/// <summary>
/// This method is called when stream is requested, if you return a stream
/// it will return it to the user else it will keep trying all the other StreamFactorys
/// until one does return a stream.
/// </summary>
/// <param name="path">Path of file or object to create stream to.</param>
/// <param name="mode">Determines how to open or create stream.</param>
/// <returns>A Stream instance or NULL if this factory can't open the given stream.</returns>
protected override Stream Request(object path, StreamMode mode)
{
// if (File.Exists(path.ToString()) == false && moede != StreamMode.Open) return null;
try
{
switch (mode)
{
case StreamMode.Append:
if (Directory.Exists(Path.GetDirectoryName(path.ToString()))) Directory.CreateDirectory(Path.GetDirectoryName(path.ToString()));
if (File.Exists(path.ToString()) == false) File.Create(path.ToString()).Close();
return new FileStream(path.ToString(), FileMode.Append);
case StreamMode.Open:
return new FileStream(path.ToString(), FileMode.Open);
case StreamMode.Truncate:
if (Directory.Exists(Path.GetDirectoryName(path.ToString()))) Directory.CreateDirectory(Path.GetDirectoryName(path.ToString()));
if (File.Exists(path.ToString()) == false) File.Create(path.ToString()).Close();
return new FileStream(path.ToString(), FileMode.Truncate);
}
}
catch (Exception) {}
return null;
}
public Decrypt2Stream(Stream input, int size, uint key, StreamMode streamMode)
{
_input = input;
_size = size;
_streamMode = streamMode;
_key = 278 * key;
_blockKey = key | ((key ^ 25974) << 16);
}
public void InitializeWrite(string sPath)
{
ActiveMode = StreamMode.WriteToDiskStream;
disk_writer = new BinaryWriter(File.Open(sPath, FileMode.Create));
writer_thread = new Thread(writer_thread_func);
writer_thread.Start();
}
/// <summary>
/// This method is called when stream is requested, if you return a stream
/// it will return it to the user else it will keep trying all the other StreamFactorys
/// until one does return a stream.
/// </summary>
/// <param name="path">Path of file or object to create stream to.</param>
/// <param name="mode">Determines how to open or create stream.</param>
/// <returns>A Stream instance or NULL if this factory can't open the given stream.</returns>
protected override Stream Request(object path, StreamMode mode)
{
if (Resources.ResourceManager.ResourceExists(path, true) == false)
{
return(null);
}
return(Resources.ResourceManager.RequestResourceStream(path.ToString()));
}
// workitem 7813 - totally unnecessary
// public override void WriteByte(byte b)
// {
// _buf1[0] = (byte)b;
// // workitem 7159
// if (crc != null)
// crc.SlurpBlock(_buf1, 0, 1);
// Write(_buf1, 0, 1);
// }
public override void Write(byte[] buffer, int offset, int count)
{
// workitem 7159
// calculate the CRC on the unccompressed data (before writing)
if (this.crc != null)
{
this.crc.SlurpBlock(buffer, offset, count);
}
if (this.streamMode == StreamMode.Undefined)
{
this.streamMode = StreamMode.Writer;
}
else if (this.streamMode != StreamMode.Writer)
{
throw new ZlibException("Cannot Write after Reading.");
}
if (count == 0)
{
return;
}
// first reference of z property will initialize the private var _z
this.z.InputBuffer = buffer;
this.z.NextIn = offset;
this.z.AvailableBytesIn = count;
bool done;
do
{
this.z.OutputBuffer = this.WorkingBuffer;
this.z.NextOut = 0;
this.z.AvailableBytesOut = this.workingBuffer.Length;
//int rc = (_wantCompress)
// ? _z.Deflate(_flushMode)
// : _z.Inflate(_flushMode);
int rc = this.z.Inflate(this.FlushMode);
if (rc != ZlibConstants.Z_OK && rc != ZlibConstants.Z_STREAM_END)
{
throw new ZlibException("inflating: " + this.z.Message);
}
this.Stream.Write(this.workingBuffer, 0, this.workingBuffer.Length - this.z.AvailableBytesOut);
done = this.z.AvailableBytesIn == 0 && this.z.AvailableBytesOut != 0;
// If GZIP and de-compress, we're done when 8 bytes remain.
if (this.Flavor == ZlibStreamFlavor.Gzip)
{
done = (this.z.AvailableBytesIn == 8 && this.z.AvailableBytesOut != 0);
}
}while (!done);
}
public void Process(StreamMode mode, StreamData data, Action <byte[], int> callback)
{
if (!_disposed)
{
var request = new AsyncStreamRequest(mode, data, callback);
var task = new StreamTask(GetIdleUnit(), request);
ThreadPool.QueueUserWorkItem(_ => { task.Run(); });
}
}
public static Table Get(string tableName, StreamMode LoadSteam)
{
if (!tableMap.ContainsKey(tableName))
{
Table newTable = GenerateTable(tableName, LoadSteam);
tableMap.Add(tableName, newTable);
}
return(tableMap[tableName]);
}
public override void Write(System.Byte[] buffer, int offset, int count)
{
#if !NETFX_CORE
// workitem 7159
// calculate the CRC on the unccompressed data (before writing)
if (crc != null)
{
crc.SlurpBlock(buffer, offset, count);
}
#endif
if (_streamMode == StreamMode.Undefined)
{
_streamMode = StreamMode.Writer;
}
else if (_streamMode != StreamMode.Writer)
{
throw new ZlibException("Cannot Write after Reading.");
}
if (count == 0)
{
return;
}
// first reference of z property will initialize the private var _z
z.InputBuffer = buffer;
_z.NextIn = offset;
_z.AvailableBytesIn = count;
bool done = false;
do
{
_z.OutputBuffer = workingBuffer;
_z.NextOut = 0;
_z.AvailableBytesOut = _workingBuffer.Length;
int rc = (_wantCompress)
? _z.Deflate(_flushMode)
: _z.Inflate(_flushMode);
if (rc != ZlibConstants.Z_OK && rc != ZlibConstants.Z_STREAM_END)
{
throw new ZlibException((_wantCompress ? "de" : "in") + "flating: " + _z.Message);
}
//if (_workingBuffer.Length - _z.AvailableBytesOut > 0)
_stream.Write(_workingBuffer, 0, _workingBuffer.Length - _z.AvailableBytesOut);
done = _z.AvailableBytesIn == 0 && _z.AvailableBytesOut != 0;
// If GZIP and de-compress, we're done when 8 bytes remain.
if (_flavor == ZlibStreamFlavor.GZIP && !_wantCompress)
{
done = (_z.AvailableBytesIn == 8 && _z.AvailableBytesOut != 0);
}
}while (!done);
}
public QueueStream(Stream stream, StreamMode mode, int bufferSize, BufferManager bufferManager)
{
if (mode == StreamMode.Read)
{
_stream = new ReadStream(stream, bufferSize, bufferManager);
}
else if (mode == StreamMode.Write)
{
_stream = new WriteStream(new CacheStream(stream, QueueStream.BlockSize, bufferManager), bufferSize, bufferManager);
}
}
/// <summary>
/// Makes the specified font and brush to the current graphics objects.
