includes/diff/ArrayDiffFormatter.php

   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 /**
  28  * A pseudo-formatter that just passes along the Diff::$edits array
  29  * @ingroup DifferenceEngine
  30  */
  31 class ArrayDiffFormatter extends DiffFormatter {
  32
  33         /**
  34          * @param Diff $diff A Diff object.
  35          *
  36          * @return array[] List of associative arrays, each describing a difference.
  37          */
  38         public function format( $diff ) {
  39                 $oldline = 1;
  40                 $newline = 1;
  41                 $retval = [];
  42                 foreach ( $diff->getEdits() as $edit ) {
  43                         switch ( $edit->getType() ) {
  44                                 case 'add':
  45                                         foreach ( $edit->getClosing() as $line ) {
  46                                                 $retval[] = [
  47                                                         'action' => 'add',
  48                                                         'new' => $line,
  49                                                         'newline' => $newline++
  50                                                 ];
  51                                         }
  52                                         break;
  53                                 case 'delete':
  54                                         foreach ( $edit->getOrig() as $line ) {
  55                                                 $retval[] = [
  56                                                         'action' => 'delete',
  57                                                         'old' => $line,
  58                                                         'oldline' => $oldline++,
  59                                                 ];
  60                                         }
  61                                         break;
  62                                 case 'change':
  63                                         foreach ( $edit->getOrig() as $key => $line ) {
  64                                                 $retval[] = [
  65                                                         'action' => 'change',
  66                                                         'old' => $line,
  67                                                         'new' => $edit->getClosing( $key ),
  68                                                         'oldline' => $oldline++,
  69                                                         'newline' => $newline++,
  70                                                 ];
  71                                         }
  72                                         break;
  73                                 case 'copy':
  74                                         $oldline += count( $edit->getOrig() );
  75                                         $newline += count( $edit->getOrig() );
  76                         }
  77                 }
  78
  79                 return $retval;
  80         }
  81
  82 }