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<?php
namespace phorkie;
class Renderer_Cache
{
/**
* Converts the code to HTML by fetching it from cache,
* or by letting the other renderes generate it and then
* storing it in the cache.
*
* @param File $file File to render
* @param Tool_Result $res Tool result to integrate
*
* @return string HTML
*/
public function toHtml(File $file, Tool_Result $res = null)
{
$html = null;
$cacheFile = $this->getCacheFile($file);
if ($res === null && $cacheFile !== null) {
$html = $this->loadHtmlFromCache($cacheFile);
}
if ($html === null) {
$html = $this->renderFile($file, $res);
if ($res === null && $cacheFile !== null) {
$this->storeHtmlIntoCache($cacheFile, $html);
}
}
return $html;
}
protected function renderFile(File $file, Tool_Result $res = null)
{
$ext = $file->getExt();
$class = '\\phorkie\\Renderer_Unknown';
if (isset($GLOBALS['phorkie']['languages'][$ext]['renderer'])) {
$class = $GLOBALS['phorkie']['languages'][$ext]['renderer'];
} else if ($file->isText()) {
$class = '\\phorkie\\Renderer_Geshi';
} else if (isset($GLOBALS['phorkie']['languages'][$ext]['mime'])) {
$type = $GLOBALS['phorkie']['languages'][$ext]['mime'];
if (substr($type, 0, 6) == 'image/') {
$class = '\\phorkie\\Renderer_Image';
}
}
$rend = new $class();
return $rend->toHtml($file, $res);
}
/**
* @return null|string NULL when there is no cache, string with HTML
* otherwise
*/
protected function loadHtmlFromCache($cacheFile)
{
if (!file_exists($cacheFile)) {
return null;
}
return file_get_contents($cacheFile);
}
protected function storeHtmlIntoCache($cacheFile, $html)
{
file_put_contents($cacheFile, $html);
}
protected function getCacheFile(File $file)
{
if (!$GLOBALS['phorkie']['cfg']['cachedir']
|| !is_dir($GLOBALS['phorkie']['cfg']['cachedir'])
) {
return null;
}
return $GLOBALS['phorkie']['cfg']['cachedir']
. '/' . $file->repo->id
. '-' . $file->repo->hash
. '-' . str_replace('/', '-', $file->getFilename())
. '.html';
}
}
?>
|
