文件名称:
SharpZipLib .net压缩库
开发工具:
文件大小: 228kb
下载次数: 0
上传时间: 2010-03-23
详细说明： .net压缩库 SharpZipLib，支持net1.1、net2.0、netCF2.0框架，下面是用法示例： using System; using System.Text; using System.IO; using ICSharpCode.SharpZipLib; namespace SerializableJob.Compression { public enum CompressionType { GZip, BZip2, Zip } public class Compression { public static CompressionType CompressionProvider = CompressionType.GZip; private static Stream OutputStream(Stream inputStream) { switch (CompressionProvider) { case Comp ressionType.BZip2: return new ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream(inputStream); case CompressionType.GZip: return new ICSharpCode.SharpZipLib.GZip.GZipOutputStream(inputStream); case CompressionType.Zip: return new ICSharpCode.SharpZipLib.Zip.ZipOutputStream(inputStream); default: return new ICSharpCode.SharpZipLib.GZip.GZipOutputStream(inputStream); } } private static Stream InputStream(Stream inputStream) { switch (CompressionProvider) { case CompressionType.BZip2: return new ICSharpCode.SharpZipLib.BZip2.BZip2InputStream(inputStream); case CompressionType.GZip: return new ICSharpCode.SharpZipLib.GZip.GZipInputStream(inputStream); case CompressionType.Zip: return new ICSharpCode.SharpZipLib.Zip.ZipInputStream(inputStream); default: return new ICSharpCode.SharpZipLib.GZip.GZipInputStream(inputStream); } } public static byte[] Compress(byte[] bytesToCompress) { MemoryStream ms = new MemoryStream(); Stream s = OutputStream(ms); s.Write(bytesToCompress, 0, bytesToCompress.Length); s.Close(); return ms.ToArray(); } public static string Compress(string stringToCompress) { byte[] compressedData = CompressToByte(stringToCompress); string strOut = Convert.ToBase64String(compressedData); return strOut; } public static byte[] CompressToByte(string stringToCompress) { byte[] bytData = Encoding.Unicode.GetBytes(stringToCompress); return Compress(bytData); } public string DeCompress(string stringToDecompress) { string outString = string.Empty; if (stringToDecompress == null) { throw new ArgumentNullException(stringToDecompress, "You tried to use an empty string"); } try { byte[] inArr = Convert.FromBase64String(stringToDecompress.Trim()); outString = System.Text.Encoding.Unicode.GetString(DeCompress(inArr)); } catch (NullReferenceException nEx) { return nEx.Message; } return outString; } public static byte[] DeCompress(byte[] bytesToDecompress) { byte[] writeData = new byte[4096]; Stream s2 = InputStream(new MemoryStream(bytesToDecompress)); MemoryStream outStream = new MemoryStream(); while (true) { int size = s2.Read(writeData, 0, writeData.Length); if (size > 0) { outStream.Write(writeData, 0, size); } else { break; } } s2.Close(); byte[] outArr = outStream.ToArray(); outStream.Close(); return outArr; } } } ...展开收缩
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