reactos/rosapps/applications/sysutils/regexpl/ShellCommandHelp.cpp

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/* $Id$
*
* regexpl - Console Registry Explorer
*
* Copyright (C) 2000-2005 Nedko Arnaudov <nedko@users.sourceforge.net>
*
* 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.
*/
// ShellCommandHelp.cpp: implementation of the CShellCommandHelp class.
//
//////////////////////////////////////////////////////////////////////
#include "ph.h"
#include "ShellCommandHelp.h"
#define HELP_CMD _T("HELP")
#define HELP_CMD_SHORT_DESC HELP_CMD _T(" command provides help information about Registry Explorer commands.\n")
//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////
CShellCommandHelp::CShellCommandHelp(CShellCommandsLinkedList& rCommandsLinkedList):m_rCommandsLinkedList(rCommandsLinkedList)
{
}
CShellCommandHelp::~CShellCommandHelp()
{
}
BOOL CShellCommandHelp::Match(const TCHAR *pchCommand)
{
return _tcsicmp(pchCommand,HELP_CMD) == 0;
}
int CShellCommandHelp::Execute(CConsole &rConsole, CArgumentParser& rArguments)
{
const TCHAR *pchArg = rArguments.GetNextArgument();
CShellCommand *pCommand;
if (pchArg == NULL)
{
POSITION pos = m_rCommandsLinkedList.GetFirstCommandPosition();
while(pos)
{
pCommand = m_rCommandsLinkedList.GetNextCommand(pos);
rConsole.Write(pCommand->GetHelpShortDescriptionString());
}
return 0;
}
if (_tcsicmp(pchArg,_T("GPL")) == 0)
{
HRSRC hrcGPL;
HGLOBAL hGPL;
char *pchGPL;
DWORD dwSize;
if ((hrcGPL = FindResource(NULL, _T("GPL"), _T("LICENSE")))&&
(hGPL = LoadResource(NULL,hrcGPL))&&
(pchGPL = (char *)LockResource(hGPL))&&
(dwSize = SizeofResource(NULL,hrcGPL)))
{
// save last char
char pchSaved[2];
pchSaved[0] = pchGPL[dwSize-1];
pchSaved[1] = 0;
// make null-terminated string
pchGPL[dwSize-1] = 0;
// replace all non-printable chars except CR, LF and HTAB with spaces
for (DWORD i = 0; i < dwSize ; i++)
if ((!isprint(pchGPL[i]))&&(pchGPL[i] != '\r')&&(pchGPL[i] != '\n')&&(pchGPL[i] != '\t'))
pchGPL[i] = ' ';
rConsole.Write(pchGPL);
rConsole.Write(pchSaved);
}
else
{
rConsole.Write(_T("Internal error cannot load GPL.\n"));
}
return 0;
}
while (pchArg)
{
pCommand = m_rCommandsLinkedList.Match(pchArg);
if ((!pCommand)&&((_tcsicmp(pchArg,_T("/?")) == 0)||(_tcsicmp(pchArg,_T("-?")) == 0)))
pCommand = this;
if (pCommand)
{
rConsole.Write(pCommand->GetHelpString());
}
else
{
rConsole.Write(_T("HELP: Unknown command \""));
rConsole.Write(pchArg);
rConsole.Write(_T("\"\n"));
}
pchArg = rArguments.GetNextArgument();
}
return 0;
}
const TCHAR * CShellCommandHelp::GetHelpString()
{
return HELP_CMD_SHORT_DESC
_T("Syntax: ") HELP_CMD _T(" [<COMMAND>] [/?]\n")
_T(" COMMAND - Command for which help will be displayed.\n")
_T(" /? - This help.\n\n")
_T("Without parameters, command lists available commands.\n");
}
const TCHAR * CShellCommandHelp::GetHelpShortDescriptionString()
{
return HELP_CMD_SHORT_DESC;
}