reactos/rosapps/sysutils/regexpl/ShellCommandDeleteValue.cpp

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/* $Id: ShellCommandDeleteValue.cpp,v 1.4 2001/01/13 23:55:37 narnaoud Exp $
*
* regexpl - Console Registry Explorer
*
* Copyright (C) 2000,2001 Nedko Arnaoudov <nedkohome@atia.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
// ShellCommandDeleteValue.cpp: implementation of the CShellCommandDeleteValue class.
//
//////////////////////////////////////////////////////////////////////
#include "ph.h"
#include "ShellCommandDeleteValue.h"
#include "RegistryExplorer.h"
#include "Pattern.h"
#define DV_CMD _T("DV")
#define DV_CMD_LENGTH COMMAND_LENGTH(DV_CMD)
#define DV_CMD_SHORT_DESC DV_CMD _T(" command is used to delete value.\n")
//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////
CShellCommandDeleteValue::CShellCommandDeleteValue(CRegistryTree& rTree):m_rTree(rTree)
{
}
CShellCommandDeleteValue::~CShellCommandDeleteValue()
{
}
BOOL CShellCommandDeleteValue::Match(const TCHAR *pszCommand)
{
return _tcsicmp(pszCommand,DV_CMD) == 0;
}
int CShellCommandDeleteValue::Execute(CConsole &rConsole, CArgumentParser& rArguments)
{
rArguments.ResetArgumentIteration();
TCHAR *pszCommandItself = rArguments.GetNextArgument();
TCHAR *pszParameter;
TCHAR *pszValueFull = NULL;
BOOL blnHelp = FALSE;
if ((_tcsnicmp(pszCommandItself,DV_CMD _T(".."),DV_CMD_LENGTH+2*sizeof(TCHAR)) == 0)||
(_tcsnicmp(pszCommandItself,DV_CMD _T("\\"),DV_CMD_LENGTH+1*sizeof(TCHAR)) == 0))
{
pszValueFull = pszCommandItself + DV_CMD_LENGTH;
}
else if (_tcsnicmp(pszCommandItself,DV_CMD _T("/"),DV_CMD_LENGTH+1*sizeof(TCHAR)) == 0)
{
pszParameter = pszCommandItself + DV_CMD_LENGTH;
goto CheckValueArgument;
}
while((pszParameter = rArguments.GetNextArgument()) != NULL)
{
CheckValueArgument:
if ((_tcsicmp(pszParameter,_T("/?")) == 0)
||(_tcsicmp(pszParameter,_T("-?")) == 0))
{
blnHelp = TRUE;
break;
}
else if (!pszValueFull)
{
pszValueFull = pszParameter;
}
else
{
rConsole.Write(_T("Bad parameter: "));
rConsole.Write(pszParameter);
rConsole.Write(_T("\n"));
}
}
CRegistryKey Key;
TCHAR *pszValueNamePattern;
const TCHAR *pszPath;
if (blnHelp)
{
rConsole.Write(GetHelpString());
return 0;
}
if (pszValueFull)
{
if (_tcscmp(pszValueFull,_T("\\")) == 0)
goto CommandNAonRoot;
TCHAR *pchSep = _tcsrchr(pszValueFull,_T('\\'));
pszValueNamePattern = pchSep?(pchSep+1):(pszValueFull);
pszPath = pchSep?pszValueFull:_T(".");
if (pchSep)
*pchSep = 0;
}
else
{
pszValueNamePattern = _T("");
pszPath = _T(".");
}
{
size_t s = _tcslen(pszValueNamePattern);
if (s && (pszValueNamePattern[0] == _T('\"'))&&(pszValueNamePattern[s-1] == _T('\"')))
{
pszValueNamePattern[s-1] = 0;
pszValueNamePattern++;
}
}
if (!m_rTree.GetKey(pszPath,KEY_QUERY_VALUE|KEY_SET_VALUE,Key))
{
rConsole.Write(m_rTree.GetLastErrorDescription());
return 0;
}
if (!Key.IsRoot())
{ // not root key ???
TCHAR Buffer[254];
DWORD dwMaxValueNameLength;
LONG nError = Key.GetMaxValueNameLength(dwMaxValueNameLength);
if (nError != ERROR_SUCCESS)
{
_stprintf(Buffer,_T("Cannot query info about %s key. Error is %u\n"),Key.GetKeyName(),(unsigned int)nError);
rConsole.Write(Buffer);
return 0;
}
TCHAR *pszValueName = new TCHAR[dwMaxValueNameLength];
if (!pszValueName)
{
rConsole.Write("Out of memory.");
return 0;
}
Key.InitValueEnumeration(pszValueName,dwMaxValueNameLength,NULL,0,NULL);
while ((nError = Key.GetNextValue()) == ERROR_SUCCESS)
{
if (PatternMatch(pszValueNamePattern,pszValueName))
{
nError = Key.DeleteValue(pszValueName);
if (nError != ERROR_SUCCESS)
{
_stprintf(Buffer,_T("Cannot delete value. Error is %u\n"),(unsigned int)nError);
rConsole.Write(Buffer);
}
else
{
InvalidateCompletion();
}
Key.InitValueEnumeration(pszValueName,dwMaxValueNameLength,NULL,0,NULL); // reset iteration
}
}
} // if (pKey)
else
{
CommandNAonRoot:
rConsole.Write(DV_CMD COMMAND_NA_ON_ROOT);
}
return 0;
}
const TCHAR * CShellCommandDeleteValue::GetHelpString()
{
return DV_CMD_SHORT_DESC
_T("Syntax: ") DV_CMD _T(" [<PATH>][<VALUE_NAME>] [/?]\n\n")
_T(" <PATH> - Optional relative path of key which value will be delete.\n")
_T(" <VALUE_NAME> - Name pattern of key's value. Default is key's default value.\n")
_T(" /? - This help.\n\n");
}
const TCHAR * CShellCommandDeleteValue::GetHelpShortDescriptionString()
{
return DV_CMD_SHORT_DESC;
}