| 1 | 5 | simandl | <?php |
| 2 | | | /** |
| 3 | | | * $Horde: framework/Text_Diff/Diff/Mapped.php,v 1.3.2.3 2008/01/04 10:37:27 jan Exp $ |
| 4 | | | * |
| 5 | | | * Copyright 2007-2008 The Horde Project (http://www.horde.org/) |
| 6 | | | * |
| 7 | | | * See the enclosed file COPYING for license information (LGPL). If you did |
| 8 | | | * not receive this file, see http://opensource.org/licenses/lgpl-license.php. |
| 9 | | | * |
| 10 | | | * @package Text_Diff |
| 11 | | | * @author Geoffrey T. Dairiki <dairiki@dairiki.org> |
| 12 | | | */ |
| 13 | | | class Text_Diff_Mapped extends Text_Diff { |
| 14 | | | |
| 15 | | | /** |
| 16 | | | * Computes a diff between sequences of strings. |
| 17 | | | * |
| 18 | | | * This can be used to compute things like case-insensitve diffs, or diffs |
| 19 | | | * which ignore changes in white-space. |
| 20 | | | * |
| 21 | | | * @param array $from_lines An array of strings. |
| 22 | | | * @param array $to_lines An array of strings. |
| 23 | | | * @param array $mapped_from_lines This array should have the same size |
| 24 | | | * number of elements as $from_lines. The |
| 25 | | | * elements in $mapped_from_lines and |
| 26 | | | * $mapped_to_lines are what is actually |
| 27 | | | * compared when computing the diff. |
| 28 | | | * @param array $mapped_to_lines This array should have the same number |
| 29 | | | * of elements as $to_lines. |
| 30 | | | */ |
| 31 | | | function Text_Diff_Mapped($from_lines, $to_lines, |
| 32 | | | $mapped_from_lines, $mapped_to_lines) |
| 33 | | | { |
| 34 | | | assert(count($from_lines) == count($mapped_from_lines)); |
| 35 | | | assert(count($to_lines) == count($mapped_to_lines)); |
| 36 | | | |
| 37 | | | parent::Text_Diff($mapped_from_lines, $mapped_to_lines); |
| 38 | | | |
| 39 | | | $xi = $yi = 0; |
| 40 | | | for ($i = 0; $i < count($this->_edits); $i++) { |
| 41 | | | $orig = &$this->_edits[$i]->orig; |
| 42 | | | if (is_array($orig)) { |
| 43 | | | $orig = array_slice($from_lines, $xi, count($orig)); |
| 44 | | | $xi += count($orig); |
| 45 | | | } |
| 46 | | | |
| 47 | | | $final = &$this->_edits[$i]->final; |
| 48 | | | if (is_array($final)) { |
| 49 | | | $final = array_slice($to_lines, $yi, count($final)); |
| 50 | | | $yi += count($final); |
| 51 | | | } |
| 52 | | | } |
| 53 | | | } |
| 54 | | | |
| 55 | | | } |
