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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.IO;
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using System.Runtime.InteropServices;
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namespace demo.ClassHelper.DirectoryOperate
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{
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class DirectoryOperate
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{
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/// <summary>
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/// 调用WinApi获取磁盘空闲空间
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/// </summary>
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/// <param name="rootPathName"></param>
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/// <param name="sectorsPerCluster"></param>
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/// <param name="bytesPerSector"></param>
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/// <param name="numberOfFreeClusters"></param>
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/// <param name="totalNumbeOfClusters"></param>
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/// <returns></returns>
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[DllImport("kernel32.dll", CharSet = CharSet.Auto)]
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public static extern bool GetDiskFreeSpace([MarshalAs(UnmanagedType.LPTStr)]string rootPathName,
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ref int sectorsPerCluster, ref int bytesPerSector, ref int numberOfFreeClusters, ref int totalNumbeOfClusters);
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/// <summary>
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/// 获取指定路径的大小
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/// </summary>
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/// <param name="dirPath">路径</param>
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/// <returns></returns>
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public static long GetDirectoryLength(string dirPath)
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{
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long len = 0;
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//判断该路径是否存在（是否为文件夹）
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if (!Directory.Exists(dirPath))
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{
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//查询文件的大小
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len = FileSize(dirPath);
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}
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else
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{
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//定义一个DirectoryInfo对象
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DirectoryInfo di = new DirectoryInfo(dirPath);
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//通过GetFiles方法，获取di目录中的所有文件的大小
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foreach (FileInfo fi in di.GetFiles())
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{
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len += fi.Length;
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}
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//获取di中所有的文件夹，并存到一个新的对象数组中，以进行递归
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DirectoryInfo[] dis = di.GetDirectories();
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if (dis.Length > 0)
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{
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for (int i = 0; i < dis.Length; i++)
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{
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len += GetDirectoryLength(dis[i].FullName);
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}
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}
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}
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return len;
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}
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/// <summary>
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/// 删除文件夹
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/// </summary>
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/// <param name="srcPath"></param>
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public static void DelectDir(string srcPath)
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{
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try
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{
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DirectoryInfo dir = new DirectoryInfo(srcPath);
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FileSystemInfo[] fileinfo = dir.GetFileSystemInfos(); //返回目录中所有文件和子目录
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foreach (FileSystemInfo i in fileinfo)
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{
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if (i is DirectoryInfo) //判断是否文件夹
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{
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DirectoryInfo subdir = new DirectoryInfo(i.FullName);
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subdir.Delete(true); //删除子目录和文件
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}
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else
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{
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File.Delete(i.FullName); //删除指定文件
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}
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}
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}
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catch
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{
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}
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}
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public static void DeleteAppointedDir(string path, double day)
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{
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try
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{
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var file = Directory.GetDirectories(path).Select(d => new DirectoryInfo(d))
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.Where(d => d.CreationTime < DateTime.Now.AddDays(-day) &&
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d.GetFiles().Length > 0);
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foreach (var s in file)
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{
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s.Delete();
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}
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}
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catch
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{ }
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}
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public static void DeleteAppointedFile(string path, double day)
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{
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DirectoryInfo dyInfo = new DirectoryInfo(path);
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//获取文件夹下所有的文件
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foreach (FileInfo feInfo in dyInfo.GetFiles())
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{
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//判断文件日期是否小于今天，是则删除
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if (feInfo.CreationTime < DateTime.Now.AddDays(-day))
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feInfo.Delete();
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}
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}
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/// <summary>
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/// 获取指定路径的占用空间
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/// </summary>
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/// <param name="dirPath">路径</param>
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/// <returns></returns>
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public static long GetDirectorySpace(string dirPath)
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{
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//返回值
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long len = 0;
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//判断该路径是否存在（是否为文件夹）
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if (!Directory.Exists(dirPath))
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{
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//如果是文件，则调用
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len = FileSpace(dirPath);
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}
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else
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{
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//定义一个DirectoryInfo对象
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DirectoryInfo di = new DirectoryInfo(dirPath);
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//本机的簇值
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long clusterSize = GetClusterSize(di);
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//遍历目录下的文件，获取总占用空间
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foreach (FileInfo fi in di.GetFiles())
