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<?php
namespace EasyRdf\Parser;
/**
* EasyRdf
*
* LICENSE
*
* Copyright (c) 2009-2014 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) 2009-2014 Nicholas J Humfrey
* @license https://www.opensource.org/licenses/bsd-license.php
*/
/**
* Class to parse RDF using the ARC2 library.
*
* @package EasyRdf
* @copyright Copyright (c) 2009-2014 Nicholas J Humfrey
* @license https://www.opensource.org/licenses/bsd-license.php
*/
class Arc extends RdfPhp
{
private static $supportedTypes = array(
'rdfxml' => 'RDFXML',
'turtle' => 'Turtle',
'ntriples' => 'Turtle',
'rdfa' => 'SemHTML',
);
/**
* Constructor
*/
public function __construct()
{
if (!class_exists('ARC2')) {
throw new \EasyRdf\Exception('ARC2 dependency is not installed');
}
}
/**
* Parse an RDF document into an EasyRdf\Graph
*
* @param 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 $baseUri the base URI of the data being parsed
*
* @throws \EasyRdf\Exception
* @return integer The number of triples added to the graph
*/
public function parse($graph, $data, $format, $baseUri)
{
parent::checkParseParams($graph, $data, $format, $baseUri);
if (array_key_exists($format, self::$supportedTypes)) {
$className = self::$supportedTypes[$format];
} else {
throw new \EasyRdf\Exception(
"EasyRdf\\Parser\\Arc does not support: {$format}"
);
}
$parser = \ARC2::getParser($className);
if ($parser) {
$parser->parse($baseUri, $data);
$rdfphp = $parser->getSimpleIndex(false);
return parent::parse($graph, $rdfphp, 'php', $baseUri);
} else {
throw new \EasyRdf\Exception(
"ARC2 failed to get a $className parser."
);
}
}
}
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