/* * $Id$ */ /* * Harbour Project source code: * ATADJUST() CT3 string function * * Copyright 2001 IntTec GmbH, Neunlindenstr 32, 79106 Freiburg, Germany * Author: Martin Vogel * * www - http://harbour-project.org * * 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. If not, write to * the Free Software Foundation, Inc., 59 Temple Place, Suite 330, * Boston, MA 02111-1307 USA (or visit the web site http://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( ATADJUST ) { if( HB_ISCHAR( 1 ) && HB_ISCHAR( 2 ) && HB_ISNUM( 3 ) ) { const char * pcStringToMatch = hb_parc( 1 ); HB_SIZE sStrToMatchLen = hb_parclen( 1 ); const char * pcString = hb_parc( 2 ); HB_SIZE sStrLen = hb_parclen( 2 ); HB_SIZE sAdjustPosition = hb_parns( 3 ); int iMultiPass = ct_getatmupa(); int iAtLike = ct_getatlike(); char cAtLike = ct_getatlikechar(); HB_SIZE sIgnore, sMatchStrLen = 0; HB_SIZE nCounter; const char * pc = NULL; char cFillChar; const char * pcCheckFill; char * pcRetStr; HB_SIZE sRetStrLen; /* eventually ignore some characters */ if( HB_ISNUM( 5 ) ) sIgnore = hb_parns( 5 ); else sIgnore = 0; if( sIgnore >= sStrLen ) { int iArgErrorMode = ct_getargerrormode(); if( iArgErrorMode != CT_ARGERR_IGNORE ) { ct_error( ( HB_USHORT ) iArgErrorMode, EG_ARG, CT_ERROR_ATADJUST, NULL, HB_ERR_FUNCNAME, 0, EF_CANDEFAULT, HB_ERR_ARGS_BASEPARAMS ); } hb_retclen( pcString, sStrLen ); return; } else { pcString += sIgnore; sStrLen -= sIgnore; } /* check for wrong adjust position */ if( sAdjustPosition == 0 ) { int iArgErrorMode = ct_getargerrormode(); if( iArgErrorMode != CT_ARGERR_IGNORE ) { ct_error( ( HB_USHORT ) iArgErrorMode, EG_ARG, CT_ERROR_ATADJUST, NULL, HB_ERR_FUNCNAME, 0, EF_CANDEFAULT, HB_ERR_ARGS_BASEPARAMS ); } hb_retclen( pcString, sStrLen ); return; } else sAdjustPosition--; /* makes live easier since C indices start at zero ! */ /* nth match or last match ? */ if( HB_ISNUM( 4 ) && ( nCounter = hb_parns( 4 ) ) != 0 ) { /* find the th match */ const char * pcSubStr; HB_SIZE sSubStrLen; HB_SIZE nMatchCounter = 0; pcSubStr = pcString; sSubStrLen = sStrLen; while( nMatchCounter < nCounter ) { 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; } if( pc == NULL ) { /* no match found; if this happens at this point, there are no matches, so return */ hb_retclen( pcString, sStrLen ); return; } nMatchCounter++; if( iMultiPass ) pcSubStr = pc + 1; else pcSubStr = pc + sMatchStrLen; sSubStrLen = sStrLen - ( pcSubStr - pcString ); } } else /* ( HB_ISNUM( 4 ) && ( ( nCounter = hb_parns( 4 ) ) != 0 ) */ { /* we have to find the last match */ switch( iAtLike ) { case CT_SETATLIKE_EXACT: pc = ct_at_exact_backward( pcString, sStrLen, pcStringToMatch, sStrToMatchLen, &sMatchStrLen ); break; case CT_SETATLIKE_WILDCARD: pc = ct_at_wildcard_backward( pcString, sStrLen, pcStringToMatch, sStrToMatchLen, cAtLike, &sMatchStrLen ); break; default: pc = NULL; } if( pc == NULL ) { /* no matches found */ hb_retclen( pcString, sStrLen ); return; } } /* adjust string */ if( HB_ISCHAR( 6 ) ) { if( hb_parclen( 6 ) > 0 ) cFillChar = *( hb_parc( 6 ) ); else cFillChar = 0x20; } else if( HB_ISNUM( 6 ) ) cFillChar = ( char ) ( hb_parnl( 6 ) % 256 ); else cFillChar = 0x20; /* position of pc == adjust position ? */ if( pc == pcString + sAdjustPosition ) { /* do nothing */ hb_retclen( pcString, sStrLen ); } else { if( pc > pcString + sAdjustPosition ) { /* adjust to left */ /* check if we only delete cFillChar characters */ for( pcCheckFill = pcString + sAdjustPosition; pcCheckFill < pc; pcCheckFill++ ) if( *pcCheckFill != cFillChar ) { /* no -> return string unchanged */ hb_retclen( pcString, sStrLen ); return; } /* ok -> calculate new string size */ sRetStrLen = sStrLen - ( pc - ( pcString + sAdjustPosition ) ); pcRetStr = ( char * ) hb_xgrab( sRetStrLen + 1 ); /* copy first portion of string */ if( sAdjustPosition > 0 ) hb_xmemcpy( pcRetStr, pcString, sAdjustPosition ); /* copy second portion of string */ if( sRetStrLen > sAdjustPosition ) hb_xmemcpy( pcRetStr + sAdjustPosition, pc, sRetStrLen - sAdjustPosition ); hb_retclen_buffer( pcRetStr, sRetStrLen ); } else { /* adjust to right */ sRetStrLen = sStrLen + ( pcString + sAdjustPosition ) - pc; pcRetStr = ( char * ) hb_xgrab( sRetStrLen + 1 ); /* copy first portion of string */ if( pc > pcString ) hb_xmemcpy( pcRetStr, pcString, pc - pcString ); /* fill characters */ hb_xmemset( pcRetStr + ( pc - pcString ), cFillChar, sAdjustPosition - ( pc - pcString ) ); /* copy second portion of string */ if( sRetStrLen > sAdjustPosition ) hb_xmemcpy( pcRetStr + sAdjustPosition, pc, sRetStrLen - sAdjustPosition ); hb_retclen_buffer( pcRetStr, sRetStrLen ); } } } else /* ( HB_ISCHAR( 1 ) && HB_ISCHAR( 2 ) && HB_ISNUM( 3 ) ) */ { PHB_ITEM pSubst = NULL; int iArgErrorMode = ct_getargerrormode(); if( iArgErrorMode != CT_ARGERR_IGNORE ) { pSubst = ct_error_subst( ( HB_USHORT ) iArgErrorMode, EG_ARG, CT_ERROR_ATADJUST, NULL, HB_ERR_FUNCNAME, 0, EF_CANSUBSTITUTE, HB_ERR_ARGS_BASEPARAMS ); } if( pSubst != NULL ) hb_itemReturnRelease( pSubst ); else if( HB_ISCHAR( 2 ) ) hb_retclen( hb_parc( 2 ), hb_parclen( 2 ) ); else hb_retc_null(); } }