79 lines
2.3 KiB
C
79 lines
2.3 KiB
C
/*
|
|
* $Id$
|
|
*/
|
|
|
|
/*
|
|
* Harbour Project source code:
|
|
* STUFF() function
|
|
*
|
|
* Copyright 1999 Antonio Linares <alinares@fivetech.com>
|
|
* www - http://www.harbour-project.org
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version, with one exception:
|
|
*
|
|
* The exception is that if you link the Harbour Runtime Library (HRL)
|
|
* and/or the Harbour Virtual Machine (HVM) with other files to produce
|
|
* an executable, this does not by itself cause the resulting executable
|
|
* to be covered by the GNU General Public License. Your use of that
|
|
* executable is in no way restricted on account of linking the HRL
|
|
* and/or HVM code into it.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA (or visit
|
|
* their web site at http://www.gnu.org/).
|
|
*
|
|
*/
|
|
|
|
#include "hbapi.h"
|
|
|
|
/* replaces characters in a string */
|
|
HB_FUNC( STUFF )
|
|
{
|
|
if( ISCHAR( 1 ) && ISNUM( 2 ) && ISNUM( 3 ) && ISCHAR( 4 ) )
|
|
{
|
|
char * szText = hb_parc( 1 );
|
|
ULONG ulText = hb_parclen( 1 );
|
|
ULONG ulPos = hb_parnl( 2 );
|
|
ULONG ulDel = hb_parnl( 3 );
|
|
ULONG ulInsert = hb_parclen( 4 );
|
|
|
|
ULONG ulTotalLen;
|
|
|
|
if( ulPos > 0 )
|
|
ulPos--;
|
|
|
|
if( ulPos > ulText )
|
|
ulPos = ulText;
|
|
|
|
if( ulDel > ulText - ulPos )
|
|
ulDel = ulText - ulPos;
|
|
|
|
if( ( ulTotalLen = ulText + ulInsert - ulDel ) > 0 )
|
|
{
|
|
char * szResult = ( char * ) hb_xgrab( ulTotalLen + 1 );
|
|
|
|
hb_xmemcpy( szResult, szText, ulPos );
|
|
hb_xmemcpy( szResult + ulPos, hb_parc( 4 ), ulInsert );
|
|
hb_xmemcpy( szResult + ulPos + ulInsert, szText + ulPos + ulDel, ulText - ( ulPos + ulDel ) );
|
|
|
|
szResult[ ulTotalLen ] = '\0';
|
|
hb_retclen( szResult, ulTotalLen );
|
|
hb_xfree( szResult );
|
|
}
|
|
else
|
|
hb_retc( "" );
|
|
}
|
|
else
|
|
hb_retc( "" );
|
|
}
|
|
|