238 lines
7.5 KiB
PHP
238 lines
7.5 KiB
PHP
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<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Symfony\Component\Config\Resource;
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use Symfony\Component\Finder\Finder;
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use Symfony\Component\Finder\Glob;
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/**
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* GlobResource represents a set of resources stored on the filesystem.
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*
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* Only existence/removal is tracked (not mtimes.)
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*
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* @author Nicolas Grekas <p@tchwork.com>
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*
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* @final
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*
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* @implements \IteratorAggregate<string, \SplFileInfo>
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*/
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class GlobResource implements \IteratorAggregate, SelfCheckingResourceInterface
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{
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private $prefix;
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private $pattern;
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private $recursive;
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private $hash;
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private $forExclusion;
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private $excludedPrefixes;
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private $globBrace;
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/**
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* @param string $prefix A directory prefix
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* @param string $pattern A glob pattern
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* @param bool $recursive Whether directories should be scanned recursively or not
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*
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* @throws \InvalidArgumentException
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*/
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public function __construct(string $prefix, string $pattern, bool $recursive, bool $forExclusion = false, array $excludedPrefixes = [])
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{
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ksort($excludedPrefixes);
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$this->prefix = realpath($prefix) ?: (file_exists($prefix) ? $prefix : false);
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$this->pattern = $pattern;
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$this->recursive = $recursive;
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$this->forExclusion = $forExclusion;
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$this->excludedPrefixes = $excludedPrefixes;
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$this->globBrace = \defined('GLOB_BRACE') ? \GLOB_BRACE : 0;
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if (false === $this->prefix) {
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throw new \InvalidArgumentException(sprintf('The path "%s" does not exist.', $prefix));
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}
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}
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public function getPrefix(): string
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{
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return $this->prefix;
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}
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public function __toString(): string
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{
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return 'glob.'.$this->prefix.(int) $this->recursive.$this->pattern.(int) $this->forExclusion.implode("\0", $this->excludedPrefixes);
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}
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/**
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* {@inheritdoc}
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*/
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public function isFresh(int $timestamp): bool
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{
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$hash = $this->computeHash();
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if (null === $this->hash) {
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$this->hash = $hash;
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}
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return $this->hash === $hash;
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}
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/**
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* @internal
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*/
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public function __sleep(): array
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{
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if (null === $this->hash) {
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$this->hash = $this->computeHash();
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}
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return ['prefix', 'pattern', 'recursive', 'hash', 'forExclusion', 'excludedPrefixes'];
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}
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/**
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* @internal
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*/
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public function __wakeup(): void
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{
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$this->globBrace = \defined('GLOB_BRACE') ? \GLOB_BRACE : 0;
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}
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public function getIterator(): \Traversable
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{
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if (!file_exists($this->prefix) || (!$this->recursive && '' === $this->pattern)) {
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return;
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}
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$prefix = str_replace('\\', '/', $this->prefix);
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$paths = null;
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if (!str_starts_with($this->prefix, 'phar://') && !str_contains($this->pattern, '/**/')) {
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if ($this->globBrace || !str_contains($this->pattern, '{')) {
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$paths = glob($this->prefix.$this->pattern, \GLOB_NOSORT | $this->globBrace);
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} elseif (!str_contains($this->pattern, '\\') || !preg_match('/\\\\[,{}]/', $this->pattern)) {
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foreach ($this->expandGlob($this->pattern) as $p) {
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$paths[] = glob($this->prefix.$p, \GLOB_NOSORT);
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}
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$paths = array_merge(...$paths);
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}
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}
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if (null !== $paths) {
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natsort($paths);
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foreach ($paths as $path) {
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if ($this->excludedPrefixes) {
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$normalizedPath = str_replace('\\', '/', $path);
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do {
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if (isset($this->excludedPrefixes[$dirPath = $normalizedPath])) {
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continue 2;
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}
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} while ($prefix !== $dirPath && $dirPath !== $normalizedPath = \dirname($dirPath));
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}
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if (is_file($path)) {
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yield $path => new \SplFileInfo($path);
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}
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if (!is_dir($path)) {
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continue;
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}
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if ($this->forExclusion) {
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yield $path => new \SplFileInfo($path);
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continue;
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}
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if (!$this->recursive || isset($this->excludedPrefixes[str_replace('\\', '/', $path)])) {
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continue;
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}
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$files = iterator_to_array(new \RecursiveIteratorIterator(
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new \RecursiveCallbackFilterIterator(
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new \RecursiveDirectoryIterator($path, \FilesystemIterator::SKIP_DOTS | \FilesystemIterator::FOLLOW_SYMLINKS),
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function (\SplFileInfo $file, $path) {
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return !isset($this->excludedPrefixes[str_replace('\\', '/', $path)]) && '.' !== $file->getBasename()[0];
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}
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),
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\RecursiveIteratorIterator::LEAVES_ONLY
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));
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uksort($files, 'strnatcmp');
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foreach ($files as $path => $info) {
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if ($info->isFile()) {
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yield $path => $info;
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}
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}
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}
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return;
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}
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if (!class_exists(Finder::class)) {
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throw new \LogicException(sprintf('Extended glob pattern "%s" cannot be used as the Finder component is not installed.', $this->pattern));
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}
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$finder = new Finder();
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$regex = Glob::toRegex($this->pattern);
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if ($this->recursive) {
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$regex = substr_replace($regex, '(/|$)', -2, 1);
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}
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$prefixLen = \strlen($this->prefix);
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foreach ($finder->followLinks()->sortByName()->in($this->prefix) as $path => $info) {
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$normalizedPath = str_replace('\\', '/', $path);
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if (!preg_match($regex, substr($normalizedPath, $prefixLen)) || !$info->isFile()) {
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continue;
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}
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if ($this->excludedPrefixes) {
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do {
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if (isset($this->excludedPrefixes[$dirPath = $normalizedPath])) {
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continue 2;
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}
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} while ($prefix !== $dirPath && $dirPath !== $normalizedPath = \dirname($dirPath));
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}
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yield $path => $info;
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}
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}
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private function computeHash(): string
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{
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$hash = hash_init('md5');
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foreach ($this->getIterator() as $path => $info) {
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hash_update($hash, $path."\n");
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}
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return hash_final($hash);
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}
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private function expandGlob(string $pattern): array
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{
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$segments = preg_split('/\{([^{}]*+)\}/', $pattern, -1, \PREG_SPLIT_DELIM_CAPTURE);
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$paths = [$segments[0]];
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$patterns = [];
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for ($i = 1; $i < \count($segments); $i += 2) {
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$patterns = [];
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foreach (explode(',', $segments[$i]) as $s) {
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foreach ($paths as $p) {
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$patterns[] = $p.$s.$segments[1 + $i];
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}
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}
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$paths = $patterns;
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}
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$j = 0;
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foreach ($patterns as $i => $p) {
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if (str_contains($p, '{')) {
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$p = $this->expandGlob($p);
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array_splice($paths, $i + $j, 1, $p);
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$j += \count($p) - 1;
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}
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}
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return $paths;
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}
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}
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