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Code Issues 975 Packages Projects Releases 20 Wiki Activity

async loading for rar is better

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This commit is contained in:
Adam Hathcock
2026-01-03 14:49:30 +00:00
parent 6ef1dd590f
commit 39d986a62c
21 changed files with 541 additions and 134 deletions
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4
src/SharpCompress/Archives/Rar/RarArchive.cs
View File

@@ -280,7 +280,9 @@ public class RarArchive : AbstractArchive<RarArchiveEntry, RarVolume>
{
try
{
await MarkHeader.ReadAsync(stream, true, false, cancellationToken).ConfigureAwait(false);
await MarkHeader
.ReadAsync(stream, true, false, cancellationToken)
.ConfigureAwait(false);
return true;
}
catch

25
src/SharpCompress/Archives/SevenZip/SevenZipArchive.cs
View File

@@ -305,6 +305,31 @@ public class SevenZipArchive : AbstractArchive<SevenZipArchiveEntry, SevenZipVol
}
}
protected override async IAsyncEnumerable<SevenZipEntry> GetEntriesAsync(
Stream stream,
[System.Runtime.CompilerServices.EnumeratorCancellation]
CancellationToken cancellationToken = default
)
{
var entries = _archive.Entries.ToList();
stream.Position = 0;
foreach (var dir in entries.Where(x => x.IsDirectory))
{
cancellationToken.ThrowIfCancellationRequested();
_currentEntry = dir;
yield return dir;
}
// For non-directory entries, yield them without creating shared streams
// Each call to GetEntryStream() will create a fresh decompression stream
// to avoid state corruption issues with async operations
foreach (var entry in entries.Where(x => !x.IsDirectory))
{
cancellationToken.ThrowIfCancellationRequested();
_currentEntry = entry;
yield return entry;
}
}
protected override EntryStream GetEntryStream()
{
// Create a fresh decompression stream for each file (no state sharing).

4
src/SharpCompress/Common/Rar/Headers/MarkHeader.cs
View File

@@ -138,7 +138,9 @@ internal class MarkHeader : IRarHeader
)
{
var buffer = new byte[1];
var bytesRead = await stream.ReadAsync(buffer, 0, 1, cancellationToken).ConfigureAwait(false);
var bytesRead = await stream
.ReadAsync(buffer, 0, 1, cancellationToken)
.ConfigureAwait(false);
if (bytesRead == 1)
{
return buffer[0];

29
src/SharpCompress/Common/Rar/Headers/RarHeader.cs
View File

@@ -37,7 +37,8 @@ internal class RarHeader : IRarHeader
{
try
{
return await CreateAsync(reader, isRar5, archiveEncoding, cancellationToken).ConfigureAwait(false);
return await CreateAsync(reader, isRar5, archiveEncoding, cancellationToken)
.ConfigureAwait(false);
}
catch (InvalidFormatException)
{
@@ -53,7 +54,9 @@ internal class RarHeader : IRarHeader
)
{
var header = new RarHeader();
await header.InitializeAsync(reader, isRar5, archiveEncoding, cancellationToken).ConfigureAwait(false);
await header
.InitializeAsync(reader, isRar5, archiveEncoding, cancellationToken)
.ConfigureAwait(false);
return header;
}
@@ -77,18 +80,26 @@ internal class RarHeader : IRarHeader
{
HeaderCrc = await reader.ReadUInt32Async(cancellationToken).ConfigureAwait(false);
reader.ResetCrc();
HeaderSize = (int)await reader.ReadRarVIntUInt32Async(3, cancellationToken).ConfigureAwait(false);
HeaderSize = (int)
await reader.ReadRarVIntUInt32Async(3, cancellationToken).ConfigureAwait(false);
reader.Mark();
HeaderCode = await reader.ReadRarVIntByteAsync(2, cancellationToken).ConfigureAwait(false);
HeaderFlags = await reader.ReadRarVIntUInt16Async(2, cancellationToken).ConfigureAwait(false);
HeaderCode = await reader
.ReadRarVIntByteAsync(2, cancellationToken)
.ConfigureAwait(false);
HeaderFlags = await reader
.ReadRarVIntUInt16Async(2, cancellationToken)
.ConfigureAwait(false);
if (HasHeaderFlag(HeaderFlagsV5.HAS_EXTRA))
{
ExtraSize = await reader.ReadRarVIntUInt32Async(5, cancellationToken).ConfigureAwait(false);
ExtraSize = await reader
.ReadRarVIntUInt32Async(5, cancellationToken)
.ConfigureAwait(false);
}
if (HasHeaderFlag(HeaderFlagsV5.HAS_DATA))
{
AdditionalDataSize = (long)await reader.ReadRarVIntAsync(10, cancellationToken).ConfigureAwait(false);
AdditionalDataSize = (long)
await reader.ReadRarVIntAsync(10, cancellationToken).ConfigureAwait(false);
}
}
else
@@ -101,7 +112,9 @@ internal class RarHeader : IRarHeader
HeaderSize = await reader.ReadInt16Async(cancellationToken).ConfigureAwait(false);
if (HasHeaderFlag(HeaderFlagsV4.HAS_DATA))
{
AdditionalDataSize = await reader.ReadUInt32Async(cancellationToken).ConfigureAwait(false);
AdditionalDataSize = await reader
.ReadUInt32Async(cancellationToken)
.ConfigureAwait(false);
}
}
}

