mirror of
https://github.com/Homebrew/brew.git
synced 2025-07-14 16:09:03 +08:00
35 lines
962 B
Ruby
35 lines
962 B
Ruby
|
module UnpackStrategy
|
||
|
|
class Xz
|
||
|
|
include UnpackStrategy
|
||
|
|
|
||
|
|
def self.can_extract?(path:, magic_number:)
|
||
|
|
magic_number.match?(/\A\xFD7zXZ\x00/n)
|
||
|
|
end
|
||
|
|
|
||
|
|
def dependencies
|
||
|
|
@dependencies ||= [Formula["xz"]]
|
||
|
|
end
|
||
|
|
|
||
|
|
private
|
||
|
|
|
||
|
|
def extract_to_dir(unpack_dir, basename:, verbose:)
|
||
|
|
FileUtils.cp path, unpack_dir/basename, preserve: true
|
||
|
|
quiet_flags = verbose ? [] : ["-q"]
|
||
|
|
safe_system Formula["xz"].opt_bin/"unxz", *quiet_flags, "-T0", unpack_dir/basename
|
||
|
|
extract_nested_tar(unpack_dir)
|
||
|
|
end
|
||
|
|
|
||
|
|
def extract_nested_tar(unpack_dir)
|
||
|
|
return unless DependencyCollector.tar_needs_xz_dependency?
|
||
|
|
return if (children = unpack_dir.children).count != 1
|
||
|
|
return if (tar = children.first).extname != ".tar"
|
||
|
|
|
||
|
|
Dir.mktmpdir do |tmpdir|
|
||
|
|
tmpdir = Pathname(tmpdir)
|
||
|
|
FileUtils.mv tar, tmpdir/tar.basename
|
||
|
|
Tar.new(tmpdir/tar.basename).extract(to: unpack_dir)
|
||
|
|
end
|
||
|
|
end
|
||
|
|
end
|
||
|
|
end
|