includes/api/ApiFeedContributions.php

   1 <?php
   2 /**
   3  *
   4  *
   5  * Created on June 06, 2011
   6  *
   7  * Copyright © 2011 Sam Reed
   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 ApiFeedContributions extends ApiBase {
  31
  32         /**
  33          * This module uses a custom feed wrapper printer.
  34          *
  35          * @return ApiFormatFeedWrapper
  36          */
  37         public function getCustomPrinter() {
  38                 return new ApiFormatFeedWrapper( $this->getMain() );
  39         }
  40
  41         public function execute() {
  42                 $params = $this->extractRequestParams();
  43
  44                 $config = $this->getConfig();
  45                 if ( !$config->get( 'Feed' ) ) {
  46                         $this->dieUsage( 'Syndication feeds are not available', 'feed-unavailable' );
  47                 }
  48
  49                 $feedClasses = $config->get( 'FeedClasses' );
  50                 if ( !isset( $feedClasses[$params['feedformat']] ) ) {
  51                         $this->dieUsage( 'Invalid subscription feed type', 'feed-invalid' );
  52                 }
  53
  54                 if ( $params['showsizediff'] && $this->getConfig()->get( 'MiserMode' ) ) {
  55                         $this->dieUsage( 'Size difference is disabled in Miser Mode', 'sizediffdisabled' );
  56                 }
  57
  58                 $msg = wfMessage( 'Contributions' )->inContentLanguage()->text();
  59                 $feedTitle = $config->get( 'Sitename' ) . ' - ' . $msg .
  60                         ' [' . $config->get( 'LanguageCode' ) . ']';
  61                 $feedUrl = SpecialPage::getTitleFor( 'Contributions', $params['user'] )->getFullURL();
  62
  63                 $target = $params['user'] == 'newbies'
  64                         ? 'newbies'
  65                         : Title::makeTitleSafe( NS_USER, $params['user'] )->getText();
  66
  67                 $feed = new $feedClasses[$params['feedformat']] (
  68                         $feedTitle,
  69                         htmlspecialchars( $msg ),
  70                         $feedUrl
  71                 );
  72
  73                 $pager = new ContribsPager( $this->getContext(), array(
  74                         'target' => $target,
  75                         'namespace' => $params['namespace'],
  76                         'year' => $params['year'],
  77                         'month' => $params['month'],
  78                         'tagFilter' => $params['tagfilter'],
  79                         'deletedOnly' => $params['deletedonly'],
  80                         'topOnly' => $params['toponly'],
  81                         'newOnly' => $params['newonly'],
  82                         'showSizeDiff' => $params['showsizediff'],
  83                 ) );
  84
  85                 $feedLimit = $this->getConfig()->get( 'FeedLimit' );
  86                 if ( $pager->getLimit() > $feedLimit ) {
  87                         $pager->setLimit( $feedLimit );
  88                 }
  89
  90                 $feedItems = array();
  91                 if ( $pager->getNumRows() > 0 ) {
  92                         $count = 0;
  93                         $limit = $pager->getLimit();
  94                         foreach ( $pager->mResult as $row ) {
  95                                 // ContribsPager selects one more row for navigation, skip that row
  96                                 if ( ++$count > $limit ) {
  97                                         break;
  98                                 }
  99                                 $item = $this->feedItem( $row );
 100                                 if ( $item !== null ) {
 101                                         $feedItems[] = $item;
 102                                 }
 103                         }
 104                 }
 105
 106                 ApiFormatFeedWrapper::setResult( $this->getResult(), $feed, $feedItems );
 107         }
 108
 109         protected function feedItem( $row ) {
 110                 // This hook is the api contributions equivalent to the
 111                 // ContributionsLineEnding hook. Hook implementers may cancel
 112                 // the hook to signal the user is not allowed to read this item.
