X-Git-Url: https://git.mxchange.org/?a=blobdiff_plain;f=src%2FUtil%2FJsonLD.php;h=ddf8d93533ea121508dae2bfdace65f854c4edf5;hb=dc49ad090eca1bf4e511091418166da6fe68009b;hp=e8ff5888dea15d5a0463aedabc69f650d8ad0ce8;hpb=34cb0aa406969967fa521211116564805ef6b631;p=friendica.git

diff --git a/src/Util/JsonLD.php b/src/Util/JsonLD.php
index e8ff5888de..ddf8d93533 100644
--- a/src/Util/JsonLD.php
+++ b/src/Util/JsonLD.php
@@ -5,13 +5,20 @@
 namespace Friendica\Util;
 
 use Friendica\Core\Cache;
-use digitalbazaar\jsonld as DBJsonLD;
+use Exception;
 
 /**
  * @brief This class contain methods to work with JsonLD data
  */
 class JsonLD
 {
+	/**
+	 * @brief Loader for LD-JSON validation
+	 *
+	 * @param $url
+	 *
+	 * @return the loaded data
+	 */
 	public static function documentLoader($url)
 	{
 		$recursion = 0;
@@ -40,15 +47,37 @@ class JsonLD
 		return $data;
 	}
 
+	/**
+	 * @brief Normalises a given JSON array
+	 *
+	 * @param array $json
+	 *
+	 * @return normalized JSON string
+	 */
 	public static function normalize($json)
 	{
 		jsonld_set_document_loader('Friendica\Util\JsonLD::documentLoader');
 
-		$jsonobj = json_decode(json_encode($json));
+		$jsonobj = json_decode(json_encode($json, JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE));
 
-		return jsonld_normalize($jsonobj, array('algorithm' => 'URDNA2015', 'format' => 'application/nquads'));
+		try {
+			$normalized = jsonld_normalize($jsonobj, array('algorithm' => 'URDNA2015', 'format' => 'application/nquads'));
+		}
+		catch (Exception $e) {
+			$normalized = false;
+			logger('normalise error:' . print_r($e, true), LOGGER_DEBUG);
+		}
+
+		return $normalized;
 	}
 
+	/**
+	 * @brief Compacts a given JSON array
+	 *
+	 * @param array $json
+	 *
+	 * @return comacted JSON array
+	 */
 	public static function compact($json)
 	{
 		jsonld_set_document_loader('Friendica\Util\JsonLD::documentLoader');
@@ -59,10 +88,56 @@ class JsonLD
 			'vcard' => (object)['@id' => 'http://www.w3.org/2006/vcard/ns#', '@type' => '@id'],
 			'uuid' => (object)['@id' => 'http://schema.org/identifier', '@type' => '@id']];
 
-		$jsonobj = json_decode(json_encode($json));
+		$jsonobj = json_decode(json_encode($json, JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE));
 
 		$compacted = jsonld_compact($jsonobj, $context);
 
-		return json_decode(json_encode($compacted), true);
+		return json_decode(json_encode($compacted, JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE), true);
+	}
+
+	/**
+	 * @brief Fetches an element from a JSON array
+	 *
+	 * @param $array
+	 * @param $element
+	 * @param $key
+	 * @param $type
+	 * @param $type_value
+	 *
+	 * @return fetched element
+	 */
+	public static function fetchElement($array, $element, $key, $type = null, $type_value = null)
+	{
+		if (empty($array)) {
+			return false;
+		}
+
+		if (empty($array[$element])) {
+			return false;
+		}
+
+		if (is_string($array[$element])) {
+			return $array[$element];
+		}
+
+		if (is_null($type_value)) {
+			if (!empty($array[$element][$key])) {
+				return $array[$element][$key];
+			}
+
+			if (!empty($array[$element][0][$key])) {
+				return $array[$element][0][$key];
+			}
+
+			return false;
+		}
+
+		if (!empty($array[$element][$key]) && !empty($array[$element][$type]) && ($array[$element][$type] == $type_value)) {
+			return $array[$element][$key];
+		}
+
+		/// @todo Add array search
+
+		return false;
 	}
 }