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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\Database\Schema;
use Psr\EventDispatcher\EventDispatcherInterface;
use TYPO3\CMS\Core\Database\Event\AlterTableDefinitionStatementsEvent;
use TYPO3\CMS\Core\Package\PackageManager;
/**
* Helper methods to handle raw SQL input and transform it into individual statements
* for further processing.
*
* @internal
*/
class SqlReader
{
/**
* @var EventDispatcherInterface
*/
protected $eventDispatcher;
/**
* @var PackageManager
*/
protected $packageManager;
/**
* @throws \InvalidArgumentException
*/
public function __construct(EventDispatcherInterface $eventDispatcher, PackageManager $packageManager)
{
$this->eventDispatcher = $eventDispatcher;
$this->packageManager = $packageManager;
}
/**
* Cycle through all loaded extensions and get full table definitions as concatenated string
*
* @param bool $withStatic TRUE if sql from ext_tables_static+adt.sql should be loaded, too.
* @return string Concatenated SQL of loaded extensions ext_tables.sql
*/
public function getTablesDefinitionString(bool $withStatic = false): string
{
$sqlString = [];
// Find all ext_tables.sql of loaded extensions
foreach ($this->packageManager->getActivePackages() as $package) {
$packagePath = $package->getPackagePath();
if (@file_exists($packagePath . 'ext_tables.sql')) {
$sqlString[] = (string)file_get_contents($packagePath . 'ext_tables.sql');
}
if ($withStatic && @file_exists($packagePath . 'ext_tables_static+adt.sql')) {
$sqlString[] = (string)file_get_contents($packagePath . 'ext_tables_static+adt.sql');
}
}
$event = $this->eventDispatcher->dispatch(new AlterTableDefinitionStatementsEvent($sqlString));
$sqlString = $event->getSqlData();
return implode(LF . LF, $sqlString);
}
/**
* Returns an array where every entry is a single SQL-statement.
* Input must be formatted like an ordinary MySQL dump file. Every statements needs to be terminated by a ';'
* and there may only be one statement (or partial statement) per line.
*
* @param string $dumpContent The SQL dump content.
* @param string $queryRegex Regex to select which statements to return.
* @return array Array of SQL statements
*/
public function getStatementArray(string $dumpContent, string $queryRegex = null): array
{
$statementArray = [];
$statementArrayPointer = 0;
$isInMultilineComment = false;
foreach (explode(LF, $dumpContent) as $lineContent) {
$lineContent = trim($lineContent);
// Skip empty lines and comments
if ($lineContent === ''
|| $lineContent[0] === '#'
|| str_starts_with($lineContent, '--')
|| str_starts_with($lineContent, '/*')
|| str_ends_with($lineContent, '*/')
|| $isInMultilineComment
) {
// skip c style multiline comments
if (str_starts_with($lineContent, '/*') && !str_ends_with($lineContent, '*/')) {
$isInMultilineComment = true;
}
if (str_ends_with($lineContent, '*/')) {
$isInMultilineComment = false;
}
continue;
}
$statementArray[$statementArrayPointer] = ($statementArray[$statementArrayPointer] ?? '') . $lineContent;
if (str_ends_with($lineContent, ';')) {
$statement = trim($statementArray[$statementArrayPointer]);
if (!$statement || ($queryRegex && !preg_match('/' . $queryRegex . '/i', $statement))) {
unset($statementArray[$statementArrayPointer]);
}
$statementArrayPointer++;
} else {
$statementArray[$statementArrayPointer] .= ' ';
}
}
return $statementArray;
}
/**
* Extract only INSERT statements from SQL dump
*/
public function getInsertStatementArray(string $dumpContent): array
{
return $this->getStatementArray($dumpContent, '^INSERT');
}
/**
* Extract only CREATE TABLE statements from SQL dump
*/
public function getCreateTableStatementArray(string $dumpContent): array
{
return $this->getStatementArray($dumpContent, '^CREATE TABLE');
}
}