/**
* @param ... $values
* @return mixed
*/
function tuple_max($values)
{
$args = array_filter_key(func_get_args(), not_dg(eq_dg(tuple_get(), return_dg(null))));
$argsCount = count($args);
if ($argsCount < 1) {
$ret = null;
} elseif ($argsCount === 1) {
$ret = array_shift($args);
} else {
$ret = call_user_func_array('max', $args);
}
return $ret;
}
/**
* @param callable $iterator
* @return callable
*/
function array_filter_key_dg($iterator)
{
return function ($array) use($iterator) {
return array_filter_key($array, $iterator);
};
}
/**
* @param array $list
* @param callable $filter
* @return array
*/
function list_filter_key($list, $filter)
{
return array_values(array_filter_key($list, $filter));
}
/**
* @param object $config
* @param callable $callable
* @return object
*/
function object_filter_val($config, $callable)
{
return (object) array_filter_key((array) $config, function () use($callable) {
return call_user_func_array($callable, func_get_args());
});
}
/**
* @param string $name
* @param mixed $value
* @return string
*/
function mime_header_entry_map($value, $name)
{
if (debug_assert(is_string($name), "Invalid parameters ")) {
switch ($name) {
case 'Content-Type':
arrayize($value);
$value = mime_header_contenttype_map($value[0], array_filter_key($value, tuple_get(1, 'is_string')));
break;
case 'Content-Disposition':
$value['name'] = mime_header_encode($value['name']);
$value = mime_header_contenttype_map($value[0], array_filter_key($value, tuple_get(1, 'is_string')));
break;
default:
$dump = var_dump_human_compact($value);
debug_enforce(is_string($value), "Could not map '{$name}'=>'{$dump}'");
break;
}
return "{$name}: {$value}\r\n";
} else {
return '';
}
}
/**
* @override
* @return array
*/
public function getColumns()
{
$alias = $this->getAlias();
$fields = $this->getSelect()->getFields();
$fieldsSet = array_filter_key($fields, function () {
$isSet = func_get_arg(0);
return $isSet;
});
$ret = array_map_val($fieldsSet, function () use($alias) {
$name = func_get_arg(1);
return array($alias, $name, null);
});
return $ret;
}
