Merge branch '163-export' into dev

Conflicts:
	app/layout/aside_feed.phtml

17 files changed, 691 insertions, 278 deletions

diff --git a/README.md b/README.md
index 6c434527c..2003b6a9d 100644
--- a/README.md
+++ b/README.md
@@ -27,7 +27,7 @@ Privilégiez pour cela des demandes sur GitHub
 * Serveur Web Apache2 ou Nginx (non testé sur les autres)
 * PHP 5.2.1+ (PHP 5.3.7+ recommandé)
 	* Requis : [PDO_MySQL](http://php.net/pdo-mysql), [cURL](http://php.net/curl), [LibXML](http://php.net/xml), [PCRE](http://php.net/pcre), [ctype](http://php.net/ctype)
-	* Recommandés : [JSON](http://php.net/json), [zlib](http://php.net/zlib), [mbstring](http://php.net/mbstring), [iconv](http://php.net/iconv)
+	* Recommandés : [JSON](http://php.net/json), [zlib](http://php.net/zlib), [mbstring](http://php.net/mbstring), [iconv](http://php.net/iconv), [Zip](http://php.net/zip)
 * MySQL 5.0.3+ (ou SQLite 3.7.4+ à venir)
 * Un navigateur Web récent tel Firefox 4+, Chrome, Opera, Safari, Internet Explorer 9+
 	* Fonctionne aussi sur mobile
diff --git a/app/Controllers/configureController.php b/app/Controllers/configureController.php
index bd0d0a185..b4de19e11 100755
--- a/app/Controllers/configureController.php
+++ b/app/Controllers/configureController.php
@@ -62,7 +62,6 @@ class FreshRSS_configure_Controller extends Minz_ActionController {
 		$this->view->categories = $catDAO->listCategories (false);
 		$this->view->defaultCategory = $catDAO->getDefault ();
 		$this->view->feeds = $feedDAO->listFeeds ();
-		$this->view->flux = false;
 
 		Minz_View::prependTitle (Minz_Translate::t ('categories_management') . ' · ');
 	}
diff --git a/app/Controllers/feedController.php b/app/Controllers/feedController.php
index 503295587..fce008399 100755
--- a/app/Controllers/feedController.php
+++ b/app/Controllers/feedController.php
@@ -368,80 +368,6 @@ class FreshRSS_feed_Controller extends Minz_ActionController {
 		}
 	}
 
-	public function massiveImportAction () {
-		@set_time_limit(300);
-
-		$this->catDAO = new FreshRSS_CategoryDAO ();
-		$this->catDAO->checkDefault ();
-
-		$entryDAO = new FreshRSS_EntryDAO ();
-		$feedDAO = new FreshRSS_FeedDAO ();
-
-		$categories = Minz_Request::param ('categories', array (), true);
-		$feeds = Minz_Request::param ('feeds', array (), true);
-
-		// on ajoute les catégories en masse dans une fonction à part
-		$this->addCategories ($categories);
-
-		// on calcule la date des articles les plus anciens qu'on accepte
-		$nb_month_old = $this->view->conf->old_entries;
-		$date_min = time () - (3600 * 24 * 30 * $nb_month_old);
-
-		// la variable $error permet de savoir si une erreur est survenue
-		// Le but est de ne pas arrêter l'import même en cas d'erreur
-		// L'utilisateur sera mis au courant s'il y a eu des erreurs, mais
-		// ne connaîtra pas les détails. Ceux-ci seront toutefois logguées
-		$error = false;
-		$i = 0;
-		foreach ($feeds as $feed) {
-			try {
-				$values = array (
-					'id' => $feed->id (),
-					'url' => $feed->url (),
-					'category' => $feed->category (),
-					'name' => $feed->name (),
-					'website' => $feed->website (),
-					'description' => $feed->description (),
-					'lastUpdate' => 0,
-					'httpAuth' => $feed->httpAuth ()
-				);
-
-				// ajout du flux que s'il n'est pas déjà en BDD
-				if (!$feedDAO->searchByUrl ($values['url'])) {
-					$id = $feedDAO->addFeed ($values);
-					if ($id) {
-						$feed->_id ($id);
-						$feed->faviconPrepare();
-					} else {
-						$error = true;
-					}
-				}
-			} catch (FreshRSS_Feed_Exception $e) {
-				$error = true;
-				Minz_Log::record ($e->getMessage (), Minz_Log::WARNING);
-			}
-		}
-
-		if ($error) {
-			$res = Minz_Translate::t ('feeds_imported_with_errors');
-		} else {
-			$res = Minz_Translate::t ('feeds_imported');
-		}
-
-		$notif = array (
-			'type' => 'good',
-			'content' => $res
-		);
-		Minz_Session::_param ('notification', $notif);
-		Minz_Session::_param ('actualize_feeds', true);
-
-		// et on redirige vers la page d'accueil
-		Minz_Request::forward (array (
-			'c' => 'index',
-			'a' => 'index'
-		), true);
-	}
-
 	public function deleteAction () {
 		if (Minz_Request::isPost ()) {
 			$type = Minz_Request::param ('type', 'feed');
@@ -485,16 +411,4 @@ class FreshRSS_feed_Controller extends Minz_ActionController {
 			}
 		}
 	}
-
-	private function addCategories ($categories) {
-		foreach ($categories as $cat) {
-			if (!$this->catDAO->searchByName ($cat->name ())) {
-				$values = array (
-					'id' => $cat->id (),
-					'name' => $cat->name (),
-				);
-				$catDAO->addCategory ($values);
-			}
-		}
-	}
 }
diff --git a/app/Controllers/importExportController.php b/app/Controllers/importExportController.php
index f697f4c9e..02d62c890 100644
--- a/app/Controllers/importExportController.php
+++ b/app/Controllers/importExportController.php
@@ -3,84 +3,345 @@
 class FreshRSS_importExport_Controller extends Minz_ActionController {
 	public function firstAction() {
 		if (!$this->view->loginOk) {
-			Minz_Error::error (
+			Minz_Error::error(
 				403,
-				array ('error' => array (Minz_Translate::t ('access_denied')))
+				array('error' => array(Minz_Translate::t('access_denied')))
 			);
 		}
 
