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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 RDF with no external dependancies.
*
* http://n2.talis.com/wiki/RDF_PHP_Specification
* docs/appendix-a-rdf-formats-php.md
*
* @package EasyRdf
* @copyright Copyright (c) 2009-2013 Nicholas J Humfrey
* @license http://www.opensource.org/licenses/bsd-license.php
*/
class EasyRdf_Parser_RdfPhp extends EasyRdf_Parser
{
/**
* Constructor
*
* @return object EasyRdf_Parser_RdfPhp
*/
public function __construct()
{
}
/**
* Parse RDF/PHP into an EasyRdf_Graph
*
* @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)
{
$this->checkParseParams($graph, $data, $format, $baseUri);
if ($format != 'php') {
throw new EasyRdf_Exception(
"EasyRdf_Parser_RdfPhp does not support: $format"
);
}
foreach ($data as $subject => $properties) {
if (substr($subject, 0, 2) === '_:') {
$subject = $this->remapBnode($subject);
} elseif (preg_match('/^\w+$/', $subject)) {
# Cope with invalid RDF/JSON serialisations that
# put the node name in, without the _: prefix
# (such as net.fortytwo.sesametools.rdfjson)
$subject = $this->remapBnode($subject);
}
foreach ($properties as $property => $objects) {
foreach ($objects as $object) {
if ($object['type'] === 'bnode') {
$object['value'] = $this->remapBnode($object['value']);
}
$this->addTriple($subject, $property, $object);
}
}
}
return $this->tripleCount;
}
}