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785 lines
29 KiB
785 lines
29 KiB
using Apewer.Internals;
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using System;
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using System.Collections.Generic;
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using System.IO;
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using System.Reflection;
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using System.Security.Permissions;
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namespace Apewer
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{
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/// <summary>存储实用工具。</summary>
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public static class StorageUtility
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{
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private static Exception Try(Action action)
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{
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try { action?.Invoke(); return null; }
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catch (Exception ex) { return ex; }
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}
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/// <summary>文件操作线程锁。</summary>
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public static object Locker = new object();
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#region NTFS 流
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/// <summary>搜索文件是否在 NTFS 流中附带了锁定标记。</summary>
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/// <remarks>此方法仅支持 Windows 系统。</remarks>
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public static bool HasZoneIdentifier(string path)
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{
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var info = new FileInfo(path);
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var streamPath = info.FullName + NtfsUnlocker.Postfix;
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var streamExists = NtfsUnlocker.FileExists(streamPath);
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return streamExists;
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}
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/// <summary>解锁下载的文件。</summary>
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/// <remarks>此方法仅支持 Windows 系统。</remarks>
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public static string DeleteZoneIdentifier(string path) => NtfsUnlocker.DeleteZoneIdentifier(path);
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#endregion
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#region delete
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/// <summary>删除文件。</summary>
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public static Exception DeleteFile(string path, bool useTemp = false)
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{
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if (useTemp)
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{
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try
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{
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if (string.IsNullOrEmpty(path)) return new ArgumentException();
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if (!File.Exists(path)) return new FileNotFoundException();
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Try(() => new FileInfo(path).Attributes = FileAttributes.Normal);
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var temp = Environment.GetEnvironmentVariable("TEMP");
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var name = Path.GetFileName(path);
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var dest = null as string;
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while (dest == null || File.Exists(dest))
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{
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var guid = Guid.NewGuid().ToString("n").Substring(0, 8);
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dest = $"trash_{guid}_{name}";
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}
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File.Move(path, dest);
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File.Delete(dest);
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return null;
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}
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catch (Exception ex) { return ex; }
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}
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try
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{
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File.Delete(path);
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return null;
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}
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catch (Exception ex) { return ex; }
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}
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/// <summary>删除目录、子目录和子文件。</summary>
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public static Exception DeleteDirectory(string path, bool useTemp = false)
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{
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if (useTemp)
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{
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try
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{
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if (string.IsNullOrEmpty(path)) return new ArgumentException();
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if (!Directory.Exists(path)) return new DirectoryNotFoundException();
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var temp = Environment.GetEnvironmentVariable("TEMP");
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var name = Path.GetDirectoryName(path);
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var dest = null as string;
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while (dest == null || Directory.Exists(dest))
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{
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var guid = Guid.NewGuid().ToString("n").Substring(0, 8);
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dest = $"trash_{guid}_{name}";
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}
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Directory.Move(path, dest);
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Directory.Delete(dest, true);
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return null;
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}
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catch (Exception ex) { return ex; }
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}
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try
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{
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Directory.Delete(path, true);
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return null;
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}
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catch (Exception ex) { return ex; }
