100 lines
2.2 KiB
PHP
100 lines
2.2 KiB
PHP
<?php
|
|
/**
|
|
* A PHP diff engine for phpwiki. (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
|
|
* @defgroup DifferenceEngine DifferenceEngine
|
|
*/
|
|
|
|
/**
|
|
* The base class for all other DiffOp classes.
|
|
*
|
|
* The classes that extend DiffOp are: DiffOpCopy, DiffOpDelete, DiffOpAdd and
|
|
* DiffOpChange. FakeDiffOp also extends DiffOp, but it is not located in this file.
|
|
*
|
|
* @internal
|
|
* @ingroup DifferenceEngine
|
|
*/
|
|
abstract class DiffOp {
|
|
|
|
/**
|
|
* @var string
|
|
*/
|
|
public $type;
|
|
|
|
/**
|
|
* @var string[]|false
|
|
*/
|
|
public $orig;
|
|
|
|
/**
|
|
* @var string[]|false
|
|
*/
|
|
public $closing;
|
|
|
|
/**
|
|
* @return string
|
|
*/
|
|
public function getType() {
|
|
return $this->type;
|
|
}
|
|
|
|
/**
|
|
* @return string[]
|
|
*/
|
|
public function getOrig() {
|
|
return $this->orig;
|
|
}
|
|
|
|
/**
|
|
* @param int|null $i
|
|
* @return string[]|string|null
|
|
*/
|
|
public function getClosing( $i = null ) {
|
|
if ( $i === null ) {
|
|
return $this->closing;
|
|
}
|
|
if ( array_key_exists( $i, $this->closing ) ) {
|
|
return $this->closing[$i];
|
|
}
|
|
return null;
|
|
}
|
|
|
|
/**
|
|
* @return self
|
|
*/
|
|
abstract public function reverse();
|
|
|
|
/**
|
|
* @return int
|
|
*/
|
|
public function norig() {
|
|
return $this->orig ? count( $this->orig ) : 0;
|
|
}
|
|
|
|
/**
|
|
* @return int
|
|
*/
|
|
public function nclosing() {
|
|
return $this->closing ? count( $this->closing ) : 0;
|
|
}
|
|
}
|