SpecialFileDuplicateSearch.php

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<?php
class FileDuplicateSearchPage extends QueryPage {
    protected $hash = '', $filename = '';

    protected $file = null;

    function __construct( $name = 'FileDuplicateSearch' ) {
        parent::__construct( $name );
    }

    function isSyndicated() {
        return false;
    }

    function isCacheable() {
        return false;
    }

    function isCached() {
        return false;
    }

    function linkParameters() {
        return array( 'filename' => $this->filename );
    }

    function getDupes() {
        return RepoGroup::singleton()->findBySha1( $this->hash );
    }

    function showList( $dupes ) {
        $html = array();
        $html[] = $this->openList( 0 );

        foreach ( $dupes as $dupe ) {
            $line = $this->formatResult( null, $dupe );
            $html[] = "<li>" . $line . "</li>";
        }
        $html[] = $this->closeList();

        $this->getOutput()->addHtml( implode( "\n", $html ) );
    }

    function getQueryInfo() {
        return array(
            'tables' => array( 'image' ),
            'fields' => array(
                'title' => 'img_name',
                'value' => 'img_sha1',
                'img_user_text',
                'img_timestamp'
            ),
            'conds' => array( 'img_sha1' => $this->hash )
        );
    }

    function execute( $par ) {
        $this->setHeaders();
        $this->outputHeader();

        $this->filename = $par !== null ? $par : $this->getRequest()->getText( 'filename' );
        $this->file = null;
        $this->hash = '';
        $title = Title::newFromText( $this->filename, NS_FILE );
        if ( $title && $title->getText() != '' ) {
            $this->file = wfFindFile( $title );
        }

        $out = $this->getOutput();

        # Create the input form
        $out->addHTML(
            Html::openElement(
                'form',
                array( 'id' => 'fileduplicatesearch', 'method' => 'get', 'action' => wfScript() )
            ) . "\n" .
                Html::hidden( 'title', $this->getPageTitle()->getPrefixedDBkey() ) . "\n" .
                Html::openElement( 'fieldset' ) . "\n" .
                Html::element( 'legend', null, $this->msg( 'fileduplicatesearch-legend' )->text() ) . "\n" .
                Xml::inputLabel(
                    $this->msg( 'fileduplicatesearch-filename' )->text(),
                    'filename',
                    'filename',
                    50,
                    $this->filename
                ) . "\n" .
                Xml::submitButton( $this->msg( 'fileduplicatesearch-submit' )->text() ) . "\n" .
                Html::closeElement( 'fieldset' ) . "\n" .
                Html::closeElement( 'form' )
        );

        if ( $this->file ) {
            $this->hash = $this->file->getSha1();
        } elseif ( $this->filename !== '' ) {
            $out->wrapWikiMsg(
                "<p class='mw-fileduplicatesearch-noresults'>\n$1\n</p>",
                array( 'fileduplicatesearch-noresults', wfEscapeWikiText( $this->filename ) )
            );
        }

        if ( $this->hash != '' ) {
            # Show a thumbnail of the file
            $img = $this->file;
            if ( $img ) {
                $thumb = $img->transform( array( 'width' => 120, 'height' => 120 ) );
                if ( $thumb ) {
                    $out->addHTML( '<div id="mw-fileduplicatesearch-icon">' .
                        $thumb->toHtml( array( 'desc-link' => false ) ) . '<br />' .
                        $this->msg( 'fileduplicatesearch-info' )->numParams(
                            $img->getWidth(), $img->getHeight() )->params(
                                $this->getLanguage()->formatSize( $img->getSize() ),
                                $img->getMimeType() )->parseAsBlock() .
                        '</div>' );
                }
            }

            $dupes = $this->getDupes();
            $numRows = count( $dupes );

            # Show a short summary
            if ( $numRows == 1 ) {
                $out->wrapWikiMsg(
                    "<p class='mw-fileduplicatesearch-result-1'>\n$1\n</p>",
                    array( 'fileduplicatesearch-result-1', wfEscapeWikiText( $this->filename ) )
                );
            } elseif ( $numRows ) {
                $out->wrapWikiMsg(
                    "<p class='mw-fileduplicatesearch-result-n'>\n$1\n</p>",
                    array( 'fileduplicatesearch-result-n', wfEscapeWikiText( $this->filename ),
                        $this->getLanguage()->formatNum( $numRows - 1 ) )
                );
            }

            $this->doBatchLookups( $dupes );
            $this->showList( $dupes );
        }
    }

    function doBatchLookups( $list ) {
        $batch = new LinkBatch();
        foreach ( $list as $file ) {
            $batch->addObj( $file->getTitle() );
            if ( $file->isLocal() ) {
                $userName = $file->getUser( 'text' );
                $batch->add( NS_USER, $userName );
                $batch->add( NS_USER_TALK, $userName );
            }
        }

        $batch->execute();
    }

    function formatResult( $skin, $result ) {
        global $wgContLang;

        $nt = $result->getTitle();
        $text = $wgContLang->convert( $nt->getText() );
        $plink = Linker::link(
            Title::newFromText( $nt->getPrefixedText() ),
            $text
        );

        $userText = $result->getUser( 'text' );
        if ( $result->isLocal() ) {
            $userId = $result->getUser( 'id' );
            $user = Linker::userLink( $userId, $userText );
            $user .= $this->getContext()->msg( 'word-separator' )->plain();
            $user .= '<span style="white-space: nowrap;">';
            $user .= Linker::userToolLinks( $userId, $userText );
            $user .= '</span>';
        } else {
            $user = htmlspecialchars( $userText );
        }

        $time = $this->getLanguage()->userTimeAndDate( $result->getTimestamp(), $this->getUser() );

        return "$plink . . $user . . $time";
    }

    protected function getGroupName() {
        return 'media';
    }
}