modules/rosapps/applications/sysutils/regexpl/ShellCommandsLinkedList.cpp

   1 /*
   2  * regexpl - Console Registry Explorer
   3  *
   4  * Copyright (C) 2000-2005 Nedko Arnaudov <nedko@users.sourceforge.net>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; see the file COPYING.  If not, write to
  18  * the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  19  * Boston, MA 02111-1307, USA.
  20  */
  21
  22 // ShellCommandsLinkedList.cpp: implementation of the CShellCommandsLinkedList class.
  23 //
  24 //////////////////////////////////////////////////////////////////////
  25
  26 #include "ph.h"
  27 #include "ShellCommandsLinkedList.h"
  28
  29 //////////////////////////////////////////////////////////////////////
  30 // Construction/Destruction
  31 //////////////////////////////////////////////////////////////////////
  32
  33 CShellCommandsLinkedList::CShellCommandsLinkedList(CConsole& rConsole):m_rConsole(rConsole)
  34 {
  35         m_pRoot = NULL;
  36 }
  37
  38 CShellCommandsLinkedList::~CShellCommandsLinkedList()
  39 {
  40 }
  41
  42 void CShellCommandsLinkedList::AddCommand(CShellCommand *pCommand)
  43 {
  44         // Create new node
  45         SNode *pNewNode = new (std::nothrow) SNode;
  46         if (pNewNode == NULL)
  47                 return;
  48
  49         pNewNode->m_pData = pCommand;
  50
  51         // add new node to the end
  52         if (m_pRoot)
  53         {
  54                 SNode *pLastNode = m_pRoot;
  55
  56                 while (pLastNode->m_pNext)
  57                         pLastNode = pLastNode->m_pNext;
  58
  59                 pLastNode->m_pNext = pNewNode;
  60         }
  61         else
  62         {
  63                 m_pRoot = pNewNode;
  64         }
  65 }
  66
  67 int CShellCommandsLinkedList::Execute(CArgumentParser& rArgumentParser, int& nReturnValue)
  68 {
  69         rArgumentParser.ResetArgumentIteration();
  70
  71         const TCHAR *pchCommand = rArgumentParser.GetNextArgument();
  72
  73         if (pchCommand == NULL) // empty command line
  74                 return -2;
  75
  76         int i = -1;
  77
  78         SNode *pNode = m_pRoot;
  79
  80         while(pNode)
  81         {
  82                 i++;
  83                 if (pNode->m_pData->Match(pchCommand))
  84                 {
  85                         nReturnValue = pNode->m_pData->Execute(m_rConsole,rArgumentParser);
  86                         return i;
  87                 }
  88                 pNode = pNode->m_pNext;
  89         }
  90
  91         return -1;
  92 }
  93
  94 CShellCommand * CShellCommandsLinkedList::Match(const TCHAR * pchCommand)
  95 {
  96         SNode *pNode = m_pRoot;
  97
  98         while(pNode)
  99         {
 100                 if (pNode->m_pData->Match(pchCommand))
 101                         return pNode->m_pData;
 102                 pNode = pNode->m_pNext;
 103         }
 104
 105         return NULL;
 106 }
 107
 108 POSITION CShellCommandsLinkedList::GetFirstCommandPosition()
 109 {
 110         return (POSITION)m_pRoot;
 111 }
 112
 113 CShellCommand * CShellCommandsLinkedList::GetNextCommand(POSITION& rPos)
 114 {
 115         CShellCommand * pCommand = ((SNode *)rPos)->m_pData;
 116         rPos = (POSITION)(((SNode *)rPos)->m_pNext);
 117         return pCommand;
 118 }
 119