--- /dev/null
+<?php
+/**
+ * Portions taken from phpwiki-1.3.3.
+ *
+ * Copyright © 2000, 2001 Geoffrey T. Dairiki <dairiki@dairiki.org>
+ * You may copy this code freely under the conditions of the GPL.
+ *
+ * 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 DifferenceEngine
+ */
+
+/**
+ * MediaWiki default table style diff formatter
+ * @todo document
+ * @private
+ * @ingroup DifferenceEngine
+ */
+class TableDiffFormatter extends DiffFormatter {
+
+ function __construct() {
+ $this->leadingContextLines = 2;
+ $this->trailingContextLines = 2;
+ }
+
+ /**
+ * @static
+ * @param string $msg
+ *
+ * @return mixed
+ */
+ public static function escapeWhiteSpace( $msg ) {
+ $msg = preg_replace( '/^ /m', '  ', $msg );
+ $msg = preg_replace( '/ $/m', '  ', $msg );
+ $msg = preg_replace( '/ /', '  ', $msg );
+
+ return $msg;
+ }
+
+ /**
+ * @param int $xbeg
+ * @param int $xlen
+ * @param int $ybeg
+ * @param int $ylen
+ *
+ * @return string
+ */
+ protected function blockHeader( $xbeg, $xlen, $ybeg, $ylen ) {
+ // '<!--LINE \d+ -->' get replaced by a localised line number
+ // in DifferenceEngine::localiseLineNumbers
+ $r = '<tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l' .
+ $xbeg .
+ '" ><!--LINE ' .
+ $xbeg .
+ "--></td>\n" .
+ '<td colspan="2" class="diff-lineno"><!--LINE ' .
+ $ybeg .
+ "--></td></tr>\n";
+
+ return $r;
+ }
+
+ /**
+ * Writes the header to the output buffer.
+ *
+ * @param string $header
+ */
+ protected function startBlock( $header ) {
+ $this->writeOutput( $header );
+ }
+
+ protected function endBlock() {
+ }
+
+ /**
+ * @param string[] $lines
+ * @param string $prefix
+ * @param string $color
+ */
+ protected function lines( $lines, $prefix = ' ', $color = 'white' ) {
+ }
+
+ /**
+ * HTML-escape parameter before calling this
+ *
+ * @param string $line
+ *
+ * @return string
+ */
+ protected function addedLine( $line ) {
+ return $this->wrapLine( '+', 'diff-addedline', $line );
+ }
+
+ /**
+ * HTML-escape parameter before calling this
+ *
+ * @param string $line
+ *
+ * @return string
+ */
+ protected function deletedLine( $line ) {
+ return $this->wrapLine( '−', 'diff-deletedline', $line );
+ }
+
+ /**
+ * HTML-escape parameter before calling this
+ *
+ * @param string $line
+ *
+ * @return string
+ */
+ protected function contextLine( $line ) {
+ return $this->wrapLine( ' ', 'diff-context', $line );
+ }
+
+ /**
+ * @param string $marker
+ * @param string $class Unused
+ * @param string $line
+ *
+ * @return string
+ */
+ protected function wrapLine( $marker, $class, $line ) {
+ if ( $line !== '' ) {
+ // The <div> wrapper is needed for 'overflow: auto' style to scroll properly
+ $line = Xml::tags( 'div', null, $this->escapeWhiteSpace( $line ) );
+ }
+
+ return "<td class='diff-marker'>$marker</td><td class='$class'>$line</td>";
+ }
+
+ /**
+ * @return string
+ */
+ protected function emptyLine() {
+ return '<td colspan="2"> </td>';
+ }
+
+ /**
+ * Writes all lines to the output buffer, each enclosed in <tr>.
+ *
+ * @param string[] $lines
+ */
+ protected function added( $lines ) {
+ foreach ( $lines as $line ) {
+ $this->writeOutput( '<tr>' . $this->emptyLine() .
+ $this->addedLine( '<ins class="diffchange">' .
+ htmlspecialchars( $line ) . '</ins>' ) . "</tr>\n" );
+ }
+ }
+
+ /**
+ * Writes all lines to the output buffer, each enclosed in <tr>.
+ *
+ * @param string[] $lines
+ */
+ protected function deleted( $lines ) {
+ foreach ( $lines as $line ) {
+ $this->writeOutput( '<tr>' . $this->deletedLine( '<del class="diffchange">' .
+ htmlspecialchars( $line ) . '</del>' ) .
+ $this->emptyLine() . "</tr>\n" );
+ }
+ }
+
+ /**
+ * Writes all lines to the output buffer, each enclosed in <tr>.
+ *
+ * @param string[] $lines
+ */
+ protected function context( $lines ) {
+ foreach ( $lines as $line ) {
+ $this->writeOutput( '<tr>' .
+ $this->contextLine( htmlspecialchars( $line ) ) .
+ $this->contextLine( htmlspecialchars( $line ) ) . "</tr>\n" );
+ }
+ }
+
+ /**
+ * Writes the two sets of lines to the output buffer, each enclosed in <tr>.
+ *
+ * @param string[] $orig
+ * @param string[] $closing
+ */
+ protected function changed( $orig, $closing ) {
+ $diff = new WordLevelDiff( $orig, $closing );
+ $del = $diff->orig();
+ $add = $diff->closing();
+
+ # Notice that WordLevelDiff returns HTML-escaped output.
+ # Hence, we will be calling addedLine/deletedLine without HTML-escaping.
+
+ $ndel = count( $del );
+ $nadd = count( $add );
+ $n = max( $ndel, $nadd );
+ for ( $i = 0; $i < $n; $i++ ) {
+ $delLine = $i < $ndel ? $this->deletedLine( $del[$i] ) : $this->emptyLine();
+ $addLine = $i < $nadd ? $this->addedLine( $add[$i] ) : $this->emptyLine();
+ $this->writeOutput( "<tr>{$delLine}{$addLine}</tr>\n" );
+ }
+ }
+
+}
scripts.mit.edu / autoinstallsdev / mediawiki.git / blobdiff