Class: Machinery::Tarball

Inherits:
Object show all
Defined in:
lib/tarball.rb

Overview

Represents a tarball, possibly gzipped.

Instance Method Summary collapse

Constructor Details

#initialize(file) ⇒ Tarball

Returns a new instance of Tarball.



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# File 'lib/tarball.rb', line 20

def initialize(file)
  @file = file
end

Instance Method Details

#list ⇒ Object 



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# File 'lib/tarball.rb', line 24

def list
  output = Machinery::LoggedCheetah.run(
    "tar",
    "tvf",
    @file,
    "--quoting-style=literal",
    stdout: :capture
  )

  output.lines.map do |line|
    mode, user_and_group, size, _date, _time, rest = line.split(" ", 6)

    case mode[0]
    when "l"
      type = :link
      # This may fail for files with "->" in their name, but there is no way
      # how to avoid this when using "tar".
      path = rest.split(" -> ").first
    when "h"
      type = :file
      # This may fail for files with "link to" in their name, but there is no way
      # how to avoid this when using "tar" unless we use the parameter
      # --hard-dereference with tar to get rid of hard links
      path = rest.split(" link to ").first
    when "d"
      type = :dir
      path = rest.chomp("/\n")
    else
      type = :file
      path = rest.chomp
    end

    user, group = user_and_group.split("/")

    {
      path:  path,
      type:  type,
      size:  size.to_i,
      mode:  mode_string_to_octal(mode),
      user:  user,
      group: group
    }
  end
end