107 lines
3.2 KiB
C#
107 lines
3.2 KiB
C#
using System;
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using System.IO;
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namespace AibisDream.Kit
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{
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internal class FileLogger
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{
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private StreamWriter _fileWriter;
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private readonly string _filename;
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private readonly string _filePath;
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private readonly int _saveDays;
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private static string CurrentDay => DateTime.Now.ToString("yyyyMMdd");
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private string _currentLogDay;
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private string _preSavePath;
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/// <summary>
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/// 开始打印
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/// </summary>
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public FileLogger(string filename, string filePath, int saveDays, string version = null)
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{
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_filename = filename;
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_filePath = filePath.TrimEnd('/') + "/";
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_saveDays = saveDays;
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StartNewFile();
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DeleteOldFile();
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_currentLogDay = CurrentDay;
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// 在日志开头写入版本号信息
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if (!string.IsNullOrEmpty(version))
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{
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Write($"Version: {version}\n");
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}
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Write("*********************************************************\nSystem Start at " +
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DateTime.Now.ToString("HH:mm:ss") +
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"\n*********************************************************\n");
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}
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/// <summary>
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/// 新建文件
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/// </summary>
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private void StartNewFile()
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{
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if (_fileWriter != null)
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{
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_fileWriter.Close();
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_fileWriter.Dispose();
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}
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_fileWriter = null;
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if (!Directory.Exists(_filePath))
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{
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Directory.CreateDirectory(_filePath);
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}
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_fileWriter = File.AppendText(_filePath + string.Format(_filename, DateTime.Now));
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_fileWriter.AutoFlush = true; // 启用自动刷新，实现流式写入
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}
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public void Write(string content)
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{
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System.Globalization.CultureInfo.CurrentCulture.ClearCachedData();
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if (_currentLogDay != CurrentDay)
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{
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StartNewFile();
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DeleteOldFile();
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_currentLogDay = CurrentDay;
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}
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if (_fileWriter is { BaseStream: { CanWrite: true } })
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_fileWriter.WriteLine(content);
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}
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void DeleteOldFile()
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{
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var fileList = Directory.GetFiles(_filePath);
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if (fileList.Length > _saveDays)
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{
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_preSavePath = _filePath + string.Format(this._filename, DateTime.Now.AddDays(-_saveDays + 1));
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foreach (var t in fileList)
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{
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if (string.CompareOrdinal(_preSavePath, t) == 1)
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{
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File.Delete(t);
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}
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}
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}
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}
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public void OnDestroy()
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{
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if (_fileWriter == null)
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return;
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Write("*********************************************************\nSystem Shutdown at " +
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DateTime.Now.ToString("HH:mm:ss") +
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"\n*********************************************************\n");
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_fileWriter.Flush();
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_fileWriter.Close();
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_fileWriter = null;
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}
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}
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} |