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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;
private $mXslt = null;
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->mXslt = $params['xslt'];
$this->printText( '<?xml version="1.0"?>' );
if ( !is_null( $this->mXslt ) )
$this->addXslt();
$this->printText( self::recXmlPrint( $this->mRootElemName,
$this->getResultData(),
$this->getIsHtml() ? - 2 : null,
$this->mDoubleQuote ) );
}
/**
* 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.
*/
public static function recXmlPrint( $elemName, $elemValue, $indent, $doublequote = false ) {
$retval = '';
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 ( $doublequote )
$subElemContent = Sanitizer::encodeAttribute( $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 ) && $doublequote )
$subElemValue = Sanitizer::encodeAttribute( $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 ) ) {
$retval .= $indstr . Xml::element( $elemName, $elemValue, $subElemContent );
} elseif ( !count( $indElements ) && !count( $subElements ) ) {
$retval .= $indstr . Xml::element( $elemName, $elemValue );
} else {
$retval .= $indstr . Xml::element( $elemName, $elemValue, null );
foreach ( $subElements as $subElemId => & $subElemValue )
$retval .= self::recXmlPrint( $subElemId, $subElemValue, $indent );
foreach ( $indElements as $subElemId => & $subElemValue )
$retval .= self::recXmlPrint( $subElemIndName, $subElemValue, $indent );
$retval .= $indstr . Xml::closeElement( $elemName );
}
break;
case 'object' :
// ignore
break;
default :
$retval .= $indstr . Xml::element( $elemName, null, $elemValue );
break;
}
return $retval;
}
function addXslt() {
$nt = Title::newFromText( $this->mXslt );
if ( is_null( $nt ) || !$nt->exists() ) {
$this->setWarning( 'Invalid or non-existent stylesheet specified' );
return;
}
if ( $nt->getNamespace() != NS_MEDIAWIKI ) {
$this->setWarning( 'Stylesheet should be in the MediaWiki namespace.' );
return;
}
if ( substr( $nt->getText(), - 4 ) !== '.xsl' ) {
$this->setWarning( 'Stylesheet should have .xsl extension.' );
return;
}
$this->printText( '<?xml-stylesheet href="' . $nt->escapeLocalURL( 'action=raw' ) . '" type="text/xsl" ?>' );
}
public function getAllowedParams() {
return array (
'xmldoublequote' => false,
'xslt' => null,
);
}
public function getParamDescription() {
return array (
'xmldoublequote' => 'If specified, double quotes all attributes and content.',
'xslt' => 'If specified, adds <xslt> as stylesheet',
);
}
public function getDescription() {
return 'Output data in XML format' . parent :: getDescription();
}
public function getVersion() {
return __CLASS__ . ': $Id: ApiFormatXml.php 62402 2010-02-13 00:09:05Z reedy $';
}
}
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