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111 lines
2.8 KiB
C++
111 lines
2.8 KiB
C++
/* $Id: ArgumentParser.cpp,v 1.6 2001/05/01 20:53:24 narnaoud Exp $
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*
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* regexpl - Console Registry Explorer
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*
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* Copyright (C) 2000,2001 Nedko Arnaoudov <nedkohome@atia.com>
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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 of the License, or
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* (at your option) 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 program; 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.
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*/
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// ArgumentParser.cpp: implementation of the CArgumentParser class.
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//
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//////////////////////////////////////////////////////////////////////
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#include "ph.h"
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#include "ArgumentParser.h"
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//////////////////////////////////////////////////////////////////////
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// Construction/Destruction
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//////////////////////////////////////////////////////////////////////
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CArgumentParser::CArgumentParser()
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{
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m_pchArgumentList = NULL;
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m_pchArgumentListEnd = NULL;
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m_pchArgument = NULL;
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}
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CArgumentParser::~CArgumentParser()
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{
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}
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void CArgumentParser::SetArgumentList(TCHAR *pchArguments)
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{
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TCHAR *pch = m_pchArgumentList = pchArguments;
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m_pchArgumentListEnd = pchArguments + _tcslen(pchArguments);
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BOOL blnLongArg = FALSE;
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while (*pch)
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{
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switch(*pch)
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{
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case _T('^'): // argument parser ignores escape sequences
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if (pch[1])
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pch++;
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break;
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case _T('\"'):
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blnLongArg = !blnLongArg;
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break;
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case _T(' '):
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case _T('\t'):
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case _T('\r'):
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case _T('\n'):
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if (!blnLongArg)
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*pch = 0;
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break;
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}
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pch++;
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}
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ResetArgumentIteration();
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}
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TCHAR * CArgumentParser::GetNextArgument()
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{
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ASSERT(m_pchArgumentList); // call SetArgumentList() before calling this function
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ASSERT(m_pchArgumentListEnd); // call SetArgumentList() before calling this function
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ASSERT(m_pchArgumentListEnd >= m_pchArgumentList);
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// if this is begin of iteration
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if (!m_pchArgument)
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m_pchArgument = m_pchArgumentList;
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while(m_pchArgument)
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{
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if (m_pchArgument > m_pchArgumentListEnd)
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{ // if end of arguments list reached
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ASSERT(m_pchArgument - 1 == m_pchArgumentListEnd);
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break;
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}
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TCHAR *pchArg = m_pchArgument;
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// Next argument
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m_pchArgument += _tcslen(m_pchArgument)+1;
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if(*pchArg)
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{ // if argument is not an empty string
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return pchArg;
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}
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}
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return NULL;
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}
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void CArgumentParser::ResetArgumentIteration()
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{
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m_pchArgument = NULL;
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}
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