 		require_once(LIB_PATH . '/lib_opml.php');
+
+		$this->catDAO = new FreshRSS_CategoryDAO();
+		$this->entryDAO = new FreshRSS_EntryDAO();
+		$this->feedDAO = new FreshRSS_FeedDAO();
 	}
 
 	public function indexAction() {
-		$catDAO = new FreshRSS_CategoryDAO ();
-		$this->view->categories = $catDAO->listCategories ();
-
-		$feedDAO = new FreshRSS_FeedDAO ();
-		$this->view->feeds = $feedDAO->listFeeds ();
-
-		// au niveau de la vue, permet de ne pas voir un flux sélectionné dans la liste
-		$this->view->flux = false;
+		$this->view->categories = $this->catDAO->listCategories();
+		$this->view->feeds = $this->feedDAO->listFeeds();
 
-		Minz_View::prependTitle (Minz_Translate::t ('import_export') . ' · ');
+		Minz_View::prependTitle(Minz_Translate::t('import_export') . ' · ');
 	}
 
 	public function importAction() {
 		if (Minz_Request::isPost() && $_FILES['file']['error'] == 0) {
-			invalidateHttpCache();
-			// on parse le fichier OPML pour récupérer les catégories et les flux associés
-			try {
-				list ($categories, $feeds) = opml_import (
-					file_get_contents ($_FILES['file']['tmp_name'])
+			@set_time_limit(300);
+
+			$file = $_FILES['file'];
+			$type_file = $this->guessFileType($file['name']);
+
+			$list_files = array(
+				'opml' => array(),
+				'json_starred' => array(),
+				'json_feed' => array()
+			);
+
+			// We try to list all files according to their type
+			// A zip file is first opened and then its files are listed
+			$list = array();
+			if ($type_file === 'zip') {
+				$zip = zip_open($file['tmp_name']);
+
+				while (($zipfile = zip_read($zip)) !== false) {
+					$type_zipfile = $this->guessFileType(
+						zip_entry_name($zipfile)
+					);
+
+					if ($type_file !== 'unknown') {
+						$list_files[$type_zipfile][] = zip_entry_read(
+							$zipfile,
+							zip_entry_filesize($zipfile)
+						);
+					}
+				}
+
+				zip_close($zip);
+			} elseif ($type_file !== 'unknown') {
+				$list_files[$type_file][] = file_get_contents(
+					$file['tmp_name']
 				);
+			}
 
-				// On redirige vers le controller feed qui va se charger d'insérer les flux en BDD
-				// les flux sont mis au préalable dans des variables de Request
-				Minz_Request::_param ('categories', $categories);
-				Minz_Request::_param ('feeds', $feeds);
-				Minz_Request::forward (array ('c' => 'feed', 'a' => 'massiveImport'));
-			} catch (FreshRSS_Opml_Exception $e) {
-				Minz_Log::record ($e->getMessage (), Minz_Log::WARNING);
-
-				$notif = array (
-					'type' => 'bad',
-					'content' => Minz_Translate::t ('bad_opml_file')
+			// Import different files.
+			// OPML first(so categories and feeds are imported)
+			// Starred articles then so the "favourite" status is already set
+			// And finally all other files.
+			$error = false;
+			foreach ($list_files['opml'] as $opml_file) {
+				$error = $this->importOpml($opml_file);
+			}
+			foreach ($list_files['json_starred'] as $article_file) {
+				$error = $this->importArticles($article_file, true);
+			}
+			foreach ($list_files['json_feed'] as $article_file) {
+				$error = $this->importArticles($article_file);
+			}
+
+			// And finally, we get import status and redirect to the home page
+			$notif = null;
+			if ($error === true) {
+				$content_notif = Minz_Translate::t(
+					'feeds_imported_with_errors'
 				);
-				Minz_Session::_param ('notification', $notif);
+			} else {
+				$content_notif = Minz_Translate::t(
+					'feeds_imported'
+				);
+			}
+
+			Minz_Session::_param('notification', array(
+				'type' => 'good',
+				'content' => $content_notif
+			));
+			Minz_Session::_param('actualize_feeds', true);
+
+			Minz_Request::forward(array(
+				'c' => 'index',
+				'a' => 'index'
+			), true);
+		}
+
+		// What are you doing? you have to call this controller
+		// with a POST request!
+		Minz_Request::forward(array(
+			'c' => 'importExport',
+			'a' => 'index'
+		));
+	}
+
+	private function guessFileType($filename) {
+		// A *very* basic guess file type function. Only based on filename
+		// That's could be improved but should be enough, at least for a first
+		// implementation.
+		// TODO: improve this function?
 
