rosapps/sysutils/regexpl/ArgumentParser.cpp

   1 /* $Id: ArgumentParser.cpp,v 1.1 2000/10/04 21:04:30 ea Exp $
   2  *
   3  * regexpl - Console Registry Explorer
   4  *
   5  * Copyright (c) 1999-2000 Nedko Arnaoudov <nedkohome@atia.com>
   6  *
   7  * License: GNU GPL
   8  *
   9  */
  10
  11 // ArgumentParser.cpp: implementation of the CArgumentParser class.
  12 //
  13 //////////////////////////////////////////////////////////////////////
  14
  15 #include "ph.h"
  16 #include "ArgumentParser.h"
  17
  18 //////////////////////////////////////////////////////////////////////
  19 // Construction/Destruction
  20 //////////////////////////////////////////////////////////////////////
  21
  22 CArgumentParser::CArgumentParser()
  23 {
  24         m_pchArgumentList = NULL;
  25         m_pchArgumentListEnd = NULL;
  26         m_pchArgument = NULL;
  27 }
  28
  29 CArgumentParser::~CArgumentParser()
  30 {
  31 }
  32
  33 void CArgumentParser::SetArgumentList(TCHAR *pchArguments)
  34 {
  35         TCHAR *pch = m_pchArgumentList = pchArguments;
  36         m_pchArgumentListEnd = pchArguments + _tcslen(pchArguments);
  37
  38         BOOL blnLongArg = FALSE;
  39         while (*pch)
  40         {
  41                 switch(*pch)
  42                 {
  43                 case L'\"':
  44                         if (blnLongArg) blnLongArg = FALSE;
  45                         else blnLongArg = TRUE;
  46                         break;
  47                 case L' ':
  48                 case L'\t':
  49                 case L'\r':
  50                 case L'\n':
  51                         if (!blnLongArg) *pch = 0;
  52                         break;
  53                 }
  54                 pch++;
  55         }
  56
  57         ResetArgumentIteration();
  58 }
  59
  60 TCHAR * CArgumentParser::GetNextArgument()
  61 {
  62         ASSERT(m_pchArgumentList);              // call SetArgumentList() before calling this function
  63         ASSERT(m_pchArgumentListEnd);   // call SetArgumentList() before calling this function
  64         ASSERT(m_pchArgumentListEnd >= m_pchArgumentList);
  65
  66         // if this is begin of iteration
  67         if (!m_pchArgument) m_pchArgument = m_pchArgumentList;
  68
  69         while(m_pchArgument)
  70         {
  71                 if (m_pchArgument > m_pchArgumentListEnd)
  72                 {       // if end of arguments list reached
  73                         ASSERT(m_pchArgument - 1 == m_pchArgumentListEnd);
  74                         break;
  75                 }
  76
  77                 TCHAR *pchArg = m_pchArgument;
  78
  79                 // Next argument
  80                 m_pchArgument += _tcslen(m_pchArgument)+1;
  81
  82                 if(*pchArg)
  83                 {       // if argument is not an empty string
  84                         return pchArg;
  85                 }
  86         }
  87
  88         return NULL;
  89 }
  90
  91 void CArgumentParser::ResetArgumentIteration()
  92 {
  93         m_pchArgument = NULL;
  94 }