Version 1

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

diff --git a/vendor/easyrdf/easyrdf/lib/EasyRdf/Parser.php b/vendor/easyrdf/easyrdf/lib/EasyRdf/Parser.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
+ */
+
+/**
+ * Parent class for the EasyRdf parsers
+ *
+ * @package    EasyRdf
+ * @copyright  Copyright (c) 2009-2013 Nicholas J Humfrey
+ * @license    http://www.opensource.org/licenses/bsd-license.php
+ */
+class EasyRdf_Parser
+{
+    /** Mapping from source to graph bnode identifiers */
+    private $bnodeMap = array();
+
+    /** The current graph to insert triples into */
+    protected $graph = null;
+
+    /** The format of the document currently being parsed */
+    protected $format = null;
+
+    /** The base URI for the document currently being parsed */
+    protected $baseUri = null;
+
+
+    protected $tripleCount = 0;
+
+    /**
+     * Create a new, unique bnode identifier from a source identifier.
+     * If the source identifier has previously been seen, the
+     * same new bnode identifier is returned.
+     * @ignore
+     */
+    protected function remapBnode($name)
+    {
+        if (!isset($this->bnodeMap[$name])) {
+            $this->bnodeMap[$name] = $this->graph->newBNodeId();
+        }
+        return $this->bnodeMap[$name];
+    }
+
+    /**
+     * Delete the bnode mapping - to be called at the start of a new parse
+     * @ignore
+     */
+    protected function resetBnodeMap()
+    {
+        $this->bnodeMap = array();
+    }
+
+    /**
+     * Check, cleanup parameters and prepare for parsing
+     * @ignore
+     */
+    protected function checkParseParams($graph, $data, $format, $baseUri)
+    {
+        if ($graph == null or !is_object($graph) or
+            !($graph instanceof EasyRdf_Graph)) {
+            throw new InvalidArgumentException(
+                "\$graph should be an EasyRdf_Graph object and cannot be null"
+            );
+        } else {
+            $this->graph = $graph;
+        }
+
+        if ($format == null or $format == '') {
+            throw new InvalidArgumentException(
+                "\$format cannot be null or empty"
+            );
+        } elseif (is_object($format) and $format instanceof EasyRdf_Format) {
+            $this->format = $format = $format->getName();
+        } elseif (!is_string($format)) {
+            throw new InvalidArgumentException(
+                "\$format should be a string or an EasyRdf_Format object"
+            );
+        } else {
+            $this->format = $format;
+        }
+
+        if ($baseUri) {
+            if (!is_string($baseUri)) {
+                throw new InvalidArgumentException(
+                    "\$baseUri should be a string"
+                );
+            } else {
+                $this->baseUri = new EasyRdf_ParsedUri($baseUri);
+            }
+        } else {
+            $this->baseUri = null;
+        }
+
+        // Prepare for parsing
+        $this->resetBnodeMap();
+        $this->tripleCount = 0;
+    }
+
+    /**
+     * Sub-classes must follow this protocol
+     * @ignore
+     */
+    public function parse($graph, $data, $format, $baseUri)
+    {
+        throw new EasyRdf_Exception(
+            "This method should be overridden by sub-classes."
+        );
+    }
+
+    /**
+     * Add a triple to the current graph, and keep count of the number of triples
+     * @ignore
+     */
+    protected function addTriple($resource, $property, $value)
+    {
+        $count = $this->graph->add($resource, $property, $value);
+        $this->tripleCount += $count;
+        return $count;
+    }
+}