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{
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//文件大小除以簇，余若不为0
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if (fi.Length % clusterSize != 0)
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{
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decimal res = fi.Length / clusterSize;
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//文件大小除以簇，取整数加1。为该文件占用簇的值
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int clu = Convert.ToInt32(Math.Ceiling(res)) + 1;
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long result = clusterSize * clu;
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len += result;
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}
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else
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{
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//余若为0，则占用空间等于文件大小
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len += fi.Length;
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}
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}
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//获取di中所有的文件夹，并存到一个新的对象数组中，以进行递归
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DirectoryInfo[] dis = di.GetDirectories();
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if (dis.Length > 0)
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{
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for (int i = 0; i < dis.Length; i++)
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{
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len += GetDirectorySpace(dis[i].FullName);
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}
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}
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}
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return len;
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}
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//所给路径中所对应的文件大小
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public static long FileSize(string filePath)
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{
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//定义一个FileInfo对象，是指与filePath所指向的文件相关联，以获取其大小
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FileInfo fileInfo = new FileInfo(filePath);
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return fileInfo.Length;
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}
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//所给路径中所对应的文件占用空间
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public static long FileSpace(string filePath)
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{
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long temp = 0;
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//定义一个FileInfo对象，是指与filePath所指向的文件相关联，以获取其大小
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FileInfo fileInfo = new FileInfo(filePath);
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long clusterSize = GetClusterSize(fileInfo);
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if (fileInfo.Length % clusterSize != 0)
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{
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decimal res = fileInfo.Length / clusterSize;
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int clu = Convert.ToInt32(Math.Ceiling(res)) + 1;
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temp = clusterSize * clu;
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}
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else
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{
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return fileInfo.Length;
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}
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return temp;
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}
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public static DiskInfo GetDiskInfo(string rootPathName)
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{
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DiskInfo diskInfo = new DiskInfo();
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int sectorsPerCluster = 0, bytesPerSector = 0, numberOfFreeClusters = 0, totalNumberOfClusters = 0;
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GetDiskFreeSpace(rootPathName, ref sectorsPerCluster, ref bytesPerSector, ref numberOfFreeClusters, ref totalNumberOfClusters);
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//每簇的扇区数
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diskInfo.SectorsPerCluster = sectorsPerCluster;
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//每扇区字节
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diskInfo.BytesPerSector = bytesPerSector;
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return diskInfo;
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}
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//// <summary>
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/// 结构。硬盘信息
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/// </summary>
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public struct DiskInfo
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{
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// public string RootPathName;
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//每簇的扇区数
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public int SectorsPerCluster;
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//每扇区字节
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public int BytesPerSector;
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//public int NumberOfFreeClusters;
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//public int TotalNumberOfClusters;
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}
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/// <summary>
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/// 获取每簇的字节
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/// </summary>
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/// <param name="file">指定文件</param>
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/// <returns></returns>
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public static long GetClusterSize(FileInfo file)
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{
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long clusterSize = 0;
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DiskInfo diskInfo = new DiskInfo();
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diskInfo = GetDiskInfo(file.Directory.Root.FullName);
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clusterSize = (diskInfo.BytesPerSector * diskInfo.SectorsPerCluster);
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return clusterSize;
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}
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/// <summary>
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/// 获取每簇的字节
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/// </summary>
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/// <param name="dir">指定目录</param>
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/// <returns></returns>
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public static long GetClusterSize(DirectoryInfo dir)
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{
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long clusterSize = 0;
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DiskInfo diskInfo = new DiskInfo();
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diskInfo = GetDiskInfo(dir.Root.FullName);
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clusterSize = (diskInfo.BytesPerSector * diskInfo.SectorsPerCluster);
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return clusterSize;
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}
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public static bool GetFiles(string dirPath, string patten, ref List<string> fileList)
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{
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if (!Directory.Exists(dirPath) || patten == string.Empty)
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{
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return false;
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}
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try
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{
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DirectoryInfo dirInfo = new DirectoryInfo(dirPath);
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foreach (FileInfo info in dirInfo.GetFiles())
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{
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fileList.Add(info.Name.Split('.')[0]);
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}
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return true;
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}
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catch (System.Exception ex)
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{
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string str = ex.ToString();
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return false;
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}
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}
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}
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}
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