17
src/SharpCompress/Common/Rar/Headers/RarHeaderFactory.cs
View File

@@ -44,7 +44,8 @@ public class RarHeaderFactory
public async IAsyncEnumerable<IRarHeader> ReadHeadersAsync(
Stream stream,
[System.Runtime.CompilerServices.EnumeratorCancellation] CancellationToken cancellationToken = default
[System.Runtime.CompilerServices.EnumeratorCancellation]
CancellationToken cancellationToken = default
)
{
var markHeader = await MarkHeader
@@ -54,7 +55,10 @@ public class RarHeaderFactory
yield return markHeader;
RarHeader? header;
while ((header = await TryReadNextHeaderAsync(stream, cancellationToken).ConfigureAwait(false)) != null)
while (
(header = await TryReadNextHeaderAsync(stream, cancellationToken).ConfigureAwait(false))
!= null
)
{
yield return header;
if (header.HeaderType == HeaderType.EndArchive)
@@ -224,7 +228,10 @@ public class RarHeaderFactory
}
}
private async Task<RarHeader?> TryReadNextHeaderAsync(Stream stream, CancellationToken cancellationToken = default)
private async Task<RarHeader?> TryReadNextHeaderAsync(
Stream stream,
CancellationToken cancellationToken = default
)
{
RarCrcBinaryReader reader;
if (!IsEncrypted)
@@ -254,7 +261,9 @@ public class RarHeaderFactory
}
}
var header = await RarHeader.TryReadBaseAsync(reader, _isRar5, Options.ArchiveEncoding, cancellationToken).ConfigureAwait(false);
var header = await RarHeader
.TryReadBaseAsync(reader, _isRar5, Options.ArchiveEncoding, cancellationToken)
.ConfigureAwait(false);
if (header is null)
{
return null;

11
src/SharpCompress/Common/Rar/RarCrcBinaryReader.cs
View File

@@ -43,13 +43,18 @@ internal class RarCrcBinaryReader : MarkingBinaryReader
return b;
}
public override async Task<byte[]> ReadBytesAsync(int count, CancellationToken cancellationToken = default)
public override async Task<byte[]> ReadBytesAsync(
int count,
CancellationToken cancellationToken = default
)
{
var result = await base.ReadBytesAsync(count, cancellationToken).ConfigureAwait(false);
_currentCrc = RarCRC.CheckCrc(_currentCrc, result, 0, result.Length);
return result;
}
public async Task<byte[]> ReadBytesNoCrcAsync(int count, CancellationToken cancellationToken = default) =>
await base.ReadBytesAsync(count, cancellationToken).ConfigureAwait(false);
public async Task<byte[]> ReadBytesNoCrcAsync(
int count,
CancellationToken cancellationToken = default
) => await base.ReadBytesAsync(count, cancellationToken).ConfigureAwait(false);
}

14
src/SharpCompress/Common/Rar/RarCryptoBinaryReader.cs
View File

@@ -88,10 +88,15 @@ internal sealed class RarCryptoBinaryReader : RarCrcBinaryReader
public override async Task<byte> ReadByteAsync(CancellationToken cancellationToken = default) =>
(await ReadAndDecryptBytesAsync(1, cancellationToken).ConfigureAwait(false))[0];
public override async Task<byte[]> ReadBytesAsync(int count, CancellationToken cancellationToken = default) =>
await ReadAndDecryptBytesAsync(count, cancellationToken).ConfigureAwait(false);
public override async Task<byte[]> ReadBytesAsync(
int count,
CancellationToken cancellationToken = default
) => await ReadAndDecryptBytesAsync(count, cancellationToken).ConfigureAwait(false);
private async Task<byte[]> ReadAndDecryptBytesAsync(int count, CancellationToken cancellationToken)
private async Task<byte[]> ReadAndDecryptBytesAsync(
int count,
CancellationToken cancellationToken
)
{
var queueSize = _data.Count;
var sizeToRead = count - queueSize;
@@ -101,7 +106,8 @@ internal sealed class RarCryptoBinaryReader : RarCrcBinaryReader
var alignedSize = sizeToRead + ((~sizeToRead + 1) & 0xf);
for (var i = 0; i < alignedSize / 16; i++)
{
var cipherText = await ReadBytesNoCrcAsync(16, cancellationToken).ConfigureAwait(false);
var cipherText = await ReadBytesNoCrcAsync(16, cancellationToken)
.ConfigureAwait(false);
var readBytes = _rijndael.ProcessBlock(cipherText);
foreach (var readByte in readBytes)
{

7
src/SharpCompress/Common/Rar/RarVolume.cs
View File

@@ -82,12 +82,15 @@ public abstract class RarVolume : Volume
}
internal async IAsyncEnumerable<RarFilePart> GetVolumeFilePartsAsync(
[System.Runtime.CompilerServices.EnumeratorCancellation] CancellationToken cancellationToken = default
[System.Runtime.CompilerServices.EnumeratorCancellation]
CancellationToken cancellationToken = default
)
{
MarkHeader? lastMarkHeader = null;
await foreach (
var header in _headerFactory.ReadHeadersAsync(Stream, cancellationToken).ConfigureAwait(false)
var header in _headerFactory
.ReadHeadersAsync(Stream, cancellationToken)
.ConfigureAwait(false)
)
{
switch (header.HeaderType)

