81c9b0506c
* contrib/*
* Deleted 'www.' from harbour-project.org website name.
(www.harbour-project.org -> harbour-project.org)
356 lines
11 KiB
C
356 lines
11 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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* CT3 string functions
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* - CHARONLY()
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* - CHARREM()
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* - WORDONLY()
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* - WORDREM()
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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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/* defines */
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#define DO_CHARONLY_CHARONLY 0
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#define DO_CHARONLY_WORDONLY 1
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#define DO_CHARONLY_CHARREM 2
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#define DO_CHARONLY_WORDREM 3
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/* helper function for the *one functions */
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static void do_charonly( int iSwitch )
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{
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/* param check */
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if( HB_ISCHAR( 1 ) && HB_ISCHAR( 2 ) )
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{
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const char *pcString = hb_parc( 2 );
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HB_SIZE sStrLen = hb_parclen( 2 );
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const char *pcOnlySet = hb_parc( 1 );
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HB_SIZE sOnlySetLen = hb_parclen( 1 );
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char *pcRet;
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HB_SIZE sRetStrLen = 0;
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int iShift, iBool;
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const char *pcSub, *pc;
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/* check for zero-length strings */
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switch ( iSwitch )
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{
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case DO_CHARONLY_CHARONLY:
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case DO_CHARONLY_WORDONLY:
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if( ( sStrLen == 0 ) || ( sOnlySetLen == 0 ) )
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{
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hb_retc_null();
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return;
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}
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break;
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case DO_CHARONLY_CHARREM:
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case DO_CHARONLY_WORDREM:
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if( sStrLen == 0 )
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{
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hb_retc_null();
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return;
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}
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if( sOnlySetLen == 0 )
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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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break;
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}
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if( iSwitch == DO_CHARONLY_WORDONLY ||
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iSwitch == DO_CHARONLY_WORDREM )
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iShift = 2;
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else
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iShift = 1;
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pcRet = ( char * ) hb_xgrab( sStrLen );
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for( pcSub = pcString; pcSub < pcString + sStrLen + 1 - iShift; pcSub += iShift )
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{
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pc = ct_at_exact_forward( pcOnlySet, sOnlySetLen, pcSub, iShift, NULL );
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iBool = ( ( pc != NULL ) && ( ( ( pc - pcOnlySet ) % iShift ) == 0 ) );
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if( iBool ? ( iSwitch == DO_CHARONLY_CHARONLY ||
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iSwitch == DO_CHARONLY_WORDONLY )
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: ( iSwitch == DO_CHARONLY_CHARREM ||
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iSwitch == DO_CHARONLY_WORDREM ) )
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{
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for( pc = pcSub; pc < pcSub + iShift; pc++ )
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pcRet[sRetStrLen++] = *pc;
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}
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}
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/* copy last character if string len is odd */
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if( iShift == 2 && sStrLen % 2 == 1 )
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{
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pcRet[sRetStrLen++] = pcString[sStrLen - 1];
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}
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hb_retclen( pcRet, sRetStrLen );
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hb_xfree( pcRet );
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}
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else /* if (ISCHAR (1) && ISCHAR (2)) */
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{
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PHB_ITEM pSubst = NULL;
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int iArgErrorMode = ct_getargerrormode(), iError = 0;
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if( iArgErrorMode != CT_ARGERR_IGNORE )
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{
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switch ( iSwitch )
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{
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case DO_CHARONLY_CHARONLY:
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iError = CT_ERROR_CHARONLY;
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break;
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case DO_CHARONLY_WORDONLY:
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iError = CT_ERROR_WORDONLY;
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break;
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case DO_CHARONLY_CHARREM:
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iError = CT_ERROR_CHARREM;
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break;
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case DO_CHARONLY_WORDREM:
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iError = CT_ERROR_WORDREM;
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break;
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}
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pSubst = ct_error_subst( ( HB_USHORT ) iArgErrorMode, EG_ARG, iError,
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NULL, HB_ERR_FUNCNAME, 0, EF_CANSUBSTITUTE,
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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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* CHARONLY()
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* $CATEGORY$
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* CT3 string functions
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* $ONELINER$
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* Intersectional set of two strings based on characters
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* $SYNTAX$
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* CHARONLY (<cThisCharactersOnly>, <cString>) -> cReducedString
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* $ARGUMENTS$
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* <cThisCharactersOnly> specifies the characters that must not be
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* deleted in <cString>.
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* <cString> is the string that should be processed
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* $RETURNS$
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* <cReducedString> A string with all characters deleted but those
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* specified in <cThisCharactersOnly>.
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* $DESCRIPTION$
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* The CHARONLY() function calculates the intersectional set of two
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* strings. To do this, it deletes all characters from <cString> that
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* do not appear in <cThisCharacterOnly>.
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* $EXAMPLES$
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* ? CHARONLY("0123456789", "0211 - 38 99 77") // "0211389977"
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* ? CHARONLY("0123456789", "0211/ 389 977") // "0211389977"
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* $TESTS$
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* CHARONLY("0123456789", "0211 - 38 99 77") == "0211389977"
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* CHARONLY("0123456789", "0211/ 389 977") == "0211389977"
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* $STATUS$
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* Ready
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* $COMPLIANCE$
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* CHARONLY() is compatible with CT3's CHARONLY().