 113                 $feedItem = null;
 114                 $hookResult = Hooks::run(
 115                         'ApiFeedContributions::feedItem',
 116                         array( $row, $this->getContext(), &$feedItem )
 117                 );
 118                 // Hook returned a valid feed item
 119                 if ( $feedItem instanceof FeedItem ) {
 120                         return $feedItem;
 121                 // Hook was canceled and did not return a valid feed item
 122                 } elseif ( !$hookResult ) {
 123                         return null;
 124                 }
 125
 126                 // Hook completed and did not return a valid feed item
 127                 $title = Title::makeTitle( intval( $row->page_namespace ), $row->page_title );
 128                 if ( $title && $title->userCan( 'read', $this->getUser() ) ) {
 129                         $date = $row->rev_timestamp;
 130                         $comments = $title->getTalkPage()->getFullURL();
 131                         $revision = Revision::newFromRow( $row );
 132
 133                         return new FeedItem(
 134                                 $title->getPrefixedText(),
 135                                 $this->feedItemDesc( $revision ),
 136                                 $title->getFullURL( array( 'diff' => $revision->getId() ) ),
 137                                 $date,
 138                                 $this->feedItemAuthor( $revision ),
 139                                 $comments
 140                         );
 141                 }
 142
 143                 return null;
 144         }
 145
 146         /**
 147          * @param Revision $revision
 148          * @return string
 149          */
 150         protected function feedItemAuthor( $revision ) {
 151                 return $revision->getUserText();
 152         }
 153
 154         /**
 155          * @param Revision $revision
 156          * @return string
 157          */
 158         protected function feedItemDesc( $revision ) {
 159                 if ( $revision ) {
 160                         $msg = wfMessage( 'colon-separator' )->inContentLanguage()->text();
 161                         $content = $revision->getContent();
 162
 163                         if ( $content instanceof TextContent ) {
 164                                 // only textual content has a "source view".
 165                                 $html = nl2br( htmlspecialchars( $content->getNativeData() ) );
 166                         } else {
 167                                 // XXX: we could get an HTML representation of the content via getParserOutput, but that may
 168                                 //     contain JS magic and generally may not be suitable for inclusion in a feed.
 169                                 //     Perhaps Content should have a getDescriptiveHtml method and/or a getSourceText method.
 170                                 // Compare also FeedUtils::formatDiffRow.
 171                                 $html = '';
 172                         }
 173
 174                         return '<p>' . htmlspecialchars( $revision->getUserText() ) . $msg .
 175                                 htmlspecialchars( FeedItem::stripComment( $revision->getComment() ) ) .
 176                                 "</p>\n<hr />\n<div>" . $html . "</div>";
 177                 }
 178
 179                 return '';
 180         }
 181
 182         public function getAllowedParams() {
 183                 $feedFormatNames = array_keys( $this->getConfig()->get( 'FeedClasses' ) );
 184
 185                 $ret = array(
 186                         'feedformat' => array(
 187                                 ApiBase::PARAM_DFLT => 'rss',
 188                                 ApiBase::PARAM_TYPE => $feedFormatNames
 189                         ),
 190                         'user' => array(
 191                                 ApiBase::PARAM_TYPE => 'user',
 192                                 ApiBase::PARAM_REQUIRED => true,
 193                         ),
 194                         'namespace' => array(
 195                                 ApiBase::PARAM_TYPE => 'namespace'
 196                         ),
 197                         'year' => array(
 198                                 ApiBase::PARAM_TYPE => 'integer'
 199                         ),
 200                         'month' => array(
 201                                 ApiBase::PARAM_TYPE => 'integer'
 202                         ),
 203                         'tagfilter' => array(
 204                                 ApiBase::PARAM_ISMULTI => true,
 205                                 ApiBase::PARAM_TYPE => array_values( ChangeTags::listDefinedTags() ),
 206                                 ApiBase::PARAM_DFLT => '',
 207                         ),
 208                         'deletedonly' => false,
 209                         'toponly' => false,
 210                         'newonly' => false,
 211                         'showsizediff' => array(
 212                                 ApiBase::PARAM_DFLT => false,
 213                         ),
 214                 );
 215
 216                 if ( $this->getConfig()->get( 'MiserMode' ) ) {
 217                         $ret['showsizediff'][ApiBase::PARAM_HELP_MSG] = 'api-help-param-disabled-in-miser-mode';
 218                 }
 219
 220                 return $ret;
 221         }
 222
 223         protected function getExamplesMessages() {
 224                 return array(
 225                         'action=feedcontributions&user=Example'
 226                                 => 'apihelp-feedcontributions-example-simple',
 227                 );
 228         }
 229 }