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}
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#endregion
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#region path
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/// <summary>无效的路径字符。</summary>
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public static char[] InvalidPathChars
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{
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// SMB 共享文件夹无效字符
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// ! " # % & ' ( ) * + , / : ; < = > ? @ [ ] \ ^ ` { } | ~
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get => new char[] {
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'\\', '/', '\'', '"', ':', '*', '?', '<', '>', '|',
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'\0', '\a', '\b', '\t', '\n', '\v', '\f', '\r',
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'\u0001', '\u0002', '\u0003', '\u0004', '\u0005', '\u0006', '\u000e', '\u000f',
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'\u0010', '\u0011', '\u0012', '\u0013', '\u0014', '\u0015', '\u0016', '\u0017',
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'\u0018', '\u0019', '\u001a', '\u001b', '\u001c', '\u001d', '\u001e', '\u001f'
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};
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}
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/// <summary>合并路径。</summary>
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public static string CombinePath(params string[] paths)
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{
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if (paths == null || paths.Length < 1) return "";
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try
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{
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#if NET20
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var result = paths[0];
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for (var i = 0; i < paths.Length; i++)
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{
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result = Path.Combine(result, paths[i]);
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}
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return result;
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#else
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return Path.Combine(paths);
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#endif
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}
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catch { return ""; }
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}
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/// <summary>获取文件或目录的存在状态。</summary>
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public static bool PathExists(string path)
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{
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if (string.IsNullOrEmpty(path)) return false;
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if (File.Exists(path)) return true;
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if (Directory.Exists(path)) return true;
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return false;
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}
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/// <summary>获取目录的存在状态。</summary>
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public static bool DirectoryExists(string path) => string.IsNullOrEmpty(path) ? false : Directory.Exists(path);
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/// <summary>获取文件的存在状态。</summary>
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public static bool FileExists(string path) => string.IsNullOrEmpty(path) ? false : File.Exists(path);
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/// <summary>获取文件或目录的上级目录完整路径,失败时返回 NULL 值。。</summary>
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public static string GetParentPath(string path)
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{
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try
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{
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if (File.Exists(path)) return Path.GetDirectoryName(path);
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if (Directory.Exists(path)) return Directory.GetParent(path).FullName;
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}
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catch { }
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return null;
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}
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/// <summary>修正文件名,去除不允许的字符。</summary>
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public static string FixFileName(string fileName)
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{
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var result = fileName;
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if (string.IsNullOrEmpty(result))
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{
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result = Constant.EmptyString;
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}
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else
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{
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var invalid = InvalidPathChars;
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foreach (var c in invalid) result = result.Replace(c.ToString(), "");
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}
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if (result.Length > 0) result = result.Trim();
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return result;
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}
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/// <summary>获取指定目录的子目录,可指定递归子目录。</summary>
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public static List<string> GetSubDirectories(string dirPath, bool recursive = false, bool recurPrecedence = true) => GetSubDirectories(dirPath, recursive ? -1 : 0, recurPrecedence);
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/// <summary>获取指定目录下子目录的路径。</summary>
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/// <param name="dirPath">顶级目录。</param>
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/// <param name="recurDepth">子目录递归深度,指定为 0 时不递归,指定为 -1 时无限递归。</param>
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/// <param name="recurPrecedence">优先排列递归项。</param>
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public static List<string> GetSubDirectories(string dirPath, int recurDepth, bool recurPrecedence = true)
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{
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var list = new List<string>();
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if (string.IsNullOrEmpty(dirPath)) return list;
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var directories = new string[0];
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try
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{
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directories = Directory.GetDirectories(dirPath);
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}
