9f16c2bf8e
* *
* update copyright headers with new FSF postal address
* COPYING.txt -> LICENSE.txt (rest of repo to be synced)
146 lines
4.5 KiB
C
146 lines
4.5 KiB
C
/*
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* RAt() function
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*
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* Copyright 2012 Przemyslaw Czerpak <druzus / at / priv.onet.pl>
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* Copyright 1999 Antonio Linares <alinares@fivetech.com>
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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, or (at your option)
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* any later version.
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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; see the file LICENSE.txt. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301 USA (or visit https://www.gnu.org/licenses/).
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*
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* As a special exception, the Harbour Project gives permission for
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* additional uses of the text contained in its release of Harbour.
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*
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* The exception is that, if you link the Harbour libraries with other
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* files to produce an executable, this does not by itself cause the
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* resulting executable to be covered by the GNU General Public License.
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* Your use of that executable is in no way restricted on account of
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* linking the Harbour library code into it.
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*
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* This exception does not however invalidate any other reasons why
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* the executable file might be covered by the GNU General Public License.
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*
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* This exception applies only to the code released by the Harbour
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* Project under the name Harbour. If you copy code from other
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* Harbour Project or Free Software Foundation releases into a copy of
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* Harbour, as the General Public License permits, the exception does
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* not apply to the code that you add in this way. To avoid misleading
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* anyone as to the status of such modified files, you must delete
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* this exception notice from them.
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*
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* If you write modifications of your own for Harbour, it is your choice
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* whether to permit this exception to apply to your modifications.
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* If you do not wish that, delete this exception notice.
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*
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*/
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#include "hbapi.h"
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#include "hbapicdp.h"
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HB_FUNC( RAT )
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{
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HB_SIZE nSubLen = hb_parclen( 1 );
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HB_SIZE nPos = 0;
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if( nSubLen )
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{
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HB_ISIZ nTo = hb_parclen( 2 ) - nSubLen;
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if( nTo >= 0 )
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{
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PHB_CODEPAGE cdp = hb_vmCDP();
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const char * pszSub = hb_parc( 1 );
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const char * pszText = hb_parc( 2 );
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do
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{
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if( pszText[ nTo ] == *pszSub &&
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memcmp( pszSub, pszText + nTo, nSubLen ) == 0 )
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{
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if( HB_CDP_ISCHARIDX( cdp ) )
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nPos = hb_cdpTextLen( cdp, pszText, nTo ) + 1;
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else
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nPos = nTo + 1;
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break;
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}
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}
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while( --nTo >= 0 );
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}
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}
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/* This function never seems to raise an error */
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hb_retns( nPos );
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}
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HB_FUNC( HB_RAT )
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{
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HB_SIZE nSubLen = hb_parclen( 1 );
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HB_SIZE nPos = 0;
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if( nSubLen )
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{
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HB_SIZE nLen = hb_parclen( 2 );
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HB_ISIZ nTo = nLen - nSubLen;
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if( nTo >= 0 )
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{
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PHB_CODEPAGE cdp = hb_vmCDP();
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const char * pszSub = hb_parc( 1 );
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const char * pszText = hb_parc( 2 );
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HB_ISIZ nStart = hb_parns( 3 );
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HB_ISIZ nFrom;
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if( nStart <= 1 )
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nFrom = 0;
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else if( HB_CDP_ISCHARIDX( cdp ) )
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nFrom = hb_cdpTextPos( cdp, pszText, nLen, --nStart );
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else
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nFrom = --nStart;
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if( nTo >= nFrom )
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{
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if( HB_ISNUM( 4 ) )
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{
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HB_ISIZ nEnd = hb_parns( 4 ) - 1;
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if( nEnd > 0 && HB_CDP_ISCHARIDX( cdp ) )
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nEnd = hb_cdpTextPos( cdp, pszText, nLen, nEnd );
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nEnd -= nSubLen - 1;
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if( nEnd < nTo )
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nTo = nEnd;
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}
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if( nTo >= nFrom )
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{
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do
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{
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if( pszText[ nTo ] == *pszSub &&
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memcmp( pszSub, pszText + nTo, nSubLen ) == 0 )
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{
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if( HB_CDP_ISCHARIDX( cdp ) )
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nPos = hb_cdpTextLen( cdp, pszText, nTo ) + 1;
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else
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nPos = nTo + 1;
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break;
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}
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}
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while( --nTo >= nFrom );
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}
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}
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}
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}
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hb_retns( nPos );
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}
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