#include "StdAfx.h"
#include "PathStack.h"

CPathStack::CPathStack()
{
	SetBase();
}

CPathStack::~CPathStack()
{
	MoveBase();	
}

void CPathStack::GetCurrentPathName(std::string* pstCurPathName)
{
	assert(pstCurPathName!=NULL);

	char szPathName[MAX_PATH+1];
	_getcwd(szPathName, MAX_PATH);

	*pstCurPathName = szPathName;
}

void CPathStack::Push()
{	
	char szPathName[MAX_PATH+1];
	_getcwd(szPathName, MAX_PATH);

	m_stPathNameDeque.push_front(szPathName);
}

bool CPathStack::Pop()
{
	if (m_stPathNameDeque.empty()) 
	{
		assert(!"CPathStack::Pop Empty Stack");
		return false;
	}

	_chdir(m_stPathNameDeque.front().c_str());
	m_stPathNameDeque.pop_front();
	return true;
}


void CPathStack::MoveBase()
{
	_chdir(m_stBasePathName.c_str());
}

void CPathStack::SetBase()
{
	GetCurrentPathName(&m_stBasePathName);	
}

void CPathStack::Move(const char* c_szPathName)
{
	_chdir(c_szPathName);
}