193
src/SharpCompress/Common/Zip/StreamingZipHeaderFactory.cs
View File

@@ -2,6 +2,7 @@ using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Threading;
using SharpCompress.Common.Zip.Headers;
using SharpCompress.IO;
@@ -200,4 +201,196 @@ internal class StreamingZipHeaderFactory : ZipHeaderFactory
yield return header;
}
}
internal async IAsyncEnumerable<ZipHeader> ReadStreamHeaderAsync(
Stream stream,
[System.Runtime.CompilerServices.EnumeratorCancellation]
CancellationToken cancellationToken = default
)
{
if (stream is not SharpCompressStream) //ensure the stream is already a SharpCompressStream. So the buffer/size will already be set
{
//the original code wrapped this with RewindableStream. Wrap with SharpCompressStream as we can get the buffer size
if (stream is SourceStream src)
{
stream = new SharpCompressStream(
stream,
src.ReaderOptions.LeaveStreamOpen,
bufferSize: src.ReaderOptions.BufferSize
);
}
else
{
throw new ArgumentException("Stream must be a SharpCompressStream", nameof(stream));
}
}
var rewindableStream = (SharpCompressStream)stream;
while (true)
{
cancellationToken.ThrowIfCancellationRequested();
var reader = new AsyncBinaryReader(rewindableStream, leaveOpen: true);
uint headerBytes = 0;
if (
_lastEntryHeader != null
&& FlagUtility.HasFlag(_lastEntryHeader.Flags, HeaderFlags.UsePostDataDescriptor)
)
{
if (_lastEntryHeader.Part is null)
{
continue;
}
// removed requirement for FixStreamedFileLocation()
var pos = rewindableStream.CanSeek ? (long?)rewindableStream.Position : null;
var crc = await reader.ReadUInt32Async().ConfigureAwait(false);
if (crc == POST_DATA_DESCRIPTOR)
{
crc = await reader.ReadUInt32Async().ConfigureAwait(false);
}
_lastEntryHeader.Crc = crc;
//attempt 32bit read
ulong compSize = await reader.ReadUInt32Async().ConfigureAwait(false);
ulong uncompSize = await reader.ReadUInt32Async().ConfigureAwait(false);
headerBytes = await reader.ReadUInt32Async().ConfigureAwait(false);
//check for zip64 sentinel or unexpected header
bool isSentinel = compSize == 0xFFFFFFFF || uncompSize == 0xFFFFFFFF;
bool isHeader = headerBytes == 0x04034b50 || headerBytes == 0x02014b50;
if (!isHeader && !isSentinel)
{
//reshuffle into 64-bit values
compSize = (uncompSize << 32) | compSize;
uncompSize =
((ulong)headerBytes << 32)
| await reader.ReadUInt32Async().ConfigureAwait(false);
headerBytes = await reader.ReadUInt32Async().ConfigureAwait(false);
}
else if (isSentinel)
{
//standards-compliant zip64 descriptor
compSize = await reader.ReadUInt64Async().ConfigureAwait(false);
uncompSize = await reader.ReadUInt64Async().ConfigureAwait(false);
}
_lastEntryHeader.CompressedSize = (long)compSize;
_lastEntryHeader.UncompressedSize = (long)uncompSize;
if (pos.HasValue)
{
_lastEntryHeader.DataStartPosition = pos - _lastEntryHeader.CompressedSize;
}
}
else if (_lastEntryHeader != null && _lastEntryHeader.IsZip64)
{
if (_lastEntryHeader.Part is null)
continue;
//reader = ((StreamingZipFilePart)_lastEntryHeader.Part).FixStreamedFileLocation(
// ref rewindableStream
//);
var pos = rewindableStream.CanSeek ? (long?)rewindableStream.Position : null;
headerBytes = await reader.ReadUInt32Async().ConfigureAwait(false);
var version = await reader.ReadUInt16Async().ConfigureAwait(false);
var flags = (HeaderFlags)await reader.ReadUInt16Async().ConfigureAwait(false);
var compressionMethod = (ZipCompressionMethod)
await reader.ReadUInt16Async().ConfigureAwait(false);
var lastModifiedDate = await reader.ReadUInt16Async().ConfigureAwait(false);
var lastModifiedTime = await reader.ReadUInt16Async().ConfigureAwait(false);
var crc = await reader.ReadUInt32Async().ConfigureAwait(false);
if (crc == POST_DATA_DESCRIPTOR)
{
crc = await reader.ReadUInt32Async().ConfigureAwait(false);
}
_lastEntryHeader.Crc = crc;
// The DataDescriptor can be either 64bit or 32bit
var compressed_size = await reader.ReadUInt32Async().ConfigureAwait(false);
var uncompressed_size = await reader.ReadUInt32Async().ConfigureAwait(false);
// Check if we have header or 64bit DataDescriptor
var test_header = !(headerBytes == 0x04034b50 || headerBytes == 0x02014b50);
var test_64bit = ((long)uncompressed_size << 32) | compressed_size;
if (test_64bit == _lastEntryHeader.CompressedSize && test_header)
{
_lastEntryHeader.UncompressedSize =
((long)await reader.ReadUInt32Async().ConfigureAwait(false) << 32)
| headerBytes;
headerBytes = await reader.ReadUInt32Async().ConfigureAwait(false);
}
else
{
_lastEntryHeader.UncompressedSize = uncompressed_size;
}
if (pos.HasValue)
{
_lastEntryHeader.DataStartPosition = pos - _lastEntryHeader.CompressedSize;
// 4 = First 4 bytes of the entry header (i.e. 50 4B 03 04)
rewindableStream.Position = pos.Value + 4;
}
}
else
{
headerBytes = await reader.ReadUInt32Async().ConfigureAwait(false);
}
_lastEntryHeader = null;
var header = await ReadHeader(headerBytes, reader).ConfigureAwait(false);
if (header is null)
{
yield break;
}
//entry could be zero bytes so we need to know that.
if (header.ZipHeaderType == ZipHeaderType.LocalEntry)
{
var local_header = ((LocalEntryHeader)header);
var dir_header = _entries?.FirstOrDefault(entry =>
entry.Key == local_header.Name
&& local_header.CompressedSize == 0
&& local_header.UncompressedSize == 0
&& local_header.Crc == 0
&& local_header.IsDirectory == false
);
if (dir_header != null)
{
local_header.UncompressedSize = dir_header.Size;
local_header.CompressedSize = dir_header.CompressedSize;
local_header.Crc = (uint)dir_header.Crc;
}
// If we have CompressedSize, there is data to be read
if (local_header.CompressedSize > 0)
{
header.HasData = true;
} // Check if zip is streaming ( Length is 0 and is declared in PostDataDescriptor )
else if (local_header.Flags.HasFlag(HeaderFlags.UsePostDataDescriptor))
{
var nextHeaderBytes = await reader.ReadUInt32Async().ConfigureAwait(false);
((IStreamStack)rewindableStream).Rewind(sizeof(uint));
// Check if next data is PostDataDescriptor, streamed file with 0 length
header.HasData = !IsHeader(nextHeaderBytes);
}
else // We are not streaming and compressed size is 0, we have no data
{
header.HasData = false;
}
}
yield return header;
}
}
}

