includes/api/ApiParamInfo.php

   1 <?php
   2 /**
   3  *
   4  *
   5  * Created on Dec 01, 2007
   6  *
   7  * Copyright © 2008 Roan Kattouw <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 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                                 $a['querytype'] = $queryObj->getModuleType( $qm );
  74                                 $r['querymodules'][] = $a;
  75                         }
  76                         $result->setIndexedTagName( $r['querymodules'], 'module' );
  77                 }
  78                 if ( $params['mainmodule'] ) {
  79                         $r['mainmodule'] = $this->getClassInfo( $this->getMain() );
  80                 }
  81                 if ( $params['pagesetmodule'] ) {
  82                         $pageSet = new ApiPageSet( $queryObj );
  83                         $r['pagesetmodule'] = $this->getClassInfo( $pageSet );
  84                 }
  85                 $result->addValue( null, $this->getModuleName(), $r );
  86         }
  87
  88         /**
  89          * @param $obj ApiBase
  90          * @return ApiResult
  91          */
  92         function getClassInfo( $obj ) {
  93                 $result = $this->getResult();
  94                 $retval['classname'] = get_class( $obj );
  95                 $retval['description'] = implode( "\n", (array)$obj->getDescription() );
  96                 $retval['examples'] = implode( "\n", (array)$obj->getExamples() );
  97                 $retval['helpurl'] = implode( "\n", (array)$obj->getHelpUrl() );
  98                 $retval['version'] = implode( "\n", (array)$obj->getVersion() );
  99                 $retval['prefix'] = $obj->getModulePrefix();
 100
 101                 if ( $obj->isReadMode() ) {
 102                         $retval['readrights'] = '';
 103                 }
 104                 if ( $obj->isWriteMode() ) {
 105                         $retval['writerights'] = '';
 106                 }
 107                 if ( $obj->mustBePosted() ) {
 108                         $retval['mustbeposted'] = '';
 109                 }
 110                 if ( $obj instanceof ApiQueryGeneratorBase ) {
 111                         $retval['generator'] = '';
 112                 }
 113
 114                 $allowedParams = $obj->getFinalParams();
 115                 if ( !is_array( $allowedParams ) ) {
 116                         return $retval;
 117                 }
 118
 119                 $retval['parameters'] = array();
 120                 $paramDesc = $obj->getFinalParamDescription();
 121                 foreach ( $allowedParams as $n => $p ) {
 122                         $a = array( 'name' => $n );
 123                         if ( isset( $paramDesc[$n] ) ) {
 124                                 $a['description'] = implode( "\n", (array)$paramDesc[$n] );
 125                         }
 126
 127                         //handle shorthand
 128                         if( !is_array( $p ) ) {
 129                                 $p = array(
 130                                         ApiBase::PARAM_DFLT => $p,
 131                                 );
 132                         }
 133
 134                         //handle missing type
 135                         if ( !isset( $p[ApiBase::PARAM_TYPE] ) ) {
 136                                 $dflt = isset( $p[ApiBase::PARAM_DFLT] ) ? $p[ApiBase::PARAM_DFLT] : null;
 137                                 if ( is_bool( $dflt ) ) {
 138                                         $p[ApiBase::PARAM_TYPE] = 'boolean';
 139                                 } elseif ( is_string( $dflt ) || is_null( $dflt ) ) {
 140                                         $p[ApiBase::PARAM_TYPE] = 'string';
 141                                 } elseif ( is_int( $dflt ) ) {
 142                                         $p[ApiBase::PARAM_TYPE] = 'integer';
 143                                 }
 144                         }
 145
 146                         if ( isset( $p[ApiBase::PARAM_DEPRECATED] ) && $p[ApiBase::PARAM_DEPRECATED] ) {
 147                                 $a['deprecated'] = '';
 148                         }
 149                         if ( isset( $p[ApiBase::PARAM_REQUIRED] ) && $p[ApiBase::PARAM_REQUIRED] ) {
 150                                 $a['required'] = '';
 151                         }
 152
 153                         if ( isset( $p[ApiBase::PARAM_DFLT] ) ) {
 154                                 $type = $p[ApiBase::PARAM_TYPE];
 155                                 if( $type === 'boolean' ) {
 156                                         $a['default'] = ( $p[ApiBase::PARAM_DFLT] ? 'true' : 'false' );
 157                                 } elseif( $type === 'string' ) {
 158                                         $a['default'] = strval( $p[ApiBase::PARAM_DFLT] );
 159                                 } elseif( $type === 'integer' ) {
 160                                         $a['default'] = intval( $p[ApiBase::PARAM_DFLT] );
 161                                 } else {
 162                                         $a['default'] = $p[ApiBase::PARAM_DFLT];
 163                                 }
 164                         }
 165                         if ( isset( $p[ApiBase::PARAM_ISMULTI] ) && $p[ApiBase::PARAM_ISMULTI] ) {
 166                                 $a['multi'] = '';
 167                                 $a['limit'] = $this->getMain()->canApiHighLimits() ?
