config_handlers.xml:

<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<configurations parent="%core.system_config_dir%/config_handlers.xml">
	<configuration>
		<handlers>
			<handler pattern="%core.config_dir%/facebook.xml" class="ConfigDirectivesConfigHandler" />
		</handlers>
	</configuration>
</configurations>

autoload.xml:
<autoload name="ConfigDirectivesConfigHandler">%core.lib_dir%/ConfigDirectivesConfigHandler.class.php</autoload>


<?php

/**
 *
 * @author     Veikko Makinen <mail@veikkomakinen.com
 * @copyright  (c) Authors
 *
 * @version    $Id$
 */

class ConfigDirectivesConfigHandler extends AgaviConfigHandler
{
	/**
	 * @see        AgaviIniConfigHandler::execute()
	 *
	 */
	public function execute($config, $context = null)
	{
		$configurations = $this->orderConfigurations(AgaviConfigCache::parseConfig($config, false, $this->getValidationFile())->configurations, AgaviConfig::get('core.environment'), $context);
		$code = '';

		foreach($configurations as $cfg) {

			$code .= $this->convert($cfg);
		}

		date_default_timezone_set('GMT');
		
		// compile data
		$retval = "<?php\n" .
				  "// auto-generated by ".__CLASS__."\n" .
				  "// date: %s\n%s\n?>";
		$retval = sprintf($retval, date('m/d/Y H:i:s'), $code);

		return $retval;

	}

	/**
	 *
	 * @param      AgaviConfigValueHolder The config value to convert.
	 *
	 * @author     Veikko Makinen <mail@veikkomakinen.com>
	 */
	protected function convert(AgaviConfigValueHolder $item)
	{
		$prefix = '';
		$data = '';

		foreach($item->getChildren() as $directives) {

			$prefix = $directives->getAttribute('prefix', '');
			foreach($directives->getChildren() as $directive) {
				$name = ($prefix ? $prefix.'.' : '') . $directive->getAttribute('name');
				$value = var_export($this->literalize($this->replaceConstants($directive->getValue())), true);

				$data .= "AgaviConfig::set('$name', $value); \n";

			}
		}

		return $data;
	}
}
?>