/// </summary>
void RealizeFont(Glyphs glyphs)
{
if (this.streamMode != StreamMode.Text)
{
this.streamMode = StreamMode.Text;
WriteLiteral("BT\n");
// Text matrix is empty after BT
this.graphicsState.realizedTextPosition = new XPoint();
}
this.graphicsState.RealizeFont(glyphs);
}
void ValidStreamMode(StreamMode streamMode)
{
if (_streamMode == StreamMode.Undefined)
{
_streamMode = streamMode;
}
else if (_streamMode != streamMode)
{
throw new ZlibException(streamMode == StreamMode.Reader ? "无法在读取的时候写入。" : "无法在写入时候读取。");
}
}
public Task <int> WriteAsync(byte[] buffer, int offset, int length, StreamMode mode)
{
Utilities.CheckStreamArguments(buffer, offset, length, mode);
int processed = 0;
while (length > 0)
{
Frame frame;
lock (mSyncObject)
{
System.Diagnostics.Debug.Assert(mRunning);
if (mDisposeTask != null)
{
throw new OperationCanceledException();
}
while (mQueue.Count == 0)
{
Monitor.Wait(mSyncObject);
if (mDisposeTask != null)
{
throw new OperationCanceledException();
}
}
frame = mQueue.Peek();
}
var capacity = frame.mEnding - frame.mOffset;
var copySize = Math.Min(capacity, length > Int32.MaxValue ? Int32.MaxValue : (int)length);
Buffer.BlockCopy(buffer, offset, frame.mBuffer, frame.mOffset, copySize);
frame.mOffset += copySize;
offset += copySize;
processed += copySize;
length -= copySize;
if (copySize == capacity || frame.mMode == StreamMode.Partial)
{
frame.mCompletion.SetResult(frame.mOffset - frame.mOrigin);
lock (mSyncObject)
{
System.Diagnostics.Debug.Assert(mRunning);
var other = mQueue.Dequeue();
System.Diagnostics.Debug.Assert(other == frame);
}
}
}
return(Task.FromResult(processed));
}
public Decrypt1Stream(Stream input, int version, int size, byte[] dataHash, uint hashLow, StreamMode streamMode)
{
_input = input;
_version = version;
_size = size;
_hashLow = hashLow;
_streamMode = streamMode;
_seed = BitConverter.ToUInt64(dataHash, (int)(hashLow % 2) * 8);
_seedLow = (uint)_seed & 0xFFFFFFFF;
_seedHigh = (uint)(_seed >> 32);
}
public QueueStream(Stream stream, StreamMode mode, int bufferSize, BufferManager bufferManager)
{
if (mode == StreamMode.Read)
{
_stream = new ReadStream(stream, bufferSize, bufferManager);
}
else if (mode == StreamMode.Write)
{
_stream = new WriteStream(new CacheStream(stream, QueueStream.BlockSize, bufferManager), bufferSize, bufferManager);
}
}
public bool Save(StreamMode SaveMode = StreamMode.AppData)
{
switch (SaveMode)
{
case StreamMode.AppData:
path = (AppDataPath + name + ".csv");
break;
case StreamMode.Resource:
return(false);
}
return(Save(path));
}
internal void OpenStream(string key, StreamMode mode, string group, string subGroup,
DateTime absoluteExpiration, TimeSpan slidingExpiration, CacheDependency dependency,
CacheItemPriority priority)
{
_mode = mode;
_key = key;
_priority = priority;
if (mode == StreamMode.Write)
{
_absExpiration = absoluteExpiration;
_slidingExpiration = slidingExpiration;
_dependency = dependency;
}
if (_mode == StreamMode.Read)
{
_lockHandle = _cacheHandle.OpenStream(key, StreamModes.Read, group, subGroup, absoluteExpiration,
slidingExpiration, dependency, _priority);
}
else if (mode == StreamMode.ReadWithoutLock)
{
string lockHandle = _cacheHandle.OpenStream(key, StreamModes.ReadWithoutLock, group, subGroup,
absoluteExpiration, slidingExpiration, dependency, _priority);
if (lockHandle != null)
{
return;
}
else
{
throw new StreamNotFoundException();
}
}
else
{
_lockHandle = _cacheHandle.OpenStream(key, StreamModes.Write, group, subGroup, absoluteExpiration,
slidingExpiration, dependency, _priority);
}
if (_lockHandle == null)
{
throw new StreamException("An error occurred while opening stream");
}
_length = _cacheHandle.GetStreamLength(key, _lockHandle);
if (_mode == StreamMode.Write)
{
_position = Length;
}
}
void Stream.Write(byte[] A_0, int A_1, int A_2)
{
// This item is obfuscated and can not be translated.
int num = 2;
if (this.class356_0 != null)
{
this.class356_0.method_6(A_0, A_1, A_2);
}
if (this.streamMode_0 == StreamMode.Undefined)
{
this.streamMode_0 = StreamMode.Writer;
}
else if (this.streamMode_0 != StreamMode.Writer)
{
throw new Exception0(BookmarkStart.b("欧䬩䈫䀭弯䘱ᐳ愵䨷匹䠻嬽怿⍁≃㉅ⵇ㡉汋ᱍ㕏㍑こ㽕㙗㵙牛", num));
}
if (A_2 != 0)
{
this.method_2().byte_0 = A_0;
this.class1068_0.int_0 = A_1;
this.class1068_0.int_1 = A_2;
bool flag = false;
while (true)
{
this.class1068_0.byte_1 = this.method_3();
this.class1068_0.int_2 = 0;
this.class1068_0.int_3 = this.byte_0.Length;
if (this.method_1())
{
}
int num2 = this.class1068_0.method_14(this.flushType_0);
if ((num2 != 0) && (num2 != 1))
{
throw new Exception0((this.method_1() ? BookmarkStart.b("䰧伩", num) : BookmarkStart.b("䄧䐩", num)) + BookmarkStart.b("丧䘩䴫娭夯就匳వᠷ", num) + this.class1068_0.string_0);
}
this.stream_0.Write(this.byte_0, 0, this.byte_0.Length - this.class1068_0.int_3);
flag = (this.class1068_0.int_1 == 0) && (this.class1068_0.int_3 != 0);
if ((this.zlibStreamFlavor_0 == ZlibStreamFlavor.GZIP) && !this.method_1())
{
flag = (this.class1068_0.int_1 == 8) && (this.class1068_0.int_3 != 0);
}
if (flag)
{
return;
}
}
}
}
/// <summary>Align the stream's position by a certain page boundry</summary>
/// <param name="alignmentBit">log2 size of the alignment (ie, 1<<bit)</param>
/// <returns>True if any alignment had to be performed, false if otherwise</returns>
public bool AlignToBoundry(int alignmentBit)
{
if (IsReading)
{
return(Reader.AlignToBoundry(alignmentBit));
}
else if (IsWriting)
{
return(Writer.AlignToBoundry(alignmentBit));
}
else
{
throw new Debug.UnreachableException(StreamMode.ToString());
}
}
public FlacStream(string file, StreamMode mode, StreamAccessMode accessMode)
{
FileMode fileMode;
FileAccess fileAccessMode;
switch (mode)
{
case StreamMode.CreateNew:
{
fileMode = FileMode.Create;
break;
}
case StreamMode.OpenExisting:
{
fileMode = FileMode.Open;
break;
}
default:
{
throw new FlacDebugException();
}
}
switch (accessMode)
{
case StreamAccessMode.Read:
case StreamAccessMode.Write:
case StreamAccessMode.Both:
{
fileAccessMode = (FileAccess)accessMode;
break;
}
default:
{
throw new FlacDebugException();
}
}
fileStream_ = new FileStream(file, fileMode, fileAccessMode, FileShare.Read);
if ((accessMode & StreamAccessMode.Read) == StreamAccessMode.Read)
{
reader_ = new FlacStreamReader(fileStream_);
}
if ((accessMode & StreamAccessMode.Write) == StreamAccessMode.Write)
{
writer_ = new FlacStreamWriter(fileStream_);
}
}
public void InitializeRead(string sPath, bool bReadAll = false)
{
if (bReadAll)
{
ActiveMode = StreamMode.InMemoryStream;
}
else
{
ActiveMode = StreamMode.ReadFromDiskStream;
}
disk_reader = new BinaryReader(File.Open(sPath, FileMode.Open));
if (bReadAll)
{
ReadAllFrames();
}
}
public async Task <int> ReadAsync(byte[] buffer, int offset, int length, StreamMode mode)
{
System.Diagnostics.Debug.Assert(mEncoderInput == null);
if (mode == StreamMode.Complete)
{
throw new NotImplementedException();
}
var result = await mSession.ReadInternalAsync(buffer, offset, length, mode).ConfigureAwait(false);
mLength += result;
mChecksum = CRC.Update(mChecksum, buffer, offset, result);
return(result);
}
public Container(string containerName, StreamMode mode)
{
PrimaryTable = SqlStringSanitizer.Sanitize(containerName);
var columns = _codeEdgeColumns;
if (mode == StreamMode.EventStream)
{
columns = columns.Union(_eventStreamCodeEdgeColumns).ToArray();
}
Tables = new Dictionary <string, Table>
{
["Codes"] = new Table($"{PrimaryTable}Codes", columns, _codeEdgeColumns.Select(x => x.Name)),
["Edges"] = new Table($"{PrimaryTable}Edges", columns, _codeEdgeColumns.Select(x => x.Name))
};
}
static void Main(string[] args)
{
int bufferSize = 1024 * 4;
StreamMode mode = StreamMode.FrameworkDefault;
if (args.Length < 1)
{
