3 * Portions taken from phpwiki-1.3.3.
5 * Copyright © 2000, 2001 Geoffrey T. Dairiki <dairiki@dairiki.org>
6 * You may copy this code freely under the conditions of the GPL.
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License along
19 * with this program; if not, write to the Free Software Foundation, Inc.,
20 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
21 * http://www.gnu.org/copyleft/gpl.html
24 * @ingroup DifferenceEngine
28 * MediaWiki default table style diff formatter
31 * @ingroup DifferenceEngine
33 class TableDiffFormatter
extends DiffFormatter
{
34 function __construct() {
35 $this->leadingContextLines
= 2;
36 $this->trailingContextLines
= 2;
44 public static function escapeWhiteSpace( $msg ) {
45 $msg = preg_replace( '/^ /m', '  ', $msg );
46 $msg = preg_replace( '/ $/m', '  ', $msg );
47 $msg = preg_replace( '/ /', '  ', $msg );
59 protected function blockHeader( $xbeg, $xlen, $ybeg, $ylen ) {
60 $r = '<tr><td colspan="2" class="diff-lineno"><!--LINE ' . $xbeg . "--></td>\n" .
61 '<td colspan="2" class="diff-lineno"><!--LINE ' . $ybeg . "--></td></tr>\n";
69 protected function startBlock( $header ) {
73 protected function endBlock() {
76 protected function lines( $lines, $prefix = ' ', $color = 'white' ) {
80 * HTML-escape parameter before calling this
84 protected function addedLine( $line ) {
85 return $this->wrapLine( '+', 'diff-addedline', $line );
89 * HTML-escape parameter before calling this
93 protected function deletedLine( $line ) {
94 return $this->wrapLine( '−', 'diff-deletedline', $line );
98 * HTML-escape parameter before calling this
102 protected function contextLine( $line ) {
103 return $this->wrapLine( ' ', 'diff-context', $line );
112 protected function wrapLine( $marker, $class, $line ) {
113 if ( $line !== '' ) {
114 // The <div> wrapper is needed for 'overflow: auto' style to scroll properly
115 $line = Xml
::tags( 'div', null, $this->escapeWhiteSpace( $line ) );
118 return "<td class='diff-marker'>$marker</td><td class='$class'>$line</td>";
124 protected function emptyLine() {
125 return '<td colspan="2"> </td>';
129 * @param $lines array
131 protected function added( $lines ) {
132 foreach ( $lines as $line ) {
133 echo '<tr>' . $this->emptyLine() .
134 $this->addedLine( '<ins class="diffchange">' .
135 htmlspecialchars( $line ) . '</ins>' ) . "</tr>\n";
142 protected function deleted( $lines ) {
143 foreach ( $lines as $line ) {
144 echo '<tr>' . $this->deletedLine( '<del class="diffchange">' .
145 htmlspecialchars( $line ) . '</del>' ) .
146 $this->emptyLine() . "</tr>\n";
153 protected function context( $lines ) {
154 foreach ( $lines as $line ) {
156 $this->contextLine( htmlspecialchars( $line ) ) .
157 $this->contextLine( htmlspecialchars( $line ) ) . "</tr>\n";
165 protected function changed( $orig, $closing ) {
166 wfProfileIn( __METHOD__
);
168 $diff = new WordLevelDiff( $orig, $closing );
169 $del = $diff->orig();
170 $add = $diff->closing();
172 # Notice that WordLevelDiff returns HTML-escaped output.
173 # Hence, we will be calling addedLine/deletedLine without HTML-escaping.
175 while ( $line = array_shift( $del ) ) {
176 $aline = array_shift( $add );
177 echo '<tr>' . $this->deletedLine( $line ) .
178 $this->addedLine( $aline ) . "</tr>\n";
180 foreach ( $add as $line ) { # If any leftovers
181 echo '<tr>' . $this->emptyLine() .
182 $this->addedLine( $line ) . "</tr>\n";
184 wfProfileOut( __METHOD__
);