80 lines
2.5 KiB
C#
80 lines
2.5 KiB
C#
using System;
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using System.IO;
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namespace ICSharpCode.SharpZipLib.BZip2
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{
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/// <summary>
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/// An example class to demonstrate compression and decompression of BZip2 streams.
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/// </summary>
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public static class BZip2
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{
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/// <summary>
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/// Decompress the <paramref name="inStream">input</paramref> writing
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/// uncompressed data to the <paramref name="outStream">output stream</paramref>
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/// </summary>
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/// <param name="inStream">The readable stream containing data to decompress.</param>
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/// <param name="outStream">The output stream to receive the decompressed data.</param>
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/// <param name="isStreamOwner">Both streams are closed on completion if true.</param>
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public static void Decompress(Stream inStream, Stream outStream, bool isStreamOwner)
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{
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if (inStream == null)
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throw new ArgumentNullException(nameof(inStream));
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if (outStream == null)
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throw new ArgumentNullException(nameof(outStream));
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try
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{
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using (BZip2InputStream bzipInput = new BZip2InputStream(inStream))
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{
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bzipInput.IsStreamOwner = isStreamOwner;
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Core.StreamUtils.Copy(bzipInput, outStream, new byte[4096]);
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}
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}
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finally
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{
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if (isStreamOwner)
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{
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// inStream is closed by the BZip2InputStream if stream owner
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outStream.Dispose();
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}
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}
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}
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/// <summary>
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/// Compress the <paramref name="inStream">input stream</paramref> sending
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/// result data to <paramref name="outStream">output stream</paramref>
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/// </summary>
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/// <param name="inStream">The readable stream to compress.</param>
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/// <param name="outStream">The output stream to receive the compressed data.</param>
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/// <param name="isStreamOwner">Both streams are closed on completion if true.</param>
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/// <param name="level">Block size acts as compression level (1 to 9) with 1 giving
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/// the lowest compression and 9 the highest.</param>
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public static void Compress(Stream inStream, Stream outStream, bool isStreamOwner, int level)
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{
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if (inStream == null)
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throw new ArgumentNullException(nameof(inStream));
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if (outStream == null)
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throw new ArgumentNullException(nameof(outStream));
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try
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{
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using (BZip2OutputStream bzipOutput = new BZip2OutputStream(outStream, level))
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{
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bzipOutput.IsStreamOwner = isStreamOwner;
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Core.StreamUtils.Copy(inStream, bzipOutput, new byte[4096]);
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}
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}
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finally
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{
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if (isStreamOwner)
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{
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// outStream is closed by the BZip2OutputStream if stream owner
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inStream.Dispose();
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}
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}
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}
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}
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}
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