-				Minz_Request::forward (array (
-					'c' => 'configure',
-					'a' => 'importExport'
-				), true);
+		if (substr_compare($filename, '.zip', -4) === 0) {
+			return 'zip';
+		} elseif (substr_compare($filename, '.opml', -5) === 0 ||
+		          substr_compare($filename, '.xml', -4) === 0) {
+			return 'opml';
+		} elseif (strcmp($filename, 'starred.json') === 0) {
+			return 'json_starred';
+		} elseif (substr_compare($filename, '.json', -5) === 0 &&
+		          strpos($filename, 'feed_') === 0) {
+			return 'json_feed';
+		} else {
+			return 'unknown';
+		}
+	}
+
+	private function importOpml($opml_file) {
+		$opml_array = array();
+		try {
+			$opml_array = libopml_parse_string($opml_file);
+		} catch (LibOPML_Exception $e) {
+			Minz_Log::warning($e->getMessage());
+			return true;
+		}
+
+		$this->catDAO->checkDefault();
+
+		return $this->addOpmlElements($opml_array['body']);
+	}
+
+	private function addOpmlElements($opml_elements, $parent_cat = null) {
+		$error = false;
+		foreach ($opml_elements as $elt) {
+			$res = false;
+			if (isset($elt['xmlUrl'])) {
+				$res = $this->addFeedOpml($elt, $parent_cat);
+			} else {
+				$res = $this->addCategoryOpml($elt, $parent_cat);
+			}
+
+			if (!$error && $res) {
+				// oops: there is at least one error!
+				$error = $res;
 			}
 		}
+
+		return $error;
+	}
+
+	private function addFeedOpml($feed_elt, $parent_cat) {
+		if (is_null($parent_cat)) {
+			// This feed has no parent category so we get the default one
+			$parent_cat = $this->catDAO->getDefault()->name();
+		}
+
+		$cat = $this->catDAO->searchByName($parent_cat);
+
+		if (!$cat) {
+			return true;
+		}
+
+		// We get different useful information
+		$url = html_chars_utf8($feed_elt['xmlUrl']);
+		$name = html_chars_utf8($feed_elt['text']);
+		$website = '';
+		if (isset($feed_elt['htmlUrl'])) {
+			$website = html_chars_utf8($feed_elt['htmlUrl']);
+		}
+		$description = '';
+		if (isset($feed_elt['description'])) {
+			$description = html_chars_utf8($feed_elt['description']);
+		}
+
+		$error = false;
+		try {
+			// Create a Feed object and add it in DB
+			$feed = new FreshRSS_Feed($url);
+			$feed->_category($cat->id());
+			$feed->_name($name);
+			$feed->_website($website);
+			$feed->_description($description);
+
+			// addFeedObject checks if feed is already in DB so nothing else to
+			// check here
+			$id = $this->feedDAO->addFeedObject($feed);
+			$error = ($id === false);
+		} catch (FreshRSS_Feed_Exception $e) {
+			Minz_Log::warning($e->getMessage());
+			$error = true;
+		}
+
+		return $error;
+	}
+
+	private function addCategoryOpml($cat_elt, $parent_cat) {
+		// Create a new Category object
+		$cat = new FreshRSS_Category(html_chars_utf8($cat_elt['text']));
+
+		$id = $this->catDAO->addCategoryObject($cat);
+		$error = ($id === false);
+
+		if (isset($cat_elt['@outlines'])) {
+			// Our cat_elt contains more categories or more feeds, so we
+			// add them recursively.
+			// Note: FreshRSS does not support yet category arborescence
+			$res = $this->addOpmlElements($cat_elt['@outlines'], $cat->name());
+			if (!$error && $res) {
+				$error = true;
+			}
+		}
+
+		return $error;
+	}
+
+	private function importArticles($article_file, $starred = false) {
+		$article_object = json_decode($article_file, true);
+		if (is_null($article_object)) {
+			Minz_Log::warning('Try to import a non-JSON file');
+			return true;
+		}
+
+		$is_read = $this->view->conf->mark_when['reception'] ? 1 : 0;
+
+		$google_compliant = (
+			strpos($article_object['id'], 'com.google') !== false
+		);
+
+		$error = false;
+		foreach ($article_object['items'] as $item) {
+			$feed = $this->addFeedArticles($item['origin'], $google_compliant);
+			if (is_null($feed)) {
+				$error = true;
+				continue;
+			}
+
+			$author = isset($item['author']) ? $item['author'] : '';
+			$key_content = ($google_compliant && !isset($item['content'])) ?
+			               'summary' : 'content';
+			$tags = $item['categories'];
+			if ($google_compliant) {
+				$tags = array_filter($tags, function($var) {
+					return strpos($var, '/state/com.google') === false;
+				});
+			}
+
+			$entry = new FreshRSS_Entry(
+				$feed->id(), $item['id'], $item['title'], $author,
+				$item[$key_content]['content'], $item['alternate'][0]['href'],
+				$item['published'], $is_read, $starred
+			);
+			$entry->_tags($tags);
+
+			$id = $this->entryDAO->addEntryObject(
+				$entry, $this->view->conf, $feed->keepHistory()
+			);
+
+			if (!$error && ($id === false)) {
+				$error = true;
+			}
+		}
+
+		return $error;
+	}
+
+	private function addFeedArticles($origin, $google_compliant) {
+		$default_cat = $this->catDAO->getDefault();
+
+		$return = null;
+		$key = $google_compliant ? 'htmlUrl' : 'feedUrl';
+		$url = $origin[$key];
+		$name = $origin['title'];
+		$website = $origin['htmlUrl'];
+		$error = false;
+		try {
+			// Create a Feed object and add it in DB
+			$feed = new FreshRSS_Feed($url);
+			$feed->_category($default_cat->id());
+			$feed->_name($name);
+			$feed->_website($website);
+
+			// addFeedObject checks if feed is already in DB so nothing else to
+			// check here
+			$id = $this->feedDAO->addFeedObject($feed);
+
+			if ($id !== false) {
+				$feed->_id($id);
+				$return = $feed;
+			}
+		} catch (FreshRSS_Feed_Exception $e) {
+			Minz_Log::warning($e->getMessage());
+		}
+
+		return $return;
 	}
 
 	public function exportAction() {
 		if (Minz_Request::isPost()) {
-			$this->view->_useLayout (false);
+			$this->view->_useLayout(false);
 
 			$export_opml = Minz_Request::param('export_opml', false);
 			$export_starred = Minz_Request::param('export_starred', false);
-			$export_all = Minz_Request::param('export_all', false);
+			$export_feeds = Minz_Request::param('export_feeds', false);
 
