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313 lines
10 KiB
313 lines
10 KiB
3 months ago
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//------------------------------------------------------------------------------
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// 此代码版权（除特别声明或在XREF结尾的命名空间的代码）归作者本人若汝棋茗所有
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// 源代码使用协议遵循本仓库的开源协议及附加协议，若本仓库没有设置，则按MIT开源协议授权
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// CSDN博客：https://blog.csdn.net/qq_40374647
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// 哔哩哔哩视频：https://space.bilibili.com/94253567
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// Gitee源代码仓库：https://gitee.com/RRQM_Home
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// Github源代码仓库：https://github.com/RRQM
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// API首页：https://www.yuque.com/rrqm/touchsocket/index
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// 交流QQ群：234762506
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// 感谢您的下载和使用
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//------------------------------------------------------------------------------
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//------------------------------------------------------------------------------
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using System;
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using System.IO;
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using System.Linq;
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using System.Runtime.InteropServices;
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using System.Security.Cryptography;
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namespace TouchSocket.Core
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{
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/// <summary>
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/// 文件操作
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/// </summary>
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//[IntelligentCoder.AsyncMethodPoster(Flags = IntelligentCoder.MemberFlags.Public)]
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public static partial class FileUtility
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{
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/// <summary>
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/// 获取不重复文件名。
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/// <para>例如：New.txt已存在时，会返回New(1).txt</para>
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/// </summary>
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/// <param name="fileName"></param>
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/// <returns></returns>
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public static string GetDuplicateFileName(string fileName)
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{
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if (!File.Exists(fileName))
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{
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return fileName;
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}
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int index = 0;
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while (true)
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{
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index++;
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string newPath = Path.Combine(Path.GetDirectoryName(fileName), $"{Path.GetFileNameWithoutExtension(fileName)}({index}){Path.GetExtension(fileName)}");
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if (!File.Exists(newPath))
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{
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return newPath;
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}
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}
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}
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/// <summary>
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/// 获取不重复文件夹名称.
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/// <para>例如：NewDir已存在时，会返回NewDir(1)</para>
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/// </summary>
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/// <param name="dirName"></param>
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/// <returns></returns>
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public static string GetDuplicateDirectoryName(string dirName)
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{
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if (!Directory.Exists(dirName))
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{
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return dirName;
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}
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int index = 0;
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while (true)
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{
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index++;
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string newPath = Path.Combine(Path.GetDirectoryName(dirName), $"{Path.GetFileNameWithoutExtension(dirName)}({index})");
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if (!System.IO.Directory.Exists(newPath))
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{
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return newPath;
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}
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}
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}
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/// <summary>
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/// 转化为文件大小的字符串，类似10B，10Kb，10Mb，10Gb。
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/// </summary>
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/// <param name="length"></param>
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/// <returns></returns>
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public static string ToFileLengthString(long length)
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{
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if (length < 1024)
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{
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return $"{length}B";
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}
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else if (length < 1024 * 1024)
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{
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return $"{(length / 1024.0).ToString("0.00")}Kb";
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}
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else if (length < 1024 * 1024 * 1024)
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{
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return $"{(length / (1024.0 * 1024)).ToString("0.00")}Mb";
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}
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else
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{
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return $"{(length / (1024.0 * 1024 * 1024)).ToString("0.00")}Gb";
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}
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}
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/// <summary>
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/// 获取文件MD5
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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 string GetFileMD5(string path)
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{
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using (FileStream fileStream = new FileStream(path, FileMode.Open, FileAccess.Read))
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{
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return GetStreamMD5(fileStream);
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}
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}
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/// <summary>
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/// 获取流MD5
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/// </summary>
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/// <param name="fileStream"></param>
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/// <returns></returns>
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public static string GetStreamMD5(Stream fileStream)
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{
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using (HashAlgorithm hash = System.Security.Cryptography.MD5.Create())
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{
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return GetStreamHash(fileStream, hash);
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}
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}
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/// <summary>
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/// 获得文件Hash值
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/// </summary>
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/// <param name="filePath">文件路径</param>
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/// <returns></returns>
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public static string GetFileHash256(string filePath)
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{
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try
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{
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HashAlgorithm hash = SHA256.Create();
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using (FileStream fileStream = File.OpenRead(filePath))
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{
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byte[] HashValue = hash.ComputeHash(fileStream);
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return BitConverter.ToString(HashValue).Replace("-", "");
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}
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}
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catch
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{
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return null;
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}
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}
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/// <summary>
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/// 获得流Hash值
