<?php
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// (c) Copyright by authors of the Tiki Wiki CMS Groupware Project
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//
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// All Rights Reserved. See copyright.txt for details and a complete list of authors.
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// Licensed under the GNU LESSER GENERAL PUBLIC LICENSE. See license.txt for details.
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// $Id$
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/**
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* "Side-by-Side" diff renderer.
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*
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* This class renders the diff in "side-by-side" format, like Wikipedia.
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*
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* @package Text_Diff
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*/
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class Text_Diff_Renderer_character extends Tiki_Text_Diff_Renderer
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{
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protected $orig;
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protected $final;
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public function __construct($context_lines = 0)
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{
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$this->_leading_context_lines = $context_lines;
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$this->_trailing_context_lines = $context_lines;
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$this->orig = "";
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$this->final = "";
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}
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protected function _startDiff()
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{
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}
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protected function _endDiff()
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{
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return [$this->orig, $this->final];
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}
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protected function _blockHeader($xbeg, $xlen, $ybeg, $ylen)
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{
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}
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protected function _startBlock($header)
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{
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echo $header;
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}
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protected function _endBlock()
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{
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}
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protected function _lines($lines, $prefix = '', $suffix = '', $type = '')
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{
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if ($type == 'context') {
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foreach ($lines as $line) {
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$this->orig .= htmlspecialchars($line);
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$this->final .= htmlspecialchars($line);
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}
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} elseif ($type == 'added' || $type == 'change-added') {
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$l = "";
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foreach ($lines as $line) {
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$l .= htmlspecialchars($line);
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}
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if (! empty($l)) {
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$this->final .= '<ins class="diffchar inserted"><strong>' . $l . "</strong></ins>";
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}
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} elseif ($type == 'deleted' || $type == 'change-deleted') {
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$l = "";
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foreach ($lines as $line) {
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$l .= htmlspecialchars($line);
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}
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if (! empty($l)) {
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$this->orig .= '<del class="diffchar deleted"><strong>' . $l . "</strong></del>";
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}
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}
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}
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protected function _context($lines)
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{
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$this->_lines($lines, '', '', 'context');
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}
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protected function _added($lines, $changemode = false)
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{
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if ($changemode) {
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$this->_lines($lines, '+', '', 'change-added');
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} else {
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$this->_lines($lines, '+', '', 'added');
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}
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}
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protected function _deleted($lines, $changemode = false)
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{
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if ($changemode) {
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$this->_lines($lines, '-', '', 'change-deleted');
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} else {
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$this->_lines($lines, '-', '', 'deleted');
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}
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}
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protected function _changed($orig, $final)
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{
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$this->_deleted($orig, true);
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$this->_added($final, true);
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}
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}
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