Proxy.WriteLine("\nError in parameters", ConsoleColor.Red);
Console.WriteLine("usage: HttpProxy {StreamMode} {BufferSize} ");
Console.WriteLine("\nStreamMode is a number from 0-4: FrameworkDefault, FrameworkBuffer, FrameworkCopy, MultiWrite");
Console.WriteLine("BufferSize is in Bytes\n");
Console.WriteLine("Example\n");
Console.WriteLine("HttpProxy 0");
Console.WriteLine("HttpProxy 1 4096");
Console.WriteLine("HttpProxy 3 4096\n");
return;
}
// Get Stream Mode
int modeInteger;
if (int.TryParse(args[0], out modeInteger))
{
mode = (StreamMode)modeInteger;
}
// Get BufferSize
if (mode != StreamMode.FrameworkDefault)
{
if (args.Length > 1)
{
bufferSize = int.Parse(args[1]);
}
}
var listener = new Proxy(mode, bufferSize);
Console.BackgroundColor = ConsoleColor.DarkRed;
Console.WriteLine("Press Enter to exit");
Console.BackgroundColor = ConsoleColor.Black;
Console.ReadLine();
listener.Shutdown();
}
public Stream OpenStream(Uri uri, StreamMode mode, StreamAccess access, StreamShare share, int bufferSize)
{
var fmode = FileMode.Append;
switch (mode)
{
case StreamMode.Append: fmode = FileMode.Append; break;
case StreamMode.Open: fmode = FileMode.Open; break;
case StreamMode.Truncate: fmode = FileMode.Truncate; break;
}
var filePath = PathFromUri(uri);
return(OpenStream(filePath, fmode, access, share, bufferSize));
}
public override void Write(byte[] buffer, int offset, int count)
{
if (crc != null)
{
crc.SlurpBlock(buffer, offset, count);
}
if (_streamMode == StreamMode.Undefined)
{
_streamMode = StreamMode.Writer;
}
else if (_streamMode != 0)
{
throw new ZlibException("Cannot Write after Reading.");
}
if (count == 0)
{
return;
}
z.InputBuffer = buffer;
_z.NextIn = offset;
_z.AvailableBytesIn = count;
bool flag = false;
while (true)
{
_z.OutputBuffer = workingBuffer;
_z.NextOut = 0;
_z.AvailableBytesOut = _workingBuffer.Length;
int num = _wantCompress ? _z.Deflate(_flushMode) : _z.Inflate(_flushMode);
if (num != 0 && num != 1)
{
break;
}
_stream.Write(_workingBuffer, 0, _workingBuffer.Length - _z.AvailableBytesOut);
flag = (_z.AvailableBytesIn == 0 && _z.AvailableBytesOut != 0);
if (_flavor == ZlibStreamFlavor.GZIP && !_wantCompress)
{
flag = (_z.AvailableBytesIn == 8 && _z.AvailableBytesOut != 0);
}
if (flag)
{
return;
}
}
throw new ZlibException((_wantCompress ? "de" : "in") + "flating: " + _z.Message);
}
public override void Write(byte[] buffer, int offset, int count)
{
_crc?.SlurpBlock(buffer, offset, count);
if (_streamMode == StreamMode.Undefined)
{
_streamMode = StreamMode.Writer;
}
else if (_streamMode != StreamMode.Writer)
{
throw new ZlibException("Cannot Write after Reading.");
}
if (count == 0)
{
return;
}
z.InputBuffer = buffer;
Z.NextIn = offset;
Z.AvailableBytesIn = count;
bool done;
do
{
Z.OutputBuffer = WorkingBuffer;
Z.NextOut = 0;
Z.AvailableBytesOut = _workingBuffer.Length;
var rc = WantCompress
? Z.Deflate(FlushMode)
: Z.Inflate(FlushMode);
if (rc != ZlibConstants.ZOk && rc != ZlibConstants.ZStreamEnd)
{
throw new ZlibException((WantCompress ? "de" : "in") + "flating: " + Z.Message);
}
Stream.Write(_workingBuffer, 0, _workingBuffer.Length - Z.AvailableBytesOut);
done = Z.AvailableBytesIn == 0 && Z.AvailableBytesOut != 0;
if (Flavor == ZlibStreamFlavor.Gzip && !WantCompress)
{
done = Z.AvailableBytesIn == 8 && Z.AvailableBytesOut != 0;
}
} while (!done);
}
public ZlibBaseStream(Stream stream, CompressionMode compressionMode, CompressionLevel level, ZlibStreamFlavor flavor, bool leaveOpen, int windowBits)
{
this._streamMode = StreamMode.Undefined;
this._bufferSize = 0x4000;
this._buf1 = new byte[1];
this._flushMode = FlushType.None;
this._stream = stream;
this._leaveOpen = leaveOpen;
this._compressionMode = compressionMode;
this._flavor = flavor;
this._level = level;
this.windowBitsMax = windowBits;
if (flavor == ZlibStreamFlavor.GZIP)
{
this.crc = new CRC32();
}
}
public async Task <int> WriteAsync(byte[] buffer, int offset, int length, StreamMode mode)
{
System.Diagnostics.Debug.Assert(mEncoderOutput == null);
System.Diagnostics.Debug.Assert(!mCompletionTask.Task.IsCompleted);
// TODO: calculate checksum asynchronously?
if (mCalculateChecksum)
{
for (int i = 0; i < length; i++)
{
mChecksum = CRC.Update(mChecksum, buffer[offset + i]);
}
}
await mStream.WriteAsync(buffer, offset, length).ConfigureAwait(false);
return(length);
}
Task <int> IStreamReader.ReadAsync(byte[] buffer, int offset, int length, StreamMode mode)
{
Utilities.DebugCheckStreamArguments(buffer, offset, length, mode);
lock (this)
{
int total = 0;
while (length > 0)
{
while (mBuffer == null)
{
if (mComplete)
{
return(Task.FromResult(total));
}
Monitor.Wait(this);
}
int copied = Math.Min(length, mLength);
System.Diagnostics.Debug.Assert(copied > 0);
Buffer.BlockCopy(mBuffer, mOffset, buffer, offset, copied);
mOffset += copied;
mLength -= copied;
offset += copied;
length -= copied;
total += copied;
if (mLength == 0)
{
mBuffer = null;
Monitor.PulseAll(this);
}
if (mode == StreamMode.Partial)
{
break;
}
}
return(Task.FromResult(total));
}
}
/// <summary>
/// This method is called when a stream is requested, it illiterates through all
/// the registered StreamFactory instances to see if there is one capable of opening the
/// given stream.
/// </summary>
/// <param name="path">Path of file or object to create stream to.</param>
/// <param name="mode">Determines how to open or create stream.</param>
/// <returns>A Stream instance or NULL if unable to find a factory to open this stream.</returns>
public static Stream RequestStream(object path, StreamMode mode)
{
if (path.ToString().ToLower().StartsWith("pak@"))
{
path = path.ToString().Substring(4); // Legacy support.
}
// If this is already a stream then copy its data to a new stream
// that we can read from.
if (path as Stream != null)
{
Stream stream = (path as Stream);
MemoryStream memStream = new MemoryStream();
byte[] data = new byte[stream.Length];
stream.Read(data, 0, (int)stream.Length);
stream.Position = 0;
memStream.Write(data, 0, data.Length);
memStream.Position = 0;
return(memStream);
}
foreach (StreamFactory factory in _loaderList)
{
#if RELEASE || PROFILE
try
{
#endif
Stream stream = factory.Request(path, mode);
if (stream != null)
{
return(stream);
}
#if RELEASE || PROFILE
}
catch (System.IO.IOException)
{
// Don't do anything here, just here to catch any errors that may occur.
}
#endif
}
return(null);
}
public virtual IEnumerable <PostgreSqlConnectorCommand> BuildCreateContainerSql(
string tableName,
IEnumerable <ConnectionDataType> columns,
IEnumerable <string> keys,
string context,
StreamMode streamMode,
ILogger logger)
{
if (string.IsNullOrWhiteSpace(tableName))
{
throw new InvalidOperationException("The tableName must be provided.");
}
if (columns == null)
{
throw new InvalidOperationException("The data to specify columns must be provided.");
}
var builder = new StringBuilder();
var trimmedColumns = columns.Where(x => x.Name != "Codes").ToList();
builder.AppendLine($"CREATE TABLE IF NOT EXISTS {SqlStringSanitizer.Sanitize(tableName)}(");
var index = 0;
var count = trimmedColumns.Count;
foreach (var column in trimmedColumns)
{
builder.AppendLine($"{SqlStringSanitizer.Sanitize(column.Name)} text NULL " +
// TODO: appoint PK to valid column for StreamMode Event
$"{(column.Name.ToLower().Equals("originentitycode") && context == "Data" && streamMode == StreamMode.Sync ? "PRIMARY KEY" : "")}" +
$"{(index < count - 1 ? "," : "")} ");
index++;
}
builder.AppendLine(");");
return(new[] { new PostgreSqlConnectorCommand {
Text = builder.ToString()
} });
}
/// <summary>
/// This method is called when stream is requested, if you return a stream
/// it will return it to the user else it will keep trying all the other StreamFactorys
/// until one does return a stream.
