9f16c2bf8e
* *
* update copyright headers with new FSF postal address
* COPYING.txt -> LICENSE.txt (rest of repo to be synced)
126 lines
3.8 KiB
C
126 lines
3.8 KiB
C
/*
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* CT3 Number and bit manipulation functions:
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* CToBit(), BitToC()
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*
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* Copyright 2011 Przemyslaw Czerpak <druzus / at / priv.onet.pl>
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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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HB_FUNC( CTOBIT )
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{
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HB_SIZE nString = hb_parclen( 1 ), nPattern, n;
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int iResult = 0;
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if( nString > 0 )
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{
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nPattern = hb_parclen( 2 );
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if( nPattern >= 1 && nPattern <= 16 )
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{
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const char * pszString = hb_parc( 1 ),
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* pszPattern = hb_parc( 2 );
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for( n = 0; n < nString; ++n )
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{
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char c = pszString[ n ];
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int i = 0;
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do
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{
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if( pszPattern[ i ] == c )
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{
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iResult |= 1 << ( ( int ) nPattern - i - 1 );
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break;
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}
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}
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while( ++i < ( int ) nPattern );
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}
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}
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else
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iResult = -1;
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}
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hb_retni( iResult );
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}
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HB_FUNC( BITTOC )
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{
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HB_SIZE nPattern = hb_parclen( 2 );
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if( nPattern >= 1 && nPattern <= 16 )
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{
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const char * pszPattern = hb_parc( 2 );
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char szBuffer[ 16 ];
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char * pszResult = &szBuffer[ sizeof( szBuffer ) ];
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int iValue, iLen = 0;
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iValue = hb_parnidef( 1, -1 );
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if( iValue > 0xFFFF || iValue < 0 )
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iValue = 0;
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if( hb_parl( 3 ) )
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{
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while( nPattern-- > 0 )
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{
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*--pszResult = iValue & 1 ? pszPattern[ nPattern ] : ' ';
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++iLen;
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iValue >>= 1;
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}
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}
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else
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{
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while( iValue != 0 && nPattern-- > 0 )
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{
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if( iValue & 1 )
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{
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*--pszResult = pszPattern[ nPattern ];
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++iLen;
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}
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iValue >>= 1;
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}
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}
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hb_retclen( pszResult, iLen );
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}
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else
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hb_retc_null();
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}
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