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b57fe84f81
Also, use `--no-same-permissions` instead of `-o` (which does nothing without `-p` being passed and run as `root`) for the more explicit description of the behaviour we want.
59 lines
1.6 KiB
Ruby
59 lines
1.6 KiB
Ruby
# typed: true
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# frozen_string_literal: true
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require "system_command"
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module UnpackStrategy
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# Strategy for unpacking tar archives.
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class Tar
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extend T::Sig
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include UnpackStrategy
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extend SystemCommand::Mixin
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using Magic
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sig { returns(T::Array[String]) }
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def self.extensions
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[
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".tar",
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".tbz", ".tbz2", ".tar.bz2",
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".tgz", ".tar.gz",
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".tlzma", ".tar.lzma",
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".txz", ".tar.xz"
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]
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end
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def self.can_extract?(path)
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return true if path.magic_number.match?(/\A.{257}ustar/n)
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return false unless [Bzip2, Gzip, Lzip, Xz].any? { |s| s.can_extract?(path) }
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# Check if `tar` can list the contents, then it can also extract it.
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stdout, _, status = system_command("tar", args: ["--list", "--file", path], print_stderr: false)
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status.success? && !stdout.empty?
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end
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private
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sig { override.params(unpack_dir: Pathname, basename: Pathname, verbose: T::Boolean).returns(T.untyped) }
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def extract_to_dir(unpack_dir, basename:, verbose:)
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Dir.mktmpdir do |tmpdir|
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tar_path = path
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if DependencyCollector.tar_needs_xz_dependency? && Xz.can_extract?(path)
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tmpdir = Pathname(tmpdir)
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Xz.new(path).extract(to: tmpdir, verbose: verbose)
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tar_path = tmpdir.children.first
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end
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system_command! "tar",
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args: ["--extract", "--no-same-owner",
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"--file", tar_path,
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"--directory", unpack_dir],
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verbose: verbose
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end
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end
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end
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end
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