76
src/SharpCompress/IO/MarkingBinaryReader.cs
View File

@@ -163,7 +163,9 @@ internal class MarkingBinaryReader : BinaryReader
{
CurrentReadByteCount++;
var buffer = new byte[1];
var bytesRead = await BaseStream.ReadAsync(buffer, 0, 1, cancellationToken).ConfigureAwait(false);
var bytesRead = await BaseStream
.ReadAsync(buffer, 0, 1, cancellationToken)
.ConfigureAwait(false);
if (bytesRead != 1)
{
throw new EndOfStreamException();
@@ -171,14 +173,19 @@ internal class MarkingBinaryReader : BinaryReader
return buffer[0];
}
public virtual async Task<byte[]> ReadBytesAsync(int count, CancellationToken cancellationToken = default)
public virtual async Task<byte[]> ReadBytesAsync(
int count,
CancellationToken cancellationToken = default
)
{
CurrentReadByteCount += count;
var bytes = new byte[count];
var totalRead = 0;
while (totalRead < count)
{
var bytesRead = await BaseStream.ReadAsync(bytes, totalRead, count - totalRead, cancellationToken).ConfigureAwait(false);
var bytesRead = await BaseStream
.ReadAsync(bytes, totalRead, count - totalRead, cancellationToken)
.ConfigureAwait(false);
if (bytesRead == 0)
{
throw new InvalidFormatException(
@@ -198,28 +205,42 @@ internal class MarkingBinaryReader : BinaryReader
await ReadByteAsync(cancellationToken).ConfigureAwait(false) != 0;
public async Task<short> ReadInt16Async(CancellationToken cancellationToken = default) =>
BinaryPrimitives.ReadInt16LittleEndian(await ReadBytesAsync(2, cancellationToken).ConfigureAwait(false));
BinaryPrimitives.ReadInt16LittleEndian(
await ReadBytesAsync(2, cancellationToken).ConfigureAwait(false)
);
public async Task<int> ReadInt32Async(CancellationToken cancellationToken = default) =>
BinaryPrimitives.ReadInt32LittleEndian(await ReadBytesAsync(4, cancellationToken).ConfigureAwait(false));
BinaryPrimitives.ReadInt32LittleEndian(
await ReadBytesAsync(4, cancellationToken).ConfigureAwait(false)
);
public async Task<long> ReadInt64Async(CancellationToken cancellationToken = default) =>
BinaryPrimitives.ReadInt64LittleEndian(await ReadBytesAsync(8, cancellationToken).ConfigureAwait(false));
BinaryPrimitives.ReadInt64LittleEndian(
await ReadBytesAsync(8, cancellationToken).ConfigureAwait(false)
);
public async Task<sbyte> ReadSByteAsync(CancellationToken cancellationToken = default) =>
(sbyte)await ReadByteAsync(cancellationToken).ConfigureAwait(false);
public async Task<ushort> ReadUInt16Async(CancellationToken cancellationToken = default) =>
BinaryPrimitives.ReadUInt16LittleEndian(await ReadBytesAsync(2, cancellationToken).ConfigureAwait(false));
BinaryPrimitives.ReadUInt16LittleEndian(
await ReadBytesAsync(2, cancellationToken).ConfigureAwait(false)
);
public async Task<uint> ReadUInt32Async(CancellationToken cancellationToken = default) =>
BinaryPrimitives.ReadUInt32LittleEndian(await ReadBytesAsync(4, cancellationToken).ConfigureAwait(false));
BinaryPrimitives.ReadUInt32LittleEndian(
await ReadBytesAsync(4, cancellationToken).ConfigureAwait(false)
);
public async Task<ulong> ReadUInt64Async(CancellationToken cancellationToken = default) =>
BinaryPrimitives.ReadUInt64LittleEndian(await ReadBytesAsync(8, cancellationToken).ConfigureAwait(false));
BinaryPrimitives.ReadUInt64LittleEndian(
await ReadBytesAsync(8, cancellationToken).ConfigureAwait(false)
);
public Task<ulong> ReadRarVIntAsync(int maxBytes = 10, CancellationToken cancellationToken = default) =>
