SharpZipLib库压缩的文件夹与高水平compresion和eficient时间的子文件夹 [英] SharpZipLib library Compress a folder with subfolders with high level compresion and eficient time

问题描述

我用很多现有的代码，我试图压缩文件夹中的许多方面，但仍然我amhaving问题随着时间的推移和文件夹的大小（大约仍然相同的大小）。
这个代码是从库的来源，仍然不给想要的结果。

 静态无效的主要（字符串[ ]参数）
 {
 // copyDirectory（@C：\x，@D：\1）; 
 ZipOutputStream邮编=新ZipOutputStream（File.Create（@D：\2.zip））; 
 
 zip.SetLevel（9）; 
 
字符串的文件夹= @D：\music 
 
 ZipFolder（文件夹，文件夹压缩）; 
 zip.Finish（）; 
 zip.Close（）; 
} 
 
公共静态无效ZipFolder（字符串RootFolder，串CurrentFolder，ZipOutputStream的zstream）
 {
的String [] =子文件夹Directory.GetDirectories（CurrentFolder）; 
 
的foreach（子文件夹中的文件夹弦）
 ZipFolder（RootFolder，文件夹的zstream）; 
 
串relativePath = CurrentFolder.Substring（RootFolder.Length）+/; 
 
如果（relativePath.Length→1）
 {
的ZipEntry dirEntry; 
 
 dirEntry =新的ZipEntry（relativePath）; 
 dirEntry.DateTime = DateTime.Now; 
} 
 
的foreach（在Directory.GetFiles字符串文件（CurrentFolder））
 {
 AddFileToZip（的zstream，relativePath，文件）; 
} 
} 
 
私有静态无效AddFileToZip（ZipOutputStream的zstream，串relativePath，字符串文件）
 {
字节[]缓冲区=新的字节[4096 ]; 
串fileRelativePath =（relativePath.Length→1 relativePath：的String.Empty？）+ Path.GetFileName（文件）; 
 ZipEntry的入门=新的ZipEntry（fileRelativePath）; 
 
 entry.DateTime = DateTime.Now; 
 zStream.PutNextEntry（输入）; 
 
使用（的FileStream FS = File.OpenRead（文件））
 {
 INT sourceBytes; 
 
做
 {
 sourceBytes = fs.Read（缓冲，0，buffer.Length）; 
 zStream.Write（缓冲液，0，sourceBytes）; 
}当（sourceBytes大于0）; 
} 
} 
  

解决方案

字符串的文件夹= @D：\music;

如果你试图压缩的MP3文件你不会看到太多萎缩。

有限制的压缩算法有多少能做到呢。而更多的压缩总是需要更多的时间。

i used many existing codes and i tried to zip the folder in many ways but still i amhaving problem with time and folder size (still approx same size). this code is from the source of the library and still not giving the wanted result

static void Main(string[] args)
{
    //copyDirectory(@"C:\x", @"D:\1");
    ZipOutputStream zip = new ZipOutputStream(File.Create(@"d:\2.zip"));

    zip.SetLevel(9);

    string folder = @"D:\music";

    ZipFolder(folder, folder, zip);
    zip.Finish();
    zip.Close();
}

public static void ZipFolder(string RootFolder, string CurrentFolder, ZipOutputStream zStream)
{
    string[] SubFolders = Directory.GetDirectories(CurrentFolder);

    foreach (string Folder in SubFolders)
        ZipFolder(RootFolder, Folder, zStream);

    string relativePath = CurrentFolder.Substring(RootFolder.Length) + "/";

    if (relativePath.Length > 1)
    {
        ZipEntry dirEntry;

        dirEntry = new ZipEntry(relativePath);
        dirEntry.DateTime = DateTime.Now;
    }

    foreach (string file in Directory.GetFiles(CurrentFolder))
    {
        AddFileToZip(zStream, relativePath, file);
    }
}

private static void AddFileToZip(ZipOutputStream zStream, string relativePath, string file)
{
    byte[] buffer = new byte[4096];
    string fileRelativePath = (relativePath.Length > 1 ? relativePath : string.Empty) + Path.GetFileName(file);
    ZipEntry entry = new ZipEntry(fileRelativePath);

    entry.DateTime = DateTime.Now;
    zStream.PutNextEntry(entry);

    using (FileStream fs = File.OpenRead(file))
    {
        int sourceBytes;

        do
        {
            sourceBytes = fs.Read(buffer, 0, buffer.Length);
            zStream.Write(buffer, 0, sourceBytes);
        } while (sourceBytes > 0);
    }
}

解决方案

string folder = @"D:\music";

If you're trying to zip MP3 files you're not going to see much shrinking.

There are limits to how much a compression algorithm can do anyway. And more compression always takes more time.

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