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catch { }
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foreach (var dir in directories)
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{
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var recurlist = new List<string>();
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if (recurDepth != 0)
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{
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var depth = (recurDepth > 0) ? recurDepth - 1 : recurDepth;
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var subrecur = GetSubDirectories(dir, depth, recurPrecedence);
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recurlist.AddRange(subrecur);
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}
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if (recurPrecedence)
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{
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list.AddRange(recurlist);
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list.Add(dir);
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}
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else
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{
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list.Add(dir);
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list.AddRange(recurlist);
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}
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}
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return list;
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}
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/// <summary>获取指定目录的子文件。</summary>
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/// <param name="dirPath">要查询的目录。</param>
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/// <param name="recursive">递归子目录。</param>
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/// <param name="recurPrecedence">优先排列递归项。</param>
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public static List<string> GetSubFiles(string dirPath, bool recursive = false, bool recurPrecedence = true) => GetSubFiles(dirPath, recursive ? -1 : 0, recurPrecedence);
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/// <summary>获取指定目录下子文件的路径。</summary>
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/// <param name="dirPath">要查询的目录。</param>
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/// <param name="recurDepth">子目录递归深度,指定为 0 时不递归,指定为 -1 时无限递归。</param>
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/// <param name="recurPrecedence">优先排列递归项。</param>
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public static List<string> GetSubFiles(string dirPath, int recurDepth, bool recurPrecedence = true)
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{
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var list = new List<string>();
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if (string.IsNullOrEmpty(dirPath)) return list;
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var dirs = new List<string>();
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if (recurDepth == 0)
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{
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dirs.Add(dirPath);
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}
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else
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{
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var recurdicrotylist = GetSubDirectories(dirPath, recurDepth, recurPrecedence);
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if (recurPrecedence)
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{
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dirs.AddRange(recurdicrotylist);
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dirs.Add(dirPath);
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}
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else
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{
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dirs.Add(dirPath);
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dirs.AddRange(recurdicrotylist);
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}
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}
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foreach (var d in dirs)
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{
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try
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{
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var files = System.IO.Directory.GetFiles(d);
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list.AddRange(files);
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}
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catch { }
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}
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return list;
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}
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#endregion
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#region directory
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/// <summary>确信指定存在指定目录。</summary>
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public static bool AssureDirectory(string path)
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{
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if (string.IsNullOrEmpty(path)) return false;
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try
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{
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if (File.Exists(path)) return false;
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if (Directory.Exists(path)) return true;
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var created = Directory.CreateDirectory(path);
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return created.Exists;
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}
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catch { }
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return false;
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}
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/// <summary>确信指定存在指定路径所在的上级目录。</summary>
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public static bool AssureParent(string path)
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{
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if (string.IsNullOrEmpty(path)) return false;
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var parent = Constant.EmptyString;
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try { parent = Directory.GetParent(path).FullName; } catch { }
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var result = AssureDirectory(parent);
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return result;
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}
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#endregion
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#region file
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/// <summary>打开文件,并获取文件流。若文件不存在,则先创建文件;若获取失败,则返回 NULL 值。可选文件的锁定状态。</summary>
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public static FileStream OpenFile(string path, bool share = true)
