asl.swift

static func systemLogs(count: Int = 30) -> [LogEntry] {
    let q = asl_new(UInt32(ASL_TYPE_QUERY))
    var logs = [LogEntry]()
    let r = asl_search(nil, q)
    var m = asl_next(r)
    let keysNeeded = [ASL_KEY_MSG, ASL_KEY_TIME, ASL_KEY_LEVEL]
    while logs.count < count && m != nil {
        var logDict = [String: String]()
        for key in keysNeeded {
            if let val = String.fromCString(asl_get(m, key)) {
                logDict[key] = val
            }
        }
        if let entry = LogEntry(aslDict: logDict) {
            logs.append(entry)
        }
        m = asl_next(r)
    }
    asl_release(r)
    return logs.sorted { $0.timestamp < $1.timestamp }
}