<?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>
*/
class GlobResource implements \IteratorAggregate, SelfCheckingResourceInterface, \Serializable
{
private $prefix;
private $pattern;
private $recursive;
private $hash;
/**
* @param string $prefix A directory prefix
* @param string $pattern A glob pattern
* @param bool $recursive Whether directories should be scanned recursively or not
*
* @throws \InvalidArgumentException
*/
public function __construct($prefix, $pattern, $recursive)
{
$this->prefix = realpath($prefix) ?: (file_exists($prefix) ? $prefix : false);
$this->pattern = $pattern;
$this->recursive = $recursive;
if (false === $this->prefix) {
throw new \InvalidArgumentException(sprintf('The path "%s" does not exist.', $prefix));
}
}
public function getPrefix()
{
return $this->prefix;
}
/**
* {@inheritdoc}
*/
public function __toString()
{
return 'glob.'.$this->prefix.$this->pattern.(int) $this->recursive;
}
/**
* {@inheritdoc}
*/
public function isFresh($timestamp)
{
$hash = $this->computeHash();
if (null === $this->hash) {
$this->hash = $hash;
}
return $this->hash === $hash;
}
/**
* @internal
*/
public function serialize()
{
if (null === $this->hash) {
$this->hash = $this->computeHash();
}
return serialize([$this->prefix, $this->pattern, $this->recursive, $this->hash]);
}
/**
* @internal
*/
public function unserialize($serialized)
{
list($this->prefix, $this->pattern, $this->recursive, $this->hash) = unserialize($serialized);
}
public function getIterator()
{
if (!file_exists($this->prefix) || (!$this->recursive && '' === $this->pattern)) {
return;
}
if (0 !== strpos($this->prefix, 'phar://') && false === strpos($this->pattern, '/**/') && (\defined('GLOB_BRACE') || false === strpos($this->pattern, '{'))) {
$paths = glob($this->prefix.$this->pattern, \GLOB_NOSORT | (\defined('GLOB_BRACE') ? \GLOB_BRACE : 0));
sort($paths);
foreach ($paths as $path) {
if ($this->recursive && is_dir($path)) {
$files = iterator_to_array(new \RecursiveIteratorIterator(
new \RecursiveCallbackFilterIterator(
new \RecursiveDirectoryIterator($path, \FilesystemIterator::SKIP_DOTS | \FilesystemIterator::FOLLOW_SYMLINKS),
function (\SplFileInfo $file) { return '.' !== $file->getBasename()[0]; }
),
\RecursiveIteratorIterator::LEAVES_ONLY
));
uasort($files, function (\SplFileInfo $a, \SplFileInfo $b) {
return (string) $a > (string) $b ? 1 : -1;
});
foreach ($files as $path => $info) {
if ($info->isFile()) {
yield $path => $info;
}
}
} elseif (is_file($path)) {
yield $path => new \SplFileInfo($path);
}
}
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));
}
$finder = new Finder();
$regex = Glob::toRegex($this->pattern);
if ($this->recursive) {
$regex = substr_replace($regex, '(/|$)', -2, 1);
}
$prefixLen = \strlen($this->prefix);
foreach ($finder->followLinks()->sortByName()->in($this->prefix) as $path => $info) {
if (preg_match($regex, substr('\\' === \DIRECTORY_SEPARATOR ? str_replace('\\', '/', $path) : $path, $prefixLen)) && $info->isFile()) {
yield $path => $info;
}
}
}
private function computeHash()
{
$hash = hash_init('md5');
foreach ($this->getIterator() as $path => $info) {
hash_update($hash, $path."\n");
}
return hash_final($hash);
}
}