Ruby 是否有一个 Expect 等效 gem？

发布于 2024-11-30 20:34:40 字数 261 浏览 0 评论 0 原文

我尝试在 code.google 和 rubygems.org 上搜索，但遗憾的是它没有出现。

仅供参考：Expect 是一个 Unix 自动化和测试工具，由 Don Libes 编写，作为 Tcl 脚本语言的扩展，用于交互应用程序，例如 telnet、ftp、passwd、fsck、rlogin、tip、ssh 等。

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黑色毁心梦 2024-12-07 20:34:40

Ruby 附带了 PTY 模块，用于设置伪终端驱动交互式命令行应用程序。随之而来的是一个 expect 方法允许您与类似 Expect 的应用程序进行交互。为了学习如何使用expect，我找到了“Ruby Expect 库会带来什么？”有帮助。

就宝石而言，也许可以查看 greenletters ，它应该在 PTY + 的基础上进行改进 + 期望（尽管我还没有）我自己尝试过）。

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溺孤伤于心 2024-12-07 20:34:40

我最近花了相当多的时间来解决这个问题（我被 1.8.7 困住了）。我发现这个问题，这个博客文章和这个论坛帖子非常有用。

最后，如果有人对一个小例子感兴趣的话，这是我的应用程序代码（在签名包时将密码传递给 rpm）：

def run_interactive command, password, promt
  output   = ''
  begin
    r, w, pid = PTY.spawn(command)
    puts r.expect(promt)
    sleep(0.5)
    w.puts(password)
    begin
      r.each { |l| output += l } 
    rescue Errno::EIO
    end
    $?.exitstatus
    Process.wait(pid)
  rescue PTY::ChildExited => e
    $stderr.puts "The child process #{e} exited! #{$!.status.exitstatus}"
  end 
  output
end

password = "mypassword"
command  = "rpm --define '_signature gpg' --define '_gpg_name #{key_id}' --addsign #{package}"
promt    = %r{.*: }
expected = %r{good}
output = run_interactive(command, password, promt)
if output.match(expected)
  puts output
else
  abort "Error: expected: '#{expected}' got '#{output}'"
end

它几乎没有错误检查，但这就是我所需要的。

编辑：使用 Process.wait(pid) 更新代码，以确保它在继续之前完成，并添加有关 1.8.7 的注释。

I recently spent quite a bit of time struggling with this issue (I am stuck with 1.8.7). I found this question, this blog post and this forum thread really useful.

At the end this is my application code if anyone is interested in a little example (pass the password to rpm when signing packages):

def run_interactive command, password, promt
  output   = ''
  begin
    r, w, pid = PTY.spawn(command)
    puts r.expect(promt)
    sleep(0.5)
    w.puts(password)
    begin
      r.each { |l| output += l } 
    rescue Errno::EIO
    end
    $?.exitstatus
    Process.wait(pid)
  rescue PTY::ChildExited => e
    $stderr.puts "The child process #{e} exited! #{$!.status.exitstatus}"
  end 
  output
end

password = "mypassword"
command  = "rpm --define '_signature gpg' --define '_gpg_name #{key_id}' --addsign #{package}"
promt    = %r{.*: }
expected = %r{good}
output = run_interactive(command, password, promt)
if output.match(expected)
  puts output
else
  abort "Error: expected: '#{expected}' got '#{output}'"
end

It has little error checking but it was all I needed.

Edit: Update the code with Process.wait(pid) to make sure it finishes before continuing and add comment about this being for 1.8.7.

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煮酒 2024-12-07 20:34:40

查看这个 rubygem：https://github.com/abates/ruby_expect。它可以为你处理一些小任务。从其官方示例来看，“输入密码”并登录并与本地脚本交互就足够了。

这是一个更新 git 代码（使用密码进行身份验证）的示例：

require 'rubygems'
require 'ruby_expect'

def update_code
  password = 'your password here'
  exp = RubyExpect::Expect.spawn('git pull', :debug => true)
  exp.procedure do
    each do
        expect /password: / do
            send password
        end
    end
  end
end

update_code

只需运行上面的代码，您将看到如下内容：

$ ruby update_code.rb 

[email protected]??.net's password: 
remote: Counting objects: 133, done.
remote: Compressing objects: 100% (84/84), done.
remote: Total 85 (delta 62), reused 0 (delta 0)
Unpacking objects: 100% (85/85), done.

有关更多示例和详细信息，请深入研究其源代码。

checkout this rubygem: https://github.com/abates/ruby_expect. It could handle some small task for you. from its official example, it's enough to 'enter password' and login and interactive with local script.

here is an example that update the git code (which is authenticated with password):

require 'rubygems'
require 'ruby_expect'

def update_code
  password = 'your password here'
  exp = RubyExpect::Expect.spawn('git pull', :debug => true)
  exp.procedure do
    each do
        expect /password: / do
            send password
        end
    end
  end
end

update_code

just run the code above, and your will see like this:

$ ruby update_code.rb 

[email protected]??.net's password: 
remote: Counting objects: 133, done.
remote: Compressing objects: 100% (84/84), done.
remote: Total 85 (delta 62), reused 0 (delta 0)
Unpacking objects: 100% (85/85), done.

for more example and details, please dive into its source code.

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