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//  (C) Copyright Gennadiy Rozental 2001.
//  (C) Copyright Beman Dawes 1995-2001.
//  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 : main function implementation for Program Executon Monitor
// ***************************************************************************

#ifndef BOOST_TEST_CPP_MAIN_IPP_012205GER
#define BOOST_TEST_CPP_MAIN_IPP_012205GER

// Boost.Test
#include <boost/test/execution_monitor.hpp>
#include <boost/test/detail/config.hpp>
#include <boost/test/utils/basic_cstring/io.hpp>

// Boost
#include <boost/cstdlib.hpp>    // for exit codes
#include <boost/config.hpp>     // for workarounds

// STL
#include <iostream>
#include <cstdlib>      // std::getenv
#include <cstring>      // std::strerror

#include <boost/test/detail/suppress_warnings.hpp>

//____________________________________________________________________________//

#ifdef BOOST_NO_STDC_NAMESPACE
namespace std { using ::getenv; using ::strerror; }
#endif

namespace {

struct cpp_main_caller {
    cpp_main_caller( int (*cpp_main_func)( int argc, char* argv[] ), int argc, char** argv )
    : m_cpp_main_func( cpp_main_func )
    , m_argc( argc )
    , m_argv( argv ) {}

    int     operator()() { return (*m_cpp_main_func)( m_argc, m_argv ); }

private:
    // Data members
    int     (*m_cpp_main_func)( int argc, char* argv[] );
    int     m_argc;
    char**  m_argv;
};

} // local namespace

// ************************************************************************** //
// **************             prg_exec_monitor_main            ************** //
// ************************************************************************** //

namespace boost {

int BOOST_TEST_DECL
prg_exec_monitor_main( int (*cpp_main)( int argc, char* argv[] ), int argc, char* argv[] )
{
    int result = 0;

    BOOST_TEST_I_TRY {
        boost::unit_test::const_string p( std::getenv( "BOOST_TEST_CATCH_SYSTEM_ERRORS" ) );
        ::boost::execution_monitor ex_mon;

        ex_mon.p_catch_system_errors.value = p != "no";

        result = ex_mon.execute( cpp_main_caller( cpp_main, argc, argv ) );

        if( result == 0 )
            result = ::boost::exit_success;
        else if( result != ::boost::exit_success ) {
            std::cout << "\n**** error return code: " << result << std::endl;
            result = ::boost::exit_failure;
        }
    }
    BOOST_TEST_I_CATCH( ::boost::execution_exception, exex ) {
        std::cout << "\n**** exception(" << exex.code() << "): " << exex.what() << std::endl;
        result = ::boost::exit_exception_failure;
    }
    BOOST_TEST_I_CATCH( ::boost::system_error, ex ) {
        std::cout << "\n**** failed to initialize execution monitor."
                  << "\n**** expression at fault: " << ex.p_failed_exp
                  << "\n**** error(" << ex.p_errno << "): " << std::strerror( ex.p_errno ) << std::endl;
        result = ::boost::exit_exception_failure;
    }

    if( result != ::boost::exit_success ) {
        std::cerr << "******** errors detected; see standard output for details ********" << std::endl;
    }
    else {
        //  Some prefer a confirming message when all is well, while others don't
        //  like the clutter.  Use an environment variable to avoid command
        //  line argument modifications; for use in production programs
        //  that's a no-no in some organizations.
        ::boost::unit_test::const_string p( std::getenv( "BOOST_PRG_MON_CONFIRM" ) );
        if( p != "no" ) {
            std::cerr << std::flush << "no errors detected" << std::endl;
        }
    }

    return result;
}

} // namespace boost

#if !defined(BOOST_TEST_DYN_LINK) && !defined(BOOST_TEST_NO_MAIN)

// ************************************************************************** //
// **************        main function for tests using lib     ************** //
// ************************************************************************** //

int cpp_main( int argc, char* argv[] );  // prototype for user's cpp_main()

int BOOST_TEST_CALL_DECL
main( int argc, char* argv[] )
{
    return ::boost::prg_exec_monitor_main( &cpp_main, argc, argv );
}

//____________________________________________________________________________//

#endif // !BOOST_TEST_DYN_LINK && !BOOST_TEST_NO_MAIN

#include <boost/test/detail/enable_warnings.hpp>

#endif // BOOST_TEST_CPP_MAIN_IPP_012205GER