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* $PLATFORMS$
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* All
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* $FILES$
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* Source is charonly.c, library is ct3.
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* $SEEALSO$
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* CHARREM() WORDONLY() WORDREM()
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* $END$
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*/
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HB_FUNC( CHARONLY )
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{
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do_charonly( DO_CHARONLY_CHARONLY );
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}
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/* $DOC$
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* $FUNCNAME$
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* WORDONLY()
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* $CATEGORY$
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* CT3 string functions
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* $ONELINER$
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* Intersectional set of two strings based on double characters
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* $SYNTAX$
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* WORDONLY (<cThisDoubleCharactersOnly>, <cString>) -> cReducedString
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* $ARGUMENTS$
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* <cThisDoubleCharactersOnly> specifies the double characters that must
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* not be deleted in <cString>.
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* <cString> is the string that should be processed
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* $RETURNS$
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* <cReducedString> A string with all double characters deleted
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* but those specified in <cThisCharactersOnly>.
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* $DESCRIPTION$
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* The WORDONLY() function calculates the intersectional set of two
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* strings based on double characters. To do this, it deletes all double
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* characters from <cString> that do not appear in <cThisDoubleCharacterOnly>.
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* $EXAMPLES$
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* ? WORDONLY("AABBCCDD", "XXAAYYBBZZ") // "AABB"
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* ? WORDONLY("AABBCCDD", "XAAYYYBBZZ") // "BB"
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* $TESTS$
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* WORDONLY("AABBCCDD", "XXAAYYBBZZ") == "AABB"
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* WORDONLY("AABBCCDD", "XAAYYYBBZZ") == "BB"
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* $STATUS$
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* Ready
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* $COMPLIANCE$
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* WORDONLY() is compatible with CT3's WORDONLY().
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* $PLATFORMS$
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* All
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* $FILES$
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* Source is charonly.c, library is ct3.
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* $SEEALSO$
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* CHARONLY() CHARREM() WORDREM()
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* $END$
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*/
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HB_FUNC( WORDONLY )
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{
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do_charonly( DO_CHARONLY_WORDONLY );
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}
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/* $DOC$
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* $FUNCNAME$
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* CHARREM()
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* $CATEGORY$
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* CT3 string functions
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* $ONELINER$
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* Removes characters from a string
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* $SYNTAX$
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* CHARREM (<cDeleteThisCharacters>, <cString>) -> cReducedString
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* $ARGUMENTS$
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* <cDeleteThisCharacters> specifies the characters that should
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* be deleted in <cString>
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* <cString>) is the string that should be processed
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* $RETURNS$
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* <cReducedString> is a string where the characters specified
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* in <cDeleteThisCharacters> are deleted
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* $DESCRIPTION$
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* The CHARREM() function deletes the characters specified in
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* <cDeleteThisCharacters> from <cString>.
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* $EXAMPLES$
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* ? CHARREM(" ", " 1 2 ") // "12"
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* ? CHARREM("3y", "xyz123") // "xz12"
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* $TESTS$
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* CHARREM(" ", " 1 2 ") == "12"
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* CHARREM("3y", "xyz123") == "xz12"
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* $STATUS$
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* Ready
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* $COMPLIANCE$
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* CHARREM() is compatible with CT3's CHARREM().
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* $PLATFORMS$
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* All
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* $FILES$
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* Source is charonly.c, library is ct3.
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* $SEEALSO$
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* CHARONLY() WORDONLY() WORDREM()
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* $END$
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*/
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HB_FUNC( CHARREM )
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{
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do_charonly( DO_CHARONLY_CHARREM );
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}
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/* $DOC$
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* $FUNCNAME$
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* WORDREM()
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* $CATEGORY$
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* CT3 string functions
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* $ONELINER$
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* Removes characters from a string
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* $SYNTAX$
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* WORDREM (<cDeleteThisDoubleCharacters>, <cString>) -> cReducedString
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* $ARGUMENTS$
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* <cDeleteThisDoubleCharacters> specifies the double characters that
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* should be deleted in <cString>
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* <cString>) is the string that should be processed
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* $RETURNS$
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* <cReducedString> is a string where the double characters
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* specified in <cDeleteThisDoubleCharacters>
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* are deleted
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* $DESCRIPTION$
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* The WORDREM() function deletes the double characters specified in
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* <cDeleteThisDoubleCharacters> from <cString>.
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* $EXAMPLES$
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* ? WORDREM("abcd", "0ab1cd") // "0ab1"
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* ? WORDREM("abcd", "ab0cd1") // "0cd1"
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* $TESTS$
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* WORDREM("abcd", "0ab1cd") == "0ab1"
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* WORDREM("abcd", "ab0cd1") == "0cd1"
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* $STATUS$
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* Ready
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* $COMPLIANCE$
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* WORDREM() is a new function available only in Harbour's CT3.
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* $PLATFORMS$
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* All
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* $FILES$
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* Source is charonly.c, library is ct3.
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* $SEEALSO$
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* CHARONLY CHARREM() WORDREM()
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* $END$
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*/
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HB_FUNC( WORDREM )
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{
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do_charonly( DO_CHARONLY_WORDREM );
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}
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