From: Mark Hubbart <discord@...>
Date: 2004-02-15T19:59:22+09:00
Subject: Re: hyperlinking URLs (and emails?) in text

This is a little bit more readable, while still being somewhat compact.  
It also gets plain email addresses:

class String
	def hyperlink
		# define url parts:
		chars = Regexp.escape "/!#$\\%&'()*+,.:;=?@~-_"
		url   = "https?:\\/\\/[#{chars}[:alnum:]]+"
		email = "(?:mailto:)?[^\s@]+@[[:alnum:]._-]+\\.[[:alnum:]._-]+"
		# do the substitution:
		gsub(/#{url}|#{email}/) do |link|
			if  link =~ /^[a-zA-Z]+:/
				%Q(<a href="#{link}">#{link}</a>)
			else
				%Q(<a href="mailto:#{link}">#{link}</a>)
			end
		end
	end
end

Note that this will not get *all* email addresses, and it will let a  
some urls spill through. But it should get most stuff. Getting it exact  
would require more lines of code than I want to look at tonight :)



On Feb 15, 2004, at 1:27 AM, Ruby Baby wrote:

>
> Ugly:
>
> class String
> 	def hyperlink
> 		gsub(/(http:\/\/|https:\/\/|mailto:)([[:alnum:]\/!\#$\%&'()*+,.:;=? 
> @~-]+)([[:alnum:]\/!\#$\%&'()*+:;=?@~-])/, '<a  
> href="\\1\\2\\3">\\1\\2\\3</a>')
> 	end
> end
>
> ... but it generally works, from my few tests.
>
>
> Anyone got a better version, or care to improve on this one?
>
> Just trying to hyperlink URLs in text (and in future, email addresses,  
> without needing mailto:).
>