-			// code from https://stackoverflow.com/questions/1061710/php-zip-files-on-the-fly
+			// From https://stackoverflow.com/questions/1061710/php-zip-files-on-the-fly
 			$file = tempnam('tmp', 'zip');
 			$zip = new ZipArchive();
 			$zip->open($file, ZipArchive::OVERWRITE);
 
 			// Stuff with content
 			if ($export_opml) {
-				$zip->addFromString('feeds.opml', $this->generate_opml());
+				$zip->addFromString(
+					'feeds.opml', $this->generateOpml()
+				);
 			}
 			if ($export_starred) {
-				$zip->addFromString('starred.json', $this->generate_articles('starred'));
+				$zip->addFromString(
+					'starred.json', $this->generateArticles('starred')
+				);
 			}
-			if ($export_all) {
-				$zip->addFromString('all.json', $this->generate_articles('all'));
+			foreach ($export_feeds as $feed_id) {
+				$feed = $this->feedDAO->searchById($feed_id);
+				$zip->addFromString(
+					'feed_' . $feed->category() . '_' . $feed->id() . '.json',
+					$this->generateArticles('feed', $feed)
+				);
 			}
 
-			// Close and send to users
+			// Close and send to user
 			$zip->close();
 			header('Content-Type: application/zip');
 			header('Content-Length: ' . filesize($file));
@@ -90,22 +351,39 @@ class FreshRSS_importExport_Controller extends Minz_ActionController {
 		}
 	}
 
-	private function generate_opml() {
-		$feedDAO = new FreshRSS_FeedDAO ();
-		$catDAO = new FreshRSS_CategoryDAO ();
-
-		$list = array ();
-		foreach ($catDAO->listCategories () as $key => $cat) {
-			$list[$key]['name'] = $cat->name ();
-			$list[$key]['feeds'] = $feedDAO->listByCategory ($cat->id ());
+	private function generateOpml() {
+		$list = array();
+		foreach ($this->catDAO->listCategories() as $key => $cat) {
+			$list[$key]['name'] = $cat->name();
+			$list[$key]['feeds'] = $this->feedDAO->listByCategory($cat->id());
 		}
 
 		$this->view->categories = $list;
 		return $this->view->helperToString('export/opml');
 	}
 
-	private function generate_articles($type) {
-		// TODO: we should get articles according to $type
+	private function generateArticles($type, $feed = NULL) {
+		$this->view->categories = $this->catDAO->listCategories();
+
+		if ($type == 'starred') {
+			$this->view->list_title = Minz_Translate::t('starred_list');
+			$this->view->type = 'starred';
+			$this->view->entries = $this->entryDAO->listWhere(
+				's', '', 'all', 'ASC',
+				$this->entryDAO->countUnreadReadFavorites()['all']
+			);
+		} elseif ($type == 'feed' && !is_null($feed)) {
+			$this->view->list_title = Minz_Translate::t(
+				'feed_list', $feed->name()
+			);
+			$this->view->type = 'feed/' . $feed->id();
+			$this->view->entries = $this->entryDAO->listWhere(
+				'f', $feed->id(), 'all', 'ASC',
+				$this->view->conf->posts_per_page
+			);
+			$this->view->feed = $feed;
+		}
+
 		return $this->view->helperToString('export/articles');
 	}
 }
diff --git a/app/Exceptions/OpmlException.php b/app/Exceptions/OpmlException.php
deleted file mode 100644
index e0ea3e493..000000000
--- a/app/Exceptions/OpmlException.php
+++ /dev/null
@@ -1,6 +0,0 @@
-<?php
-class FreshRSS_Opml_Exception extends FreshRSS_Feed_Exception {
-	public function __construct ($name_file) {
-		parent::__construct ('OPML file is invalid');
-	}
-}
diff --git a/app/Models/CategoryDAO.php b/app/Models/CategoryDAO.php
index f3c02e3e4..6a9b839b9 100644
--- a/app/Models/CategoryDAO.php
+++ b/app/Models/CategoryDAO.php
@@ -18,6 +18,19 @@ class FreshRSS_CategoryDAO extends Minz_ModelPdo {
 		}
 	}
 
+	public function addCategoryObject($category) {
+		$cat = $this->searchByName($category->name());
+		if (!$cat) {
+			// Category does not exist yet in DB so we add it before continue
+			$values = array(
+				'name' => $category->name(),
+			);
+			return $this->addCategory($values);
+		}
+
+		return $cat->id();
+	}
+
 	public function updateCategory ($id, $valuesTmp) {
 		$sql = 'UPDATE `' . $this->prefix . 'category` SET name=? WHERE id=?';
 		$stm = $this->bd->prepare ($sql);
diff --git a/app/Models/EntryDAO.php b/app/Models/EntryDAO.php
index e4cf128ea..6d00967fc 100644
--- a/app/Models/EntryDAO.php
+++ b/app/Models/EntryDAO.php
@@ -35,6 +35,36 @@ class FreshRSS_EntryDAO extends Minz_ModelPdo {
 		}
 	}
 
