BeforeFileCreatedEvent 

The PSR-14 event \TYPO3\CMS\Core\Resource\Event\BeforeFileCreatedEvent is fired before a file is about to be created within a resource storage / driver. The folder represents the "target folder".

This allows to further analyze or modify the file or filename before it is written by the driver.

Example 

API 

class BeforeFileCreatedEvent
Fully qualified name
\TYPO3\CMS\Core\Resource\Event\BeforeFileCreatedEvent

This event is fired before a file is about to be created within a Resource Storage / Driver.

The folder represents the "target folder".

This allows to further analyze or modify the file or filename before it is written by the driver.

getFileName ( )
Returns
string
getFolder ( )
Returns
\TYPO3\CMS\Core\Resource\Folder