139 lines
4.7 KiB
C#
139 lines
4.7 KiB
C#
// Copyright (C) 2025, The Duplicati Team
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// https://duplicati.com, hello@duplicati.com
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the "Software"),
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// to deal in the Software without restriction, including without limitation
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// the rights to use, copy, modify, merge, publish, distribute, sublicense,
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// and/or sell copies of the Software, and to permit persons to whom the
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// Software is furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS IN THE SOFTWARE.
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#nullable enable
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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.Linq;
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using System.Threading;
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using System.Threading.Tasks;
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using Duplicati.Library.Interface;
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namespace Duplicati.Library.Snapshots;
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/// <summary>
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/// A snapshot-based source file entry
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/// </summary>
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/// <param name="service">The snapshot service</param>
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/// <param name="path">The path of the file</param>
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/// <param name="isFolder">True if the entry is a folder, false otherwise</param>
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/// <param name="isRoot">True if the entry is the root entry, false otherwise</param>
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public class SnapshotSourceFileEntry(ISnapshotService service, string path, bool isFolder, bool isRoot) : ISourceProviderEntry
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{
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/// <summary>
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/// The symlink target
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/// </summary>
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private string? symlinkTarget;
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/// <summary>
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/// The file attributes
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/// </summary>
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private FileAttributes? attributes;
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/// <summary>
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/// Gets the symlink target or null if the entry is not a symlink
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/// </summary>
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public string? SymlinkTarget
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{
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get
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{
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if (symlinkTarget != null)
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return symlinkTarget;
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if (!service.IsSymlink(path, Attributes))
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return null;
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return symlinkTarget = service.GetSymlinkTarget(path);
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}
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}
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/// <summary>
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/// True if the entry is a symlink, false otherwise
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/// </summary>
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public bool IsSymlink => SymlinkTarget != null;
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/// <summary>
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/// Gets the entry attributes
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/// </summary>
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public FileAttributes Attributes
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{
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get
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{
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if (attributes != null)
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return attributes.Value;
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attributes = service.GetAttributes(path);
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return attributes.Value;
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}
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}
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/// <summary>
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/// Gets a value indicating if the entry is a block device
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/// </summary>
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public bool IsBlockDevice => service.IsBlockDevice(path);
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/// <summary>
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/// Gets a value indicating if the entry is a character device
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/// </summary>
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public bool IsCharacterDevice => false;
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/// <summary>
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/// Gets a value indicating if the entry is an alternate stream
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/// </summary>
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public bool IsAlternateStream => false;
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/// <summary>
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/// Gets the hardlink target ID, or null if the entry is not a hardlink
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/// </summary>
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public string? HardlinkTargetId => service.HardlinkTargetID(path);
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/// <inheritdoc/>
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public bool IsFolder => isFolder;
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/// <inheritdoc/>
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public bool IsMetaEntry => false;
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/// <inheritdoc/>
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public bool IsRootEntry => isRoot;
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/// <inheritdoc/>
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public DateTime CreatedUtc => service.GetCreationTimeUtc(path);
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/// <inheritdoc/>
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public DateTime LastModificationUtc => service.GetLastWriteTimeUtc(path);
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/// <inheritdoc/>
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public string Path => path;
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/// <inheritdoc/>
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public long Size => IsFolder ? -1 : service.GetFileSize(path);
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/// <inheritdoc/>
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public Task<Stream> OpenRead(CancellationToken cancellationToken) => service.OpenReadAsync(path, cancellationToken);
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/// <inheritdoc/>
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public Task<Dictionary<string, string?>> GetMinorMetadata(CancellationToken cancellationToken) => Task.FromResult(service.GetMetadata(path, IsSymlink));
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/// <inheritdoc/>
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public IAsyncEnumerable<ISourceProviderEntry> Enumerate(CancellationToken cancellationToken) => service.EnumerateFilesystemEntries(this).ToAsyncEnumerable();
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/// <inheritdoc/>
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public Task<bool> FileExists(string filename, CancellationToken cancellationToken) => Task.FromResult(service.FileExists(System.IO.Path.Combine(path, filename)));
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} |