Method Init

Source/Engine/Core/Log.cpp:40–117

Delegate<LogType, const StringView&> Log::Logger::OnError;

bool Log::Logger::Init()
{
    LogStartTime = Time::StartupTime;

    // Skip if disabled
    if (!IsLogEnabled())
        return false;
    PROFILE_MEM(Engine);

    // Create logs directory (if is missing)
#if USE_EDITOR
    const String logsDirectory = Globals::ProjectFolder / TEXT("Logs");
#else
    const String logsDirectory = Globals::ProductLocalFolder / TEXT("Logs");
#endif
    if (FileSystem::CreateDirectory(logsDirectory))
    {
        return true;
    }

#if USE_EDITOR
    // Remove old log files
    int32 filesDeleted = 0;
    Array<String> oldLogs;
    if (!FileSystem::DirectoryGetFiles(oldLogs, logsDirectory, TEXT("*.txt"), DirectorySearchOption::TopDirectoryOnly))
    {
        // Check if there are any files to delete
        const int32 maxLogFiles = 20;
        int32 remaining = oldLogs.Count() - maxLogFiles + 1;
        if (remaining > 0)
        {
            Sorting::QuickSort(oldLogs);

            // Delete the oldest logs
            int32 i = 0;
            while (remaining > 0)
            {
                FileSystem::DeleteFile(oldLogs[i++]);
                filesDeleted++;
                remaining--;
            }
        }
    }
#endif

    // Create log file path
    const String filename = TEXT("Log_") + LogStartTime.ToFileNameString() + TEXT(".txt");
    LogFilePath = logsDirectory / filename;

    // Open file
    LogFile = FileWriteStream::Open(LogFilePath);
    if (LogFile == nullptr)
    {
        return true;
    }
    LogTotalErrorsCnt = 0;
    LogAfterInit = true;
#if LOG_ENABLE_WINDOWS_SINGLE_NEW_LINE_CHAR