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<?php
/*
* 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\Core;
use TYPO3\CMS\Core\Exception;
/**
* The TYPO3 Context object.
*
* A TYPO3 Application context is something like "Production", "Development",
* "Production/StagingSystem", and is set using the TYPO3_CONTEXT environment variable.
*
* A context can contain arbitrary sub-contexts, which are delimited with slash
* ("Production/StagingSystem", "Production/Staging/Server1"). The top-level
* contexts, however, must be one of "Testing", "Development" and "Production".
*
* Mainly, you will use $context->isProduction(), $context->isTesting() and
* $context->isDevelopment() inside your custom code.
*
* ATTENTION: The Testing context is only used internally when executing TYPO3 Core tests. It must not be used otherwise.
*
* This class is derived from the TYPO3 Flow framework.
* Credits go to the respective authors.
*/
class ApplicationContext
{
/**
* The (internal) context string; could be something like "Development" or "Development/MyLocalMacBook"
*
* @var string
*/
protected $contextString;
/**
* The root context; must be one of "Development", "Testing" or "Production"
*
* @var string
*/
protected $rootContextString;
/**
* The parent context, or NULL if there is no parent context
*
* @var \TYPO3\CMS\Core\Core\ApplicationContext|null
*/
protected $parentContext;
/**
* Initialize the context object.
*
* @param string $contextString
* @throws Exception if the parent context is none of "Development", "Production" or "Testing"
*/
public function __construct($contextString)
{
if (!str_contains($contextString, '/')) {
$this->rootContextString = $contextString;
$this->parentContext = null;
} else {
$contextStringParts = explode('/', $contextString);
$this->rootContextString = $contextStringParts[0];
array_pop($contextStringParts);
$this->parentContext = new self(implode('/', $contextStringParts));
}
if (!in_array($this->rootContextString, ['Development', 'Production', 'Testing'], true)) {
throw new Exception('The given context "' . $contextString . '" was not valid. Only allowed are Development, Production and Testing, including their sub-contexts', 1335436551);
}
$this->contextString = $contextString;
}
/**
* Returns the full context string, for example "Development", or "Production/LiveSystem"
*
* @return string
*/
public function __toString()
{
return $this->contextString;
}
/**
* Returns TRUE if this context is the Development context or a sub-context of it
*
* @return bool
*/
public function isDevelopment()
{
return $this->rootContextString === 'Development';
}
/**
* Returns TRUE if this context is the Production context or a sub-context of it
*
* @return bool
*/
public function isProduction()
{
return $this->rootContextString === 'Production';
}
/**
* Returns TRUE if this context is the Testing context or a sub-context of it
*
* @return bool
*/
public function isTesting()
{
return $this->rootContextString === 'Testing';
}
/**
* Returns the parent context object, if any
*
* @return \TYPO3\CMS\Core\Core\ApplicationContext|null the parent context or NULL, if there is none
*/
public function getParent()
{
return $this->parentContext;
}
}