137 lines
3.8 KiB
C++
Executable File
137 lines
3.8 KiB
C++
Executable File
//
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// _DEBUG.CPP
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//
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// Source file for ArchiveLib 1.0
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//
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// Copyright (c) Greenleaf Software, Inc. 1994
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// All Rights Reserved
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//
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// CONTENTS
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//
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// _ALAssertFailure()
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//
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// DESCRIPTION
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//
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// This file contains a support routine used by the assertion macros,
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//
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// REVISION HISTORY
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//
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// May 22, 1994 1.0A : First release
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//
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//
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#include "arclib.h"
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#pragma hdrstop
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdarg.h>
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//
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// void _ALAssertFailure( const char *condition,
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// const char *filename,
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// int line,
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// const char *message,
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// ... )
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//
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// ARGUMENTS:
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//
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// condition : A character string containing the condition that failed,
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// leading to the assertion.
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//
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// filename : The name of the file where the assertion error took place.
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//
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// line : The line in the file where the assertion error took place.
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//
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// message : The error message associated with the assertion error.
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// This message is a sprintf() style format string.
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//
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// ... : Any additional arguments.
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//
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// RETURNS
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//
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// Nothing.
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//
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// DESCRIPTION
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//
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// The C run time library features an assert() macro, that can be used to
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// abort a program if a given condition isn't true. It aborts the program
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// by calling a routine that looks something like this. The AL_ASSERT()
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// macro that we use is even better, because it includes a comment
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// that gets displayed when the abort takes place. This routine is
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// responsible for displaying that comment, along with the file name and
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// the line number, then aborting the program. It is called by the
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// AL_ASSERT() macro when the conditional expression argument fails.
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//
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// This routine is full of #ifdefs, and looks like a real mess. This
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// is too bad, because it is really quite simple. Basically it has to
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// quit with an abort() under MS-DOS, and a FatalAppExit() under
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// windows. The error message is displayed on the console under MS-DOS,
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// (hope you're not in graphics mode!) and in a MessageBox under
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// Windows. Man, it would be great to have just a little bit of control
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// of the formatting in the message box!
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//
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// REVISION HISTORY
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//
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// May 22, 1994 1.0A : First release
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//
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void AL_CFUNCTION _ALAssertFailure( const char AL_DLL_FAR *condition,
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const char AL_DLL_FAR *filename,
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int line,
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const char AL_DLL_FAR *message,
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... )
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{
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char buf1[ 256 ];
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char buf2[ 128 ];
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va_list argptr;
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va_start( argptr, message );
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#if defined( AL_BUILDING_DLL ) && defined( AL_WINDOWS_GUI )
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//
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// Watcom is kind of annoying in that they format their variable arguments
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// just a little differently than everyone else.
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//
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#if defined( AL_WATCOM )
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wvsprintf( buf2, message, *argptr );
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#else
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wvsprintf( buf2, message, argptr );
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#endif
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#else
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vsprintf( buf2, message, argptr );
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#endif
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va_end( argptr );
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#if defined( AL_BUILDING_DLL ) && defined( AL_WINDOWS_GUI )
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wsprintf
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#else
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sprintf
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#endif
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( buf1,
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"Assertion error, ArchiveLib is aborting the application.\n"
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"Condition = %s\n"
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"File = %s, line = %d\n"
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"%s",
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condition,
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filename,
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line,
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buf2 );
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#if defined( AL_WINDOWS_GUI )
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#ifdef AL_BUILDING_DLL
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MessageBox( 0, buf1, " ArchiveLib (DLL) assertion error ", MB_ICONSTOP );
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#else
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MessageBox( 0,
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buf1,
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" "
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"ArchiveLib (static) assertion error"
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" ",
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MB_ICONSTOP );
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#endif
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FatalAppExit( 0, "Application terminated" );
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#else
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cerr << buf1 << "\n" << flush;
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abort();
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#endif
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}
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