public void Read_WithFormat_Works(string path, LzmaFormat format)
{
using (Stream stream = File.OpenRead(path))
using (XZInputStream xzStream = new XZInputStream(stream, format))
{
byte[] buffer = new byte[128];
Assert.Equal(14, xzStream.Read(buffer, 0, 128));
Assert.Equal(0, xzStream.Read(buffer, 0, 128));
Assert.Equal("Hello, World!\n", Encoding.UTF8.GetString(buffer, 0, 14));
xzStream.Dispose();
Assert.Throws <ObjectDisposedException>(() => xzStream.Read(buffer, 0, 128));
}
}
public void Read_Partial_Works(string path)
{
using (Stream stream = File.OpenRead(path))
using (XZInputStream xzStream = new XZInputStream(stream))
{
byte[] buffer = new byte[128];
Assert.Equal(7, xzStream.Read(buffer, 0, 7));
Assert.Equal(7, xzStream.Read(buffer, 7, 7));
Assert.Equal(0, xzStream.Read(buffer, 14, 114));
Assert.Equal("Hello, World!\n", Encoding.UTF8.GetString(buffer, 0, 14));
xzStream.Dispose();
Assert.Throws <ObjectDisposedException>(() => xzStream.Read(buffer, 0, 128));
}
}
public void CompressDecompressTextTest()
{
using (FileStream stream = File.Open(@"XZOutputStreamTests_CompressTextTest.txt.xz", FileMode.Create, FileAccess.Write, FileShare.None))
using (XZOutputStream compressedStream = new XZOutputStream(stream))
{
byte[] data = Encoding.UTF8.GetBytes("Hello, World! I am your XZ compressed file stream. Did we decompress correctly?");
compressedStream.Write(data, 0, data.Length);
}
using (FileStream stream = File.Open(@"XZOutputStreamTests_CompressTextTest.txt.xz", FileMode.Open, FileAccess.Read, FileShare.None))
using (XZInputStream decompressedStream = new XZInputStream(stream))
{
byte[] data = new byte[1024];
int read = decompressedStream.Read(data, 0, data.Length);
string text = Encoding.UTF8.GetString(data, 0, read);
Assert.Equal("Hello, World! I am your XZ compressed file stream. Did we decompress correctly?", text);
}
}
public EncodedFileInfo(Script p, string dirName, string fileName)
{
string section = $"EncodedFile-{dirName}-{fileName}";
if (p.Sections.ContainsKey(section) == false)
{
throw new FileDecodeFailException($"[{dirName}\\{fileName}] does not exists in [{p.FullPath}]");
}
List <string> encodedList = p.Sections[$"EncodedFile-{dirName}-{fileName}"].GetLinesOnce();
if (Ini.GetKeyValueFromLine(encodedList[0], out string key, out string value))
{
throw new FileDecodeFailException("Encoded lines are malformed");
}
// [Stage 1] Concat sliced base64-encoded lines into one string
byte[] decoded;
{
int.TryParse(value, out int blockCount);
encodedList.RemoveAt(0); // Remove "lines=n"
// Each line is 64KB block
if (Ini.GetKeyValueFromLines(encodedList, out List <string> keys, out List <string> base64Blocks))
{
throw new FileDecodeFailException("Encoded lines are malformed");
}
StringBuilder b = new StringBuilder();
foreach (string block in base64Blocks)
{
b.Append(block);
}
switch (b.Length % 4)
{
case 0:
break;
case 1:
throw new FileDecodeFailException("Encoded lines are malformed");
case 2:
b.Append("==");
break;
case 3:
b.Append("=");
break;
}
decoded = Convert.FromBase64String(b.ToString());
}
// [Stage 2] Read final footer
const int finalFooterLen = 0x24;
int finalFooterIdx = decoded.Length - finalFooterLen;
// 0x00 - 0x04 : 4B -> CRC32
uint full_crc32 = BitConverter.ToUInt32(decoded, finalFooterIdx + 0x00);
// 0x0C - 0x0F : 4B -> Zlib Compressed Footer Length
int compressedFooterLen = (int)BitConverter.ToUInt32(decoded, finalFooterIdx + 0x0C);
int compressedFooterIdx = decoded.Length - (finalFooterLen + compressedFooterLen);
