/**
* Invokes the command.
*
* Needs opts like: getopt("s:f:o:hd").
* Returns error codes defined as class constants.
*
* @param array $opts Command line arguments.
* @param string $baseName Teh script which invokes the command, default is 'ebnf'.
*
* @return int
*/
public static function main(array $opts, $baseName = "ebnf")
{
$debug = false;
if (isset($opts["d"])) {
$debug = true;
}
try {
$self = new Command($opts, $baseName);
return $self->execute();
} catch (SyntaxtException $e) {
echo "{$e}\n";
if ($debug) {
echo "{$e->getTraceAsString()}\n";
}
return self::EBNF_SYNTAX_ERROR;
} catch (Exception $e) {
echo "Error: {$e->getMessage()}\n";
if ($debug) {
echo "{$e->getTraceAsString()}\n";
}
return self::EBNF_FATAL_ERROR;
}
}
