<?php

declare(strict_types=1);

namespace Codeception\Util;

use RecursiveDirectoryIterator;

use RecursiveIteratorIterator;

use FilesystemIterator;

class FileSystem

{

public static function doEmptyDir(string $path): void

{

self::clearDir($path, ['.gitignore', '.gitkeep']);

}

public static function deleteDir(string $dir): bool

{

if (!file_exists($dir)) {

return true;

}

if (!is_dir($dir) || is_link($dir)) {

return @unlink($dir);

}

if (strncasecmp(PHP_OS, 'WIN', 3) === 0) {

$winPath = str_replace('/', '\\', $dir);

exec(sprintf('rd /s /q "%s"', $winPath));

return true;

}

self::clearDir($dir);

return @rmdir($dir);

}

public static function copyDir(string $src, string $dst): void

{

if (!is_dir($src)) {

return;

}

$src = rtrim($src, DIRECTORY_SEPARATOR);

@mkdir($dst, 0777, true);

$baseLen = strlen($src) + 1;

foreach (self::createIterator($src, RecursiveIteratorIterator::SELF_FIRST) as $item) {

$target = $dst . DIRECTORY_SEPARATOR . substr($item->getPathname(), $baseLen);

if ($item->isDir()) {

@mkdir($target, 0777, true);

} else {

copy($item->getPathname(), $target);

}

}

}

/**

* @param string[] $preserve

*/

private static function clearDir(string $path, array $preserve = []): void

{

foreach (self::createIterator($path, RecursiveIteratorIterator::CHILD_FIRST) as $item) {

if (in_array($item->getFilename(), $preserve, true)) {

continue;

}

$item->isDir() ? @rmdir($item->getPathname()) : @unlink($item->getPathname());

}

}

private static function createIterator(string $path, int $mode): RecursiveIteratorIterator

{

return new RecursiveIteratorIterator(

new RecursiveDirectoryIterator($path, FilesystemIterator::SKIP_DOTS),

$mode

);

}

}