// 0x10 - 0x17 : 8B -> Zlib Compressed File Length
int compressedBodyLen = (int)BitConverter.ToUInt64(decoded, finalFooterIdx + 0x10);
// [Stage 3] Validate final footer
this.FinalFooterValid = true;
if (compressedBodyLen != compressedFooterIdx)
{
this.FinalFooterValid = false;
}
uint calcFull_crc32 = Crc32Checksum.Crc32(decoded, 0, finalFooterIdx);
if (full_crc32 != calcFull_crc32)
{
this.FinalFooterValid = false;
}
if (this.FinalFooterValid == false)
{
return;
}
// [Stage 4] Decompress first footer
byte[] rawFooter;
using (MemoryStream rawFooterStream = new MemoryStream())
{
using (MemoryStream ms = new MemoryStream(decoded, compressedFooterIdx, compressedFooterLen))
using (ZLibStream zs = new ZLibStream(ms, CompressionMode.Decompress, CompressionLevel.Default))
{
zs.CopyTo(rawFooterStream);
}
rawFooter = rawFooterStream.ToArray();
}
// [Stage 5] Read first footer
this.FirstFooterValid = true;
// 0x200 - 0x207 : 8B -> Length of raw file, in little endian
int rawBodyLen = (int)BitConverter.ToUInt32(rawFooter, 0x200);
// 0x208 - 0x20F : 8B -> Length of zlib-compressed file, in little endian
// Note: In Type 2, 0x208 entry is null - padded
int compressedBodyLen2 = (int)BitConverter.ToUInt32(rawFooter, 0x208);
// 0x220 - 0x223 : 4B -> CRC32C Checksum of zlib-compressed file
uint compressedBody_crc32 = BitConverter.ToUInt32(rawFooter, 0x220);
// 0x224 : 1B -> Compress Mode (Type 1 : 00, Type 2 : 01)
byte compMode = rawFooter[0x224];
// 0x225 : 1B -> ZLib Compress Level (Type 1 : 01~09, Type 2 : 00)
byte compLevel = rawFooter[0x225];
// [Stage 6] Validate first footer
if (compMode == 0)
{
this.Mode = EncodedFile.EncodeMode.ZLib;
if (compLevel < 1 || 9 < compLevel)
{
this.FirstFooterValid = false;
}
if (compressedBodyLen2 == 0 || (compressedBodyLen2 != compressedBodyLen))
{
this.FirstFooterValid = false;
}
}
else if (compMode == 1)
{
this.Mode = EncodedFile.EncodeMode.Raw;
if (compLevel != 0)
{
this.FirstFooterValid = false;
}
if (compressedBodyLen2 != 0)
{
this.FirstFooterValid = false;
}
}
else // Wrong compMode
{
this.FirstFooterValid = false;
}
if (this.FirstFooterValid == false)
{
return;
}
// [Stage 7] Decompress body
switch ((EncodedFile.EncodeMode)compMode)
{
case EncodedFile.EncodeMode.ZLib:
{
this.RawBodyStream = new MemoryStream();
using (MemoryStream ms = new MemoryStream(decoded, 0, compressedBodyLen))
using (ZLibStream zs = new ZLibStream(ms, CompressionMode.Decompress, CompressionLevel.Default))
{
zs.CopyTo(this.RawBodyStream);
}
this.CompressedBodyValid = true;
}
break;
case EncodedFile.EncodeMode.Raw:
{
this.RawBodyStream = new MemoryStream(decoded, 0, rawBodyLen);
this.CompressedBodyValid = true;
}
break;
case EncodedFile.EncodeMode.XZ:
{
using (MemoryStream ms = new MemoryStream(decoded, 0, compressedBodyLen))
using (XZInputStream xzs = new XZInputStream(ms))
{
xzs.CopyTo(this.RawBodyStream);
}
this.CompressedBodyValid = true;
}
break;
default:
throw new InternalException($"Wrong EncodeMode [{compMode}]");
}
this.RawBodyStream.Position = 0;
// [Stage 8] Validate decompressed body
this.RawBodyValid = true;
uint calcCompBody_crc32 = Crc32Checksum.Crc32(RawBodyStream.ToArray());
if (compressedBody_crc32 != calcCompBody_crc32)
{
this.RawBodyValid = false;
}
// [Stage 9] Return decompressed body stream
this.RawBodyStream.Position = 0;
}
private static MemoryStream Decode(List <string> encodedList)
{
if (Ini.GetKeyValueFromLine(encodedList[0], out string key, out string value))
{
throw new FileDecodeFailException("Encoded lines are malformed");
