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ContentReader for Compressed (+read content for provider)

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This commit is contained in:
Ádám Kovács
2023-09-05 22:24:25 +02:00
parent e6fd8d4ab5
commit def5ece688
15 changed files with 195 additions and 57 deletions
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2
src/Tools/FileTime.Tools.VirtualDiskSources/DiscUtilsInitializer.cs
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@@ -2,7 +2,7 @@
namespace FileTime.Tools.VirtualDiskSources;
public class DiscUtilsInitializer : IPreStartupHandler
public sealed class DiscUtilsInitializer : IPreStartupHandler
{
public Task InitAsync()
{

31
src/Tools/FileTime.Tools.VirtualDiskSources/VirtualDiskContentProvider.cs
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@@ -5,43 +5,40 @@ using FileTime.Core.Timeline;
namespace FileTime.Tools.VirtualDiskSources;
public class VirtualDiskContentProvider : SubContentProviderBase, IVirtualDiskContentProvider
public sealed class VirtualDiskContentProvider : SubContentProviderBase, IVirtualDiskContentProvider
{
private readonly IContentAccessorFactory _contentAccessorFactory;
public VirtualDiskContentProvider(
IContentProvider parentContentProvider,
ITimelessContentProvider timelessContentProvider,
IContentAccessorFactory contentAccessorFactory)
: base(parentContentProvider, "virtual-disk", timelessContentProvider)
IContentAccessorFactory contentAccessorFactory,
IContentProvider parentContentProvider)
: base(
timelessContentProvider,
contentAccessorFactory,
parentContentProvider,
"virtual-disk"
)
{
_contentAccessorFactory = contentAccessorFactory;
}
public override async Task<byte[]?> GetContentAsync(IElement element, int? maxLength = null, CancellationToken cancellationToken = default)
{
var elementNativePath = element.NativePath!;
var supportedPath = await ParentContentProvider.GetSupportedPathPart(elementNativePath);
if (supportedPath is null) return null;
var parentItem = await ParentContentProvider.GetItemByNativePathAsync(supportedPath, element.PointInTime);
if (parentItem is not IElement parentElement) return null;
var contentReaderFactory = _contentAccessorFactory.GetContentReaderFactory(parentElement.Provider);
var reader = await contentReaderFactory.CreateContentReaderAsync(parentElement);
var parentElementContext = await GetParentElementReaderAsync(element);
var reader = parentElementContext.ContentReader;
var subPath = parentElementContext.SubNativePath.Path;
await using var readerStream = reader.AsStream();
using var discReader = new UdfReader(readerStream);
var subPath = elementNativePath.Path.Substring(supportedPath.Path.Length + 2 + Constants.SubContentProviderRootContainer.Length);
var fileInfo = discReader.GetFileInfo(subPath);
await using var contentReader = fileInfo.Open(FileMode.Open, FileAccess.Read);
var data = new byte[1024 * 1024];
var readAsync = await contentReader.ReadAsync(data, cancellationToken);
return data[0..readAsync].ToArray();
return data[..readAsync].ToArray();
}
public override VolumeSizeInfo? GetVolumeSizeInfo(FullName path)

4
src/Tools/FileTime.Tools.VirtualDiskSources/VirtualDiskContentProviderFactory.cs
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@@ -3,7 +3,7 @@ using FileTime.Core.Timeline;
namespace FileTime.Tools.VirtualDiskSources;
public class VirtualDiskContentProviderFactory : IVirtualDiskContentProviderFactory
public sealed class VirtualDiskContentProviderFactory : IVirtualDiskContentProviderFactory
{
private readonly ITimelessContentProvider _timelessContentProvider;
private readonly IContentAccessorFactory _contentAccessorFactory;
@@ -17,5 +17,5 @@ public class VirtualDiskContentProviderFactory : IVirtualDiskContentProviderFact
}
public IVirtualDiskContentProvider Create(IContentProvider parentContentProvider)
=> new VirtualDiskContentProvider(parentContentProvider, _timelessContentProvider, _contentAccessorFactory);
=> new VirtualDiskContentProvider(_timelessContentProvider, _contentAccessorFactory, parentContentProvider);
}

2
src/Tools/FileTime.Tools.VirtualDiskSources/VirtualDiskContentReader.cs
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@@ -2,7 +2,7 @@
namespace FileTime.Tools.VirtualDiskSources;
public class VirtualDiskContentReader : IContentReader
public sealed class VirtualDiskContentReader : IContentReader
{
private readonly Stream _stream;
private readonly ICollection<IDisposable> _disposables;

29
src/Tools/FileTime.Tools.VirtualDiskSources/VirtualDiskContentReaderFactory.cs
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@@ -4,37 +4,28 @@ using FileTime.Core.Models;
namespace FileTime.Tools.VirtualDiskSources;
public class VirtualDiskContentReaderFactory : IContentReaderFactory<VirtualDiskContentProvider>
public sealed class VirtualDiskContentReaderFactory : SubContentReaderBase<VirtualDiskContentProvider>
{
private readonly IContentAccessorFactory _contentAccessorFactory;
public VirtualDiskContentReaderFactory(IContentAccessorFactory contentAccessorFactory)
public VirtualDiskContentReaderFactory(IContentAccessorFactory contentAccessorFactory)
: base(contentAccessorFactory)
{
_contentAccessorFactory = contentAccessorFactory;
}
public async Task<IContentReader> CreateContentReaderAsync(IElement element)
public override async Task<IContentReader> CreateContentReaderAsync(IElement element)
{
if (element.Provider is not VirtualDiskContentProvider provider)
throw new ArgumentException(
"Provider must be VirtualDiskContentProvider, but it is " + element.Provider.GetType(),
$"Provider must be {nameof(VirtualDiskContentProvider)}, but it is " + element.Provider.GetType(),
nameof(element));
var elementNativePath = element.NativePath!;
var supportedPath = (await provider.ParentContentProvider.GetSupportedPathPart(elementNativePath))!;
var parentElement = (IElement) await provider.ParentContentProvider.GetItemByNativePathAsync(supportedPath, element.PointInTime);
var contentReaderFactory = _contentAccessorFactory.GetContentReaderFactory(parentElement.Provider);
var reader = await contentReaderFactory.CreateContentReaderAsync(parentElement);
var parentElementReaderContext = await GetParentElementReaderAsync(element, provider);
var reader = parentElementReaderContext.ContentReader;
var subPath = parentElementReaderContext.SubNativePath;
var readerStream = reader.AsStream();
var discReader = new UdfReader(readerStream);
var subPath = elementNativePath.Path.Substring(supportedPath.Path.Length + 2 + Constants.SubContentProviderRootContainer.Length);
var fileInfo = discReader.GetFileInfo(subPath);
var fileInfo = discReader.GetFileInfo(subPath.Path);
var contentReader = fileInfo.Open(FileMode.Open, FileAccess.Read);

2
src/Tools/FileTime.Tools.VirtualDiskSources/VirtualDiskSubContentProvider.cs
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@@ -8,7 +8,7 @@ using FileTime.Core.Timeline;
namespace FileTime.Tools.VirtualDiskSources;
public class VirtualDiskSubContentProvider : IVirtualDiskSubContentProvider
public sealed class VirtualDiskSubContentProvider : IVirtualDiskSubContentProvider
{
private readonly IContentAccessorFactory _contentAccessorFactory;
private readonly ITimelessContentProvider _timelessContentProvider;