unzip (zip, tar, tag.gz) files with ruby

Question

I want to unzip a lot of zip files. Is there a module or script that checks which format the zip file is and decompresses it? This should work on Linux, I don\'t care about

Answer 1

Draco, thx for you snippet. Some TARs encode directories as paths ending with '/' - see this Wiki. Examlple tar is Oracle Server JRE 7u80 for Windows. This will work for them:

require 'fileutils'
require 'rubygems/package'
require 'zlib'

TAR_LONGLINK = '././@LongLink'

Gem::Package::TarReader.new( Zlib::GzipReader.open tar_gz_archive ) do |tar|
        dest = nil
        tar.each do |entry|
            if entry.full_name == TAR_LONGLINK
                dest = File.join destination, entry.read.strip
                next
            end
            dest ||= File.join destination, entry.full_name
            if entry.directory? || (entry.header.typeflag == '' && entry.full_name.end_with?('/'))
                File.delete dest if File.file? dest
                FileUtils.mkdir_p dest, :mode => entry.header.mode, :verbose => false
            elsif entry.file? || (entry.header.typeflag == '' && !entry.full_name.end_with?('/'))
                FileUtils.rm_rf dest if File.directory? dest
                File.open dest, "wb" do |f|
                    f.print entry.read
                end
                FileUtils.chmod entry.header.mode, dest, :verbose => false
            elsif entry.header.typeflag == '2' #Symlink!
                File.symlink entry.header.linkname, dest
            else
                puts "Unkown tar entry: #{entry.full_name} type: #{entry.header.typeflag}."
            end
            dest = nil
        end
    end
end