| 发表于：2007-02-15 15:52:1913楼 得分:0 |
from http://www.cnblogs.com/aiyagaze/archive/2006/11/30/576995.html
using system;
using system.text;
using system.runtime.serialization;
using system.runtime.serialization.formatters.binary;
using system.collections;
using system.io;
using system.io.compression;
namespace greatchn.gzipcompression
{
public class gzipcompress
{
/**//// <summary>
/// 对目标文件夹进行压缩，将压缩结果保存为指定文件
/// </summary>
/// <param name= "dirpath "> 目标文件夹 </param>
/// <param name= "filename "> 压缩文件 </param>
public static void compress（string dirpath, string filename)
{
arraylist list = new arraylist（);
foreach （string f in directory.getfiles（dirpath))
{
byte[] destbuffer = file.readallbytes（f);
serializefileinfo sfi = new serializefileinfo（f, destbuffer);
list.add（sfi);
}
iformatter formatter = new binaryformatter（);
using （stream s = new memorystream（))
{
formatter.serialize（s, list);
s.position = 0;
createcompressfile（s, filename);
}
}
/**//// <summary>
/// 对目标压缩文件解压缩，将内容解压缩到指定文件夹
/// </summary>
/// <param name= "filename "> 压缩文件 </param>
/// <param name= "dirpath "> 解压缩目录 </param>
public static void decompress（string filename, string dirpath)
{
using （stream source = file.openread（filename))
{
using （stream destination = new memorystream（))
{
using （gzipstream input = new gzipstream（source, compressionmode.decompress, true))
{
byte[] bytes = new byte[4096];
int n;
while （（n = input.read（bytes, 0, bytes.length)) != 0)
{
destination.write（bytes, 0, n);
}
}
destination.flush（);
destination.position = 0;
deserializefiles（destination, dirpath);
}
}
}
private static void deserializefiles（stream s, string dirpath)
{
binaryformatter b = new binaryformatter（);
arraylist list = （arraylist)b.deserialize（s);
foreach （serializefileinfo f in list)
{
string newname = dirpath + path.getfilename（f.filename);
using （filestream fs = new filestream（newname, filemode.create, fileaccess.write))
{
fs.write（f.filebuffer, 0, f.filebuffer.length);
fs.close（);
}
}
}
private static void createcompressfile（stream source, string destinationname)
{
using （stream destination = new filestream（destinationname, filemode.create, fileaccess.write))
{
using （gzipstream output = new gzipstream（destination, compressionmode.compress))
{
byte[] bytes = new byte[4096];
int n;
while （（n = source.read（bytes, 0, bytes.length)) != 0)
{
output.write（bytes, 0, n);
}
}
}
}
[serializable]
class serializefileinfo
{
public serializefileinfo（string name, byte[] buffer)
{
filename = name;
filebuffer = buffer;
}
string filename;
public string filename
{
get
{
return filename;
}
}
byte[] filebuffer;
public byte[] filebuffer
{
get
{
return filebuffer;
}
}
}
}
} | | |
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