Class: SimpleFormat::AutoLink

Inherits:
Object
  • Object
show all
Defined in:
lib/simple_format/auto_link.rb

Instance Method Summary collapse

Constructor Details

#initialize ⇒ AutoLink

Returns a new instance of AutoLink.



6
7
8
9
10
11
12
13
14
 
# File 'lib/simple_format/auto_link.rb', line 6

def initialize()
  @regex = {
        protocol: %r{(?: ((?:ed2k|ftp|http|https|irc|mailto|news|gopher|nntp|telnet|webcal|xmpp|callto|feed|svn|urn|aim|rsync|tag|ssh|sftp|rtsp|afs|file):)// | www\. )[^\s<]+}x,
            href: [/<[^>]+$/, /^[^>]*>/, /<a\b.*?>/i, /<\/a>/i],
            mail: /[\w.!#\$%+-]+@[\w-]+(?:\.[\w-]+)+/,
        brackets: { ']' => '[', ')' => '(', '}' => '{' },
    word_pattern: RUBY_VERSION < '1.9' ? '\w' : '\p{Word}'
  }
end

Instance Method Details

#all(text) ⇒ Object 



16
17
18
19
 
# File 'lib/simple_format/auto_link.rb', line 16

def all(text)
  return text unless text
  email_addresses( urls(text) )
end

#email_addresses(text) ⇒ Object

Turns all email addresses into clickable links. If a block is given, each email is yielded and the result is used as the link text.



52
53
54
55
56
57
58
59
60
61
62
63
 
# File 'lib/simple_format/auto_link.rb', line 52

def email_addresses(text)
  text.gsub(@regex[:mail]) do
    text = $&
    if auto_linked?($`, $')
      text
    else
      display_text = (block_given?) ? yield(text) : text
      # mail_to text, display_text
      "<a href='mailto:#{text}'>#{display_text}</a>"
    end
  end
end

#urls(text) ⇒ Object

Turns all urls into clickable links. If a block is given, each url is yielded and the result is used as the link text.



23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
 
# File 'lib/simple_format/auto_link.rb', line 23

def urls(text)
  
  text.gsub(@regex[:protocol]) do
    scheme, href = $1, $&
    punctuation = []

    if auto_linked?($`, $')
      # do not change string; URL is already linked
      href
    else
      # don't include trailing punctuation character as part of the URL
      while href.sub!(/[^#{@regex[:word_pattern]}\/-]$/, '')
        punctuation.push $&
        if opening = @regex[:brackets][punctuation.last] and href.scan(opening).size > href.scan(punctuation.last).size
          href << punctuation.pop
          break
        end
      end

      link_text = block_given?? yield(href) : href
      href = '//' + href unless scheme

      "<a href='#{href}' target='_blank'>#{link_text}</a>" + punctuation.reverse.join('')
    end
  end
end