From 2f67340e551b12dce8824381c3291bb2137857cb Mon Sep 17 00:00:00 2001
From: Bernhard Posselt <nukeawhale@gmail.com>
Date: Wed, 28 Aug 2013 19:19:28 +0200
Subject: Possible backwards incompatible change by using the link provided by
 simplepie instead of the user for the url hash. This prevents duplication of
 the feed when adding a slightly different feed url which points to the same
 feed and allows a speedup from O(n) to O(1) for article enhanchers

---
 utility/articleenhancer/articleenhancer.php | 32 +++++++++----------
 utility/articleenhancer/defaultenhancer.php | 49 -----------------------------
 utility/articleenhancer/enhancer.php        | 33 +++++++++++++------
 utility/feedfetcher.php                     |  4 +--
 4 files changed, 39 insertions(+), 79 deletions(-)
 delete mode 100644 utility/articleenhancer/defaultenhancer.php

(limited to 'utility')

diff --git a/utility/articleenhancer/articleenhancer.php b/utility/articleenhancer/articleenhancer.php
index d7701d53b..194137e72 100644
--- a/utility/articleenhancer/articleenhancer.php
+++ b/utility/articleenhancer/articleenhancer.php
@@ -60,27 +60,23 @@ abstract class ArticleEnhancer {
 	}
 
 
-	public function canHandle($item){
-		return preg_match($this->articleUrlRegex, $item->getUrl()) == true;
-	}
-
-
 	public function enhance($item){
-		$file = $this->fileFactory->getFile($item->getUrl(), $this->maximumTimeout);
-		$dom = new \DOMDocument();
-		@$dom->loadHTML($file->body);
-		$xpath = new \DOMXpath($dom);
-		$xpathResult = $xpath->evaluate($this->articleXPath);
-
-		// in case it wasnt a text query assume its a single 
-		if(!is_string($xpathResult)) {
-			$xpathResult = $this->domToString($xpathResult);
+		if(preg_match($this->articleUrlRegex, $item->getUrl())) {
+			$file = $this->fileFactory->getFile($item->getUrl(), $this->maximumTimeout);
+			$dom = new \DOMDocument();
+			@$dom->loadHTML($file->body);
+			$xpath = new \DOMXpath($dom);
+			$xpathResult = $xpath->evaluate($this->articleXPath);
+
+			// in case it wasnt a text query assume its a single 
+			if(!is_string($xpathResult)) {
+				$xpathResult = $this->domToString($xpathResult);
+			}
+
+			$sanitizedResult = $this->purifier->purify($xpathResult);
+			$item->setBody($sanitizedResult);
 		}
 
-		$sanitizedResult = $this->purifier->purify($xpathResult);
-		$item->setBody($sanitizedResult);
-
-
 		return $item;
 	}
 
diff --git a/utility/articleenhancer/defaultenhancer.php b/utility/articleenhancer/defaultenhancer.php
deleted file mode 100644
index eb3045ceb..000000000
--- a/utility/articleenhancer/defaultenhancer.php
+++ /dev/null
@@ -1,49 +0,0 @@
-<?php
-
-/**
-* ownCloud - News
-*
-* @author Alessandro Cosentino
-* @author Bernhard Posselt
-* @copyright 2012 Alessandro Cosentino cosenal@gmail.com
-* @copyright 2012 Bernhard Posselt dev@bernhard-posselt.com
-*
-* This library is free software; you can redistribute it and/or
-* modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
-* License as published by the Free Software Foundation; either
-* version 3 of the License, or any later version.
-*
-* This library is distributed in the hope that it will be useful,
-* but WITHOUT ANY WARRANTY; without even the implied warranty of
-* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-* GNU AFFERO GENERAL PUBLIC LICENSE for more details.
-*
-* You should have received a copy of the GNU Affero General Public
-* License along with this library.  If not, see <http://www.gnu.org/licenses/>.
-*
-*/
-
-namespace OCA\News\Utility\ArticleEnhancer;
-
-use \OCA\News\Utility\SimplePieFileFactory;
-
-
-class DefaultEnhancer extends ArticleEnhancer {
-
-
-	public function __construct(){
-		parent::__construct(null, new SimplePieFileFactory(), null, null, null);
-	}
-
-
-	public function canHandle($item){
-		return true;
-	}
-
-
-	public function enhance($item){
-		return $item;
-	}
-
-
-}
\ No newline at end of file
diff --git a/utility/articleenhancer/enhancer.php b/utility/articleenhancer/enhancer.php
index 059904f63..d7d96f6a9 100644
--- a/utility/articleenhancer/enhancer.php
+++ b/utility/articleenhancer/enhancer.php
@@ -28,23 +28,36 @@ namespace OCA\News\Utility\ArticleEnhancer;
 
 class Enhancer {
 
-	private $enhancers;
+	private $enhancers = array();
 
-	public function __construct(){
-		$this->enhancers = array();
+	public function registerEnhancer($feedUrl, ArticleEnhancer $enhancer){
+		$feedUrl = $this->removeTrailingSlash($feedUrl);
+
+		// create hashkeys for all supported protocols for quick access
+		$this->enhancers[$feedUrl] = $enhancer;
+		$this->enhancers['https://' . $feedUrl] = $enhancer;
+		$this->enhancers['http://' . $feedUrl] = $enhancer;
+		$this->enhancers['https://www.' . $feedUrl] = $enhancer;
+		$this->enhancers['http://www.' . $feedUrl] = $enhancer;
 	}
 
 
-	public function registerEnhancer(ArticleEnhancer $enhancer){
-		array_push($this->enhancers, $enhancer);
+	public function enhance($item, $feedUrl){
+		$feedUrl = $this->removeTrailingSlash($feedUrl);
+
+		if(array_key_exists($feedUrl, $this->enhancers)) {
+			return $this->enhancers[$feedUrl]->enhance($item);
+		} else {
+			return $item;
+		}
 	}
 
 
-	public function enhance($item){
-		foreach($this->enhancers as $enhancer){
-			if($enhancer->canHandle($item)){
-				return $enhancer->enhance($item);
-			}
+	private function removeTrailingSlash($url) {
+		if($url[strlen($url)-1] === '/') {
+			return substr($url, 0, -1);
+		} else {
+			return $url;
 		}
 	}
 
diff --git a/utility/feedfetcher.php b/utility/feedfetcher.php
index 10a141e38..8ad800d3c 100644
--- a/utility/feedfetcher.php
+++ b/utility/feedfetcher.php
@@ -187,8 +187,8 @@ class FeedFetcher implements IFeedFetcher {
 
 		$feed->setTitle($title);
 		$feed->setUrl($url);
-		$feed->setLink($simplePieFeed->get_link());
-		$feed->setUrlHash(md5($url));
+		$feed->setLink($simplePieFeed->get_permalink());
+		$feed->setUrlHash(md5($feed->getLink()));
 		$feed->setAdded($this->time->getTime());
 
 		if ($getFavicon) {
-- 
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