/**
* Prune the backup files down to keepNFiles. If $keepNFiles = -1 then don't
* do anything
*
* @param <type> $path
* @param <type> $stemName
* @param <type> $keepNFiles
*/
public static function pruneFiles($path, $stemName, $keepNFiles, &$output)
{
$outcome = true;
if ($keepNFiles == -1) {
$output = 'No files pruned because keepNFiles parameter is -1';
} else {
$searchPath = uFs::mp(array($path, $stemName));
$options = array('sort-by' => 'date', 'sort-order' => 'DESC');
$fileList = self::getListOfFiles($searchPath, $options, true);
if (count($fileList) > $keepNFiles) {
array_splice($fileList, 0, $keepNFiles);
foreach ($fileList as $fileName) {
uFs::unlink($fileName, true);
}
}
}
return $outcome;
}
public static function symlink($target, $linkName, $throwException = true)
{
if (function_exists('symlink')) {
if (is_link($linkName)) {
if (readlink($linkName) != $target) {
uFs::unlink($linkName, false);
}
}
if (!self::relativeSymlink($target, $linkName)) {
if ($throwException) {
throw new Exception('symlink(' . $target . ',' . $linkName . ') failed.');
} else {
return false;
}
}
} else {
if ($throwException) {
throw new Exception('Function \'symlink\' does not exist.');
} else {
return false;
}
}
}
public function __destruct()
{
uFs::unlink($this->fullPath);
}
