filestore.php

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<?php
use Symfony\Component\HttpFoundation\File\UploadedFile;

function elgg_save_resized_image($source, $destination = null, array $params = []) {
    return _elgg_services()->imageService->resize($source, $destination, $params);
}

function elgg_delete_directory(string $directory, bool $leave_base_directory = false) {

    if (!file_exists($directory)) {
        return true;
    }

    if (!is_dir($directory)) {
        return false;
    }

    // sanity check: must be a directory
    if (!$handle = opendir($directory)) {
        return false;
    }

    // loop through all files
    while (($file = readdir($handle)) !== false) {
        if (in_array($file, ['.', '..'])) {
            continue;
        }

        $path = "$directory/$file";
        if (is_dir($path)) {
            // recurse down through directory
            if (!elgg_delete_directory($path)) {
                return false;
            }
        } else {
            // delete file
            unlink($path);
        }
    }

    // close file handler
    closedir($handle);
    
    if ($leave_base_directory) {
        return true;
    }
    
    // remove empty directory
    return rmdir($directory);
}

function elgg_get_download_url(\ElggFile $file, $use_cookie = true, $expires = '+2 hours') {
    return $file->getDownloadURL($use_cookie, $expires);
}

function elgg_get_inline_url(\ElggFile $file, $use_cookie = false, $expires = '') {
    return $file->getInlineURL($use_cookie, $expires);
}

function elgg_get_embed_url(\ElggEntity $entity, $size) {
    return elgg_generate_url('serve-icon', [
        'guid' => $entity->guid,
        'size' => $size,
    ]);
}

function elgg_get_uploaded_files($input_name) {
    return _elgg_services()->uploads->getFiles($input_name);
}

function elgg_get_uploaded_file($input_name, $check_for_validity = true) {
    return _elgg_services()->uploads->getFile($input_name, $check_for_validity);
}

function elgg_get_temp_file() {
    return new ElggTempFile();
}