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| 1 | <?php |
| 2 | /** |
| 3 | * Portions taken from phpwiki-1.3.3. |
| 4 | * |
| 5 | * Copyright © 2000, 2001 Geoffrey T. Dairiki <dairiki@dairiki.org> |
| 6 | * You may copy this code freely under the conditions of the GPL. |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify |
| 9 | * it under the terms of the GNU General Public License as published by |
| 10 | * the Free Software Foundation; either version 2 of the License, or |
| 11 | * (at your option) any later version. |
| 12 | * |
| 13 | * This program is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | * GNU General Public License for more details. |
| 17 | * |
| 18 | * You should have received a copy of the GNU General Public License along |
| 19 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 20 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
| 21 | * http://www.gnu.org/copyleft/gpl.html |
| 22 | * |
| 23 | * @file |
| 24 | * @ingroup DifferenceEngine |
| 25 | */ |
| 26 | |
| 27 | namespace Wikimedia\Diff; |
| 28 | |
| 29 | /** |
| 30 | * A formatter that outputs unified diffs |
| 31 | * @newable |
| 32 | * @ingroup DifferenceEngine |
| 33 | */ |
| 34 | class UnifiedDiffFormatter extends DiffFormatter { |
| 35 | |
| 36 | /** @var int */ |
| 37 | protected $leadingContextLines = 2; |
| 38 | |
| 39 | /** @var int */ |
| 40 | protected $trailingContextLines = 2; |
| 41 | |
| 42 | /** |
| 43 | * @param string[] $lines |
| 44 | * @param string $prefix |
| 45 | */ |
| 46 | protected function lines( $lines, $prefix = ' ' ) { |
| 47 | foreach ( $lines as $line ) { |
| 48 | $this->writeOutput( "{$prefix}{$line}\n" ); |
| 49 | } |
| 50 | } |
| 51 | |
| 52 | /** |
| 53 | * @param string[] $lines |
| 54 | */ |
| 55 | protected function added( $lines ) { |
| 56 | $this->lines( $lines, '+' ); |
| 57 | } |
| 58 | |
| 59 | /** |
| 60 | * @param string[] $lines |
| 61 | */ |
| 62 | protected function deleted( $lines ) { |
| 63 | $this->lines( $lines, '-' ); |
| 64 | } |
| 65 | |
| 66 | /** |
| 67 | * @param string[] $orig |
| 68 | * @param string[] $closing |
| 69 | */ |
| 70 | protected function changed( $orig, $closing ) { |
| 71 | $this->deleted( $orig ); |
| 72 | $this->added( $closing ); |
| 73 | } |
| 74 | |
| 75 | /** |
| 76 | * @param int $xbeg |
| 77 | * @param int $xlen |
| 78 | * @param int $ybeg |
| 79 | * @param int $ylen |
| 80 | * |
| 81 | * @return string |
| 82 | */ |
| 83 | protected function blockHeader( $xbeg, $xlen, $ybeg, $ylen ) { |
| 84 | return "@@ -$xbeg,$xlen +$ybeg,$ylen @@"; |
| 85 | } |
| 86 | |
| 87 | } |
| 88 | |
| 89 | /** @deprecated class alias since 1.41 */ |
| 90 | class_alias( UnifiedDiffFormatter::class, 'UnifiedDiffFormatter' ); |