81c9b0506c
* contrib/*
* Deleted 'www.' from harbour-project.org website name.
(www.harbour-project.org -> harbour-project.org)
538 lines
14 KiB
C
538 lines
14 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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* POSCHAR(), POSDEL(), POSINS() and POSREPL() CT3 functions
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*
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* Copyright 2001 IntTec GmbH, Neunlindenstr 32, 79106 Freiburg, Germany
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* Author: Martin Vogel <vogel@inttec.de>
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*
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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. 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 "ct.h"
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/* $DOC$
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* $FUNCNAME$
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* POSCHAR()
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* $CATEGORY$
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* CT3 string functions
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* $ONELINER$
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* Replace character at a certain position within a string
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* $SYNTAX$
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* POSCHAR (<[@]cString>, <cCharacter|nCharacter>, [<nPosition>]) -> cString
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* $ARGUMENTS$
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* $RETURNS$
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* $DESCRIPTION$
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* TODO: add documentation
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* $EXAMPLES$
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* $TESTS$
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* $STATUS$
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* Started
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* $COMPLIANCE$
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* POSCHAR() is compatible with CT3's POSCHAR().
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* $PLATFORMS$
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* All
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* $FILES$
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* Source is pos2.c, library is libct.
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* $SEEALSO$
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* POSDEL(),POSINS(),POSREPL(),CSETREF()
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* $END$
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*/
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HB_FUNC( POSCHAR )
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{
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int iNoRet;
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iNoRet = ct_getref() && HB_ISBYREF( 1 );
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if( hb_parclen( 1 ) > 0 )
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{
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if( ( hb_parclen( 2 ) > 0 ) || HB_ISNUM( 2 ) )
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{
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const char *pcString = hb_parc( 1 );
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HB_SIZE sStrLen = hb_parclen( 1 );
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char *pcRet;
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char cReplace;
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HB_SIZE sPosition;
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if( HB_ISCHAR( 2 ) )
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cReplace = *( hb_parc( 2 ) );
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else
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cReplace = ( char ) ( hb_parnl( 2 ) % 256 );
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if( HB_ISNUM( 3 ) )
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{
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sPosition = hb_parnl( 3 );
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if( sPosition == 0 )
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sPosition = sStrLen;
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}
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else
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sPosition = sStrLen;
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pcRet = ( char * ) hb_xgrab( sStrLen + 1 );
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hb_xmemcpy( pcRet, pcString, sStrLen );
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*( pcRet + sPosition - 1 ) = cReplace;
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if( HB_ISBYREF( 1 ) )
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hb_storclen( pcRet, sStrLen, 1 );
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if( iNoRet )
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{
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hb_ret();
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hb_xfree( pcRet );
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}
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else
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hb_retclen_buffer( pcRet, sStrLen );
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}
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else /* ( hb_parclen( 2 ) > 0 ) || HB_ISNUM( 2 ) */
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{
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PHB_ITEM pSubst = NULL;
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int iArgErrorMode = ct_getargerrormode();
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if( iArgErrorMode != CT_ARGERR_IGNORE )
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{
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pSubst = ct_error_subst( ( HB_USHORT ) iArgErrorMode, EG_ARG,
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CT_ERROR_POSCHAR, NULL, HB_ERR_FUNCNAME, 0,
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EF_CANSUBSTITUTE, HB_ERR_ARGS_BASEPARAMS );
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}
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if( pSubst != NULL )
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hb_itemReturnRelease( pSubst );
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else if( iNoRet )
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hb_ret();
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else
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hb_retclen( hb_parc( 1 ), hb_parclen( 1 ) );
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}
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}
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else /* hb_parclen( 1 ) > 0 */
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{
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PHB_ITEM pSubst = NULL;
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int iArgErrorMode = ct_getargerrormode();
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if( iArgErrorMode != CT_ARGERR_IGNORE )
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{
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pSubst = ct_error_subst( ( HB_USHORT ) iArgErrorMode, EG_ARG,
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CT_ERROR_POSCHAR, NULL, HB_ERR_FUNCNAME, 0,
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EF_CANSUBSTITUTE, HB_ERR_ARGS_BASEPARAMS );
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}
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if( pSubst != NULL )
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hb_itemReturnRelease( pSubst );
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else if( iNoRet )
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hb_ret();
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else
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hb_retc_null();
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}
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}
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/* $DOC$
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* $FUNCNAME$
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* POSDEL()
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* $CATEGORY$
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* CT3 string functions
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* $ONELINER$
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* Delete characters at a certain position within a string
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* $SYNTAX$
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* POSDEL (<cString>, [<nStartPosition>], <nLength>) -> cString
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* $ARGUMENTS$
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* $RETURNS$
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* $DESCRIPTION$
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* TODO: add documentation
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* $EXAMPLES$
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* $TESTS$
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* $STATUS$
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* Started
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* $COMPLIANCE$
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* POSDEL() is compatible with CT3's POSDEL().
