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The Windows Access Control Model: Part 2

, 27 Jun 2005
This second part of the Access Control series will program with the basic Access Control structures.
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//  boost/catch_exceptions.hpp -----------------------------------------------//

//  (C) Copyright Beman Dawes 1995-2001. Permission to copy, use, modify, sell
//  and distribute this software is granted provided this copyright notice
//  appears in all copies. This software is provided "as is" without express or
//  implied warranty, and with no claim as to its suitability for any purpose.

//  See http://www.boost.org for updates, documentation, and revision history.

//  Revision History
//   13 Jun 01 report_exception() made inline. (John Maddock, Jesse Jones)
//   26 Feb 01 Numerous changes suggested during formal review. (Beman)
//   25 Jan 01 catch_exceptions.hpp code factored out of cpp_main.cpp.
//   22 Jan 01 Remove test_tools dependencies to reduce coupling.
//    5 Nov 00 Initial boost version (Beman Dawes)

#ifndef BOOST_CATCH_EXCEPTIONS_HPP
#define BOOST_CATCH_EXCEPTIONS_HPP

//  header dependencies are deliberately restricted to the standard library
//  to reduce coupling to other boost libraries.
#include <string>             // for string
#include <new>                // for bad_alloc
#include <typeinfo>           // for bad_cast, bad_typeid
#include <exception>          // for exception, bad_exception
#include <stdexcept>          // for std exception hierarchy
#include <boost/cstdlib.hpp>  // for exit codes
# if __GNUC__ != 2 || __GNUC_MINOR__ > 96
#   include <ostream>         // for ostream
# else
#   include <iostream> // workaround GNU missing ostream header
# endif

# if defined(__BORLANDC__) && (__BORLANDC__ <= 0x0551)
#   define BOOST_BUILT_IN_EXCEPTIONS_MISSING_WHAT 
# endif

#if defined(MPW_CPLUS) && (MPW_CPLUS <= 0x890)
#   define BOOST_BUILT_IN_EXCEPTIONS_MISSING_WHAT 
    namespace std { class bad_typeid { }; }
# endif

namespace boost
{

  namespace detail
  {
    //  A separate reporting function was requested during formal review.
    inline void report_exception( std::ostream & os, 
                                  const char * name, const char * info )
      { os << "\n** uncaught exception: " << name << " " << info << std::endl; }
  }

  //  catch_exceptions  ------------------------------------------------------//

  template< class Generator >  // Generator is function object returning int
  int catch_exceptions( Generator function_object,
                        std::ostream & out, std::ostream & err )
  {
    int result = 0;               // quiet compiler warnings
    bool exception_thrown = true; // avoid setting result for each excptn type

#ifndef BOOST_NO_EXCEPTIONS
    try
    {
#endif
      result = function_object();
      exception_thrown = false;
#ifndef BOOST_NO_EXCEPTIONS
    }

    //  As a result of hard experience with strangely interleaved output
    //  under some compilers, there is a lot of use of endl in the code below
    //  where a simple '\n' might appear to do.

    //  The rules for catch & arguments are a bit different from function 
    //  arguments (ISO 15.3 paragraphs 18 & 19). Apparently const isn't
    //  required, but it doesn't hurt and some programmers ask for it.

    catch ( const char * ex )
      { detail::report_exception( out, "", ex ); }
    catch ( const std::string & ex )
      { detail::report_exception( out, "", ex.c_str() ); }

    //  std:: exceptions
    catch ( const std::bad_alloc & ex )
      { detail::report_exception( out, "std::bad_alloc:", ex.what() ); }

# ifndef BOOST_BUILT_IN_EXCEPTIONS_MISSING_WHAT
    catch ( const std::bad_cast & ex )
      { detail::report_exception( out, "std::bad_cast:", ex.what() ); }
    catch ( const std::bad_typeid & ex )
      { detail::report_exception( out, "std::bad_typeid:", ex.what() ); }
# else
    catch ( const std::bad_cast & )
      { detail::report_exception( out, "std::bad_cast", "" ); }
    catch ( const std::bad_typeid & )
      { detail::report_exception( out, "std::bad_typeid", "" ); }
# endif

    catch ( const std::bad_exception & ex )
      { detail::report_exception( out, "std::bad_exception:", ex.what() ); }
    catch ( const std::domain_error & ex )
      { detail::report_exception( out, "std::domain_error:", ex.what() ); }
    catch ( const std::invalid_argument & ex )
      { detail::report_exception( out, "std::invalid_argument:", ex.what() ); }
    catch ( const std::length_error & ex )
      { detail::report_exception( out, "std::length_error:", ex.what() ); }
    catch ( const std::out_of_range & ex )
      { detail::report_exception( out, "std::out_of_range:", ex.what() ); }
    catch ( const std::range_error & ex )
      { detail::report_exception( out, "std::range_error:", ex.what() ); }
    catch ( const std::overflow_error & ex )
      { detail::report_exception( out, "std::overflow_error:", ex.what() ); }
    catch ( const std::underflow_error & ex )
      { detail::report_exception( out, "std::underflow_error:", ex.what() ); }
    catch ( const std::logic_error & ex )
      { detail::report_exception( out, "std::logic_error:", ex.what() ); }
    catch ( const std::runtime_error & ex )
      { detail::report_exception( out, "std::runtime_error:", ex.what() ); }
    catch ( const std::exception & ex )
      { detail::report_exception( out, "std::exception:", ex.what() ); }

    catch ( ... )
      { detail::report_exception( out, "unknown exception", "" ); }
#endif // BOOST_NO_EXCEPTIONS

    if ( exception_thrown ) result = boost::exit_exception_failure;

    if ( result != 0 && result != exit_success )
    {
      out << std::endl << "**** returning with error code "
                << result << std::endl;
      err
        << "**********  errors detected; see stdout for details  ***********"
        << std::endl;
    }
#if !defined(BOOST_NO_CPP_MAIN_SUCCESS_MESSAGE)
    else { out << std::flush << "no errors detected" << std::endl; }
#endif
    return result;
  } // catch_exceptions

} // boost

#endif  // BOOST_CATCH_EXCEPTIONS_HPP

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About the Author

oshah
Web Developer
United States United States
Mr. Shah is a reclusive C++/C# developer lurking somewhere in the depths of the city of London. He learnt physics at Kings' College London and obtained a Master in Science there. Having earned an MCAD, he teeters on the brink of transitioning from C++ to C#, unsure of which language to jump to. Fortunately, he also knows how to use .NET interop to merge code between the two languages (which means he won't have to make the choice anytime soon).
 
His interests (apart from programming) are walking, football (the real one!), philosophy, history, retro-gaming, strategy gaming, and any good game in general.
 
He maintains a website / blog / FAQ / junk at shexec32.serveftp.net, where he places the best answers he's written to the questions you've asked. If you can find him, maybe you can hire Mr. Shah to help you with anything C++[/CLI]/C#/.NET related Smile | :) .

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