includes/specials/SpecialMIMEsearch.php

   1 <?php
   2 /**
   3  * Implements Special:MIMESearch
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  * http://www.gnu.org/copyleft/gpl.html
  19  *
  20  * @file
  21  * @ingroup SpecialPage
  22  * @author Ævar Arnfjörð Bjarmason <avarab@gmail.com>
  23  */
  24
  25 /**
  26  * Searches the database for files of the requested MIME type, comparing this with the
  27  * 'img_major_mime' and 'img_minor_mime' fields in the image table.
  28  * @ingroup SpecialPage
  29  */
  30 class MIMEsearchPage extends QueryPage {
  31         protected $major, $minor, $mime;
  32
  33         function __construct( $name = 'MIMEsearch' ) {
  34                 parent::__construct( $name );
  35         }
  36
  37         function isExpensive() {
  38                 return false;
  39         }
  40
  41         function isSyndicated() {
  42                 return false;
  43         }
  44
  45         function isCacheable() {
  46                 return false;
  47         }
  48
  49         function linkParameters() {
  50                 return array( 'mime' => "{$this->major}/{$this->minor}" );
  51         }
  52
  53         public function getQueryInfo() {
  54                 $minorType = array();
  55                 if ( $this->minor !== '*' ) {
  56                         // Allow wildcard searching
  57                         $minorType['img_minor_mime'] = $this->minor;
  58                 }
  59                 $qi = array(
  60                         'tables' => array( 'image' ),
  61                         'fields' => array(
  62                                 'namespace' => NS_FILE,
  63                                 'title' => 'img_name',
  64                                 // Still have a value field just in case,
  65                                 // but it isn't actually used for sorting.
  66                                 'value' => 'img_name',
  67                                 'img_size',
  68                                 'img_width',
  69                                 'img_height',
  70                                 'img_user_text',
  71                                 'img_timestamp'
  72                         ),
  73                         'conds' => array(
  74                                 'img_major_mime' => $this->major,
  75                                 // This is in order to trigger using
  76                                 // the img_media_mime index in "range" mode.
  77                                 'img_media_type' => array(
  78                                         MEDIATYPE_BITMAP,
  79                                         MEDIATYPE_DRAWING,
  80                                         MEDIATYPE_AUDIO,
  81                                         MEDIATYPE_VIDEO,
  82                                         MEDIATYPE_MULTIMEDIA,
  83                                         MEDIATYPE_UNKNOWN,
  84                                         MEDIATYPE_OFFICE,
  85                                         MEDIATYPE_TEXT,
  86                                         MEDIATYPE_EXECUTABLE,
  87                                         MEDIATYPE_ARCHIVE,
  88                                 ),
  89                         ) + $minorType,
  90                 );
  91
  92                 return $qi;
  93         }
  94
  95         /**
  96          * The index is on (img_media_type, img_major_mime, img_minor_mime)
  97          * which unfortunately doesn't have img_name at the end for sorting.
  98          * So tell db to sort it however it wishes (Its not super important
  99          * that this report gives results in a logical order). As an aditional
 100          * note, mysql seems to by default order things by img_name ASC, which
 101          * is what we ideally want, so everything works out fine anyhow.
 102          * @return array
 103          */
 104         function getOrderFields() {
 105                 return array();
 106         }
 107
 108         /**
 109          * Return HTML to put just before the results.
 110          */
 111         function getPageHeader() {
 112                 return Xml::openElement(
 113                                 'form',
 114                                 array( 'id' => 'specialmimesearch', 'method' => 'get', 'action' => wfScript() )
 115                         ) .
 116                         Xml::openElement( 'fieldset' ) .
 117                         Html::hidden( 'title', $this->getPageTitle()->getPrefixedText() ) .
 118                         Xml::element( 'legend', null, $this->msg( 'mimesearch' )->text() ) .
 119                         Xml::inputLabel( $this->msg( 'mimetype' )->text(), 'mime', 'mime', 20, $this->mime ) .
 120                         ' ' .
 121                         Xml::submitButton( $this->msg( 'ilsubmit' )->text() ) .
 122                                         Xml::closeElement( 'fieldset' ) .
 123                                         Xml::closeElement( 'form' );
 124         }
 125
 126         function execute( $par ) {
 127                 $this->mime = $par ? $par : $this->getRequest()->getText( 'mime' );
 128                 $this->mime = trim( $this->mime );
 129                 list( $this->major, $this->minor ) = File::splitMime( $this->mime );
 130
 131                 if ( $this->major == '' || $this->minor == '' || $this->minor == 'unknown' ||
 132                         !self::isValidType( $this->major )
 133                 ) {
 134                         $this->setHeaders();
 135                         $this->outputHeader();
 136                         $this->getOutput()->addHTML( $this->getPageHeader() );
 137                         return;
 138                 }
 139
 140                 parent::execute( $par );
 141         }
 142
 143         /**
 144          * @param Skin $skin
 145          * @param object $result Result row
 146          * @return string
 147          */
 148         function formatResult( $skin, $result ) {
 149                 global $wgContLang;
 150
 151                 $nt = Title::makeTitle( $result->namespace, $result->title );
 152                 $text = $wgContLang->convert( $nt->getText() );
 153                 $plink = Linker::link(
 154                         Title::newFromText( $nt->getPrefixedText() ),
 155                         htmlspecialchars( $text )
 156                 );
 157
 158                 $download = Linker::makeMediaLinkObj( $nt, $this->msg( 'download' )->escaped() );
 159                 $download = $this->msg( 'parentheses' )->rawParams( $download )->escaped();
 160                 $lang = $this->getLanguage();
 161                 $bytes = htmlspecialchars( $lang->formatSize( $result->img_size ) );
 162                 $dimensions = $this->msg( 'widthheight' )->numParams( $result->img_width,
 163                         $result->img_height )->escaped();
 164                 $user = Linker::link(
 165                         Title::makeTitle( NS_USER, $result->img_user_text ),
 166                         htmlspecialchars( $result->img_user_text )
 167                 );
 168
 169                 $time = $lang->userTimeAndDate( $result->img_timestamp, $this->getUser() );
 170                 $time = htmlspecialchars( $time );
 171
 172                 return "$download $plink . . $dimensions . . $bytes . . $user . . $time";
 173         }
 174
 175         /**
 176          * @param string $type
 177          * @return bool
 178          */
 179         protected static function isValidType( $type ) {
 180                 // From maintenance/tables.sql => img_major_mime
 181                 $types = array(
 182                         'unknown',
 183                         'application',
 184                         'audio',
 185                         'image',
 186                         'text',
 187                         'video',
 188                         'message',
 189                         'model',
 190                         'multipart',
 191                         'chemical'
 192                 );
 193
 194                 return in_array( $type, $types );
 195         }
 196
 197         protected function getGroupName() {
 198                 return 'media';
 199         }
 200 }