257 lines
6.1 KiB
C
257 lines
6.1 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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* REMALL(), REMLEFT() and REMRIGHT() CT3 string functions
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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://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, 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_REMOVE_REMALL 0
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#define DO_REMOVE_REMLEFT 1
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#define DO_REMOVE_REMRIGHT 2
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static const ULONG sulErrorSubcodes[3] = {CT_ERROR_REMALL,
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CT_ERROR_REMLEFT,
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CT_ERROR_REMRIGHT};
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static const char * spcErrorOperation[3] = {"REMALL",
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"REMLEFT",
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"REMRIGHT"};
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/* helper function for the remxxx functions */
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static void do_remove (int iSwitch)
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{
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/* param check */
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if (ISCHAR (1))
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{
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char *pcString = (char *)hb_parc (1);
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size_t sStrLen = (size_t)hb_parclen (1);
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char *pcRet, *pc;
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size_t sRetLen;
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char cSearch;
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if (hb_parclen (2) > 0)
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cSearch = *(hb_parc (2));
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else if (ISNUM (2))
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cSearch = hb_parnl (2) % 256;
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else
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cSearch = 0x20;
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sRetLen = sStrLen;
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pcRet = pcString;
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if (iSwitch != DO_REMOVE_REMRIGHT)
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{
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while ((*pcRet == cSearch) && (pcRet < pcString+sStrLen))
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{
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pcRet++;
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sRetLen--;
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}
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}
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if (iSwitch != DO_REMOVE_REMRIGHT)
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{
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pc = pcString+sStrLen-1;
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while ((*pc == cSearch) && (pc >= pcRet))
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{
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pc--;
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sRetLen--;
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}
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}
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if (sRetLen == 0)
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hb_retc ("");
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else
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hb_retclen (pcRet, sRetLen);
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}
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else /* if (ISCHAR (1)) */
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{
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PHB_ITEM pSubst = NULL;
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int iArgErrorMode = ct_getargerrormode();
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if (iArgErrorMode != CT_ARGERR_IGNORE)
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{
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pSubst = ct_error_subst ((USHORT)iArgErrorMode, EG_ARG, sulErrorSubcodes[iSwitch],
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NULL, (char *)spcErrorOperation[iSwitch], 0, EF_CANSUBSTITUTE, 2,
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hb_paramError (1), hb_paramError (2));
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}
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if (pSubst != NULL)
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{
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hb_itemReturn (pSubst);
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hb_itemRelease (pSubst);
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}
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else
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{
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hb_retc ("");
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}
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return;
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}
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return;
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}
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/* $DOC$
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* $FUNCNAME$
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* REMALL()
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* $CATEGORY$
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* CT3 string functions
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* $ONELINER$
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* Remove certain characters at the left and right of a string
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* $SYNTAX$
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* REMALL (<cString>, [<cSearch|nSearch>]) -> cString
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* $ARGUMENTS$
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* $RETURNS$
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* $DESCRIPTION$
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* TODO: add documentation
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* $EXAMPLES$
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* $TESTS$
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* $STATUS$
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* Started
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* $COMPLIANCE$
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* REMALL() is compatible with CT3's REMALL().
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* $PLATFORMS$
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* All
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* $FILES$
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* Source is remove.c, library is libct.
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* $SEEALSO$
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* REMLEFT(),REMRIGHT()
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* $END$
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*/
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HB_FUNC (REMALL)
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{
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do_remove (DO_REMOVE_REMALL);
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return;
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}
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/* $DOC$
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* $FUNCNAME$
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* REMLEFT()
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* $CATEGORY$
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* CT3 string functions
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* $ONELINER$
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* Remove certain characters at the left of a string
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* $SYNTAX$
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* REMLEFT (<cString>, [<cSearch|nSearch>]) -> cString
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* $ARGUMENTS$
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* $RETURNS$
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* $DESCRIPTION$
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* TODO: add documentation
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* $EXAMPLES$
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* $TESTS$
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* $STATUS$
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* Started
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* $COMPLIANCE$
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* REMLEFT() is compatible with CT3's REMLEFT().
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* $PLATFORMS$
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* All
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* $FILES$
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* Source is remove.c, library is libct.
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* $SEEALSO$
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* REMALL(),REMRIGHT()
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* $END$
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*/
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HB_FUNC (REMLEFT)
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{
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do_remove (DO_REMOVE_REMLEFT);
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return;
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}
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/* $DOC$
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* $FUNCNAME$
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* REMRIGHT()
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* $CATEGORY$
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* CT3 string functions
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* $ONELINER$
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* Remove certain characters at the right of a string
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* $SYNTAX$
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* REMRIGHT (<cString>, [<cSearch|nSearch>]) -> cString
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* $ARGUMENTS$
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* $RETURNS$
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* $DESCRIPTION$
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* TODO: add documentation
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* $EXAMPLES$
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* $TESTS$
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* $STATUS$
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* Started
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* $COMPLIANCE$
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* REMRIGHT() is compatible with CT3's REMRIGHT().
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* $PLATFORMS$
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* All
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* $FILES$
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* Source is remove.c, library is libct.
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* $SEEALSO$
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* REMALL(),REMLEFT()
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* $END$
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*/
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HB_FUNC (REMRIGHT)
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{
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do_remove (DO_REMOVE_REMRIGHT);
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return;
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}
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