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Editing: GlobResource.php

<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Config\Resource;

use Symfony\Component\Finder\Finder;
use Symfony\Component\Finder\Glob;

/**
 * GlobResource represents a set of resources stored on the filesystem.
 *
 * Only existence/removal is tracked (not mtimes.)
 *
 * @author Nicolas Grekas <p@tchwork.com>
 *
 * @final
 *
 * @implements \IteratorAggregate<string, \SplFileInfo>
 */
class GlobResource implements \IteratorAggregate, SelfCheckingResourceInterface
{
    private $prefix;
    private $pattern;
    private $recursive;
    private $hash;
    private $forExclusion;
    private $excludedPrefixes;
    private $globBrace;

/**
     * @param string $prefix    A directory prefix
     * @param string $pattern   A glob pattern
     * @param bool   $recursive Whether directories should be scanned recursively or not
     *
     * @throws \InvalidArgumentException
     */
    public function __construct(string $prefix, string $pattern, bool $recursive, bool $forExclusion = false, array $excludedPrefixes = [])
    {
        ksort($excludedPrefixes);
        $this->prefix = realpath($prefix) ?: (file_exists($prefix) ? $prefix : false);
        $this->pattern = $pattern;
        $this->recursive = $recursive;
        $this->forExclusion = $forExclusion;
        $this->excludedPrefixes = $excludedPrefixes;
        $this->globBrace = \defined('GLOB_BRACE') ? \GLOB_BRACE : 0;

if (false === $this->prefix) {
            throw new \InvalidArgumentException(sprintf('The path "%s" does not exist.', $prefix));
        }
    }

public function getPrefix(): string
    {
        return $this->prefix;
    }

public function __toString(): string
    {
        return 'glob.'.$this->prefix.(int) $this->recursive.$this->pattern.(int) $this->forExclusion.implode("\0", $this->excludedPrefixes);
    }

/**
     * {@inheritdoc}
     */
    public function isFresh(int $timestamp): bool
    {
        $hash = $this->computeHash();

if (null === $this->hash) {
            $this->hash = $hash;
        }

return $this->hash === $hash;
    }

/**
     * @internal
     */
    public function __sleep(): array
    {
        if (null === $this->hash) {
            $this->hash = $this->computeHash();
        }

return ['prefix', 'pattern', 'recursive', 'hash', 'forExclusion', 'excludedPrefixes'];
    }

/**
     * @internal
     */
    public function __wakeup(): void
    {
        $this->globBrace = \defined('GLOB_BRACE') ? \GLOB_BRACE : 0;
    }

public function getIterator(): \Traversable
    {
        if (!file_exists($this->prefix) || (!$this->recursive && '' === $this->pattern)) {
            return;
        }
        $prefix = str_replace('\\', '/', $this->prefix);
        $paths = null;

if ('' === $this->pattern && is_file($prefix)) {
            $paths = [$this->prefix];
        } elseif (!str_starts_with($this->prefix, 'phar://') && !str_contains($this->pattern, '/**/')) {
            if ($this->globBrace || !str_contains($this->pattern, '{')) {
                $paths = glob($this->prefix.$this->pattern, \GLOB_NOSORT | $this->globBrace);
            } elseif (!str_contains($this->pattern, '\\') || !preg_match('/\\\\[,{}]/', $this->pattern)) {
                foreach ($this->expandGlob($this->pattern) as $p) {
                    $paths[] = glob($this->prefix.$p, \GLOB_NOSORT);
                }
                $paths = array_merge(...$paths);
            }
        }

if (null !== $paths) {
            natsort($paths);
            foreach ($paths as $path) {
                if ($this->excludedPrefixes) {
                    $normalizedPath = str_replace('\\', '/', $path);
                    do {
                        if (isset($this->excludedPrefixes[$dirPath = $normalizedPath])) {
                            continue 2;
                        }
                    } while ($prefix !== $dirPath && $dirPath !== $normalizedPath = \dirname($dirPath));
                }

if (is_file($path)) {
                    yield $path => new \SplFileInfo($path);
                }
                if (!is_dir($path)) {
                    continue;
                }
                if ($this->forExclusion) {
                    yield $path => new \SplFileInfo($path);
                    continue;
                }
                if (!$this->recursive || isset($this->excludedPrefixes[str_replace('\\', '/', $path)])) {
                    continue;
                }
                $files = iterator_to_array(new \RecursiveIteratorIterator(
                    new \RecursiveCallbackFilterIterator(
                        new \RecursiveDirectoryIterator($path, \FilesystemIterator::SKIP_DOTS | \FilesystemIterator::FOLLOW_SYMLINKS),
                        function (\SplFileInfo $file, $path) {
                            return !isset($this->excludedPrefixes[str_replace('\\', '/', $path)]) && '.' !== $file->getBasename()[0];
                        }
                    ),
                    \RecursiveIteratorIterator::LEAVES_ONLY
                ));
                uksort($files, 'strnatcmp');

foreach ($files as $path => $info) {
                    if ($info->isFile()) {
                        yield $path => $info;
                    }
                }
            }

return;
        }

if (!class_exists(Finder::class)) {
            throw new \LogicException(sprintf('Extended glob pattern "%s" cannot be used as the Finder component is not installed.', $this->pattern));
        }

if (is_file($prefix = $this->prefix)) {
            $prefix = \dirname($prefix);
            $pattern = basename($prefix).$this->pattern;
        } else {
            $pattern = $this->pattern;
        }

$finder = new Finder();
        $regex = Glob::toRegex($pattern);
        if ($this->recursive) {
            $regex = substr_replace($regex, '(/|$)', -2, 1);
        }

$prefixLen = \strlen($prefix);
        foreach ($finder->followLinks()->sortByName()->in($prefix) as $path => $info) {
            $normalizedPath = str_replace('\\', '/', $path);
            if (!preg_match($regex, substr($normalizedPath, $prefixLen)) || !$info->isFile()) {
                continue;
            }
            if ($this->excludedPrefixes) {
                do {
                    if (isset($this->excludedPrefixes[$dirPath = $normalizedPath])) {
                        continue 2;
                    }
                } while ($prefix !== $dirPath && $dirPath !== $normalizedPath = \dirname($dirPath));
            }

yield $path => $info;
        }
    }

private function computeHash(): string
    {
        $hash = hash_init('md5');

foreach ($this->getIterator() as $path => $info) {
            hash_update($hash, $path."\n");
        }

return hash_final($hash);
    }

private function expandGlob(string $pattern): array
    {
        $segments = preg_split('/\{([^{}]*+)\}/', $pattern, -1, \PREG_SPLIT_DELIM_CAPTURE);
        $paths = [$segments[0]];
        $patterns = [];

for ($i = 1; $i < \count($segments); $i += 2) {
            $patterns = [];

foreach (explode(',', $segments[$i]) as $s) {
                foreach ($paths as $p) {
                    $patterns[] = $p.$s.$segments[1 + $i];
                }
            }

$paths = $patterns;
        }

$j = 0;
        foreach ($patterns as $i => $p) {
            if (str_contains($p, '{')) {
                $p = $this->expandGlob($p);
                array_splice($paths, $i + $j, 1, $p);
                $j += \count($p) - 1;
            }
        }

return $paths;
    }
}

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