/// <summary>
/// Create a <c>DeflateStream</c> using the specified <c>CompressionMode</c>
/// and the specified <c>CompressionLevel</c>, and explicitly specify whether
/// the stream should be left open after Deflation or Inflation.
/// </summary>
///
/// <remarks>
///
/// <para>
/// When mode is <c>CompressionMode.Decompress</c>, the level parameter is ignored.
/// </para>
///
/// <para>
/// This constructor allows the application to request that the captive stream
/// remain open after the deflation or inflation occurs. By default, after
/// <c>Close()</c> is called on the stream, the captive stream is also
/// closed. In some cases this is not desired, for example if the stream is a
/// <see cref="System.IO.MemoryStream"/> that will be re-read after
/// compression. Specify true for the <paramref name="leaveOpen"/> parameter
/// to leave the stream open.
/// </para>
///
/// </remarks>
///
/// <example>
///
/// This example shows how to use a <c>DeflateStream</c> to compress data from
/// a file, and store the compressed data into another file.
///
/// <code>
/// using (var output = System.IO.File.Create(fileToCompress + ".deflated"))
/// {
/// using (System.IO.Stream input = System.IO.File.OpenRead(fileToCompress))
/// {
/// using (Stream compressor = new DeflateStream(output, CompressionMode.Compress, CompressionLevel.BestCompression, true))
/// {
/// byte[] buffer = new byte[WORKING_BUFFER_SIZE];
/// int n= -1;
/// while (n != 0)
/// {
/// if (n > 0)
/// compressor.Write(buffer, 0, n);
/// n= input.Read(buffer, 0, buffer.Length);
/// }
/// }
/// }
/// // can write additional data to the output stream here
/// }
/// </code>
///
/// <code lang="VB">
/// Using output As FileStream = File.Create(fileToCompress & ".deflated")
/// Using input As Stream = File.OpenRead(fileToCompress)
/// Using compressor As Stream = New DeflateStream(output, CompressionMode.Compress, CompressionLevel.BestCompression, True)
/// Dim buffer As Byte() = New Byte(4096) {}
/// Dim n As Integer = -1
/// Do While (n <> 0)
/// If (n > 0) Then
/// compressor.Write(buffer, 0, n)
/// End If
/// n = input.Read(buffer, 0, buffer.Length)
/// Loop
/// End Using
/// End Using
/// ' can write additional data to the output stream here.
/// End Using
/// </code>
/// </example>
/// <param name="stream">The stream which will be read or written.</param>
/// <param name="mode">Indicates whether the DeflateStream will compress or decompress.</param>
/// <param name="leaveOpen">true if the application would like the stream to remain open after inflation/deflation.</param>
/// <param name="level">A tuning knob to trade speed for effectiveness.</param>
public DeflateStream(System.IO.Stream stream, CompressionMode mode, CompressionLevel level, bool leaveOpen)
{
_innerStream = stream;
_baseStream = new ZlibBaseStream(stream, mode, level, ZlibStreamFlavor.DEFLATE, leaveOpen);
}
/// <summary>
/// Create a <c>ZlibStream</c> using the specified <c>CompressionMode</c>
/// and the specified <c>CompressionLevel</c>, and explicitly specify
/// whether the stream should be left open after Deflation or Inflation.
/// </summary>
///
/// <remarks>
///
/// <para>
/// This constructor allows the application to request that the captive
/// stream remain open after the deflation or inflation occurs. By
/// default, after <c>Close()</c> is called on the stream, the captive
/// stream is also closed. In some cases this is not desired, for example
/// if the stream is a <see cref="System.IO.MemoryStream"/> that will be
/// re-read after compression. Specify true for the <paramref
/// name="leaveOpen"/> parameter to leave the stream open.
/// </para>
///
/// <para>
/// When mode is <c>CompressionMode.Decompress</c>, the level parameter is
/// ignored.
/// </para>
///
/// </remarks>
///
/// <example>
///
/// This example shows how to use a ZlibStream to compress the data from a file,
/// and store the result into another file. The filestream remains open to allow
/// additional data to be written to it.
