151 lines
5.0 KiB
C
151 lines
5.0 KiB
C
/*
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* Harbour Project source code:
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* StrFormat() function
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*
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* Copyright 1999-2001 Viktor Szakats (vszakats.net/harbour)
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* www - http://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.txt. 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 "hbapi.h"
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#include "hbapiitm.h"
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#define HB_STRFORMAT_PARNUM_MAX_ 9
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#define POS_TO_PAR( pos ) ( pos + 2 )
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typedef struct
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{
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char * raw;
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const char * buffer;
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HB_SIZE nLen;
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HB_BOOL bFreeReq;
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} STRPAR;
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/* TODO: Add support for embedded PICTURE string in mask string. */
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/* TODO: Add a way to control trimming. (but 99.99% of the time, trimming is actually useful) */
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HB_FUNC( STRFORMAT )
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{
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int nParNum = hb_pcount();
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if( nParNum >= 1 )
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{
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const char * pszMask = hb_parcx( 1 );
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HB_SIZE nMaskLen = hb_parclen( 1 );
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HB_SIZE nMaskPos;
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int nPos;
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HB_SIZE nRetValLen;
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char * pszRetVal;
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char * pszRetValSave;
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STRPAR strpar[ HB_STRFORMAT_PARNUM_MAX_ ];
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memset( strpar, 0, sizeof( strpar ) );
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nParNum--;
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if( nParNum > HB_STRFORMAT_PARNUM_MAX_ )
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nParNum = HB_STRFORMAT_PARNUM_MAX_;
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/* Calculate length of return value */
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nRetValLen = 0;
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for( nMaskPos = 0; nMaskPos < nMaskLen; nMaskPos++ )
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{
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if( pszMask[ nMaskPos ] == '%' )
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{
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nMaskPos++;
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if( pszMask[ nMaskPos ] == '%' )
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nRetValLen++;
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else if( pszMask[ nMaskPos ] >= '1' && pszMask[ nMaskPos ] <= ( int ) ( nParNum + '0' ) )
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{
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nPos = pszMask[ nMaskPos ] - '1';
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strpar[ nPos ].raw = hb_itemString( hb_param( POS_TO_PAR( nPos ), HB_IT_ANY ), &strpar[ nPos ].nLen, &strpar[ nPos ].bFreeReq );
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/* AllTrim() */
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strpar[ nPos ].nLen = hb_strRTrimLen( strpar[ nPos ].raw, strpar[ nPos ].nLen, HB_FALSE );
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strpar[ nPos ].buffer = hb_strLTrim( strpar[ nPos ].raw, &strpar[ nPos ].nLen );
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nRetValLen += strpar[ nPos ].nLen;
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}
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}
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else
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nRetValLen++;
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}
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/* Assemble return value */
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pszRetVal = pszRetValSave = ( char * ) hb_xgrab( nRetValLen + 1 );
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for( nMaskPos = 0; nMaskPos < nMaskLen; nMaskPos++ )
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{
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if( pszMask[ nMaskPos ] == '%' )
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{
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nMaskPos++;
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if( pszMask[ nMaskPos ] == '%' )
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*pszRetVal++ = pszMask[ nMaskPos ];
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else if( pszMask[ nMaskPos ] >= '1' && pszMask[ nMaskPos ] <= ( int ) ( nParNum + '0' ) )
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{
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nPos = pszMask[ nMaskPos ] - '1';
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memcpy( pszRetVal, strpar[ nPos ].buffer, strpar[ nPos ].nLen );
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pszRetVal += strpar[ nPos ].nLen;
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}
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}
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else
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*pszRetVal++ = pszMask[ nMaskPos ];
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}
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hb_retclen_buffer( pszRetValSave, nRetValLen );
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/* Free parameter buffers */
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for( nPos = 0; nPos < HB_STRFORMAT_PARNUM_MAX_; nPos++ )
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{
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if( strpar[ nPos ].raw && strpar[ nPos ].bFreeReq )
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hb_xfree( strpar[ nPos ].raw );
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}
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}
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else
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hb_retc_null();
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}
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