ProSysLib: Dissecting the Process

// PSLCmdParams.cpp : Implementation of CPSLCmdParams

#include "stdafx.h"
#include "PSLCmdParams.h"


CPSLCmdParams::CPSLCmdParams()
{
}

HRESULT CPSLCmdParams::OnIndexOutOfRange()
{
	return MakeException(exIndexOutOfRange);
}

HRESULT CPSLCmdParams::FinalConstruct()
{
	PSL_BEGIN

	InternalUpdate();
	
	PSL_END
}

void CPSLCmdParams::FinalRelease()
{
}

void CPSLCmdParams::InternalUpdate()
{
	CCritSecLock cs(m_csCollection);

	m_coll.clear(); // Releases interfaces and clears the collection;
					// NOTE: .NET clients catch up interfaces, so takes
					// about 30 seconds before they are garbaged by .NET;

	vector<tstring> commands;
	LPTSTR sCmd = ::GetCommandLine();
	LPTSTR ParamsPtr = NULL;

	if(sCmd[0] == '"')
		ParamsPtr = _tcschr(sCmd + 1, '"');
	else
		ParamsPtr = _tcschr(sCmd, ' ');

	if(ParamsPtr)
		ParamsPtr ++; // Point at the next symbol after space or quote;
	else
		return;

	long L = (long)_tcslen(ParamsPtr);
	LPTSTR LineEnd = ParamsPtr + L;

	TCHAR * pStart = NULL; // Position where command started;
	bool bQuoted = false;
	TCHAR symbol = 0;
	TCHAR * pCommand = new TCHAR[L];
	while(ParamsPtr < LineEnd)
	{
		symbol = ParamsPtr[0];
		if(symbol == ' ')
		{
			if(pStart)
			{
				if(!bQuoted)
				{
					_tcsncpy_s(pCommand, L, pStart, ParamsPtr - pStart);
					commands.push_back(pCommand);
					pStart = NULL;
					bQuoted = false;
				}
			}
		}
		else
			if(symbol == '"')
			{
				if(pStart)
				{
					if(bQuoted) // end of the value;
					{
						if(ParamsPtr[1] == ' ' || ParamsPtr[1] == '\0')
						{
							_tcsncpy_s(pCommand, L, pStart, ParamsPtr - pStart + 1);
							commands.push_back(pCommand);
							pStart = NULL;	
						}
						bQuoted = false;
					}
					else
						bQuoted = true;
				}
				else
				{
					pStart = ParamsPtr;
					bQuoted = true;
				}
			} 
			else
			{
				if(!pStart)
				{
					pStart = ParamsPtr;
					bQuoted = false;
				}
			}

		ParamsPtr ++;
	}
	if(pStart)
	{
		_tcsncpy_s(pCommand, L, pStart, ParamsPtr - pStart);
		commands.push_back(pCommand);
	}
	delete []pCommand;

	CComObject<CPSLCmdParam> * pParam = NULL;
	for(vector<tstring>::iterator i = commands.begin();i != commands.end();i ++)
	{
		CComObject<CPSLCmdParam>::CreateInstance(&pParam);
		pParam->Initialize(i->c_str());
		m_coll.push_back(CComPtr<IPSLCmdParam>(pParam));
	}
}

////////////////////////////////////////////////////////////////////////
// Interface Implementation;
////////////////////////////////////////////////////////////////////////