mediawiki-extensions-AbuseF.../Views/AbuseFilterViewDiff.php

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<?php
/**
* Like TableDiffFormatter, but will always render the full context
* (even for empty diffs).
*
* @private
*/
class TableDiffFormatterFullContext extends TableDiffFormatter {
/**
* Format a diff.
*
* @param Diff $diff
* @return string The formatted output.
*/
function format( $diff ) {
$xlen = $ylen = 0;
// Calculate the length of the left and the right side
foreach ( $diff->edits as $edit ) {
if ( $edit->orig ) {
$xlen += count( $edit->orig );
}
if ( $edit->closing ) {
$ylen += count( $edit->closing );
}
}
// Just render the diff with no preprocessing
$this->_start_diff();
$this->_block( 1, $xlen, 1, $ylen, $diff->edits );
$end = $this->_end_diff();
return $end;
}
}
class AbuseFilterViewDiff extends AbuseFilterView {
var $mOldVersion = null;
var $mNewVersion = null;
var $mNextHistoryId = null;
var $mFilter = null;
function show() {
$show = $this->loadData();
$out = $this->getOutput();
$links = array();
if ( $this->mFilter ) {
$links['abusefilter-history-backedit'] = $this->getTitle( $this->mFilter );
$links['abusefilter-diff-backhistory'] = $this->getTitle( 'history/' . $this->mFilter );
}
foreach ( $links as $msg => $title ) {
$links[$msg] = Linker::link( $title, $this->msg( $msg )->escaped() );
}
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$backlinks = $this->getLanguage()->pipeList( $links );
$out->addHTML( Xml::tags( 'p', null, $backlinks ) );
if ( $show ) {
$out->addHTML( $this->formatDiff() );
// Next and previous change links
$links = array();
if ( AbuseFilter::getFirstFilterChange( $this->mFilter ) != $this->mOldVersion['meta']['history_id'] ) {
// Create a "previous change" link if this isn't the first change of the given filter
$links[] = Linker::link(
$this->getTitle(
'history/' . $this->mFilter . '/diff/prev/' . $this->mOldVersion['meta']['history_id']
),
$this->getLanguage()->getArrow( 'backwards' ) . ' ' . $this->msg( 'abusefilter-diff-prev' )->escaped()
);
}
if ( !is_null( $this->mNextHistoryId ) ) {
// Create a "next change" link if this isn't the last change of the given filter
$links[] = Linker::link(
$this->getTitle(
'history/' . $this->mFilter . '/diff/prev/' . $this->mNextHistoryId
),
$this->msg( 'abusefilter-diff-next' )->escaped() . ' ' . $this->getLanguage()->getArrow( 'forwards' )
);
}
if ( count( $links ) > 0 ) {
$backlinks = $this->getLanguage()->pipeList( $links );
$out->addHTML( Xml::tags( 'p', null, $backlinks ) );
}
}
}
function loadData() {
$oldSpec = $this->mParams[3];
$newSpec = $this->mParams[4];
$this->mFilter = $this->mParams[1];
if ( AbuseFilter::filterHidden( $this->mFilter ) &&
!$this->getUser()->isAllowed( 'abusefilter-modify' ) &&
!$this->getUser()->isAllowed( 'abusefilter-view-private' ) ) {
$this->getOutput()->addWikiMsg( 'abusefilter-history-error-hidden' );
return false;
}
$this->mOldVersion = $this->loadSpec( $oldSpec, $newSpec );
$this->mNewVersion = $this->loadSpec( $newSpec, $oldSpec );
if ( is_null( $this->mOldVersion ) || is_null( $this->mNewVersion ) ) {
$this->getOutput()->addWikiMsg( 'abusefilter-diff-invalid' );
return false;
}
$this->mNextHistoryId = $this->getNextHistoryId( $this->mNewVersion['meta']['history_id'] , 'next' );
return true;
}
/**
* Get the history ID of the next change
*
* @param $historyId Integer: History id to find next change of
