Question

我想写一个ruby程序来解压缩tar.gz文件，我遇到了一些问题。阅读ruby-doc网站上的文档Zlib::GzipReader和Zlib::Inflate。然后我找到了这个Module someone wrote on GitHub，但这也没有用。因此，使用Zlib :: GzipReader的Ruby页面中的示例，我可以成功运行。

irb(main):027:0* File.open('zlib_inflate.tar.gz') do |f|
irb(main):028:1* gz = Zlib::GzipReader.new(f)
irb(main):029:1> print gz.read
irb(main):030:1> gz.close
irb(main):031:1> end
#
#
#
irb(main):023:0* Zlib::GzipReader.open('zlib_inflate.tar.gz') { |gz|
irb(main):024:1* print gz.read
irb(main):025:1> }

然后，当尝试使用Zlib :: Inflate选项时，我一直遇到incorrect header check错误。

irb(main):047:0* zstream = Zlib::Inflate.new
=> #<Zlib::Inflate:0x00000002b15790 @dictionaries={}>
irb(main):048:0> buf = zstream.inflate('zlib_inflate.tar.gz')
Zlib::DataError: incorrect header check
        from (irb):48:in `inflate'
        from (irb):48
        from C:/ruby/Ruby200p353/Ruby200-x64/bin/irb:12:in `<main>'
#
#
#
irb(main):049:0> cf = File.open("zlib_inflate.tar.gz")
=> #<File:zlib_inflate.tar.gz>
irb(main):050:0> ucf = File.open("ruby_inflate.rb", "w+")
=> #<File:ruby_inflate.rb>
irb(main):051:0> zi = Zlib::Inflate.new(Zlib::MAX_WBITS)
=> #<Zlib::Inflate:0x00000002c097f0 @dictionaries={}>
irb(main):052:0> ucf << zi.inflate(cf.read)
Zlib::DataError: incorrect header check
        from (irb):52:in `inflate'
        from (irb):52
        from C:/ruby/Ruby200p353/Ruby200-x64/bin/irb:12:in `<main>'
#
#
#
irb(main):057:0* File.open("zlib_inflate.tar.gz") {|cf|
irb(main):058:1* zi = Zlib::Inflate.new
irb(main):059:1> File.open("zlib_inflate.rb", "w+") {|ucf|
irb(main):060:2* ucf << zi.inflate(cf.read)
irb(main):061:2> }
irb(main):062:1> zi.close
irb(main):063:1> }
Zlib::DataError: incorrect header check
        from (irb):60:in `inflate'
        from (irb):60:in `block (2 levels) in irb_binding'
        from (irb):59:in `open'
        from (irb):59:in `block in irb_binding'
        from (irb):57:in `open'
        from (irb):57
        from C:/ruby/Ruby200p353/Ruby200-x64/bin/irb:12:in `<main>'

如何获取tar.gz文件，并提取内容以使文件不为空？我确实读过这个other post about Ruby Zlib from here，但这对我也没有用。我究竟做错了什么？

解压缩tar.gz时出现ruby-zlib头错误

0 个答案: