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 /**
  28  * @ingroup API
  29  */
  30 class ApiParamInfo extends ApiBase {
  31
  32         /**
  33          * @var ApiQuery
  34          */
  35         protected $queryObj;
  36
  37         public function __construct( $main, $action ) {
  38                 parent::__construct( $main, $action );
  39                 $this->queryObj = new ApiQuery( $this->getMain(), 'query' );
  40         }
  41
  42         public function execute() {
  43                 // Get parameters
  44                 $params = $this->extractRequestParams();
  45                 $result = $this->getResult();
  46
  47                 $res = array();
  48                 if ( is_array( $params['modules'] ) ) {
  49                         $modules = $this->getMain()->getModules();
  50                         $res['modules'] = array();
  51                         foreach ( $params['modules'] as $mod ) {
  52                                 if ( !isset( $modules[$mod] ) ) {
  53                                         $res['modules'][] = array( 'name' => $mod, 'missing' => '' );
  54                                         continue;
  55                                 }
  56                                 $obj = new $modules[$mod]( $this->getMain(), $mod );
  57
  58                                 $item = $this->getClassInfo( $obj );
  59                                 $item['name'] = $mod;
  60                                 $res['modules'][] = $item;
  61                         }
  62                         $result->setIndexedTagName( $res['modules'], 'module' );
  63                 }
  64
  65                 if ( is_array( $params['querymodules'] ) ) {
  66                         $queryModules = $this->queryObj->getModules();
  67                         $res['querymodules'] = array();
  68                         foreach ( $params['querymodules'] as $qm ) {
  69                                 if ( !isset( $queryModules[$qm] ) ) {
  70                                         $res['querymodules'][] = array( 'name' => $qm, 'missing' => '' );
  71                                         continue;
  72                                 }
  73                                 $obj = new $queryModules[$qm]( $this, $qm );
  74                                 $item = $this->getClassInfo( $obj );
  75                                 $item['name'] = $qm;
  76                                 $item['querytype'] = $this->queryObj->getModuleType( $qm );
  77                                 $res['querymodules'][] = $item;
  78                         }
  79                         $result->setIndexedTagName( $res['querymodules'], 'module' );
  80                 }
  81
  82                 if ( $params['mainmodule'] ) {
  83                         $res['mainmodule'] = $this->getClassInfo( $this->getMain() );
  84                 }
  85
  86                 if ( $params['pagesetmodule'] ) {
  87                         $pageSet = new ApiPageSet( $this->queryObj );
  88                         $res['pagesetmodule'] = $this->getClassInfo( $pageSet );
  89                 }
  90
  91                 if ( is_array( $params['formatmodules'] ) ) {
  92                         $formats = $this->getMain()->getFormats();
  93                         $res['formatmodules'] = array();
  94                         foreach ( $params['formatmodules'] as $f ) {
  95                                 if ( !isset( $formats[$f] ) ) {
  96                                         $res['formatmodules'][] = array( 'name' => $f, 'missing' => '' );
  97                                         continue;
  98                                 }
  99                                 $obj = new $formats[$f]( $this, $f );
 100                                 $item = $this->getClassInfo( $obj );
 101                                 $item['name'] = $f;
 102                                 $res['formatmodules'][] = $item;
 103                         }
 104                         $result->setIndexedTagName( $res['formatmodules'], 'module' );
 105                 }
 106                 $result->addValue( null, $this->getModuleName(), $res );
 107         }
 108
 109         /**
 110          * @param $obj ApiBase
 111          * @return ApiResult
 112          */
 113         function getClassInfo( $obj ) {
 114                 $result = $this->getResult();
 115                 $retval['classname'] = get_class( $obj );
 116                 $retval['description'] = implode( "\n", (array)$obj->getFinalDescription() );
 117
 118                 $retval['examples'] = '';
 119
 120                 $retval['version'] = implode( "\n", (array)$obj->getVersion() );
 121                 $retval['prefix'] = $obj->getModulePrefix();
 122
 123                 if ( $obj->isReadMode() ) {
 124                         $retval['readrights'] = '';
 125                 }
 126                 if ( $obj->isWriteMode() ) {
 127                         $retval['writerights'] = '';
 128                 }
 129                 if ( $obj->mustBePosted() ) {
 130                         $retval['mustbeposted'] = '';
 131                 }
 132                 if ( $obj instanceof ApiQueryGeneratorBase ) {
