mirror of
https://gerrit.wikimedia.org/r/mediawiki/extensions/Echo
synced 2024-11-23 15:36:58 +00:00
119 lines
3.1 KiB
PHP
119 lines
3.1 KiB
PHP
<?php
|
|
|
|
namespace MediaWiki\Extension\Notifications;
|
|
|
|
/**
|
|
* MediaWiki Extension: Echo
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
* of this software and associated documentation files (the "Software"), to deal
|
|
* in the Software without restriction, including without limitation the rights
|
|
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
* copies of the Software, and to permit persons to whom the Software is
|
|
* furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included in
|
|
* all copies or substantial portions of the Software.
|
|
*
|
|
* This program is distributed WITHOUT ANY WARRANTY.
|
|
*/
|
|
|
|
/**
|
|
* @file
|
|
* @ingroup Extensions
|
|
* @author Erik Bernhardson
|
|
*/
|
|
|
|
/**
|
|
* Represents a single set of changes all effecting neighboring lines
|
|
*/
|
|
class DiffGroup {
|
|
/**
|
|
* @var int[] The left and right position this change starts at
|
|
*/
|
|
protected $position;
|
|
|
|
/**
|
|
* @var string[] The lines that have been added
|
|
*/
|
|
protected $new = [];
|
|
|
|
/**
|
|
* @var string[] The lines that have been removed
|
|
*/
|
|
protected $old = [];
|
|
|
|
/**
|
|
* @param int $leftPos The starting line number in the left text
|
|
* @param int $rightPos The starting line number in the right text
|
|
*/
|
|
public function __construct( $leftPos, $rightPos ) {
|
|
// +1 due to the original code use 1 indexing for this result
|
|
$this->position = [
|
|
'right-pos' => $rightPos + 1,
|
|
'left-pos' => $leftPos + 1,
|
|
];
|
|
}
|
|
|
|
/**
|
|
* @param string $line Line in the right text but not in the left
|
|
*/
|
|
public function add( $line ) {
|
|
$this->new[] = $line;
|
|
}
|
|
|
|
/**
|
|
* @param string $line Line in the left text but not in the right
|
|
*/
|
|
public function subtract( $line ) {
|
|
$this->old[] = $line;
|
|
}
|
|
|
|
/**
|
|
* @return array[] set of changes
|
|
* Each change consists of:
|
|
* An 'action', one of:
|
|
* - add
|
|
* - subtract
|
|
* - change
|
|
* 'content' that was added or removed, or in the case
|
|
* of a change, 'old_content' and 'new_content'
|
|
* 'left_pos' and 'right_pos' (in 1-indexed lines) of the change.
|
|
*/
|
|
public function getChangeSet() {
|
|
$old = implode( "\n", $this->old );
|
|
$new = implode( "\n", $this->new );
|
|
$position = $this->position;
|
|
$changeSet = [];
|
|
|
|
// The implodes must come first because we consider [ '' ] to also be false
|
|
// meaning a blank link replaced with content is an addition
|
|
if ( $old && $new ) {
|
|
$min = min( count( $this->old ), count( $this->new ) );
|
|
$changeSet[] = $position + [
|
|
'action' => 'change',
|
|
'old_content' => implode( "\n", array_slice( $this->old, 0, $min ) ),
|
|
'new_content' => implode( "\n", array_slice( $this->new, 0, $min ) ),
|
|
];
|
|
$position['left-pos'] += $min;
|
|
$position['right-pos'] += $min;
|
|
$old = implode( "\n", array_slice( $this->old, $min ) );
|
|
$new = implode( "\n", array_slice( $this->new, $min ) );
|
|
}
|
|
|
|
if ( $new ) {
|
|
$changeSet[] = $position + [
|
|
'action' => 'add',
|
|
'content' => $new,
|
|
];
|
|
} elseif ( $old ) {
|
|
$changeSet[] = $position + [
|
|
'action' => 'subtract',
|
|
'content' => $old,
|
|
];
|
|
}
|
|
|
|
return $changeSet;
|
|
}
|
|
}
|