qglobal.cpp

doxygen(一个自动从源代码生成文档的工具)的源代码

	    fflush( mac_debug );
	}
	fclose(mac_debug);
    }
    exit(0);
}

// copied... this looks really bad.
void fatal( const char *msg, ... )
{
    mac_debug=fopen( "debug.txt", "a+" );
    if(mac_debug) {
	char buf[8196];
	va_list ap;
	va_start( ap, msg );			// use variable arg list
	if ( handler ) {
	    vsprintf( buf, msg, ap );
	    va_end( ap );
	    (*handler)( QtDebugMsg, buf );
	} else {
	    vfprintf( mac_debug, msg, ap );
	    va_end( ap );
	    fprintf( mac_debug, "\n" );		// add newline
	    fflush( mac_debug );
	}
	fclose(mac_debug);
    }
    exit(0);
}

#else

void qDebug( const char *msg, ... )
{
    char buf[8196];
    va_list ap;
    va_start( ap, msg );			// use variable arg list
    if ( handler ) {
	vsprintf( buf, msg, ap );		// ### vsnprintf would be great here
	va_end( ap );
	(*handler)( QtDebugMsg, buf );
    } else {
	vfprintf( stderr, msg, ap );
	va_end( ap );
	fprintf( stderr, "\n" );		// add newline
    }
}

// copied... this looks really bad.
void debug( const char *msg, ... )
{
    char buf[8196];
    va_list ap;
    va_start( ap, msg );			// use variable arg list
    if ( handler ) {
	vsprintf( buf, msg, ap );
	va_end( ap );
	(*handler)( QtDebugMsg, buf );
    } else {
	vfprintf( stderr, msg, ap );
	va_end( ap );
	fprintf( stderr, "\n" );		// add newline
    }
}

void qWarning( const char *msg, ... )
{
    char buf[8196];
    va_list ap;
    va_start( ap, msg );			// use variable arg list
    if ( handler ) {
	vsprintf( buf, msg, ap );
	va_end( ap );
	(*handler)( QtWarningMsg, buf );
    } else {
	vfprintf( stderr, msg, ap );
	va_end( ap );
	fprintf( stderr, "\n" );		// add newline
    }
}


// again, copied
void warning( const char *msg, ... )
{
    char buf[8196];
    va_list ap;
    va_start( ap, msg );			// use variable arg list
    if ( handler ) {
	vsprintf( buf, msg, ap );
	va_end( ap );
	(*handler)( QtWarningMsg, buf );
    } else {
	vfprintf( stderr, msg, ap );
	va_end( ap );
	fprintf( stderr, "\n" );		// add newline
    }
}

void qFatal( const char *msg, ... )
{
    char buf[8196];
    va_list ap;
    va_start( ap, msg );			// use variable arg list
    if ( handler ) {
	vsprintf( buf, msg, ap );
	va_end( ap );
	(*handler)( QtFatalMsg, buf );
    } else {
	vfprintf( stderr, msg, ap );
	va_end( ap );
	fprintf( stderr, "\n" );		// add newline
#if defined(_OS_UNIX_) && defined(DEBUG)
	abort();				// trap; generates core dump
#else
	exit( 1 );				// goodbye cruel world
#endif
    }
}

// yet again, copied
void fatal( const char *msg, ... )
{
    char buf[8196];
    va_list ap;
    va_start( ap, msg );			// use variable arg list
    if ( handler ) {
	vsprintf( buf, msg, ap );
	va_end( ap );
	(*handler)( QtFatalMsg, buf );
    } else {
	vfprintf( stderr, msg, ap );
	va_end( ap );
	fprintf( stderr, "\n" );		// add newline
#if defined(_OS_UNIX_) && defined(DEBUG)
	abort();				// trap; generates core dump
#else
	exit( 1 );				// goodbye cruel world
#endif
    }
}

#endif


/*!
  \fn void ASSERT( bool test )
  \relates QApplication
  Prints a warning message containing the source code file name and line number
  if \e test is FALSE.

  This is really a macro defined in qglobal.h.

  ASSERT is useful for testing required conditions in your program.

  Example:
  \code
    //
    // File: div.cpp
    //

    #include <qglobal.h>

    int divide( int a, int b )
    {
	ASSERT( b != 0 );			// this is line 9
	return a/b;
    }
  \endcode

  If \c b is zero, the ASSERT statement will output the following message
  using the qWarning() function:
  \code
    ASSERT: "b == 0" in div.cpp (9)
  \endcode

  \sa qWarning(), \link debug.html Debugging\endlink
*/


/*!
  \fn void CHECK_PTR( void *p )
  \relates QApplication
  If \e p is null, a fatal messages says that the program ran out of memory
  and exits.  If \e p is not null, nothing happens.