/// </summary>
/// <param name="path">Path of file or object to create stream to.</param>
/// <param name="mode">Determines how to open or create stream.</param>
/// <returns>A Stream instance or NULL if this factory can't open the given stream.</returns>
protected override Stream Request(object path,StreamMode mode)
{
if (path.ToString().ToLower().Substring(0, 4) != "mem@") return null;
// Check if we have been handed a capacity as well.
if (path.ToString().Length > 4)
{
string capacityStr = path.ToString().Substring(4, path.ToString().Length - 4);
int capacity = 0;
if (int.TryParse(capacityStr, out capacity) == true)
return new MemoryStream(capacity);
else
return new MemoryStream();
}
else
{
return new MemoryStream();
}
}
/// <summary>
/// Initializes a new instance of the <see cref="BizTalkMessagePartStream"/> class.
/// </summary>
/// <param name="stream">The stream from which to read (or write if in compression mode).</param>
/// <param name="mode">The compression mode.</param>
public BizTalkMessagePartStream(Stream stream, StreamMode mode)
{
this.innerStream = stream;
this.streamMode = mode;
if (mode == StreamMode.Write)
{
this.writeStream = new BizTalkBlockStream(this.innerStream);
}
else if (mode == StreamMode.Read)
{
this.reader = new BizTalkBlockReader(stream);
this.readBuffer = new MemoryStream();
}
else
{
throw new ArgumentException("Unknown stream mode specified: " + mode, "mode");
}
}
public override void Write(byte[] buffer, int offset, int count)
{
if (this.crc != null)
{
this.crc.SlurpBlock(buffer, offset, count);
}
if (this._streamMode == StreamMode.Undefined)
{
this._streamMode = StreamMode.Writer;
}
else if (this._streamMode != StreamMode.Writer)
{
throw new ZlibException("Cannot Write after Reading.");
}
if (count != 0)
{
this.z.InputBuffer = buffer;
this._z.NextIn = offset;
this._z.AvailableBytesIn = count;
bool flag = false;
while (true)
{
this._z.OutputBuffer = this.workingBuffer;
this._z.NextOut = 0;
this._z.AvailableBytesOut = this._workingBuffer.Length;
int num = !this._wantCompress ? this._z.Inflate(this._flushMode) : this._z.Deflate(this._flushMode);
if ((num != 0) && (num != 1))
{
throw new ZlibException((!this._wantCompress ? "in" : "de") + "flating: " + this._z.Message);
}
this._stream.Write(this._workingBuffer, 0, this._workingBuffer.Length - this._z.AvailableBytesOut);
flag = (this._z.AvailableBytesIn == 0) && (this._z.AvailableBytesOut != 0);
if ((this._flavor == ZlibStreamFlavor.GZIP) && !this._wantCompress)
{
flag = (this._z.AvailableBytesIn == 8) && (this._z.AvailableBytesOut != 0);
}
if (flag)
{
return;
}
}
}
}
/// <summary>
/// Initializes a new instance of the <see cref="BizTalkMessagePartStream"/> class.
/// </summary>
/// <param name="stream">The stream from which to read (or write if in compression mode).</param>
/// <param name="mode">The compression mode.</param>
public BizTalkMessagePartStream(Stream stream, StreamMode mode)
{
this.innerStream = stream;
this.streamMode = mode;
if (mode == StreamMode.Write)
{
this.writeStream = new BizTalkBlockStream(this.innerStream);
}
else if (mode == StreamMode.Read)
{
this.reader = new BizTalkBlockReader(stream);
this.readBuffer = new MemoryStream();
}
else
{
throw new ArgumentException("Unknown stream mode specified: " + mode, "mode");
}
}
Task<int> IStreamReader.ReadAsync(byte[] buffer, int offset, int length, StreamMode mode)
{
Utilities.DebugCheckStreamArguments(buffer, offset, length, mode);
lock (this)
{
int total = 0;
while (length > 0)
{
while (mBuffer == null)
{
if (mComplete)
return Task.FromResult(total);
Monitor.Wait(this);
}
int copied = Math.Min(length, mLength);
System.Diagnostics.Debug.Assert(copied > 0);
Buffer.BlockCopy(mBuffer, mOffset, buffer, offset, copied);
mOffset += copied;
mLength -= copied;
offset += copied;
length -= copied;
total += copied;
if (mLength == 0)
{
mBuffer = null;
Monitor.PulseAll(this);
}
if (mode == StreamMode.Partial)
break;
}
return Task.FromResult(total);
}
}
public Task<int> WriteAsync(byte[] buffer, int offset, int length, StreamMode mode)
{
Utilities.CheckStreamArguments(buffer, offset, length, mode);
int processed = 0;
while (length > 0)
{
Frame frame;
lock (mSyncObject)
{
System.Diagnostics.Debug.Assert(mRunning);
if (mDisposeTask != null)
throw new OperationCanceledException();
while (mQueue.Count == 0)
{
Monitor.Wait(mSyncObject);
if (mDisposeTask != null)
throw new OperationCanceledException();
}
frame = mQueue.Peek();
}
var capacity = frame.mEnding - frame.mOffset;
var copySize = Math.Min(capacity, length > Int32.MaxValue ? Int32.MaxValue : (int)length);
Buffer.BlockCopy(buffer, offset, frame.mBuffer, frame.mOffset, copySize);
frame.mOffset += copySize;
offset += copySize;
processed += copySize;
length -= copySize;
if (copySize == capacity || frame.mMode == StreamMode.Partial)
{
frame.mCompletion.SetResult(frame.mOffset - frame.mOrigin);
lock (mSyncObject)
{
System.Diagnostics.Debug.Assert(mRunning);
var other = mQueue.Dequeue();
System.Diagnostics.Debug.Assert(other == frame);
}
}
}
return Task.FromResult(processed);
}
public override int Read( byte [] buffer, int offset, int count )
{
if ( streamMode == StreamMode.Undefined )
{
if ( !this.stream.CanRead ) throw new CompressionProcessException ( "The stream is not readable." );
streamMode = StreamMode.Reader;
z.AvailableBytesIn = 0;
}
if ( streamMode != StreamMode.Reader )
throw new CompressionProcessException ( "Cannot Read after Writing." );
if ( count == 0 ) return 0;
if ( nomoreinput && _wantCompress ) return 0;
if ( buffer == null ) throw new ArgumentNullException ( "buffer" );
if ( count < 0 ) throw new ArgumentOutOfRangeException ( "count" );
if ( offset < buffer.GetLowerBound ( 0 ) ) throw new ArgumentOutOfRangeException ( "offset" );
if ( ( offset + count ) > buffer.GetLength ( 0 ) ) throw new ArgumentOutOfRangeException ( "count" );
int rc = 0;
_z.OutputBuffer = buffer;
_z.NextOut = offset;
_z.AvailableBytesOut = count;
_z.InputBuffer = workingBuffer;
do
{
if ( ( _z.AvailableBytesIn == 0 ) && ( !nomoreinput ) )
{
_z.NextIn = 0;
_z.AvailableBytesIn = stream.Read ( _workingBuffer, 0, _workingBuffer.Length );
if ( _z.AvailableBytesIn == 0 )
nomoreinput = true;
}
rc = ( _wantCompress )
? _z.Deflate ( flushMode )
: _z.Inflate ( flushMode );
if ( nomoreinput && ( rc == ZlibConstants.Z_BUF_ERROR ) )
return 0;
if ( rc != ZlibConstants.Z_OK && rc != ZlibConstants.Z_STREAM_END )
throw new CompressionProcessException ( String.Format ( "{0}flating: rc={1} msg={2}", ( _wantCompress ? "de" : "in" ), rc, _z.Message ) );
if ( ( nomoreinput || rc == ZlibConstants.Z_STREAM_END ) && ( _z.AvailableBytesOut == count ) )
break;
}
while ( _z.AvailableBytesOut > 0 && !nomoreinput && rc == ZlibConstants.Z_OK );
if ( _z.AvailableBytesOut > 0 )
{
if ( rc == ZlibConstants.Z_OK && _z.AvailableBytesIn == 0 )
{
}
if ( nomoreinput )
{
if ( _wantCompress )
{
rc = _z.Deflate ( FlushType.Finish );
if ( rc != ZlibConstants.Z_OK && rc != ZlibConstants.Z_STREAM_END )
throw new CompressionProcessException ( String.Format ( "Deflating: rc={0} msg={1}", rc, _z.Message ) );
}
}
}
rc = ( count - _z.AvailableBytesOut );
return rc;
}
public override void Write(System.Byte[] buffer, int offset, int count)
{
// workitem 7159
// calculate the CRC on the unccompressed data (before writing)
if (crc != null)
crc.SlurpBlock(buffer, offset, count);
if (_streamMode == StreamMode.Undefined)
_streamMode = StreamMode.Writer;
else if (_streamMode != StreamMode.Writer)
throw new ZlibException("Cannot Write after Reading.");
if (count == 0)
return;
// first reference of z property will initialize the private var _z
z.InputBuffer = buffer;
_z.NextIn = offset;
_z.AvailableBytesIn = count;
bool done = false;
do
{
_z.OutputBuffer = workingBuffer;
_z.NextOut = 0;
_z.AvailableBytesOut = _workingBuffer.Length;
int rc = (_wantCompress)
? _z.Deflate(_flushMode)
: _z.Inflate(_flushMode);
if (rc != ZlibConstants.Z_OK && rc != ZlibConstants.Z_STREAM_END)
throw new ZlibException((_wantCompress ? "de" : "in") + "flating: " + _z.Message);
//if (_workingBuffer.Length - _z.AvailableBytesOut > 0)
_stream.Write(_workingBuffer, 0, _workingBuffer.Length - _z.AvailableBytesOut);
done = _z.AvailableBytesIn == 0 && _z.AvailableBytesOut != 0;
// If GZIP and de-compress, we're done when 8 bytes remain.
