protected function parseArgument($args, $argIndex, $startFrom, DefinedSwitch $switch, $switchSeen)
{
// initialise the return value
$arg = null;
// is the argument optional or required?
if ($switch->testHasOptionalArgument()) {
// it is optional ... but is
// it there?
if (isset($args[$argIndex])) {
// yes it is
$arg = substr($args[$argIndex], $startFrom);
} else {
$arg = $switch->arg->defaultValue;
$argIndex--;
}
} else {
// argument is required ... but
// is it there?
if (!isset($args[$argIndex])) {
// no it is not
// error!
throw new \Exception('switch ' . $switchSeen . ' expected argument');
}
// yes it is
$arg = substr($args[$argIndex], $startFrom);
// did we get an argument?
if (strlen(trim($arg)) == 0) {
// no, we did not
throw new \Exception('switch ' . $switchSeen . ' expected argument');
}
}
return array($arg, $argIndex);
}