  This is really a macro defined in qglobal.h.

  Example:
  \code
    int *a;
    CHECK_PTR( a = new int[80] );	// never do this!
      // do this instead:
    a = new int[80];
    CHECK_PTR( a );			// this is fine
  \endcode

  \sa qFatal(), \link debug.html Debugging\endlink
*/


//
// The CHECK_PTR macro calls this function to check if an allocation went ok.
//

bool qt_check_pointer( bool c, const char *n, int l )
{
    if ( c )
	qFatal( "In file %s, line %d: Out of memory", n, l );
    return TRUE;
}


static bool firstObsoleteWarning(const char *obj, const char *oldfunc )
{
    static QAsciiDict<int> *obsoleteDict = 0;
    if ( !obsoleteDict ) {			// first time func is called
	obsoleteDict = new QAsciiDict<int>;
#if defined(DEBUG)
	qDebug(
      "You are using obsolete functions in the Qt library. Call the function\n"
      "qSuppressObsoleteWarnings() to suppress obsolete warnings.\n"
	     );
#endif
    }
    QCString s( obj );
    s += "::";
    s += oldfunc;
    if ( obsoleteDict->find(s.data()) == 0 ) {
	obsoleteDict->insert( s.data(), (int*)1 );	// anything different from 0
	return TRUE;
    }
    return FALSE;
}

static bool suppressObsolete = FALSE;

void qSuppressObsoleteWarnings( bool suppress )
{
    suppressObsolete = suppress;
}

void qObsolete(	 const char *obj, const char *oldfunc, const char *newfunc )
{
    if ( suppressObsolete )
	return;
    if ( !firstObsoleteWarning(obj, oldfunc) )
	return;
    if ( obj )
	qDebug( "%s::%s: This function is obsolete, use %s instead.",
	       obj, oldfunc, newfunc );
    else
	qDebug( "%s: This function is obsolete, use %s instead.",
	       oldfunc, newfunc );
}

void qObsolete(	 const char *obj, const char *oldfunc )
{
    if ( suppressObsolete )
	return;
    if ( !firstObsoleteWarning(obj, oldfunc) )
	return;
    if ( obj )
	qDebug( "%s::%s: This function is obsolete.", obj, oldfunc );
    else
	qDebug( "%s: This function is obsolete.", oldfunc );
}

void qObsolete(	 const char *message )
{
    if ( suppressObsolete )
	return;
    if ( !firstObsoleteWarning( "Qt", message) )
	return;
    qDebug( "%s", message );
}


/*!
  \relates QApplication
  Installs a Qt message handler.  Returns a pointer to the message handler
  previously defined.

  The message handler is a function that prints out debug messages,
  warnings and fatal error messages.  The Qt library (debug version)
  contains hundreds of warning messages that are printed when internal
  errors (usually invalid function arguments) occur.  If you implement
  your own message handler, you get total control of these messages.

  The default message handler prints the message to the standard output
  under X11 or to the debugger under Windows.  If it is a fatal message,
  the application aborts immediately.

  Only one message handler can be defined, since this is usually done on
  an application-wide basis to control debug output.

  To restore the message handler, call \c qInstallMsgHandler(0).

  Example:
  \code
    #include <qapplication.h>
    #include <stdio.h>
    #include <stdlib.h>

    void myMessageOutput( QtMsgType type, const char *msg )
    {
	switch ( type ) {
	    case QtDebugMsg:
		fprintf( stderr, "Debug: %s\n", msg );
		break;
	    case QtWarningMsg:
		fprintf( stderr, "Warning: %s\n", msg );
		break;
	    case QtFatalMsg:
		fprintf( stderr, "Fatal: %s\n", msg );
		abort();			// dump core on purpose
	}
    }

    int main( int argc, char **argv )
    {
	qInstallMsgHandler( myMessageOutput );
	QApplication a( argc, argv );
	...
	return a.exec();
    }
  \endcode

  \sa qDebug(), qWarning(), qFatal(), \link debug.html Debugging\endlink
*/

msg_handler qInstallMsgHandler( msg_handler h )
{
    msg_handler old = handler;
    handler = h;
    return old;
}


#ifdef _WS_WIN_
bool qt_winunicode=FALSE;
#endif