includes/specials/SpecialFileDuplicateSearch.php

   1 <?php
   2 /**
   3  * Implements Special:FileDuplicateSearch
   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 Raimond Spekking, based on Special:MIMESearch by Ævar Arnfjörð Bjarmason
  23  */
  24
  25 /**
  26  * Searches the database for files of the requested hash, comparing this with the
  27  * 'img_sha1' field in the image table.
  28  *
  29  * @ingroup SpecialPage
  30  */
  31 class FileDuplicateSearchPage extends QueryPage {
  32         protected $hash = '', $filename = '';
  33
  34         /**
  35          * @var File $file selected reference file, if present
  36          */
  37         protected $file = null;
  38
  39         function __construct( $name = 'FileDuplicateSearch' ) {
  40                 parent::__construct( $name );
  41         }
  42
  43         function isSyndicated() { return false; }
  44         function isCacheable() { return false; }
  45         function isCached() { return false; }
  46
  47         function linkParameters() {
  48                 return array( 'filename' => $this->filename );
  49         }
  50
  51         /**
  52          * Fetch dupes from all connected file repositories.
  53          *
  54          * @return Array of File objects
  55          */
  56         function getDupes() {
  57                 return RepoGroup::singleton()->findBySha1( $this->hash );
  58         }
  59
  60         /**
  61          *
  62          * @param Array of File objects $dupes
  63          */
  64         function showList( $dupes ) {
  65                 global $wgUser, $wgOut;
  66                 $skin = $wgUser->getSkin();
  67
  68                 $html = array();
  69                 $html[] = $this->openList( 0 );
  70
  71                 foreach ( $dupes as $dupe ) {
  72                         $line = $this->formatResult( $skin, $dupe );
  73                         $html[] = "<li>" . $line . "</li>";
  74                 }
  75                 $html[] = $this->closeList();
  76
  77                 $wgOut->addHtml( implode( "\n", $html ) );
  78         }
  79
  80         function getQueryInfo() {
  81                 return array(
  82                         'tables' => array( 'image' ),
  83                         'fields' => array(
  84                                 'img_name AS title',
  85                                 'img_sha1 AS value',
  86                                 'img_user_text',
  87                                 'img_timestamp'
  88                         ),
  89                         'conds' => array( 'img_sha1' => $this->hash )
  90                 );
  91         }
  92
  93         function execute( $par ) {
  94                 global $wgRequest, $wgOut, $wgLang, $wgContLang, $wgScript;
  95
  96                 $this->setHeaders();
  97                 $this->outputHeader();
  98
  99                 $this->filename =  isset( $par ) ?  $par : $wgRequest->getText( 'filename' );
 100                 $this->file = null;
 101                 $this->hash = '';
 102                 $title = Title::newFromText( $this->filename, NS_FILE );
 103                 if( $title && $title->getText() != '' ) {
 104                         $this->file = wfFindFile( $title );
 105                 }
 106
 107                 # Create the input form
 108                 $wgOut->addHTML(
 109                         Xml::openElement( 'form', array( 'id' => 'fileduplicatesearch', 'method' => 'get', 'action' => $wgScript ) ) .
 110                         Html::hidden( 'title', $this->getTitle()->getPrefixedDbKey() ) .
 111                         Xml::openElement( 'fieldset' ) .
 112                         Xml::element( 'legend', null, wfMsg( 'fileduplicatesearch-legend' ) ) .
 113                         Xml::inputLabel( wfMsg( 'fileduplicatesearch-filename' ), 'filename', 'filename', 50, $this->filename ) . ' ' .
 114                         Xml::submitButton( wfMsg( 'fileduplicatesearch-submit' ) ) .
 115                         Xml::closeElement( 'fieldset' ) .
 116                         Xml::closeElement( 'form' )
 117                 );
 118
 119                 if( $this->file ) {
 120                         $this->hash = $this->file->getSha1();
 121                 } else {
 122                         $wgOut->wrapWikiMsg(
 123                                 "<p class='mw-fileduplicatesearch-noresults'>\n$1\n</p>",
 124                                 array( 'fileduplicatesearch-noresults', wfEscapeWikiText( $this->filename ) )
 125                         );
 126                 }
 127
 128                 if( $this->hash != '' ) {
 129                         $align = $wgContLang->alignEnd();
 130
 131                         # Show a thumbnail of the file
 132                         $img = $this->file;
 133                         if ( $img ) {
 134                                 $thumb = $img->transform( array( 'width' => 120, 'height' => 120 ) );
 135                                 if( $thumb ) {
 136                                         $wgOut->addHTML( '<div style="float:' . $align . '" id="mw-fileduplicatesearch-icon">' .
 137                                                 $thumb->toHtml( array( 'desc-link' => false ) ) . '<br />' .
 138                                                 wfMsgExt( 'fileduplicatesearch-info', array( 'parse' ),
 139                                                         $wgLang->formatNum( $img->getWidth() ),
 140                                                         $wgLang->formatNum( $img->getHeight() ),
 141                                                         $wgLang->formatSize( $img->getSize() ),
 142                                                         $img->getMimeType()
 143                                                 ) .
 144                                                 '</div>' );
 145                                 }
 146                         }
 147
 148                         $dupes = $this->getDupes();
 149                         $numRows = count( $dupes );
 150
 151                         # Show a short summary
 152                         if( $numRows == 1 ) {
 153                                 $wgOut->wrapWikiMsg(
 154                                         "<p class='mw-fileduplicatesearch-result-1'>\n$1\n</p>",
 155                                         array( 'fileduplicatesearch-result-1', wfEscapeWikiText( $this->filename ) )
 156                                 );
 157                         } elseif ( $numRows ) {
 158                                 $wgOut->wrapWikiMsg(
 159                                         "<p class='mw-fileduplicatesearch-result-n'>\n$1\n</p>",
 160                                         array( 'fileduplicatesearch-result-n', wfEscapeWikiText( $this->filename ),
 161                                                 $wgLang->formatNum( $numRows - 1 ) )
 162                                 );
 163                         }
 164
 165                         $this->showList( $dupes );
 166                 }
 167         }
 168
 169         /**
 170          *
 171          * @param Skin $skin
 172          * @param File $result
 173          * @return string
 174          */
 175         function formatResult( $skin, $result ) {
 176                 global $wgContLang, $wgLang;
 177
 178                 $nt = $result->getTitle();
 179                 $text = $wgContLang->convert( $nt->getText() );
 180                 $plink = $skin->link(
 181                         Title::newFromText( $nt->getPrefixedText() ),
 182                         $text
 183                 );
 184
 185                 $userText = $result->getUser( 'text' );
 186                 $user = $skin->link( Title::makeTitle( NS_USER, $userText ), $userText );
 187                 $time = $wgLang->timeanddate( $result->getTimestamp() );
 188
 189                 return "$plink . . $user . . $time";
 190         }
 191 }