DoReadRarVIntAsync((maxBytes - 1) * 7, cancellationToken);
public Task<ulong> ReadRarVIntAsync(
int maxBytes = 10,
CancellationToken cancellationToken = default
) => DoReadRarVIntAsync((maxBytes - 1) * 7, cancellationToken);
private async Task<ulong> DoReadRarVIntAsync(int maxShift, CancellationToken cancellationToken)
{
@@ -247,16 +268,35 @@ internal class MarkingBinaryReader : BinaryReader
throw new FormatException("malformed vint");
}
public Task<uint> ReadRarVIntUInt32Async(int maxBytes = 5, CancellationToken cancellationToken = default) =>
DoReadRarVIntUInt32Async((maxBytes - 1) * 7, cancellationToken);
public Task<uint> ReadRarVIntUInt32Async(
int maxBytes = 5,
CancellationToken cancellationToken = default
) => DoReadRarVIntUInt32Async((maxBytes - 1) * 7, cancellationToken);
public async Task<ushort> ReadRarVIntUInt16Async(int maxBytes = 3, CancellationToken cancellationToken = default) =>
checked((ushort)await DoReadRarVIntUInt32Async((maxBytes - 1) * 7, cancellationToken).ConfigureAwait(false));
public async Task<ushort> ReadRarVIntUInt16Async(
int maxBytes = 3,
CancellationToken cancellationToken = default
) =>
checked(
(ushort)
await DoReadRarVIntUInt32Async((maxBytes - 1) * 7, cancellationToken)
.ConfigureAwait(false)
);
public async Task<byte> ReadRarVIntByteAsync(int maxBytes = 2, CancellationToken cancellationToken = default) =>
checked((byte)await DoReadRarVIntUInt32Async((maxBytes - 1) * 7, cancellationToken).ConfigureAwait(false));
public async Task<byte> ReadRarVIntByteAsync(
int maxBytes = 2,
CancellationToken cancellationToken = default
) =>
checked(
(byte)
await DoReadRarVIntUInt32Async((maxBytes - 1) * 7, cancellationToken)
.ConfigureAwait(false)
);
private async Task<uint> DoReadRarVIntUInt32Async(int maxShift, CancellationToken cancellationToken)
private async Task<uint> DoReadRarVIntUInt32Async(
int maxShift,
CancellationToken cancellationToken
)
{
var shift = 0;
uint result = 0;

33
src/SharpCompress/IO/SharpCompressStream.cs
View File

@@ -211,16 +211,7 @@ public class SharpCompressStream : Stream, IStreamStack
// Fill buffer if needed
if (_bufferedLength == 0)
{
// Try async read first if underlying stream only supports async
try
{
_bufferedLength = Stream.Read(_buffer!, 0, _bufferSize);
}
catch (NotSupportedException)
{
// If synchronous read is not supported, try async
_bufferedLength = Stream.ReadAsync(_buffer!, 0, _bufferSize).GetAwaiter().GetResult();
}
_bufferedLength = Stream.Read(_buffer!, 0, _bufferSize);
_bufferPosition = 0;
}
int available = _bufferedLength - _bufferPosition;
@@ -233,16 +224,7 @@ public class SharpCompressStream : Stream, IStreamStack
return toRead;
}
// If buffer exhausted, refill
int r;
try
{
r = Stream.Read(_buffer!, 0, _bufferSize);
}
catch (NotSupportedException)
{
// If synchronous read is not supported, try async
r = Stream.ReadAsync(_buffer!, 0, _bufferSize).GetAwaiter().GetResult();
}
int r = Stream.Read(_buffer!, 0, _bufferSize);
if (r == 0)
return 0;
_bufferedLength = r;
@@ -263,16 +245,7 @@ public class SharpCompressStream : Stream, IStreamStack
{
return 0;
}
int read;
try
{
read = Stream.Read(buffer, offset, count);
}
catch (NotSupportedException)
{
// If synchronous read is not supported, try async
read = Stream.ReadAsync(buffer, offset, count).GetAwaiter().GetResult();
}
int read = Stream.Read(buffer, offset, count);
_internalPosition += read;
return read;
}

