public function generateHtml(ObjectBase $object)
{
$html = "";
$format = "<meta property=\"%s\" content=\"%s\"" . ($this->doctype == self::DOCTYPE_XHTML ? " />" : ">");
foreach ($object->getProperties() as $property) {
if ($html !== "") {
$html .= "\n";
}
if ($property->value === null) {
continue;
} elseif ($property->value instanceof \DateTime) {
$value = $property->value->format("c");
} elseif (is_object($property->value)) {
throw new \UnexpectedValueException(sprintf("Cannot handle value of type '%0' for property '%1'.", get_class($property->value), $property->key));
} elseif ($property->value === true) {
$value = "1";
} elseif ($property->value === false) {
$value = "0";
} else {
$value = (string) $property->value;
}
$html .= sprintf($format, $property->key, htmlspecialchars($value));
}
return $html;
}
public function __construct($value)
{
parent::__construct();
$this->value = $value;
}