+	public function addEntryObject($entry, $conf, $feedHistory) {
+		$existingGuids = array_fill_keys(
+			$this->listLastGuidsByFeed($entry->feed(), 20), 1
+		);
+
+		$nb_month_old = max($conf->old_entries, 1);
+		$date_min = time() - (3600 * 24 * 30 * $nb_month_old);
+
+		$eDate = $entry->date(true);
+
+		if ($feedHistory == -2) {
+			$feedHistory = $conf->keep_history_default;
+		}
+
+		if (!isset($existingGuids[$entry->guid()]) &&
+				($feedHistory != 0 || $eDate  >= $date_min)) {
+			$values = $entry->toArray();
+
+			$useDeclaredDate = empty($existingGuids);
+			$values['id'] = ($useDeclaredDate || $eDate < $date_min) ?
+				min(time(), $eDate) . uSecString() :
+				uTimeString();
+
+			return $this->addEntry($values);
+		}
+
+		// We don't return Entry object to avoid a research in DB
+		return -1;
+	}
+
 	public function markFavorite($ids, $is_favorite = true) {
 		if (!is_array($ids)) {
 			$ids = array($ids);
diff --git a/app/Models/FeedDAO.php b/app/Models/FeedDAO.php
index ca25c3aeb..b65ff4af0 100644
--- a/app/Models/FeedDAO.php
+++ b/app/Models/FeedDAO.php
@@ -24,6 +24,36 @@ class FreshRSS_FeedDAO extends Minz_ModelPdo {
 		}
 	}
 
+	public function addFeedObject($feed) {
+		// TODO: not sure if we should write this method in DAO since DAO
+		// should not be aware about feed class
+
+		// Add feed only if we don't find it in DB
+		$feed_search = $this->searchByUrl($feed->url());
+		if (!$feed_search) {
+			$values = array(
+				'id' => $feed->id(),
+				'url' => $feed->url(),
+				'category' => $feed->category(),
+				'name' => $feed->name(),
+				'website' => $feed->website(),
+				'description' => $feed->description(),
+				'lastUpdate' => 0,
+				'httpAuth' => $feed->httpAuth()
+			);
+
+			$id = $this->addFeed($values);
+			if ($id) {
+				$feed->_id($id);
+				$feed->faviconPrepare();
+			}
+
+			return $id;
+		}
+
+		return $feed_search->id();
+	}
+
 	public function updateFeed ($id, $valuesTmp) {
 		$set = '';
 		foreach ($valuesTmp as $key => $v) {
diff --git a/app/i18n/en.php b/app/i18n/en.php
index 3d516bbb4..614ff195d 100644
--- a/app/i18n/en.php
+++ b/app/i18n/en.php
@@ -138,9 +138,13 @@ return array (
 	'auto_share'			=> 'Share',
 	'auto_share_help'		=> 'If there is only one sharing mode, it is used. Else modes are accessible by their number.',
 
-	'file_to_import'		=> 'File to import',
+	'file_to_import'		=> 'File to import (OPML)',
 	'import'			=> 'Import',
 	'export'			=> 'Export',
+	'export_opml'			=> 'Export list of feeds (OPML)',
+	'export_starred'		=> 'Export your favourites',
+	'starred_list'			=> 'List of favourite articles',
+	'feed_list'			=> 'List of %s articles',
 	'or'				=> 'or',
 
 	'informations'			=> 'Information',
diff --git a/app/i18n/fr.php b/app/i18n/fr.php
index 9d745fc9a..cb327685f 100644
--- a/app/i18n/fr.php
+++ b/app/i18n/fr.php
@@ -138,9 +138,13 @@ return array (
 	'auto_share'			=> 'Partager',
 	'auto_share_help'		=> 'Si il n’y a qu’un mode de partage, celui ci est utilisé automatiquement. Sinon ils sont accessibles par leur numéro.',
 
-	'file_to_import'		=> 'Fichier à importer',
+	'file_to_import'		=> 'Fichier à importer (OPML)',
 	'import'			=> 'Importer',
 	'export'			=> 'Exporter',
+	'export_opml'			=> 'Exporter la liste des flux (OPML)',
+	'export_starred'		=> 'Exporter les favoris',
+	'starred_list'			=> 'Liste des articles favoris',
+	'feed_list'			=> 'Liste des articles de %s',
 	'or'				=> 'ou',
 
 	'informations'			=> 'Informations',
diff --git a/app/layout/aside_feed.phtml b/app/layout/aside_feed.phtml
index 7a5b2ce5e..aac15d741 100644
--- a/app/layout/aside_feed.phtml
+++ b/app/layout/aside_feed.phtml
@@ -49,7 +49,7 @@
 		</a>
 	</li>
 
-	<li class="item<?php echo Minz_Request::actionName () == 'importExport' ? ' active' : ''; ?>">
+	<li class="item<?php echo Minz_Request::controllerName () == 'importExport' ? ' active' : ''; ?>">
 		<a href="<?php echo _url ('importExport', 'index'); ?>"><?php echo Minz_Translate::t ('import_export'); ?></a>
 	</li>
 