 133                         $retval['generator'] = '';
 134                 }
 135
 136                 $allowedParams = $obj->getFinalParams();
 137                 if ( !is_array( $allowedParams ) ) {
 138                         return $retval;
 139                 }
 140
 141                 $retval['helpurls'] = (array)$obj->getHelpUrls();
 142                 if ( isset( $retval['helpurls'][0] ) && $retval['helpurls'][0] === false ) {
 143                         $retval['helpurls'] = array();
 144                 }
 145                 $result->setIndexedTagName( $retval['helpurls'], 'helpurl' );
 146
 147                 $examples = $obj->getExamples();
 148                 $retval['allexamples'] = array();
 149                 if ( $examples !== false ) {
 150                         if ( is_string( $examples ) ) {
 151                                 $examples = array( $examples );
 152                         }
 153                         foreach( $examples as $k => $v ) {
 154                                 if ( strlen( $retval['examples'] ) ) {
 155                                         $retval['examples'] .= ' ';
 156                                 }
 157                                 $item = array();
 158                                 if ( is_numeric( $k ) ) {
 159                                         $retval['examples'] .= $v;
 160                                         $result->setContent( $item, $v );
 161                                 } else {
 162                                         if ( !is_array( $v ) ) {
 163                                                 $item['description'] = $v;
 164                                         } else {
 165                                                 $item['description'] = implode( $v, "\n" );
 166                                         }
 167                                         $retval['examples'] .= $item['description'] . ' ' . $k;
 168                                         $result->setContent( $item, $k );
 169                                 }
 170                                 $retval['allexamples'][] = $item;
 171                         }
 172                 }
 173                 $result->setIndexedTagName( $retval['allexamples'], 'example' );
 174
 175                 $retval['parameters'] = array();
 176                 $paramDesc = $obj->getFinalParamDescription();
 177                 foreach ( $allowedParams as $n => $p ) {
 178                         $a = array( 'name' => $n );
 179                         if ( isset( $paramDesc[$n] ) ) {
 180                                 $a['description'] = implode( "\n", (array)$paramDesc[$n] );
 181                         }
 182
 183                         //handle shorthand
 184                         if( !is_array( $p ) ) {
 185                                 $p = array(
 186                                         ApiBase::PARAM_DFLT => $p,
 187                                 );
 188                         }
 189
 190                         //handle missing type
 191                         if ( !isset( $p[ApiBase::PARAM_TYPE] ) ) {
 192                                 $dflt = isset( $p[ApiBase::PARAM_DFLT] ) ? $p[ApiBase::PARAM_DFLT] : null;
 193                                 if ( is_bool( $dflt ) ) {
 194                                         $p[ApiBase::PARAM_TYPE] = 'boolean';
 195                                 } elseif ( is_string( $dflt ) || is_null( $dflt ) ) {
 196                                         $p[ApiBase::PARAM_TYPE] = 'string';
 197                                 } elseif ( is_int( $dflt ) ) {
 198                                         $p[ApiBase::PARAM_TYPE] = 'integer';
 199                                 }
 200                         }
 201
 202                         if ( isset( $p[ApiBase::PARAM_DEPRECATED] ) && $p[ApiBase::PARAM_DEPRECATED] ) {
 203                                 $a['deprecated'] = '';
 204                         }
 205                         if ( isset( $p[ApiBase::PARAM_REQUIRED] ) && $p[ApiBase::PARAM_REQUIRED] ) {
 206                                 $a['required'] = '';
 207                         }
 208
 209                         if ( isset( $p[ApiBase::PARAM_DFLT] ) ) {
 210                                 $type = $p[ApiBase::PARAM_TYPE];
 211                                 if( $type === 'boolean' ) {
 212                                         $a['default'] = ( $p[ApiBase::PARAM_DFLT] ? 'true' : 'false' );
 213                                 } elseif( $type === 'string' ) {
 214                                         $a['default'] = strval( $p[ApiBase::PARAM_DFLT] );
 215                                 } elseif( $type === 'integer' ) {
 216                                         $a['default'] = intval( $p[ApiBase::PARAM_DFLT] );
 217                                 } else {
 218                                         $a['default'] = $p[ApiBase::PARAM_DFLT];
 219                                 }
 220                         }
 221                         if ( isset( $p[ApiBase::PARAM_ISMULTI] ) && $p[ApiBase::PARAM_ISMULTI] ) {
 222                                 $a['multi'] = '';
 223                                 $a['limit'] = $this->getMain()->canApiHighLimits() ?