27
src/SharpCompress/Readers/AbstractReader.cs
View File

@@ -17,7 +17,8 @@ public abstract class AbstractReader<TEntry, TVolume> : IReader
where TVolume : Volume
{
private bool _completed;
protected IEnumerator<TEntry>? _entriesForCurrentReadStream;
private IEnumerator<TEntry>? _entriesForCurrentReadStream;
private IAsyncEnumerator<TEntry>? _entriesForCurrentReadStreamAsync;
private bool _wroteCurrentEntry;
internal AbstractReader(ReaderOptions options, ArchiveType archiveType)
@@ -104,7 +105,8 @@ public abstract class AbstractReader<TEntry, TVolume> : IReader
}
if (_entriesForCurrentReadStream is null)
{
var loaded = await LoadStreamForReadingAsync(RequestInitialStream(), cancellationToken).ConfigureAwait(false);
var loaded = await LoadStreamForReadingAsync(RequestInitialStream(), cancellationToken)
.ConfigureAwait(false);
return loaded;
}
if (!_wroteCurrentEntry)
@@ -122,7 +124,10 @@ public abstract class AbstractReader<TEntry, TVolume> : IReader
protected bool LoadStreamForReading(Stream stream)
{
_entriesForCurrentReadStream?.Dispose();
if (_entriesForCurrentReadStream is not null)
{
_entriesForCurrentReadStream.Dispose();
}
if (stream is null || !stream.CanRead)
{
throw new MultipartStreamRequiredException(
@@ -140,7 +145,11 @@ public abstract class AbstractReader<TEntry, TVolume> : IReader
CancellationToken cancellationToken = default
)
{
_entriesForCurrentReadStream?.Dispose();
if (_entriesForCurrentReadStreamAsync is null)
{
throw new InvalidOperationException("Entries async enumerator is not initialized.");
}
_entriesForCurrentReadStreamAsync?.DisposeAsync();
if (stream is null || !stream.CanRead)
{
throw new MultipartStreamRequiredException(
@@ -150,8 +159,9 @@ public abstract class AbstractReader<TEntry, TVolume> : IReader
);
}
// Default implementation uses sync version
_entriesForCurrentReadStream = GetEntries(stream).GetEnumerator();
return _entriesForCurrentReadStream.MoveNext();
_entriesForCurrentReadStreamAsync = GetEntriesAsync(stream, cancellationToken)
.GetAsyncEnumerator(cancellationToken);
return await _entriesForCurrentReadStreamAsync.MoveNextAsync();
}
protected virtual Stream RequestInitialStream() =>
@@ -162,6 +172,11 @@ public abstract class AbstractReader<TEntry, TVolume> : IReader
protected abstract IEnumerable<TEntry> GetEntries(Stream stream);
protected abstract IAsyncEnumerable<TEntry> GetEntriesAsync(
Stream stream,
CancellationToken cancellationToken = default
);
#region Entry Skip/Write
private void SkipEntry()

16
src/SharpCompress/Readers/Arc/ArcReader.cs
View File

@@ -3,6 +3,7 @@ using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using SharpCompress.Common;
using SharpCompress.Common.Arc;
@@ -37,5 +38,20 @@ namespace SharpCompress.Readers.Arc
yield return new ArcEntry(new ArcFilePart(header, stream));
}
}
protected override async IAsyncEnumerable<ArcEntry> GetEntriesAsync(
Stream stream,
[System.Runtime.CompilerServices.EnumeratorCancellation]
CancellationToken cancellationToken = default
)
{
ArcEntryHeader headerReader = new ArcEntryHeader(Options.ArchiveEncoding);
ArcEntryHeader? header;
while ((header = headerReader.ReadHeader(stream)) != null)
{
cancellationToken.ThrowIfCancellationRequested();
yield return new ArcEntry(new ArcFilePart(header, stream));
}
}
}
}

42
src/SharpCompress/Readers/Arj/ArjReader.cs
View File

@@ -1,6 +1,7 @@
using System;
using System.Collections.Generic;
using System.IO;
using System.Threading;
using SharpCompress.Common;
using SharpCompress.Common.Arj;
using SharpCompress.Common.Arj.Headers;
@@ -85,5 +86,46 @@ namespace SharpCompress.Readers.Arj
protected virtual IEnumerable<FilePart> CreateFilePartEnumerableForCurrentEntry() =>
Entry.Parts;
protected override async IAsyncEnumerable<ArjEntry> GetEntriesAsync(
Stream stream,
[System.Runtime.CompilerServices.EnumeratorCancellation]
CancellationToken cancellationToken = default
)
{
var encoding = new ArchiveEncoding();
var mainHeaderReader = new ArjMainHeader(encoding);
var localHeaderReader = new ArjLocalHeader(encoding);
var mainHeader = mainHeaderReader.Read(stream);
if (mainHeader?.IsVolume == true)
{
throw new MultiVolumeExtractionException(
"Multi volumes are currently not supported"
);
}
if (mainHeader?.IsGabled == true)
{
throw new CryptographicException(
"Password protected archives are currently not supported"
);
}
if (_volume == null)
{
_volume = new ArjVolume(stream, Options, 0);
ValidateArchive(_volume);
}
while (true)
{
cancellationToken.ThrowIfCancellationRequested();
var localHeader = localHeaderReader.Read(stream);
if (localHeader == null)
break;
yield return new ArjEntry(new ArjFilePart((ArjLocalHeader)localHeader, stream));
}
}
}
}