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* $PLATFORMS$
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* All
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* $FILES$
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* Source is pos2.c, library is libct.
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* $SEEALSO$
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* POSCHAR(),POSINS(),POSREPL()
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* $END$
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*/
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HB_FUNC( POSDEL )
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{
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if( HB_ISCHAR( 1 ) )
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{
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const char *pcString = hb_parc( 1 );
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HB_SIZE sStrLen = hb_parclen( 1 );
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HB_SIZE sStartPos, sDelLen;
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char *pcRet;
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if( HB_ISNUM( 3 ) )
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sDelLen = hb_parnl( 3 );
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else
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sDelLen = 1; /* set new standard behavior */
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if( HB_ISNUM( 2 ) )
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{
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sStartPos = hb_parnl( 2 );
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if( sStartPos == 0 || sStartPos > sStrLen - sDelLen + 1 )
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sStartPos = sStrLen - sDelLen + 1;
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}
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else
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sStartPos = sStrLen - sDelLen + 1;
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if( sStrLen <= sDelLen )
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{
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hb_retc_null();
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return;
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}
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pcRet = ( char * ) hb_xgrab( sStrLen - sDelLen + 1 );
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/* copy first part */
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if( sStartPos > 1 )
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{
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hb_xmemcpy( pcRet, pcString, sStartPos - 1 );
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}
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/* copy second part */
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if( sStrLen > ( sStartPos - 1 + sDelLen ) )
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{
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hb_xmemcpy( pcRet + sStartPos - 1, pcString + sStartPos - 1 + sDelLen,
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sStrLen - ( sStartPos - 1 + sDelLen ) );
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}
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hb_retclen_buffer( pcRet, sStrLen - sDelLen );
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}
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else /* HB_ISCHAR( 1 ) */
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{
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PHB_ITEM pSubst = NULL;
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int iArgErrorMode = ct_getargerrormode();
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if( iArgErrorMode != CT_ARGERR_IGNORE )
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{
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pSubst = ct_error_subst( ( HB_USHORT ) iArgErrorMode, EG_ARG,
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CT_ERROR_POSDEL, NULL, HB_ERR_FUNCNAME, 0,
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EF_CANSUBSTITUTE, HB_ERR_ARGS_BASEPARAMS );
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}
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if( pSubst != NULL )
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hb_itemReturnRelease( pSubst );
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else
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hb_retc_null();
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}
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}
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/* $DOC$
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* $FUNCNAME$
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* POSINS()
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* $CATEGORY$
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* CT3 string functions
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* $ONELINER$
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* Insert characters at a certain position within a string
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* $SYNTAX$
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* POSINS (<cString>, <cInsert>, [<nPosition>]) -> cString
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* $ARGUMENTS$
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* $RETURNS$
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* $DESCRIPTION$
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* TODO: add documentation
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* $EXAMPLES$
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* $TESTS$
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* $STATUS$
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* Started
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* $COMPLIANCE$
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* POSINS() is compatible with CT3's POSINS().
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* $PLATFORMS$
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* All
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* $FILES$
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* Source is pos2.c, library is libct.