 224                                         ApiBase::LIMIT_SML2 :
 225                                         ApiBase::LIMIT_SML1;
 226                                 $a['lowlimit'] = ApiBase::LIMIT_SML1;
 227                                 $a['highlimit'] = ApiBase::LIMIT_SML2;
 228                         }
 229
 230                         if ( isset( $p[ApiBase::PARAM_ALLOW_DUPLICATES] ) && $p[ApiBase::PARAM_ALLOW_DUPLICATES] ) {
 231                                 $a['allowsduplicates'] = '';
 232                         }
 233
 234                         if ( isset( $p[ApiBase::PARAM_TYPE] ) ) {
 235                                 $a['type'] = $p[ApiBase::PARAM_TYPE];
 236                                 if ( is_array( $a['type'] ) ) {
 237                                         $a['type'] = array_values( $a['type'] ); // to prevent sparse arrays from being serialized to JSON as objects
 238                                         $result->setIndexedTagName( $a['type'], 't' );
 239                                 }
 240                         }
 241                         if ( isset( $p[ApiBase::PARAM_MAX] ) ) {
 242                                 $a['max'] = $p[ApiBase::PARAM_MAX];
 243                         }
 244                         if ( isset( $p[ApiBase::PARAM_MAX2] ) ) {
 245                                 $a['highmax'] = $p[ApiBase::PARAM_MAX2];
 246                         }
 247                         if ( isset( $p[ApiBase::PARAM_MIN] ) ) {
 248                                 $a['min'] = $p[ApiBase::PARAM_MIN];
 249                         }
 250                         $retval['parameters'][] = $a;
 251                 }
 252                 $result->setIndexedTagName( $retval['parameters'], 'param' );
 253
 254                 // Errors
 255                 $retval['errors'] = $this->parseErrors( $obj->getPossibleErrors() );
 256                 $result->setIndexedTagName( $retval['errors'], 'error' );
 257
 258                 return $retval;
 259         }
 260
 261         public function isReadMode() {
 262                 return false;
 263         }
 264
 265         public function getAllowedParams() {
 266                 $modules = array_keys( $this->getMain()->getModules() );
 267                 sort( $modules );
 268                 $querymodules = array_keys( $this->queryObj->getModules() );
 269                 sort( $querymodules );
 270                 $formatmodules = array_keys( $this->getMain()->getFormats() );
 271                 sort( $formatmodules );
 272                 return array(
 273                         'modules' => array(
 274                                 ApiBase::PARAM_ISMULTI => true,
 275                                 ApiBase::PARAM_TYPE => $modules,
 276                         ),
 277                         'querymodules' => array(
 278                                 ApiBase::PARAM_ISMULTI => true,
 279                                 ApiBase::PARAM_TYPE => $querymodules,
 280                         ),
 281                         'mainmodule' => false,
 282                         'pagesetmodule' => false,
 283                         'formatmodules' => array(
 284                                 ApiBase::PARAM_ISMULTI => true,
 285                                 ApiBase::PARAM_TYPE => $formatmodules,
 286                         )
 287                 );
 288         }
 289
 290         public function getParamDescription() {
 291                 return array(
 292                         'modules' => 'List of module names (value of the action= parameter)',
 293                         'querymodules' => 'List of query module names (value of prop=, meta= or list= parameter)',
 294                         'mainmodule' => 'Get information about the main (top-level) module as well',
 295                         'pagesetmodule' => 'Get information about the pageset module (providing titles= and friends) as well',
 296                         'formatmodules' => 'List of format module names (value of format= parameter)',
 297                 );
 298         }
 299
 300         public function getDescription() {
 301                 return 'Obtain information about certain API parameters and errors';
 302         }
 303
 304         public function getExamples() {
 305                 return array(
 306                         'api.php?action=paraminfo&modules=parse&querymodules=allpages|siteinfo'
 307                 );
 308         }
 309
 310         public function getHelpUrls() {
 311                 return 'https://www.mediawiki.org/wiki/API:Parameter_information';
 312         }
 313
 314         public function getVersion() {
 315                 return __CLASS__ . ': $Id$';
 316         }
 317 }