@@ -62,7 +62,7 @@
 	<?php if (!empty ($this->feeds)) { ?>
 	<?php foreach ($this->feeds as $feed) { ?>
 	<?php $nbEntries = $feed->nbEntries (); ?>
-	<li class="item<?php echo ($this->flux && $this->flux->id () == $feed->id ()) ? ' active' : ''; ?><?php echo $feed->inError () ? ' error' : ''; ?><?php echo $nbEntries == 0 ? ' empty' : ''; ?>">
+	<li class="item<?php echo (isset($this->flux) && $this->flux->id () == $feed->id ()) ? ' active' : ''; ?><?php echo $feed->inError () ? ' error' : ''; ?><?php echo $nbEntries == 0 ? ' empty' : ''; ?>">
 		<a href="<?php echo _url ('configure', 'feed', 'id', $feed->id ()); ?>">
 			<img class="favicon" src="<?php echo $feed->favicon (); ?>" alt="✇" />
 			<?php echo $feed->name (); ?>
diff --git a/app/views/helpers/export/articles.phtml b/app/views/helpers/export/articles.phtml
index b7df58caf..ffdca1daa 100644
--- a/app/views/helpers/export/articles.phtml
+++ b/app/views/helpers/export/articles.phtml
@@ -1,30 +1,47 @@
 <?php
-    // TODO: A lot have to be done!
     $username = Minz_Session::param('currentUser', '_');
-    $type_id = "TODO";
-    $title = Minz_Translate::t("TODO");
-    $entries = [];
-?>{
-    "id": "user/<?php echo str_replace("\"", "", $username); ?>/state/org.freshrss/<?php echo $type_id; ?>",
-    "title": "<?php echo addslashes($title); ?>",
-    "author": "<?php echo addslashes($username); ?>",
-    "items": [
-        <?php $i = 0; foreach($entries as $entry) { $i++;
-        echo $i > 1 ? ', ': ''; ?>{
-            "id": "<?php echo $entry->id(); ?>",
-            "categories": [<?php /* TODO */ ?>],
-            "title": "<?php echo addslashes($entry->title()); ?>",
-            "published": <?php echo $entry->date(true); ?>,
-            "updated": <?php echo $entry->date(true); ?>,
-            "content": "<?php echo addslashes($entry->content()); ?>",
-            "origin": {
-                <?php /* TODO */ ?>
-                "streamId": "",
-                "title": "",
-                "htmlUrl": "",
-                "feedUrl": ""
-            }
+
+    $articles = array(
+        'id' => 'user/' . str_replace('/', '', $username) . '/state/org.freshrss/' . $this->type,
+        'title' => $this->list_title,
+        'author' => $username,
+        'items' => array()
+    );
+
+    foreach ($this->entries as $entry) {
+        if (!isset($this->feed)) {
+            $feed = FreshRSS_CategoryDAO::findFeed($this->categories, $entry->feed ());
+        } else {
+            $feed = $this->feed;
         }
-        <?php } ?>
-    ]
-}
\ No newline at end of file
+
+        $articles['items'][] = array(
+            'id' => $entry->guid(),
+            'categories' => array_values($entry->tags()),
+            'title' => $entry->title(),
+            'author' => $entry->author(),
+            'published' => $entry->date(true),
+            'updated' => $entry->date(true),
+            'alternate' => array(array(
+                'href' => $entry->link(),
+                'type' => 'text/html'
+            )),
+            'content' => array(
+                'content' => $entry->content()
+            ),
+            'origin' => array(
+                'streamId' => $feed->id(),
+                'title' => $feed->name(),
+                'htmlUrl' => $feed->website(),
+                'feedUrl' => $feed->url()
+            )
+        );
+    }
+
+    $options = 0;
+    if (version_compare(PHP_VERSION, '5.4.0') >= 0) {
+        $options = JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE;
+    }
+
+    echo json_encode($articles, $options);
+?>
diff --git a/app/views/helpers/export/opml.phtml b/app/views/helpers/export/opml.phtml
index 2e66e5054..f667d093c 100644
--- a/app/views/helpers/export/opml.phtml
+++ b/app/views/helpers/export/opml.phtml
@@ -1,15 +1,28 @@
 <?php
-require_once(LIB_PATH . '/lib_opml.php');
-
-echo '<?xml version="1.0" encoding="UTF-8" ?>';
-?>
-<!-- Generated by <?php echo Minz_Configuration::title (); ?> -->
-<opml version="2.0">
-	<head>
-		<title><?php echo Minz_Configuration::title (); ?> OPML Feed</title>
-		<dateCreated><?php echo date('D, d M Y H:i:s'); ?></dateCreated>
-	</head>
-	<body>
-<?php echo opml_export ($this->categories); ?>
-	</body>
-</opml>
+
+$opml_array = array(
+	'head' => array(
+		'title' => Minz_Configuration::title(),
+		'dateCreated' => date('D, d M Y H:i:s')
+	),
+	'body' => array()
+);
+
+foreach ($this->categories as $key => $cat) {
+	$opml_array['body'][$key] = array(
+		'text' => $cat['name'],
+		'@outlines' => array()
+	);
+
+	foreach ($cat['feeds'] as $feed) {
+		$opml_array['body'][$key]['@outlines'][] = array(
+			'text' => htmlspecialchars_decode($feed->name()),
+			'type' => 'rss',
+			'xmlUrl' => $feed->url(),
+			'htmlUrl' => $feed->website(),
+			'description' => $feed->description()
+		);
+	}
+}
+
+echo libopml_render($opml_array);
diff --git a/app/views/importExport/index.phtml b/app/views/importExport/index.phtml
index d8c76543e..309058959 100644
--- a/app/views/importExport/index.phtml
+++ b/app/views/importExport/index.phtml
@@ -19,6 +19,7 @@
 		</div>
 	</form>
 
+	<?php if (count($this->feeds) > 0) { ?>
 	<form method="post" action="<?php echo _url('importExport', 'export'); ?>">
 		<legend><?php echo Minz_Translate::t ('export'); ?></legend>
 		<div class="form-group">
@@ -33,11 +34,11 @@
 					<?php echo Minz_Translate::t ('export_starred'); ?>
 				</label>
 
-				<label class="checkbox" for="export_all">
-					<input type="checkbox" name="export_all" id="export_all" value="1" />
-					<?php echo Minz_Translate::t ('export_all'); ?>
-					<?php echo FreshRSS_Themes::icon('help'); ?> <?php echo Minz_Translate::t('export_all_is_long'); ?>
-				</label>
+				<select name="export_feeds[]" size="<?php echo min(10, count($this->feeds)); ?>" multiple="multiple">
+					<?php foreach ($this->feeds as $feed) { ?>
+					<option value="<?php echo $feed->id(); ?>"><?php echo $feed->name(); ?></option>
+					<?php } ?>
+				</select>
 			</div>
 		</div>
 
