我想解压大量的Zip文件。是否有可以检查zip文件格式并解压缩的模块或脚本?此功能需要在Linux系统上运行,不考虑其他操作系统。
require 'rubygems/package'
require 'zlib'
tar_extract = Gem::Package::TarReader.new(Zlib::GzipReader.open('Path/To/myfile.tar.gz'))
tar_extract.rewind # The extract has to be rewinded after every iteration
tar_extract.each do |entry|
puts entry.full_name
puts entry.directory?
puts entry.file?
# puts entry.read
end
tar_extract.close
每个类型为Gem::Package::TarReader::Entry的条目指向.tar.gz文件内的文件或目录。
类似的代码可以使用(将Reader替换为Writer)来将文件写入.tar.gz文件中。
Gem::Package.new("").extract_tar_gz(io, destination)
将文件提取到磁盘上,其中io
是像File.open("file.tar.gz", "rb")
这样的对象。 - Andrew Kane最简单的方法可能是使用Zlib
Zlib是一个Ruby库。下面是一个简单的程序,用于从特定URL获取一个压缩文件,解压缩它,并将其内容粘贴到屏幕上。
require 'zlib'
require 'open-uri'
uri = "www.somedomain.com/filename.gz"
source = open(uri)
gz = Zlib::GzipReader.new(source)
result = gz.read
puts result
希望这能有所帮助。
尽管 Florian的回答 是正确的,但它没有考虑到tar长链接(尝试从oracle提取jdk-7u40-linux-i586.tar.gz :P )。以下代码应该能够解决这个问题:
require 'rubygems/package'
require 'zlib'
TAR_LONGLINK = '././@LongLink'
tar_gz_archive = '/path/to/archive.tar.gz'
destination = '/where/extract/to'
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?
File.delete dest if File.file? dest
FileUtils.mkdir_p dest, :mode => entry.header.mode, :verbose => false
elsif entry.file?
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
end
dest = nil
end
end
:verbose => false
是必要的吗? - Jeff Dickeyrequire '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
tar cz
(通常生成*.tgz
或.tar.gz
文件)使用 gzip 压缩。gzip
与 zip / unzip 不兼容(这个问题与之无关)。 - hagello