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colorind.c
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colorind.c
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/*
* hb_ColorIndex() function
*
* Copyright 1999-2008 Viktor Szakats (vszakats.net/harbour)
*
* 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.txt. If not, write to
* the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307 USA (or visit the web site https://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 "hbapi.h"
HB_FUNC( HB_COLORINDEX )
{
if( HB_ISCHAR( 1 ) && HB_ISNUM( 2 ) )
{
const char * pszColor = hb_parc( 1 );
HB_SIZE nColorPos;
int iColorIndex = hb_parni( 2 );
/* Skip the given number of commas */
for( nColorPos = 0; pszColor[ nColorPos ] != '\0' && iColorIndex > 0; nColorPos++ )
{
if( pszColor[ nColorPos ] == ',' )
iColorIndex--;
}
/* if found, continue */
if( iColorIndex == 0 )
{
HB_SIZE nColorLen;
/* Skip the spaces after the comma */
while( pszColor[ nColorPos ] == ' ' )
nColorPos++;
/* Search for next comma or end of string */
nColorLen = 0;
while( pszColor[ nColorPos + nColorLen ] != '\0' &&
pszColor[ nColorPos + nColorLen ] != ',' )
nColorLen++;
/* Skip the trailing spaces */
while( nColorLen > 0 &&
pszColor[ nColorPos + nColorLen - 1 ] == ' ' )
nColorLen--;
/* Return the string */
hb_retclen( pszColor + nColorPos, nColorLen );
}
else
hb_retc_null();
}
else
hb_retc_null();
}