128 lines
3.5 KiB
C
128 lines
3.5 KiB
C
/*
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* $Id$
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*/
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/*
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* Harbour Project source code:
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* STRZERO() function
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*
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* Copyright 1999 Victor Szakats <info@szelvesz.hu>
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* www - http://www.harbour-project.org
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version, with one exception:
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*
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* The exception is that if you link the Harbour Runtime Library (HRL)
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* and/or the Harbour Virtual Machine (HVM) with other files to produce
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* an executable, this does not by itself cause the resulting executable
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* to be covered by the GNU General Public License. Your use of that
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* executable is in no way restricted on account of linking the HRL
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* and/or HVM code into it.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA (or visit
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* their web site at http://www.gnu.org/).
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*
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*/
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#include "hbapi.h"
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#include "hbapiitm.h"
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#include "hbapierr.h"
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HB_FUNC( STRZERO )
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{
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if( hb_pcount() >= 1 && hb_pcount() <= 3 )
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{
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BOOL bValid;
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PHB_ITEM pNumber = hb_param( 1, IT_NUMERIC );
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PHB_ITEM pWidth = NULL;
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PHB_ITEM pDec = NULL;
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if( pNumber )
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{
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bValid = TRUE;
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if( hb_pcount() >= 2 )
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{
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pWidth = hb_param( 2, IT_NUMERIC );
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if( !pWidth )
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bValid = FALSE;
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}
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if( hb_pcount() >= 3 )
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{
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pDec = hb_param( 3, IT_NUMERIC );
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if( !pDec )
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bValid = FALSE;
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}
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}
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else
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bValid = FALSE;
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if( bValid )
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{
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char * szResult = hb_itemStr( pNumber, pWidth, pDec );
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if( szResult )
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{
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ULONG ulPos = 0;
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while( szResult[ ulPos ] != '\0' && szResult[ ulPos ] != '-' )
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ulPos++;
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if( szResult[ ulPos ] == '-' )
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{
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/* Negative sign found, put the negative sign to the first */
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/* position */
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szResult[ ulPos ] = ' ';
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ulPos = 0;
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while( szResult[ ulPos ] != '\0' && szResult[ ulPos ] == ' ' )
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szResult[ ulPos++ ] = '0';
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szResult[ 0 ] = '-';
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}
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else
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{
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/* Negative sign not found */
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ulPos = 0;
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while( szResult[ ulPos ] != '\0' && szResult[ ulPos ] == ' ' )
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szResult[ ulPos++ ] = '0';
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}
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hb_retc( szResult );
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hb_xfree( szResult );
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}
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else
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hb_retc( "" );
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}
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else
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{
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#ifdef HARBOUR_STRICT_CLIPPER_COMPATIBILITY
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/* NOTE: In CA-Cl*pper STRZERO() is written in Clipper, and will call
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STR() to do the job, the error (if any) will also be thrown
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by STR(). [vszakats] */
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PHB_ITEM pResult = hb_errRT_BASE_Subst( EG_ARG, 1099, NULL, "STR" );
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#else
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PHB_ITEM pResult = hb_errRT_BASE_Subst( EG_ARG, 9999, NULL, "STRZERO" );
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#endif
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if( pResult )
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{
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hb_itemReturn( pResult );
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hb_itemRelease( pResult );
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}
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}
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}
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}
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