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{
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try
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{
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if (string.IsNullOrEmpty(path)) return null;
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if (DirectoryExists(path)) return null;
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if (AssureParent(path))
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{
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var m = FileMode.OpenOrCreate;
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var a = FileAccess.ReadWrite;
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var s = share ? FileShare.ReadWrite : FileShare.None;
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var stream = new FileStream(path, m, a, s);
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return stream;
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}
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}
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catch { }
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return null;
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}
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/// <summary>确保指定路径存在文件,若不存在则新建。</summary>
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/// <param name="path">文件路径。</param>
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public static bool AssureFile(string path)
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{
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if (string.IsNullOrEmpty(path)) return false;
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if (File.Exists(path)) return true;
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if (Directory.Exists(path)) return false;
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if (!AssureParent(path)) return false;
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try
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{
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File.Create(path).Dispose();
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return true;
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}
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catch
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{
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return false;
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}
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}
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/// <summary>创建一个空文件且不保留句柄。</summary>
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/// <param name="path">文件路径,若已存在则返回失败。</param>
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/// <param name="length">文件长度(字节数)。</param>
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/// <param name="replace">替换现有文件。</param>
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/// <returns>创建成功。</returns>
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public static bool CreateFile(string path, long length = 0, bool replace = false)
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{
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if (string.IsNullOrEmpty(path)) return false;
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if (!replace && File.Exists(path)) return false;
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if (!AssureParent(path)) return false;
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lock (Locker)
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{
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var file = null as FileStream;
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var success = false;
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try
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{
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var m = replace ? FileMode.Create : FileMode.OpenOrCreate;
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file = new FileStream(path, m, FileAccess.ReadWrite, FileShare.ReadWrite);
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if (length > 0) file.SetLength(length);
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success = true;
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}
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catch { }
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RuntimeUtility.Dispose(file);
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return success;
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}
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}
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/// <summary>复制文件。</summary>
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/// <param name="source">旧路径。</param>
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/// <param name="destination">新路径。</param>
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/// <param name="replace">新路径存在时,替换新文件。</param>
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public static bool CopyFile(string source, string destination, bool replace = true)
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{
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if (string.IsNullOrEmpty(source)) return false;
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if (string.IsNullOrEmpty(destination)) return false;
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lock (Locker)
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{
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if (!FileExists(source)) return false;
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try
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{
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File.Copy(source, destination, replace);
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return true;
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}
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catch { return false; }
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}
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}
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/// <summary>向文件追加数据。文件不存在时将创建。</summary>
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public static bool AppendFile(string path, params byte[] bytes)
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{
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if (bytes == null || bytes.Length < 1) return false;
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lock (Locker)
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{
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var assured = AssureParent(path);
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if (!assured) return false;
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using (var file = OpenFile(path, true))
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{
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if (file == null) return false;
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try
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{
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file.Position = file.Length;
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file.Write(bytes, 0, bytes.Length);
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file.Flush();