* @return Integer|Null: Id of the next change or null if there isn't one
*/
function getNextHistoryId( $historyId ) {
$dbr = wfGetDB( DB_SLAVE );
$row = $dbr->selectRow(
'abuse_filter_history',
'afh_id',
array(
'afh_filter' => $this->mFilter,
'afh_id > ' . $dbr->addQuotes( $historyId ),
),
__METHOD__,
array( 'ORDER BY' => 'afh_timestamp ASC' )
);
if ( $row ) {
return $row->afh_id;
}
return null;
}
function loadSpec( $spec, $otherSpec ) {
static $dependentSpecs = array( 'prev', 'next' );
static $cache = array();
if ( isset( $cache[$spec] ) )
return $cache[$spec];
$dbr = wfGetDB( DB_SLAVE );
if ( is_numeric( $spec ) ) {
$row = $dbr->selectRow(
'abuse_filter_history',
'*',
array( 'afh_id' => $spec, 'afh_filter' => $this->mFilter ),
__METHOD__
);
} elseif ( $spec == 'cur' ) {
$row = $dbr->selectRow(
'abuse_filter_history',
'*',
array( 'afh_filter' => $this->mFilter ),
__METHOD__,
array( 'ORDER BY' => 'afh_timestamp desc' )
);
} elseif ( $spec == 'prev' && !in_array( $otherSpec, $dependentSpecs ) ) {
// cached
$other = $this->loadSpec( $otherSpec, $spec );
$row = $dbr->selectRow(
'abuse_filter_history',
'*',
array(
'afh_filter' => $this->mFilter,
'afh_id<' . $dbr->addQuotes( $other['meta']['history_id'] ),
),
__METHOD__,
array( 'ORDER BY' => 'afh_timestamp desc' )
);
if ( $other && !$row ) {
$t = $this->getTitle(
'history/' . $this->mFilter . '/item/' . $other['meta']['history_id'] );
$this->getOutput()->redirect( $t->getFullURL() );
return null;
}
} elseif ( $spec == 'next' && !in_array( $otherSpec, $dependentSpecs ) ) {
// cached
$other = $this->loadSpec( $otherSpec, $spec );
$row = $dbr->selectRow(
'abuse_filter_history',
'*',
array(
'afh_filter' => $this->mFilter,
'afh_id>' . $dbr->addQuotes( $other['meta']['history_id'] ),
),
__METHOD__,
array( 'ORDER BY' => 'afh_timestamp ASC' )
);
if ( $other && !$row ) {
$t = $this->getTitle(
'history/' . $this->mFilter . '/item/' . $other['meta']['history_id'] );
$this->getOutput()->redirect( $t->getFullURL() );
return null;
}
}
if ( !$row ) {
return null;
}
$data = $this->loadFromHistoryRow( $row );
$cache[$spec] = $data;
return $data;
}
function loadFromHistoryRow( $row ) {
return array(
'meta' => array(
'history_id' => $row->afh_id,
'modified_by' => $row->afh_user,
'modified_by_text' => $row->afh_user_text,
'modified' => $row->afh_timestamp,
),
'info' => array(
'description' => $row->afh_public_comments,
'flags' => $row->afh_flags,
'notes' => $row->afh_comments,
'group' => $row->afh_group,
),
'pattern' => $row->afh_pattern,
'actions' => unserialize( $row->afh_actions ),
);
}
/**
* @param $timestamp
* @param $history_id
* @return string
*/
function formatVersionLink( $timestamp, $history_id ) {
$filter = $this->mFilter;
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$text = $this->getLanguage()->timeanddate( $timestamp, true );
$title = $this->getTitle( "history/$filter/item/$history_id" );
$link = Linker::link( $title, $text );
return $link;
}
/**
* @return string
*/
function formatDiff() {
$oldVersion = $this->mOldVersion;
$newVersion = $this->mNewVersion;
// headings
$oldLink = $this->formatVersionLink(
$oldVersion['meta']['modified'],
$oldVersion['meta']['history_id']
);
$newLink = $this->formatVersionLink(
$newVersion['meta']['modified'],
$newVersion['meta']['history_id']
);
$oldUserLink = Linker::userLink(
$oldVersion['meta']['modified_by'],
$oldVersion['meta']['modified_by_text']
);
$newUserLink = Linker::userLink(
$newVersion['meta']['modified_by'],
