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<?php
class Debug {
public static $LOG_DISABLED = -1;
public static $LOG_NORMAL = 0;
public static $LOG_VERBOSE = 1;
public static $LOG_EXTENDED = 2;
private static $enabled = false;
private static $quiet = false;
private static $logfile = false;
private static $loglevel = 0;
public static function set_logfile($logfile) {
self::$logfile = $logfile;
}
public static function enabled() {
return self::$enabled;
}
public static function set_enabled($enable) {
self::$enabled = $enable;
}
public static function set_quiet($quiet) {
self::$quiet = $quiet;
}
public static function set_loglevel($level) {
self::$loglevel = $level;
}
public static function get_loglevel() {
return self::$loglevel;
}
public static function log($message, $level = 0) {
if (!self::$enabled || self::$loglevel < $level) return false;
$ts = strftime("%H:%M:%S", time());
if (function_exists('posix_getpid')) {
$ts = "$ts/" . posix_getpid();
}
if (self::$logfile) {
$fp = fopen(self::$logfile, 'a+');
if ($fp) {
$locked = false;
if (function_exists("flock")) {
$tries = 0;
// try to lock logfile for writing
while ($tries < 5 && !$locked = flock($fp, LOCK_EX | LOCK_NB)) {
sleep(1);
++$tries;
}
if (!$locked) {
fclose($fp);
user_error("Unable to lock debugging log file: " . self::$logfile, E_USER_WARNING);
return;
}
}
fputs($fp, "[$ts] $message\n");
if (function_exists("flock")) {
flock($fp, LOCK_UN);
}
fclose($fp);
if (self::$quiet)
return;
} else {
user_error("Unable to open debugging log file: " . self::$logfile, E_USER_WARNING);
}
}
print "[$ts] $message\n";
}
}
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