int SSIEngine::evalOperator( HttpSession *pSession, ExprToken * &pTok )
{
char * p1 = NULL;
int len;
int ret;
if ( !pTok )
return 0;
int type = pTok->getType();
ExprToken * pCur = pTok;
pTok = pTok->next();
switch( type )
{
case ExprToken::EXP_STRING:
return ( pCur->getStr()->len() > 0 );
case ExprToken::EXP_FMT:
{
char achBuf1[40960];
p1 = achBuf1;
len = 40960;
RequestVars::buildString( pCur->getFormat(), pSession, p1, len, 0,
pSession->getReq()->getSSIRuntime()->getRegexResult() );
return len > 0;
}
case ExprToken::EXP_REGEX:
return 0;
case ExprToken::EXP_NOT:
if ( pTok )
{
return !evalOperator( pSession, pTok );
}
else
return 1;
default:
break;
}
if (( type == ExprToken::EXP_AND )||
( type == ExprToken::EXP_OR ))
{
ret = evalOperator( pSession, pTok );
if ((( ret )&&( pTok->getType() == ExprToken::EXP_OR ))||
(( !ret )&&( pTok->getType() == ExprToken::EXP_AND )))
{
if ( pTok )
{
shortCurcuit( pTok );
}
return ret;
}
ret = evalOperator( pSession, pTok );
return ret;
}
if ( !pTok )
return 0;
return compString( pSession, type, pTok );
}
int SSIEngine::evalExpr(HttpSession *pSession, SubstItem *pItem)
{
int ret = 0;
if ((!pItem) || (pItem->getType() != REF_EXPR))
return 0;
Expression *pExpr = (Expression *)pItem->getAny();
ExprToken *pTok = pExpr->begin();
ret = evalOperator(pSession, pTok);
return ret;
}
/**
* conditional operators AND and OR
*/
bool CondParser::parseLevel1() {
bool ans = parseLevel2();
int opId = getOperatorId(m_token);
while (opId == AND || opId == OR) {
getToken();
ans = evalOperator(opId, ans, parseLevel2());
opId = getOperatorId(m_token);
}
return ans;
}