static bool perl_kvs_cmd_begin(KviKvsModuleCommandCall * c)
{
// This command is somewhat special in the fact that has a dedicated
// parsing routine in the KVS core parser.
// The parser sets the perl code as the first parameter of our call,
// the remaining params are the context name and the arguments
QString szCode,szContext;
KviKvsVariantList vList;
KVSM_PARAMETERS_BEGIN(c)
KVSM_PARAMETER("code",KVS_PT_STRING,0,szCode)
KVSM_PARAMETER("context",KVS_PT_STRING,KVS_PF_OPTIONAL,szContext)
KVSM_PARAMETER("args",KVS_PT_VARIANTLIST,KVS_PF_OPTIONAL,vList)
KVSM_PARAMETERS_END(c)
KVS_CHECK_MODULE_STATE(m,c)
#ifdef COMPILE_PERL_SUPPORT
KviPerlCoreCtrlCommand_execute ex;
ex.uSize = sizeof(KviPerlCoreCtrlCommand_execute);
ex.pKvsContext = c->context();
ex.szContext = szContext;
ex.szCode = szCode;
for(KviKvsVariant * v = vList.first();v;v = vList.next())
{
QString tmp;
v->asString(tmp);
ex.lArgs.append(tmp);
}
ex.bQuiet = c->switches()->find('q',"quiet");
if(!g_pPerlCoreModule->ctrl(KVI_PERLCORECTRLCOMMAND_EXECUTE,&ex))
{
if(!c->switches()->find('q',"quiet"))
c->warning(__tr2qs_ctx("The perlcore module failed to execute the code: something is wrong with the perl support","perl"));
return true;
}
if(!ex.lWarnings.isEmpty())
{
for(QStringList::Iterator it = ex.lWarnings.begin();it != ex.lWarnings.end();++it)
c->warning(*it);
}
if(!ex.bExitOk)
{
if(!c->switches()->find('q',"quiet"))
{
if(c->switches()->find('f',"fail-on-error"))
{
c->warning(__tr2qs_ctx("Perl execution error:","perl"));
c->warning(ex.szError);
return false;
} else {
c->warning(__tr2qs_ctx("Perl execution error:","perl"));
c->error(ex.szError);
}
}
}
if(!c->switches()->find('n',"no-return"))
c->context()->returnValue()->setString(ex.szRetVal);
#endif //COMPILE_PERL_SUPPORT
return true;
}
bool KviKvsTreeNodeSpecialCommandForeach::execute(KviKvsRunTimeContext * c)
{
KviKvsVariantList l;
l.setAutoDelete(true);
if(!m_pIterationData->evaluate(c,&l))
return false;
KviKvsSwitchList swl;
if(m_pSwitches)
{
if(!(m_pSwitches->evaluate(c,&swl)))
return false;
}
bool bIncludeEmptyScalars = swl.find('a',"all") != 0;
for(KviKvsVariant * pArg = l.first(); pArg; pArg = l.next())
{
switch(pArg->type())
{
case KviKvsVariantData::Array:
{
unsigned int uCnt = pArg->array()->size();
unsigned int idx = 0;
while(idx < uCnt)
{
// we evaluate this each time (as it may actually be killed at each iteration)
// FIXME: maybe some kind of reference counting or a observer pattern might be a bit more efficient here
// (but might be far less efficient everywhere else...)
KviKvsRWEvaluationResult * v = m_pIterationVariable->evaluateReadWrite(c);
if(!v)
return false;
KviKvsVariant * pOne = pArg->array()->at(idx);
if(pOne)
{
if(bIncludeEmptyScalars || (!pOne->isEmpty()))
{
v->result()->copyFrom(*pOne);
} else {
delete v; // we're done with it for this iteration
idx++;
continue;
}
} else {
if(bIncludeEmptyScalars)
{
v->result()->setNothing();
} else {
delete v; // we're done with it for this iteration
idx++;
continue;
}
}
delete v; // we're done with it for this iteration
if(!m_pLoop->execute(c))
{
if(c->error())
return false;
// break allowed!
if(c->breakPending())
{
c->handleBreak();
return true;
}
if(c->continuePending())
{
c->handleContinue();
idx++;
continue;
}
return false; // propagate the false return value
}
idx++;
}
}
break;
case KviKvsVariantData::Hash:
{
KviKvsHashIterator it(*(pArg->hash()->dict()));
while(KviKvsVariant * pOne = it.current())
{
// we evaluate this each time (as it may actually be killed at each iteration)
// FIXME: maybe some kind of reference counting or a observer pattern might be a bit more efficient here
// (but might be far less efficient everywhere else...)
