142 lines
3.7 KiB
C
142 lines
3.7 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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* *TRIM() functions
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*
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* Copyright 1999 Antonio Linares <alinares@fivetech.com>
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* www - http://www.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 of the License, or
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* (at your option) any later version, with one exception:
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*
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* The exception is that if you link the Harbour Runtime Library (HRL)
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* and/or the Harbour Virtual Machine (HVM) with other files to produce
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* an executable, this does not by itself cause the resulting executable
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* to be covered by the GNU General Public License. Your use of that
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* executable is in no way restricted on account of linking the HRL
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* and/or HVM code into it.
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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 program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA (or visit
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* their web site at http://www.gnu.org/).
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*
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*/
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#include "hbapi.h"
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#include "hbapiitm.h"
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#include "hbapierr.h"
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/* trims from the left, and returns a new pointer to szText */
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/* also returns the new length in lLen */
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char * hb_strLTrim( const char * szText, ULONG * ulLen )
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{
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HB_TRACE(HB_TR_DEBUG, ("hb_strLTrim(%s, %p)", szText, ulLen));
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while( *ulLen && HB_ISSPACE( *szText ) )
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{
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szText++;
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( *ulLen )--;
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}
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return ( char * ) szText;
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}
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/* return length of szText ignoring trailing white space (or true spaces) */
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ULONG hb_strRTrimLen( const char * szText, ULONG ulLen, BOOL bAnySpace )
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{
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HB_TRACE(HB_TR_DEBUG, ("hb_strRTrimLen(%s, %lu. %d)", szText, ulLen, (int) bAnySpace));
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if( bAnySpace )
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{
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while( ulLen && HB_ISSPACE( szText[ ulLen - 1 ] ) )
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ulLen--;
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}
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else
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{
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while( ulLen && szText[ ulLen - 1 ] == ' ' )
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ulLen--;
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}
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return ulLen;
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}
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/* trims leading spaces from a string */
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HB_FUNC( LTRIM )
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{
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PHB_ITEM pText = hb_param( 1, HB_IT_STRING );
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if( pText )
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{
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ULONG ulLen = hb_itemGetCLen( pText );
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char * szText = hb_strLTrim( hb_itemGetCPtr( pText ), &ulLen );
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hb_retclen( szText, ulLen );
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}
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else
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hb_errRT_BASE_SubstR( EG_ARG, 1101, NULL, "LTRIM" );
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}
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/* trims trailing spaces from a string */
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/* NOTE: The second parameter is a Harbour extension. */
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HB_FUNC( RTRIM )
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{
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PHB_ITEM pText = hb_param( 1, HB_IT_STRING );
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if( pText )
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{
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char * pszText = hb_itemGetCPtr( pText );
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hb_retclen( pszText, hb_strRTrimLen( pszText, hb_itemGetCLen( pText ),
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ISLOG( 2 ) ? hb_parl( 2 ) : FALSE ) );
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}
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else
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/* NOTE: "TRIM" is right here [vszakats] */
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hb_errRT_BASE_SubstR( EG_ARG, 1100, NULL, "TRIM" );
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}
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/* synonymn for RTRIM */
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HB_FUNC( TRIM )
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{
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HB_FUNCNAME( RTRIM )();
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}
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/* trims leading and trailing spaces from a string */
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/* NOTE: The second parameter is a Harbour extension. */
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HB_FUNC( ALLTRIM )
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{
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PHB_ITEM pText = hb_param( 1, HB_IT_STRING );
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if( pText )
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{
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char * pszText = hb_itemGetCPtr( pText );
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ULONG ulLen = hb_strRTrimLen( pszText, hb_itemGetCLen( pText ),
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ISLOG( 2 ) ? hb_parl( 2 ) : FALSE );
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pszText = hb_strLTrim( pszText, &ulLen );
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hb_retclen( pszText, ulLen );
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}
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else
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#ifdef HB_COMPAT_C53
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hb_errRT_BASE_SubstR( EG_ARG, 2022, NULL, "ALLTRIM" ); /* NOTE: This appeared in CA-Cl*pper 5.3 [vszakats] */
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#else
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hb_retc( "" );
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#endif
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}
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