includes/api/ApiFormatWddx.php

   1 <?php
   2
   3 /*
   4  * Created on Oct 22, 2006
   5  *
   6  * API for MediaWiki 1.8+
   7  *
   8  * Copyright (C) 2006 Yuri Astrakhan <Firstname><Lastname>@gmail.com
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License along
  21  * with this program; if not, write to the Free Software Foundation, Inc.,
  22  * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  23  * http://www.gnu.org/copyleft/gpl.html
  24  */
  25
  26 if ( !defined( 'MEDIAWIKI' ) ) {
  27         // Eclipse helper - will be ignored in production
  28         require_once ( 'ApiFormatBase.php' );
  29 }
  30
  31 /**
  32  * @ingroup API
  33  */
  34 class ApiFormatWddx extends ApiFormatBase {
  35
  36         public function __construct( $main, $format ) {
  37                 parent :: __construct( $main, $format );
  38         }
  39
  40         public function getMimeType() {
  41                 return 'text/xml';
  42         }
  43
  44         public function execute() {
  45                 // Some versions of PHP have a broken wddx_serialize_value, see
  46                 // PHP bug 45314. Test encoding an affected character (U+00A0)
  47                 // to avoid this.
  48                 $expected = "<wddxPacket version='1.0'><header/><data><string>\xc2\xa0</string></data></wddxPacket>";
  49                 if ( function_exists( 'wddx_serialize_value' )
  50                                 && !$this->getIsHtml()
  51                                 && wddx_serialize_value( "\xc2\xa0" ) == $expected ) {
  52                         $this->printText( wddx_serialize_value( $this->getResultData() ) );
  53                 } else {
  54                         // Don't do newlines and indentation if we weren't asked
  55                         // for pretty output
  56                         $nl = ( $this->getIsHtml() ? "" : "\n" );
  57                         $indstr = " ";
  58                         $this->printText( "<?xml version=\"1.0\"?>$nl" );
  59                         $this->printText( "<wddxPacket version=\"1.0\">$nl" );
  60                         $this->printText( "$indstr<header/>$nl" );
  61                         $this->printText( "$indstr<data>$nl" );
  62                         $this->slowWddxPrinter( $this->getResultData(), 4 );
  63                         $this->printText( "$indstr</data>$nl" );
  64                         $this->printText( "</wddxPacket>$nl" );
  65                 }
  66         }
  67
  68         /**
  69          * Recursively go through the object and output its data in WDDX format.
  70          */
  71         function slowWddxPrinter( $elemValue, $indent = 0 ) {
  72                 $indstr = ( $this->getIsHtml() ? "" : str_repeat( ' ', $indent ) );
  73                 $indstr2 = ( $this->getIsHtml() ? "" : str_repeat( ' ', $indent + 2 ) );
  74                 $nl = ( $this->getIsHtml() ? "" : "\n" );
  75                 switch ( gettype( $elemValue ) ) {
  76                         case 'array' :
  77                                 // Check whether we've got an associative array (<struct>)
  78                                 // or a regular array (<array>)
  79                                 $cnt = count( $elemValue );
  80                                 if ( $cnt == 0 || array_keys( $elemValue ) === range( 0, $cnt - 1 ) ) {
  81                                         // Regular array
  82                                         $this->printText( $indstr . Xml::element( 'array', array(
  83                                                 'length' => $cnt ), null ) . $nl );
  84                                         foreach ( $elemValue as $subElemValue )
  85                                                 $this->slowWddxPrinter( $subElemValue, $indent + 2 );
  86                                         $this->printText( "$indstr</array>$nl" );
  87                                 } else {
  88                                         // Associative array (<struct>)
  89                                         $this->printText( "$indstr<struct>$nl" );
  90                                         foreach ( $elemValue as $subElemName => $subElemValue ) {
  91                                                 $this->printText( $indstr2 . Xml::element( 'var', array(
  92                                                         'name' => $subElemName
  93                                                 ), null ) . $nl );
  94                                                 $this->slowWddxPrinter( $subElemValue, $indent + 4 );
  95                                                 $this->printText( "$indstr2</var>$nl" );
  96                                         }
  97                                         $this->printText( "$indstr</struct>$nl" );
  98                                 }
  99                                 break;
 100                         case 'integer' :
 101                         case 'double' :
 102                                 $this->printText( $indstr . Xml::element( 'number', null, $elemValue ) . $nl );
 103                                 break;
 104                         case 'string' :
 105                                 $this->printText( $indstr . Xml::element( 'string', null, $elemValue ) . $nl );
 106                                 break;
 107                         default :
 108                                 ApiBase :: dieDebug( __METHOD__, 'Unknown type ' . gettype( $elemValue ) );
 109                 }
 110         }
 111
 112         public function getDescription() {
 113                 return 'Output data in WDDX format' . parent :: getDescription();
 114         }
 115
 116         public function getVersion() {
 117                 return __CLASS__ . ': $Id$';
 118         }
 119 }