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<?php
/**
* Redirect from Special:Diff/### to index.php?diff=### and
* from Special:Diff/###/### to index.php?oldid=###&diff=###.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
* http://www.gnu.org/copyleft/gpl.html
*
* @file
* @ingroup SpecialPage
*/
/**
* Redirect from Special:Diff/### to index.php?diff=### and
* from Special:Diff/###/### to index.php?oldid=###&diff=###.
*
* All of the following are valid usages:
* - [[Special:Diff/12345]] (diff of a revision with the previous one)
* - [[Special:Diff/12345/prev]] (diff of a revision with the previous one as well)
* - [[Special:Diff/12345/next]] (diff of a revision with the next one)
* - [[Special:Diff/12345/cur]] (diff of a revision with the latest one of that page)
* - [[Special:Diff/12345/98765]] (diff between arbitrary two revisions)
*
* @ingroup SpecialPage
* @since 1.23
*/
class SpecialDiff extends RedirectSpecialPage {
function __construct() {
parent::__construct( 'Diff' );
$this->mAllowedRedirectParams = array();
}
function getRedirect( $subpage ) {
$parts = explode( '/', $subpage );
// Try to parse the values given, generating somewhat pretty URLs if possible
if ( count( $parts ) === 1 && $parts[0] !== '' ) {
$this->mAddedRedirectParams['diff'] = $parts[0];
} elseif ( count( $parts ) === 2 ) {
$this->mAddedRedirectParams['oldid'] = $parts[0];
$this->mAddedRedirectParams['diff'] = $parts[1];
} else {
// Wrong number of parameters, bail out
$this->addHelpLink( 'Help:Diff' );
throw new ErrorPageError( 'nopagetitle', 'nopagetext' );
}
return true;
}
}
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