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<?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
*/
/**
* A formatter that outputs unified diffs
* @ingroup DifferenceEngine
*/
class UnifiedDiffFormatter extends DiffFormatter {
/** @var int */
protected $leadingContextLines = 2;
/** @var int */
protected $trailingContextLines = 2;
/**
* @param string[] $lines
* @param string $prefix
*/
protected function lines( $lines, $prefix = ' ' ) {
foreach ( $lines as $line ) {
echo "{$prefix}{$line}\n";
}
}
/**
* @param string[] $lines
*/
protected function added( $lines ) {
$this->lines( $lines, '+' );
}
/**
* @param string[] $lines
*/
protected function deleted( $lines ) {
$this->lines( $lines, '-' );
}
/**
* @param string[] $orig
* @param string[] $closing
*/
protected function changed( $orig, $closing ) {
$this->deleted( $orig );
$this->added( $closing );
}
/**
* @param int $xbeg
* @param int $xlen
* @param int $ybeg
* @param int $ylen
*
* @return string
*/
protected function blockHeader( $xbeg, $xlen, $ybeg, $ylen ) {
return "@@ -$xbeg,$xlen +$ybeg,$ylen @@";
}
}
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