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<?php
/*
* Created on Sep 19, 2006
*
* API for MediaWiki 1.8+
*
* Copyright (C) 2006 Yuri Astrakhan <Firstname><Lastname>@gmail.com
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
* http://www.gnu.org/copyleft/gpl.html
*/
if (!defined('MEDIAWIKI')) {
// Eclipse helper - will be ignored in production
require_once ('ApiFormatBase.php');
}
/**
* @ingroup API
*/
class ApiFormatXml extends ApiFormatBase {
private $mRootElemName = 'api';
private $mDoubleQuote = false;
public function __construct($main, $format) {
parent :: __construct($main, $format);
}
public function getMimeType() {
return 'text/xml';
}
public function getNeedsRawData() {
return true;
}
public function setRootElement($rootElemName) {
$this->mRootElemName = $rootElemName;
}
public function execute() {
$params = $this->extractRequestParams();
$this->mDoubleQuote = $params['xmldoublequote'];
$this->printText('<?xml version="1.0"?>');
$this->recXmlPrint($this->mRootElemName, $this->getResultData(), $this->getIsHtml() ? -2 : null);
}
/**
* This method takes an array and converts it to XML.
* There are several noteworthy cases:
*
* If array contains a key '_element', then the code assumes that ALL other keys are not important and replaces them with the value['_element'].
* Example: name='root', value = array( '_element'=>'page', 'x', 'y', 'z') creates <root> <page>x</page> <page>y</page> <page>z</page> </root>
*
* If any of the array's element key is '*', then the code treats all other key->value pairs as attributes, and the value['*'] as the element's content.
* Example: name='root', value = array( '*'=>'text', 'lang'=>'en', 'id'=>10) creates <root lang='en' id='10'>text</root>
*
* If neither key is found, all keys become element names, and values become element content.
* The method is recursive, so the same rules apply to any sub-arrays.
*/
function recXmlPrint($elemName, $elemValue, $indent) {
if (!is_null($indent)) {
$indent += 2;
$indstr = "\n" . str_repeat(" ", $indent);
} else {
$indstr = '';
}
$elemName = str_replace(' ', '_', $elemName);
switch (gettype($elemValue)) {
case 'array' :
if (isset ($elemValue['*'])) {
$subElemContent = $elemValue['*'];
if ($this->mDoubleQuote)
$subElemContent = $this->doubleQuote($subElemContent);
unset ($elemValue['*']);
// Add xml:space="preserve" to the
// element so XML parsers will leave
// whitespace in the content alone
$elemValue['xml:space'] = 'preserve';
} else {
$subElemContent = null;
}
if (isset ($elemValue['_element'])) {
$subElemIndName = $elemValue['_element'];
unset ($elemValue['_element']);
} else {
$subElemIndName = null;
}
$indElements = array ();
$subElements = array ();
foreach ($elemValue as $subElemId => & $subElemValue) {
if (is_string($subElemValue) && $this->mDoubleQuote)
$subElemValue = $this->doubleQuote($subElemValue);
if (gettype($subElemId) === 'integer') {
$indElements[] = $subElemValue;
unset ($elemValue[$subElemId]);
} elseif (is_array($subElemValue)) {
$subElements[$subElemId] = $subElemValue;
unset ($elemValue[$subElemId]);
}
}
if (is_null($subElemIndName) && count($indElements))
ApiBase :: dieDebug(__METHOD__, "($elemName, ...) has integer keys without _element value. Use ApiResult::setIndexedTagName().");
if (count($subElements) && count($indElements) && !is_null($subElemContent))
ApiBase :: dieDebug(__METHOD__, "($elemName, ...) has content and subelements");
if (!is_null($subElemContent)) {
$this->printText($indstr . Xml::element($elemName, $elemValue, $subElemContent));
} elseif (!count($indElements) && !count($subElements)) {
$this->printText($indstr . Xml::element($elemName, $elemValue));
} else {
$this->printText($indstr . Xml::element($elemName, $elemValue, null));
foreach ($subElements as $subElemId => & $subElemValue)
$this->recXmlPrint($subElemId, $subElemValue, $indent);
foreach ($indElements as $subElemId => & $subElemValue)
$this->recXmlPrint($subElemIndName, $subElemValue, $indent);
$this->printText($indstr . Xml::closeElement($elemName));
}
break;
case 'object' :
// ignore
break;
default :
$this->printText($indstr . Xml::element($elemName, null, $elemValue));
break;
}
}
private function doubleQuote( $text ) {
return Sanitizer::encodeAttribute( $text );
}
public function getAllowedParams() {
return array (
'xmldoublequote' => false
);
}
public function getParamDescription() {
return array (
'xmldoublequote' => 'If specified, double quotes all attributes and content.',
);
}
public function getDescription() {
return 'Output data in XML format' . parent :: getDescription();
}
public function getVersion() {
return __CLASS__ . ': $Id: ApiFormatXml.php 50217 2009-05-05 13:12:16Z tstarling $';
}
}
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