/**
* Find the available service with highest priority
*
* @param string Service type
* @param string Service sub type
* @param mixed Service keys that should be excluded in the search for a service. Array or comma list.
* @return mixed Service info array if a service was found, FLASE otherwise
* @author Rene Fritz <*****@*****.**>
*/
public static function findService($serviceType, $serviceSubType = '', $excludeServiceKeys = array())
{
global $T3_SERVICES, $TYPO3_CONF_VARS;
$serviceKey = FALSE;
$serviceInfo = FALSE;
$priority = 0;
$quality = 0;
if (!is_array($excludeServiceKeys)) {
$excludeServiceKeys = t3lib_div::trimExplode(',', $excludeServiceKeys, 1);
}
if (is_array($T3_SERVICES[$serviceType])) {
foreach ($T3_SERVICES[$serviceType] as $key => $info) {
if (in_array($key, $excludeServiceKeys)) {
continue;
}
// select a subtype randomly
// usefull to start a service by service key without knowing his subtypes - for testing purposes
if ($serviceSubType == '*') {
$serviceSubType = key($info['serviceSubTypes']);
}
// this matches empty subtype too
if ($info['available'] && ($info['subtype'] == $serviceSubType || $info['serviceSubTypes'][$serviceSubType]) && $info['priority'] >= $priority) {
// has a lower quality than the already found, therefore we skip this service
if ($info['priority'] == $priority && $info['quality'] < $quality) {
continue;
}
// service depends on external programs - check if they exists
if (trim($info['exec'])) {
$executables = t3lib_div::trimExplode(',', $info['exec'], 1);
foreach ($executables as $executable) {
if (!t3lib_exec::checkCommand($executable)) {
self::deactivateService($serviceType, $key);
$info['available'] = FALSE;
break;
}
}
}
// still available after exec check?
if ($info['available']) {
$serviceKey = $key;
$priority = $info['priority'];
$quality = $info['quality'];
}
}
}
}
if ($serviceKey) {
$serviceInfo = $T3_SERVICES[$serviceType][$serviceKey];
}
return $serviceInfo;
}
/**
* check the availability of external programs
*
* @param string comma list of programs 'perl,python,pdftotext'
* @return boolean return FALSE if one program was not found
*/
function checkExec($progList)
{
$ret = TRUE;
$progList = t3lib_div::trimExplode(',', $progList, 1);
foreach ($progList as $prog) {
if (!t3lib_exec::checkCommand($prog)) {
// program not found
$this->errorPush('External program not found: ' . $prog, T3_ERR_SV_PROG_NOT_FOUND);
$ret = FALSE;
}
}
return $ret;
}