Viewing file:  PhpArrayTrait.php (4.41 KB) -rw-r--r--
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<?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\Cache\Traits;
use Symfony\Component\Cache\CacheItem;
use Symfony\Component\Cache\Exception\InvalidArgumentException;
use Symfony\Component\VarExporter\VarExporter;
/**
* @author Titouan Galopin <galopintitouan@gmail.com>
* @author Nicolas Grekas <p@tchwork.com>
*
* @internal
*/
trait PhpArrayTrait
{
use ProxyTrait;
private $file;
private $keys;
private $values;
/**
* Store an array of cached values.
*
* @param array $values The cached values
*/
public function warmUp(array $values)
{
if (file_exists($this->file)) {
if (!is_file($this->file)) {
throw new InvalidArgumentException(sprintf('Cache path exists and is not a file: %s.', $this->file));
}
if (!is_writable($this->file)) {
throw new InvalidArgumentException(sprintf('Cache file is not writable: %s.', $this->file));
}
} else {
$directory = \dirname($this->file);
if (!is_dir($directory) && !@mkdir($directory, 0777, true)) {
throw new InvalidArgumentException(sprintf('Cache directory does not exist and cannot be created: %s.', $directory));
}
if (!is_writable($directory)) {
throw new InvalidArgumentException(sprintf('Cache directory is not writable: %s.', $directory));
}
}
$dumpedValues = '';
$dumpedMap = [];
$dump = <<<'EOF'
<?php
// This file has been auto-generated by the Symfony Cache Component.
return [[
EOF;
foreach ($values as $key => $value) {
CacheItem::validateKey(\is_int($key) ? (string) $key : $key);
$isStaticValue = true;
if (null === $value) {
$value = "'N;'";
} elseif (\is_object($value) || \is_array($value)) {
try {
$value = VarExporter::export($value, $isStaticValue);
} catch (\Exception $e) {
throw new InvalidArgumentException(sprintf('Cache key "%s" has non-serializable %s value.', $key, \is_object($value) ? \get_class($value) : 'array'), 0, $e);
}
} elseif (\is_string($value)) {
// Wrap "N;" in a closure to not confuse it with an encoded `null`
if ('N;' === $value) {
$isStaticValue = false;
}
$value = var_export($value, true);
} elseif (!is_scalar($value)) {
throw new InvalidArgumentException(sprintf('Cache key "%s" has non-serializable %s value.', $key, \gettype($value)));
} else {
$value = var_export($value, true);
}
if (!$isStaticValue) {
$value = str_replace("\n", "\n ", $value);
$value = "static function () {\n return {$value};\n}";
}
$hash = hash('md5', $value);
if (null === $id = $dumpedMap[$hash] ?? null) {
$id = $dumpedMap[$hash] = \count($dumpedMap);
$dumpedValues .= "{$id} => {$value},\n";
}
$dump .= var_export($key, true)." => {$id},\n";
}
$dump .= "\n], [\n\n{$dumpedValues}\n]];\n";
$tmpFile = uniqid($this->file, true);
file_put_contents($tmpFile, $dump);
@chmod($tmpFile, 0666 & ~umask());
unset($serialized, $value, $dump);
@rename($tmpFile, $this->file);
$this->initialize();
}
/**
* {@inheritdoc}
*/
public function clear()
{
$this->keys = $this->values = [];
$cleared = @unlink($this->file) || !file_exists($this->file);
return $this->pool->clear() && $cleared;
}
/**
* Load the cache file.
*/
private function initialize()
{
if (!file_exists($this->file)) {
$this->keys = $this->values = [];
return;
}
$values = (include $this->file) ?: [[], []];
if (2 !== \count($values) || !isset($values[0], $values[1])) {
$this->keys = $this->values = [];
} else {
list($this->keys, $this->values) = $values;
}
}
}
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