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expand.c
101 lines (97 loc) · 3.4 KB
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expand.c
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/*
* CT3 string function: Expand()
*
* Copyright 2007 Przemyslaw Czerpak <druzus / at / priv.onet.pl>
*
* 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.txt. If not, write to
* the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307 USA (or visit the web site https://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"
HB_FUNC( EXPAND )
{
HB_SIZE nLen = hb_parclen( 1 );
if( nLen > 0 )
{
const char * szText = hb_parc( 1 );
if( nLen == 1 )
hb_retclen( szText, 1 );
else
{
char * szDest, * szPtr, cRepl;
int iRepl, i;
HB_SIZE ulSize, ul;
iRepl = hb_parni( 2 );
i = hb_pcount();
if( i == 2 && HB_ISCHAR( 2 ) )
{
iRepl = 1;
cRepl = hb_parc( 2 )[ 0 ];
}
else if( i == 2 && iRepl == 0 && HB_ISNUM( 2 ) )
{
iRepl = 1;
cRepl = 0;
}
else
{
if( iRepl < 1 )
iRepl = 1;
if( HB_ISNUM( 3 ) )
cRepl = ( char ) hb_parni( 3 );
else if( HB_ISCHAR( 3 ) )
cRepl = hb_parc( 3 )[ 0 ];
else
cRepl = ' ';
}
ulSize = ( nLen - 1 ) * ( iRepl + 1 ) + 1;
szPtr = szDest = ( char * ) hb_xgrab( ulSize + 1 );
*szPtr++ = szText[ 0 ];
for( ul = 1; ul < nLen; ++ul )
{
for( i = 0; i < iRepl; ++i )
*szPtr++ = cRepl;
*szPtr++ = szText[ ul ];
}
hb_retclen_buffer( szDest, ulSize );
}
}
else
hb_retc_null();
}