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<?php
/**
* Parent class for manifest parsers.
*
* Converts manifest.xml files or strings to an array.
*
* This should be extended by a class that does the actual work
* to convert based on the manifest.xml version.
*
* This class only parses XML to an XmlEntity object and
* an array. The array should be used primarily to extract
* information since it is quicker to parse once and store
* values from the XmlElement object than to parse the object
* each time.
*
* The array should be an exact representation of the manifest.xml
* file or string. Any normalization needs to be done in the
* calling class / function.
*
* @package Elgg.Core
* @subpackage Plugins
* @since 1.8
*/
abstract class ElggPluginManifestParser {
/**
* The XmlElement object
*
* @var XmlElement
*/
protected $manifestObject;
/**
* The manifest array
*
* @var array
*/
protected $manifest;
/**
* All valid manifest attributes with default values.
*
* @var array
*/
protected $validAttributes;
/**
* The object we're doing parsing for.
*
* @var object
*/
protected $caller;
/**
* Loads the manifest XML to be parsed.
*
* @param ElggXmlElement $xml The Manifest XML object to be parsed
* @param object $caller The object calling this parser.
*/
public function __construct(ElggXMLElement $xml, $caller) {
$this->manifestObject = $xml;
$this->caller = $caller;
}
/**
* Returns the manifest XML object
*
* @return XmlElement
*/
public function getManifestObject() {
return $this->manifestObject;
}
/**
* Return the parsed manifest array
*
* @return array
*/
public function getManifest() {
return $this->manifest;
}
/**
* Return an attribute in the manifest.
*
* @param string $name Attribute name
* @return mixed
*/
public function getAttribute($name) {
if (in_array($name, $this->validAttributes) && isset($this->manifest[$name])) {
return $this->manifest[$name];
}
return false;
}
/**
* Parse the XML object into an array
*
* @return bool
*/
abstract public function parse();
}
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