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<?php
namespace Codeception\Util;
/**
* That's a pretty simple yet powerful class to build XML structures in jQuery-like style.
* With no XML line actually written!
* Uses DOM extension to manipulate XML data.
*
*
* ```php
* <?php
* $xml = new \Codeception\Util\XmlBuilder();
* $xml->users
* ->user
* ->val(1)
* ->email
* ->val('davert@mail.ua')
* ->attr('valid','true')
* ->parent()
* ->cart
* ->attr('empty','false')
* ->items
* ->item
* ->val('useful item');
* ->parents('user')
* ->active
* ->val(1);
* echo $xml;
* ```
*
* This will produce this XML
*
* ```xml
* <?xml version="1.0"?>
* <users>
* <user>
* 1
* <email valid="true">davert@mail.ua</email>
* <cart empty="false">
* <items>
* <item>useful item</item>
* </items>
* </cart>
* <active>1</active>
* </user>
* </users>
* ```
*
* ### Usage
*
* Builder uses chained calls. So each call to builder returns a builder object.
* Except for `getDom` and `__toString` methods.
*
* * `$xml->node` - create new xml node and go inside of it.
* * `$xml->node->val('value')` - sets the inner value of node
* * `$xml->attr('name','value')` - set the attribute of node
* * `$xml->parent()` - go back to parent node.
* * `$xml->parents('user')` - go back through all parents to `user` node.
*
* Export:
*
* * `$xml->getDom` - get a DOMDocument object
* * `$xml->__toString` - get a string representation of XML.
*
* [Source code](https://github.com/Codeception/Codeception/blob/4.0/src/Codeception/Util/XmlBuilder.php)
*/
class XmlBuilder
{
/**
* @var \DOMDocument
*/
protected $__dom__;
/**
* @var \DOMElement
*/
protected $__currentNode__;
public function __construct()
{
$this->__dom__ = new \DOMDocument();
$this->__currentNode__ = $this->__dom__;
}
/**
* Appends child node
*
* @param $tag
*
* @return XmlBuilder
*/
public function __get($tag)
{
$node = $this->__dom__->createElement($tag);
$this->__currentNode__->appendChild($node);
$this->__currentNode__ = $node;
return $this;
}
/**
* @param $val
*
* @return XmlBuilder
*/
public function val($val)
{
$this->__currentNode__->nodeValue = $val;
return $this;
}
/**
* Sets attribute for current node
*
* @param $attr
* @param $val
*
* @return XmlBuilder
*/
public function attr($attr, $val)
{
$this->__currentNode__->setAttribute($attr, $val);
return $this;
}
/**
* Traverses to parent
*
* @return XmlBuilder
*/
public function parent()
{
$this->__currentNode__ = $this->__currentNode__->parentNode;
return $this;
}
/**
* Traverses to parent with $name
*
* @param $tag
*
* @return XmlBuilder
* @throws \Exception
*/
public function parents($tag)
{
$traverseNode = $this->__currentNode__;
$elFound = false;
while ($traverseNode->parentNode) {
$traverseNode = $traverseNode->parentNode;
if ($traverseNode->tagName == $tag) {
$this->__currentNode__ = $traverseNode;
$elFound = true;
break;
}
}
if (!$elFound) {
throw new \Exception("Parent $tag not found in XML");
}
return $this;
}
public function __toString()
{
return $this->__dom__->saveXML();
}
/**
* @return \DOMDocument
*/
public function getDom()
{
return $this->__dom__;
}
}