Files
harbour-core/contrib/hbct/range.c
Viktor Szakats 5a2a287752 2017-09-08 16:00 UTC Viktor Szakats (vszakats users.noreply.github.com)
* *
    * partial sync with the 3.4 fork codebase. These are the things
      synces for the most part:
      - copyright headers
      - grammar/typos in comments and some readmes
      - comment/whitespace/decorations
      - variable scoping in C files
      - DO CASE/SWITCH and some other alternate syntax usage
      - minimal amount of human readable text in strings
      - minor code updates
      - HB_TRACE() void * casts for pointers and few other changes to
        avoid C compiler warnings
      - various other, minor code cleanups
      - only Harbour/C code/headers were touched in src, utils, contrib,
        include. No 3rd party code, no make files, and with just a few
        exceptions, no 'tests' code was touched.
      - certain components were not touched were 3.4 diverged too much
        already, like f.e. hbmk2, hbssl, hbcurl, hbexpat
      - the goal was that no actual program logic should be altered by
        these changes. Except some possible minor exceptions, any such
        change is probably a bug in this patch.
      It's a massive patch, if you find anything broken after it, please
      open an Issue with the details. Build test was done on macOS.
      The goal is make it easier to see what actual code/logic was changed
      in 3.4 compared to 3.2 and to make patches easier to apply in both
      ways.
2017-09-08 16:25:13 +00:00

203 lines
6.5 KiB
C

/*
* RangeRem() and RangeRepl() CT3 string functions
*
* 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( RANGEREM )
{
if( ( hb_parclen( 1 ) > 0 || HB_ISNUM( 1 ) ) &&
( hb_parclen( 2 ) > 0 || HB_ISNUM( 2 ) ) && HB_ISCHAR( 3 ) )
{
const char * pcString = hb_parc( 3 );
HB_SIZE sStrLen = hb_parclen( 3 );
char * pcRet;
const unsigned char * pc;
unsigned char ucChar1, ucChar2;
HB_SIZE sRetIndex;
int iMode;
if( HB_ISCHAR( 1 ) )
ucChar1 = *( ( const unsigned char * ) hb_parc( 1 ) );
else
ucChar1 = ( unsigned char ) ( hb_parni( 1 ) % 256 );
if( HB_ISCHAR( 2 ) )
ucChar2 = *( ( const unsigned char * ) hb_parc( 2 ) );
else
ucChar2 = ( unsigned char ) ( hb_parni( 2 ) % 256 );
iMode = ( ucChar2 < ucChar1 );
pcRet = ( char * ) hb_xgrab( sStrLen + 1 );
sRetIndex = 0;
for( pc = ( const unsigned char * ) pcString; pc < ( const unsigned char * ) pcString + sStrLen; pc++ )
{
int iBool = ( ( *pc ) >= ucChar1 );
if( iMode )
iBool |= ( ( *pc ) <= ucChar2 );
else
iBool &= ( ( *pc ) <= ucChar2 );
if( ! iBool )
{
*( pcRet + sRetIndex ) = *pc;
sRetIndex++;
}
}
hb_retclen( pcRet, sRetIndex );
hb_xfree( pcRet );
}
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_RANGEREM, NULL, HB_ERR_FUNCNAME, 0,
EF_CANSUBSTITUTE, HB_ERR_ARGS_BASEPARAMS );
if( pSubst != NULL )
hb_itemReturnRelease( pSubst );
else if( HB_ISCHAR( 3 ) )
hb_retclen( hb_parc( 3 ), hb_parclen( 3 ) );
else
hb_retc_null();
}
}
HB_FUNC( RANGEREPL )
{
int iNoRef = ct_getref() && HB_ISBYREF( 3 );
if( ( hb_parclen( 1 ) > 0 || HB_ISNUM( 1 ) ) &&
( hb_parclen( 2 ) > 0 || HB_ISNUM( 2 ) ) &&
HB_ISCHAR( 3 ) && ( hb_parclen( 4 ) > 0 || HB_ISNUM( 4 ) ) )
{
const char * pcString = hb_parc( 3 );
HB_SIZE sStrLen = hb_parclen( 3 );
char * pcRet;
const unsigned char * pc;
unsigned char ucChar1, ucChar2, ucReplace;
HB_SIZE sRetIndex;
int iMode;
if( HB_ISCHAR( 1 ) )
ucChar1 = *( ( const unsigned char * ) hb_parc( 1 ) );
else
ucChar1 = ( unsigned char ) ( hb_parni( 1 ) % 256 );
if( HB_ISCHAR( 2 ) )
ucChar2 = *( ( const unsigned char * ) hb_parc( 2 ) );
else
ucChar2 = ( unsigned char ) ( hb_parni( 2 ) % 256 );
if( HB_ISCHAR( 4 ) )
ucReplace = *( ( const unsigned char * ) hb_parc( 4 ) );
else
ucReplace = ( unsigned char ) ( hb_parni( 4 ) % 256 );
iMode = ( ucChar2 < ucChar1 );
pcRet = ( char * ) hb_xgrab( sStrLen + 1 );
sRetIndex = 0;
for( pc = ( const unsigned char * ) pcString; pc < ( const unsigned char * ) pcString + sStrLen; pc++ )
{
int iBool = ( ( *pc ) >= ucChar1 );
if( iMode )
iBool |= ( ( *pc ) <= ucChar2 );
else
iBool &= ( ( *pc ) <= ucChar2 );
if( iBool )
{
*( pcRet + sRetIndex ) = ucReplace;
sRetIndex++;
}
else
{
*( pcRet + sRetIndex ) = *pc;
sRetIndex++;
}
}
hb_storclen( pcRet, sStrLen, 3 );
if( iNoRef )
/* Contrary to the official documentation, RangeRepl() returns NIL instead of .F.
* in this situation. If the string is not passed by reference, it returns the
* string regardless of iNoRef. */
hb_ret();
else
hb_retclen( pcRet, sStrLen );
hb_xfree( pcRet );
}
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_RANGEREPL, NULL, HB_ERR_FUNCNAME, 0,
EF_CANSUBSTITUTE, HB_ERR_ARGS_BASEPARAMS );
if( pSubst != NULL )
hb_itemReturnRelease( pSubst );
else if( iNoRef )
hb_ret();
else if( HB_ISCHAR( 3 ) )
hb_retclen( hb_parc( 3 ), hb_parclen( 3 ) );
else
hb_retc_null();
}
}