}
// [Stage 1] Concat sliced base64-encoded lines into one string
byte[] decoded;
{
int.TryParse(value, out int blockCount);
encodedList.RemoveAt(0); // Remove "lines=n"
// Each line is 64KB block
if (Ini.GetKeyValueFromLines(encodedList, out List <string> keys, out List <string> base64Blocks))
{
throw new FileDecodeFailException("Encoded lines are malformed");
}
StringBuilder b = new StringBuilder();
foreach (string block in base64Blocks)
{
b.Append(block);
}
switch (b.Length % 4)
{
case 0:
break;
case 1:
throw new FileDecodeFailException("Encoded lines are malformed");
case 2:
b.Append("==");
break;
case 3:
b.Append("=");
break;
}
decoded = Convert.FromBase64String(b.ToString());
}
// [Stage 2] Read final footer
const int finalFooterLen = 0x24;
int finalFooterIdx = decoded.Length - finalFooterLen;
// 0x00 - 0x04 : 4B -> CRC32
uint full_crc32 = BitConverter.ToUInt32(decoded, finalFooterIdx + 0x00);
// 0x0C - 0x0F : 4B -> Zlib Compressed Footer Length
int compressedFooterLen = (int)BitConverter.ToUInt32(decoded, finalFooterIdx + 0x0C);
int compressedFooterIdx = decoded.Length - (finalFooterLen + compressedFooterLen);
// 0x10 - 0x17 : 8B -> Zlib Compressed File Length
int compressedBodyLen = (int)BitConverter.ToUInt64(decoded, finalFooterIdx + 0x10);
// [Stage 3] Validate final footer
if (compressedBodyLen != compressedFooterIdx)
{
throw new FileDecodeFailException($"Encoded file is corrupted");
}
uint calcFull_crc32 = Crc32Checksum.Crc32(decoded, 0, finalFooterIdx);
if (full_crc32 != calcFull_crc32)
{
throw new FileDecodeFailException($"Encoded file is corrupted");
}
// [Stage 4] Decompress first footer
byte[] rawFooter;
using (MemoryStream rawFooterStream = new MemoryStream())
{
using (MemoryStream ms = new MemoryStream(decoded, compressedFooterIdx, compressedFooterLen))
using (ZLibStream zs = new ZLibStream(ms, CompressionMode.Decompress, CompressionLevel.Default))
{
zs.CopyTo(rawFooterStream);
}
rawFooter = rawFooterStream.ToArray();
}
// [Stage 5] Read first footer
// 0x200 - 0x207 : 8B -> Length of raw file, in little endian
int rawBodyLen = BitConverter.ToInt32(rawFooter, 0x200);
// 0x208 - 0x20F : 8B -> Length of zlib-compressed file, in little endian
// Note: In Type 2, 0x208 entry is null - padded
int compressedBodyLen2 = BitConverter.ToInt32(rawFooter, 0x208);
// 0x220 - 0x223 : 4B -> CRC32C Checksum of zlib-compressed file
uint compressedBody_crc32 = BitConverter.ToUInt32(rawFooter, 0x220);
// 0x224 : 1B -> Compress Mode (Type 1 : 00, Type 2 : 01)
byte compMode = rawFooter[0x224];
// 0x225 : 1B -> ZLib Compress Level (Type 1 : 01~09, Type 2 : 00)
byte compLevel = rawFooter[0x225];
// [Stage 6] Validate first footer
switch ((EncodeMode)compMode)
{
case EncodeMode.ZLib: // Type 1, zlib
{
if (compressedBodyLen2 == 0 || (compressedBodyLen2 != compressedBodyLen))
{
throw new FileDecodeFailException($"Encoded file is corrupted: compMode");
}
if (compLevel < 1 || 9 < compLevel)
{
throw new FileDecodeFailException($"Encoded file is corrupted: compLevel");
}
}
break;
case EncodeMode.Raw: // Type 2, raw
{
if (compressedBodyLen2 != 0)
{
throw new FileDecodeFailException($"Encoded file is corrupted: compMode");
}
if (compLevel != 0)
{
throw new FileDecodeFailException($"Encoded file is corrupted: compLevel");
}
}
break;
case EncodeMode.XZ: // Type 3, LZMA
{
if (compressedBodyLen2 == 0 || (compressedBodyLen2 != compressedBodyLen))
{
throw new FileDecodeFailException($"Encoded file is corrupted: compMode");
}
if (compLevel < 1 || 9 < compLevel)
{
