Function LogInternal

engine/dlib/src/dlib/log.cpp:664–775

void LogInternal(LogSeverity severity, const char* domain, const char* format, ...)
{
    if (severity < dmLog::g_LogLevel)
    {
        return;
    }

    // In release mode, if there are no custom listeners, and no log.txt file, we'll return here
    bool is_debug_mode = dLib::IsDebugMode();
    if (!is_debug_mode && !dmLog::g_LogFile && (dmAtomicGet32(&dmLog::g_ListenersCount) == 0))
    {
        return;
    }

    va_list lst;
    va_start(lst, format);

    const char* severity_str = 0;
    switch (severity)
    {
        case LOG_SEVERITY_DEBUG:        severity_str = "DEBUG"; break;
        case LOG_SEVERITY_USER_DEBUG:   severity_str = "DEBUG"; break;
        case LOG_SEVERITY_INFO:         severity_str = "INFO"; break;
        case LOG_SEVERITY_WARNING:      severity_str = "WARNING"; break;
        case LOG_SEVERITY_ERROR:        severity_str = "ERROR"; break;
        case LOG_SEVERITY_FATAL:        severity_str = "FATAL"; break;
        default:
            assert(0);
            break;
    }

    char tmp_buf[sizeof(dmLog::LogMessage) + dmLog::MAX_STRING_SIZE];
    dmLog::LogMessage* msg = (dmLog::LogMessage*) &tmp_buf[0];
    char* str_buf = &tmp_buf[sizeof(dmLog::LogMessage)];

    int n = 0;
    n += dmSnPrintf(str_buf + n, dmLog::MAX_STRING_SIZE - n, "%s:%s: ", severity_str, domain);
    if (n < dmLog::MAX_STRING_SIZE)
    {
        int length = vsnprintf(str_buf + n, dmLog::MAX_STRING_SIZE - n, format, lst);
        if (length > 0)
        {
            n += length;
        }
    }

    if (n < dmLog::MAX_STRING_SIZE)
    {
        dmSnPrintf(str_buf + n, dmLog::MAX_STRING_SIZE - n, "\n");
        ++n; // Since dmSnPrintf returns -1 on truncation, don't add the return value to n, and instead increment n separately
    }

    if (n >= dmLog::MAX_STRING_SIZE)
    {
        strcpy(&str_buf[dmLog::MAX_STRING_SIZE - (strlen(dmLog::LOG_OUTPUT_TRUNCATED_MESSAGE) + 1)], dmLog::LOG_OUTPUT_TRUNCATED_MESSAGE);
    }

    str_buf[dmLog::MAX_STRING_SIZE-1] = '\0';