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<?php
declare(strict_types=1);
namespace Sabre\DAV\Xml\Property;
use Sabre\DAV\Browser\HtmlOutput;
use Sabre\DAV\Browser\HtmlOutputHelper;
use Sabre\Uri;
use Sabre\Xml\Element;
use Sabre\Xml\Reader;
use Sabre\Xml\Writer;
/**
* Href property.
*
* This class represents any WebDAV property that contains a {DAV:}href
* element, and there are many.
*
* It can support either 1 or more hrefs. If while unserializing no valid
* {DAV:}href elements were found, this property will unserialize itself as
* null.
*
* @copyright Copyright (C) fruux GmbH (https://fruux.com/)
* @author Evert Pot (http://www.rooftopsolutions.nl/)
* @license http://sabre.io/license/ Modified BSD License
*/
class Href implements Element, HtmlOutput
{
/**
* List of uris.
*
* @var array
*/
protected $hrefs;
/**
* Automatically prefix the url with the server base directory.
* Note: use of this property in code was removed in PR:
* https://github.com/sabre-io/dav/pull/801
* But the property is left here because old data may still exist
* that has this property saved.
* See discussion in issue:
* https://github.com/sabre-io/Baikal/issues/1154.
*
* @var bool
*/
protected $autoPrefix = true;
/**
* Constructor.
*
* You must either pass a string for a single href, or an array of hrefs.
*
* @param string|string[] $hrefs
*/
public function __construct($hrefs)
{
if (is_string($hrefs)) {
$hrefs = [$hrefs];
}
$this->hrefs = $hrefs;
}
/**
* Returns the first Href.
*
* @return string|null
*/
public function getHref()
{
return $this->hrefs[0] ?? null;
}
/**
* Returns the hrefs as an array.
*
* @return array
*/
public function getHrefs()
{
return $this->hrefs;
}
/**
* The xmlSerialize method is called during xml writing.
*
* Use the $writer argument to write its own xml serialization.
*
* An important note: do _not_ create a parent element. Any element
* implementing XmlSerializable should only ever write what's considered
* its 'inner xml'.
*
* The parent of the current element is responsible for writing a
* containing element.
*
* This allows serializers to be re-used for different element names.
*
* If you are opening new elements, you must also close them again.
*/
public function xmlSerialize(Writer $writer)
{
foreach ($this->getHrefs() as $href) {
$href = Uri\resolve($writer->contextUri, $href);
$writer->writeElement('{DAV:}href', $href);
}
}
/**
* Generate html representation for this value.
*
* The html output is 100% trusted, and no effort is being made to sanitize
* it. It's up to the implementor to sanitize user provided values.
*
* The output must be in UTF-8.
*
* The baseUri parameter is a url to the root of the application, and can
* be used to construct local links.
*
* @return string
*/
public function toHtml(HtmlOutputHelper $html)
{
$links = [];
foreach ($this->getHrefs() as $href) {
$links[] = $html->link($href);
}
return implode('<br />', $links);
}
/**
* The deserialize method is called during xml parsing.
*
* This method is called statically, this is because in theory this method
* may be used as a type of constructor, or factory method.
*
* Often you want to return an instance of the current class, but you are
* free to return other data as well.
*
* You are responsible for advancing the reader to the next element. Not
* doing anything will result in a never-ending loop.
*
* If you just want to skip parsing for this element altogether, you can
* just call $reader->next();
*
* $reader->parseInnerTree() will parse the entire sub-tree, and advance to
* the next element.
*
* @return mixed
*/
public static function xmlDeserialize(Reader $reader)
{
$hrefs = [];
foreach ((array) $reader->parseInnerTree() as $elem) {
if ('{DAV:}href' !== $elem['name']) {
continue;
}
$hrefs[] = $elem['value'];
}
if ($hrefs) {
return new self($hrefs);
}
}
}
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