throw new FileDecodeFailException($"Encoded file is corrupted: compLevel");
}
}
break;
default:
throw new FileDecodeFailException($"Encoded file is corrupted: compMode");
}
// [Stage 7] Decompress body
MemoryStream rawBodyStream = new MemoryStream(); // This stream should be alive even after this method returns
switch ((EncodeMode)compMode)
{
case EncodeMode.ZLib: // Type 1, zlib
{
using (MemoryStream ms = new MemoryStream(decoded, 0, compressedBodyLen))
using (ZLibStream zs = new ZLibStream(ms, CompressionMode.Decompress, false))
{
zs.CopyTo(rawBodyStream);
}
}
break;
case EncodeMode.Raw: // Type 2, raw
{
// rawBodyStream = new MemoryStream(decoded, 0, rawBodyLen);
rawBodyStream.Write(decoded, 0, rawBodyLen);
}
break;
case EncodeMode.XZ: // Type 3, LZMA
{
using (MemoryStream ms = new MemoryStream(decoded, 0, compressedBodyLen))
using (XZInputStream xzs = new XZInputStream(ms))
{
xzs.CopyTo(rawBodyStream);
}
}
break;
default:
throw new FileDecodeFailException($"Encoded file is corrupted: compMode");
}
rawBodyStream.Position = 0;
// [Stage 8] Validate decompressed body
uint calcCompBody_crc32 = Crc32Checksum.Crc32(rawBodyStream.ToArray());
if (compressedBody_crc32 != calcCompBody_crc32)
{
throw new FileDecodeFailException($"Encoded file is corrupted: body");
}
// [Stage 9] Return decompressed body stream
rawBodyStream.Position = 0;
return(rawBodyStream);
}
private static void InitializeCardsManager()
{
manager = new CardsManager();
if (!File.Exists(cache_data_file))
{
max_steps += 2;
if (!File.Exists(cache_data_printings_file))
{
max_steps += 3;
if (!File.Exists(cache_data_printings_archive))
{
max_steps += 2;
}
if (!File.Exists(cache_data_tokens_file))
{
max_steps += 2;
}
}
}
if (!File.Exists(cache_data_file))
{
Console.WriteLine(GetSteps() + "Cache (" + cache_data_file + ") not found, creating cache...");
if (!File.Exists(cache_data_printings_file))
{
Console.WriteLine(GetSteps() + "Card data (" + cache_data_printings_file + ") not found...");
if (!File.Exists(cache_data_printings_archive))
{
Console.WriteLine(GetSteps() + "Card archive (" + cache_data_printings_archive + ") not found, downloading...");
Download(allsets_url, cache_data_printings_archive, true);
Console.WriteLine(GetSteps() + "Download complete");
}
if (!File.Exists(cache_data_tokens_file))
{
Console.WriteLine(GetSteps() + "Token XML (" + cache_data_tokens_file + ") not found, downloading...");
Download(tokens_url, cache_data_tokens_file);
Console.WriteLine(GetSteps() + "Download complete");
}
Console.WriteLine(GetSteps() + "Extracting card archive...");
using (Stream xz = new XZInputStream(File.OpenRead(cache_data_printings_archive)))
using (Stream stream = new FileStream(cache_data_printings_file, FileMode.OpenOrCreate))
{
xz.CopyTo(stream);
}
Console.WriteLine(GetSteps() + "Extraction complete");
}
Console.WriteLine(GetSteps() + "Processing data set (cards and tokens)...");
string string_data = File.ReadAllText(cache_data_printings_file);
JObject data = JObject.Parse(string_data);
List <Thread> threads = new List <Thread>();
foreach (var set in data)
{
threads.Add(new Thread(() =>
{
Set.Parse(set.Key, set.Value.ToObject <JObject>(), manager);
}));
}
foreach (var thread in threads)
{
thread.Start();
}
foreach (var thread in threads)
{
thread.Join();
}
WriteToBinaryFile(cache_data_file, manager);
Console.WriteLine(GetSteps() + "Cache (" + cache_data_file + ") creation completed.");
}
else
{
Console.Write(GetSteps() + "Cache (" + cache_data_file + ") found! Loading...");
