hyperlinking URLs (and emails?) in text

[Ruby Baby]

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.

 

[Mark Hubbart]

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

 

[YANAGAWA Kazuhisa]

In Message-Id: <[email protected]>

Just trying to hyperlink URLs in text (and in future, email
addresses, without needing mailto.

Do you like the following? uri.rb is bundled with current stable releases.

require "uri"

URI.extract("foo bar http://foo.bar.com/foobar mailto:[email protected]")
#=> ["http://foo.bar.com/foobar", "mailto:[email protected]"]

 

[Minero Aoki]

Hi,

In mail "hyperlinking URLs (and emails?) in text"

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.

If you have ruby 1.8.1:

require 'uri'

text.gsub(URI.regexp(%w(http https ftp))) {|urlstr|
%Q[<a href="#{urlstr}">#{urlstr}</a>]
}

Also, you will want to escape '<' '>' '&' in text:

require 'uri'
require 'cgi'

text.gsub(/[<&>"']|#{URI.regexp(%w(http https ftp))}/) {|matched|
case matched
when /[<&>"']/
CGI.escapeHTML(matched)
else
url = CGI.escapeHTML(matched)
%Q[<a href="#{url}">#{url}</a>]
end
}


Regards,
Minero Aoki