Class: Fira::Engine

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

Constant Summary collapse

ID_REGEX = 
/ #([^0-9][a-z_A-Z0-9_\-]+)/
CLASS_REGEX = 
/ \.([^0-9][a-z_A-Z0-9_\-]+)/
QUOTE_REGEX = 
/\S+=["']?(?:.(?!["']?\s+(?:\S+)=|[>"']))+.["']?/
TAG_OPEN_REGEX = 
/<[^\/%!]\w* /x
TAG_END_REGEX = 
/([\/]?>)/

Instance Method Summary collapse

Instance Method Details

#insert_quotes(_quotes, tag) ⇒ Object 



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# File 'lib/fira/engine.rb', line 70

def insert_quotes(_quotes, tag)
	space = ''
	space = ' ' if _quotes.length > 0
	quotes = _quotes.join(" ")
	tag.sub(TAG_END_REGEX, space + quotes + '\1')
end

#is_opening_tag?(text) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/fira/engine.rb', line 77

def is_opening_tag?(text)
	val = text =~ TAG_OPEN_REGEX
	val.nil? || val > 0 ? false : true
end

#parse_classes(text) ⇒ Object 



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# File 'lib/fira/engine.rb', line 46

def parse_classes(text)
	#find fira class attributes
	classes = text.scan(CLASS_REGEX)

	if classes.empty?
		return text
	end

	#build an HTML class attribute
	att = 'class="'

	classes.each do |cl|
		att += " #{cl[0]}"
		text = text.sub(" ." + cl[0], "")
	end

	att += '"'

	#remove the space before the first class
	att = att.sub(/class=" /, ' class="')

	text.sub(TAG_END_REGEX, att + '\1')
end

#parse_text(text) ⇒ Object 



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# File 'lib/fira/engine.rb', line 14

def parse_text(text)
	output = ""
	tokenizer = HTML::Tokenizer.new(text)
	while token = tokenizer.next

		#if it's an opening tag, analyze it
		if is_opening_tag?(token)

			#remove any quotes
			quotes = token.scan(QUOTE_REGEX)
			no_quotes = token.gsub(QUOTE_REGEX, '')

			#find and replace fira ID attributes
			result = no_quotes.sub(ID_REGEX, ' id="\1"')

			#find and replace fira class attributes
			result = parse_classes(result)

			#add back in the quotes
			output += insert_quotes(quotes, result)

			#find and replace fira data attributes
			output = output.gsub("\$", "data-")

		else
			output += token
		end
	end

	return output.gsub( /\s+/, " " )
end