155 lines
No EOL
4.7 KiB
PHP
155 lines
No EOL
4.7 KiB
PHP
<?php
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// TODO: document
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class FeedUtils {
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public static function checkPurge( $timekey, $key ) {
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global $wgRequest, $wgUser, $messageMemc;
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$purge = $wgRequest->getVal( 'action' ) === 'purge';
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if ( $purge && $wgUser->isAllowed('purge') ) {
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$messageMemc->delete( $timekey );
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$messageMemc->delete( $key );
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}
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}
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public static function checkFeedOutput( $type ) {
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global $wgFeed, $wgOut, $wgFeedClasses;
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if ( !$wgFeed ) {
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global $wgOut;
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$wgOut->addWikiMsg( 'feed-unavailable' );
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return false;
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}
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if( !isset( $wgFeedClasses[$type] ) ) {
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wfHttpError( 500, "Internal Server Error", "Unsupported feed type." );
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return false;
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}
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return true;
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}
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/**
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* Format a diff for the newsfeed
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*/
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public static function formatDiff( $row ) {
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global $wgUser;
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$titleObj = Title::makeTitle( $row->rc_namespace, $row->rc_title );
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$timestamp = wfTimestamp( TS_MW, $row->rc_timestamp );
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$actiontext = '';
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if( $row->rc_type == RC_LOG ) {
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if( $row->rc_deleted & LogPage::DELETED_ACTION ) {
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$actiontext = wfMsgHtml('rev-deleted-event');
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} else {
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$actiontext = LogPage::actionText( $row->rc_log_type, $row->rc_log_action,
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$titleObj, $wgUser->getSkin(), LogPage::extractParams($row->rc_params,true,true) );
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}
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}
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return self::formatDiffRow( $titleObj,
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$row->rc_last_oldid, $row->rc_this_oldid,
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$timestamp,
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($row->rc_deleted & Revision::DELETED_COMMENT) ? wfMsgHtml('rev-deleted-comment') : $row->rc_comment,
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$actiontext );
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}
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public static function formatDiffRow( $title, $oldid, $newid, $timestamp, $comment, $actiontext='' ) {
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global $wgFeedDiffCutoff, $wgContLang, $wgUser;
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wfProfileIn( __FUNCTION__ );
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$skin = $wgUser->getSkin();
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# log enties
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$completeText = '<p>' . implode( ' ',
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array_filter(
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array(
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$actiontext,
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$skin->formatComment( $comment ) ) ) ) . "</p>\n";
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//NOTE: Check permissions for anonymous users, not current user.
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// No "privileged" version should end up in the cache.
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// Most feed readers will not log in anway.
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$anon = new User();
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$accErrors = $title->getUserPermissionsErrors( 'read', $anon, true );
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if( $title->getNamespace() >= 0 && !$accErrors ) {
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if( $oldid ) {
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wfProfileIn( __FUNCTION__."-dodiff" );
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#$diffText = $de->getDiff( wfMsg( 'revisionasof',
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# $wgContLang->timeanddate( $timestamp ) ),
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# wfMsg( 'currentrev' ) );
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// Don't bother generating the diff if we won't be able to show it
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if ( $wgFeedDiffCutoff > 0 ) {
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$de = new DifferenceEngine( $title, $oldid, $newid );
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$diffText = $de->getDiff(
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wfMsg( 'previousrevision' ), // hack
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wfMsg( 'revisionasof',
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$wgContLang->timeanddate( $timestamp ) ) );
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}
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if ( ( strlen( $diffText ) > $wgFeedDiffCutoff ) || ( $wgFeedDiffCutoff <= 0 ) ) {
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// Omit large diffs
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$diffLink = $title->escapeFullUrl(
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'diff=' . $newid .
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'&oldid=' . $oldid );
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$diffText = '<a href="' .
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$diffLink .
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'">' .
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htmlspecialchars( wfMsgForContent( 'showdiff' ) ) .
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'</a>';
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} elseif ( $diffText === false ) {
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// Error in diff engine, probably a missing revision
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$diffText = "<p>Can't load revision $newid</p>";
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} else {
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// Diff output fine, clean up any illegal UTF-8
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$diffText = UtfNormal::cleanUp( $diffText );
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$diffText = self::applyDiffStyle( $diffText );
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}
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wfProfileOut( __FUNCTION__."-dodiff" );
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} else {
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$rev = Revision::newFromId( $newid );
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if( is_null( $rev ) ) {
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$newtext = '';
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} else {
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$newtext = $rev->getText();
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}
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$diffText = '<p><b>' . wfMsg( 'newpage' ) . '</b></p>' .
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'<div>' . nl2br( htmlspecialchars( $newtext ) ) . '</div>';
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}
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$completeText .= $diffText;
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}
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wfProfileOut( __FUNCTION__ );
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return $completeText;
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}
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/**
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* Hacky application of diff styles for the feeds.
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* Might be 'cleaner' to use DOM or XSLT or something,
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* but *gack* it's a pain in the ass.
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*
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* @param $text String:
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* @return string
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* @private
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*/
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public static function applyDiffStyle( $text ) {
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$styles = array(
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'diff' => 'background-color: white; color:black;',
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'diff-otitle' => 'background-color: white; color:black;',
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'diff-ntitle' => 'background-color: white; color:black;',
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'diff-addedline' => 'background: #cfc; color:black; font-size: smaller;',
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'diff-deletedline' => 'background: #ffa; color:black; font-size: smaller;',
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'diff-context' => 'background: #eee; color:black; font-size: smaller;',
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'diffchange' => 'color: red; font-weight: bold; text-decoration: none;',
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);
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foreach( $styles as $class => $style ) {
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$text = preg_replace( "/(<[^>]+)class=(['\"])$class\\2([^>]*>)/",
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"\\1style=\"$style\"\\3", $text );
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}
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return $text;
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}
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}
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