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* $SEEALSO$
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* POSCHAR,POSDEL(),POSREPL()
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* $END$
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*/
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HB_FUNC( POSINS )
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{
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if( HB_ISCHAR( 1 ) )
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{
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const char *pcString = hb_parc( 1 );
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HB_SIZE sStrLen = hb_parclen( 1 );
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const char *pcInsert;
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HB_SIZE sInsLen;
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if( ( sInsLen = hb_parclen( 2 ) ) > 0 )
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{
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HB_SIZE sStartPos;
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char *pcRet;
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pcInsert = hb_parc( 2 );
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if( HB_ISNUM( 3 ) )
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{
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sStartPos = hb_parnl( 3 );
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if( sStartPos == 0 )
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sStartPos = sStrLen;
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}
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else
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sStartPos = sStrLen;
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/* check for false sStartPos */
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if( sStartPos > sStrLen + 1 )
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{
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int iArgErrorMode = ct_getargerrormode();
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if( iArgErrorMode != CT_ARGERR_IGNORE )
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{
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ct_error( ( HB_USHORT ) iArgErrorMode, EG_ARG, CT_ERROR_POSINS,
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NULL, HB_ERR_FUNCNAME, 0, EF_CANDEFAULT,
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HB_ERR_ARGS_BASEPARAMS );
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}
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hb_retclen( pcString, sStrLen );
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return;
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}
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pcRet = ( char * ) hb_xgrab( sStrLen + sInsLen + 1 );
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/* copy first part */
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if( sStartPos > 1 )
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hb_xmemcpy( pcRet, pcString, sStartPos - 1 );
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/* insert string */
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hb_xmemcpy( pcRet + sStartPos - 1, pcInsert, sInsLen );
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/* copy second part */
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if( sStrLen > ( sStartPos - 1 ) )
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{
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hb_xmemcpy( pcRet + sStartPos - 1 + sInsLen, pcString + sStartPos - 1,
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sStrLen - ( sStartPos - 1 ) );
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}
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hb_retclen_buffer( pcRet, sStrLen + sInsLen );
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}
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else /* hb_parclen( 2 ) > 0 */
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hb_retclen( pcString, sStrLen );
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}
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else /* HB_ISCHAR( 1 ) */
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{
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PHB_ITEM pSubst = NULL;
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int iArgErrorMode = ct_getargerrormode();
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if( iArgErrorMode != CT_ARGERR_IGNORE )
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{
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pSubst = ct_error_subst( ( HB_USHORT ) iArgErrorMode, EG_ARG,
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CT_ERROR_POSINS, NULL, HB_ERR_FUNCNAME, 0,
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EF_CANSUBSTITUTE, HB_ERR_ARGS_BASEPARAMS );
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}
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if( pSubst != NULL )
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hb_itemReturnRelease( pSubst );
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else
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hb_retc_null();
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}
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}
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/* $DOC$
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* $FUNCNAME$
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* POSREPL()
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* $CATEGORY$
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* CT3 string functions
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* $ONELINER$
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* Replace characters at a certain position within a string
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* $SYNTAX$
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* POSREPL (<[@]cString>, <cReplacement>, [<nStartPosition>]) -> cString
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* $ARGUMENTS$
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* $RETURNS$
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* $DESCRIPTION$
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* TODO: add documentation
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* $EXAMPLES$
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* $TESTS$
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* $STATUS$
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* Started
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* $COMPLIANCE$
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* POSREPL() is compatible with CT3's POSREPL().
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* $PLATFORMS$
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* All
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* $FILES$
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* Source is pos2.c, library is libct.
