includes/api/ApiParamInfo.php

   1 <?php
   2 /**
   3  * API for MediaWiki 1.8+
   4  *
   5  * Created on Dec 01, 2007
   6  *
   7  * Copyright © 2008 Roan Kattouw <Firstname>.<Lastname>@home.nl
   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 if ( !defined( 'MEDIAWIKI' ) ) {
  28         // Eclipse helper - will be ignored in production
  29         require_once( "ApiBase.php" );
  30 }
  31
  32 /**
  33  * @ingroup API
  34  */
  35 class ApiParamInfo extends ApiBase {
  36
  37         public function __construct( $main, $action ) {
  38                 parent::__construct( $main, $action );
  39         }
  40
  41         public function execute() {
  42                 // Get parameters
  43                 $params = $this->extractRequestParams();
  44                 $result = $this->getResult();
  45                 $queryObj = new ApiQuery( $this->getMain(), 'query' );
  46                 $r = array();
  47                 if ( is_array( $params['modules'] ) ) {
  48                         $modArr = $this->getMain()->getModules();
  49                         $r['modules'] = array();
  50                         foreach ( $params['modules'] as $m ) {
  51                                 if ( !isset( $modArr[$m] ) ) {
  52                                         $r['modules'][] = array( 'name' => $m, 'missing' => '' );
  53                                         continue;
  54                                 }
  55                                 $obj = new $modArr[$m]( $this->getMain(), $m );
  56                                 $a = $this->getClassInfo( $obj );
  57                                 $a['name'] = $m;
  58                                 $r['modules'][] = $a;
  59                         }
  60                         $result->setIndexedTagName( $r['modules'], 'module' );
  61                 }
  62                 if ( is_array( $params['querymodules'] ) ) {
  63                         $qmodArr = $queryObj->getModules();
  64                         $r['querymodules'] = array();
  65                         foreach ( $params['querymodules'] as $qm ) {
  66                                 if ( !isset( $qmodArr[$qm] ) ) {
  67                                         $r['querymodules'][] = array( 'name' => $qm, 'missing' => '' );
  68                                         continue;
  69                                 }
  70                                 $obj = new $qmodArr[$qm]( $this, $qm );
  71                                 $a = $this->getClassInfo( $obj );
  72                                 $a['name'] = $qm;
  73                                 $r['querymodules'][] = $a;
  74                         }
  75                         $result->setIndexedTagName( $r['querymodules'], 'module' );
  76                 }
  77                 if ( $params['mainmodule'] ) {
  78                         $r['mainmodule'] = $this->getClassInfo( $this->getMain() );
  79                 }
  80                 if ( $params['pagesetmodule'] ) {
  81                         $pageSet = new ApiPageSet( $queryObj );
  82                         $r['pagesetmodule'] = $this->getClassInfo( $pageSet );
  83                 }
  84                 $result->addValue( null, $this->getModuleName(), $r );
  85         }
  86
  87         function getClassInfo( $obj ) {
  88                 $result = $this->getResult();
  89                 $retval['classname'] = get_class( $obj );
  90                 $retval['description'] = implode( "\n", (array)$obj->getDescription() );
  91                 $retval['examples'] = implode( "\n", (array)$obj->getExamples() );
  92                 $retval['version'] = implode( "\n", (array)$obj->getVersion() );
  93                 $retval['prefix'] = $obj->getModulePrefix();
  94
  95                 if ( $obj->isReadMode() ) {
  96                         $retval['readrights'] = '';
  97                 }
  98                 if ( $obj->isWriteMode() ) {
  99                         $retval['writerights'] = '';
 100                 }
 101                 if ( $obj->mustBePosted() ) {
 102                         $retval['mustbeposted'] = '';
 103                 }
 104                 if ( $obj instanceof ApiQueryGeneratorBase ) {
 105                         $retval['generator'] = '';
 106                 }
 107
 108                 $allowedParams = $obj->getFinalParams();
 109                 if ( !is_array( $allowedParams ) ) {
 110                         return $retval;
 111                 }
 112
 113                 $retval['parameters'] = array();
 114                 $paramDesc = $obj->getFinalParamDescription();
 115                 foreach ( $allowedParams as $n => $p ) {
 116                         $a = array( 'name' => $n );
 117                         if ( isset( $paramDesc[$n] ) ) {
 118                                 $a['description'] = implode( "\n", (array)$paramDesc[$n] );
 119                         }
 120                         if ( isset( $p[ApiBase::PARAM_DEPRECATED] ) && $p[ApiBase::PARAM_DEPRECATED] ) {
 121                                 $a['deprecated'] = '';
 122                         }
