/** Get a list of types for a resource
*
* The types will each be a shortened URI as a string.
* This method will return an empty array if the resource has no types.
*
* If $resource is null, then it will get the types for the URI of the graph.
*
* @param string|null $resource
*
* @return array All types assocated with the resource (e.g. foaf:Person)
*/
public function types($resource = null)
{
$resources = $this->typesAsResources($resource);
$types = array();
foreach ($resources as $type) {
$types[] = RdfNamespace::shorten($type);
}
return $types;
}
/** Get a shortened version of the resources URI.
*
* This method will return the full URI if the resource isn't part of any
* registered namespace.
*
* @return string The shortened URI of this resource (e.g. foaf:name)
*/
public function shorten()
{
return RdfNamespace::shorten($this->uri);
}
/** Return pretty-print view of a literal
*
* This method is mainly intended for internal use and is used by
* EasyRdf\Graph and EasyRdf\Sparql\Result to format a literal
* for display.
*
* @param mixed $literal An EasyRdf\Literal object or an associative array
* @param string $format Either 'html' or 'text'
* @param string $color The colour of the text
*
* @throws \InvalidArgumentException
* @return string
*/
public static function dumpLiteralValue($literal, $format = 'html', $color = 'black')
{
if (!preg_match('/^#?[-\\w]+$/', $color)) {
throw new \InvalidArgumentException("\$color must be a legal color code or name");
}
if (is_object($literal)) {
$literal = $literal->toRdfPhp();
} elseif (!is_array($literal)) {
$literal = array('value' => $literal);
}
$text = '"' . $literal['value'] . '"';
if (isset($literal['lang'])) {
$text .= '@' . $literal['lang'];
}
if (isset($literal['datatype'])) {
$short = RdfNamespace::shorten($literal['datatype']);
if ($short) {
$text .= "^^{$short}";
} else {
$text .= "^^<" . $literal['datatype'] . ">";
}
}
if ($format == 'html') {
return "<span style='color:{$color}'>" . htmlentities($text, ENT_COMPAT, "UTF-8") . "</span>";
} else {
return $text;
}
}
/** Returns the shortened datatype URI of the literal.
*
* @return string Datatype of this literal (e.g. xsd:integer).
*/
public function getDatatype()
{
if ($this->datatype) {
return RdfNamespace::shorten($this->datatype);
} else {
return null;
}
}
