8 * Copyright (c) 2009-2013 Nicholas J Humfrey. All rights reserved.
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions are met:
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright notice,
15 * this list of conditions and the following disclaimer in the documentation
16 * and/or other materials provided with the distribution.
17 * 3. The name of the author 'Nicholas J Humfrey" may be used to endorse or
18 * promote products derived from this software without specific prior
21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
22 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
25 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
31 * POSSIBILITY OF SUCH DAMAGE.
34 * @copyright Copyright (c) 2009-2013 Nicholas J Humfrey
35 * @license http://www.opensource.org/licenses/bsd-license.php
39 * Class to parse RDF using the 'rapper' command line tool.
42 * @copyright Copyright (c) 2009-2013 Nicholas J Humfrey
43 * @license http://www.opensource.org/licenses/bsd-license.php
45 class EasyRdf_Parser_Rapper extends EasyRdf_Parser_Json
47 private $rapperCmd = null;
49 const MINIMUM_RAPPER_VERSION = '1.4.17';
54 * @param string $rapperCmd Optional path to the rapper command to use.
55 * @return object EasyRdf_Parser_Rapper
57 public function __construct($rapperCmd = 'rapper')
59 $result = exec("$rapperCmd --version 2>/dev/null", $output, $status);
61 throw new EasyRdf_Exception(
62 "Failed to execute the command '$rapperCmd': $result"
64 } elseif (version_compare($result, self::MINIMUM_RAPPER_VERSION) < 0) {
65 throw new EasyRdf_Exception(
66 "Version ".self::MINIMUM_RAPPER_VERSION." or higher of rapper is required."
69 $this->rapperCmd = $rapperCmd;
74 * Parse an RDF document into an EasyRdf_Graph
76 * @param object EasyRdf_Graph $graph the graph to load the data into
77 * @param string $data the RDF document data
78 * @param string $format the format of the input data
79 * @param string $baseUri the base URI of the data being parsed
80 * @return integer The number of triples added to the graph
82 public function parse($graph, $data, $format, $baseUri)
84 parent::checkParseParams($graph, $data, $format, $baseUri);
86 $json = EasyRdf_Utils::execCommandPipe(
93 '--input-uri', $baseUri,
94 '--output-uri', '-', '-'
100 return parent::parse($graph, $json, 'json', $baseUri);