if (_flavor == ZlibStreamFlavor.GZIP && !_wantCompress)
done = (_z.AvailableBytesIn == 8 && _z.AvailableBytesOut != 0);
}
while (!done);
}
public override System.Int32 Read(System.Byte[] buffer, System.Int32 offset, System.Int32 count)
{
// According to MS documentation, any implementation of the IO.Stream.Read function must:
// (a) throw an exception if offset & count reference an invalid part of the buffer,
// or if count < 0, or if buffer is null
// (b) return 0 only upon EOF, or if count = 0
// (c) if not EOF, then return at least 1 byte, up to <count> bytes
if (_streamMode == StreamMode.Undefined)
{
if (!this._stream.CanRead) throw new ZlibException("The stream is not readable.");
// for the first read, set up some controls.
_streamMode = StreamMode.Reader;
// (The first reference to _z goes through the private accessor which
// may initialize it.)
z.AvailableBytesIn = 0;
if (_flavor == ZlibStreamFlavor.GZIP)
{
_gzipHeaderByteCount = _ReadAndValidateGzipHeader();
// workitem 8501: handle edge case (decompress empty stream)
if (_gzipHeaderByteCount == 0)
return 0;
}
}
if (_streamMode != StreamMode.Reader)
throw new ZlibException("Cannot Read after Writing.");
if (count == 0) return 0;
// workitem 10562
// this quits too early if the input buffer has been consumed but
// there's still output which hasn't been created yet (e.g. block
// data for tables / tree, or the trailing adler32 data). we
// need to wait for a Z_STREAM_END from Deflate instead.
//if (nomoreinput && _wantCompress) return 0; // workitem 8557
if (buffer == null) throw new ArgumentNullException("buffer");
if (count < 0) throw new ArgumentOutOfRangeException("count");
if (offset < buffer.GetLowerBound(0)) throw new ArgumentOutOfRangeException("offset");
if ((offset + count) > buffer.GetLength(0)) throw new ArgumentOutOfRangeException("count");
int rc = 0;
// set up the output of the deflate/inflate codec:
_z.OutputBuffer = buffer;
_z.NextOut = offset;
_z.AvailableBytesOut = count;
// This is necessary in case _workingBuffer has been resized. (new byte[])
// (The first reference to _workingBuffer goes through the private accessor which
// may initialize it.)
_z.InputBuffer = workingBuffer;
do
{
// need data in _workingBuffer in order to deflate/inflate. Here, we check if we have any.
if ((_z.AvailableBytesIn == 0) && (!nomoreinput))
{
// No data available, so try to Read data from the captive stream.
_z.NextIn = 0;
_z.AvailableBytesIn = _stream.Read(_workingBuffer, 0, _workingBuffer.Length);
if (_z.AvailableBytesIn == 0)
nomoreinput = true;
}
// workitem 10562
// if we've consumed all the input then we need to generate any
// remaining block data and checksums and put them in the pending array
if (nomoreinput) _flushMode = FlushType.Finish;
// we have data in InputBuffer; now compress or decompress as appropriate
rc = (_wantCompress)
? _z.Deflate(_flushMode)
: _z.Inflate(_flushMode);
if (nomoreinput && (rc == ZlibConstants.Z_BUF_ERROR))
return 0;
if (rc != ZlibConstants.Z_OK && rc != ZlibConstants.Z_STREAM_END)
throw new ZlibException(String.Format("{0}flating: rc={1} msg={2}", (_wantCompress ? "de" : "in"), rc, _z.Message));
if ((nomoreinput || rc == ZlibConstants.Z_STREAM_END) && (_z.AvailableBytesOut == count))
{
// workitem 10562
// we've genuinely reached the end of the output stream now,
// including any block data and adler32 which appears after
// the compressed input data. we don't have any more bytes
// to return so we can stop processing
return 0; // nothing more to read
};
}
//while (_z.AvailableBytesOut == count && rc == ZlibConstants.Z_OK);
//while (_z.AvailableBytesOut > 0 && !nomoreinput && rc == ZlibConstants.Z_OK);
while (_z.AvailableBytesOut > 0 && rc == ZlibConstants.Z_OK);
// workitem 10562
// the following is no longer required as we now call _z.Deflate
// in the main loop above instead
//// workitem 8557
//// is there more room in output?
//if (_z.AvailableBytesOut > 0)
//{
// if (rc == ZlibConstants.Z_OK && _z.AvailableBytesIn == 0)
// {
// // deferred
// }
//
// // are we completely done reading?
// if (nomoreinput)
// {
// // and in compression?
// if (_wantCompress)
// {
// // no more input data available; therefore we flush to
// // try to complete the read
// rc = _z.Deflate(FlushType.Finish);
//
// if (rc != ZlibConstants.Z_OK && rc != ZlibConstants.Z_STREAM_END)
// throw new ZlibException(String.Format("Deflating: rc={0} msg={1}", rc, _z.Message));
// }
// }
//}
rc = (count - _z.AvailableBytesOut);
// calculate CRC after reading
if (crc != null)
crc.SlurpBlock(buffer, offset, rc);
return rc;
}
public Task<int> WriteAsync(byte[] buffer, int offset, int length, StreamMode mode)
{
if (buffer == null)
throw new ArgumentNullException(nameof(buffer));
if (offset < 0 || offset > buffer.Length)
throw new ArgumentOutOfRangeException(nameof(offset));
if (length < 0 || length > buffer.Length - offset)
throw new ArgumentOutOfRangeException(nameof(length));
var frame = new Frame();
frame.mBuffer = buffer;
frame.mOrigin = offset;
frame.mOffset = offset;
frame.mEnding = offset + length;
lock (mSyncObject)
{
if (mDisposeTask != null)
throw new ObjectDisposedException(null);
if (mCompleted)
throw new InvalidOperationException();
mQueue.Enqueue(frame);
Monitor.PulseAll(mSyncObject);
}
return frame.mCompletion.Task;
}
/// <param name="buffer"></param><param name="offset"></param> <param name="count"></param><exception cref = "ZlibException"></exception><exception cref = "ZlibException"></exception>
public override void Write(byte[] buffer, int offset, int count)
{
// workitem 7159
// calculate the CRC on the unccompressed data (before writing)
if (this.crc != null)
{
this.crc.SlurpBlock(buffer, offset, count);
}
if (this.Mode == StreamMode.Undefined)
{
this.Mode = StreamMode.Writer;
}
else if (this.Mode != StreamMode.Writer)
{
throw new ZlibException("Cannot Write after Reading.");
}
if (count == 0)
{
return;
}
// first reference of z property will initialize the private var _z
this.Z.InputBuffer = buffer;
this.ZlibCodec.NextIn = offset;
this.ZlibCodec.AvailableBytesIn = count;
bool done;
do
{
this.ZlibCodec.OutputBuffer = this.WorkingBuffer;
this.ZlibCodec.NextOut = 0;
this.ZlibCodec.AvailableBytesOut = this.workBuffer.Length;
int rc = this.WantCompress ? this.ZlibCodec.Deflate(this.flushMode) : this.ZlibCodec.Inflate();
if (rc != ZlibConstants.Zok && rc != ZlibConstants.ZStreamEnd)
{
throw new ZlibException((this.WantCompress ? "de" : "in") + "flating: " + this.ZlibCodec.Message);
}
// if (_workingBuffer.Length - _z.AvailableBytesOut > 0)
this.Stream.Write(this.workBuffer, 0, this.workBuffer.Length - this.ZlibCodec.AvailableBytesOut);
done = this.ZlibCodec.AvailableBytesIn == 0 && this.ZlibCodec.AvailableBytesOut != 0;
// If GZIP and de-compress, we're done when 8 bytes remain.
if (this.flavor == ZlibStreamFlavor.Gzip && !this.WantCompress)
{
done = this.ZlibCodec.AvailableBytesIn == 8 && this.ZlibCodec.AvailableBytesOut != 0;
}
}
while (!done);
}
/// <summary>
/// Makes the specified font and brush to the current graphics objects.
