使用Deflate演算法對檔案進行壓縮與解壓縮的方法詳解

如下所示： 複製代碼 代碼如下: static void Main()
{
string path = @"D:\Practise\IO\Compress";
string deCompressPath = @"D:\Practise\IO\DeCompress";
DirectoryInfo dir = new DirectoryInfo(path);
foreach (FileInfo fi in dir.GetFiles())
{
Compress(fi);
}
foreach (FileInfo fi in dir.GetFiles("*.cmp"))
{
DeCompress(fi, deCompressPath);
}
}
public static void Compress(FileInfo fi)
{
using (FileStream fs = fi.OpenRead())
{
if (fi.Attributes != FileAttributes.Hidden & fi.Extension != ".cmp")
{
using (FileStream compressfile = new FileStream(fi.FullName + ".cmp", FileMode.Create, FileAccess.ReadWrite))
{
using (DeflateStream ds = new DeflateStream(compressfile, CompressionMode.Compress))
{
fs.CopyTo(ds);
Console.WriteLine("This File {0} has been Compressed to {1}",fi.Name,compressfile.Name);
}
}
}
}
}
public static void DeCompress(FileInfo fi, string desination)
{
using (FileStream fs = fi.OpenRead())
{
string deCompressFile = fi.Name.Remove(fi.Name.Length - fi.Extension.Length);
using (FileStream deCompressFS = new FileStream(Path.Combine(desination, deCompressFile), FileMode.Create, FileAccess.ReadWrite))
{
using (DeflateStream ds = new DeflateStream(fs, CompressionMode.Decompress))
{
ds.CopyTo(deCompressFS);
Console.WriteLine("This file {0} has been Decompressd", fi.Name);
}
}
}
}