$newVersion['meta']['modified_by_text']
);
$headings = '';
$headings .= Xml::tags( 'th', null,
$this->msg( 'abusefilter-diff-item' )->parse() );
$headings .= Xml::tags( 'th', null,
$this->msg( 'abusefilter-diff-version' )
->rawParams( $oldLink, $oldUserLink )
->params( $newVersion['meta']['modified_by_text'] )
->parse()
);
$headings .= Xml::tags( 'th', null,
$this->msg( 'abusefilter-diff-version' )
->rawParams( $newLink, $newUserLink )
->params( $newVersion['meta']['modified_by_text'] )
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->parse()
);
$headings = Xml::tags( 'tr', null, $headings );
// Basic info
$info = '';
$info .= $this->getHeaderRow( 'abusefilter-diff-info' );
$info .= $this->getDiffRow(
'abusefilter-edit-description',
$oldVersion['info']['description'],
$newVersion['info']['description']
);
global $wgAbuseFilterValidGroups;
if (
count($wgAbuseFilterValidGroups) > 1 ||
$oldVersion['info']['group'] != $newVersion['info']['group']
) {
$info .= $this->getDiffRow(
'abusefilter-edit-group',
AbuseFilter::nameGroup( $oldVersion['info']['group'] ),
AbuseFilter::nameGroup( $newVersion['info']['group'] )
);
}
$info .= $this->getDiffRow(
'abusefilter-edit-flags',
AbuseFilter::formatFlags( $oldVersion['info']['flags'] ),
AbuseFilter::formatFlags( $newVersion['info']['flags'] )
);
$info .= $this->getDiffRow(
'abusefilter-edit-notes',
$oldVersion['info']['notes'],
$newVersion['info']['notes']
);
// Pattern
$info .= $this->getHeaderRow( 'abusefilter-diff-pattern' );
$info .= $this->getDiffRow(
'abusefilter-edit-rules',
$oldVersion['pattern'],
$newVersion['pattern'],
'text'
);
// Actions
$oldActions = $this->stringifyActions( $oldVersion['actions'] );
$newActions = $this->stringifyActions( $newVersion['actions'] );
$info .= $this->getHeaderRow( 'abusefilter-edit-consequences' );
$info .= $this->getDiffRow(
'abusefilter-edit-consequences',
$oldActions,
$newActions
);
$html = "<table class='wikitable'>
<thead>$headings</thead>
<tbody>$info</tbody>
</table>";
$html = Xml::tags( 'h2', null, $this->msg( 'abusefilter-diff-title' )->parse() ) . $html;
return $html;
}
/**
* @param $actions
* @return array
*/
function stringifyActions( $actions ) {
$lines = array();
ksort( $actions );
foreach ( $actions as $action => $parameters ) {
$lines[] = AbuseFilter::formatAction( $action, $parameters );
}
if ( !count( $lines ) ) {
$lines[] = '';
}
return $lines;
}
/**
* @param $msg
* @return String
*/
function getHeaderRow( $msg ) {
$html = $this->msg( $msg )->parse();
$html = Xml::tags( 'th', array( 'colspan' => 3 ), $html );
$html = Xml::tags( 'tr', array( 'class' => 'mw-abusefilter-diff-header' ), $html );
return $html;
}
/**
* @param $msg
* @param $old
* @param $new
* @return string
*/
function getDiffRow( $msg, $old, $new ) {
if ( !is_array( $old ) ) {
$old = explode( "\n", preg_replace( "/\\\r\\\n?/", "\n", $old ) );
}
if ( !is_array( $new ) ) {
$new = explode( "\n", preg_replace( "/\\\r\\\n?/", "\n", $new ) );
}
$diffEngine = new DifferenceEngine;
$diffEngine->showDiffStyle();
// We can't use $diffEngine->generateDiffBody since it doesn't allow custom formatters
$diff = new Diff( $old, $new );
$formatter = new TableDiffFormatterFullContext();
$formattedDiff = $diffEngine->addHeader( $formatter->format( $diff ), '', '' );
return Xml::tags( 'tr', null,
Xml::tags( 'th', null, $this->msg( $msg )->parse() ) .
Xml::tags( 'td', array( 'colspan' => 2 ), $formattedDiff )
) . "\n";
}
}