Replaces file paths like "files/lorem/ipsum/foo.jpg" in Contao text elements with {{file::…}} insert tags.

filetags.php

<?php

/**
 * Contao Open Source CMS
 *
 * Copyright (c) 2005-2015 Leo Feyer
 *
 * @license LGPL-3.0+
 */


// inizialize the contao framework
define('TL_MODE', 'FE');
require('system/initialize.php');


/**
 * Class FileTags
 * Contains method to replace file paths like "files/lorem/ipsum/foo.jpg" with 
 * their file tags {{file::…}}
 */
class FileTags extends Controller
{
	/**
	 * Call the parent constructor.
	 *
	 * @param	void
	 * @return	void
	 */
	public function __construct()
	{
		parent::__construct();
	}


	/**
	 * Runs the conversion process
	 *
	 * There is room for improvement in detecting the file paths via regex.
	 * Also the decode process might need some improvement.
	 *
	 * @param	void
	 * @return	void
	 */
	public function run()
	{
		// get all content elements with files/
		$objContent = \ContentModel::findBy( array("text LIKE ?"), array("%files/%"), array('order' => 'id DESC') );

		// go through each content element
		while( $objContent->next() )
		{
			// match the files/ path
			preg_match_all( '~"(files/[^"]*\..{3,4})"~', $objContent->text, $matches );

			// go through each match
			foreach( $matches[1] as $strFilePath )
			{
				// decode
				$strFilePathReal = urldecode( $strFilePath );
				$strFilePathReal = str_replace( '[&]', '&', $strFilePathReal );

				// get the files object
				if( ( $objFile = \FilesModel::findByPath( urldecode( $strFilePathReal ) ) ) !== null )
				{
					// construct file tag
					$strFileTag = '{{file::' . \String::binToUuid( $objFile->uuid ) . '}}';
					
					// replace file path with file tag
					$objContent->text = str_replace( $strFilePath, $strFileTag, $objContent->text );
				}
			}

			// save content element
			$objContent->save();
		}
	}
}


// create a FileTags instance and run it
$objFileTags = new FileTags();
$objFileTags->run();