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<?php
declare(strict_types=1);
/*
* This file is part of the TYPO3 CMS project.
*
* It is free software; you can redistribute it and/or modify it under
* the terms of the GNU General Public License, either version 2
* of the License, or any later version.
*
* For the full copyright and license information, please read the
* LICENSE.txt file that was distributed with this source code.
*
* The TYPO3 project - inspiring people to share!
*/
namespace TYPO3\CMS\Core\TypoScript\IncludeTree;
use TYPO3\CMS\Core\Cache\Frontend\PhpFrontend;
use TYPO3\CMS\Core\TypoScript\IncludeTree\IncludeNode\RootInclude;
use TYPO3\CMS\Core\TypoScript\IncludeTree\IncludeNode\StringInclude;
use TYPO3\CMS\Core\TypoScript\Tokenizer\TokenizerInterface;
/**
* Parse a single TypoScript string, supporting imports and conditions.
*
* This is a relatively simple "tree" builder: It gets a single TypoScript string
* snippet, tokenizes it and creates a RootInclude "tree". The string is scanned
* for imports and conditions: Those create sub includes, just like the other
* TreeBuilder classes do.
*
* @internal
*/
final class StringTreeBuilder
{
public function __construct(
private readonly TreeFromLineStreamBuilder $treeFromTokenStreamBuilder,
) {}
/**
* Create tree, ready to be traversed. Will cache if $cache is not null.
*
* @param non-empty-string $name A name used as cache identifier, [a-z,A-Z,-] only
*/
public function getTreeFromString(
string $name,
string $typoScriptString,
TokenizerInterface $tokenizer,
?PhpFrontend $cache = null,
): RootInclude {
$lowerCaseName = mb_strtolower($name);
$identifier = 'string-' . $lowerCaseName . '-' . hash('xxh3', $typoScriptString);
if ($cache) {
$includeTree = $cache->require($identifier);
if ($includeTree instanceof RootInclude) {
return $includeTree;
}
}
$includeTree = new RootInclude();
$includeNode = new StringInclude();
$includeNode->setName('[string] ' . $name);
$includeNode->setLineStream($tokenizer->tokenize($typoScriptString));
$this->treeFromTokenStreamBuilder->buildTree($includeNode, 'other', $tokenizer);
$includeTree->addChild($includeNode);
$cache?->set($identifier, $this->prepareTreeForCache($includeTree));
return $includeTree;
}
private function prepareTreeForCache(RootInclude $node): string
{
return 'return unserialize(\'' . addcslashes(serialize($node), '\'\\') . '\');';
}
}