如何在 Ruby 中创建临时目录?

问题描述

如何以一种不错的方式在 Ruby 中创建临时目录?我还想在进程退出时自动删除它.谢谢！

How do I create a temporary directory in Ruby in a nice way? I would also like to delete it automatically on process exit. Thanks!

推荐答案

请参阅 tmpdir.如果 mktmpdir 方法被提供给一个块，当块返回时临时目录将被删除.在您的情况下，您将在没有块的情况下调用并稍后处理删除(=程序退出).

See documentation for tmpdir. If mktmpdir method is provided with a block, the temp dir will be removed when block returns. In your case, you would call without a block and handle removal later (=program exit).

关于退出时的自动删除，我认为 tmpdir 不会为您做到这一点.但是，at_exit 应该会有所帮助.

Regarding automatic removal on exit, I think tmpdir won't do that for you. However, at_exit should help.

例如，Homebrew 是这样的:

require 'tmpdir'

# rest omitted

TEST_TMPDIR = ENV.fetch("HOMEBREW_TEST_TMPDIR") do |k|
  dir = Dir.mktmpdir("homebrew-tests-", ENV["HOMEBREW_TEMP"] || "/tmp")
  at_exit { FileUtils.remove_entry(dir) }
  ENV[k] = dir
end

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