/// </summary>
void RealizeFont(Glyphs glyphs)
{
if (this.streamMode != StreamMode.Text)
{
this.streamMode = StreamMode.Text;
WriteLiteral("BT\n");
// Text matrix is empty after BT
this.graphicsState.realizedTextPosition = new XPoint();
}
this.graphicsState.RealizeFont(glyphs);
}
public async Task<int> WriteAsync(byte[] buffer, int offset, int count, StreamMode mode)
{
System.Diagnostics.Debug.Assert(mEncoderOutputToConnectionInput == null);
System.Diagnostics.Debug.Assert(buffer != null);
System.Diagnostics.Debug.Assert(0 <= offset && offset < buffer.Length);
System.Diagnostics.Debug.Assert(0 < count && count <= buffer.Length - offset);
if (mConnectionOutputToEncoderInput != null)
{
var written = await mConnectionOutputToEncoderInput.WriteAsync(buffer, offset, count, mode);
mTotalLength += written;
return written;
}
int result = 0;
do
{
lock (this)
{
while (mBuffer == null)
Monitor.Wait(this);
var written = Math.Min(count, mEnding - mOffset);
Buffer.BlockCopy(buffer, offset, mBuffer, mOffset, written);
mTotalLength += written;
result += written;
offset += written;
count -= written;
mBuffer = null;
mResult.SetResult(written);
}
}
while (mode == StreamMode.Complete && count > 0);
return result;
}
internal async Task<int> ReadInternalAsync(byte[] buffer, int offset, int length, StreamMode mode)
{
Utilities.DebugCheckStreamArguments(buffer, offset, length, mode);
Stream stream;
lock (mLockObject)
{
while (mPendingStream == null)
{
if (mComplete)
{
mCompleteAck = true;
Monitor.PulseAll(mLockObject);
return 0;
}
Monitor.Wait(mLockObject);
}
stream = mPendingStream;
}
int result = 0;
for (;;)
{
var fetched = await stream.ReadAsync(buffer, offset, length).ConfigureAwait(false);
if (fetched < 0 || fetched > length)
throw new InvalidOperationException("Source stream violated stream contract.");
result += fetched;
offset += fetched;
length -= fetched;
mResultLength += fetched; // could be interlocked but doesn't need to be since we are currently 'owning' the stream (and also consider ourselves 'owning' this counter)
if (fetched > 0)
{
if (mode == StreamMode.Partial || length == 0)
return result;
}
else
{
lock (mLockObject)
{
if (mPendingStream != stream)
throw new InternalFailureException();
mPendingStream = null;
Monitor.PulseAll(mLockObject);
while (mPendingStream == null)
{
if (mComplete)
{
mCompleteAck = true;
Monitor.PulseAll(mLockObject);
return result;
}
Monitor.Wait(mLockObject);
}
stream = mPendingStream;
}
}
}
}
public async Task<int> ReadAsync(byte[] buffer, int offset, int length, StreamMode mode)
{
System.Diagnostics.Debug.Assert(mEncoderInput == null);
if (mode == StreamMode.Complete)
throw new NotImplementedException();
var result = await mSession.ReadInternalAsync(buffer, offset, length, mode).ConfigureAwait(false);
mLength += result;
mChecksum = CRC.Update(mChecksum, buffer, offset, result);
return result;
}
Task<int> IStreamWriter.WriteAsync(byte[] buffer, int offset, int length, StreamMode mode)
{
Utilities.DebugCheckStreamArguments(buffer, offset, length, mode);
lock (this)
{
System.Diagnostics.Debug.Assert(!mComplete);
while (mBuffer != null)
{
Monitor.Wait(this);
System.Diagnostics.Debug.Assert(!mComplete);
}
mBuffer = buffer;
mOffset = offset;
mLength = length;
Monitor.PulseAll(this);
while (mBuffer != null)
{
Monitor.Wait(this);
System.Diagnostics.Debug.Assert(!mComplete);
System.Diagnostics.Debug.Assert(mBuffer == null || mBuffer == buffer);
if (mode == StreamMode.Partial && mBuffer != null && mLength < length)
{
mBuffer = null;
Monitor.PulseAll(this);
return Task.FromResult(length - mLength);
}
}
return Task.FromResult(length);
}
}
/// <summary>
/// Makes the specified font and brush to the current graphics objects.
/// </summary>
void Realize(XFont font, XBrush brush, int renderMode)
{
BeginPage();
RealizeTransform();
if (this.streamMode != StreamMode.Text)
{
this.streamMode = StreamMode.Text;
this.content.Append("BT\n");
// Text matrix is empty after BT
this.gfxState.realizedTextPosition = new XPoint();
}
this.gfxState.RealizeFont(font, brush, renderMode);
}
/// <summary>
/// Read output data from the decoder. You should not use the specified region of the buffer until the returned task completes.
/// </summary>
/// <param name="buffer">The buffer into which output data should be written.</param>
/// <param name="offset">The offset at which output data should be written.</param>
/// <param name="length">The maximum number of bytes which should be written.</param>
/// <param name="mode">
/// Specifies whether to wait until the whole output buffer has been filled,
/// or wether to return as soon as some data is available.
/// </param>
/// <returns>A task which, when completed, tells you how much data has been read.</returns>
public Task<int> ReadOutputAsync(byte[] buffer, int offset, int length, StreamMode mode)
{
if (buffer == null)
throw new ArgumentNullException(nameof(buffer));
if (offset < 0 || offset > buffer.Length)
throw new ArgumentOutOfRangeException(nameof(offset));
if (length < 0 || length > buffer.Length - offset)
throw new ArgumentOutOfRangeException(nameof(length));
if (mode != StreamMode.Complete && mode != StreamMode.Partial)
throw new ArgumentOutOfRangeException(nameof(mode));
var frame = new OutputFrame();
frame.mBuffer = buffer;
frame.mOrigin = offset;
frame.mOffset = offset;
frame.mEnding = offset + length;
frame.mMode = mode;
PushOutputFrame(frame);
return frame.mCompletion.Task;
}
public Task<int> ReadAsync(byte[] buffer, int offset, int count, StreamMode mode)
{
System.Diagnostics.Debug.Assert(mConnectionOutputToEncoderInput == null);
System.Diagnostics.Debug.Assert(buffer != null);
System.Diagnostics.Debug.Assert(0 <= offset && offset < buffer.Length);
System.Diagnostics.Debug.Assert(0 < count && count <= buffer.Length - offset);
if (mEncoderOutputToConnectionInput != null)
return mEncoderOutputToConnectionInput.ReadAsync(buffer, offset, count, mode);
lock (this)
{
// Multiple outstanding ReadAsync calls are not allowed.
if (mBuffer != null)
throw new InternalFailureException();
if (mComplete)
return Task.FromResult(0);
mBuffer = buffer;
mOffset = offset;
mEnding = offset + count;
// CompletionSource must be async so we can complete it from within the lock.
