[C#] SharpZipLib - The Zip, GZip, BZip2 and Tar Implementation For .NET

Link: ic#code

這邊簡單示範如何 unzip a zipped directory.

  using System;
  using System.IO;
  using ICSharpCode.SharpZipLib.Zip;

  static void Unzip(string src, string dest) { 
    if (!File.Exists(src)) { 
      throw new FileNotFoundException(); 
    }

    using (ZipInputStream reader
        = new ZipInputStream(File.OpenRead(src))) {
      ZipEntry entry;
      while ((entry = reader.GetNextEntry()) != null) { 
        string dir_name = Path.GetDirectoryName(entry.Name);
        string dest_dir = Path.Combine(dest, dir_name);
        Directory.CreateDirectory(dest_dir);

        string file_name = Path.GetFileName(entry.Name);
        if (String.IsNullOrEmpty(file_name)) { 
          continue; 
        }

        using (FileStream writer 
            = File.Create(Path.Combine(dest_dir, file_name))) 
        {
          byte[] data = new byte[2048];
          while (true) {
            int size = reader.Read(data, 0, data.Length);
            if (size > 0) { 
              writer.Write(data, 0, size); 
            } else { 
              break; 
            }
          }
        }
      }
    } 
  }

以上程式碼未做 exception handling，請小心服用。如果給的檔案不能 unzip，我們可能會吃到 ICSharpCode.SharpZipLib.SharpZipBaseException 例外；如果 dest 給錯，也可能會吃到 DirectoryNotFoundException 例外。