 168                                         ApiBase::LIMIT_SML2 :
 169                                         ApiBase::LIMIT_SML1;
 170                                 $a['lowlimit'] = ApiBase::LIMIT_SML1;
 171                                 $a['highlimit'] = ApiBase::LIMIT_SML2;
 172                         }
 173
 174                         if ( isset( $p[ApiBase::PARAM_ALLOW_DUPLICATES] ) && $p[ApiBase::PARAM_ALLOW_DUPLICATES] ) {
 175                                 $a['allowsduplicates'] = '';
 176                         }
 177
 178                         if ( isset( $p[ApiBase::PARAM_TYPE] ) ) {
 179                                 $a['type'] = $p[ApiBase::PARAM_TYPE];
 180                                 if ( is_array( $a['type'] ) ) {
 181                                         $a['type'] = array_values( $a['type'] ); // to prevent sparse arrays from being serialized to JSON as objects
 182                                         $result->setIndexedTagName( $a['type'], 't' );
 183                                 }
 184                         }
 185                         if ( isset( $p[ApiBase::PARAM_MAX] ) ) {
 186                                 $a['max'] = $p[ApiBase::PARAM_MAX];
 187                         }
 188                         if ( isset( $p[ApiBase::PARAM_MAX2] ) ) {
 189                                 $a['highmax'] = $p[ApiBase::PARAM_MAX2];
 190                         }
 191                         if ( isset( $p[ApiBase::PARAM_MIN] ) ) {
 192                                 $a['min'] = $p[ApiBase::PARAM_MIN];
 193                         }
 194                         $retval['parameters'][] = $a;
 195                 }
 196                 $result->setIndexedTagName( $retval['parameters'], 'param' );
 197
 198                 // Errors
 199                 $retval['errors'] = $this->parseErrors( $obj->getPossibleErrors() );
 200
 201                 $result->setIndexedTagName( $retval['errors'], 'error' );
 202
 203                 return $retval;
 204         }
 205
 206         public function isReadMode() {
 207                 return false;
 208         }
 209
 210         public function getAllowedParams() {
 211                 return array(
 212                         'modules' => array(
 213                                 ApiBase::PARAM_ISMULTI => true
 214                         ),
 215                         'querymodules' => array(
 216                                 ApiBase::PARAM_ISMULTI => true
 217                         ),
 218                         'mainmodule' => false,
 219                         'pagesetmodule' => false,
 220                 );
 221         }
 222
 223         public function getParamDescription() {
 224                 return array(
 225                         'modules' => 'List of module names (value of the action= parameter)',
 226                         'querymodules' => 'List of query module names (value of prop=, meta= or list= parameter)',
 227                         'mainmodule' => 'Get information about the main (top-level) module as well',
 228                         'pagesetmodule' => 'Get information about the pageset module (providing titles= and friends) as well',
 229                 );
 230         }
 231
 232         public function getDescription() {
 233                 return 'Obtain information about certain API parameters and errors';
 234         }
 235
 236         protected function getExamples() {
 237                 return array(
 238                         'api.php?action=paraminfo&modules=parse&querymodules=allpages|siteinfo'
 239                 );
 240         }
 241
 242         public function getHelpUrl() {
 243                 return 'http://www.mediawiki.org/wiki/API:Parameter_information';
 244         }
 245
 246         public function getVersion() {
 247                 return __CLASS__ . ': $Id$';
 248         }
 249 }