/**
* @see npOptimizerBase
*/
public function configure(array $configuration = array())
{
parent::configure($configuration);
if (!isset($configuration['drivers'])) {
throw new sfConfigurationException('The "drivers" configuration parameter is mandatory in order to use a batch optimizer');
}
$this->setDrivers($configuration['drivers']);
}
/**
* @see npOptimizerBase
*/
public function configure(array $configuration = array())
{
parent::configure($configuration);
if (isset($configuration['files'])) {
parent::setFiles($configuration['files']);
} else {
if (isset($configuration['folders'])) {
parent::setFiles($this->findPngImages($configuration['folders']));
} else {
throw new sfConfigurationException('You must define either a "files" or a "folders" option to use this optimizer');
}
}
// PNG images will be replaced by their optimized versions
$this->replaceFiles = true;
}
/**
* Combines the results of every file optimization in one single file.
*
* @return array The list of resulting optimized files
*
* @throws RuntimeException if a problem occurs
*/
public function optimize()
{
$results = parent::optimize();
$optimizedContents = '';
foreach ($results['statistics'] as $file => $statistic) {
$optimizedContents .= $statistic['optimizedContent'];
}
if (empty($optimizedContents)) {
throw new RuntimeException('Empty optimized contents!');
}
if (!file_put_contents($optimizedFile = sprintf('%s%s', $this->baseAssetsDir, $this->destination), $optimizedContents)) {
throw new RuntimeException(sprintf('Unable to write optimized and combined asset file "%s"', $optimizedFile));
}
return array_merge($results, array('generatedFile' => $optimizedFile));
}