manager = ReadFromBinaryFile <CardsManager>(cache_data_file);
Console.WriteLine(" Done");
}
}
/// <summary>
///
/// </summary>
/// <param name="driveLetter"></param>
/// <param name="fileName"></param>
/// <param name="eCompType"></param>
/// <param name="removeAfter"></param>
/// <returns></returns>
public bool WriteDrive(string driveLetter, string fileName, EnumCompressionType eCompType, bool removeAfter)
{
IsCancelling = false;
var dtStart = DateTime.Now;
if (!File.Exists(fileName))
{
throw new ArgumentException(fileName + Resources.Disk_WriteDrive__doesn_t_exist);
}
//
// Get physical drive partition for logical partition
//
var physicalDrive = _diskAccess.GetPhysicalPathForLogicalPath(driveLetter);
if (string.IsNullOrEmpty(physicalDrive))
{
LogMsg(Resources.Disk_WriteDrive_Error__Couldn_t_map_partition_to_physical_drive);
_diskAccess.UnlockDrive();
return(false);
}
//
// Lock logical drive
//
var success = _diskAccess.LockDrive(driveLetter);
if (!success)
{
LogMsg(Resources.Disk_WriteDrive_Failed_to_lock_drive);
return(false);
}
//
// Get drive size
//
var driveSize = _diskAccess.GetDriveSize(physicalDrive);
if (driveSize <= 0)
{
LogMsg(Resources.Disk_WriteDrive_Failed_to_get_device_size);
_diskAccess.UnlockDrive();
return(false);
}
//
// Open the physical drive
//
var physicalHandle = _diskAccess.Open(physicalDrive);
if (physicalHandle == null)
{
LogMsg(Resources.Disk_WriteDrive_Failed_to_open_physical_drive);
_diskAccess.UnlockDrive();
return(false);
}
var buffer = new byte[Globals.MaxBufferSize];
long offset = 0;
var fileLength = new FileInfo(fileName).Length;
var uncompressedlength = fileLength;
var errored = true;
using (var basefs = new FileStream(fileName, FileMode.Open, FileAccess.Read, FileShare.Read))
{
Stream fs;
switch (eCompType)
{
case EnumCompressionType.Zip:
var zipFile = new ZipFile(basefs);
var ze = (from ZipEntry zipEntry in zipFile
where zipEntry.IsFile
select zipEntry).FirstOrDefault();
if (ze == null)
{
LogMsg(Resources.Disk_WriteDrive_Error_reading_zip_input_stream);
goto readfail2;
}
var zis = zipFile.GetInputStream(ze);
uncompressedlength = ze.Size;
fs = zis;
break;
case EnumCompressionType.Gzip:
var gzis = new GZipInputStream(basefs)
{
IsStreamOwner = true
};
uncompressedlength = gzis.Length;
fs = gzis;
break;
case EnumCompressionType.Targzip:
var gzos = new GZipInputStream(basefs)
{
IsStreamOwner = true
};
var tis = new TarInputStream(gzos);
TarEntry tarEntry;
do
{
tarEntry = tis.GetNextEntry();
} while (tarEntry.IsDirectory);
uncompressedlength = tarEntry.Size;
fs = tis;
break;
case EnumCompressionType.XZ:
var xzs = new XZInputStream(basefs);
uncompressedlength = xzs.Length;
fs = xzs;
break;
default:
// No compression - direct to file stream
fs = basefs;
uncompressedlength = fs.Length;
break;
}
var bufferOffset = 0;
using (var br = new BinaryReader(fs))
{
while (offset < uncompressedlength && !IsCancelling)
{
// Note: There's a problem writing certain lengths to the underlying physical drive.
// This appears when we try to read from a compressed stream as it gives us
// "strange" lengths which then fail to be written via Writefile() so try to build
// up a decent block of bytes here...
int readBytes;
do
{
readBytes = br.Read(buffer, bufferOffset, buffer.Length - bufferOffset);
bufferOffset += readBytes;
} while (bufferOffset < Globals.MaxBufferSize && readBytes != 0);
int wroteBytes;
var bytesToWrite = bufferOffset;
var trailingBytes = 0;
// Assume that the underlying physical drive will at least accept powers of two!
