function do_update_diff($pagestr, $poststr, $original)
{
$obj = new line_diff();
$obj->set_str('left', $original, $pagestr);
$obj->compare();
$diff1 = $obj->toArray();
$obj->set_str('right', $original, $poststr);
$obj->compare();
$diff2 = $obj->toArray();
$arr = $obj->arr_compare('all', $diff1, $diff2);
if (PKWK_DIFF_SHOW_CONFLICT_DETAIL) {
global $do_update_diff_table;
$table = array();
$table[] = <<<EOD
<p>l : between backup data and stored page data.<br />
r : between backup data and your post data.</p>
<table class="style_table">
<tr>
<th>l</th>
<th>r</th>
<th>text</th>
</tr>
EOD;
$tags = array('th', 'th', 'td');
foreach ($arr as $_obj) {
$table[] = ' <tr>';
$params = array($_obj->get('left'), $_obj->get('right'), $_obj->text());
foreach ($params as $key => $text) {
$text = htmlspecialchars(rtrim($text));
if (empty($text)) {
$text = ' ';
}
$table[] = ' <' . $tags[$key] . ' class="style_' . $tags[$key] . '">' . $text . '</' . $tags[$key] . '>';
}
$table[] = ' </tr>';
}
$table[] = '</table>';
$do_update_diff_table = implode("\n", $table) . "\n";
unset($table);
}
$body = array();
foreach ($arr as $_obj) {
if ($_obj->get('left') != '-' && $_obj->get('right') != '-') {
$body[] = $_obj->text();
}
}
return array(rtrim(implode('', $body)) . "\n", 1);
}
