Support for OPML 2.0 category attribute

https://github.com/FreshRSS/FreshRSS/issues/1202

4 files changed, 34 insertions, 1 deletions

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 601bc9d4b..017bd6e1a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -16,12 +16,14 @@
 	* Fixed scroll in log view [#1178](https://github.com/FreshRSS/FreshRSS/issues/1178)
 	* Fixed JavaScript bug when articles were not always marked as read [#1123](https://github.com/FreshRSS/FreshRSS/issues/1123)
 	* Fixed Apache Etag issue that prevented caching [#1199](https://github.com/FreshRSS/FreshRSS/pull/1199)
+	* Fixed OPML import of categories [#1202](https://github.com/FreshRSS/FreshRSS/issues/1202)
 * UI
 	* Updated to jQuery 3.1.0 and several JavaScript fixes (e.g. drag & drop) [#1197](https://github.com/FreshRSS/FreshRSS/pull/1197)
 * API
 	* Add API link in FreshRSS profile settings to ease set-up [#1186](https://github.com/FreshRSS/FreshRSS/pull/1186)
 * Mics.
 	* JSHint of JavaScript code and better initialisation [#1196](https://github.com/FreshRSS/FreshRSS/pull/1196)
+	* Updated credits, and images in README [#1201](https://github.com/FreshRSS/FreshRSS/issues/1201)
 
 
 ## 2016-07-23 FreshRSS 1.4.0
diff --git a/README.fr.md b/README.fr.md
index a53653286..8324b9657 100644
--- a/README.fr.md
+++ b/README.fr.md
@@ -125,6 +125,7 @@ mysqldump -u utilisateur -p --databases freshrss > freshrss.sql
 * [php-http-304](http://alexandre.alapetite.fr/doc-alex/php-http-304/)
 * [jQuery](http://jquery.com/)
 * [ArthurHoaro/favicon](https://github.com/ArthurHoaro/favicon)
+* [lib_opml](https://github.com/marienfressinaud/lib_opml)
 * [keyboard_shortcuts](http://www.openjs.com/scripts/events/keyboard_shortcuts/)
 * [flotr2](http://www.humblesoftware.com/flotr2)
 
diff --git a/README.md b/README.md
index 1c9f89c78..844967f4f 100644
--- a/README.md
+++ b/README.md
@@ -125,6 +125,7 @@ mysqldump -u user -p --databases freshrss > freshrss.sql
 * [php-http-304](http://alexandre.alapetite.fr/doc-alex/php-http-304/)
 * [jQuery](http://jquery.com/)
 * [ArthurHoaro/favicon](https://github.com/ArthurHoaro/favicon)
+* [lib_opml](https://github.com/marienfressinaud/lib_opml)
 * [keyboard_shortcuts](http://www.openjs.com/scripts/events/keyboard_shortcuts/)
 * [flotr2](http://www.humblesoftware.com/flotr2)
 
diff --git a/lib/lib_opml.php b/lib/lib_opml.php
index 66b854313..0414868fb 100644
--- a/lib/lib_opml.php
+++ b/lib/lib_opml.php
@@ -12,7 +12,7 @@
  *
  * @author   Marien Fressinaud <dev@marienfressinaud.fr>
  * @link     https://github.com/marienfressinaud/lib_opml
- * @version  0.2
+ * @version  0.2-FreshRSS~1.5.1
  * @license  public domain
  *
  * Usages:
@@ -123,6 +123,32 @@ function libopml_parse_outline($outline_xml, $strict = true) {
 	return $outline;
 }
 
+/**
+ * Reformat the XML document as a hierarchy when
+ * the OPML 2.0 category attribute is used
+ */
+function preprocessing_categories($doc) {
+	$outline_categories = [];
+	$body = $doc->getElementsByTagName('body')->item(0);
+	$xpath = new DOMXpath($doc);
+	$outlines = $xpath->query("/opml/body/outline[@category]");
+	foreach ($outlines as $outline) {
+		$category = trim($outline->getAttribute('category'));
+		if ($category != '') {
+			$outline_categorie = null;
+			if (!isset($outline_categories[$category])) {
+				$outline_categorie = $doc->createElement('outline');
+				$outline_categorie->setAttribute('text', $category);
+				$body->insertBefore($outline_categorie, $body->firstChild);
+				$outline_categories[$category] = $outline_categorie;
+			} else {
+				$outline_categorie = $outline_categories[$category];
+			}
+			$outline->parentNode->removeChild($outline);
+			$outline_categorie->appendChild($outline);
+		}
+	}
+}
 
 /**
  * Parse a string as a XML one and returns the corresponding array
@@ -140,6 +166,9 @@ function libopml_parse_string($xml, $strict = true) {
 	$dom->loadXML($xml);
 	$dom->encoding = 'UTF-8';
 
+	//Partial compatibility with the category attribute of OPML 2.0
+	preprocessing_categories($dom);
+
 	$opml = simplexml_import_dom($dom);
 
 	if (!$opml) {