if (!IsPowerOfTwo((ulong)bufferOffset))
{
// Find highest bit (32-bit max)
var highBit = 31;
for (; ((bufferOffset & (1 << highBit)) == 0) && highBit >= 0; highBit--)
{
}
// Work out trailing bytes after last power of two
var lastPowerOf2 = 1 << highBit;
bytesToWrite = lastPowerOf2;
trailingBytes = bufferOffset - lastPowerOf2;
}
if (_diskAccess.Write(buffer, bytesToWrite, out wroteBytes) < 0)
{
LogMsg(Resources.Disk_WriteDrive_Error_writing_data_to_drive__ + Marshal.GetHRForLastWin32Error());
goto readfail1;
}
if (wroteBytes != bytesToWrite)
{
LogMsg(Resources.Disk_WriteDrive_Error_writing_data_to_drive___past_EOF_);
goto readfail1;
}
// Move trailing bytes up - Todo: Suboptimal
if (trailingBytes > 0)
{
Buffer.BlockCopy(buffer, bufferOffset - trailingBytes, buffer, 0, trailingBytes);
bufferOffset = trailingBytes;
}
else
{
bufferOffset = 0;
}
offset += (uint)wroteBytes;
var percentDone = (int)(100 * offset / uncompressedlength);
var tsElapsed = DateTime.Now.Subtract(dtStart);
var bytesPerSec = offset / tsElapsed.TotalSeconds;
Progress(percentDone);
LogMsg(Resources.Disk_WriteDrive_Wrote + @": " + (offset / Globals.MbModifier) + @" / " +
(uncompressedlength / Globals.MbModifier) + " MB; " +
string.Format("{0:F}", (bytesPerSec / Globals.MbModifier)) + @" MB/s; " + Resources.Disk_Elapsed_time + ": " + tsElapsed.ToString(@"hh\:mm\:ss"));
}
}
if (fs is ZipOutputStream)
{
((ZipOutputStream)fs).CloseEntry();
((ZipOutputStream)fs).Close();
}
else if (fs is TarOutputStream)
{
((TarOutputStream)fs).CloseEntry();
fs.Close();
}
else if (fs is GZipOutputStream)
{
fs.Close();
}
else if (fs is XZOutputStream)
{
fs.Close();
}
}
errored = false;
if (removeAfter && !IsCancelling)
{
_diskAccess.UnmountDrive();
}
readfail1:
_diskAccess.Close();
readfail2:
_diskAccess.UnlockDrive();
var tstotalTime = DateTime.Now.Subtract(dtStart);
if (IsCancelling)
{
LogMsg(Resources.Disk_WriteDrive_Cancelled);
}
else
{
LogMsg(Resources.Disk_WriteDrive_Wrote + @" " + offset + @" " + Resources.Disk_WriteDrive_bytes + @". " + Resources.Disk_Elapsed_time + @": " + tstotalTime.ToString(@"hh\:mm\:ss"));
}
Progress(0);
return(!errored);
}
private void LoadRun(CompressedRun run)
{
int toCopy = (int)(run.SectorCount * Sizes.Sector);
switch (run.Type)
{
case RunType.ZlibCompressed:
this.stream.Position = run.CompOffset + 2; // 2 byte zlib header
using (DeflateStream ds = new DeflateStream(this.stream, CompressionMode.Decompress, true))
{
StreamUtilities.ReadExact(ds, this.decompBuffer, 0, toCopy);
}
break;
case RunType.AdcCompressed:
this.stream.Position = run.CompOffset;
byte[] compressed = StreamUtilities.ReadExact(this.stream, (int)run.CompLength);
if (ADCDecompress(compressed, 0, compressed.Length, this.decompBuffer, 0) != toCopy)
{
throw new InvalidDataException("Run too short when decompressed");
}
break;
case RunType.BZlibCompressed:
using (
BZip2DecoderStream ds =
new BZip2DecoderStream(
new SubStream(
this.stream,
run.CompOffset,
run.CompLength),
Ownership.None))
{
StreamUtilities.ReadExact(ds, this.decompBuffer, 0, toCopy);
}
break;
case RunType.LzfseCompressed:
this.stream.Position = run.CompOffset;
byte[] lzfseCompressed = StreamUtilities.ReadExact(this.stream, (int)run.CompLength);
if (LzfseCompressor.Decompress(lzfseCompressed, this.decompBuffer) != toCopy)
{
throw new InvalidDataException("Run too short when decompressed");
}
break;
case RunType.LzmaCompressed:
using (var ds = new XZInputStream(
new SubStream(
this.stream,
run.CompOffset,
run.CompLength)))
{
StreamUtilities.ReadExact(ds, this.decompBuffer, 0, toCopy);
}
break;
case RunType.Zeros:
case RunType.Raw:
case RunType.None:
break;
default:
throw new NotImplementedException("Unrecognized run type " + run.Type);
}
this.activeRun = run;
}