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108 lines
3.8 KiB
C
108 lines
3.8 KiB
C
/*
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* Harbour Project source code:
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* Chr(), Asc() functions
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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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* www - http://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, 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 software; see the file COPYING.txt. If not, write to
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* the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
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* Boston, MA 02111-1307 USA (or visit the web site http://www.gnu.org/).
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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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#include "hbapierr.h"
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/* converts an ASCII code to a character value */
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HB_FUNC( CHR )
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{
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if( HB_ISNUM( 1 ) )
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{
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/* NOTE: CA-Cl*pper's compiler optimizer will be wrong for those
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Chr() cases where the passed parameter is a constant which
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can be divided by 256 but it's not zero, in this case it
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will return an empty string instead of a Chr( 0 ). [vszakats] */
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/* Believe it or not, clipper does this! */
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#ifdef HB_CLP_STRICT
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char szChar[ 2 ];
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szChar[ 0 ] = hb_parnl( 1 ) % 256;
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szChar[ 1 ] = '\0';
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hb_retclen( szChar, 1 );
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#else
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PHB_CODEPAGE cdp = hb_vmCDP();
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if( HB_CDP_ISCHARUNI( cdp ) )
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{
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char szChar[ HB_MAX_CHAR_LEN ];
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HB_SIZE nLen;
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nLen = hb_cdpTextPutU16( hb_vmCDP(), szChar, sizeof( szChar ),
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( HB_WCHAR ) hb_parni( 1 ) );
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hb_retclen( szChar, nLen );
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}
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else
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hb_retclen( hb_szAscii[ hb_parni( 1 ) & 0xFF ], 1 );
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#endif
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}
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else
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hb_errRT_BASE_SubstR( EG_ARG, 1104, NULL, HB_ERR_FUNCNAME, HB_ERR_ARGS_BASEPARAMS );
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}
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/* converts a character value to an ASCII code */
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HB_FUNC( ASC )
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{
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const char * szValue = hb_parc( 1 );
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if( szValue )
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{
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int iChar;
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PHB_CODEPAGE cdp = hb_vmCDP();
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if( HB_CDP_ISCHARUNI( cdp ) )
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iChar = hb_cdpTextGetU16( cdp, szValue, hb_parclen( 1 ) );
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else
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iChar = ( HB_UCHAR ) szValue[ 0 ];
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hb_retni( iChar );
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}
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else
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hb_errRT_BASE_SubstR( EG_ARG, 1107, NULL, HB_ERR_FUNCNAME, HB_ERR_ARGS_BASEPARAMS );
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}
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