Class: Lesstile

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

Constant Summary collapse

VERSION = 
'1.0'
CodeDetectionRegex = 
/---\s*?([\w\s\._+()-]*?)\s*?\n(.*?)---\n/m
CodeRayFormatter =

A formatter that syntax highlights code using CodeRay

lambda {|code, lang| 
  CodeRay.scan(CGI::unescapeHTML(code), lang).html(:line_numbers => :table).div 
}

Class Method Summary collapse

Class Method Details

.default_options ⇒ Object 



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# File 'lib/lesstile.rb', line 49

def default_options
  {
    :code_formatter => lambda {|code, lang| "<pre><code>#{code}</code></pre>" },
    :text_formatter => lambda {|text| 
      text = text.dup
      text.gsub!(/\n/, "<br />\n")
      text.gsub!('&quot;', '"')
      text.gsub!(Regexp.new('"([^"]+)":(' + URI.regexp.to_s + ')'), '<a href="\2">\1</a>')
      text
    }
  }
end

.format_as_html(text, options = {}) ⇒ Object

Returns lesstile formatted text as valid HTML5

options (all optional):

  • text_formatter: A callback function used to format text.

  • code_formatter: A callback function used to format code. Typically used for syntax highlighting.



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# File 'lib/lesstile.rb', line 45

def format_as_html(text, options = {})
  format_as_xhtml(text, options)
end

.format_as_xhtml(text, options = {}) ⇒ Object

Returns lesstile formatted text as valid XHTML

options (all optional):

  • text_formatter: A callback function used to format text.

  • code_formatter: A callback function used to format code. Typically used for syntax highlighting.



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# File 'lib/lesstile.rb', line 15

def format_as_xhtml(text, options = {})
  options = default_options.merge(options)

  text += "\n" unless ends_with?(text, "\n")
  text.gsub!(/\r\n/, "\n")
  text = CGI::escapeHTML(text)

  output = ""

  while match = text.match(CodeDetectionRegex)
    captures = match.captures
    code = captures[1]
    lang = blank?(captures[0]) ? nil : captures[0].downcase.strip.intern

    output += 
      options[:text_formatter][match.pre_match] +
      options[:code_formatter][code, lang]

    text = match.post_match
  end
  
  output += options[:text_formatter][text.chomp]
  output
end