cstring var_name, format_stream& var_value )
+{
+    BOOST_RT_PARAM_PUTENV( var_name, cstring( var_value.str() ) );
+}
+
+//____________________________________________________________________________//
+
+} // namespace rt_env_detail
+
+BOOST_RT_PARAM_INLINE variable_base
+var( cstring var_name )
+{
+    rt_env_detail::variable_data* vd = rt_env_detail::find_var_record( var_name );
+
+    BOOST_RT_PARAM_VALIDATE_LOGIC( !!vd,
+                                   BOOST_RT_PARAM_LITERAL( "First access to the environment variable " ) 
+                                        << var_name << BOOST_RT_PARAM_LITERAL( " should be typed" ) );
+
+    return variable_base( *vd );
+}
+
+//____________________________________________________________________________//
+
+} // namespace environment
+
+} // namespace BOOST_RT_PARAM_NAMESPACE
+
+} // namespace boost
+
+#endif // BOOST_RT_ENV_ENVIRONMENT_IPP_062904GER