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numat.c
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numat.c
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/*
* NumAt() CT3 string function
*
* Copyright 2001 IntTec GmbH, Neunlindenstr 32, 79106 Freiburg, Germany
* Author: Martin Vogel <vogel@inttec.de>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this software; see the file COPYING.txt. If not, write to
* the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307 USA (or visit the web site https://www.gnu.org/).
*
* As a special exception, the Harbour Project gives permission for
* additional uses of the text contained in its release of Harbour.
*
* The exception is that, if you link the Harbour libraries with other
* files to produce an executable, this does not by itself cause the
* resulting executable to be covered by the GNU General Public License.
* Your use of that executable is in no way restricted on account of
* linking the Harbour library code into it.
*
* This exception does not however invalidate any other reasons why
* the executable file might be covered by the GNU General Public License.
*
* This exception applies only to the code released by the Harbour
* Project under the name Harbour. If you copy code from other
* Harbour Project or Free Software Foundation releases into a copy of
* Harbour, as the General Public License permits, the exception does
* not apply to the code that you add in this way. To avoid misleading
* anyone as to the status of such modified files, you must delete
* this exception notice from them.
*
* If you write modifications of your own for Harbour, it is your choice
* whether to permit this exception to apply to your modifications.
* If you do not wish that, delete this exception notice.
*
*/
#include "ct.h"
HB_FUNC( NUMAT )
{
if( HB_ISCHAR( 1 ) && HB_ISCHAR( 2 ) )
{
const char * pcStringToMatch = hb_parc( 1 );
HB_SIZE sStrToMatchLen = hb_parclen( 1 );
const char * pcString = hb_parc( 2 );
HB_SIZE sStrLen = hb_parclen( 2 );
int iMultiPass = ct_getatmupa();
int iAtLike = ct_getatlike();
char cAtLike = ct_getatlikechar();
HB_SIZE sIgnore, sMatchStrLen = 0, sSubStrLen;
HB_SIZE nCounter;
const char * pc, * pcSubStr;
/* eventually ignore some characters */
sIgnore = hb_parnsdef( 3, 0 );
if( sIgnore >= sStrLen )
{
int iArgErrorMode = ct_getargerrormode();
if( iArgErrorMode != CT_ARGERR_IGNORE )
ct_error( ( HB_USHORT ) iArgErrorMode, EG_ARG, CT_ERROR_NUMAT, NULL,
HB_ERR_FUNCNAME, 0, EF_CANDEFAULT, HB_ERR_ARGS_BASEPARAMS );
hb_retni( 0 );
return;
}
else
{
pcString += sIgnore;
sStrLen -= sIgnore;
}
nCounter = 0;
pcSubStr = pcString;
sSubStrLen = sStrLen;
do
{
switch( iAtLike )
{
case CT_SETATLIKE_EXACT:
pc = ct_at_exact_forward( pcSubStr, sSubStrLen, pcStringToMatch,
sStrToMatchLen, &sMatchStrLen );
break;
case CT_SETATLIKE_WILDCARD:
pc = ct_at_wildcard_forward( pcSubStr, sSubStrLen,
pcStringToMatch, sStrToMatchLen,
cAtLike, &sMatchStrLen );
break;
default:
pc = NULL;
}
nCounter++;
if( iMultiPass )
pcSubStr = pc + 1;
else
pcSubStr = pc + sMatchStrLen;
sSubStrLen = sStrLen - ( pcSubStr - pcString );
}
while( pc != NULL );
hb_retns( nCounter - 1 );
}
else
{
PHB_ITEM pSubst = NULL;
int iArgErrorMode = ct_getargerrormode();
if( iArgErrorMode != CT_ARGERR_IGNORE )
pSubst = ct_error_subst( ( HB_USHORT ) iArgErrorMode, EG_ARG,
CT_ERROR_NUMAT, NULL, HB_ERR_FUNCNAME, 0,
EF_CANSUBSTITUTE, HB_ERR_ARGS_BASEPARAMS );
if( pSubst != NULL )
hb_itemReturnRelease( pSubst );
else
hb_retni( 0 );
}
}