includes/api/ApiFormatJson.php

   1 <?php
   2 /**
   3  *
   4  *
   5  * Created on Sep 19, 2006
   6  *
   7  * Copyright © 2006 Yuri Astrakhan "<Firstname><Lastname>@gmail.com"
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License along
  20  * with this program; if not, write to the Free Software Foundation, Inc.,
  21  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  22  * http://www.gnu.org/copyleft/gpl.html
  23  *
  24  * @file
  25  */
  26
  27 /**
  28  * API JSON output formatter
  29  * @ingroup API
  30  */
  31 class ApiFormatJson extends ApiFormatBase {
  32
  33         private $mIsRaw;
  34
  35         public function __construct( $main, $format ) {
  36                 parent::__construct( $main, $format );
  37                 $this->mIsRaw = ( $format === 'rawfm' );
  38         }
  39
  40         public function getMimeType() {
  41                 $params = $this->extractRequestParams();
  42                 // callback:
  43                 if ( $params['callback'] ) {
  44                         return 'text/javascript';
  45                 }
  46                 return 'application/json';
  47         }
  48
  49         public function getNeedsRawData() {
  50                 return $this->mIsRaw;
  51         }
  52
  53         public function getWantsHelp() {
  54                 // Help is always ugly in JSON
  55                 return false;
  56         }
  57
  58         public function execute() {
  59                 $params = $this->extractRequestParams();
  60                 $json = FormatJson::encode(
  61                         $this->getResultData(),
  62                         $this->getIsHtml(),
  63                         $params['utf8'] ? FormatJson::ALL_OK : FormatJson::XMLMETA_OK
  64                 );
  65                 $callback = $params['callback'];
  66                 if ( $callback !== null ) {
  67                         $callback = preg_replace( "/[^][.\\'\\\"_A-Za-z0-9]/", '', $callback );
  68                         $this->printText( "$callback($json)" );
  69                 } else {
  70                         $this->printText( $json );
  71                 }
  72         }
  73
  74         public function getAllowedParams() {
  75                 return array(
  76                         'callback' => null,
  77                         'utf8' => false,
  78                 );
  79         }
  80
  81         public function getParamDescription() {
  82                 return array(
  83                         'callback' => 'If specified, wraps the output into a given function call. For safety, all user-specific data will be restricted.',
  84                         'utf8' => 'If specified, encodes most (but not all) non-ASCII characters as UTF-8 instead of replacing them with hexadecimal escape sequences.',
  85                 );
  86         }
  87
  88         public function getDescription() {
  89                 if ( $this->mIsRaw ) {
  90                         return 'Output data with the debugging elements in JSON format' . parent::getDescription();
  91                 } else {
  92                         return 'Output data in JSON format' . parent::getDescription();
  93                 }
  94         }
  95 }