Class: WeakXml::Fragment

Inherits:
Object
  • Object
show all
Defined in:
lib/weak_xml/fragment.rb

Constant Summary collapse

ATTRIBUTES_REGEXP =

Compiling regular expressions is expensive, specially if one uses variable parts. So, in order to achive the best performance, these should be compiled upfront without any “runtime dependencies”.

Regexp.compile(/\A<\w+\s+([^>]+)/m)
CONTENT_REGEXP = 
Regexp.compile(/.*?>(.*?)<[^>]+>\Z/m)

Instance Method Summary collapse

Constructor Details

#initialize(tag, xml) ⇒ Fragment

Returns a new instance of Fragment.



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# File 'lib/weak_xml/fragment.rb', line 10

def initialize(tag, xml)
  @tag = tag
  @xml = xml
end

Instance Method Details

#attr(key) ⇒ Object 



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# File 'lib/weak_xml/fragment.rb', line 15

def attr(key)
  if match_data = @xml.match(ATTRIBUTES_REGEXP)
    if value_match_data = match_data.captures.first.match(/#{key}="(.+?)"/)
      value_match_data.captures.first
    end
  end
end

#content ⇒ Object 



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# File 'lib/weak_xml/fragment.rb', line 23

def content
  if match_data = @xml.match(CONTENT_REGEXP)
    match_data.captures.first.tap(&:strip!)
  end
end