initial

1 files changed, 62 insertions, 0 deletions

diff --git a/init.php b/init.php
new file mode 100644
index 0000000..90d01a8
--- /dev/null
+++ b/init.php
@@ -0,0 +1,62 @@
+<?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;
+	}
+
+}
+?>