includes/SpecialMIMEsearch.php

   1 <?php
   2 /**
   3  * A special page to search for files by MIME type as defined in the
   4  * img_major_mime and img_minor_mime fields in the image table
   5  *
   6  * @addtogroup SpecialPage
   7  *
   8  * @author Ævar Arnfjörð Bjarmason <avarab@gmail.com>
   9  * @license http://www.gnu.org/copyleft/gpl.html GNU General Public License 2.0 or later
  10  */
  11
  12 /**
  13  * Searches the database for files of the requested MIME type, comparing this with the
  14  * 'img_major_mime' and 'img_minor_mime' fields in the image table.
  15  * @addtogroup SpecialPage
  16  */
  17 class MIMEsearchPage extends QueryPage {
  18         var $major, $minor;
  19
  20         function MIMEsearchPage( $major, $minor ) {
  21                 $this->major = $major;
  22                 $this->minor = $minor;
  23         }
  24
  25         function getName() { return 'MIMEsearch'; }
  26
  27         /**
  28          * Due to this page relying upon extra fields being passed in the SELECT it
  29          * will fail if it's set as expensive and misermode is on
  30          */
  31         function isExpensive() { return true; }
  32         function isSyndicated() { return false; }
  33
  34         function linkParameters() {
  35                 $arr = array( $this->major, $this->minor );
  36                 $mime = implode( '/', $arr );
  37                 return array( 'mime' => $mime );
  38         }
  39
  40         function getSQL() {
  41                 $dbr = wfGetDB( DB_SLAVE );
  42                 $image = $dbr->tableName( 'image' );
  43                 $major = $dbr->addQuotes( $this->major );
  44                 $minor = $dbr->addQuotes( $this->minor );
  45
  46                 return
  47                         "SELECT 'MIMEsearch' AS type,
  48                                 " . NS_IMAGE . " AS namespace,
  49                                 img_name AS title,
  50                                 img_major_mime AS value,
  51
  52                                 img_size,
  53                                 img_width,
  54                                 img_height,
  55                                 img_user_text,
  56                                 img_timestamp
  57                         FROM $image
  58                         WHERE img_major_mime = $major AND img_minor_mime = $minor
  59                         ";
  60         }
  61
  62         function formatResult( $skin, $result ) {
  63                 global $wgContLang, $wgLang;
  64
  65                 $nt = Title::makeTitle( $result->namespace, $result->title );
  66                 $text = $wgContLang->convert( $nt->getText() );
  67                 $plink = $skin->makeLink( $nt->getPrefixedText(), $text );
  68
  69                 $download = $skin->makeMediaLinkObj( $nt, wfMsgHtml( 'download' ) );
  70                 $bytes = wfMsgExt( 'nbytes', array( 'parsemag', 'escape'),
  71                         $wgLang->formatNum( $result->img_size ) );
  72                 $dimensions = wfMsgHtml( 'widthheight', $wgLang->formatNum( $result->img_width ),
  73                         $wgLang->formatNum( $result->img_height ) );
  74                 $user = $skin->makeLinkObj( Title::makeTitle( NS_USER, $result->img_user_text ), $result->img_user_text );
  75                 $time = $wgLang->timeanddate( $result->img_timestamp );
  76
  77                 return "($download) $plink . . $dimensions . . $bytes . . $user . . $time";
  78         }
  79 }
  80
  81 /**
  82  * Output the HTML search form, and constructs the MIMEsearchPage object.
  83  */
  84 function wfSpecialMIMEsearch( $par = null ) {
  85         global $wgRequest, $wgTitle, $wgOut;
  86
  87         $mime = isset( $par ) ? $par : $wgRequest->getText( 'mime' );
  88
  89         $wgOut->addHTML(
  90                 Xml::openElement( 'form',
  91                         array(
  92                                 'id' => 'specialmimesearch',
  93                                 'method' => 'get',
  94                                 'action' => $wgTitle->escapeLocalUrl()
  95                         )
  96                 ) .
  97                         Xml::inputLabel( wfMsg( 'mimetype' ), 'mime', 'mime', 20, $mime ) .
  98                         Xml::submitButton( wfMsg( 'ilsubmit' ) ) .
  99                 Xml::closeElement( 'form' )
 100         );
 101
 102         list( $major, $minor ) = wfSpecialMIMEsearchParse( $mime );
 103         if ( $major == '' or $minor == '' or !wfSpecialMIMEsearchValidType( $major ) )
 104                 return;
 105         $wpp = new MIMEsearchPage( $major, $minor );
 106
 107         list( $limit, $offset ) = wfCheckLimits();
 108         $wpp->doQuery( $offset, $limit );
 109 }
 110
 111 function wfSpecialMIMEsearchParse( $str ) {
 112         // searched for an invalid MIME type.
 113         if( strpos( $str, '/' ) === false) {
 114                 return array ('', '');
 115         }
 116
 117         list( $major, $minor ) = explode( '/', $str, 2 );
 118
 119         return array(
 120                 ltrim( $major, ' ' ),
 121                 rtrim( $minor, ' ' )
 122         );
 123 }
 124
 125 function wfSpecialMIMEsearchValidType( $type ) {
 126         // From maintenance/tables.sql => img_major_mime
 127         $types = array(
 128                 'unknown',
 129                 'application',
 130                 'audio',
 131                 'image',
 132                 'text',
 133                 'video',
 134                 'message',
 135                 'model',
 136                 'multipart'
 137         );
 138
 139         return in_array( $type, $types );
 140 }
 141