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* $SEEALSO$
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* POSCHAR(),POSDEL(),POSINS(),CSETREF()
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* $END$
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*/
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HB_FUNC( POSREPL )
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{
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int iNoRet;
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iNoRet = ct_getref() && HB_ISBYREF( 1 );
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if( HB_ISCHAR( 1 ) )
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{
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const char *pcString = hb_parc( 1 );
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HB_SIZE sStrLen = hb_parclen( 1 );
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const char *pcReplace;
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HB_SIZE sReplLen;
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if( ( sReplLen = hb_parclen( 2 ) ) > 0 )
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{
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HB_SIZE sStartPos;
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char *pcRet;
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HB_SIZE sRetLen;
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pcReplace = hb_parc( 2 );
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if( HB_ISNUM( 3 ) )
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{
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sStartPos = hb_parnl( 3 );
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if( sStartPos == 0 )
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{
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if( sReplLen > sStrLen )
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sStartPos = 1;
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else
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sStartPos = sStrLen - sReplLen + 1;
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}
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}
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else
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{
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if( sReplLen > sStrLen )
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sStartPos = 1;
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else
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sStartPos = sStrLen - sReplLen + 1;
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}
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/* check for false sStartPos */
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if( sStartPos > sStrLen + 1 )
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{
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int iArgErrorMode = ct_getargerrormode();
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if( iArgErrorMode != CT_ARGERR_IGNORE )
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{
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ct_error( ( HB_USHORT ) iArgErrorMode, EG_ARG, CT_ERROR_POSREPL,
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NULL, HB_ERR_FUNCNAME, 0, EF_CANDEFAULT,
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HB_ERR_ARGS_BASEPARAMS );
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}
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if( iNoRet )
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hb_ret();
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else
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hb_retclen( pcString, sStrLen );
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return;
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}
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if( sStrLen > ( sStartPos + sReplLen - 1 ) )
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sRetLen = sStrLen;
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else
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sRetLen = sStartPos + sReplLen - 1;
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pcRet = ( char * ) hb_xgrab( sRetLen + 1 );
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/* copy first part */
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if( sStartPos > 1 )
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hb_xmemcpy( pcRet, pcString, sStartPos - 1 );
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/* insert replacement string */
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hb_xmemcpy( pcRet + sStartPos - 1, pcReplace, sReplLen );
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/* copy second part */
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if( sStrLen > ( sStartPos - 1 + sReplLen ) )
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hb_xmemcpy( pcRet + sStartPos - 1 + sReplLen, pcString + sStartPos - 1 + sReplLen,
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sStrLen - ( sStartPos - 1 + sReplLen ) );
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if( HB_ISBYREF( 1 ) )
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{
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hb_storclen( pcRet, sRetLen, 1 );
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}
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if( iNoRet )
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{
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hb_xfree( pcRet );
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hb_ret();
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}
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else
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hb_retclen_buffer( pcRet, sRetLen );
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}
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else /* hb_parclen( 2 ) > 0 */
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{
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PHB_ITEM pSubst = NULL;
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int iArgErrorMode = ct_getargerrormode();
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if( iArgErrorMode != CT_ARGERR_IGNORE )
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{
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pSubst = ct_error_subst( ( HB_USHORT ) iArgErrorMode, EG_ARG,
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CT_ERROR_POSREPL, NULL, HB_ERR_FUNCNAME, 0,
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EF_CANSUBSTITUTE, HB_ERR_ARGS_BASEPARAMS );
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}
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if( pSubst != NULL )
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hb_itemReturnRelease( pSubst );
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else if( iNoRet )
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hb_ret();
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else
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hb_retclen( pcString, sStrLen );
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}
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}
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else /* HB_ISCHAR( 1 ) */
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{
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PHB_ITEM pSubst = NULL;
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int iArgErrorMode = ct_getargerrormode();
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if( iArgErrorMode != CT_ARGERR_IGNORE )
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{
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pSubst = ct_error_subst( ( HB_USHORT ) iArgErrorMode, EG_ARG,
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CT_ERROR_POSREPL, NULL, HB_ERR_FUNCNAME, 0,
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EF_CANSUBSTITUTE, HB_ERR_ARGS_BASEPARAMS );
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}
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if( pSubst != NULL )
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hb_itemReturnRelease( pSubst );
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else if( iNoRet )
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hb_ret();
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else
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hb_retc_null();
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}
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}
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