/**
* Creates and returns folder for concrete file.
* @param string $filename base name of file for which must be returned folder.
* @return string folder name of the directory for the `$filename`.
* It is NOT full path to directory, only last part (folder name).
*/
public function getFileFolder($filename)
{
$rootDirectory = rtrim($this->getRootDirectory(), '\\/');
if (false === ($rootDirChilds = @scandir($rootDirectory, SCANDIR_SORT_NONE))) {
throw new InvalidConfigException("Unable to scan directory: {$rootDirectory}");
}
$rootDirChilds = array_filter($rootDirChilds, function ($dir) use($rootDirectory) {
return $dir !== '.' && $dir !== '..' && is_dir("{$rootDirectory}/{$dir}");
});
if (count($rootDirChilds) > 1) {
shuffle($rootDirChilds);
}
$fsFilename = FileSystemHelper::encodeFilename($filename);
$dir = false;
foreach ($rootDirChilds as $dir) {
switch (true) {
case FileSystemHelper::fileExists("{$rootDirectory}/{$dir}", $fsFilename, false):
// no break
// no break
case FileSystemHelper::directoryFilesCount("{$rootDirectory}/{$dir}") > $this->maxSubdirFilesCount:
$dir = false;
break;
default:
break 2;
}
}
// generate new subdir name
while ($dir === false) {
$dir = $this->generateRandomString($this->subdirsLength);
$dirpath = "{$rootDirectory}/{$dir}";
if (FileSystemHelper::fileExists($rootDirectory, $dir, false)) {
$dir = false;
} elseif (!FileSystemHelper::createDirectory($dirpath, $this->makeDirMode, false)) {
throw new InvalidConfigException("Cannot create directory: {$dirpath}");
}
}
return $dir;
}
