unzipfile.cs

C#的zip的源代码

// SharpZipLibrary samples
// Copyright (c) 2007, AlphaSierraPapa
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without modification, are
// permitted provided that the following conditions are met:
//
// - Redistributions of source code must retain the above copyright notice, this list
//   of conditions and the following disclaimer.
//
// - Redistributions in binary form must reproduce the above copyright notice, this list
//   of conditions and the following disclaimer in the documentation and/or other materials
//   provided with the distribution.
//
// - Neither the name of the SharpDevelop team nor the names of its contributors may be used to
//   endorse or promote products derived from this software without specific prior written
//   permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS &AS IS& AND ANY EXPRESS
// OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
// AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
// IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
// OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

using System;
using System.Text;
using System.Collections;
using System.IO;

using ICSharpCode.SharpZipLib.Zip;
using ICSharpCode.SharpZipLib.Zip.Compression.Streams;


class MainClass
{			
	public static void Main(string[] args)
	{
		// Perform simple parameter checking.
		if ( args.Length < 1 ) {
			Console.WriteLine("Usage UnzipFile NameOfFile");
			return;
		}
		
		if ( !File.Exists(args[0]) ) {
			Console.WriteLine("Cannot find file '{0}'", args[0]);
			return;
		}

		using (ZipInputStream s = new ZipInputStream(File.OpenRead(args[0]))) {
		
			ZipEntry theEntry;
			while ((theEntry = s.GetNextEntry()) != null) {
				
				Console.WriteLine(theEntry.Name);
				
				string directoryName = Path.GetDirectoryName(theEntry.Name);
				string fileName      = Path.GetFileName(theEntry.Name);
				
				// create directory
				if ( directoryName.Length > 0 ) {
					Directory.CreateDirectory(directoryName);
				}
				
				if (fileName != String.Empty) {
					using (FileStream streamWriter = File.Create(theEntry.Name)) {
					
						int size = 2048;
						byte[] data = new byte[2048];
						while (true) {
							size = s.Read(data, 0, data.Length);
							if (size > 0) {
								streamWriter.Write(data, 0, size);
							} else {
								break;
							}
						}
					}
				}
			}
		}
	}
}