/**
* Get the real path (taking ".." and such into account)
*
* @param string $path Path to resolve
* @return string The resolved path
*/
function realpath($path)
{
$path = str_replace('/', DS, trim($path));
if (strpos($path, '..') === false) {
if (!GummFolder::isAbsolute($path)) {
$path = GummFolder::addPathElement($this->path, $path);
}
return $path;
}
$parts = explode(DS, $path);
$newparts = array();
$newpath = '';
if ($path[0] === DS) {
$newpath = DS;
}
while (($part = array_shift($parts)) !== NULL) {
if ($part === '.' || $part === '') {
continue;
}
if ($part === '..') {
if (!empty($newparts)) {
array_pop($newparts);
continue;
} else {
return false;
}
}
$newparts[] = $part;
}
$newpath .= implode(DS, $newparts);
return GummFolder::slashTerm($newpath);
}
