96 lines
3.2 KiB
C
96 lines
3.2 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, or (at your option)
|
|
* any later version.
|
|
*
|
|
* 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 software; see the file COPYING. If not, write to
|
|
* the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
|
|
* Boston, MA 02111-1307 USA (or visit the web site http://www.gnu.org/).
|
|
*
|
|
* As a special exception, the Harbour Project gives permission for
|
|
* additional uses of the text contained in its release of Harbour.
|
|
*
|
|
* The exception is that, if you link the Harbour libraries 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 Harbour library code into it.
|
|
*
|
|
* This exception does not however invalidate any other reasons why
|
|
* the executable file might be covered by the GNU General Public License.
|
|
*
|
|
* This exception applies only to the code released by the Harbour
|
|
* Project under the name Harbour. If you copy code from other
|
|
* Harbour Project or Free Software Foundation releases into a copy of
|
|
* Harbour, as the General Public License permits, the exception does
|
|
* not apply to the code that you add in this way. To avoid misleading
|
|
* anyone as to the status of such modified files, you must delete
|
|
* this exception notice from them.
|
|
*
|
|
* If you write modifications of your own for Harbour, it is your choice
|
|
* whether to permit this exception to apply to your modifications.
|
|
* If you do not wish that, delete this exception notice.
|
|
*
|
|
*/
|
|
|
|
#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( "" );
|
|
}
|
|
|