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<?php
class Zz_Text_Cached extends Plugin {
private $host;
function about() {
return array(1.0,
"Rewrite destinations of text links if local cache exists",
"fox");
}
function init($host) {
$this->host = $host;
$host->add_hook($host::HOOK_RENDER_ARTICLE, $this);
$host->add_hook($host::HOOK_RENDER_ARTICLE_CDM, $this);
}
function hook_render_article($article) {
return $this->hook_render_article_cdm($article);
}
function hook_render_article_cdm($article) {
$doc = new DOMDocument();
$found = false;
if (@$doc->loadHTML($article["content"])) {
$xpath = new DOMXpath($doc);
$elems = $xpath->query('(//*[@href])');
foreach ($elems as $elem) {
$url = $elem->getAttribute("href");
$local_filename = CACHE_DIR . "/images/" . sha1($url);
if (file_exists($local_filename) && filesize($local_filename) > 0) {
$local_url = get_self_url_prefix() . '/public.php?op=cached_url&hash=' . sha1($url);
$elem->setAttribute("href", $local_url);
/*$elem->nodeValue = "";
$elem->appendChild($doc->createTextNode($local_url));*/
$found = true;
}
}
}
if ($found) {
$article["content"] = $doc->saveXML();
}
return $article;
}
function api_version() {
return 2;
}
}
?>
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