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<?php
/**
* @link http://www.yiiframework.com/
* @copyright Copyright (c) 2008 Yii Software LLC
* @license http://www.yiiframework.com/license/
*/
namespace yii\httpclient;
use DOMDocument;
use DOMElement;
use DOMText;
use SimpleXMLElement;
use yii\base\Arrayable;
use yii\base\BaseObject;
use Yii;
use yii\helpers\StringHelper;
/**
* XmlFormatter formats HTTP message as XML.
*
* @author Paul Klimov <klimov.paul@gmail.com>
* @since 2.0
*/
class XmlFormatter extends BaseObject implements FormatterInterface
{
/**
* @var string the Content-Type header for the response
*/
public $contentType = 'application/xml';
/**
* @var string the XML version
*/
public $version = '1.0';
/**
* @var string the XML encoding. If not set, it will use the value of [[\yii\base\Application::charset]].
*/
public $encoding;
/**
* @var string the name of the root element.
*/
public $rootTag = 'request';
/**
* @var string the name of the elements that represent the array elements with numeric keys.
* @since 2.0.1
*/
public $itemTag = 'item';
/**
* @var bool whether to interpret objects implementing the [[\Traversable]] interface as arrays.
* Defaults to `true`.
* @since 2.0.1
*/
public $useTraversableAsArray = true;
/**
* {@inheritdoc}
*/
public function format(Request $request)
{
$contentType = $this->contentType;
$charset = $this->encoding === null ? Yii::$app->charset : $this->encoding;
if (stripos($contentType, 'charset') === false) {
$contentType .= '; charset=' . $charset;
}
$request->getHeaders()->set('Content-Type', $contentType);
$data = $request->getData();
if ($data !== null) {
if ($data instanceof DOMDocument) {
$content = $data->saveXML();
} elseif ($data instanceof SimpleXMLElement) {
$content = $data->saveXML();
} else {
$dom = new DOMDocument($this->version, $charset);
$root = new DOMElement($this->rootTag);
$dom->appendChild($root);
$this->buildXml($root, $data);
$content = $dom->saveXML();
}
$request->setContent($content);
}
return $request;
}
/**
* @param DOMElement $element
* @param mixed $data
*/
protected function buildXml($element, $data)
{
if (is_array($data) ||
($data instanceof \Traversable && $this->useTraversableAsArray && !$data instanceof Arrayable)
) {
foreach ($data as $name => $value) {
if (is_int($name) && is_object($value)) {
$this->buildXml($element, $value);
} elseif (is_array($value) || is_object($value)) {
$child = new DOMElement(is_int($name) ? $this->itemTag : $name);
$element->appendChild($child);
$this->buildXml($child, $value);
} else {
$child = new DOMElement(is_int($name) ? $this->itemTag : $name);
$element->appendChild($child);
$child->appendChild(new DOMText((string) $value));
}
}
} elseif (is_object($data)) {
$child = new DOMElement(StringHelper::basename(get_class($data)));
$element->appendChild($child);
if ($data instanceof Arrayable) {
$this->buildXml($child, $data->toArray());
} else {
$array = [];
foreach ($data as $name => $value) {
$array[$name] = $value;
}
$this->buildXml($child, $array);
}
} else {
$element->appendChild(new DOMText((string) $data));
}
}
}