1 <?php

     2 

     3 /**

     4  * "Unified" diff renderer.

     5  *

     6  * This class renders the diff in classic "unified diff" format.

     7  *

     8  * $Horde: framework/Text_Diff/Diff/Renderer/unified.php,v 1.5 2006/01/08 00:06:57 jan Exp $

     9  *

    10  * @package Text_Diff

    11  */

    12 class Text_Diff_Renderer_unified extends Text_Diff_Renderer {

    13 

    14     /**

    15      * Number of leading context "lines" to preserve.

    16      */

    17     var $_leading_context_lines = 4;

    18 

    19     /**

    20      * Number of trailing context "lines" to preserve.

    21      */

    22     var $_trailing_context_lines = 4;

    23 

    24     function _blockHeader($xbeg, $xlen, $ybeg, $ylen)

    25     {

    26         if ($xlen != 1) {

    27             $xbeg .= ',' . $xlen;

    28         }

    29         if ($ylen != 1) {

    30             $ybeg .= ',' . $ylen;

    31         }

    32         return "@@ -$xbeg +$ybeg @@";

    33     }

    34 

    35     function _added($lines)

    36     {

    37         return $this->_lines($lines, '+');

    38     }

    39 

    40     function _deleted($lines)

    41     {

    42         return $this->_lines($lines, '-');

    43     }

    44 

    45     function _changed($orig, $final)

    46     {

    47         return $this->_deleted($orig) . $this->_added($final);

    48     }

    49 

    50 }