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/// </summary>
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/// <param name="stream"></param>
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/// <returns></returns>
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public static string GetStreamHash256(Stream stream)
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{
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try
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{
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HashAlgorithm hash = SHA256.Create();
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byte[] HashValue = hash.ComputeHash(stream);
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return BitConverter.ToString(HashValue).Replace("-", "");
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}
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catch
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{
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return null;
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}
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}
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/// <summary>
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/// 获得文件Hash值
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/// </summary>
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/// <param name="filePath">文件路径</param>
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/// <param name="hash"></param>
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/// <returns></returns>
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public static string GetFileHash(string filePath, HashAlgorithm hash)
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{
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try
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{
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using (FileStream fileStream = File.OpenRead(filePath))
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{
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byte[] HashValue = hash.ComputeHash(fileStream);
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return BitConverter.ToString(HashValue).Replace("-", "");
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}
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}
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catch
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{
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return null;
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}
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}
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/// <summary>
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/// 获得流Hash值
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/// </summary>
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/// <param name="stream"></param>
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/// <param name="hash"></param>
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/// <returns></returns>
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public static string GetStreamHash(Stream stream, HashAlgorithm hash)
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{
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try
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{
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byte[] HashValue = hash.ComputeHash(stream);
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return BitConverter.ToString(HashValue).Replace("-", "");
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}
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catch
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{
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return null;
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}
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}
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/// <summary>
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/// 获取仅当前文件夹中包含的文件名称，不含全路径。
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/// </summary>
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/// <param name="dirPath"></param>
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/// <returns></returns>
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public static string[] GetIncludeFileNames(string dirPath)
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{
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return Directory.GetFiles(dirPath).Select(s => Path.GetFileName(s)).ToArray();
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}
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/// <summary>
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/// 获取相对路径。
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/// </summary>
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/// <param name="relativeTo"></param>
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/// <param name="path"></param>
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/// <returns></returns>
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/// <exception cref="ArgumentNullException"></exception>
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public static string GetRelativePath(string relativeTo, string path)
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{
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if (string.IsNullOrEmpty(relativeTo)) throw new ArgumentNullException(nameof(relativeTo));
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if (string.IsNullOrEmpty(path)) throw new ArgumentNullException(nameof(path));
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var fromUri = new Uri(relativeTo);
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var toUri = new Uri(path);
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if (fromUri.Scheme != toUri.Scheme)
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{
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// 不是同一种路径，无法转换成相对路径。
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return path;
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}
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if (fromUri.Scheme.Equals("file", StringComparison.InvariantCultureIgnoreCase)
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&& !relativeTo.EndsWith("/", StringComparison.OrdinalIgnoreCase)
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&& !relativeTo.EndsWith("\\", StringComparison.OrdinalIgnoreCase))
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{
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// 如果是文件系统，则视来源路径为文件夹。
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fromUri = new Uri(relativeTo + Path.DirectorySeparatorChar);
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}
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var relativeUri = fromUri.MakeRelativeUri(toUri);
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var relativePath = Uri.UnescapeDataString(relativeUri.ToString());
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if (toUri.Scheme.Equals("file", StringComparison.InvariantCultureIgnoreCase))
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{
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relativePath = relativePath.Replace(Path.AltDirectorySeparatorChar, Path.DirectorySeparatorChar);
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}
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return relativePath;
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}
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/// <summary>
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/// 删除路径文件
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/// </summary>
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/// <param name="path"></param>
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public static void Delete(string path)
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{
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if (File.Exists(path))
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{
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File.SetAttributes(path, FileAttributes.Normal);
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File.Delete(path);
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}
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}
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# if NET45_OR_GREATER
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[DllImport("kernel32.dll")]
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private static extern IntPtr _lopen(string lpPathName, int iReadWrite);
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[DllImport("kernel32.dll")]
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private static extern bool CloseHandle(IntPtr hObject);
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private const int OF_READWRITE = 2;
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private const int OF_SHARE_DENY_NONE = 0x40;
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private static readonly IntPtr HFILE_ERROR = new IntPtr(-1);
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/// <summary>
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/// 判断文件是否被已打开
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/// </summary>
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/// <param name="fileFullName"></param>
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/// <returns></returns>
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public static bool FileIsOpen(string fileFullName)
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{
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if (!File.Exists(fileFullName))
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{
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return false;
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}
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IntPtr handle = _lopen(fileFullName, OF_READWRITE | OF_SHARE_DENY_NONE);
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if (handle == HFILE_ERROR)
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{
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return true;
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}
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CloseHandle(handle);
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return false;
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}
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#endif
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}
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}
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