rosapps/sysutils/regexpl/ArgumentParser.cpp

   1 /* $Id: ArgumentParser.cpp,v 1.3 2001/01/10 01:25:29 narnaoud Exp $
   2  *
   3  * regexpl - Console Registry Explorer
   4  *
   5  * Copyright (C) 2000 Nedko Arnaoudov <nedkohome@atia.com>
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; see the file COPYING.  If not, write to
  19  * the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  20  * Boston, MA 02111-1307, USA.
  21  */
  22
  23 // ArgumentParser.cpp: implementation of the CArgumentParser class.
  24 //
  25 //////////////////////////////////////////////////////////////////////
  26
  27 #include "ph.h"
  28 #include "ArgumentParser.h"
  29
  30 //////////////////////////////////////////////////////////////////////
  31 // Construction/Destruction
  32 //////////////////////////////////////////////////////////////////////
  33
  34 CArgumentParser::CArgumentParser()
  35 {
  36         m_pchArgumentList = NULL;
  37         m_pchArgumentListEnd = NULL;
  38         m_pchArgument = NULL;
  39 }
  40
  41 CArgumentParser::~CArgumentParser()
  42 {
  43 }
  44
  45 void CArgumentParser::SetArgumentList(TCHAR *pchArguments)
  46 {
  47 TCHAR *pch = m_pchArgumentList = pchArguments;
  48 m_pchArgumentListEnd = pchArguments + _tcslen(pchArguments);
  49
  50  BOOL blnLongArg = FALSE;
  51  while (*pch)
  52  {
  53    switch(*pch)
  54    {
  55    case _T('\"'):
  56     blnLongArg = !blnLongArg;
  57                 break;
  58    case _T(' '):
  59    case _T('\t'):
  60    case _T('\r'):
  61    case _T('\n'):
  62      if (!blnLongArg)
  63        *pch = 0;
  64      break;
  65    }
  66    pch++;
  67  }
  68
  69  ResetArgumentIteration();
  70 }
  71
  72 TCHAR * CArgumentParser::GetNextArgument()
  73 {
  74         ASSERT(m_pchArgumentList);              // call SetArgumentList() before calling this function
  75         ASSERT(m_pchArgumentListEnd);   // call SetArgumentList() before calling this function
  76         ASSERT(m_pchArgumentListEnd >= m_pchArgumentList);
  77
  78         // if this is begin of iteration
  79         if (!m_pchArgument)
  80     m_pchArgument = m_pchArgumentList;
  81
  82         while(m_pchArgument)
  83         {
  84                 if (m_pchArgument > m_pchArgumentListEnd)
  85                 {       // if end of arguments list reached
  86                         ASSERT(m_pchArgument - 1 == m_pchArgumentListEnd);
  87                         break;
  88                 }
  89
  90                 TCHAR *pchArg = m_pchArgument;
  91
  92                 // Next argument
  93                 m_pchArgument += _tcslen(m_pchArgument)+1;
  94
  95                 if(*pchArg)
  96                 {       // if argument is not an empty string
  97                         return pchArg;
  98                 }
  99         }
 100
 101         return NULL;
 102 }
 103
 104 void CArgumentParser::ResetArgumentIteration()
 105 {
 106         m_pchArgument = NULL;
 107 }