///
/// <code>
/// using (var output = System.IO.File.Create(fileToCompress + ".zlib"))
/// {
/// using (System.IO.Stream input = System.IO.File.OpenRead(fileToCompress))
/// {
/// using (Stream compressor = new ZlibStream(output, CompressionMode.Compress, CompressionLevel.BestCompression, true))
/// {
/// byte[] buffer = new byte[WORKING_BUFFER_SIZE];
/// int n;
/// while ((n= input.Read(buffer, 0, buffer.Length)) != 0)
/// {
/// compressor.Write(buffer, 0, n);
/// }
/// }
/// }
/// // can write additional data to the output stream here
/// }
/// </code>
/// <code lang="VB">
/// Using output As FileStream = File.Create(fileToCompress & ".zlib")
/// Using input As Stream = File.OpenRead(fileToCompress)
/// Using compressor As Stream = New ZlibStream(output, CompressionMode.Compress, CompressionLevel.BestCompression, True)
/// Dim buffer As Byte() = New Byte(4096) {}
/// Dim n As Integer = -1
/// Do While (n <> 0)
/// If (n > 0) Then
/// compressor.Write(buffer, 0, n)
/// End If
/// n = input.Read(buffer, 0, buffer.Length)
/// Loop
/// End Using
/// End Using
/// ' can write additional data to the output stream here.
/// End Using
/// </code>
/// </example>
///
/// <param name="stream">The stream which will be read or written.</param>
///
/// <param name="mode">Indicates whether the ZlibStream will compress or decompress.</param>
///
/// <param name="leaveOpen">
/// true if the application would like the stream to remain open after
/// inflation/deflation.
/// </param>
///
/// <param name="level">
/// A tuning knob to trade speed for effectiveness. This parameter is
/// effective only when mode is <c>CompressionMode.Compress</c>.
/// </param>
public ZlibStream(System.IO.Stream stream, CompressionMode mode, CompressionLevel level, bool leaveOpen)
{
_baseStream = new ZlibBaseStream(stream, mode, level, ZlibStreamFlavor.ZLIB, leaveOpen);
}
/// <summary>
/// Create a <c>GZipStream</c> using the specified <c>CompressionMode</c> and the
/// specified <c>CompressionLevel</c>, and explicitly specify whether the
/// stream should be left open after Deflation or Inflation.
/// </summary>
///
/// <remarks>
///
/// <para>
/// This constructor allows the application to request that the captive stream
/// remain open after the deflation or inflation occurs. By default, after
/// <c>Close()</c> is called on the stream, the captive stream is also
/// closed. In some cases this is not desired, for example if the stream is a
/// memory stream that will be re-read after compressed data has been written
/// to it. Specify true for the <paramref name="leaveOpen"/> parameter to
/// leave the stream open.
/// </para>
///
/// <para>
/// As noted in the class documentation, the <c>CompressionMode</c> (Compress
/// or Decompress) also establishes the "direction" of the stream. A
/// <c>GZipStream</c> with <c>CompressionMode.Compress</c> works only through
/// <c>Write()</c>. A <c>GZipStream</c> with <c>CompressionMode.Decompress</c> works only
/// through <c>Read()</c>.
/// </para>
///
/// </remarks>
///
/// <example>
/// This example shows how to use a <c>GZipStream</c> to compress data.
/// <code>
/// using (System.IO.Stream input = System.IO.File.OpenRead(fileToCompress))
/// {
/// using (var raw = System.IO.File.Create(outputFile))
/// {
/// using (Stream compressor = new GZipStream(raw, CompressionMode.Compress, CompressionLevel.BestCompression, true))
/// {
/// byte[] buffer = new byte[WORKING_BUFFER_SIZE];
/// int n;
/// while ((n= input.Read(buffer, 0, buffer.Length)) != 0)
/// {
/// compressor.Write(buffer, 0, n);
/// }
/// }
/// }
/// }
/// </code>
/// <code lang="VB">
/// Dim outputFile As String = (fileToCompress & ".compressed")
/// Using input As Stream = File.OpenRead(fileToCompress)
/// Using raw As FileStream = File.Create(outputFile)
/// Using compressor As Stream = New GZipStream(raw, CompressionMode.Compress, CompressionLevel.BestCompression, True)
/// Dim buffer As Byte() = New Byte(4096) {}
/// Dim n As Integer = -1
/// Do While (n <> 0)
/// If (n > 0) Then
/// compressor.Write(buffer, 0, n)
/// End If
/// n = input.Read(buffer, 0, buffer.Length)
/// Loop
/// End Using
/// End Using
/// End Using
/// </code>
/// </example>
/// <param name="stream">The stream which will be read or written.</param>
/// <param name="mode">Indicates whether the GZipStream will compress or decompress.</param>
/// <param name="leaveOpen">true if the application would like the stream to remain open after inflation/deflation.</param>
/// <param name="level">A tuning knob to trade speed for effectiveness.</param>
public GZipStream(Stream stream, CompressionMode mode, CompressionLevel level, bool leaveOpen)
{
_baseStream = new ZlibBaseStream(stream, mode, level, ZlibStreamFlavor.GZIP, leaveOpen);
}