81c9b0506c
* contrib/*
* Deleted 'www.' from harbour-project.org website name.
(www.harbour-project.org -> harbour-project.org)
303 lines
10 KiB
C
303 lines
10 KiB
C
/*
|
|
* $Id$
|
|
*/
|
|
|
|
/*
|
|
* Harbour Project source code:
|
|
* CT3 string functions
|
|
* - CHARONE()
|
|
* - WORDONE()
|
|
*
|
|
* Copyright 2001 IntTec GmbH, Neunlindenstr 32, 79106 Freiburg, Germany
|
|
* Author: Martin Vogel <vogel@inttec.de>
|
|
*
|
|
* 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"
|
|
|
|
|
|
/* defines */
|
|
#define DO_CHARONE_CHARONE 0
|
|
#define DO_CHARONE_WORDONE 1
|
|
|
|
/* helper function for the *one functions */
|
|
static void do_charone( int iSwitch )
|
|
{
|
|
const char *pcString;
|
|
HB_SIZE sStrLen;
|
|
const char *pcDeleteSet;
|
|
HB_SIZE sDeleteSetLen;
|
|
|
|
/* param check */
|
|
if( HB_ISCHAR( 1 ) )
|
|
{
|
|
if( HB_ISCHAR( 2 ) )
|
|
{
|
|
pcString = hb_parc( 2 );
|
|
sStrLen = hb_parclen( 2 );
|
|
pcDeleteSet = hb_parc( 1 );
|
|
sDeleteSetLen = hb_parclen( 1 );
|
|
}
|
|
else
|
|
{
|
|
pcString = hb_parc( 1 );
|
|
sStrLen = hb_parclen( 1 );
|
|
pcDeleteSet = NULL;
|
|
sDeleteSetLen = 0;
|
|
}
|
|
|
|
switch ( iSwitch )
|
|
{
|
|
case DO_CHARONE_CHARONE:
|
|
if( sStrLen > 1 )
|
|
{
|
|
const char *pcSub;
|
|
char *pcRet;
|
|
HB_SIZE sRetStrLen = 0;
|
|
char cCurrent = *pcString;
|
|
|
|
pcRet = ( char * ) hb_xgrab( sStrLen );
|
|
/* copy first char */
|
|
pcRet[sRetStrLen++] = cCurrent;
|
|
for( pcSub = pcString + 1; pcSub < pcString + sStrLen; pcSub++ )
|
|
{
|
|
if( *pcSub != cCurrent )
|
|
{
|
|
cCurrent = *pcSub;
|
|
pcRet[sRetStrLen++] = cCurrent;
|
|
}
|
|
else if( pcDeleteSet != NULL &&
|
|
!ct_at_exact_forward( pcDeleteSet, sDeleteSetLen,
|
|
pcSub, 1, NULL ) )
|
|
{
|
|
pcRet[sRetStrLen++] = cCurrent;
|
|
}
|
|
}
|
|
hb_retclen( pcRet, sRetStrLen );
|
|
hb_xfree( pcRet );
|
|
}
|
|
else /* if( sStrLen > 1 ) */
|
|
{
|
|
/* algorithm does nothing to 1-char-strings */
|
|
hb_retclen( pcString, sStrLen );
|
|
}
|
|
break;
|
|
|
|
case DO_CHARONE_WORDONE:
|
|
if( sStrLen > 3 && sDeleteSetLen >= 2 )
|
|
{
|
|
const char *pcSub;
|
|
char *pcRet;
|
|
HB_SIZE sRetStrLen = 0;
|
|
char cCurrent1 = pcString[0];
|
|
char cCurrent2 = pcString[1];
|
|
|
|
pcRet = ( char * ) hb_xgrab( sStrLen );
|
|
/* copy first double char */
|
|
pcRet[sRetStrLen++] = cCurrent1;
|
|
pcRet[sRetStrLen++] = cCurrent2;
|
|
|
|
for( pcSub = pcString + 2; pcSub < pcString + sStrLen - 1; pcSub += 2 )
|
|
{
|
|
if( !( pcSub[0] == cCurrent1 && pcSub[1] == cCurrent2 ) )
|
|
{
|
|
cCurrent1 = pcSub[0];
|
|
cCurrent2 = pcSub[1];
|
|
pcRet[sRetStrLen++] = cCurrent1;
|
|
pcRet[sRetStrLen++] = cCurrent2;
|
|
}
|
|
else if( pcDeleteSet != NULL )
|
|
{
|
|
const char *pc = NULL;
|
|
const char *pStart = pcDeleteSet;
|
|
HB_SIZE sLen = sDeleteSetLen;
|
|
|
|
while( sLen >= 2 &&
|
|
( pc = ct_at_exact_forward( pStart, sLen, pcSub,
|
|
2, NULL ) ) != 0 &&
|
|
( pc - pcDeleteSet ) % 2 == 1 )
|
|
{
|
|
pStart = pc + 1;
|
|
sLen = sDeleteSetLen - ( pStart - pcDeleteSet );
|
|
}
|
|
if( pc == NULL )
|
|
{
|
|
pcRet[sRetStrLen++] = cCurrent1;
|
|
pcRet[sRetStrLen++] = cCurrent2;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* copy last character if string len is odd */
|
|
if( sStrLen & 1 )
|
|
{
|
|
pcRet[sRetStrLen++] = pcString[sStrLen - 1];
|
|
}
|
|
hb_retclen( pcRet, sRetStrLen );
|
|
hb_xfree( pcRet );
|
|
}
|
|
else /* if( sStrLen > 3 ) */
|
|
{
|
|
/* algorithm does nothing to 3-char-strings */
|
|
hb_retclen( pcString, sStrLen );
|
|
}
|
|
break;
|
|
} /* switch( iSwitch ) */
|
|
}
|
|
else /* if( HB_ISCHAR( 1 ) ) */
|
|
{
|
|
PHB_ITEM pSubst = NULL;
|
|
int iArgErrorMode = ct_getargerrormode();
|
|
|
|
if( iArgErrorMode != CT_ARGERR_IGNORE )
|
|
pSubst = ct_error_subst( ( HB_USHORT ) iArgErrorMode, EG_ARG,
|
|
iSwitch == DO_CHARONE_CHARONE ?
