/**
* Undo patched changes to a string.
* $text: Final string
* $diff: Changes that were applied
* return: Unpatched string
*/
function phorum_unpatch($text, $diff)
{
$text = str_replace(array("\r\n", "\r"), "\n", $text);
if (!is_array($diff)) {
$n = 0;
for ($i = 0; $i < strlen($diff); $i++) {
$c = substr($diff, $i, 1);
if ($c == "-") {
$n = substr($diff, 0, $i);
$pre = substr($text, 0, $n);
$post = substr($text, $n);
return $pre . substr($diff, $i + 1) . $post;
} elseif ($c == "+") {
$n = substr($diff, 0, $i);
$pre = substr($text, 0, $n);
$post = substr($text, $n);
return $pre . substr($post, strlen($diff) - $i - 1);
}
}
return $text;
}
foreach (array_reverse($diff) as $d) {
$text = phorum_unpatch($text, $d);
}
return $text;
}
$message_hist[count($message_hist)-1]["colored_subject"] = $colored_subject;
$prev_subject = phorum_unpatch($prev_subject, $prev_diff_subject);
$this_version["colored_subject"] = $prev_subject;
} else {
$prev_subject = $message["subject"];
$this_version["colored_subject"] = $message["subject"];
}*/
// only happens in first loop
if ($prev_subject == -1) {
$prev_subject = $message["subject"];
}
// subject diffs
if (isset($diff_info['diff_subject']) && !empty($diff_info['diff_subject'])) {
$colored_subject = phorum_unpatch_color($prev_subject, $diff_info['diff_subject']);
$prev_subject = phorum_unpatch($prev_subject, $diff_info['diff_subject']);
$colored_subject = htmlspecialchars($colored_subject, ENT_COMPAT, $PHORUM["DATA"]["HCHARSET"]);
$colored_subject = str_replace(array("[phorum addition]", "[phorum removal]", "[/phorum addition]", "[/phorum removal]"), array("<span class=\"addition\">", "<span class=\"removal\">", "</span>", "</span>"), $colored_subject);
$colored_subject = nl2br($colored_subject);
$this_version["colored_subject"] = $colored_subject;
} elseif (!isset($diff_info['diff_subject'])) {
$this_version['colored_subject'] = nl2br($prev_subject);
} else {
$this_version["colored_subject"] = nl2br($prev_subject);
}
// no nl2br for subject
//$this_version["colored_subject"] = nl2br($this_version["colored_subject"]);
$message_hist[] = $this_version;
}
$PHORUM["DATA"]["HEADING"] = $PHORUM["DATA"]["LANG"]["ChangeHistory"];
// unset default description