@@ -47,4 +48,5 @@
 			</div>
 		</div>
 	</form>
+	<?php } ?>
 </div>
diff --git a/lib/Minz/View.php b/lib/Minz/View.php
index 00d9a1a6d..f034ab10b 100644
--- a/lib/Minz/View.php
+++ b/lib/Minz/View.php
@@ -108,7 +108,7 @@ class Minz_View {
 	 */
 	public function helperToString($helper) {
 		ob_start();
-		renderHelper($helper);
+		$this->renderHelper($helper);
 		return ob_get_clean();
 	}
 
diff --git a/lib/lib_opml.php b/lib/lib_opml.php
index 05e54d85e..16a9921ea 100644
--- a/lib/lib_opml.php
+++ b/lib/lib_opml.php
@@ -1,23 +1,86 @@
 <?php
-function opml_export ($cats) {
-	$txt = '';
 
-	foreach ($cats as $cat) {
-		$txt .= '<outline text="' . $cat['name'] . '">' . "\n";
-
-		foreach ($cat['feeds'] as $feed) {
-			$txt .= "\t" . '<outline text="' . $feed->name () . '" type="rss" xmlUrl="' . $feed->url () . '" htmlUrl="' . $feed->website () . '" description="' . htmlspecialchars($feed->description(), ENT_COMPAT, 'UTF-8') . '" />' . "\n";
+/* *
+ * lib_opml is a free library to manage OPML format in PHP.
+ * It takes in consideration only version 2.0 (http://dev.opml.org/spec2.html).
+ * Basically it means "text" attribute for outline elements is required.
+ *
+ * lib_opml requires SimpleXML (http://php.net/manual/en/book.simplexml.php)
+ *
+ * Usages:
+ * > include('lib_opml.php');
+ * > $filename = 'my_opml_file.xml';
+ * > $opml_array = libopml_parse_file($filename);
+ * > print_r($opml_array);
+ *
+ * > $opml_string = [...];
+ * > $opml_array = libopml_parse_string($opml_string);
+ * > print_r($opml_array);
+ *
+ * > $opml_array = [...];
+ * > $opml_string = libopml_render($opml_array);
+ * > $opml_object = libopml_render($opml_array, true);
+ * > echo $opml_string;
+ * > print_r($opml_object);
+ *
+ * If parsing fails for any reason (e.g. not an XML string, does not match with
+ * the specifications), a LibOPML_Exception is raised.
+ *
+ * Author: Marien Fressinaud <dev@marienfressinaud.fr>
+ * Url: https://github.com/marienfressinaud/lib_opml
+ * Version: 0.1
+ * Date: 2014-03-29
+ * License: public domain
+ *
+ * */
+
+class LibOPML_Exception extends Exception {}
+
+
+// These elements are optional
+define('HEAD_ELEMENTS', serialize(array(
+	'title', 'dateCreated', 'dateModified', 'ownerName', 'ownerEmail',
+	'ownerId', 'docs', 'expansionState', 'vertScrollState', 'windowTop',
+	'windowLeft', 'windowBottom', 'windowRight'
+)));
+
+
+function libopml_parse_outline($outline_xml) {
+	$outline = array();
+
+	// An outline may contain any kind of attributes but "text" attribute is
+	// required !
+	$text_is_present = false;
+	foreach ($outline_xml->attributes() as $key => $value) {
+		$outline[$key] = (string)$value;
+
+		if ($key === 'text') {
+			$text_is_present = true;
 		}
+	}
 
-		$txt .= '</outline>' . "\n";
+	if (!$text_is_present) {
+		throw new LibOPML_Exception(
+			'Outline does not contain any text attribute'
+		);
 	}
 
-	return $txt;
+	foreach ($outline_xml->children() as $key => $value) {
+		// An outline may contain any number of outline children
+		if ($key === 'outline') {
+			$outline['@outlines'][] = libopml_parse_outline($value);
+		} else {
+			throw new LibOPML_Exception(
+				'Body can contain only outline elements'
+			);
+		}
+	}
+
+	return $outline;
 }
 
-function opml_import ($xml) {
-	$xml = html_only_entity_decode($xml);	//!\ Assume UTF-8
 
+function libopml_parse_string($xml) {
 	$dom = new DOMDocument();
 	$dom->recover = true;
 	$dom->strictErrorChecking = false;
@@ -27,94 +90,142 @@ function opml_import ($xml) {
 	$opml = simplexml_import_dom($dom);
 
 	if (!$opml) {
-		throw new FreshRSS_Opml_Exception ();
+		throw new LibOPML_Exception();
 	}
 
-	$catDAO = new FreshRSS_CategoryDAO();
-	$catDAO->checkDefault();
-	$defCat = $catDAO->getDefault();
+	$array = array(
+		'version' => (string)$opml['version'],
+		'head' => array(),
+		'body' => array()
+	);
+
+	// First, we get all "head" elements. Head is required but its sub-elements
+	// are optional.
+	foreach ($opml->head->children() as $key => $value) {
+		if (in_array($key, unserialize(HEAD_ELEMENTS), true)) {
+			$array['head'][$key] = (string)$value;
+		} else {
+			throw new LibOPML_Exception(
+				$key . 'is not part of OPML format'
+			);
+		}
+	}
 
-	$categories = array ();
-	$feeds = array ();
+	// Then, we get body oulines. Body must contain at least one outline
+	// element.
+	$at_least_one_outline = false;
+	foreach ($opml->body->children() as $key => $value) {
+		if ($key === 'outline') {
+			$at_least_one_outline = true;
+			$array['body'][] = libopml_parse_outline($value);
+		} else {
+			throw new LibOPML_Exception(
+				'Body can contain only outline elements'
+			);
+		}
+	}
+
+	if (!$at_least_one_outline) {
+		throw new LibOPML_Exception(
+			'Body must contain at least one outline element'
+		);
+	}
 
-	foreach ($opml->body->outline as $outline) {
-		if (!isset ($outline['xmlUrl'])) {
-			// Catégorie
-			$title = '';
+	return $array;
+}
 
