duplicati/Duplicati/Library/Common/IO/ISystemIO.cs

// Copyright (C) 2025, The Duplicati Team
// https://duplicati.com, hello@duplicati.com
// 
// Permission is hereby granted, free of charge, to any person obtaining a 
// copy of this software and associated documentation files (the "Software"), 
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// and/or sell copies of the Software, and to permit persons to whom the 
// Software is furnished to do so, subject to the following conditions:
// 
// The above copyright notice and this permission notice shall be included in 
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// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 
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using System;
using System.IO;
using System.Collections.Generic;
using Duplicati.Library.Interface;

namespace Duplicati.Library.Common.IO
{
    /// <summary>
    /// Interface for wrapping System.IO operations.
    /// </summary>
    public interface ISystemIO
    {
        IFileEntry DirectoryEntry(string path);
        IFileEntry DirectoryEntry(DirectoryInfo dirInfo);
        void DirectoryCreate(string path);
        void DirectoryDelete(string path, bool recursive);
        bool DirectoryExists(string path);
        void DirectoryMove(string sourceDirName, string destDirName);
        void DirectorySetLastWriteTimeUtc(string path, DateTime time);
        void DirectorySetCreationTimeUtc(string path, DateTime time);

        IFileEntry FileEntry(string path);
        IFileEntry FileEntry(FileInfo fileInfo);
        void FileMove(string source, string target);
        void FileDelete(string path);
        void FileCopy(string source, string target, bool overwrite);
        void FileSetLastWriteTimeUtc(string path, DateTime time);
        void FileSetCreationTimeUtc(string path, DateTime time);
        DateTime FileGetLastWriteTimeUtc(string path);
        DateTime FileGetCreationTimeUtc(string path);
        bool FileExists(string path);
        long FileLength(string path);
        FileStream FileOpenRead(string path);
        FileStream FileOpenReadWrite(string path);
        FileStream FileOpenWrite(string path);
        FileStream FileCreate(string path);
        FileAttributes GetFileAttributes(string path);
        void SetFileAttributes(string path, FileAttributes attributes);
        void CreateSymlink(string symlinkfile, string target, bool asDir);
        string GetSymlinkTarget(string path);
        string PathGetDirectoryName(string path);
        string PathGetFileName(string path);
        string PathGetExtension(string path);
        string PathChangeExtension(string path, string extension);
        string PathCombine(params string[] paths);
        string PathGetFullPath(string path);
        string GetPathRoot(string path);
        string[] GetDirectories(string path);
        string[] GetFiles(string path);
        string[] GetFiles(string path, string searchPattern);
        DateTime GetCreationTimeUtc(string path);
        DateTime GetLastWriteTimeUtc(string path);
        IEnumerable<string> EnumerateFileSystemEntries(string path);
        IEnumerable<string> EnumerateFiles(string path);
        IEnumerable<string> EnumerateFiles(string path, string searchPattern, SearchOption searchOption);
        IEnumerable<string> EnumerateDirectories(string path);

        // Enumerate FileEntries of files and directories
        // This is more efficient than enumerating file names when metadata is needed
        IEnumerable<IFileEntry> EnumerateFileEntries(string path);

        void SetMetadata(string path, Dictionary<string, string> metdata, bool restorePermissions);
        Dictionary<string, string> GetMetadata(string path, bool isSymlink, bool followSymlink);
        /// <summary>
        /// Sets the permission to read-write only for the current user.
        /// </summary>
        /// <param name="path">The file to set permissions on.</param>
        void FileSetPermissionUserRWOnly(string path);
        /// <summary>
        /// Sets the permission to read-write only for the current user.
        /// </summary>
        /// <param name="path">The directory to set permissions on.</param>
        void DirectorySetPermissionUserRWOnly(string path);
    }

}