I have written before about how I managed to compress Creole into a single file. Now, I have extracted the more generic bits of code into a single utility class. The class has a couple callback methods to cope with custom handling. Actually, I implemented those callbacks exactly the way I needed them to implement the creole specific code, but it should the typical exceptions.

To use this, I added the first CLI script to ZenMagick. I do not expect a lot of user to require to run it, but it makes for a nice example of how to use the class.

For those interested in all the gory details, here is the source of the script:


// load ZenMagick core
$coreDir = dirname(dirname(__FILE__)) . '/core/';
require $coreDir.'ZMLoader.php';
ZMLoader::instance()->addPath($coreDir);
ZMLoader::resolve('ZMObject');
ZMLoader::resolve('ZMPhpPackagePacker');

/**
* Custom class for Creole specific dependency handling.
*/
class CreolePacker extends ZMPhpPackagePacker {
/**
* {@inheritDoc}
*/
public function isResolved($class, $level, $files) {
// Record does have circular references
return (‘Record’ == $class && 1 == $level);
}

/**
* {@inheritDoc}
*/
public function finalizeDependencies($dependencies, $files) {
// there is no explicit include/require for this
$dependencies['DebugConnection'][] = ‘Connection’;
return $dependencies;
}
}

// pack; ideally path/version should be CLI args…
$creoleVersion = ‘creole-1.1.0′;
$packer = new CreolePacker(‘c:/temp/’.$creoleVersion.’/classes/’, ‘c:/temp/’.$creoleVersion.’.packed.php’);
$packer->setDebug(false);
$packer->packFiles();

The script extends the generic package packer class to implement custom callbacks. Creole is actually a quite easy to analyze, as almost all (except for one Connection) dependencies are covered by include and require statements.

So, executing the scirpt will result in the new file creole-1.1.0.pack.php which is about 187kb large and, at least for the default drivers, makes the custom class loading in Creole obsolete.

long term I hope to be able to extract the generic MVC code out of ZenMagick and compress is using the some similar code. This will require some more work, though, as the current class does not look at extends and implements of classes. Since all code depends on the loader, rather than import/require, analyzing those will be required in order to build a proper dependency map.

Should anyone use this for their own project, then it would be great to let me know.