-			if (isset ($outline['text'])) {
-				$title = (string) $outline['text'];
-			} elseif (isset ($outline['title'])) {
-				$title = (string) $outline['title'];
-			}
 
-			if ($title) {
-				// Permet d'éviter les soucis au niveau des id :
-				// ceux-ci sont générés en fonction de la date,
-				// un flux pourrait être dans une catégorie X avec l'id Y
-				// alors qu'il existe déjà la catégorie X mais avec l'id Z
-				// Y ne sera pas ajouté et le flux non plus vu que l'id
-				// de sa catégorie n'exisera pas
-				$title = htmlspecialchars($title, ENT_COMPAT, 'UTF-8');
-				$catDAO = new FreshRSS_CategoryDAO ();
-				$cat = $catDAO->searchByName ($title);
-				if ($cat == null) {
-					$cat = new FreshRSS_Category ($title);
-					$values = array (
-						'name' => $cat->name ()
-					);
-					$cat->_id ($catDAO->addCategory ($values));
-				}
-
-				$feeds = array_merge ($feeds, getFeedsOutline ($outline, $cat->id ()));
+function libopml_parse_file($filename) {
+	$file_content = file_get_contents($filename);
+
+	if ($file_content === false) {
+		throw new LibOPML_Exception(
+			$filename . ' cannot be found'
+		);
+	}
+
+	return libopml_parse_string($file_content);
+}
+
+
+function libopml_render_outline($parent_elt, $outline) {
+	// Outline MUST be an array!
+	if (!is_array($outline)) {
+		throw new LibOPML_Exception(
+			'Outline element must be defined as array'
+		);
+	}
+
+	$outline_elt = $parent_elt->addChild('outline');
+	$text_is_present = false;
+	foreach ($outline as $key => $value) {
+		// Only outlines can be an array and so we consider children are also
+		// outline elements.
+		if ($key === '@outlines' && is_array($value)) {
+			foreach ($value as $outline_child) {
+				libopml_render_outline($outline_elt, $outline_child);
 			}
+		} elseif (is_array($value)) {
+			throw new LibOPML_Exception(
+				'Type of outline elements cannot be array: ' . $key
+			);
 		} else {
-			// Flux rss sans catégorie, on récupère l'ajoute dans la catégorie par défaut
-			$feeds[] = getFeed ($outline, $defCat->id());
+			// Detect text attribute is present, that's good :)
+			if ($key === 'text') {
+				$text_is_present = true;
+			}
+
+			$outline_elt->addAttribute($key, $value);
 		}
 	}
 
-	return array ($categories, $feeds);
+	if (!$text_is_present) {
+		throw new LibOPML_Exception(
+			'You must define at least a text element for all outlines'
+		);
+	}
 }
 
-/**
- * import all feeds of a given outline tag
- */
-function getFeedsOutline ($outline, $cat_id) {
-	$feeds = array ();
 
-	foreach ($outline->children () as $child) {
-		if (isset ($child['xmlUrl'])) {
-			$feeds[] = getFeed ($child, $cat_id);
-		} else {
-			$feeds = array_merge(
-				$feeds,
-				getFeedsOutline ($child, $cat_id)
-			);
+function libopml_render($array, $as_xml_object = false) {
+	$opml = new SimpleXMLElement('<opml version="2.0"></opml>');
+
+	// Create head element. $array['head'] is optional but head element will
+	// exist in the final XML object.
+	$head = $opml->addChild('head');
+	if (isset($array['head'])) {
+		foreach ($array['head'] as $key => $value) {
+			if (in_array($key, unserialize(HEAD_ELEMENTS), true)) {
+				$head->addChild($key, $value);
+			}
 		}
 	}
 
-	return $feeds;
-}
+	// Check body is set and contains at least one element
+	if (!isset($array['body'])) {
+		throw new LibOPML_Exception(
+			'$array must contain a body element'
+		);
+	}
+	if (count($array['body']) <= 0) {
+		throw new LibOPML_Exception(
+			'Body element must contain at least one element (array)'
+		);
+	}
 
-function getFeed ($outline, $cat_id) {
-	$url = (string) $outline['xmlUrl'];
-	$url = htmlspecialchars($url, ENT_COMPAT, 'UTF-8');
-	$title = '';
-	if (isset ($outline['text'])) {
-		$title = (string) $outline['text'];
-	} elseif (isset ($outline['title'])) {
-		$title = (string) $outline['title'];
-	}
-	$title = htmlspecialchars($title, ENT_COMPAT, 'UTF-8');
-	$feed = new FreshRSS_Feed ($url);
-	$feed->_category ($cat_id);
-	$feed->_name ($title);
-	if (isset($outline['htmlUrl'])) {
-		$feed->_website(htmlspecialchars((string)$outline['htmlUrl'], ENT_COMPAT, 'UTF-8'));
-	}
-	if (isset($outline['description'])) {
-		$feed->_description(sanitizeHTML((string)$outline['description']));
-	}
-	return $feed;
+	// Create outline elements
+	$body = $opml->addChild('body');
+	foreach ($array['body'] as $outline) {
+		libopml_render_outline($body, $outline);
+	}
+
+	// And return the final result
+	if ($as_xml_object) {
+		return $opml;
+	} else {
+		$dom = dom_import_simplexml($opml)->ownerDocument;
+		$dom->formatOutput = true;
+		$dom->encoding = 'UTF-8';
+		return $dom->saveXML();
+	}
 }
diff --git a/lib/lib_rss.php b/lib/lib_rss.php
index 2077fe63f..0f8161129 100644
--- a/lib/lib_rss.php
+++ b/lib/lib_rss.php
@@ -244,3 +244,7 @@ function cryptAvailable() {
 	}
 	return false;
 }
+
+function html_chars_utf8($str) {
+	return htmlspecialchars($str, ENT_COMPAT, 'UTF-8');
+}