// If we move the completion outside the lock we may be able to do inline completion?
mResult = AsyncTaskCompletionSource<int>.Create();
Monitor.PulseAll(this);
return mResult.Task;
}
}
/// <param name="buffer"></param><param name="offset"></param> <param name="count"></param><exception cref = "ArgumentNullException"></exception>
/// <exception cref = "ArgumentOutOfRangeException"></exception><exception cref = "ArgumentOutOfRangeException"></exception> <exception cref = "ArgumentOutOfRangeException"></exception><returns></returns>
public override int Read(byte[] buffer, int offset, int count)
{
// According to MS documentation, any implementation of the IO.Stream.Read function must: (a) throw an
// exception if offset & count reference an invalid part of the buffer, or if count < 0, or if buffer is
// null (b) return 0 only upon EOF, or if count = 0 (c) if not EOF, then return at least 1 byte, up to
// <count> bytes
if (this.Mode == StreamMode.Undefined)
{
if (!this.Stream.CanRead)
{
throw new ZlibException("The stream is not readable.");
}
// for the first read, set up some controls.
this.Mode = StreamMode.Reader;
// (The first reference to _z goes through the private accessor which may initialize it.)
this.Z.AvailableBytesIn = 0;
if (this.flavor == ZlibStreamFlavor.Gzip)
{
this.GzipHeaderByteCount = this.ReadAndValidateGzipHeader();
// workitem 8501: handle edge case (decompress empty stream)
if (this.GzipHeaderByteCount == 0)
{
return 0;
}
}
}
if (this.Mode != StreamMode.Reader)
{
throw new ZlibException("Cannot Read after Writing.");
}
if (count == 0)
{
return 0;
}
if (this.nomoreinput && this.WantCompress)
{
return 0; // workitem 8557
}
if (buffer == null)
{
throw new ArgumentNullException("buffer");
}
if (count < 0)
{
throw new ArgumentOutOfRangeException("count");
}
if (offset < buffer.GetLowerBound(0))
{
throw new ArgumentOutOfRangeException("offset");
}
if ((offset + count) > buffer.GetLength(0))
{
throw new ArgumentOutOfRangeException("count");
}
int rc;
// set up the output of the deflate/inflate codec:
this.ZlibCodec.OutputBuffer = buffer;
this.ZlibCodec.NextOut = offset;
this.ZlibCodec.AvailableBytesOut = count;
// This is necessary in case _workingBuffer has been resized. (new byte[]) (The first reference to
// _workingBuffer goes through the private accessor which may initialize it.)
this.ZlibCodec.InputBuffer = this.WorkingBuffer;
do
{
// need data in _workingBuffer in order to deflate/inflate. Here, we check if we have any.
if ((this.ZlibCodec.AvailableBytesIn == 0) && (!this.nomoreinput))
{
// No data available, so try to Read data from the captive stream.
this.ZlibCodec.NextIn = 0;
this.ZlibCodec.AvailableBytesIn = this.Stream.Read(this.workBuffer, 0, this.workBuffer.Length);
if (this.ZlibCodec.AvailableBytesIn == 0)
{
this.nomoreinput = true;
}
}
// we have data in InputBuffer; now compress or decompress as appropriate
rc = this.WantCompress ? this.ZlibCodec.Deflate(this.flushMode) : this.ZlibCodec.Inflate();
if (this.nomoreinput && (rc == ZlibConstants.ZBufError))
{
return 0;
}
if (rc != ZlibConstants.Zok && rc != ZlibConstants.ZStreamEnd)
{
throw new ZlibException(
string.Format(
CultureInfo.InvariantCulture,
"{0}flating: rc={1} msg={2}",
this.WantCompress ? "de" : "in",
rc,
this.ZlibCodec.Message));
}
if ((this.nomoreinput || rc == ZlibConstants.ZStreamEnd) && (this.ZlibCodec.AvailableBytesOut == count))
{
break; // nothing more to read
}
}
while (this.ZlibCodec.AvailableBytesOut > 0 && !this.nomoreinput && rc == ZlibConstants.Zok);
// workitem 8557 is there more room in output?
if (this.ZlibCodec.AvailableBytesOut > 0)
{
if (rc == ZlibConstants.Zok && this.ZlibCodec.AvailableBytesIn == 0)
{
// deferred
}
// are we completely done reading?
if (this.nomoreinput)
{
// and in compression?
if (this.WantCompress)
{
// no more input data available; therefore we flush to try to complete the read
rc = this.ZlibCodec.Deflate(FlushType.Finish);
if (rc != ZlibConstants.Zok && rc != ZlibConstants.ZStreamEnd)
{
throw new ZlibException(
string.Format(
CultureInfo.InvariantCulture,
"Deflating: rc={0} msg={1}",
rc,
this.ZlibCodec.Message));
}
}
}
}
rc = count - this.ZlibCodec.AvailableBytesOut;
// calculate CRC after reading
if (this.crc != null)
{
this.crc.SlurpBlock(buffer, offset, rc);
}
return rc;
}
public async Task<int> WriteAsync(byte[] buffer, int offset, int length, StreamMode mode)
{
System.Diagnostics.Debug.Assert(mEncoderOutput == null);
System.Diagnostics.Debug.Assert(!mCompletionTask.Task.IsCompleted);
// TODO: calculate checksum asynchronously?
if (mCalculateChecksum)
for (int i = 0; i < length; i++)
mChecksum = CRC.Update(mChecksum, buffer[offset + i]);
await mStream.WriteAsync(buffer, offset, length).ConfigureAwait(false);
return length;
}
public Task<int> ReadAsync(byte[] buffer, int offset, int length, StreamMode mode)
{
Utilities.CheckStreamArguments(buffer, offset, length, mode);
var frame = new Frame();
frame.mBuffer = buffer;
frame.mOrigin = offset;
frame.mOffset = offset;
frame.mEnding = offset + length;
frame.mMode = mode;
lock (mSyncObject)
{
if (mDisposeTask != null)
throw new ObjectDisposedException(null);
mQueue.Enqueue(frame);
Monitor.Pulse(mSyncObject);
}
return frame.mCompletion.Task;
}
// workitem 7813 - totally unnecessary
// public override void WriteByte(byte b)
// {
// _buf1[0] = (byte)b;
// // workitem 7159
// if (crc != null)
// crc.SlurpBlock(_buf1, 0, 1);
// Write(_buf1, 0, 1);
// }
public override void Write(byte[] buffer, int offset, int count)
{
// workitem 7159
// calculate the CRC on the unccompressed data (before writing)
if (this.crc != null)
this.crc.SlurpBlock(buffer, offset, count);
if (this.streamMode == StreamMode.Undefined)
this.streamMode = StreamMode.Writer;
else if (this.streamMode != StreamMode.Writer)
throw new ZlibException("Cannot Write after Reading.");
if (count == 0)
return;
// first reference of z property will initialize the private var _z
this.z.InputBuffer = buffer;
this.z.NextIn = offset;
this.z.AvailableBytesIn = count;
bool done;
do
{
this.z.OutputBuffer = this.WorkingBuffer;
this.z.NextOut = 0;
this.z.AvailableBytesOut = this.workingBuffer.Length;
//int rc = (_wantCompress)
// ? _z.Deflate(_flushMode)
// : _z.Inflate(_flushMode);
int rc = this.z.Inflate(this.FlushMode);
if (rc != ZlibConstants.Z_OK && rc != ZlibConstants.Z_STREAM_END)
throw new ZlibException("inflating: " + this.z.Message);
this.Stream.Write(this.workingBuffer, 0, this.workingBuffer.Length - this.z.AvailableBytesOut);
done = this.z.AvailableBytesIn == 0 && this.z.AvailableBytesOut != 0;
// If GZIP and de-compress, we're done when 8 bytes remain.
