压缩文件与PPMD压缩，以编程方式解压缩

本文介绍了压缩文件与PPMD压缩，以编程方式解压缩的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我有一个Linux Python脚本，需要解压缩一些zip文件。我正在使用zipfile模块。在这些文件中的一些我得到：

BadZipfile：不支持的压缩方法98文件

搜索这些文件似乎是使用方法98 PPMD​​压缩。我想如果python不能做到这一点，我会做一个黑客系统调用解压缩6.0并完成它。此错误：

skipping：fileName`PPMd'方法不支持

我试过7zip：

提取fileName不支持的方法

我以为我用命令行实用程序ppmd命中了pay-dirt，但是：

用于文本数据的快速PPMII压缩器，变体I，2009年11月6日分段故障 pre>

还有什么我可以试试吗？ WinZip在Windows中没有这些文件的问题，但我需要在Linux中这样做。

解决方案

p7zip（二进制）？

似乎支持PPMD压缩格式。

一些PPMd开关：-mmem = 24b，-mmem = 24k，-mmem = 24m，-mo = 2和-mo = 32

I have a Linux Python script that needs to unzip some zip files. I was using the zipfile module. On a few of these files I'm getting:

BadZipfile: Unsupported compression method 98 for file

Searching around it seems these files are using Method 98 PPMD compression. I figured if python couldn't do it, I'd make a hack system call to unzip 6.0 and be done with it. This errors:

skipping: fileName `PPMd' method not supported

I've tried 7zip:

Extracting fileName Unsupported Method

I thought I hit pay-dirt with a command line utility ppmd, but:

Fast PPMII compressor for textual data, variant I, Nov 6 2009 Segmentation fault

Anything else I can try? WinZip in windows has no problem with these files, but I need to do this in Linux.

解决方案

Have you taken a look at the p7zip (binary)?

It seems to support the PPMD compression format.

Some PPMd switches: -mmem=24b, -mmem=24k, -mmem=24m, -mo=2, and -mo=32