 123                         if ( isset( $p[ApiBase::PARAM_REQUIRED] ) && $p[ApiBase::PARAM_REQUIRED] ) {
 124                                 $a['required'] = '';
 125                         }
 126
 127                         if ( !is_array( $p ) ) {
 128                                 if ( is_bool( $p ) ) {
 129                                         $a['type'] = 'bool';
 130                                         $a['default'] = ( $p ? 'true' : 'false' );
 131                                 } elseif ( is_string( $p ) || is_null( $p ) ) {
 132                                         $a['type'] = 'string';
 133                                         $a['default'] = strval( $p );
 134                                 } elseif ( is_int( $p ) ) {
 135                                         $a['type'] = 'integer';
 136                                         $a['default'] = intval( $p );
 137                                 }
 138                                 $retval['parameters'][] = $a;
 139                                 continue;
 140                         }
 141
 142                         if ( isset( $p[ApiBase::PARAM_DFLT] ) ) {
 143                                 $a['default'] = $p[ApiBase::PARAM_DFLT];
 144                         }
 145                         if ( isset( $p[ApiBase::PARAM_ISMULTI] ) && $p[ApiBase::PARAM_ISMULTI] ) {
 146                                 $a['multi'] = '';
 147                                 $a['limit'] = $this->getMain()->canApiHighLimits() ?
 148                                                 ApiBase::LIMIT_SML2 :
 149                                                 ApiBase::LIMIT_SML1;
 150                         }
 151
 152                         if ( isset( $p[ApiBase::PARAM_ALLOW_DUPLICATES] ) && $p[ApiBase::PARAM_ALLOW_DUPLICATES] ) {
 153                                 $a['allowsduplicates'] = '';
 154                         }
 155
 156                         if ( isset( $p[ApiBase::PARAM_TYPE] ) ) {
 157                                 $a['type'] = $p[ApiBase::PARAM_TYPE];
 158                                 if ( is_array( $a['type'] ) ) {
 159                                         $a['type'] = array_values( $a['type'] ); // to prevent sparse arrays from being serialized to JSON as objects
 160                                         $result->setIndexedTagName( $a['type'], 't' );
 161                                 }
 162                         }
 163                         if ( isset( $p[ApiBase::PARAM_MAX] ) ) {
 164                                 $a['max'] = $p[ApiBase::PARAM_MAX];
 165                         }
 166                         if ( isset( $p[ApiBase::PARAM_MAX2] ) ) {
 167                                 $a['highmax'] = $p[ApiBase::PARAM_MAX2];
 168                         }
 169                         if ( isset( $p[ApiBase::PARAM_MIN] ) ) {
 170                                 $a['min'] = $p[ApiBase::PARAM_MIN];
 171                         }
 172                         $retval['parameters'][] = $a;
 173                 }
 174                 $result->setIndexedTagName( $retval['parameters'], 'param' );
 175
 176                 // Errors
 177                 $retval['errors'] = $this->parseErrors( $obj->getPossibleErrors() );
 178
 179                 $result->setIndexedTagName( $retval['errors'], 'error' );
 180
 181                 return $retval;
 182         }
 183
 184         public function isReadMode() {
 185                 return false;
 186         }
 187
 188         public function getAllowedParams() {
 189                 return array(
 190                         'modules' => array(
 191                                 ApiBase::PARAM_ISMULTI => true
 192                         ),
 193                         'querymodules' => array(
 194                                 ApiBase::PARAM_ISMULTI => true
 195                         ),
 196                         'mainmodule' => false,
 197                         'pagesetmodule' => false,
 198                 );
 199         }
 200
 201         public function getParamDescription() {
 202                 return array(
 203                         'modules' => 'List of module names (value of the action= parameter)',
 204                         'querymodules' => 'List of query module names (value of prop=, meta= or list= parameter)',
 205                         'mainmodule' => 'Get information about the main (top-level) module as well',
 206                         'pagesetmodule' => 'Get information about the pageset module (providing titles= and friends) as well',
 207                 );
 208         }
 209
 210         public function getDescription() {
 211                 return 'Obtain information about certain API parameters and errors';
 212         }
 213
 214         protected function getExamples() {
 215                 return array(
 216                         'api.php?action=paraminfo&modules=parse&querymodules=allpages|siteinfo'
 217                 );
 218         }
 219
 220         public function getVersion() {
 221                 return __CLASS__ . ': $Id$';
 222         }
 223 }