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         var $major, $minor;
  32
  33         function __construct( $major, $minor ) {
  34                 $this->major = $major;
  35                 $this->minor = $minor;
  36         }
  37
  38         function getName() { return 'MIMEsearch'; }
  39
  40         /**
  41          * Due to this page relying upon extra fields being passed in the SELECT it
  42          * will fail if it's set as expensive and misermode is on
  43          */
  44         function isExpensive() { return true; }
  45         function isSyndicated() { return false; }
  46
  47         function linkParameters() {
  48                 $arr = array( $this->major, $this->minor );
  49                 $mime = implode( '/', $arr );
  50                 return array( 'mime' => $mime );
  51         }
  52
  53         function getSQL() {
  54                 $dbr = wfGetDB( DB_SLAVE );
  55                 $image = $dbr->tableName( 'image' );
  56                 $major = $dbr->addQuotes( $this->major );
  57                 $minor = $dbr->addQuotes( $this->minor );
  58
  59                 return
  60                         "SELECT 'MIMEsearch' AS type,
  61                                 " . NS_FILE . " AS namespace,
  62                                 img_name AS title,
  63                                 img_major_mime AS value,
  64
  65                                 img_size,
  66                                 img_width,
  67                                 img_height,
  68                                 img_user_text,
  69                                 img_timestamp
  70                         FROM $image
  71                         WHERE img_major_mime = $major AND img_minor_mime = $minor
  72                         ";
  73         }
  74
  75         function formatResult( $skin, $result ) {
  76                 global $wgContLang, $wgLang;
  77
  78                 $nt = Title::makeTitle( $result->namespace, $result->title );
  79                 $text = $wgContLang->convert( $nt->getText() );
  80                 $plink = $skin->link(
  81                         Title::newFromText( $nt->getPrefixedText() ),
  82                         htmlspecialchars( $text )
  83                 );
  84
  85                 $download = $skin->makeMediaLinkObj( $nt, wfMsgHtml( 'download' ) );
  86                 $bytes = wfMsgExt( 'nbytes', array( 'parsemag', 'escape'),
  87                         $wgLang->formatNum( $result->img_size ) );
  88                 $dimensions = htmlspecialchars( wfMsg( 'widthheight',
  89                         $wgLang->formatNum( $result->img_width ),
  90                         $wgLang->formatNum( $result->img_height )
  91                 ) );
  92                 $user = $skin->link( Title::makeTitle( NS_USER, $result->img_user_text ), htmlspecialchars( $result->img_user_text ) );
  93                 $time = htmlspecialchars( $wgLang->timeanddate( $result->img_timestamp ) );
  94
  95                 return "($download) $plink . . $dimensions . . $bytes . . $user . . $time";
  96         }
  97 }
  98
  99 /**
 100  * Output the HTML search form, and constructs the MIMEsearchPage object.
 101  */
 102 function wfSpecialMIMEsearch( $par = null ) {
 103         global $wgRequest, $wgOut;
 104
 105         $mime = isset( $par ) ? $par : $wgRequest->getText( 'mime' );
 106
 107         $wgOut->addHTML(
 108                 Xml::openElement( 'form', array( 'id' => 'specialmimesearch', 'method' => 'get', 'action' => SpecialPage::getTitleFor( 'MIMEsearch' )->getLocalUrl() ) ) .
 109                 Xml::openElement( 'fieldset' ) .
 110                 Xml::hidden( 'title', SpecialPage::getTitleFor( 'MIMEsearch' )->getPrefixedText() ) .
 111                 Xml::element( 'legend', null, wfMsg( 'mimesearch' ) ) .
 112                 Xml::inputLabel( wfMsg( 'mimetype' ), 'mime', 'mime', 20, $mime ) . ' ' .
 113                 Xml::submitButton( wfMsg( 'ilsubmit' ) ) .
 114                 Xml::closeElement( 'fieldset' ) .
 115                 Xml::closeElement( 'form' )
 116         );
 117
 118         list( $major, $minor ) = wfSpecialMIMEsearchParse( $mime );
 119         if ( $major == '' or $minor == '' or !wfSpecialMIMEsearchValidType( $major ) )
 120                 return;
 121         $wpp = new MIMEsearchPage( $major, $minor );
 122
 123         list( $limit, $offset ) = wfCheckLimits();
 124         $wpp->doQuery( $offset, $limit );
 125 }
 126
 127 function wfSpecialMIMEsearchParse( $str ) {
 128         // searched for an invalid MIME type.
 129         if( strpos( $str, '/' ) === false) {
 130                 return array ('', '');
 131         }
 132
 133         list( $major, $minor ) = explode( '/', $str, 2 );
 134
 135         return array(
 136                 ltrim( $major, ' ' ),
 137                 rtrim( $minor, ' ' )
 138         );
 139 }
 140
 141 function wfSpecialMIMEsearchValidType( $type ) {
 142         // From maintenance/tables.sql => img_major_mime
 143         $types = array(
 144                 'unknown',
 145                 'application',
 146                 'audio',
 147                 'image',
 148                 'text',
 149                 'video',
 150                 'message',
 151                 'model',
 152                 'multipart'
 153         );
 154
 155         return in_array( $type, $types );
 156 }