public function saveTextRevision($moduleId, $moduleContentTypeId, $moduleContentId, $oldText, $newText, $textfieldIndex = 0, $revision = 0)
{
global $dbi, $login, $settings;
if (!$settings->enableRevisioning) {
return;
}
// Get latest revision number and increment
$maxRevision = 0;
if (empty($revision)) {
$result = $dbi->query("SELECT MAX(revision) FROM " . revisionTableName . " WHERE moduleId=" . $dbi->quote($moduleId) . " AND moduleContentTypeId=" . $dbi->quote($moduleContentTypeId) . " AND moduleContentId=" . $dbi->quote($moduleContentId));
if ($result->rows()) {
list($maxRevision) = $result->fetchrow_array();
$maxRevision++;
}
} else {
$maxRevision = $revision;
}
// Parse text strings
$newText = parseString($newText);
$oldText = parseString($oldText);
// Calculate diff
$diff = new Diff();
$result = $diff->stringDiff($newText, $oldText, " ");
$changes = $diff->sequentialChanges($result);
if (sizeof($changes) > 0) {
$serializedChanges = serialize($changes);
// Insert diff
$dbi->query("INSERT INTO " . revisionTableName . "(moduleId,moduleContentTypeId,moduleContentId,textfieldIndex,diff,revision,userId,timestamp) VALUES(" . $dbi->quote($moduleId) . "," . $dbi->quote($moduleContentTypeId) . "," . $dbi->quote($moduleContentId) . "," . $dbi->quote($textfieldIndex) . "," . $dbi->quote($serializedChanges) . "," . $dbi->quote($maxRevision) . "," . $dbi->quote($login->id) . ",NOW())");
}
return $maxRevision;
}
