Version 1

[yaffs-website] / vendor / easyrdf / easyrdf / lib / EasyRdf / Parser / JsonLdImplementation.php

diff --git a/vendor/easyrdf/easyrdf/lib/EasyRdf/Parser/JsonLdImplementation.php b/vendor/easyrdf/easyrdf/lib/EasyRdf/Parser/JsonLdImplementation.php
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+<?php
+
+/**
+ * EasyRdf
+ *
+ * LICENSE
+ *
+ * Copyright (c) 2009-2013 Nicholas J Humfrey.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ * 3. The name of the author 'Nicholas J Humfrey" may be used to endorse or
+ *    promote products derived from this software without specific prior
+ *    written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ * @package    EasyRdf
+ * @copyright  Copyright (c) 2009-2013 Nicholas J Humfrey
+ * @license    http://www.opensource.org/licenses/bsd-license.php
+ */
+
+/**
+ * Class to parse JSON-LD to an EasyRdf_Graph
+ *
+ * @package    EasyRdf
+ * @copyright  Copyright (c) 2014 Markus Lanthaler
+ * @author     Markus Lanthaler <mail@markus-lanthaler.com>
+ * @license    http://www.opensource.org/licenses/bsd-license.php
+ */
+class EasyRdf_Parser_JsonLd extends EasyRdf_Parser
+{
+    /**
+      * Parse a JSON-LD document into an EasyRdf_Graph
+      *
+      * Attention: Since JSON-LD supports datasets, a document may contain
+      * multiple graphs and not just one. This parser returns only the
+      * default graph. An alternative would be to merge all graphs.
+      *
+      * @param object EasyRdf_Graph $graph   the graph to load the data into
+      * @param string               $data    the RDF document data
+      * @param string               $format  the format of the input data
+      * @param string               $baseUri the base URI of the data being parsed
+      * @return integer             The number of triples added to the graph
+      */
+    public function parse($graph, $data, $format, $baseUri)
+    {
+        parent::checkParseParams($graph, $data, $format, $baseUri);
+
+        if ($format != 'jsonld') {
+            throw new EasyRdf_Exception(
+                "EasyRdf_Parser_JsonLd does not support $format"
+            );
+        }
+
+        try {
+            $quads = \ML\JsonLD\JsonLD::toRdf($data, array('base' => $baseUri));
+        } catch (\ML\JsonLD\Exception\JsonLdException $e) {
+            throw new EasyRdf_Parser_Exception($e->getMessage());
+        }
+
+        foreach ($quads as $quad) {
+            // Ignore named graphs
+            if (null !== $quad->getGraph()) {
+                continue;
+            }
+
+            $subject = (string) $quad->getSubject();
+            if ('_:' === substr($subject, 0, 2)) {
+                $subject = $this->remapBnode($subject);
+            }
+
+            $predicate = (string) $quad->getProperty();
+
+            if ($quad->getObject() instanceof \ML\IRI\IRI) {
+                $object = array(
+                    'type' => 'uri',
+                    'value' => (string) $quad->getObject()
+                );
+
+                if ('_:' === substr($object['value'], 0, 2)) {
+                    $object = array(
+                        'type' => 'bnode',
+                        'value' => $this->remapBnode($object['value'])
+                    );
+                }
+            } else {
+                $object = array(
+                    'type' => 'literal',
+                    'value' => $quad->getObject()->getValue()
+                );
+
+                if ($quad->getObject() instanceof \ML\JsonLD\LanguageTaggedString) {
+                    $object['lang'] = $quad->getObject()->getLanguage();
+                } else {
+                    $object['datatype'] = $quad->getObject()->getType();
+                }
+            }
+
+            $this->addTriple($subject, $predicate, $object);
+        }
+
+        return $this->tripleCount;
+    }
+}