1
src/SharpCompress/Readers/Arj/MultiVolumeArjReader.cs
View File

@@ -6,6 +6,7 @@ using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using SharpCompress.Common;
using SharpCompress.Common.Arj;

38
src/SharpCompress/Readers/Arj/SingleVolumeArjReader.cs
View File

@@ -1,31 +1,31 @@
using System;
using System.IO;
using System.Threading;
using SharpCompress.Common;
using SharpCompress.Common.Arj;
namespace SharpCompress.Readers.Arj
namespace SharpCompress.Readers.Arj;
internal class SingleVolumeArjReader : ArjReader
{
internal class SingleVolumeArjReader : ArjReader
private readonly Stream _stream;
internal SingleVolumeArjReader(Stream stream, ReaderOptions options)
: base(options)
{
private readonly Stream _stream;
stream.NotNull(nameof(stream));
_stream = stream;
}
internal SingleVolumeArjReader(Stream stream, ReaderOptions options)
: base(options)
protected override Stream RequestInitialStream() => _stream;
protected override void ValidateArchive(ArjVolume archive)
{
if (archive.IsMultiVolume)
{
stream.NotNull(nameof(stream));
_stream = stream;
}
protected override Stream RequestInitialStream() => _stream;
protected override void ValidateArchive(ArjVolume archive)
{
if (archive.IsMultiVolume)
{
throw new MultiVolumeExtractionException(
"Streamed archive is a Multi-volume archive. Use a different ArjReader method to extract."
);
}
throw new MultiVolumeExtractionException(
"Streamed archive is a Multi-volume archive. Use a different ArjReader method to extract."
);
}
}
}

14
src/SharpCompress/Readers/GZip/GZipReader.cs
View File

@@ -1,5 +1,6 @@
using System.Collections.Generic;
using System.IO;
using System.Threading;
using SharpCompress.Common;
using SharpCompress.Common.GZip;
@@ -30,4 +31,17 @@ public class GZipReader : AbstractReader<GZipEntry, GZipVolume>
protected override IEnumerable<GZipEntry> GetEntries(Stream stream) =>
GZipEntry.GetEntries(stream, Options);
protected override async IAsyncEnumerable<GZipEntry> GetEntriesAsync(
Stream stream,
[System.Runtime.CompilerServices.EnumeratorCancellation]
CancellationToken cancellationToken = default
)
{
foreach (var entry in GZipEntry.GetEntries(stream, Options))
{
cancellationToken.ThrowIfCancellationRequested();
yield return entry;
}
}
}

34
src/SharpCompress/Readers/Rar/RarReader.cs
View File

@@ -99,46 +99,20 @@ public abstract class RarReader : AbstractReader<RarReaderEntry, RarVolume>
}
}
protected async IAsyncEnumerable<RarReaderEntry> GetEntriesAsync(
protected override async IAsyncEnumerable<RarReaderEntry> GetEntriesAsync(
Stream stream,
[System.Runtime.CompilerServices.EnumeratorCancellation] CancellationToken cancellationToken = default
[System.Runtime.CompilerServices.EnumeratorCancellation]
CancellationToken cancellationToken = default
)
{
volume = new RarReaderVolume(stream, Options, 0);
await foreach (
var fp in volume.ReadFilePartsAsync(cancellationToken).ConfigureAwait(false)
)
await foreach (var fp in volume.ReadFilePartsAsync(cancellationToken).ConfigureAwait(false))
{
ValidateArchive(volume);
yield return new RarReaderEntry(volume.IsSolidArchive, fp);
}
}
protected override async Task<bool> LoadStreamForReadingAsync(
Stream stream,
CancellationToken cancellationToken = default
)
{
_entriesForCurrentReadStream?.Dispose();
if (stream is null || !stream.CanRead)
{
throw new MultipartStreamRequiredException(
"File is split into multiple archives: '"
+ Entry.Key
+ "'. A new readable stream is required. Use Cancel if it was intended."
);
}
// Materialize the async enumerable into a list to convert to sync enumerator
var entries = new List<RarReaderEntry>();
await foreach (var entry in GetEntriesAsync(stream, cancellationToken).ConfigureAwait(false))
{
entries.Add(entry);
}
_entriesForCurrentReadStream = entries.GetEnumerator();
return _entriesForCurrentReadStream.MoveNext();
}
protected virtual IEnumerable<FilePart> CreateFilePartEnumerableForCurrentEntry() =>
Entry.Parts;

21
src/SharpCompress/Readers/Tar/TarReader.cs
View File

@@ -1,6 +1,7 @@
using System;
using System.Collections.Generic;
using System.IO;
using System.Threading;
using SharpCompress.Archives.GZip;
using SharpCompress.Archives.Tar;
using SharpCompress.Common;
@@ -124,4 +125,24 @@ public class TarReader : AbstractReader<TarEntry, TarVolume>
compressionType,
Options.ArchiveEncoding
);
protected override async IAsyncEnumerable<TarEntry> GetEntriesAsync(
Stream stream,
[System.Runtime.CompilerServices.EnumeratorCancellation]
CancellationToken cancellationToken = default
)
{
foreach (
var entry in TarEntry.GetEntries(
StreamingMode.Streaming,
stream,
compressionType,
Options.ArchiveEncoding
)
)
{
cancellationToken.ThrowIfCancellationRequested();
yield return entry;
}
}
}

