function test_get_list_backups()
{
$backuplist = get_list_backups('1');
if (!empty($backuplist)) {
$this->assertTrue(true);
}
}
function generate_incrementals($courseid)
{
global $CFG;
//check XDELTA is installed.
if (!check_xdelta_installed()) {
mtrace(get_string('xdeltanotinstalled', 'local'));
return false;
}
$incremental_config = backup_get_config();
//set directory paths
if (!empty($incremental_config->backup_inc_destination)) {
$backuppath = $incremental_config->backup_inc_destination . '/' . $courseid . '/';
} else {
$backuppath = $CFG->dataroot . '/' . $courseid . '/backupdata/';
}
$backuplist = get_list_backups($courseid);
$latestbackup = $backuplist[0];
foreach ($backuplist as $id => $backup) {
if ($id != 0) {
if (!create_incremental($courseid, $backup, $latestbackup)) {
//don't generate any more incrementals as the $backup is the same as $latestbackup and we don't need to keep this backup at all.
unlink($backuppath . $latestbackup);
//delete new backup as it isn't needed.
mtrace(get_string('coursenotchanged', 'local'));
break;
//stop running more incrementals.
}
}
}
//now cleanup incremental files that are no longer needed.
$incrementallist = get_list_backups($courseid, true);
foreach ($incrementallist as $incremental) {
$findstr = strpos($incremental, md5($latestbackup));
if (!$findstr) {
unlink($backuppath . 'incrementals/' . $incremental);
}
}
return true;
}