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return true;
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}
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catch { return false; }
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}
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}
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}
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/// <summary>将数据写入新文件,若文件已存在则覆盖。</summary>
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public static bool WriteFile(string path, params byte[] bytes) => WriteFile(path, false, bytes);
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/// <summary>将数据写入新文件,若文件已存在则覆盖。</summary>
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public static bool WriteFile(string path, bool bom, params byte[] bytes)
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{
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if (string.IsNullOrEmpty(path)) return false;
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if (bom)
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{
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lock (Locker)
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{
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if (bytes == null || bytes.Length < 1)
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{
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try
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{
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File.WriteAllBytes(path, TextUtility.Bom);
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return true;
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}
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catch
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{
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return false;
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}
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}
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else
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{
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var file = OpenFile(path, true);
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var success = false;
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try
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{
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var write1 = BytesUtility.Write(file, TextUtility.Bom);
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if (write1 == TextUtility.Bom.Length)
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{
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var write2 = BytesUtility.Write(file, bytes);
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if (bytes != null && bytes.LongLength > 0L)
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{
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}
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success = true;
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}
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}
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catch { }
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RuntimeUtility.Dispose(file);
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return success;
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}
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}
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}
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else
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{
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lock (Locker)
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{
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try
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{
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File.WriteAllBytes(path, bytes);
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return true;
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}
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catch
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{
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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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/// <summary>读取文件,获取文件内容。当文件为 UTF-8 文本文件时,可去除 BOM 头。</summary>
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/// <remarks>注:<br />字节数组最大为 2GB;<br />此方法不抛出异常,读取失时返回空字节数组。</remarks>
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public static byte[] ReadFile(string path, bool wipeBom = false)
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{
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const int Buffer = 1048576;
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if (!FileExists(path)) return Constant.EmptyBytes;
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lock (Locker)
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{
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try
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{
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var result = new byte[0];
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using (var stream = new FileStream(path, FileMode.Open, FileAccess.Read, FileShare.Read))
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{
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if (!stream.CanRead) return result;
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stream.Position = 0;
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var length = stream.Length;
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if (length < 1) return result;
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if (length > int.MaxValue) return result;
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var offset = 0L;
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if (wipeBom && length >= 3)
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{
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var head = new byte[3];
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stream.Read(head, 0, 3);
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if (TextUtility.ContainsBOM(head))
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{
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var capacity = length - 3;
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result = new byte[capacity];
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}
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else
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{
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result = new byte[length];
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result[0] = head[0];
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result[1] = head[1];
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result[2] = head[2];
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offset = 3;
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}
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}
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else
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{
|
|
result = new byte[length];
|
|
}
|
|
|
|
var block = new byte[Buffer];
|
|
while (true)
|
|
{
|
|
var read = stream.Read(block, 0, Buffer);
|
|
