/// <summary>
/// Returns a new <c>MemoryStream</c> that has decompressed data inside.
/// </summary>
/// <param name="compressedData"></param>
/// <returns>A <c>new MemoryStream</c>.</returns>
public MemoryStream DecompressToStream(ReadOnlyMemory <byte> compressedData)
{
var uncompressedStream = new MemoryStream(CompressionHelpers.GetGzipUncompressedLength(compressedData));
using (var gzipStream = new GZipStream(compressedData.AsStream(), CompressionMode.Decompress, false))
{
gzipStream.CopyTo(uncompressedStream);
}
return(uncompressedStream);
}
/// <summary>
/// Returns a new <c>MemoryStream</c> that has decompressed data inside. The provided stream is optionally closed.
/// </summary>
/// <remarks>The new stream's position is set to the beginning of the stream when returned.</remarks>
/// <param name="compressedStream"></param>
/// <returns></returns>
public MemoryStream Decompress(Stream compressedStream, bool leaveStreamOpen = false)
{
Guard.AgainstNullOrEmpty(compressedStream, nameof(compressedStream));
if (compressedStream.Position == compressedStream.Length)
{
compressedStream.Seek(0, SeekOrigin.Begin);
}
var uncompressedStream = new MemoryStream(CompressionHelpers.GetGzipUncompressedLength(compressedStream));
using (var gzipStream = new GZipStream(compressedStream, CompressionMode.Decompress, leaveStreamOpen))
{
gzipStream.CopyTo(uncompressedStream);
}
return(uncompressedStream);
}
public ArraySegment <byte> Decompress(ReadOnlyMemory <byte> compressedData)
{
Guard.AgainstEmpty(compressedData, nameof(compressedData));
using var uncompressedStream = new MemoryStream(CompressionHelpers.GetGzipUncompressedLength(compressedData));
using (var gzipStream = new GZipStream(compressedData.AsStream(), CompressionMode.Decompress, false))
{
gzipStream.CopyTo(uncompressedStream);
}
if (uncompressedStream.TryGetBuffer(out var buffer))
{
return(buffer);
}
else
{
return(uncompressedStream.ToArray());
}
}
/// <summary>
/// Returns a new <c>MemoryStream</c> that has decompressed data inside. The provided stream is optionally closed.
/// </summary>
/// <param name="compressedStream"></param>
/// <returns></returns>
public async ValueTask <MemoryStream> DecompressAsync(Stream compressedStream, bool leaveStreamOpen = false)
{
Guard.AgainstNullOrEmpty(compressedStream, nameof(compressedStream));
if (compressedStream.Position == compressedStream.Length)
{
compressedStream.Seek(0, SeekOrigin.Begin);
}
var uncompressedStream = new MemoryStream(CompressionHelpers.GetGzipUncompressedLength(compressedStream));
using (var gzipStream = new GZipStream(compressedStream, CompressionMode.Decompress, leaveStreamOpen))
{
await gzipStream
.CopyToAsync(uncompressedStream)
.ConfigureAwait(false);
}
return(uncompressedStream);
}
/// <summary>
/// Returns a new <c>MemoryStream</c> that has decompressed data inside.
/// </summary>
/// <param name="compressedStream"></param>
/// <param name="leaveStreamOpen"></param>
/// <returns>A <c>new MemoryStream</c>.</returns>
public MemoryStream DecompressToStream(ReadOnlyMemory <byte> compressedData)
{
Guard.AgainstEmpty(compressedData, nameof(compressedData));
var uncompressedStream = RecyclableManager.GetStream(nameof(RecyclableGzipProvider), CompressionHelpers.GetGzipUncompressedLength(compressedData));
using (var gzipStream = new GZipStream(compressedData.AsStream(), CompressionMode.Decompress, false))
{
gzipStream.CopyTo(uncompressedStream);
}
return(uncompressedStream);
}
public async ValueTask <ArraySegment <byte> > DecompressAsync(ReadOnlyMemory <byte> compressedData)
{
Guard.AgainstEmpty(compressedData, nameof(compressedData));
using var uncompressedStream = RecyclableManager.GetStream(nameof(RecyclableGzipProvider), CompressionHelpers.GetGzipUncompressedLength(compressedData));
using (var gzipStream = new GZipStream(compressedData.AsStream(), CompressionMode.Decompress, false))
{
await gzipStream
.CopyToAsync(uncompressedStream)
.ConfigureAwait(false);
}
if (uncompressedStream.TryGetBuffer(out var buffer))
{
return(buffer);
}
else
{
// dispose stream after allocation.
using (uncompressedStream)
{
return(uncompressedStream.ToArray());
}
}
}
