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<?php
namespace yii\base;
/**
* Created by JetBrains PhpStorm.
* User: qiang
* Date: 2/1/13
* Time: 12:43 PM
* To change this template use File | Settings | File Templates.
*/
abstract class ViewRenderer extends Component
{
/**
* @var boolean whether to store the parsing results in the application's
* runtime directory. Defaults to true. If false, the parsing results will
* be saved as files under the same directory as the source view files and the
* file names will be the source file names appended with letter 'c'.
*/
public $useRuntimePath = true;
/**
* @var integer the chmod permission for temporary directories and files
* generated during parsing. Defaults to 0755 (owner rwx, group rx and others rx).
*/
public $filePermission = 0755;
/**
* @var string the extension name of the view file. Defaults to '.php'.
*/
public $fileExtension = '.php';
/**
* Parses the source view file and saves the results as another file.
* @param string $sourceFile the source view file path
* @param string $viewFile the resulting view file path
*/
abstract protected function generateViewFile($sourceFile, $viewFile);
/**
* Renders a view file.
* This method is required by {@link IViewRenderer}.
* @param CBaseController $context the controller or widget who is rendering the view file.
* @param string $sourceFile the view file path
* @param mixed $data the data to be passed to the view
* @param boolean $return whether the rendering result should be returned
* @return mixed the rendering result, or null if the rendering result is not needed.
*/
public function renderFile($context, $sourceFile, $data, $return)
{
if (!is_file($sourceFile) || ($file = realpath($sourceFile)) === false) {
throw new CException(Yii::t('yii', 'View file "{file}" does not exist.', array('{file}' => $sourceFile)));
}
$viewFile = $this->getViewFile($sourceFile);
if (@filemtime($sourceFile) > @filemtime($viewFile)) {
$this->generateViewFile($sourceFile, $viewFile);
@chmod($viewFile, $this->filePermission);
}
return $context->renderInternal($viewFile, $data, $return);
}
/**
* Generates the resulting view file path.
* @param string $file source view file path
* @return string resulting view file path
*/
protected function getViewFile($file)
{
if ($this->useRuntimePath) {
$crc = sprintf('%x', crc32(get_class($this) . Yii::getVersion() . dirname($file)));
$viewFile = Yii::app()->getRuntimePath() . DIRECTORY_SEPARATOR . 'views' . DIRECTORY_SEPARATOR . $crc . DIRECTORY_SEPARATOR . basename($file);
if (!is_file($viewFile)) {
@mkdir(dirname($viewFile), $this->filePermission, true);
}
return $viewFile;
} else {
return $file . 'c';
}
}
}