if (read < 1) break;
|
|
|
|
Array.Copy(block, 0, result, offset, read);
|
|
offset += read;
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
catch { }
|
|
}
|
|
return Constant.EmptyBytes;
|
|
}
|
|
|
|
/// <summary>获取指定文件的字节数,获取失败时返回 -1 值。</summary>
|
|
public static long GetFileLength(string path)
|
|
{
|
|
try
|
|
{
|
|
var info = new FileInfo(path);
|
|
return info.Length;
|
|
}
|
|
catch { }
|
|
return -1;
|
|
}
|
|
|
|
#endregion
|
|
|
|
/// <summary>获取文件的最后写入时间。</summary>
|
|
public static DateTime GetFileLastWriteTime(string path, bool utc = false)
|
|
{
|
|
try
|
|
{
|
|
var info = new FileInfo(path);
|
|
return utc ? info.LastWriteTimeUtc : info.LastWriteTime;
|
|
}
|
|
catch { }
|
|
return new DateTime();
|
|
}
|
|
|
|
/// <summary>设置文件的最后写入时间。</summary>
|
|
public static string SetFileLastWriteTime(string path, DateTime value)
|
|
{
|
|
try
|
|
{
|
|
var info = new FileInfo(path);
|
|
info.LastWriteTime = value;
|
|
return null;
|
|
}
|
|
catch (Exception ex)
|
|
{
|
|
return ex.Message;
|
|
}
|
|
}
|
|
|
|
/// <summary>压缩文件到流。</summary>
|
|
/// <param name="files">Key 为 ZIP 内的文件名,Value 为原始文件路径。</param>
|
|
/// <param name="output">要输出的 ZIP 流。</param>
|
|
public static Exception ToZip(Dictionary<string, string> files, Stream output)
|
|
{
|
|
if (files == null) return new ArgumentNullException(nameof(files));
|
|
|
|
var streams = new List<Stream>();
|
|
var ex = BytesUtility.ToZip(files.Keys, output, (name) =>
|
|
{
|
|
if (name.IsEmpty()) return null;
|
|
|
|
var path = files[name];
|
|
if (path.IsEmpty()) return null;
|
|
if (!FileExists(path)) return null;
|
|
|
|
var input = OpenFile(path);
|
|
streams.Add(input);
|
|
return input;
|
|
}, (name) => GetFileLastWriteTime(files[name]), true);
|
|
RuntimeUtility.Dispose(streams);
|
|
return ex;
|
|
}
|
|
|
|
/// <summary>压缩文件到流。</summary>
|
|
/// <param name="files">Key 为 ZIP 内的文件名,Value 为原始文件路径。</param>
|
|
/// <param name="output">要输出的 ZIP 文件路径,已存在的文件将被删除。</param>
|
|
public static Exception ToZip(Dictionary<string, string> files, string output)
|
|
{
|
|
if (output.IsEmpty()) return new ArgumentException(nameof(output));
|
|
if (FileExists(output)) DeleteFile(output);
|
|
if (FileExists(output)) return new IOException();
|
|
var stream = OpenFile(output);
|
|
if (stream == null) return new IOException();
|
|
var ex = ToZip(files, stream);
|
|
RuntimeUtility.Dispose(stream, true);
|
|
return ex;
|
|
}
|
|
|
|
/// <summary>压缩文件到流。</summary>
|
|
/// <param name="directory">原始文件目录。</param>
|
|
/// <param name="output">要输出的 ZIP 流。</param>
|
|
public static Exception ToZip(string directory, Stream output)
|
|
{
|
|
if (!DirectoryExists(directory)) return new DirectoryNotFoundException();
|
|
|
|
var dict = new Dictionary<string, string>();
|
|
foreach (var path in GetSubFiles(directory, true))
|
|
{
|
|
var name = path.Substring(directory.Length);
|
|
if (name.StartsWith("\\")) name = name.Substring(1);
|
|
if (name.StartsWith("/")) name = name.Substring(1);
|
|
dict.Add(name, path);
|
|
}
|
|
|
|
return ToZip(dict, output);
|
|
}
|
|
|
|
/// <summary>压缩文件到流。</summary>
|
|
/// <param name="directory">原始文件目录。</param>
|
|
/// <param name="output">要输出的 ZIP 文件路径,已存在的旧文件将被删除。</param>
|
|
public static Exception ToZip(string directory, string output)
|
|
{
|
|
if (output.IsEmpty()) return new ArgumentException(nameof(output));
|
|
if (FileExists(output)) DeleteFile(output);
|
|
if (FileExists(output)) return new IOException("无法删除现有文件。");
|
|
var stream = OpenFile(output);
|
|
if (stream == null) return new IOException("无法创建文件。");
|
|
var ex = ToZip(directory, stream);
|
|
RuntimeUtility.Dispose(stream, true);
|
|
return ex;
|
|
}
|
|
|
|
/// <summary>解压 ZIP 文件到目标目录。已存在的旧文件将被删除。</summary>
|
|
public static Exception FromZip(string zipPath, string outputDirectory = null)
|
|
{
|
|
if (!FileExists(zipPath)) return new FileNotFoundException("指定的 ZIP 文件路径无效。");
|
|
|
|
var directory = outputDirectory;
|
|
if (directory.IsEmpty())
|
|
{
|
|
if (zipPath.Lower().EndsWith(".zip"))
|
|
{
|
|
directory = zipPath.Substring(0, zipPath.Length - 4);
|
|
//if (directory.EndsWith("/") || directory.EndsWith("\\"))
|
|
//if (PathExists(directory)) directory = null;
|
|
}
|
|
else
|
|
{
|
|
directory = GetParentPath(zipPath);
|
|
}
|
|
}
|
|
if (directory.IsEmpty()) return new ArgumentException("无法判断目录路径。");
|
|
if (!AssureDirectory(directory)) return new DirectoryNotFoundException("无法创建目录。");
|
|
|
|
var input = OpenFile(zipPath);
|
|
if (input == null) return new IOException("无法打开 ZIP 文件。");
|
|
var info = new Dictionary<string, DateTime>();
|
|
var ex = BytesUtility.FromZip(input, (name, size, modifield) =>
|
|
{
|
|
var path = Path.Combine(directory, name);
|
|
if (FileExists(path)) DeleteFile(path);
|
|
if (DirectoryExists(path)) DeleteDirectory(path, true);
|
|
if (PathExists(path)) throw new IOException("无法删除旧文件或旧目录。");
|
|
|
|
var output = OpenFile(path);
|
|
if (output == null) throw new IOException("无法创建文件 " + path + "。");
|
|
if (info.ContainsKey(path))
|
|
{
|
|
RuntimeUtility.Dispose(output);
|
|
return null;
|
|
}
|
|
info.Add(path, modifield);
|
|
return output;
|
|
}, (name, modified) =>
|
|
{
|
|
var path = Path.Combine(directory, name);
|
|
var exists = AssureDirectory(path);
|
|
if (!exists) throw new IOException("无法创建 ZIP 中对应的目录。");
|
|
}, true);
|
|
|
|
// 恢复文件的修改时间。
|
|
foreach (var i in info) SetFileLastWriteTime(i.Key, i.Value);
|
|
|
|
return ex;
|
|
}
|
|
|
|
///// <summary>解压 ZIP 文件到字典。失败且不允许异常时返回 NULL 值。</summary>
|
|
//public static Dictionary<string, byte[]> FromZip(string zipPath, bool allowException = false)
|
|
//{
|
|
// if (FileExists(zipPath))
|
|
// {
|
|
// var ex = new FileNotFoundException("文件不存在。");
|
|
// if (allowException) throw ex;
|
|
// return null;
|
|
// }
|
|
|
|
// var input = OpenFile(zipPath);
|
|
// if (input == null)
|
|
// {
|
|
// var ex = new IOException("无法打开 ZIP 文件。");
|
|
// if (allowException) throw ex;
|
|
// return null;
|
|
// }
|
|
|
|
// return BinaryUtility.FromZip(input, ;
|
|
//}
|
|
|
|
/// <summary>获取指定程序集的资源。</summary>
|
|
public static Stream GetResource(string name, Assembly assembly = null)
|
|
{
|
|
try
|
|
{
|
|
if (assembly == null) assembly = Assembly.GetExecutingAssembly();
|
|
var stream = assembly.GetManifestResourceStream(name);
|
|
return stream;
|
|
}
|
|
catch { }
|
|
return null;
|
|
}
|
|
|
|
/// <summary>获取当前进程程序集的资源。读取失败时返回 NULL 值。</summary>
|
|
public static byte[] ReadResource(string name, Assembly assembly = null)
|
|
{
|
|
var stream = GetResource(name, assembly);
|
|
if (stream == null) return null;
|
|
var bytes = BytesUtility.Read(stream, true);
|
|
return bytes;
|
|
}
|
|
|
|
/// <summary>监视文件夹的变化。</summary>
|
|
public static FileSystemWatcher NewFileSystemWatcher(string directory, FileSystemEventHandler action)
|
|
{
|
|
var watcher = new FileSystemWatcher();
|
|
watcher.NotifyFilter = NotifyFilters.FileName | NotifyFilters.DirectoryName | NotifyFilters.LastWrite | NotifyFilters.Size;
|
|
watcher.IncludeSubdirectories = true;
|
|
watcher.Path = directory;
|
|
|
|
watcher.Created += (s, e) => action?.Invoke(watcher, e);
|
|
watcher.Deleted += (s, e) => action?.Invoke(watcher, e);
|
|
watcher.Changed += (s, e) => action?.Invoke(watcher, e);
|
|
watcher.Renamed += (s, e) => action?.Invoke(watcher, e);
|
|
watcher.EnableRaisingEvents = true;
|
|
|
|
return watcher;
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|