#include ".\versioninfo.h"
#include "windows.h"

CVersionInfo::CVersionInfo(void)
{
	for( int i = 0; i < MAX_VERSION_COUNT; i++)
		m_byVer[i] = 0;
}

CVersionInfo::~CVersionInfo(void)
{

}


byte	CVersionInfo::GetVersion( int nNum )
{
	if( nNum < 0 || nNum >= MAX_VERSION_COUNT )
		return 0;

	return m_byVer[nNum];
}

void	CVersionInfo::Init()
{
	for( int i = 0; i < MAX_VERSION_COUNT; i++ )
		m_byVer[i] = 0;
}


bool	CVersionInfo::SetVersion( int nNum, byte byVer )
{
	if( nNum < 0 || nNum >= MAX_VERSION_COUNT )
		return false;

	m_byVer[nNum] = byVer;

	return true;
}

unsigned int	CVersionInfo::GetTotalVersion()
{
	unsigned int nTotalVer = 0;

	for( int i = 0; i < MAX_VERSION_COUNT; i++ )
	{
		if( i == (MAX_VERSION_COUNT - 1) )
			nTotalVer += m_byVer[i];
		else
			nTotalVer += m_byVer[i] * ( 256*( MAX_VERSION_COUNT-(i+1) ) );
	}

	return nTotalVer;
}

// 01.02.03 과 같은 문자열에서 각각의 버전을 뽑아내는 함수.
bool CVersionInfo::SetVersionFromString( char* pszVersion )
{
	if( pszVersion == NULL || (strcmp( pszVersion, "" ) == 0) )
		return false;

	Init();

	string strVersion = pszVersion;
	int nCnt = 0;

	while( strVersion.size() != 0)
	{
		if( nCnt >= MAX_VERSION_COUNT )
			break;

		int nIdx = (int)strVersion.find('.');
		if( nIdx == string::npos )
		{
			if( !strVersion.empty() )
			{
				m_byVer[nCnt] = atoi( strVersion.c_str() );
			}

			strVersion.clear();
		}
		else
		{
			string strVer = strVersion.substr( 0, nIdx );
			m_byVer[nCnt] = atoi( strVer.c_str() );
			strVersion.erase( 0, nIdx + 1);
			nCnt++;
		}
	}

	return true;
}


//현재 입력되어 있는 버전정보를 문자열 형태로 반환한다.
bool CVersionInfo::GetStringVersion( char* OUT pszVersion, int nSize )
{
	if( pszVersion == NULL )	return false;

	memset( pszVersion, 0, nSize );
	char szTemp[MAX_VERSION_CHAR_SIZE];

	for( int i = 0; i < MAX_VERSION_COUNT; i++ )
	{
		memset( szTemp, 0, MAX_VERSION_CHAR_SIZE );
		_snprintf( szTemp, MAX_VERSION_CHAR_SIZE, "%d\0", m_byVer[i] );
		if( i != (MAX_VERSION_COUNT - 1) )
			strcat( szTemp, ".\0" );

		strcat( pszVersion, szTemp );
	}

	return true;
}