3 * Copyright © 2000, 2001 Geoffrey T. Dairiki <dairiki@dairiki.org>
4 * You may copy this code freely under the conditions of the GPL.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License along
17 * with this program; if not, write to the Free Software Foundation, Inc.,
18 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
19 * http://www.gnu.org/copyleft/gpl.html
22 * @ingroup DifferenceEngine
23 * @defgroup DifferenceEngine DifferenceEngine
26 namespace MediaWiki\Diff
;
29 * Stores, escapes and formats the results of word-level diff
32 * @ingroup DifferenceEngine
34 class WordAccumulator
{
35 public $insClass = ' class="diffchange diffchange-inline"';
36 public $delClass = ' class="diffchange diffchange-inline"';
44 * @param string $new_tag
46 private function flushGroup( $new_tag ) {
47 if ( $this->group
!== '' ) {
48 if ( $this->tag
== 'ins' ) {
49 $this->line
.= "<ins{$this->insClass}>" . htmlspecialchars( $this->group
) . '</ins>';
50 } elseif ( $this->tag
== 'del' ) {
51 $this->line
.= "<del{$this->delClass}>" . htmlspecialchars( $this->group
) . '</del>';
53 $this->line
.= htmlspecialchars( $this->group
);
57 $this->tag
= $new_tag;
61 * @param string $new_tag
63 private function flushLine( $new_tag ) {
64 $this->flushGroup( $new_tag );
65 if ( $this->line
!= '' ) {
66 array_push( $this->lines
, $this->line
);
68 # make empty lines visible by inserting an NBSP
69 array_push( $this->lines
, ' ' );
75 * @param string[] $words
78 public function addWords( $words, $tag = '' ) {
79 if ( $tag != $this->tag
) {
80 $this->flushGroup( $tag );
83 foreach ( $words as $word ) {
84 // new-line should only come as first char of word.
88 if ( $word[0] == "\n" ) {
89 $this->flushLine( $tag );
90 $word = substr( $word, 1 );
92 assert( !strstr( $word, "\n" ) );
93 $this->group
.= $word;
100 public function getLines() {
101 $this->flushLine( '~done' );