implement experimental article on-import data filters

2 files changed, 61 insertions, 0 deletions

diff --git a/classes/filter.php b/classes/filter.php
new file mode 100644
index 000000000..8d6bf6f26
--- /dev/null
+++ b/classes/filter.php
@@ -0,0 +1,14 @@
+<?php
+class Filter {
+	protected $link;
+
+	function __construct($link) {
+		$this->link = $link;
+	}
+
+	function filter_article($article) {
+		return $article;
+	}
+
+}
+?>
diff --git a/classes/filter/redditimgur.php b/classes/filter/redditimgur.php
new file mode 100644
index 000000000..6b41015e7
--- /dev/null
+++ b/classes/filter/redditimgur.php
@@ -0,0 +1,47 @@
+<?php
+class Filter_RedditImgur {
+
+	function filter_article($article) {
+
+		if (strpos($article["link"], "reddit.com/r/") !== FALSE) {
+			if (strpos($article["content"], "i.imgur.com") !== FALSE) {
+
+				$doc = new DOMDocument();
+				@$doc->loadHTML($article["content"]);
+
+				if ($doc) {
+					$xpath = new DOMXPath($doc);
+					$entries = $xpath->query('(//a[@href]|//img[@src])');
+
+					foreach ($entries as $entry) {
+						if ($entry->hasAttribute("href")) {
+							if (preg_match("/i.imgur.com\/.*?.jpg/", $entry->getAttribute("href"))) {
+
+							 	$img = $doc->createElement('img');
+								$img->setAttribute("src", $entry->getAttribute("href"));
+
+								$entry->parentNode->replaceChild($img, $entry);
+							}
+						}
+
+						// remove tiny thumbnails
+						if ($entry->hasAttribute("src")) {
+							if ($entry->parentNode && $entry->parentNode->parentNode) {
+								$entry->parentNode->parentNode->removeChild($entry->parentNode);
+							}
+						}
+					}
+
+					$node = $doc->getElementsByTagName('body')->item(0);
+
+					if ($node) {
+						$article["content"] = $doc->saveXML($node, LIBXML_NOEMPTYTAG);
+					}
+				}
+			}
+		}
+
+		return $article;
+	}
+}
+?>