/**
* Delete Expired Captcha Images
*
* @return Mage_Captcha_Model_Observer
*/
public function deleteExpiredImages()
{
foreach (Mage::app()->getWebsites(true) as $website) {
$expire = time() - Mage::helper('Mage_Captcha_Helper_Data')->getConfigNode('timeout', $website->getDefaultStore()) * 60;
$imageDirectory = Mage::helper('Mage_Captcha_Helper_Data')->getImgDir($website);
foreach ($this->_filesystem->getNestedKeys($imageDirectory) as $filePath) {
if ($this->_filesystem->isFile($filePath) && pathinfo($filePath, PATHINFO_EXTENSION) == 'png' && $this->_filesystem->getMTime($filePath) < $expire) {
$this->_filesystem->delete($filePath);
}
}
}
return $this;
}
protected function _generateRow($filename)
{
$filename = preg_replace('~[/\\\\]+~', DIRECTORY_SEPARATOR, $filename);
return array('filename' => $filename, 'basename' => basename($filename), 'mtime' => $this->_filesystem->getMTime($filename));
}
/**
* Merge files, located under the same folder, into one and return file name of merged file
*
* @param array $files list of names relative to the same folder
* @param string $contentType
* @return string
* @throws Magento_Exception if not existing file requested for merge
*/
protected function _mergeFiles($files, $contentType)
{
$filesToMerge = array();
$mergedFile = array();
$jsDir = Mage::getBaseDir('js');
$publicDir = $this->_buildPublicViewFilename('');
foreach ($files as $file) {
$params = array();
$this->_updateParamDefaults($params);
$filesToMerge[$file] = $this->_publishViewFile($file, $params);
$mergedFile[] = str_replace('\\', '/', str_replace(array($jsDir, $publicDir), '', $filesToMerge[$file]));
}
$mergedFile = self::PUBLIC_MERGE_DIR . DS . md5(implode('|', $mergedFile)) . ".{$contentType}";
$mergedFile = $this->_buildPublicViewFilename($mergedFile);
$mergedMTimeFile = $mergedFile . '.dat';
$filesMTimeData = '';
foreach ($filesToMerge as $file) {
$filesMTimeData .= $this->_filesystem->getMTime($file);
}
if ($this->_filesystem->has($mergedFile) && $this->_filesystem->has($mergedMTimeFile) && $filesMTimeData == $this->_filesystem->read($mergedMTimeFile)) {
return $mergedFile;
}
if (!$this->_filesystem->isDirectory(dirname($mergedFile))) {
$this->_filesystem->createDirectory(dirname($mergedFile), 0777);
}
$result = array();
foreach ($filesToMerge as $file) {
if (!$this->_filesystem->has($file)) {
throw new Magento_Exception("Unable to locate file '{$file}' for merging.");
}
$content = $this->_filesystem->read($file);
if ($contentType == self::CONTENT_TYPE_CSS) {
$offset = $this->_getFilesOffset($file, dirname($mergedFile));
$content = $this->_applyCssUrlOffset($content, $offset);
}
$result[] = $content;
}
$result = ltrim(implode($result));
if ($contentType == self::CONTENT_TYPE_CSS) {
$result = $this->_popCssImportsUp($result);
}
$this->_filesystem->write($mergedFile, $result);
$this->_filesystem->write($mergedMTimeFile, $filesMTimeData);
return $mergedFile;
}
