170 lines
5.0 KiB
PHP
170 lines
5.0 KiB
PHP
<?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\Cache\Traits;
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use Symfony\Component\Cache\Adapter\AdapterInterface;
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use Symfony\Component\Cache\CacheItem;
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use Symfony\Component\Cache\Exception\InvalidArgumentException;
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use Symfony\Component\VarExporter\VarExporter;
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/**
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* @author Titouan Galopin <galopintitouan@gmail.com>
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* @author Nicolas Grekas <p@tchwork.com>
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*
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* @internal
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*/
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trait PhpArrayTrait
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{
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use ProxyTrait;
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private $file;
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private $keys;
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private $values;
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private static $valuesCache = [];
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/**
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* Store an array of cached values.
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*
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* @param array $values The cached values
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*/
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public function warmUp(array $values)
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{
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if (file_exists($this->file)) {
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if (!is_file($this->file)) {
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throw new InvalidArgumentException(sprintf('Cache path exists and is not a file: "%s".', $this->file));
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}
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if (!is_writable($this->file)) {
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throw new InvalidArgumentException(sprintf('Cache file is not writable: "%s".', $this->file));
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}
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} else {
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$directory = \dirname($this->file);
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if (!is_dir($directory) && !@mkdir($directory, 0777, true)) {
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throw new InvalidArgumentException(sprintf('Cache directory does not exist and cannot be created: "%s".', $directory));
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}
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if (!is_writable($directory)) {
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throw new InvalidArgumentException(sprintf('Cache directory is not writable: "%s".', $directory));
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}
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}
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$dumpedValues = '';
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$dumpedMap = [];
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$dump = <<<'EOF'
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<?php
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// This file has been auto-generated by the Symfony Cache Component.
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return [[
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EOF;
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foreach ($values as $key => $value) {
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CacheItem::validateKey(\is_int($key) ? (string) $key : $key);
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$isStaticValue = true;
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if (null === $value) {
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$value = "'N;'";
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} elseif (\is_object($value) || \is_array($value)) {
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try {
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$value = VarExporter::export($value, $isStaticValue);
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} catch (\Exception $e) {
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throw new InvalidArgumentException(sprintf('Cache key "%s" has non-serializable "%s" value.', $key, \is_object($value) ? \get_class($value) : 'array'), 0, $e);
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}
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} elseif (\is_string($value)) {
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// Wrap "N;" in a closure to not confuse it with an encoded `null`
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if ('N;' === $value) {
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$isStaticValue = false;
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}
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$value = var_export($value, true);
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} elseif (!is_scalar($value)) {
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throw new InvalidArgumentException(sprintf('Cache key "%s" has non-serializable "%s" value.', $key, \gettype($value)));
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} else {
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$value = var_export($value, true);
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}
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if (!$isStaticValue) {
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$value = str_replace("\n", "\n ", $value);
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$value = "static function () {\n return {$value};\n}";
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}
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$hash = hash('md5', $value);
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if (null === $id = $dumpedMap[$hash] ?? null) {
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$id = $dumpedMap[$hash] = \count($dumpedMap);
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$dumpedValues .= "{$id} => {$value},\n";
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}
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$dump .= var_export($key, true)." => {$id},\n";
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}
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$dump .= "\n], [\n\n{$dumpedValues}\n]];\n";
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$tmpFile = uniqid($this->file, true);
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file_put_contents($tmpFile, $dump);
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@chmod($tmpFile, 0666 & ~umask());
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unset($serialized, $value, $dump);
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@rename($tmpFile, $this->file);
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unset(self::$valuesCache[$this->file]);
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$this->initialize();
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}
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/**
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* {@inheritdoc}
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*
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* @param string $prefix
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*
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* @return bool
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*/
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public function clear(/*string $prefix = ''*/)
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{
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$prefix = 0 < \func_num_args() ? (string) func_get_arg(0) : '';
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$this->keys = $this->values = [];
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$cleared = @unlink($this->file) || !file_exists($this->file);
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unset(self::$valuesCache[$this->file]);
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if ($this->pool instanceof AdapterInterface) {
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return $this->pool->clear($prefix) && $cleared;
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}
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return $this->pool->clear() && $cleared;
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}
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/**
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* Load the cache file.
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*/
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private function initialize()
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{
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if (isset(self::$valuesCache[$this->file])) {
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$values = self::$valuesCache[$this->file];
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} elseif (!file_exists($this->file)) {
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$this->keys = $this->values = [];
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return;
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} else {
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$values = self::$valuesCache[$this->file] = (include $this->file) ?: [[], []];
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}
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if (2 !== \count($values) || !isset($values[0], $values[1])) {
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$this->keys = $this->values = [];
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} else {
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[$this->keys, $this->values] = $values;
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}
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}
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}
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