|
|
CT_ERROR_CHARONE : CT_ERROR_WORDONE,
|
|
NULL, HB_ERR_FUNCNAME, 0, EF_CANSUBSTITUTE,
|
|
HB_ERR_ARGS_BASEPARAMS );
|
|
if( pSubst != NULL )
|
|
hb_itemReturnRelease( pSubst );
|
|
else
|
|
hb_retc_null();
|
|
}
|
|
}
|
|
|
|
|
|
/* $DOC$
|
|
* $FUNCNAME$
|
|
* CHARONE()
|
|
* $CATEGORY$
|
|
* CT3 string functions
|
|
* $ONELINER$
|
|
* Reduce multiple occurences of a character to one
|
|
* $SYNTAX$
|
|
* CHARONE ([<cCharactersToReduce>,] <cString>) -> cReducedString
|
|
* $ARGUMENTS$
|
|
* [<cCharactersToReduce>] specifies the characters the multiple
|
|
* occurences of which should be reduced to one
|
|
* Default: All characters.
|
|
* <cString> specifies the processed string
|
|
* $RETURNS$
|
|
* <cReducedString> the string with the reduced occurences
|
|
* $DESCRIPTION$
|
|
* The CHARONE() function reduces multiple occurences of characters in
|
|
* <cString> to a single one. It is important to note that the multiple
|
|
* occurences must occur directly one behind the other. This behaviour is
|
|
* is in contrast to the CHARLIST() function.
|
|
* $EXAMPLES$
|
|
* ? CHARONE("122333a123") // "123a123"
|
|
* ? CHARONE("A B CCCD") // "A B CD"
|
|
* ? CHARONE(" ", "A B A B") // "A B A B"
|
|
* ? CHARONE("o", "122oooB12o") // "122oB12o"
|
|
* $TESTS$
|
|
* CHARONE("122333a123") == "123a123"
|
|
* CHARONE("A B CCCD") == "A B CD"
|
|
* CHARONE(" ", "A B A B") == "A B A B"
|
|
* CHARONE("o", "122oooB12o") == "122oB12o"
|
|
* $STATUS$
|
|
* Ready
|
|
* $COMPLIANCE$
|
|
* CHARONE() is compatible with CT3's CHARONE().
|
|
* $PLATFORMS$
|
|
* All
|
|
* $FILES$
|
|
* Source is charone.c, library is ct3.
|
|
* $SEEALSO$
|
|
* CHARREM() WORDONE()
|
|
* $END$
|
|
*/
|
|
|
|
HB_FUNC( CHARONE )
|
|
{
|
|
do_charone( DO_CHARONE_CHARONE );
|
|
}
|
|
|
|
|
|
/* $DOC$
|
|
* $FUNCNAME$
|
|
* WORDONE()
|
|
* $CATEGORY$
|
|
* CT3 string functions
|
|
* $ONELINER$
|
|
* Reduce multiple occurences of a double character to one
|
|
* $SYNTAX$
|
|
* WORDONE ([<cDoubleCharactersToReduce>,] <cString>) -> cReducedString
|
|
* $ARGUMENTS$
|
|
* [<cDoubleCharactersToReduce>] specifies the double characters the multiple
|
|
* occurences of which should be reduced to one
|
|
* Default: All characters.
|
|
* <cString> specifies the processed string
|
|
* $RETURNS$
|
|
* <cReducedString> the string with the reduced occurences
|
|
* $DESCRIPTION$
|
|
* The WORDONE() function reduces multiple occurences of double characters in
|
|
* <cString> to a single one. It is important to note that the multiple
|
|
* occurences must occur directly one behind the other.
|
|
* $EXAMPLES$
|
|
* ? WORDONE("12ABAB12") // "12AB12"
|
|
* ? WORDONE("1AAAA2") // "1AAAA2"
|
|
* ? WORDONE("12", "1212ABAB") // "12ABAB"
|
|
* $TESTS$
|
|
* WORDONE("12ABAB12") == "12AB12"
|
|
* WORDONE("1AAAA2") == "1AAAA2"
|
|
* WORDONE("12", "1212ABAB") == "12ABAB"
|
|
* $STATUS$
|
|
* Ready
|
|
* $COMPLIANCE$
|
|
* WORDONE() is compatible with CT3's WORDONE().
|
|
* $PLATFORMS$
|
|
* All
|
|
* $FILES$
|
|
* Source is charone.c, library is ct3.
|
|
* $SEEALSO$
|
|
* CHARONE() CHARREM()
|
|
* $END$
|
|
*/
|
|
|
|
HB_FUNC( WORDONE )
|
|
{
|
|
do_charone( DO_CHARONE_WORDONE );
|
|
}
|