如何在Ruby中访问原始命令行参数字符串？ [英] How to access original command-line argument string in Ruby?

问题描述

我正在尝试访问Ruby中的原始命令行参数字符串（即-不使用预分割/分隔的ARGV数组）。有谁知道如何做到这一点？例如：

I'm trying to access the original command line argument string in Ruby (ie - not using the pre-split/separated ARGV array). Does anyone know how to do this? For example:

$> ruby test.rb command "line" arguments

我想知道'line'是否有

I want to be able to tell if 'line' had quotes around it:

"command \"line\" arguments"

有什么提示吗？预先感谢

Any tips? Thanks in advance

推荐答案

据我所知，ruby不会从命令行中删除这些双引号。外壳程序使用它们将内容作为字符串插入并传递给ruby。

As far as I can tell, ruby is not removing those double-quotes from your command line. The shell is using them to interpolate the contents as a string and pass them along to ruby.

您可以得到ruby收到的所有内容，如下所示：

You can get everything that ruby receives like this:

cmd_line = "#{$0} #{ARGV.join( ' ' )}"

为什么需要知道引号是什么？您可以使用其他定界符（例如'：'或'＃'）吗？

Why do you need to know what is in quotes? Can you use some other delimiter (like ':' or '#')?

如果需要，可以通过将转义符转义成红宝石来将它们传递给ruby：

If you need to, you can pass double-quotes to ruby by escaping them:

$> ruby test.rb command "\"line\"" arguments

上面的<$ c $在这种情况下，c> cmd_line 变量将收到以下字符串：

The above cmd_line variable would receive the following string in that case:

test.rb comand "line" arguments

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