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Copy pathFakeFile.cs
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280 lines (247 loc) · 8.72 KB
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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
using System;
using System.IO;
using Cake.Core.IO;
using Path = Cake.Core.IO.Path;
namespace Cake.Testing
{
/// <summary>
/// Represents a fake file.
/// </summary>
public sealed class FakeFile : IFile
{
private readonly FakeFileSystemTree _tree;
/// <inheritdoc/>
public FilePath Path { get; }
/// <inheritdoc/>
Path IFileSystemInfo.Path => Path;
/// <inheritdoc/>
public bool Exists { get; internal set; }
/// <inheritdoc/>
public bool Hidden { get; internal set; }
/// <summary>
/// Gets the time when this <see cref="IFileSystemInfo"/> was last written to.
/// </summary>
/// <value>The last write time.</value>
public DateTime LastWriteTime { get; private set; }
/// <summary>
/// Gets the date and time, in Coordinated Universal Time (UTC), that the file was last written to.
/// </summary>
/// <value>
/// A <see cref="DateTime"/> value that represents the last write time in UTC, or <c>null</c> if not available.
/// </value>
public DateTime? LastWriteTimeUtc { get; private set; }
/// <summary>
/// Gets the date and time, in Coordinated Universal Time (UTC), that the file was created.
/// </summary>
/// <value>
/// A <see cref="DateTime"/> value that represents the creation time in UTC, or <c>null</c> if not available.
/// </value>
public DateTime? CreationTimeUtc { get; private set; }
/// <summary>
/// Gets the date and time, in Coordinated Universal Time (UTC), that the file was last accessed.
/// </summary>
/// <value>
/// A <see cref="DateTime"/> value that represents the last access time in UTC, or <c>null</c> if not available.
/// </value>
public DateTime? LastAccessTimeUtc { get; private set; }
/// <summary>
/// Gets the Unix file mode of the entry.
/// </summary>
/// <value>
/// A <see cref="UnixFileMode"/> value that represents the Unix file mode of the entry.
/// </value>
public UnixFileMode? UnixFileMode { get; private set; }
/// <inheritdoc/>
public long Length { get; private set; }
/// <inheritdoc/>
public FileAttributes Attributes { get; set; }
internal object ContentLock { get; } = new object();
/// <summary>
/// Gets the length of the content.
/// </summary>
/// <value>
/// The length of the content.
/// </value>
public long ContentLength
{
get { return Length; }
internal set { Length = value; }
}
/// <summary>
/// Gets the content.
/// </summary>
/// <value>The content.</value>
public byte[] Content { get; internal set; }
internal FakeFile(FakeFileSystemTree tree, FilePath path)
{
_tree = tree;
Path = path;
Reset();
}
/// <inheritdoc/>
public void Copy(FilePath destination, bool overwrite)
{
_tree.CopyFile(this, destination, overwrite);
}
/// <inheritdoc/>
public void Move(FilePath destination)
{
_tree.MoveFile(this, destination);
}
/// <inheritdoc/>
public Stream Open(FileMode fileMode, FileAccess fileAccess, FileShare fileShare)
{
var position = GetPosition(fileMode, out bool fileWasCreated);
if (fileWasCreated)
{
_tree.CreateFile(this);
}
return new FakeFileStream(this) { Position = position };
}
/// <inheritdoc/>
public void Delete()
{
_tree.DeleteFile(this);
}
/// <summary>
/// Resizes the file.
/// </summary>
/// <param name="offset">The offset.</param>
public void Resize(long offset)
{
if (Length < offset)
{
Length = offset;
}
if (Content.Length >= Length)
{
return;
}
var buffer = new byte[Length * 2];
Buffer.BlockCopy(Content, 0, buffer, 0, Content.Length);
Content = buffer;
}
private long GetPosition(FileMode fileMode, out bool fileWasCreated)
{
fileWasCreated = false;
if (Exists)
{
switch (fileMode)
{
case FileMode.CreateNew:
throw new IOException();
case FileMode.Create:
case FileMode.Truncate:
Length = 0;
return 0;
case FileMode.Open:
case FileMode.OpenOrCreate:
return 0;
case FileMode.Append:
return Length;
}
}
else
{
switch (fileMode)
{
case FileMode.Create:
case FileMode.Append:
case FileMode.CreateNew:
case FileMode.OpenOrCreate:
fileWasCreated = true;
Exists = true;
var now = _tree.GetUtcNow();
SetLastWriteTimeUtc(now);
SetLastAccessTimeUtc(now);
SetCreationTimeUtc(now);
UnixFileMode = _tree.DefaultUnixCreateFileMode;
return Length;
case FileMode.Open:
case FileMode.Truncate:
throw FakeFileSystemTree.ThrowIfNotFound(this);
}
}
throw new NotSupportedException();
}
/// <inheritdoc/>
public IFile SetCreationTime(DateTime creationTime)
{
FakeFileSystemTree.ThrowIfNotFound(this);
CreationTimeUtc = creationTime.ToUniversalTime();
return this;
}
/// <inheritdoc/>
public IFile SetCreationTimeUtc(DateTime creationTimeUtc)
{
FakeFileSystemTree.ThrowIfNotFound(this);
CreationTimeUtc = creationTimeUtc;
return this;
}
/// <inheritdoc/>
public IFile SetLastAccessTime(DateTime lastAccessTime)
{
FakeFileSystemTree.ThrowIfNotFound(this);
LastAccessTimeUtc = lastAccessTime.ToUniversalTime();
return this;
}
/// <inheritdoc/>
public IFile SetLastAccessTimeUtc(DateTime lastAccessTimeUtc)
{
FakeFileSystemTree.ThrowIfNotFound(this);
LastAccessTimeUtc = lastAccessTimeUtc;
return this;
}
/// <inheritdoc/>
public IFile SetLastWriteTime(DateTime lastWriteTime)
{
FakeFileSystemTree.ThrowIfNotFound(this);
LastWriteTime = lastWriteTime;
LastWriteTimeUtc = lastWriteTime.ToUniversalTime();
return this;
}
/// <inheritdoc/>
public IFile SetLastWriteTimeUtc(DateTime lastWriteTimeUtc)
{
FakeFileSystemTree.ThrowIfNotFound(this);
LastWriteTimeUtc = lastWriteTimeUtc;
LastWriteTime = lastWriteTimeUtc.ToLocalTime();
return this;
}
/// <inheritdoc/>
public IFile SetUnixFileMode(UnixFileMode unixFileMode)
{
if (!_tree.IsUnix)
{
throw new PlatformNotSupportedException("Setting Unix file mode is not supported on Windows platforms.");
}
FakeFileSystemTree.ThrowIfNotFound(this);
UnixFileMode = unixFileMode;
return this;
}
/// <summary>
/// Sets the last write time of the file to the current UTC time.
/// </summary>
/// <returns>The current <see cref="IFile"/> instance.</returns>
public IFile SetLastWriteNow()
{
return SetLastWriteTimeUtc(_tree.GetUtcNow());
}
internal void Reset()
{
Exists = false;
Hidden = false;
LastWriteTime = default;
CreationTimeUtc = null;
LastAccessTimeUtc = null;
LastWriteTimeUtc = null;
UnixFileMode = null;
ContentLength = 0;
Attributes = default;
Content = new byte[4096];
}
}
}
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