public static async Task <string> GZipUncompress([NotNull] this byte[] buffer)
{
if (buffer == null || buffer.LongLength == 0)
{
throw new ArgumentNullException("buffer");
}
using (var ms = new MemoryStream(buffer))
using (var gzs = new Ionic.Zlib.ZlibStream(ms, Ionic.Zlib.CompressionMode.Decompress, true))
using (var output = new MemoryStream())
{
await gzs.CopyToAsync(output);
var array = output.ToArray();
var str = Encoding.UTF8.GetString(array);
return(str);
}
}
/// <summary>
/// Un-compresses a ZLIB-compressed (Unix-style GZIP compression) byte array to the original source text
/// </summary>
/// <param name="buffer">The byte array that represents the compressed data to un-compress</param>
/// <returns>The original UTF-8 string that was compressed</returns>
/// <exception cref="ArgumentNullException">Thrown when the <paramref name="buffer"/> is null or an empty string</exception>
/// <exception cref="DecoderFallbackException">Thrown when characters are provided in the <param name="buffer"> that cannot be represented by UTF-8</param></exception>
/// <exception cref="ArgumentException">Thrown when a byte array is passed in for the <paramref name="buffer"/> contains invalid data for the decompression routine.</exception>
/// <exception cref="ObjectDisposedException">Thrown when the source or destination stream are disposed at the time they are internally copied for compression. Should never occur.</exception>
/// <exception cref="NotSupportedException">Thrown when the source stream does not support reading or the destination stream does not support writing. Should never occur.</exception>
public static async Task <string> GZipUncompressAsync(this byte[] buffer, CancellationToken cancellationToken = default(CancellationToken))
{
if (buffer == null || buffer.LongLength == 0)
{
throw new ArgumentNullException("buffer");
}
using (var ms = new MemoryStream(buffer))
using (var gzs = new Ionic.Zlib.ZlibStream(ms, Ionic.Zlib.CompressionMode.Decompress, true))
using (var output = new MemoryStream())
{
// Buffer size is default for underlying Stream.CopyToAsync()
await gzs.CopyToAsync(output, 81920, cancellationToken);
var array = output.ToArray();
var str = Encoding.UTF8.GetString(array);
return(str);
}
}
public static async Task <byte[]> GZipCompress([NotNull] this string text)
{
if (string.IsNullOrWhiteSpace(text))
{
throw new ArgumentNullException("text");
}
var buffer = Encoding.UTF8.GetBytes(text);
using (var ms = new MemoryStream(buffer))
using (var gzs = new Ionic.Zlib.ZlibStream(ms, Ionic.Zlib.CompressionMode.Compress, true))
using (var output = new MemoryStream())
{
await gzs.CopyToAsync(output);
var array = output.ToArray();
return(array);
}
}
/// <summary>
/// Compresses a string using ZLIB compression (Unix-style GZIP compression)
/// </summary>
/// <param name="text">The text to compress</param>
/// <returns>A ZLIB compressed byte array representation of <paramref name="text"/></returns>
/// <exception cref="ArgumentNullException">Thrown when the <paramref name="text"/> is null or an empty string</exception>
/// <exception cref="EncoderFallbackException">Thrown when characters are provided in the <param name="text"> that cannot be represented by UTF-8</param></exception>
/// <exception cref="ObjectDisposedException">Thrown when the source or destination stream are disposed at the time they are internally copied for compression. Should never occur.</exception>
/// <exception cref="NotSupportedException">Thrown when the source stream does not support reading or the destination stream does not support writing. Should never occur.</exception>
public static async Task <byte[]> GZipCompressAsync(this string text, CancellationToken cancellationToken = default(CancellationToken))
{
if (string.IsNullOrWhiteSpace(text))
{
throw new ArgumentNullException("text");
}
var buffer = Encoding.UTF8.GetBytes(text);
using (var ms = new MemoryStream(buffer))
using (var gzs = new Ionic.Zlib.ZlibStream(ms, Ionic.Zlib.CompressionMode.Compress, true))
using (var output = new MemoryStream())
{
// Buffer size is default for underlying Stream.CopyToAsync()
await gzs.CopyToAsync(output, 81920, cancellationToken);
var array = output.ToArray();
return(array);
}
}