Question

我参与了一个需要删除网址的项目

是否有一个很好的正则表达式来匹配Ruby 1.8.7中的任何URL？

PS - 我有一个

/(?i)\b((?:[a-z][\w-]+:(?:\/{1,3}|[a-z0-9%])|www\d{0,3}[.]|[a-z0-9.\-]+[.][a-z]{2,4}\/)(?:[^\s()<>]+|\(([^\s()<>]+|(\([^\s()<>]+\)))*\))+(?:\(([^\s()<>]+|(\([^\s()<>]+\)))*\)|[^\s`!()\[\]{};:'\".,<>?«»“”‘’])\/* )/x

正则表达式位于http://www.rubular.com/r/UFDveGLNGt，带有一些示例字符串我如何匹配fb.me或goo.gl或google.com等网站？

Answer 1

怎么样：

require 'uri'
URI.regexp

评估结果为：

/
    ([a-zA-Z][\-+.a-zA-Z\d]*):                           (?# 1: scheme)
    (?:
       ((?:[\-_.!~*'()a-zA-Z\d;?:@&=+$,]|%[a-fA-F\d]{2})(?:[\-_.!~*'()a-zA-Z\d;\/?:@&=+$,\[\]]|%[a-fA-F\d]{2})*)                    (?# 2: opaque)
    |
       (?:(?:
         \/\/(?:
             (?:(?:((?:[\-_.!~*'()a-zA-Z\d;:&=+$,]|%[a-fA-F\d]{2})*)@)?        (?# 3: userinfo)
               (?:((?:(?:[a-zA-Z0-9\-.]|%\h\h)+|\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}|\[(?:(?:[a-fA-F\d]{1,4}:)*(?:[a-fA-F\d]{1,4}|\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3})|(?:(?:[a-fA-F\d]{1,4}:)*[a-fA-F\d]{1,4})?::(?:(?:[a-fA-F\d]{1,4}:)*(?:[a-fA-F\d]{1,4}|\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}))?)\]))(?::(\d*))?))? (?# 4: host, 5: port)
           |
             ((?:[\-_.!~*'()a-zA-Z\d$,;:@&=+]|%[a-fA-F\d]{2})+)                 (?# 6: registry)
           )
         |
         (?!\/\/))                           (?# XXX: '\/\/' is the mark for hostport)
         (\/(?:[\-_.!~*'()a-zA-Z\d:@&=+$,]|%[a-fA-F\d]{2})*(?:;(?:[\-_.!~*'()a-zA-Z\d:@&=+$,]|%[a-fA-F\d]{2})*)*(?:\/(?:[\-_.!~*'()a-zA-Z\d:@&=+$,]|%[a-fA-F\d]{2})*(?:;(?:[\-_.!~*'()a-zA-Z\d:@&=+$,]|%[a-fA-F\d]{2})*)*)*)?                    (?# 7: path)
       )(?:\?((?:[\-_.!~*'()a-zA-Z\d;\/?:@&=+$,\[\]]|%[a-fA-F\d]{2})*))?                 (?# 8: query)
    )
    (?:\#((?:[\-_.!~*'()a-zA-Z\d;\/?:@&=+$,\[\]]|%[a-fA-F\d]{2})*))?                  (?# 9: fragment)
  /x

这可能会比我们在这里提出的任何内容更好（否则请考虑将其提交到ruby）。

匹配在推文中找到的URL

1 个答案: