基于正则表达式生成随机字符串? [英] Generate random string based on Regex?

问题描述

我想知道是否有一种方法可以从正则表达式生成随机字符串，例如:

I wonder if there is a way to generate random string from a regex like:

/[a-z0-9]{5}/.to_s
#=> "dsar3"

我找到了randexp( https://github.com/benburkert/randexp )，但似乎无法使用像上面这样的基本示例，反正我觉得它被遗弃了.

I found randexp (https://github.com/benburkert/randexp) but it seems to not work with a basic example like above and anyway I feel it's left abandoned.

有人吗?

推荐答案

Perl有一个可以执行此操作的CPAN模块.它通过将正则表达式转换为生成语法来工作.该概念可能可以适用于Ruby，但这会花费一点功夫.

Perl has a CPAN module that can do this. It works by converting the regex into a generative grammar. The concept can probably be adapted to Ruby, but would be a little work.

请参见 http://metacpan.org/pod/Parse::RandGen 和 http://metacpan.org/pod/Parse::RandGen::Regexp

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