// Admin.NET 项目的版权、商标、专利和其他相关权利均受相应法律法规的保护。使用本项目应遵守相关法律法规和许可证的要求。
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//
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// 本项目主要遵循 MIT 许可证和 Apache 许可证（版本 2.0）进行分发和使用。许可证位于源代码树根目录中的 LICENSE-MIT 和 LICENSE-APACHE 文件。
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//
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// 不得利用本项目从事危害国家安全、扰乱社会秩序、侵犯他人合法权益等法律法规禁止的活动！任何基于本项目二次开发而产生的一切法律纠纷和责任，我们不承担任何责任！
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namespace Admin.NET.Core;
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/// <summary>
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/// 文件帮助类
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/// </summary>
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public static class FileHelper
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{
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/// <summary>
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/// 尝试删除文件/目录
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/// </summary>
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/// <param name="path"></param>
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/// <returns></returns>
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public static bool TryDelete(string path)
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{
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try
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{
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if (string.IsNullOrEmpty(path)) return false;
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if (Directory.Exists(path)) Directory.Delete(path, recursive: true);
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else File.Delete(path);
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return true;
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}
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catch (Exception)
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{
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// ignored
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return false;
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}
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}
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/// <summary>
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/// 复制目录
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/// </summary>
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/// <param name="sourceDir"></param>
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/// <param name="destinationDir"></param>
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/// <param name="overwrite"></param>
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public static void CopyDirectory(string sourceDir, string destinationDir, bool overwrite = false)
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{
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// 检查源目录是否存在
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if (!Directory.Exists(sourceDir)) throw new DirectoryNotFoundException("Source directory not found: " + sourceDir);
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// 如果目标目录不存在，则创建它
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if (!Directory.Exists(destinationDir)) Directory.CreateDirectory(destinationDir!);
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// 获取源目录下的所有文件并复制它们
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foreach (string file in Directory.GetFiles(sourceDir))
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{
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string name = Path.GetFileName(file);
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string dest = Path.Combine(destinationDir, name);
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File.Copy(file, dest, overwrite);
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}
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// 递归复制所有子目录
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foreach (string directory in Directory.GetDirectories(sourceDir))
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{
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string name = Path.GetFileName(directory);
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string dest = Path.Combine(destinationDir, name);
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CopyDirectory(directory, dest, overwrite);
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}
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}
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/// <summary>
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/// 在文件倒数第lastIndex个identifier前插入内容（备份原文件）
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/// </summary>
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/// <param name="filePath">文件路径</param>
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/// <param name="insertContent">要插入的内容</param>
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/// <param name="identifier">标识符号</param>
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/// <param name="lastIndex">倒数第几个标识符</param>
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/// <param name="createBackup">是否创建备份文件</param>
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public static async Task InsertsStringAtSpecifiedLocationInFile(string filePath, string insertContent, char identifier, int lastIndex, bool createBackup = false)
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{
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// 参数校验
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if (lastIndex < 1) throw new ArgumentOutOfRangeException(nameof(lastIndex));
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if (identifier == 0) throw new ArgumentException("标识符不能为空字符");
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if (!File.Exists(filePath))
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throw new FileNotFoundException("目标文件不存在", filePath);
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// 创建备份文件
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if (createBackup)
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{
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string backupPath = $"{filePath}.bak_{DateTime.Now:yyyyMMddHHmmss}";
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File.Copy(filePath, backupPath, true);
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}
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using var reader = new StreamReader(filePath, Encoding.UTF8);
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var content = await reader.ReadToEndAsync();
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reader.Close();
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// 逆向查找算法
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int index = content.LastIndexOf(identifier);
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if (index == -1)
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{
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throw new ArgumentException($"文件中未包含{identifier}");
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}
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int resIndex = content.LastIndexOf(identifier, index - lastIndex);
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if (resIndex == -1)
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{
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throw new ArgumentException($"文件中{identifier}不足{lastIndex}个");
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}
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StringBuilder sb = new StringBuilder(content);
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sb = sb.Insert(resIndex, insertContent);
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await WriteToFileAsync(filePath, sb);
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}
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/// <summary>
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/// 写入文件内容
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/// </summary>
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/// <param name="filePath"></param>
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/// <param name="sb"></param>
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public static async Task WriteToFileAsync(string filePath, StringBuilder sb)
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{
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Console.ForegroundColor = ConsoleColor.DarkGreen;
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await using var writer = new StreamWriter(filePath, false, new UTF8Encoding(false)); // 无BOM
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await writer.WriteAsync(sb.ToString());
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writer.Close();
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Console.WriteLine($"文件【{filePath}】写入完成");
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Console.ResetColor();
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}
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}
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