/**
* Runs when DG is uninstalled.
*/
public static function uninstall()
{
if (!current_user_can('activate_plugins')) {
return;
}
check_admin_referer('bulk-plugins');
$blogs = array(null);
if (is_multisite()) {
$blogs = DG_Util::getBlogIds();
}
foreach ($blogs as $blog) {
self::_uninstall($blog);
}
wp_clear_scheduled_hook(DG_Logger::PurgeLogsAction);
}
/**
* Truncates all blog logs to the current purge interval.
*
* TODO: This is a memory hog. Consider switching to stream filter.
*/
public static function purgeExpiredEntries()
{
self::writeLog(DG_LogLevel::Detail, 'Beginning scheduled log file purge.');
$blogs = array(null);
if (is_multisite()) {
$blogs = DG_Util::getBlogIds();
}
// truncate each blog's log file
$time = time();
foreach ($blogs as $blog) {
$blog_num = !is_null($blog) ? $blog : get_current_blog_id();
$options = self::getOptions($blog);
$purge_interval = $options['purge_interval'] * DAY_IN_SECONDS;
// purging is disabled for this blog
if ($purge_interval <= 0) {
continue;
}
// do perge for this blog
$file = self::getLogFileName($blog_num);
if (file_exists($file)) {
$fp = @fopen($file, 'r');
if ($fp !== false) {
$truncate = false;
$offset = 0;
// find the first non-expired entry
while (($fields = fgetcsv($fp)) !== false) {
if (!is_null($fields) && $time > $fields[0] + $purge_interval) {
// we've reached the recent entries -- nothing beyond here will be removed
break;
}
$truncate = true;
$offset = @ftell($fp);
if (false === $offset) {
break;
}
}
@fclose($fp);
// if any expired entries exist -- remove them from the file
if ($truncate) {
self::writeLog(DG_LogLevel::Detail, "Purging log entries for blog #{$blog_num}.");
$data = file_get_contents($file, false, null, $offset);
file_put_contents($file, $data, LOCK_EX);
}
}
}
}
}
