Module: OsCtl::Lib::Utils::File

Defined in:
lib/libosctl/utils/file.rb

Instance Method Summary collapse

Instance Method Details

#regenerate_file(path, mode) ⇒ Object 



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# File 'lib/libosctl/utils/file.rb', line 5

def regenerate_file(path, mode)
  replacement = "#{path}.new-#{SecureRandom.hex(3)}"

  File.open(replacement, 'w', mode) do |new|
    if File.exist?(path)
      File.open(path, 'r') do |old|
        yield(new, old)
      end

    else
      yield(new, nil)
    end
  end

  File.rename(replacement, path)
end

#replace_symlink(path, dst) ⇒ Object

Atomically replace or create symlink

Parameters:

  • path (String) —

    symlink path

  • dst (String) —

    destination



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# File 'lib/libosctl/utils/file.rb', line 25

def replace_symlink(path, dst)
  replacement = "#{path}.new-#{SecureRandom.hex(3)}"
  File.symlink(dst, replacement)
  File.rename(replacement, path)
end

#rmdir_if_empty(path) ⇒ Object 



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# File 'lib/libosctl/utils/file.rb', line 38

def rmdir_if_empty(path)
  Dir.rmdir(path)
  true
rescue Errno::ENOTEMPTY
  false
end

#unlink_if_exists(path) ⇒ Object 



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# File 'lib/libosctl/utils/file.rb', line 31

def unlink_if_exists(path)
  File.unlink(path)
  true
rescue Errno::ENOENT
  false
end