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Edit File: inline.php

<?php
/**
 * "Inline" diff renderer.
 *
 * $Horde: framework/Text_Diff/Diff/Renderer/inline.php,v 1.21 2008/01/04 10:07:51 jan Exp $
 *
 * Copyright 2004-2008 The Horde Project (http://www.horde.org/)
 *
 * See the enclosed file COPYING for license information (LGPL). If you did
 * not receive this file, see http://opensource.org/licenses/lgpl-license.php.
 *
 * @author  Ciprian Popovici
 * @package Text_Diff
 */

/** Text_Diff_Renderer */
require_once 'Text/Diff/Renderer.php';

/**
 * "Inline" diff renderer.
 *
 * This class renders diffs in the Wiki-style "inline" format.
 *
 * @author  Ciprian Popovici
 * @package Text_Diff
 */
class Text_Diff_Renderer_inline extends Text_Diff_Renderer {

/**
     * Number of leading context "lines" to preserve.
     */
    var $_leading_context_lines = 10000;

/**
     * Number of trailing context "lines" to preserve.
     */
    var $_trailing_context_lines = 10000;

/**
     * Prefix for inserted text.
     */
    var $_ins_prefix = '<ins>';

/**
     * Suffix for inserted text.
     */
    var $_ins_suffix = '</ins>';

/**
     * Prefix for deleted text.
     */
    var $_del_prefix = '<del>';

/**
     * Suffix for deleted text.
     */
    var $_del_suffix = '</del>';

/**
     * Header for each change block.
     */
    var $_block_header = '';

/**
     * What are we currently splitting on? Used to recurse to show word-level
     * changes.
     */
    var $_split_level = 'lines';

function _blockHeader($xbeg, $xlen, $ybeg, $ylen)
    {
        return $this->_block_header;
    }

function _startBlock($header)
    {
        return $header;
    }

function _lines($lines, $prefix = ' ', $encode = true)
    {
        if ($encode) {
            array_walk($lines, array(&$this, '_encode'));
        }

/*if ($this->_split_level == 'words') { // commented out by zeke
            return implode('', $lines);
        } else {*/
            return implode("\n", $lines) . "\n";
        //}
    }

function _added($lines)
    {
        array_walk($lines, array(&$this, '_encode'));
        $lines[0] = $this->_ins_prefix . $lines[0];
        $lines[count($lines) - 1] .= $this->_ins_suffix;
        return $this->_lines($lines, ' ', false);
    }

function _deleted($lines, $words = false)
    {
        array_walk($lines, array(&$this, '_encode'));
        $lines[0] = $this->_del_prefix . $lines[0];
        $lines[count($lines) - 1] .= $this->_del_suffix;
        return $this->_lines($lines, ' ', false);
    }

function _changed($orig, $final)
    {
        /* If we've already split on words, don't try to do so again - just
         * display. */
        if ($this->_split_level == 'words') {
            $prefix = '';
            while ($orig[0] !== false && $final[0] !== false &&
                   substr($orig[0], 0, 1) == ' ' &&
                   substr($final[0], 0, 1) == ' ') {
                $prefix .= substr($orig[0], 0, 1);
                $orig[0] = substr($orig[0], 1);
                $final[0] = substr($final[0], 1);
            }
            return $prefix . $this->_deleted($orig) . $this->_added($final);
        }

$text1 = implode("\n", $orig);
        $text2 = implode("\n", $final);

/* Non-printing newline marker. */
        $nl = "\0";

/* We want to split on word boundaries, but we need to
         * preserve whitespace as well. Therefore we split on words,
         * but include all blocks of whitespace in the wordlist. */
        $diff = new Text_Diff($this->_splitOnWords($text1, $nl),
                              $this->_splitOnWords($text2, $nl));

/* Get the diff in inline format. */
        $renderer = new Text_Diff_Renderer_inline(array_merge($this->getParams(),
                                                              array('split_level' => 'words')));

/* Run the diff and get the output. */
        return str_replace($nl, "\n", $renderer->render($diff)) . "\n";
    }

function _splitOnWords($string, $newlineEscape = "\n")
    {
        // Ignore \0; otherwise the while loop will never finish.
        $string = str_replace("\0", '', $string);

$words = array();
        $length = strlen($string);
        $pos = 0;

while ($pos < $length) {
            // Eat a word with any preceding whitespace.
            $spaces = strspn(substr($string, $pos), " \n");
            $nextpos = strcspn(substr($string, $pos + $spaces), " \n");
            $words[] = str_replace("\n", $newlineEscape, substr($string, $pos, $spaces + $nextpos));
            $pos += $spaces + $nextpos;
        }

return $words;
    }

function _encode(&$string)
    {
        $string = htmlspecialchars($string);
    }

function sideBySide($string)
    {
		$string1 = $string2 = '';

if ($count = preg_match_all("/(?:<del>([\s\S]+)<\/del><ins>([\s\S]+)<\/ins>)|(?:<ins>([\s\S]+)<\/ins>)|(?:<del>([\s\S]+)<\/del>)/iU", $string, $array)) {
			$data = preg_split("/(?:<del>[\s\S]+<\/del><ins>[\s\S]+<\/ins>)|(?:<ins>[\s\S]+<\/ins>)|(?:<del>[\s\S]+<\/del>)/iU", $string);

for ($j = 0; $j < $count; $j++) {
				$string1 .= $data[$j] . ($array[1][$j] || $array[4][$j] ? '<del>' . ($array[1][$j] ? $array[1][$j] : $array[4][$j]) . '</del>' : '');
			}

$string1 .= $data[$j];

for ($j = 0; $j < $count; $j++) {
				$string2 .= $data[$j] . ($array[2][$j] || $array[3][$j] ? '<ins>' . ($array[2][$j] ? $array[2][$j] : $array[3][$j]) . '</ins>' : '');
			}

$string2 .= $data[$j];
		} else {
			$string1 = $string2 = $string;
		}

return array ($string1, $string2);
	}

function inline($string)
	{

}
}

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