if (this.Flavor == ZlibStreamFlavor.Gzip)
done = (this.z.AvailableBytesIn == 8 && this.z.AvailableBytesOut != 0);
}
while (!done);
}
public Task<int> ReadAsync(byte[] buffer, int offset, int length, StreamMode mode)
{
Utilities.CheckStreamArguments(buffer, offset, length, mode);
int total = 0;
while (length > 0)
{
Frame frame;
lock (mSyncObject)
{
System.Diagnostics.Debug.Assert(mRunning);
if (mDisposeTask != null)
throw new OperationCanceledException();
while (mQueue.Count == 0)
{
if (mCompleted)
return Task.FromResult(total);
Monitor.Wait(mSyncObject);
if (mDisposeTask != null)
throw new OperationCanceledException();
}
frame = mQueue.Peek();
}
System.Diagnostics.Debug.Assert(frame.mOffset < frame.mEnding);
var processed = Math.Min(frame.mEnding - frame.mOffset, length);
System.Diagnostics.Debug.Assert(processed > 0);
Buffer.BlockCopy(frame.mBuffer, frame.mOffset, buffer, offset, processed);
frame.mOffset += processed;
total += processed;
offset += processed;
length -= processed;
if (frame.mOffset == frame.mEnding)
{
frame.mCompletion.SetResult(frame.mOffset - frame.mOrigin);
lock (mSyncObject)
{
System.Diagnostics.Debug.Assert(mRunning);
var other = mQueue.Dequeue();
System.Diagnostics.Debug.Assert(other == frame);
if (mDisposeTask != null)
throw new OperationCanceledException();
}
}
if (mode == StreamMode.Partial)
break;
}
return Task.FromResult(total);
}
public override void Write( System.Byte [] buffer, int offset, int count )
{
if ( streamMode == StreamMode.Undefined )
streamMode = StreamMode.Writer;
else if ( streamMode != StreamMode.Writer )
throw new CompressionProcessException ( "Cannot Write after Reading." );
if ( count == 0 )
return;
z.InputBuffer = buffer;
_z.NextIn = offset;
_z.AvailableBytesIn = count;
bool done = false;
do
{
_z.OutputBuffer = workingBuffer;
_z.NextOut = 0;
_z.AvailableBytesOut = _workingBuffer.Length;
int rc = ( _wantCompress )
? _z.Deflate ( flushMode )
: _z.Inflate ( flushMode );
if ( rc != ZlibConstants.Z_OK && rc != ZlibConstants.Z_STREAM_END )
throw new CompressionProcessException ( ( _wantCompress ? "de" : "in" ) + "flating: " + _z.Message );
stream.Write ( _workingBuffer, 0, _workingBuffer.Length - _z.AvailableBytesOut );
done = _z.AvailableBytesIn == 0 && _z.AvailableBytesOut != 0;
}
while ( !done );
}
public override System.Int32 Read(System.Byte[] buffer, System.Int32 offset, System.Int32 count)
{
if (_streamMode == StreamMode.Undefined)
{
// for the first read, set up some controls.
_streamMode = StreamMode.Reader;
_z.AvailableBytesIn = 0;
}
if (_streamMode != StreamMode.Reader)
throw new ZlibException("Cannot Read after Writing.");
if (!this._stream.CanRead) throw new ZlibException("The stream is not readable.");
if (count == 0)
return 0;
int rc;
// set up the output of the deflate/inflate codec:
_z.OutputBuffer = buffer;
_z.NextOut = offset;
_z.AvailableBytesOut = count;
// this is not always necessary, but is helpful in case _workingBuffer has been resized. (new byte[])
_z.InputBuffer = _workingBuffer;
do
{
// need data in _workingBuffer in order to deflate/inflate. Here, we check if we have any.
if ((_z.AvailableBytesIn == 0) && (!nomoreinput))
{
// No data available, so try to Read data from the captive stream.
_z.NextIn = 0;
_z.AvailableBytesIn = SharedUtils.ReadInput(_stream, _workingBuffer, 0, _workingBuffer.Length);
//(bufsize<z.avail_out ? bufsize : z.avail_out));
if (_z.AvailableBytesIn == -1)
{
_z.AvailableBytesIn = 0;
nomoreinput = true;
}
}
// we have data in InputBuffer; now compress or decompress as appropriate
rc = (_wantCompress)
? -1
: _z.Inflate(_flushMode);
if (nomoreinput && (rc == ZlibConstants.Z_BUF_ERROR))
return (-1);
if (rc != ZlibConstants.Z_OK && rc != ZlibConstants.Z_STREAM_END)
throw new ZlibException((_wantCompress ? "de" : "in") + "flating: " + _z.Message);
if ((nomoreinput || rc == ZlibConstants.Z_STREAM_END) && (_z.AvailableBytesOut == count))
return (-1);
}
while (_z.AvailableBytesOut == count && rc == ZlibConstants.Z_OK);
return (count - _z.AvailableBytesOut);
}
public static extern int SetQHYCCDStreamMode(IntPtr handle, StreamMode mode);
public override System.Int32 Read(System.Byte[] buffer, System.Int32 offset, System.Int32 count)
{
// According to MS documentation, any implementation of the IO.Stream.Read function must:
// (a) throw an exception if offset & count reference an invalid part of the buffer,
// or if count < 0, or if buffer is null
// (b) return 0 only upon EOF, or if count = 0
// (c) if not EOF, then return at least 1 byte, up to <count> bytes
if (_streamMode == StreamMode.Undefined)
{
if (!this._stream.CanRead) throw new ZlibException("The stream is not readable.");
// for the first read, set up some controls.
_streamMode = StreamMode.Reader;
// (The first reference to _z goes through the private accessor which
// may initialize it.)
z.AvailableBytesIn = 0;
if (_flavor == ZlibStreamFlavor.GZIP)
{
_gzipHeaderByteCount = _ReadAndValidateGzipHeader();
// workitem 8501: handle edge case (decompress empty stream)
if (_gzipHeaderByteCount == 0)
return 0;
}
}
if (_streamMode != StreamMode.Reader)
throw new ZlibException("Cannot Read after Writing.");
if (count == 0) return 0;
if (nomoreinput && _wantCompress) return 0; // workitem 8557
if (buffer == null) throw new ArgumentNullException("buffer");
if (count < 0) throw new ArgumentOutOfRangeException("count");
if (offset < buffer.GetLowerBound(0)) throw new ArgumentOutOfRangeException("offset");
if ((offset + count) > buffer.GetLength(0)) throw new ArgumentOutOfRangeException("count");
int rc = 0;
// set up the output of the deflate/inflate codec:
_z.OutputBuffer = buffer;
_z.NextOut = offset;
_z.AvailableBytesOut = count;
// This is necessary in case _workingBuffer has been resized. (new byte[])
// (The first reference to _workingBuffer goes through the private accessor which
// may initialize it.)
_z.InputBuffer = workingBuffer;
do
{
// need data in _workingBuffer in order to deflate/inflate. Here, we check if we have any.
if ((_z.AvailableBytesIn == 0) && (!nomoreinput))
{
// No data available, so try to Read data from the captive stream.
_z.NextIn = 0;
_z.AvailableBytesIn = _stream.Read(_workingBuffer, 0, _workingBuffer.Length);
if (_z.AvailableBytesIn == 0)
nomoreinput = true;
}
// we have data in InputBuffer; now compress or decompress as appropriate
rc = (_wantCompress)
? _z.Deflate(_flushMode)
: _z.Inflate(_flushMode);
if (nomoreinput && (rc == ZlibConstants.Z_BUF_ERROR))
return 0;
if (rc != ZlibConstants.Z_OK && rc != ZlibConstants.Z_STREAM_END)
throw new ZlibException(String.Format("{0}flating: rc={1} msg={2}", (_wantCompress ? "de" : "in"), rc, _z.Message));
if ((nomoreinput || rc == ZlibConstants.Z_STREAM_END) && (_z.AvailableBytesOut == count))
break; // nothing more to read
}
//while (_z.AvailableBytesOut == count && rc == ZlibConstants.Z_OK);
while (_z.AvailableBytesOut > 0 && !nomoreinput && rc == ZlibConstants.Z_OK);
// workitem 8557
// is there more room in output?
if (_z.AvailableBytesOut > 0)
{
if (rc == ZlibConstants.Z_OK && _z.AvailableBytesIn == 0)
{
// deferred
}
// are we completely done reading?
if (nomoreinput)
{
// and in compression?
if (_wantCompress)
{
// no more input data available; therefore we flush to
// try to complete the read
rc = _z.Deflate(FlushType.Finish);
if (rc != ZlibConstants.Z_OK && rc != ZlibConstants.Z_STREAM_END)
throw new ZlibException(String.Format("Deflating: rc={0} msg={1}", rc, _z.Message));
}
}
}
rc = (count - _z.AvailableBytesOut);
// calculate CRC after reading
if (crc != null)
crc.SlurpBlock(buffer, offset, rc);
return rc;
}
public override void Write(System.Byte[] buffer, int offset, int length)
{
if (_streamMode == StreamMode.Undefined) _streamMode = StreamMode.Writer;
if (_streamMode != StreamMode.Writer)
throw new ZlibException("Cannot Write after Reading.");
if (length == 0)
return;
_z.InputBuffer = buffer;
_z.NextIn = offset;
_z.AvailableBytesIn = length;
do
{
_z.OutputBuffer = _workingBuffer;
_z.NextOut = 0;
_z.AvailableBytesOut = _workingBuffer.Length;
int rc = (_wantCompress)
? 1
: _z.Inflate(_flushMode);
if (rc != ZlibConstants.Z_OK && rc != ZlibConstants.Z_STREAM_END)
throw new ZlibException((_wantCompress ? "de" : "in") + "flating: " + _z.Message);
_stream.Write(_workingBuffer, 0, _workingBuffer.Length - _z.AvailableBytesOut);
}
while (_z.AvailableBytesIn > 0 || _z.AvailableBytesOut == 0);
}