KviKvsRWEvaluationResult * v = m_pIterationVariable->evaluateReadWrite(c);
if(!v)
return false;
if(bIncludeEmptyScalars || (!pOne->isEmpty()))
{
v->result()->copyFrom(*pOne);
} else {
delete v; // we're done with it for this iteration
++it;
continue;
}
delete v; // we're done with it for this iteration
if(!m_pLoop->execute(c))
{
if(c->error())
return false;
// break allowed!
if(c->breakPending())
{
c->handleBreak();
return true;
}
if(c->continuePending())
{
c->handleContinue();
++it;
continue;
}
return false; // propagate the false return value
}
++it;
}
}
break;
default:
if(bIncludeEmptyScalars || (!pArg->isEqualToNothing()))
{
// we evaluate this each time (as it may actually be killed at each iteration)
// FIXME: maybe some kind of reference counting or a observer pattern might be a bit more efficient here
// (but might be far less efficient everywhere else...)
KviKvsRWEvaluationResult * v = m_pIterationVariable->evaluateReadWrite(c);
if(!v)
return false;
v->result()->copyFrom(*pArg);
delete v; // we're done with it for this iteration
if(!m_pLoop->execute(c))
{
if(c->error())
return false;
// break allowed!
if(c->breakPending())
{
c->handleBreak();
return true;
}
if(c->continuePending())
{
c->handleContinue();
continue;
}
return false; // propagate the false return value
}
}
break;
}
}
return true;
}
bool KviKvsTreeNodeSpecialCommandClass::execute(KviKvsRunTimeContext * c)
{
KviKvsVariantList l;
if(!m_pParams->evaluate(c,&l))return false;
KviKvsVariant * pClassName = l.first();
if(!pClassName)
{
c->error(this,__tr2qs_ctx("Missing class name","kvs"));
return false;
}
KviKvsVariant * pBaseClassName = l.next();
QString szClassName;
QString szBaseClassName;
pClassName->asString(szClassName);
QRegExp re("[\\w:]+");
if(!re.exactMatch(szClassName))
{
c->error(this,__tr2qs_ctx("Class names can contain only letters, digits, underscores and '::' namespace separators","kvs"));
return false;
}
if(pBaseClassName)
pBaseClassName->asString(szBaseClassName);
if(szClassName.isEmpty())
{
c->error(this,__tr2qs_ctx("Missing class name","kvs"));
return false;
}
if(szBaseClassName.isEmpty())szBaseClassName = "object";
// avoid infinite recursion in loading the base class
if(KviQString::equalCI(szBaseClassName,szClassName))
{
c->error(__tr2qs_ctx("A class can't be a subclass of itself","kvs"));
return false;
}
KviKvsObjectClass * pBaseClass = KviKvsKernel::instance()->objectController()->lookupClass(szBaseClassName);
if(!pBaseClass)
{
c->error(this,__tr2qs_ctx("Couln't find base class named '%Q'","kvs"),&szBaseClassName);
return false;
}
// walk the inheritance tree of the base class in order to detect loops
KviKvsObjectClass * pClass = pBaseClass;
while(pClass)
{
if(KviQString::equalCI(pClass->name(),szClassName))
{
c->error(this,__tr2qs_ctx("Detected a loop in the inheritance tree of the base class '%Q': redefine that class first","kvs"),&szBaseClassName);
return false;
}
pClass = pClass->parentClass();
}
KviKvsObjectClass * pActualClass = KviKvsKernel::instance()->objectController()->lookupClass(szClassName,true);
if(pActualClass)
{
c->error(this,__tr2qs_ctx("Can't override the builtin class '%Q'","kvs"),&szClassName);
return false;
}
pActualClass = new KviKvsObjectClass(pBaseClass,szClassName,0,false);
for(KviKvsTreeNodeSpecialCommandClassFunctionDefinition * d = m_pFunctions->first();d;d = m_pFunctions->next())
{
pActualClass->registerFunctionHandler(d->name(),d->buffer(),d->reminder(),d->handlerFlags());
}
return true;
}
