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| <?php | |
| /** | |
| * Convert RDF from one format to another | |
| * | |
| * The source RDF data can either be fetched from the web | |
| * or typed into the Input box. | |
| * | |
| * The first thing that this script does is make a list the names of the | |
| * supported input and output formats. These options are then | |
| * displayed on the HTML form. | |
| * | |
| * The input data is loaded or parsed into an EasyRdf\Graph. | |
| * That graph is than outputted again in the desired output format. | |
| * | |
| * @package EasyRdf | |
| * @copyright Copyright (c) 2009-2020 Nicholas J Humfrey | |
| * @license http://unlicense.org/ | |
| */ | |
| require_once realpath(__DIR__.'/..')."/vendor/autoload.php"; | |
| require_once __DIR__."/html_tag_helpers.php"; | |
| $input_format_options = array('Guess' => 'guess'); | |
| $output_format_options = array(); | |
| foreach (\EasyRdf\Format::getFormats() as $format) { | |
| if ($format->getSerialiserClass()) { | |
| $output_format_options[$format->getLabel()] = $format->getName(); | |
| } | |
| if ($format->getParserClass()) { | |
| $input_format_options[$format->getLabel()] = $format->getName(); | |
| } | |
| } | |
| // Stupid PHP :( | |
| if (get_magic_quotes_gpc() and isset($_REQUEST['data'])) { | |
| $_REQUEST['data'] = stripslashes($_REQUEST['data']); | |
| } | |
| // Default to Guess input and Turtle output | |
| if (!isset($_REQUEST['output_format'])) { | |
| $_REQUEST['output_format'] = 'turtle'; | |
| } | |
| if (!isset($_REQUEST['input_format'])) { | |
| $_REQUEST['input_format'] = 'guess'; | |
| } | |
| // Display the form, if raw option isn't set | |
| if (!isset($_REQUEST['raw'])) { | |
| print "<html>\n"; | |
| print "<head><title>EasyRdf Converter</title></head>\n"; | |
| print "<body>\n"; | |
| print "<h1>EasyRdf Converter</h1>\n"; | |
| print "<div style='margin: 10px'>\n"; | |
| print form_tag(); | |
| print label_tag('data', 'Input Data: ').'<br />'.text_area_tag('data', '', array('cols'=>80, 'rows'=>10)) . "<br />\n"; | |
| print label_tag('uri', 'or Uri: ').text_field_tag('uri', 'http://danbri.org/foaf.rdf#danbri', array('size'=>80)) . "<br />\n"; | |
| print label_tag('input_format', 'Input Format: ').select_tag('input_format', $input_format_options) . "<br />\n"; | |
| print label_tag('output_format', 'Output Format: ').select_tag('output_format', $output_format_options) . "<br />\n"; | |
| print label_tag('raw', 'Raw Output: ').check_box_tag('raw') . "<br />\n"; | |
| print reset_tag() . submit_tag(); | |
| print form_end_tag(); | |
| print "</div>\n"; | |
| } | |
| if (isset($_REQUEST['uri']) or isset($_REQUEST['data'])) { | |
| // Parse the input | |
| $graph = new \EasyRdf\Graph($_REQUEST['uri']); | |
| if (empty($_REQUEST['data'])) { | |
| $graph->load($_REQUEST['uri'], $_REQUEST['input_format']); | |
| } else { | |
| $graph->parse($_REQUEST['data'], $_REQUEST['input_format'], $_REQUEST['uri']); | |
| } | |
| // Lookup the output format | |
| $format = \EasyRdf\Format::getFormat($_REQUEST['output_format']); | |
| // Serialise to the new output format | |
| $output = $graph->serialise($format); | |
| if (!is_scalar($output)) { | |
| $output = var_export($output, true); | |
| } | |
| // Send the output back to the client | |
| if (isset($_REQUEST['raw'])) { | |
| header('Content-Type: '.$format->getDefaultMimeType()); | |
| print $output; | |
| } else { | |
| print '<pre>'.htmlspecialchars($output).'</pre>'; | |
| } | |
| } | |
| if (!isset($_REQUEST['raw'])) { | |
| print "</body>\n"; | |
| print "</html>\n"; | |
| } |