用压缩RAR文件 [英] Compress a file with RAR

问题描述

我有我想要压缩它得到一个指定的大小后的文本文件。我已经看过 GZipStream 伟大的工程，但RAR压缩要好得多。搜索结果
我一直在寻找一个库，可以压缩与RAR文件（我真的不关心提取或解压缩），但我无法找到一个还没有。

I have a text file that I want to compress after it gets an specified size. I've already seen GZipStream which works great, but RAR compression is much better.

I've been looking for a library that can compress a file with RAR (I really don't care about extracting or uncompressing), but I couldn't find one yet.

推荐答案

由于 RAR压缩算法是不是免费的（只有解压算法）你不会找到它库（或必须购买许可证）

As the RAR compression algorithm isn't free (only the decompression algorithm is), you won't find a library for it (or have to purchase a license).

一个很好的替代是的LZMA SDK ，提供7-Zip的所使用的压缩算法。

A good alternative is the LZMA SDK that delivers the compression algorithms used in 7-Zip.

有关的压缩比/速度对比，你可以看看如在最大压缩汇总页面，排名50和52，在最佳实模式和7比较WinRAR的4.01在超模式，邮编9.22。 WinRAR的压缩仅略好（小于1％）。快，7-Zip的解压缩速度更快

For a compression ratio/speed comparison, you can have a look e.g. at the Maximum Compression summary page, ranks 50 and 52, comparing WinRAR 4.01 in "Best Solid" mode and 7-Zip 9.22 in "Ultra" mode. WinRAR compresses only slightly better (<1%) and faster, 7-Zip decompresses faster.

请注意，作为peachykeen提到的，如果你看的效率等级的，而不是大小，WinRAR的在正常模式下比7-Zip的速度要快得多。

Note that, as peachykeen noted, if you look at the efficiency ratings instead of size, WinRAR in normal mode is much faster than 7-Zip.

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