Current File : //www/varak.net/nextcloud.varak.net/nextcloud/3rdparty/fusonic/opengraph/src/Publisher.php
<?php
namespace Fusonic\OpenGraph;
use DateTimeInterface;
use Fusonic\OpenGraph\Objects\ObjectBase;
use UnexpectedValueException;
/**
* Class for generating Open Graph tags from objects.
*/
class Publisher
{
const DOCTYPE_HTML5 = 1;
const DOCTYPE_XHTML = 2;
/**
* Defines the style in which HTML tags should be written. Use one of Publisher::DOCTYPE_HTML5 or
* Publisher::DOCTYPE_XHTML.
*/
public int $doctype = self::DOCTYPE_HTML5;
public function __construct()
{
}
/**
* Generated HTML tags from the given object.
*/
public function generateHtml(ObjectBase $object): string
{
$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 DateTimeInterface) {
$value = $property->value->format("c");
} elseif (is_object($property->value)) {
throw new UnexpectedValueException(
sprintf(
"Cannot handle value of type '%s' for property '%s'.",
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;
}
}
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