/**
* Creates the array which contains two compared page versions
*
* @author Johannes Klose <*****@*****.**>
* @param string $origText Original page text
* @param string $finalText Final page text
* @param array $versions All page versions
* @return array Page differences
**/
function makeDiff($origText, $finalText, &$versions)
{
$diff = diff::getDiff($finalText, $origText);
$origLines = explode("\n", $origText);
$finalLines = explode("\n", $finalText);
$lineCount = count($origLines) > count($finalLines) ? count($origLines) : count($finalLines);
$origTextT = array();
$finalTextT = array();
$ol = 0;
$fl = 0;
for ($i = 0; $i <= $lineCount; $i++) {
if (isset($diff[$i])) {
$opType = $diff[$i][0];
$opVal = isset($diff[$i][1]) ? $diff[$i][1] : '';
if ($opType == '~') {
$origTextT[] = htmlentities($origLines[$ol]);
$finalTextT[] = array('type' => 'edit', 'line' => htmlentities($opVal));
$ol++;
$fl++;
} elseif ($opType == '+') {
$origTextT[] = '';
$finalTextT[] = array('type' => 'add', 'line' => htmlentities($opVal));
$fl++;
} else {
$origTextT[] = htmlentities($origLines[$ol]);
$finalTextT[] = array('type' => 'subs', 'line' => htmlentities($origLines[$ol]));
$ol++;
}
} else {
if (isset($origLines[$ol])) {
$origTextT[] = htmlentities($origLines[$ol]);
$ol++;
}
if (isset($finalLines[$fl])) {
$finalTextT[] = array('type' => 'none', 'line' => htmlentities($finalLines[$fl]));
$fl++;
}
}
}
return array('orig' => $origTextT, 'final' => $finalTextT);
}
/**
* Creates a changelog and version information
* for a edited page.
*
* @author Johannes Klose <*****@*****.**>
* @param int $pageId The page id
* @param string $oldText Old page text
* @param string $newText New page text
* @param string $version Old page version
* @param int $userId The authors id (if logged in)
* @param string $userName The authors name (if it is an unregistered author)
* @param string $summary Summary of changes
* @return string New page version
**/
function logChanges($pageId, $oldText, $newText, $version, $userId, $userName, $summary)
{
$db =& singleton('database');
$pageVersion = $version;
$linesOld = explode("\n", $newText);
$diff = diff::getDiff($oldText, $newText);
if (count($diff) > 0) {
$oldLineCount = count($linesOld);
$changedLineCount = count($diff);
$percentSteps = $oldLineCount / 100;
$percentChanged = $changedLineCount / $percentSteps;
if ($version != '') {
$pageVersion = explode('.', $version);
} else {
$pageVersion = array(0, 0, 0);
}
if ($percentChanged <= 5 || count($diff) <= 5) {
$pageVersion[2]++;
} elseif ($percentChanged <= 25) {
$pageVersion[1]++;
$pageVersion[2] = 0;
} else {
$pageVersion[0]++;
$pageVersion[1] = 0;
$pageVersion[2] = 0;
}
$pageVersion = join('.', $pageVersion);
$db->query('INSERT INTO ' . DB_PREFIX . 'changelog(log_page_id, ' . 'log_page_version, log_time, log_diff, log_user_id, log_user_name, ' . 'log_summary, log_ip) ' . 'VALUES(' . $pageId . ', \'' . $pageVersion . '\', ' . $this->time . ', ' . '\'' . addslashes(serialize($diff)) . '\', ' . $userId . ', ' . '\'' . addslashes($userName) . '\', \'' . addslashes($summary) . '\', ' . '\'' . addslashes($this->server['REMOTE_ADDR']) . '\')');
}
return $pageVersion;
}
