从字符串C＃LZW压缩 [英] LZW compression on C# from string

问题描述

我在寻找C＃中的LZW压缩算法，需要一个串，并返回一个字符串。
我google搜索了几个小时，所有我发现使用的MemoryStream，BinaryWriters等

I'm looking for a LZW compression algorithm in C# that takes a "string" and returns a string. I've googling for hours and all I've found use MemoryStream, BinaryWriters, etc.

我只是想能够做这样的事情：

I just want to be able to do something like:


串_data =12345;

string _data = "12345";

字符串_result = CompressToLZW （_数据）;


string _result = CompressToLZW(_data);

，然后通过Ajax传递字符串到浏览器。我已经对JavaScript（http://rosettacode.org/wiki/LZW_compression#JavaScript）

and then pass that string via Ajax to the browser. I already have the LZW decompression algorithm for javascript (http://rosettacode.org/wiki/LZW_compression#JavaScript)

感谢.-

更新：

这是我现在使用带的 http://paste.lisp.org/display/12198

This is the code I'm using right now with http://paste.lisp.org/display/12198

    string _data = "12345_12345_12345_12345";

    byte[] byteArray = Encoding.ASCII.GetBytes(_data);

    MemoryStream _st = new MemoryStream(byteArray);

    StreamReader _sr = new StreamReader(_st);

    MemoryStream streamoutput = new MemoryStream();

    BinaryWriter _output= new BinaryWriter(streamoutput);

    LZW.Compress(_sr, _output);

    string _res = (new StreamReader(_output.BaseStream)).ReadToEnd();

    return _res;

更新2
我发现在C＃源代码，做的工作在的 http://code.google.com/p/sharp-lzw/source/browse/
感谢.-

UPDATE 2 I found a source code in C# that does the work at http://code.google.com/p/sharp-lzw/source/browse/ Thanks.-

推荐答案

使用这样的：

private string CompressToLZW(string input)
{
    using (MemoryStream stream = new MemoryStream())
    {
        ComputeLZW(input, stream);
        stream.Seek(0, SeekOrigin.Begin);
        using (StreamReader reader = new StreamReader(stream))
        {
            return reader.ReadToEnd();
        }
    }
}

其中ComputeLZW（）是你有LZW方法，使用流。

where ComputeLZW() is the LZW method you have that uses a stream.

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