9f16c2bf8e
* *
* update copyright headers with new FSF postal address
* COPYING.txt -> LICENSE.txt (rest of repo to be synced)
266 lines
8.8 KiB
C
266 lines
8.8 KiB
C
/*
|
|
* AtAdjust() 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 program; see the file LICENSE.txt. If not, write to
|
|
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
|
|
* Boston, MA 02110-1301 USA (or visit https://www.gnu.org/licenses/).
|
|
*
|
|
* 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 */
|
|
sIgnore = hb_parnsdef( 5, 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 <nCounter>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 <nCounter> matches, so return */
|
|
hb_retclen( pcString, sStrLen );
|
|
return;
|
|
}
|
|
|
|
nMatchCounter++;
|
|
if( iMultiPass )
|
|
pcSubStr = pc + 1;
|
|
else
|
|
pcSubStr = pc + sMatchStrLen;
|
|
sSubStrLen = sStrLen - ( pcSubStr - pcString );
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* 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
|
|
{
|
|
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();
|
|
}
|
|
}
|