[TYPO3-dev] how to iterate over LoadedExtensionArrayElement

[Franz Holzinger]

Hello Alex,

thank you for your help. Your alternative code does the job.

The function getValidKey is needed for another function guessKey. This 
function guesses the extension key from a given extension key, classname 
or filename. The extension key part inside of the classname has the 
underscore stripped off. This makes it necessary to go sequentially 
through a loop of all possible extension keys in order to detect the 
corresponding extension key which can have an underscores inside of its 
name.

----------------
	/**
	 * Guess the key from the given information
	 *
	 * Guessing has the following order:
	 *
	 * 1. A KEY itself is tried.
	 *    <pre>
	 *     Example: my_extension
	 *    </pre>
	 * 2. A classname of the pattern tx_KEY_something_else is tried.
	 *    <pre>
	 *     Example: tx_myextension_view
	 *    </pre>
	 * 3. A full classname of the pattern ' * tx_KEY_something_else.php' is 
tried.
	 *    <pre>
	 *     Example: class.tx_myextension_view.php
	 *     Example: brokenPath/class.tx_myextension_view.php
	 *    </pre>
	 * 4. A path that starts with the KEY is tried.
	 *    <pre>
	 *     Example: my_extension/class.view.php
	 *    </pre>
	 *
	 * @param	string		the minimal necessary information (see 1-4)
	 * @return	string		the guessed key, FALSE if no result
	 */
	public function guessKey ($minimalInformation) {
		$info=trim($minimalInformation);
		$key = FALSE;
		if($info){
			// Can it be the key itself?
			if(!$key && preg_match('/^([A-Za-z_]*)$/', $info, $matches ) ) {
				$key = $matches[1];
				$key = self::getValidKey($key);
			}
-----------


Here is the resulting PHP function.


use TYPO3\CMS\Core\Utility\GeneralUtility;


/**
* Check if the given extension key is within the loaded extensions
*
* The key can be given in the regular format or with underscores stripped.
*
* @param	string		extension key to check
* @return	boolean		is the key valid?
*/
public function getValidKey ($rawKey) {

	$result = FALSE;
	$rawKey = str_replace('_', '', $rawKey);
	$packageManager = 
GeneralUtility::makeInstance('TYPO3\\CMS\\Core\\Package\\PackageManager');
	foreach ($packageManager->getActivePackages() as $package) {
		$packageKey = $package->getPackageKey();
		if (
			str_replace('_', '', $packageKey) == $rawKey
		) {
			$result =  $packageKey;
			break;
		}
	}

	return $result;
}


This will be part of the next div2007 1.1.2.


- Franz

Le 06. 11. 13 09:59, Alexander Stehlik a écrit :
> Sorry, just got the point with the replacement of the underscore in the
> Extension key.
>
> You can have a look a a patch in gerrit, that is also iterating over the
> active packages:
>
> https://review.typo3.org/#/c/25002/2/typo3/sysext/impexp/Classes/Controller/ImportExportController.php
>
>
> Code looks basically like:
>
> $packageManager =
> GeneralUtility::makeInstance('TYPO3\\CMS\\Core\\Package\\PackageManager');
> foreach ($packageManager->getActivePackages() as $package) {
>      $packageKey = $package->getPackageKey();
>      ... // do your own stuff here
> }
>
> Hope this helps.
>
> Cheers,
> Alex
>