37
src/SharpCompress/Readers/Zip/ZipReader.cs
View File

@@ -1,5 +1,6 @@
using System.Collections.Generic;
using System.IO;
using System.Threading;
using SharpCompress.Common;
using SharpCompress.Common.Zip;
using SharpCompress.Common.Zip.Headers;
@@ -91,4 +92,40 @@ public class ZipReader : AbstractReader<ZipEntry, ZipVolume>
}
}
}
protected override async IAsyncEnumerable<ZipEntry> GetEntriesAsync(
Stream stream,
[System.Runtime.CompilerServices.EnumeratorCancellation]
CancellationToken cancellationToken = default
)
{
await foreach (var h in _headerFactory.ReadStreamHeaderAsync(stream, cancellationToken))
{
if (h != null)
{
switch (h.ZipHeaderType)
{
case ZipHeaderType.LocalEntry:
{
yield return new ZipEntry(
new StreamingZipFilePart((LocalEntryHeader)h, stream)
);
}
break;
case ZipHeaderType.DirectoryEntry:
// DirectoryEntry headers in the central directory are intentionally skipped.
// In streaming mode, we can only read forward, and DirectoryEntry headers
// reference LocalEntry headers that have already been processed. The file
// data comes from LocalEntry headers, not DirectoryEntry headers.
// For multi-volume ZIPs where file data spans multiple files, use ZipArchive
// instead, which requires seekable streams.
break;
case ZipHeaderType.DirectoryEnd:
{
yield break;
}
}
}
}
}
}

30
tests/SharpCompress.Test/Rar/RarReaderAsyncTests.cs
View File

@@ -75,7 +75,7 @@ public class RarReaderAsyncTests : ReaderTests
archives
.Select(s => Path.Combine(TEST_ARCHIVES_PATH, s))
.Select(p => File.OpenRead(p))
.Select(x=> new AsyncOnlyStream(x)),
.Select(x => new AsyncOnlyStream(x)),
new ReaderOptions { Password = "test" }
)
)
@@ -125,7 +125,7 @@ public class RarReaderAsyncTests : ReaderTests
var streams = archives
.Select(s => Path.Combine(SCRATCH2_FILES_PATH, s))
.Select(File.OpenRead)
.Select(x=> new AsyncOnlyStream(x))
.Select(x => new AsyncOnlyStream(x))
.ToList();
using (var reader = RarReader.Open(streams))
{
@@ -251,7 +251,12 @@ public class RarReaderAsyncTests : ReaderTests
using (
var stream = File.OpenRead(Path.Combine(TEST_ARCHIVES_PATH, "Rar.Audio_program.rar"))
)
using (var reader = await ReaderFactory.OpenAsync(stream, new ReaderOptions { LookForHeader = true }))
using (
var reader = await ReaderFactory.OpenAsync(
stream,
new ReaderOptions { LookForHeader = true }
)
)
{
while (await reader.MoveToNextEntryAsync())
{
@@ -313,7 +318,10 @@ public class RarReaderAsyncTests : ReaderTests
private async Task DoRar_Solid_Skip_Reader_Async(string filename)
{
using var stream = File.OpenRead(Path.Combine(TEST_ARCHIVES_PATH, filename));
using var reader = await ReaderFactory.OpenAsync(stream, new ReaderOptions { LookForHeader = true });
using var reader = await ReaderFactory.OpenAsync(
stream,
new ReaderOptions { LookForHeader = true }
);
while (await reader.MoveToNextEntryAsync())
{
if (reader.Entry.Key.NotNull().Contains("jpg"))
@@ -335,8 +343,13 @@ public class RarReaderAsyncTests : ReaderTests
private async Task DoRar_Reader_Skip_Async(string filename)
{
using var stream = new AsyncOnlyStream(File.OpenRead(Path.Combine(TEST_ARCHIVES_PATH, filename)));
using var reader = await ReaderFactory.OpenAsync(stream, new ReaderOptions { LookForHeader = true });
using var stream = new AsyncOnlyStream(
File.OpenRead(Path.Combine(TEST_ARCHIVES_PATH, filename))
);
using var reader = await ReaderFactory.OpenAsync(
stream,
new ReaderOptions { LookForHeader = true }
);
while (await reader.MoveToNextEntryAsync())
{
if (reader.Entry.Key.NotNull().Contains("jpg"))
@@ -358,7 +371,10 @@ public class RarReaderAsyncTests : ReaderTests
{
testArchive = Path.Combine(TEST_ARCHIVES_PATH, testArchive);
using Stream stream = new AsyncOnlyStream(File.OpenRead(testArchive));
using var reader = await ReaderFactory.OpenAsync(stream, readerOptions ?? new ReaderOptions());
using var reader = await ReaderFactory.OpenAsync(
stream,
readerOptions ?? new ReaderOptions()
);
while (await reader.MoveToNextEntryAsync())
{
if (!reader.Entry.IsDirectory)